Relevant bibliographies by topics / Hormonas

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  2. Dissertations / Theses
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  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Hormonas'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 March 2023

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Journal articles on the topic "Hormonas"

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Abreu Lomba, Alin, Karen Dayana González, Maria Antonia Escobar, Antonio Jose Paredes, and Andres Emilson Delgado Truque. "Hipofunción hipofisaria y trastornos relacionados." Revista Colombiana Salud Libre 15, no. 1 (July 7, 2021): e407279. http://dx.doi.org/10.18041/1900-7841/rcslibre.2020v15n1.7279.

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La hipofunción hipofisiaria o también conocida como hipopituitarismo se refiere a la disminución en la secreción de una o mas hormonas hipofisiarias, esto dependerá de la porción glandular comprometida. La glándula se divide en la hipófisis anterior o adenohipófisis en donde se producen 6 hormonas bien conocidas como Hormona de Crecimiento (GH), la Corticotropina (ACTH), la Tirotropina (TSH), la Hormona Folículo Estimulante (FSH), la Hormona Luteinizante (LH) y la Prolactina (PRL). En la hipófisis posterior o neurohipofisis se almacena continuamente y después se secretan la Hormona Antidiurética (ADH) y la oxitocina. Por lo tanto, el grado de compromiso glandular determina si el déficit de estas hormonas es parcial o total con consecuencias clínicas leves o severas. El diagnóstico en muchas oportunidades se realiza con pruebas de estimulación o evaluaciones periódicas múltiples de función hipofisiaria con medición de niveles hormonales. Las terapias de reemplazo hormonal varían dependiendo del déficit encontrado, así como la etapa de vida del paciente.
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Rueda-Galvis, Myriam Vanessa, and Carlos Alfonso Builes-Barrera. "Fisiología de la tiroides e hipotiroidismo en el embarazo. Revisión de tema." Medicina y Laboratorio 26, no. 1 (January 11, 2022): 15–33. http://dx.doi.org/10.36384/01232576.557.

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Durante el embarazo se generan múltiples cambios fisiológicos a nivel hormonal para llevar a cabo de manera satisfactoria la gestación. Uno de los ejes hormonales con cambios más importantes que repercuten de manera directa en el desarrollo fetal y bienestar materno es el tiroideo, el cual presenta modificaciones para lograr suplir las necesidades de hormona tiroidea tanto materna como fetal, principalmente en las primeras etapas del embarazo. Entre estas, se describen cambios en la cantidad de proteínas transportadoras de hormonas, aumento en el estímulo y producción de hormonas tiroideas, incremento del aclaramiento renal de yodo y alteración en la actividad de las desyodinasas. Estos mecanismos ofrecen suficiente hormona tiroidea al feto, el cual es dependiente del aporte materno. Un desajuste en cualquiera de estos mecanismos, puede conducir al desarrollo de hipotiroidismo con múltiples complicaciones, como la pérdida del embarazo e hipertensión gestacional, entre otras. Una tamización oportuna y un tratamiento temprano pueden evitar estos desenlaces adversos. De ahí la necesidad fundamental de conocer y comprender el comportamiento del eje tiroideo en la gestación.
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Becerra Urrego, Rodrigo, and Juan Carlos Galvis Rincón. "Perfil hormonal del envejecimiento muscular." Revista Repertorio de Medicina y Cirugía 20, no. 4 (December 1, 2011): 217–24. http://dx.doi.org/10.31260/repertmedcir.v20.n4.2011.772.

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El concepto de sarcopenia implica la pérdida de la masa y la fuerza musculares asociadas con el envejecimiento. Se produce por múltiples factores, como el daño oxidativo, pérdida de unidades motoras alfa de la médula espinal, disminución de la calidad y masa musculares, descenso de hormonas anabólicas como dehidroepiandrosterona, testosterona, estrógenos, hormona del crecimiento, factor de crecimiento ligado a la insulina tipo IGF-1, hormona paratiroidea e insulina, así como aumento de diferentes interleuquinas y del cortisol, inactividad física voluntaria y dieta hipocalórica. En esta revisión analizamos el papel de algunas hormonas que afectan el balance dinámico entre estímulos anabólicos y catabólicos en el músculo y la relación entre estos cambios hormonales y el desarrollo de sarcopenia.
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Lam de Calvo, Oris, and Lilibeth Castillero de Santos. "EXPERTOS EN FISIOLOGÍA: RESUMEN DE LO QUE DEBES SABER DE LAS HORMONAS TIROIDEAS." Revista Médico Científica 33, no. 2 (March 16, 2021): 31–45. http://dx.doi.org/10.37416/rmc.v33i2.604.

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La glándula tiroides secreta dos hormonas importantes, la tiroxina y triyodotironina. Se conoce ahora, una regulación más selectiva de la síntesis de triyodotironina a partir de la desyodación de tiroxina en los tejidos blanco; esto permite una mayor disponibilidad de hormona en un determinado tejido, de acuerdo con sus necesidades fisiológicas, o lo protege de los niveles exageradamente altos. La glándula tiroides tiene la capacidad de almacenar y autorregular el ingreso de yodo a la misma y de desviar la síntesis hormonal hacia la triyodotironina ante escasa ingesta de yodo. Además de los receptores nucleares, se conocen otros receptores para las hormonas tiroideas, localizados en las mitocondrias y en la superficie de la membrana plasmática, y sus efectos son esenciales en el desarrollo, crecimiento y metabolismo.
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Paris, Claudia, Ana Zepeda, Mónica Muñoz, Adela Camus, Paula Catalán, Cristian Sotomayor, Rosario Luengo, Carolina Schulin-Zeuthem, Mariela Brieba, and Patricia Romero Fuentes. "Reserva ovárica y falla ovárica prematura en niñas y adolescentes postrasplante de progenitores hematopoyéticos." Andes Pediatrica 93, no. 1 (February 14, 2022): 19. http://dx.doi.org/10.32641/andespediatr.v93i1.3693.

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El aumento de la sobrevida de niñas y adolescentes después de un trasplante de progenitores hemato- poyéticos (TPH) ha permitido conocer los efectos tardíos de esta terapia. Objetivo: medir la reserva y la falla ováricas prematura después de un TPH.Pacientes y Método: estudio descriptivo, transversal de niñas y adolescentes trasplantadas entre 1999-2011. Se realizó examen ginecológico, exámenes hormonales y ecotomografía ginecológica transabdominal, y se consignó desarrollo puberal pre TPH. Se registraron los siguientes datos de la ficha clínica: patología de base, tipo de acondicionamiento, uso de radioterapia en el acondicionamiento, edad al momento del TPH y haber tenido o tener enfermedad del injerto contra el huésped (EICH) aguda o crónica. Los exámenes hormonales incluyeron hormona folículo estimulante (FSH), hormona luteinizante (LH), estradiol, prolactina (PRL), hormona tiroestimulante (TSH), tiroxina libre, testosterona total, proteína transportadora de hormonas sexuales (SHBG) y hormona antimulleriana (AMH). Análisis estadístico: chi cuadrado y exacto de Fisher con P < 0,05. Resultados fueron expresados como mediana (rango). Resultados: Se evaluaron 41 pacientes, edad al momento del TPH de 6,8 años (1,5-14,1) y 14,8 años (rango: 4-25,4) al momen- to de la evaluación. El 93% de las pacientes trasplantadas tenían patologías oncológicas y recibieron regímenes de acondicionamiento mieloablativos. Todas mostraron una reserva ovárica disminuida. El 72% de las pacientes presentaron una falla ovárica prematura (FOP). Conclusiones: Todas las pacientes estudiadas tenían una reserva ovárica disminuida y la mayoría de ellas una alta prevalencia de FOP. Es indispensable una evaluación ginecológica antes del TPH y un seguimiento posterior para monitorización hormonal e inicio del reemplazo hormonal.
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Gutiérrez-Sigueros, Irma, Carlos A. Cuenca-Soria, Leonardo I. Navarro-Angulo, Emilio J. Maldonado-Enríquez, Carolina E. Melgar-Valdes, and Alfonso Castillo-Domínguez. "Tiempo y dosis óptimas de fluoximesterona, para masculinización de crías del pez maya Cichlasoma urophthalmus (Percidae: Cichlidae)." UNED Research Journal 10, no. 2 (September 21, 2018): 416–21. http://dx.doi.org/10.22458/urj.v10i2.2170.

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La masculinización en peces cíclidos, es de importancia capital para fines de mejora en la producción piscícola. El objeto de la presente investigación fue obtener la dosis y tiempo óptimos de exposición a la hormona fluoximesterona (FM), durante la masculinización del cíclido Maya Cichlasoma urophthalmus. Así, se probaron, dos tiempos de exposición (45 y 60 días) y cuatro dosis de andrógeno (0, 15, 30 y 60mg/kg de alimento), de manera que se tuvieron cinco tratamientos (15mg 60d, 30mg 45d, 30mg 60d, 60mg 45d y 60mg 60d) y un grupo testigo sin hormona (0mg 60d, CTL), por triplicado. Un kilogramo de alimento iniciador para tilapia Purina (45% de proteína), fue rociado con solución hormonada previamente disuelta en alcohol etílico, a razón de las dosis de prueba antes mencionadas por separado. Se administró alimento hormonado a saciedad, a crías de C. urophthalmus (siete días después de la eclosión) según el tratamiento. Los resultados revelaron que la proporción promedio de machos (69,1±2,7%), obtenida con la dosis 60mg/kg de FM, suministrada vía alimento por 45 días (60mg 45d), fue significativamente mayor, al resto de los tratamientos probados (Tukey, p<0,05, k = 6, N-k = 12). Tales resultados obligan a revisar nuevas técnicas para la administración de hormonas esteroides (bioencapsulación), que por un lado, disminuyan los problemas de reproducción precoz en el cultivo de esta especie nativa, y por otro, constituyan técnicas más amigables con el entorno ambiental, lo cual podría minimizar la carga residual de hormonas esteroides en los cuerpos acuáticos.
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Gonzáles Campos, Oscar, Rosario Gutiérrez, Juan Matzumura, and Alfredo Larrañaga. "Terapia Hormonal de Reemplazo." Revista Peruana de Ginecología y Obstetricia 42, no. 4 (August 2, 2015): 184–94. http://dx.doi.org/10.31403/rpgo.v42i1743.

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Vázquez Olmedo, David, Rocío Rodriguez Cabrera, Pablo Elorza Martínez, Teresita Ramírez Hernández, and María del Rosario Dávila Lezama. "Evaluación de la efectividad biológica de hormonales para incrementar el amarre de frutos en mandarina Fremont (Citrus reticulata Blanco)." Revista Biológico Agropecuaria Tuxpan 5, no. 1 (June 30, 2017): 61–64. http://dx.doi.org/10.47808/revistabioagro.v5i1.94.

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El uso de reguladores de crecimiento es una alternativa para incrementar el porcentaje de amarre de frutos, lo cual se traduce en incrementos de la producción. Se evaluaron los efectos de la aplicación de 5 tratamientos entre ellos, 3 diferentes hormonas, un complejo hormonal y un testigo, las hormonas aplicadas correspondieron principalmente a hormonas promotoras del crecimiento. Las variables de respuesta evaluadas fueron: Porcentaje de frutos amarrados por brote, diámetro polar y ecuatorial de los frutos, calidad externa de los frutos color y textura, evaluación de la fitotoxicidad en los árboles y estimación de la producción de fruta. Los resultados de los tratamientos a base de giberelinas y de auxinas, registran mayor promedio y rendimiento de frutos en relación al testigo. La mejor producción de fruta se obtuvo en los tratamientos de auxinas y giberelinas, los cuales superaron al testigo en un 24.33% y 22.89%, respectivamente. La aplicación de las hormonas evaluadas no afectó, ni modificó la calidad de los frutos: la textura, y el color. No se presentó efecto de fitotoxicidad en ninguno de los tratamientos evaluados.
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Suárez-Esquivel, Marcela, and Laura Castro-Ramírez. "Medición de hormonas tiroideas y cortisol en caballos mediante un analizador de inmunoensayo automatizado." Revista Ciencias Veterinarias 34, no. 1 (July 11, 2016): 39. http://dx.doi.org/10.15359/rcv.34-1.3.

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A pesar de que las enfermedades tiroideas son poco comunes en equinos, es importante contar con un intervalo de referencia para hormonas tiroideas en cualquier laboratorio de endocrinología veterinaria. Asimismo, la medición de cortisol y hormonas tiroideas es útil en caballos, no solamente en el diagnóstico de enfermedades, sino que, ambos tipos de hormonas, son utilizadas como herramientas para monitorización e investigación del desempeño físico y la tasa metabólica.Los objetivos de este estudio son: (i) probar la capacidad del analizador automatizado AIA 360® (TOSOH Bioscience) para la medición de hormonas tiroideas y cortisol en suero equino de forma confiable y; (ii) establecer un intervalo de referencia para hormonas tiroideas en caballos costarricenses utilizando el AIA -360®.Se muestreó 68 caballos saludables, libres de medicación (31 machos y 37 hembras) y se agruparon en tres categorías, con base en la edad. Las concentraciones séricas de tiroxina total (TT4), tiroxina libre (FT4) y cortisol fueron cuantificadas en el AIA-360®. La relación estadística, entre sexo, edad y valores hormonales, se determinó con las pruebas de Kruskal-Wallis, Dunn y Wilcoxon (U Man-Whitney). Se consideró significativo un valor de p <0.05.Los intervalos de referencia fueron los siguientes: TT4 14.16 – 46.33 nmol/L, FT4 3.60 – 16.09 pmol/L y cortisol 23.45 – 166.64 nmol/L. Estadísticamente, no se encontró relación significativa entre el sexo, la edad y los valores hormonales. Se observó relaciones significativas (p<0.05) entre los niveles hormonales y algunos de los parámetros medio ambientales en los cuales se encontraban los animales. A mayor altitud, los niveles de cortisol fueron más elevados; mientras que, conforme aumentaba la temperatura ambiental, los valores de cortisol fueron más bajos. Los niveles de FT4 incrementaron a mayor precipitación. La concentración de TT4 tiende a disminuir conforme aumentan las horas-luz diarias. Sin embargo, no se encontró una relación estadística para ello (p<0.30). Los resultados muestran que el AIA-360® es útil para la medición de hormonas tiroideas y cortisol; además, que los valores encontrados son comparables con otros estudios y técnicas de análisis.
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Cervantes Begazo, René. "Riesgo oncogénico de la hormonoterapia de reemplazo en el climaterio." Revista Peruana de Ginecología y Obstetricia 40, no. 2 (July 18, 2015): 69–73. http://dx.doi.org/10.31403/rpgo.v40i1436.

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En 1947 Bittner propuso por primera vez el concepto de que las hormonas pueden aumentar la incidencia de neoplasia, basado en sus estudios de estrógenos y cáncer mamario en ratones. Luego de múltiples estudios se plantea la hipótesis de la asociación entre cáncer de mama y de endometrio y la administración de estrógeno, y la de cáncer de mama y la administración de progestágenos. Las hipótesis planteadas se basan en la "asociación entre neoplasia y estimulación hormonal excesiva de los órganos blanco específicos, cuyo crecimiento y función normales son controladas por uno o más esteroides u hormonas polipéptidas”.
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Dissertations / Theses on the topic "Hormonas"

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Patriarca, Filipa Marina Pinheiro. "Plexo coroideu: local de síntese de hormonas esteróides?" Master's thesis, Universidade da Beira Interior, 2012. http://hdl.handle.net/10400.6/1084.

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O plexo coroideu (CP), uma estrutura altamente vascularizada, encontra-se dentro dos ventrículos do cérebro e é composto por vilosidades enroladas aos capilares, tecido conjuntivo e uma monocamada de células epiteliais ciliadas. O CP produz o líquido cefalorraquidiano (LCR) que mantém o meio extracelular do cérebro e forma uma interface única entre o sangue e o LCR. A biossíntese de esteroides ocorre na glândula adrenal, nas gónadas e no cérebro – neuroesteroides. Um trabalho desenvolvido anteriormente permitiu identificar várias enzimas da via esteroidogénica, pertencentes à família do citocromo P450 (CYP), hidroxiesteroide desidrogenase (HSD) e redutase, no CP de rato, através da análise de microarrays de cDNA. Portanto, o objetivo deste estudo foi confirmar e analisar a expressão do citocromo P450, família 11, subfamília a, polipéptido 1 (CYP11A1), citocromo P450, família 11, subfamília b, polipéptido 3 (CYP11B3), citocromo P450, família 17, subfamília a, polipéptido 1 (CYP17A1), 17β-hidroxiesteroide desidrogenase (17β-HSD), 5α-redutase (ST5ared) e citocromo P450, família 19, subfamília a, polipéptido 1 (CYP19A1) no CP de Rattus norvegicus e Sus domesticus. Assim, os níveis de expressão de mRNA destas enzimas foram analisados por RT-PCR e PCR em tempo real, enquanto os níveis proteicos foram analisados por imunocitoquímica e imunohistoquímica. Por fim, foi testada a funcionalidade destas enzimas em culturas ex vivo usando percursores tritiados da via esteroidogénica. Este trabalho permitiu-nos confirmar a expressão destas enzimas e determinar a sua localização nas células epiteliais do CP de rato e no CP de porco. Para além disso, os ensaios ex vivo mostraram que há síntese de hormonas esteroides a partir de percursores tritiados nos explantes de CP.
The choroid plexus (CP), a highly vascularized structure, lies within the ventricles of the brain and is composed by convoluted villi with capillaries, connective tissue and a monolayer of ciliated epithelial cells. CP produces the cerebrospinal fluid (CSF) that maintains the extracellular milieu of the brain and form a unique interface between the peripheral blood and the CSF. Steroid biosynthesis occurs in the adrenal gland, in the gonads and, in the brainneurosteroids. In previous work found that several enzymes of the steroidogenic pathway, which belong to the family of cytochrome P450 (CYP), hydroxysteroid dehydrogenase (HSD) and reductase are expressed in CP by cDNA microarray analysis. So, the aim of this study was to confirm and analyse the expression of cytochrome P450, family 11, subfamily a, polypeptide 1 (CYP11A1), cytochrome P450, family 11, subfamily b, polypeptide 3 (CYP11B3), cytochrome P450, family 17, subfamily a, polypeptide 1 (CYP17A1), hydroxysteroid (17-β) dehydrogenase 8 (17β-HSD8), steroid-5-α-reductase (ST5ared) and cytochrome P450, family 19, subfamily a, polypeptide a (CYP19A1) in CP of Rattus norvegicus and Sus domesticus. mRNA expression levels of these enzymes were evaluated by RT-PCR and Real-time PCR, while protein levels were evaluated by immunocytochemistry and immunohistochemistry. Finally, we tested the functionality of these enzymes ex-vivo using tritiated percursors of the steroidogenic pathway. We were able to confirm the expression of these enzymes and determine their location in CP epithelial cells of rat and pig CP. Moreover, ex-vivo assays showed that steroid hormones synthesis from tritiated precursors occurs in CP explants.
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Cajal, Visa Yolanda. "Interacción de hormonas peptídicas e inmunopéptidos del virus de la hepatitis B con modelos de membrana." Doctoral thesis, Universitat de Barcelona, 1993. http://hdl.handle.net/10803/672860.

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En esta tesis doctoral se ha pretendido profundizar en los mecanismos de interacción péptido-lípido, puesto que los mismos determinan gran parte de las propiedades estructurales y funcionales de las membranas biológicas. Los péptidos estudiados son: hormonas peptídicas (LHRH, SRIF, GHRH(1-29)) e inmunopéptidos del virus de la hepatitis B (PRES(120-145), Estearoil-PRES(120-145), Colanoil-PRES(120-145), PAM3(SS-PRES(120-145)). Como modelos de membrana se han empleado liposomas y monocapas lipídicas. Se han tenido en cuenta varios criterios de afinidad complementarios para el estudio de la interacción: (1) Cambios en la fluorescencia intrínseca del péptido; (2) Cambios en la fluidez de los liposomas diferenciando entre zona apolar y polar, por polarización de fluorescencia; (3) Alteraciones en la permeabilidad de las vesículas; (4) Cambios en la estructura secundaria de los péptidos por CD; (5) Interacción con monocapas: cinéticas de penetración e isotermas de compresión. Los resultados obtenidos permiten afirmar que la interacción es de naturaleza predominantemente hidrófoba en los casos estudiados. Sin embargo, otra propiedad que ejerce gran influencia es la anfipaticidad, ya que los péptidos con marcado carácter anfipático en su estructura secundaria, como GHRH(1-29)(hélice alfa anfipática), y PRES(120-145)(hélice alfa y hoja beta), interaccionan de forma más acusada. Otro factor a tener en cuenta es el tamaño del péptido o proteína, ya que en el caso de proteína globular de elevado peso molecular, la estructura terciaria dificulta estéricamente la interacción. Por último, en algunos casos, la interacción péptido-péptido predomina sobre la péptido-lípido, formándose agregados, como ocurre con LHRH y con PAM3CSS-PRES(120-145).
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Costa, Ana Raquel Ferreira da. "Regulação da apoptose por hormonas sexuais no plexo coroide." Master's thesis, Universidade da Beira Interior, 2013. http://hdl.handle.net/10400.6/1339.

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A morte celular mediada pela disfunção mitocondrial pode estar associada com a acumulação de péptido β-amiloide (a-beta), que é um dos principais fatores causadores da doença de Alzheimer. O plexo coroide (CP) tem um papel fundamental na remoção do a-beta do líquido cefalorraquidiano (CSF), evitando a sua acumulação e consequente morte neuronal. No entanto, o a-beta pode também induzir a apoptose nas células epiteliais do plexo coroide, com a consequente redução da eficiência da barreira deste tecido. As hormonas sexuais regulam a acumulação de a-beta, reduzindo os seus níveis e, consequentemente, a apoptose. O CP é um alvo reconhecido das hormonas sexuais, e estas hormonas afetam a expressão de vários genes da via apoptótica e, portanto, podem afetar a apoptose induzida por a-beta nestas células. O objetivo deste trabalho foi analisar a expressão de genes apoptóticos no CP de rato e estudar o efeito das alterações nos níveis de hormonas esteroides na expressão destes genes, o que pode ter um papel importante na neuroproteção relativa ao péptido β-amiloide e, portanto, na doença de Alzheimer. Começámos por analisar a expressão de vários genes da cascata apoptótica (Casp2, Casp3, Cflar, Casp9, BCl2l1, Mdm4p53, GzmC e Cox4i1), por PCR, na linha celular de CP, Z310, e no plexo coroide de rato, confirmando-se a sua expressão neste epitélio. Além disso, as proteínas de apoptose caspase-3 e Cox4 também foram localizadas por imunohistoquímica e whole-mount (IHC de fluorescência) no citoplasma das células do CP de rato. A expressão de BCl2l1, Mdm4p53, Casp2, Cflar e Casp9 foi comparada por real-time PCR por meio do qual foi possível confirmar que estes genes são diferencialmente expressos entre animais machos e fêmeas Sham e OOX e OVX, respetivamente. A partir desta análise, podemos concluir que a apoptose no CP está sujeita a regulação pelas hormonas sexuais em ratos machos e fêmeas. Estão a decorrer estudos, em células de CP, para analisar o impacto dos níveis hormonais na apoptose induzida pelo a-beta.
Cell death mediated by mitochondrial dysfunction may be associated with the accumulation of β-amyloid peptide (a-beta), which is one of the major causative factors of Alzheimer's disease. The choroid plexus (CP) has a key role on the clearance of a-beta from the cerebrospinal fluid (CSF), thereby preventing its accumulation and consequent neuronal death. However, a-beta may also induce apoptosis in the choroid plexus epithelial cells, thereby reducing the efficiency of this tissue barrier. Sex hormones regulate the accumulation of a-beta, reducing its levels and consequently apoptosis. CP is a recognized target for sex hormones, and these sex hormones affect the expression of several genes of the apoptotic pathway and thus may affect a-beta induced apoptosis in these cells. The aim of this work was to analyze the expression of apoptotic genes in rat CP and study the effect of changes in steroid hormones levels in the expression of these genes, which may have an important role in neuroprotection against β-amyloid peptide and hence Alzheimer's disease. We began by analyzing the expression of several genes of the apoptotic cascade (Casp2, Casp3, Cflar, Casp9, Bcl2l1, Mdm4p53, GzmC and Cox4i1), by PCR, in the CP cell line Z310 and in rat CP, confirming their expression in this epithelia. In addition, the apoptotic proteins Casp3 and Cox4 were also located by immunohistochemistry and whole-mount (Fluorescence IHC) in the cytoplasm of rat CP cells. The expression of Bcl2l1, Mdm4p53, Casp2, Cflar and Casp9 was compared by Real time PCR through which it was possible to confirm that these genes are differentially expressed between male and female sham and OOX or OVX rats. From this analysis we conclude that apoptosis in CP is subject to regulation by sex hormones in male and female rats. Studies are underway in CP cells, to analyze the impact of hormone levels in a-beta induced apoptosis.
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Varnauskaitė, Birutė. "Kiaulių augimo hormono geno polimorfizmas ir jo ryšys su mėsos kokybiniais bei kiekybiniais rodikliais." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080319_131314-76347.

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Darbo tikslas - ištirti augimo hormono geno įvairovę kiaulių tarpe ir nustatyti polimorfizmo įtaką kiaulių produktyvumo savybėms. Darbo uždaviniai: 1. Surinkti ir išanalizuoti mokslinę literatūrą apie kiaulių augimo hormoną bei jo genetinį pagrindimą. 2. Įdiegti kiaulių augimo hormono geno tyrimo metodiką LVA K.Janušausko Gyvūnų genetikos laboratorijoje. 3. Ištirti augimo hormono geno (GH) įvairovę kiaulių tarpe, naudojant sumodeliuotus pradmenis pagal geno seką. 4. Suformuoti fenotipinių požymių duomenų bazę. 5. Ištirti augimo hormono geno įvairovės įtaką kiaulių produktyvumo savybėms LVA Gyvūnų genetikos laboratorijoje įdiegta kiaulių augimo hormono geno, ištyrimo metodika. Pirmą kartą ištirtas augimo hormono geno polimorfizmas bei jo variantų įtaka kiaulių produktyvumo savybėms. Įdiegta metodika leidžia ištirti kiaulių genome augimo hormono geną, nustatyti alelių polimorfizmą ir įvertinti jo poveikį kiaulių fenotipinėms savybėms. Siūloma atsižvelgti į kiaulių genome esančio augimo hormono geno polimorfizmą, atrenkant ir parenkant gyvulius, turinčius ekonomiškai naudingus alelius, kad būtų galima pagerinti produktyviąsias savybes.
Object and tasks of work. 1. Analyse and summarize literature about growth hormone and it genetic background. 2. Introduce pig GH and GHR genes research methodology at K. Janušauskas Laboratory of Animal Genetics, LVA. 3. Investigate GH and GHR genes polymorphism and distribution of different alleles at Lithuanian pig population by PCR-RFLP method. 4. Create datebase of pig phenothypical traits 5. Determine correlation between restriction fragment length polymorphism (RFLP) in GH and GHR genes and pig phenothypical traits. Research methodology. 1. DNA extraction from hair roots. 2. PCR to amplify GH and GHR genes. 3. RFLP method. 3. Electrophoresis in agarose gel. 4. Staining with Etidium bromide. 5. Genotyping. 6. Stasitical analysis of data. Results and conclutions. Growth hormone and growth hormone receptor genes have been found to be polymorphic in tested pig population what gives possibility to use them as genetic markers. According to agregated GHRH/GHR1/GHR2 genotype the largest carcass and bacon half length had pigs with genotype ABG1G1G3G3, the lowest fat thickness with genotype BBG1G1G4G4, the largest muscularity with genotype BBG1G1G4G4, the largest makeweight had pigs with genotype ABG1G1G3G3, the smallest feed intake for 1 kg makeweigth had pigs with AAG2G2G3G4 genotype. Unifactorial analysis showed that the largest percent of meat traits variation explains agregated genotype GHRH/GHR1/GHR2 – from 10,8 percent to warm carcass weight to 29,2 percent to fat... [to full text]
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Chire, E. Teófilo, and Richard Korswagen. "Feromonas sexuales : una alternativa en el control de plagas." Revista de Química, 2013. http://repositorio.pucp.edu.pe/index/handle/123456789/100141.

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Barbeira, Marisa Regina Reduto. "Variações inter individuais genéticas da citotoxidade associada aos estrogénios." Master's thesis, Universidade de Aveiro, 2007. http://hdl.handle.net/10773/733.

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Mestrado em Toxicologia
Nos últimos anos, tem aumentado o interesse em relação aos estrogénios e às suas acções no organismo, principalmente devido ao uso da terapia hormonal de substituição. Os flavonóides, como o resveratrol, têm uma estrutura idêntica aos estrogénios e alguns são descritos como antioxidantes e outros como prooxidantes, existindo alguma controvérsia relativamente a este assunto. O objectivo deste trabalho foi investigar a resposta dos fibroblastos de gengiva humana aos efeitos do estradiol e do resveratrol. Este estudo foi realizado em culturas celulares de fibroblastos de gengiva humana de diferentes indivíduos. A proliferação e a citotoxicidade foram avaliadas através do método colorimétrico MTT e a expressão da proteína Bclxl pelo método Western Blot. Os resultados do nosso estudo demonstraram a existência de variabilidade inter individual da citotoxicidade ao estradiol. Os fibroblastos de gengiva humana, parecem constituir um modelo para o estudo da resposta aos estrogénios, com possível aplicação no estudo inter individual de risco e ajuste terapêutico em candidatas à terapia hormonal de substituição. Também verificámos que, a presença de resveratrol potencia o efeito tóxico do estradiol, parecendo não apresentar um efeito celular protector. ABSTRACT: In the last years has increased the interest, in relation to oestrogens and to its actions in the organism, mainly due to the use of hormone replacement therapy. Flavonoids like resveratrol have similar structure to estrogens and were described as anti-oxidants in some systems, but as pro-oxidants in others, and controversy exists regarding this subject. The aim of this work was, to investigate the response of the human gingival fibroblasts to the effects of estradiol and resveratrol. The study is being performed in cultured gingival fibroblasts from different individuals. Proliferation and cytotoxicity were evaluated by MTT colorimetric assay and Bcl-xl protein expression by Western Blot. The results of our study demonstrate the existence of interindividual variability in estradiol cytotoxicity. The human gingival fibroblasts seem to constitute a model for the study of the response to estrogens, with possible applications in interindividual risk study and therapeutic adjust to female applicants, for the hormone replacement therapy. We also verified that resveratrol enhances the toxic effect of estradiol, seeming not to exert a protector effect in the cells.
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Pestana, José Antonio Melo. "Relação entre rede social, Inteligência geral, inteligência social e hormonas em humanos." Master's thesis, ISPA -Instituto Universitário, 2013. http://hdl.handle.net/10400.12/2796.

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Dissertação de Mestrado em Psicobiologia, apresentada ao ISPA - Instituto Universitário
Segundo a Hipótese da Inteligência Maquiaveliana, o principal motor evolutivo responsável pelo desenvolvimento das capacidades cognitivas que muitas espécies exibem terá sido a exigência que o processamento de uma rede social numerosa e complexa pede. Um factor importante para o estabelecimento de relações sociais humanas é a Teoria da Mente, que é definida como a capacidade de inferir sobre os estados mentais dos outros. Existem também numerosas evidências relativas à influência de várias hormonas no comportamento social. De forma a investigar quais as variáveis cognitivas e fisiológicas relacionadas com o tamanho e complexidade da rede social em humanos, foram recolhidos dados sobre Inteligência Geral (medida através de “Matrizes Progressivas Avançadas de Raven”), Teoria da Mente (através de” Reading the Eyes in the Mind Test”, cuja versão portuguesa foi também aqui validada, num N = 130), rede social (através de “Social Network Index”), testosterona e cortisol. Não foram encontradas relações da rede social e hormonas com nenhuma das restantes variáveis em estudo. Foi, contudo, observada uma associação entre Inteligência Geral e Teoria da Mente, em mulheres (N = 70), confirmada através de comparação entre os grupos com melhores e piores prestações no Reading the Mind in the Eyes Test, e modelos lineares de regressões múltiplas. Este resultado sugere que alguns dos recursos cognitivos subjacentes ao processamento de estímulos sociais e não-sociais possam ser partilhados, mostrando assim novas evidências que suportam a Hipótese da Inteligência Maquiaveliana.
ABSTRACT: According to the Machiavellian Intelligence Hypothesis, the main evolutionary drive responsible for the development of numerous species’ cognitive abilities was the demanding processing power required for maintaining a complex and large social network. A key factor in the establishment of human social relationships is the Theory of Mind, defined as the process by which we attribute mental states to others, different from our own. Besides this, a substantial amount of evidence exists on the influence hormones play on social behavior. In order to further investigate the cognitive and physiological variables related to the size and complexity of human social networks, data was gathered regarding General Intelligence (by means of Raven’s Advanced Progressive Matrices), Theory of Mind (using a Portuguese version of the “Reading the Mind in the Eyes Test”, validated here as well, in 130 participants), social network (via the “Social Network Index”), testosterone and cortisol. Social network and hormones were not found to be related with any of the remaining variables. We did, however, find an association between General Intelligence and Theory of Mind, in women (N = 70), either by comparing the groups with the best and worst Eyes Test scores, or by multiple linear regression analysis. This result suggests that some of the cognitive resources underlying social and non-social stimuli processing may be the same, thus supporting the Machiavellian Intelligence Hypothesis.
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Gonçalves, Maria Amália Lopes. "Cães de protecção e cães de condução de gado: Aspectos de comportamento e de endocrinologia." Master's thesis, Instituto Superior de Psicologia Aplicada, 2002. http://hdl.handle.net/10400.12/562.

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Dissertação de Mestrado em Psicologia Legal
Os cães de protecção e os cães de condução de gado expressam em contexto de trabalho padrões de comportamento muito diferentes. Os cães de protecção de gado, para os animais do rebanho, exibem sequências de comportamento social e raramente expressam em algum momento da sua ontogenia comportamento predatório definido. Os cães de condução de gado, exibem um comportamento homólogo ao padrão motor predatório do ancestral lobo mas truncado numa fase precoce. Este trabalho teve como objectivos: a análise qualitativa e quantitativa dos padrões elementares de comportamento exibidos pelo cão Serra da Estrela, em contexto de trabalho; a análise de níveis plásmicos de testosterona em cães de protecção e em cães de condução de gado. Os padrões elementares de comportamento do cão Serra da Estrela, observados em contexto de trabalho, são os característicos de um cão de protecção de gado; sequências de comportamento social que têm como receptor o gado, marcação odorífera, vocalização em resposta a estímulos novos e significantes, errar em patrulha. Não expressa comportamento predatório. Também a análise quantitativa está de acordo com os dados da literatura; o cão surge adormecido a maior parte do tempo mas a frequência do padrão de comportamento vigilância é alta. Os dados indicam que há diferenças estatisticamente significativas entre cães de protecção e cães de condução de gado (machos) nos níveis plásmicos de testosterona. Mais, os níveis plásmicos de testosterona encontrados em cães de protecção de gado (raça Serra da Estrela) são muito inferiores aos que surgem como referência para a espécie na literatura.
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Espinosa, Pedro C. "Calidad de la respuesta estrogénica por influencia de las hormonas tiroideas." Doctoral thesis, Espinosa PC. Calidad de la respuesta estrogénica por influencia de las hormonas tiroideas [Internet]. [Córdoba]: Universidad Nacional de Córdoba, 2019 [citado el 13 de febrero de 2020]. Disponible en: https://rdu.unc.edu.ar/handle/11086/14001, 2019. http://hdl.handle.net/11086/14001.

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Tesis- Doctor en Medicina y Cirugía- Universidad Nacional de Córdoba. Facultad de Ciencias Médicas, 2019
Introduction: The normal plasma estrogen values associated with the upper limit of TSH and normal or low T4L, act on the estrogen’s effectors while female reproductive age. This situation causes metabolic alterations that compromise ovarian function, decrease ovulatory capacity, previously adjusted to the subclinical hypothyroidism. Material and Method: 813 women were evaluated (between 21 and 41 years old), discriminated according to the values of TSH and FT4, in 3 groups: "without pathology, G-1"; "with pathology, G-2" and "undefined, G3". Appointments for menstrual disorders and reproductive desire, were relevant in “G-2” and “G-3”. The variables evaluated were: BMI and nutritional status; glucidic and lipid profile. The thyroid evaluation included: functional, immunological and morphological study. Finally, ovarian function: FSH - LH - Estradiol and Prolactin, hormonal colpocytology and gynecological ultrasound. Results: age, origin, age of menarche and initiation of sexual relations, shows parity between the groups. The metabolic results showed that in the "G-3", the percentage of overweight patients was intermediate between “G1” and “G-2”; the level of triglycerides was higher in “G-1” but lower than “G2”, and the insulin was slightly increased, but within normal values. The thyroid evaluation revealed significant differences of the "G-3" in relation to “G-1” and “G-2”. The ovarian profile revealed statistically significant differences for LH between “G-3” vs. “G-1” and “G-2”. The finding of ovarian alterations at ultrasounds showed the presence of micro polycystic ovaries with also significant differences. Conclusion: this work shows that the normalization of TSH and FT4 values restore normal ovarian function, jointly with the remission of gynecological alterations that constituted the initial reason for complain. The number of pregnancies achieved in the "indefinite group, G-3" (54 pregnancies, 79.4%) confirms the proposed hypothesis.
Introducción: valores de estrógenos plasmáticos normales asociados a TSH en el límite superior y Tac normal o baja, afectan los electores estrogénicos durante la edad reproductiva femenina. Esta situación, ocasiona alteraciones metabólicas que comprometen la función ovárica, disminuyendo la capacidad ovulatoria, previa a configurar el cuadro de hipotiroidismo subclínico. Material y Método: fueron evaluadas 813 mujeres, entre 21 y 41 años discriminadas según los valores de TSH y T4L, en 3 grupos: "sin patología. G-1"; "con patología, G-2" e "indefinidas, G-3". Las consultas, por trastornos menstruales y deseo reproductivo, resultaron relevantes en G-2 y G-3. Las variables evaluadas fueron: IMC y estado nutricional; perfil glucidico y lipídico. La evaluación tiroidea incluyó: estudio funcional. inmunológico y morfológico. Por último, función ovárica: FSH — LH — Estradiol y Prolactina, colpocitología hormonal y ecografía ginecológica. Resultados: la edad, procedencia, edad de menarca e inicio de relaciones sexuales, muestra paridad entre los grupos. Los resultados metabólicos, mostraron que en el "grupo G-3", el porcentaje de pacientes con sobrepeso se encontraba en cifras intermedias entre G-1 y G-2; el nivel de triglicéridos era más elevado en G-1 pero inferior a G-2, y la insulina estaba levemente aumentada, pero dentro de valores normales. La valoración tiroidea, reveló diferencias significativas del "grupo G-3" con relación a G-1 y G-2. El perfil ovárico, reveló diferencias estadísticamente significativas para LH entre G-3 vs G-1 y G-2. El hallazgo de alteraciones ováricas ecografías mostró la presencia de ovarios micropoliquísticos con diferencias también significativas. Conclusión: el motivo de la presente investigación, demuestra que la normalización de los valores TSH y T4L restablecen el normal funcionamiento ovárico, y con él la remisión de las diversas alteraciones ginecológicas que constituyeron el motivo inicial de consulta. Entre los cuales el número de embarazos logrados en el "grupo indefinidas, G-3" (54 embarazos, 79,4%) fue una variable representativa que permitió objetivar la confirmación de la hipótesis planteada.
2021-10-22
Fil: Espinosa, Pedro Conrado. Universidad Nacional de Córdoba. Facultad de Ciencias Médicas; Argentina.
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Klebanovas, Jurijus. "Žmogaus rekombinantinio augimo hormono įtaka žiurkių odos žaizdų gijimui." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2007~D_20080129_142948-67883.

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Šio darbo tikslas – įvertinti žmogaus rekombinantinio augimo hormono Biosoma (UAB „Biotechna“, Vilnius, Lietuva) įtaką eksperimentinių gyvūnų (žiurkių) odos paviršinės mechaninės, visos odos mechaninės ir visos odos nudegimo žaizdos gijimui. Tyrimo uždaviniai: mechaniškai sukėlus eksperimentiniams gyvūnams odos paviršiaus iki tinklinio sluoksnio defektą, įvertinti Biosoma poveikį žaizdos gijimui, atliekant žaizdos dugno kolageno tinklo histomorfometrinius matavimus; eksperimento su gyvūnais metu mechaniškai sukėlus visos odos storio defektą, nustatyti Biosoma poveikį žaizdos gijimo greičiui, pagal jos kontūro kitimą; nustatyti temperatūros ir ekspozicijos parametrus siekiant sukelti standartizuotą visos odos nudegimo žaizdos sąlyčio modelį; įvertinti Biosoma įtaką eksperimentinių gyvūnų visos odos nudegimo žaizdos gijimui bei palyginti jį su visos odos mechanines žaizdos gijimu; įvertinti Biosoma įtaką gyvūnų visos odos nudegimo gijimui atliekant žaizdos dugno kolageno tinklo histomorfometrinius matavimus. Mūsų tyrimo duomenimis, eksperimentinių gyvūn���� (žiurkių), gavusių sisteminį anabolinį preparatą – žmogaus rekombinantinį augimo hormoną Biosoma 5,6 TV (2,0 mg/kg per parą injekcijas) visų tipų žaizdos – odos paviršinė mechaninė, visos odos mechaninė ir visos odos nudegimo – gijo greičiau, jos dugno vienas pagrindinių struktūrinių komponentų – fibrilinio kolageno tinklas buvo sintetinamas ir „brendo“ greičiau.
The aim of this study is to estimate the influence of recombinant human growth hormone Biosoma (UAB „Biotechna“, Vilnius, Lietuva) on different types of rats skin wound healing. We examined part and full thickness skin mechanical lesions and full thickness skin burns. The objectives: to estimate recombinant human growth hormone Biosoma impact on mechanically inflicted animal part thickness cutaneous wound healing according to histomorphometrical evaluation of the wound bed collagen; to evaluate recombinant human growth hormone Biosoma influence on full thickness skin mechanical wound healing in accordance with the wound contour changing; to choose the thermal exposition parameters for inflicting standard full thickness contact skin burn in animal; to evaluate the influence of recombinant human growth hormone Biosoma on animal full thickness skin burn healing and to compare it with the full thickness skin mechanical wound healing; to estimate the influence of recombinant human growth hormone Biosoma on animal full thickness burn ECM synthesis according to histomorphometrical wound bed collagen measurements. According to the research data, all types skin wounds (part and full thickness skin mechanical and full thickness burn) healed faster, their wound bed collagen fibers synthesis and maturation were faster in the experimental animals (rats) treated with rhGH Biosoma 5.6 IU (2.0 mg/kg a day) injections.
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Books on the topic "Hormonas"

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Morgan, Brian L. G. Hormonas. México, D.F: Editorial Diana, 1996.

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Mendez, Sergio Amaro. Hormonas y Actividad Fisica. La Habana: Ed. Ciencias Medicas, 1991.

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Guevara, Nicolás Mendoza Ladrón de. Lola y otras canciones de amor: Hormonas, contracultura y rock. Granada: Editorial Atrio, 2008.

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Lola y otras canciones de amor: Hormonas, contracultura y rock. Granada: Editorial Atrio, 2008.

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Colgan, Michael. Hormonal health: Nutritional and hormonal strategies for emotional well-being & intellectual longevity. Vancouver, B.C., Can: Apple Pub., 1996.

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La salud hormonal. 3rd ed. Málaga: Editorial Sirio, 2009.

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Kleinman, R. L. Directory of hormonal contraceptives =: Répertoire des contraceptifs hormonaux = Guía de anticonceptivos hormonales. London: IPPF International Office, 1988.

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Crenshaw, Theresa Larsen. La alquimia del amor y del deseo: Las hormonas : cuáles son y cómo influyen en su vida sexual. Barcelona: Grijalbo, 1997.

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Sexual chemistry: Understanding our hormones, the Pill and HRT. London: Cedar, 1994.

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1953-, Morgan Roberta, ed. Hormones: How they affect behavior, metabolism, growth, development and relationships. Los Angeles: Body Press, 1989.

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Book chapters on the topic "Hormonas"

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Seifert, Roland. "Sex Hormones: Hormonal Contraception and Hormone Replacement Therapy." In Basic Knowledge of Pharmacology, 287–301. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18899-3_24.

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Kleine, Bernhard, and Winfried G. Rossmanith. "Hormones from Mevalonate: Juvenile Hormone and Steroid Hormones." In Hormones and the Endocrine System, 191–236. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-15060-4_6.

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Hopp, Vollrath. "Hormone – Endokrinologie [E. hormones – endocrinology]." In Chemische Kreisläufe in der Natur, 567–603. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-55860-7_19.

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Rijnberk, A. "Tissue hormones and hormonal manifestations of cancer." In Clinical Endocrinology of Dogs and Cats, 197–202. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0105-6_11.

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Floch, Martin H. "Hormonas gastrointestinales." In Netter. Gastroenterología, 345–47. Elsevier, 2006. http://dx.doi.org/10.1016/b978-84-458-1567-0.50106-5.

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"Front Matter." In Tacones, siliconas, hormonas, 1–6. Siglo del Hombre Editores, 2019. http://dx.doi.org/10.2307/j.ctvfrxqmb.1.

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"Epílogo." In Tacones, siliconas, hormonas, 185–98. Siglo del Hombre Editores, 2019. http://dx.doi.org/10.2307/j.ctvfrxqmb.10.

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"Referencias." In Tacones, siliconas, hormonas, 199–211. Siglo del Hombre Editores, 2019. http://dx.doi.org/10.2307/j.ctvfrxqmb.11.

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"Back Matter." In Tacones, siliconas, hormonas, 212. Siglo del Hombre Editores, 2019. http://dx.doi.org/10.2307/j.ctvfrxqmb.12.

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"Table of Contents." In Tacones, siliconas, hormonas, 7–12. Siglo del Hombre Editores, 2019. http://dx.doi.org/10.2307/j.ctvfrxqmb.2.

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Conference papers on the topic "Hormonas"

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Bunting, Haley A., Ryan T. Cassilly, Brian Jin, Christopher S. Ahmad, Louis U. Bigliani, William N. Levine, and Thomas R. Gardner. "Effect of Hormone Therapy on Tensile Strain of the Macaque Inferior Glenohumeral Ligament." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53531.

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The effect of hormone treatment on the material properties of ligaments has been extensively studied for the anterior cruciate ligament (ACL). However, there have been few studies on the effects of hormones on the material properties of the shoulder. Shoulder ligaments contribute to overall shoulder stability, and a change in ligament properties could contribute to a change in overall shoulder laxity. Cynomolgus monkeys have served as nonhuman primate models in studies examining the effects of hormone replacement therapy on the cardiovascular system, as well as serving as a model for menopause, reproductive support structures, the knee joint and shoulder joint. The cynomolgus macaques are commonly used for studies involving hormone replacement therapy because they have 28-day menstrual cycles with very similar hormonal patterns to that of women. This study uses female cynomologus macaque (Macaca fascicularis) monkeys as an animal model of the human shoulder to determine if estrogen has an effect on the strain distribution of the inferior glenohumeral ligament (IGHL).
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Gardner, Thomas R., Ryan T. Cassilly, Brian Jin, Anuli N. Mkparu, Christoper S. Ahmad, Louis U. Bigliani, and William N. Levine. "Effect of Estrogen on Viscoelastic Properties of the Anterior Pouch of the Macaque Animal Model of the Inferior Glenohumeral Ligament." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206835.

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The effect of hormone treatment on the material properties of ligaments has been extensively studied for the anterior cruciate ligament (ACL). However, there have been very few studies on the effects of hormones on the material properties of the shoulder. These shoulder ligaments contribute to overall shoulder stability, and a change in ligament properties could contribute to a change in overall shoulder laxity. This study uses female cynomologus macaque (Macaca fascicularis) monkeys as an animal model of the human shoulder to determine if estrogen has an effect on the viscoelastic properties of the anterior pouch of the inferior glenohumeral ligament (IGHL). Cynomolgus monkeys have served as nonhuman primate models in several studies, including monkey models of menopause, the effects of hormone replacement therapy on the cardiovascular system, reproductive support organs, and the knee joint. The cynomolgus macaques are commonly used for studies involving hormone replacement therapy because they have 28-day menstrual cycles with very similar hormonal patterns to that of women.
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Caldwell, Jon-Michael E., Ryan T. Cassilly, Haley A. Bunting, Christopher S. Ahmad, Louis U. Bigliani, William N. Levine, and Thomas R. Gardner. "Effects of Hormone Therapy on Regional Surface Strain as a Function of Applied Strain in the Macaque Inferior Glenohumeral Ligament." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80840.

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Hormones such as estrogen are known to have an effect on the biomechanical properties of certain ligaments such as the anterior cruciate ligament in the knee; however, relatively little is known about its effect on the ligaments of the shoulder. The inferior glenohumeral ligament (IGHL) is a static stabilizer of the shoulder that prevents anterior translation of the humeral head. Alterations to the properties of this ligament can result in capsular stretching, increased laxity, and ultimately instability. The cynomolgus macaque (Macaca fascicularis) shares many hormonal similarities with humans including a 28-day menstrual cycle and is a commonly used model for hormone replacement therapy studies. This study uses the female cynomolgus monkey as a model of the human shoulder to determine if estrogen has an effect on the regional surface strain behavior of the inferior glenohumeral ligament.
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Prokić, Danijela, Marija Vukčević, Marina Maletić, Ana Kalijadis, Biljana Babić, Ivona Janković-Častvan, and Tatjana Đurkić. "Extraction of Estrogen Hormones from Water Using Carbon Cryogel as Sorbent." In 34th International Congress on Process Industry. SMEITS, 2021. http://dx.doi.org/10.24094/ptk.021.34.1.123.

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In this study, carbon cryogel was used as solid-phase extraction sorbent for the extraction of estrogenic hormones (estrone, 17β-estradiol, and 17α-ethinylestradiol) from water solution. The solid-phase extraction (SPE) method was optimized by choosing an appropriate mass of the sorbent, volume, and initial pH of estrogenic hormone water solution, as well as by choosing an appropriate organic solvent. The concentration of tested hormones after extraction was measured by liquid chromatography coupled with tandem mass spectrometry. Based on the obtained hormone recoveries, the following optimal conditions of the SPE procedure were chosen: 100 cm3 of hormone water solution at initial pH adjusted to 7, 20 mg of the sorbent, the methanol-dichloromethane mixture was used for hormone elution. Recoveries obtained under the optimal conditions ranged from 77 % for estrone, to 86 % for 17β-estradiol, with relative standard deviation from 7,4 to 18 %.
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Kusumawati, Widya, and Lely Khulafa’ur Rosidah. "The Effect of Hormonal Contraception on Body Mass Index among Women in Reproductive Age." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.03.20.

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ABSTRACT Background: Hormonal contraception is still a popular contraceptive method for most women. More than six million women worldwide use the injectable hormonal contraceptive method. The hormones estrogen and progesterone contained in hormonal birth control can affect the increase of sodium and fluids. This will affect the fat layer and appetite which will cause weight gain, thus impacting body mass index (BMI). This study aimed to determine the effect of hormonal contraception on BMI. Subjects and Method: This was a cross-sectional study conducted in Ngampel village, Mojoroto District, Kediri, East Java, in June – July 2019. The total of 30 women in reproductive age were selected using purposive sampling technique. The independent variable was the use of hormonal contraception. the dependent variable was BMI. The data were collected by questionnaire then analyzed using Chi Square test. Results: The use of hormonal contraception was increased the BMI among women in reproductive age. Conclusion: The use of hormonal contraception can give an effect on BMI. Sometimes, woman body should be given the opportunity to rest using non-hormonal birth control. Keywords: family planning, hormonal contraception, body mass index Correspondence: Widya Kusumawati. Dharma Husada Kediri Academy of Midwifery. Jl. Coverage No 41 A Kediri City. Email: widya.koesoemawati@gmail.com. Mobile: 085722223910. DOI: https://doi.org/10.26911/the7thicph.03.20
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Jain, Vikas. "Massive peripheral giant cell granuloma associated with pregnancy." In 16th Annual International Conference RGCON. Thieme Medical and Scientific Publishers Private Ltd., 2016. http://dx.doi.org/10.1055/s-0039-1685368.

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Peripheral giant cell granuloma (PGCG) is a relatively Common reactive exophytic lesion of the oral cavity. The influence of hormones has been suggested as contributory factor in PGCG development and predominance of these lesions in young females as well as some previously reported pregnancy related cases support this belief. It has been observed that majority of lesions present in the 4th decade of life, when hormonal changes are more pronounced. Cailluette and Mattar in their study found that peripheral giant cell granuloma are under the influence of the ovarian hormones. However Chambers and Spector suggested peripheral giant cell granuloma to be enhanced by pregnancy rather than being pregnancy dependent. The responsiveness of gingiva to these hormones along with the immunosuppressive actions of the hormones contributes to the growth of the lesion. Clinically, PGCGs may present as polypoid or nodular lesions, predominantly bluish red with a smooth shiny or mamillated surface.This poster will review the literature available on the association of Massive Peripheral Giant Cell Granuloma With Pregnancy with focus on possible causes of PGCG during pregnancy.
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Đokovic, Radojica, Marko Cincovic, Vladimir Kurćubic, Milun D. Petrovic, Miloš Ži Petrovic, Ljiljana Anđušic, and Biljana Anđelic. "HOMEORETSKA REGULACUJA METABOLIČKIH FUNKCIJA KOD KRAVA U PERIPARTALNOM PERIODU." In SAVETOVANJE o biotehnologiji sa međunarodnim učešćem. University of Kragujevac, Faculty of Agronomy, 2021. http://dx.doi.org/10.46793/sbt26.235dj.

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The aim of this paper is to describe complex homeoretic and homeostatic mechanisms in dairy cows during the peripartum period. The endocrine system has a key function in regulating the adaptation of metabolism during the peripartum period. Homeoresis represents the functioning of the endocrine system and metabolism in conditions when the organism must primarily provide certain physiological processes, such as fetal growth or lactation. Then the function of all tissues is adjusted to the new situation. Homeoretic hormones (growth hormone, prolactin, glucocorticosteroids, thyroid hormones, insulin, glucagon and leptin) in dairy cows in the peripartum period play a key role in maintaining high lactation and maintaining cow health.
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García Marín, Ivonne Lissette. "La Neurociencia desde una Acción Pedaandragógica del Docente Universitario." In VI CONGRESO INVESTIGACIÓN, DESARROLLO E INNOVACIÓN DE LA UNIVERSIDAD INTERNACIONAL DE CIENCIA Y TECNOLOGÍA. Universidad Internacional de Ciencia y Tecnología, 2022. http://dx.doi.org/10.47300/978-9962-738-04-6-14.

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El horizonte generador de deliberación en neurociencia comprende las relaciones humanas, originadas por comportamientos del funcionamiento cerebral, con pensamientos verbales, visuales, expresados separadamente por hemisferios cerebrales izquierdo y derecho, interviniendo la inteligencia emocional sobre el sistema inmunológico vinculando las hormonas que se liberan con el estrés, entre ellas: adrenalina y noradrenalina, el cortisol, beta endorfinas y encefalina evitando una función inmunológica en célula humana. Por ello, en lo cognitivo, la neurociencia inmersa al campo educativo-formativo responde a investigaciones orientadas hacia un proceso de enseñanza-aprendizaje, que involucra el desarrollo y funcionamiento del cerebro guiado a construir conocimiento, mediación pedagógica y andragógica del docente en educación universitaria. El objetivo investigativo consiste en analizar la neurociencia desde una acción pedaandragógica del docente universitario. Ontoepistemológicamente sigue ideas de Adam (1980), Martínez (1987), Campos (2010), Balza (2011), Bernal (2012), García (2017), Rubio (2018), Morillo (2018), y Hernández (2021), con estudios e investigaciones sobre neurociencia, su conectividad neural y construir conocimiento-aprendizajes científicos por el hemisferio derecho, genéticamente a partir del nacimiento y complementado con ambos hemisferios capacitando al hombre socialmente. La Metódica aplicada es una investigación teórica, método hermenéutico, analítico-reflexivo, técnica arqueo de fuentes bibliográficas, documentales, electrónicas, el instrumento fichas de contenidos. Sus Reflexiones analíticas, destacan a la neurociencia importante como medio de interacción proveniente del sistema nervioso, estimulando las estructuras cerebrales para generar una acción pedaandragógica del docente universitario en forma perceptiva, consciente, creativa y social, aplicada e integrada a disciplinas científica-humanistas, buscando el crecimiento y desarrollo personal como condición esencial de todo ser humano.
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Magalhães, Paolla Giovanna Rossito de, Marina Buldrini Filogonio Seraidarian, Bernardo Tardin Caetano, Barbara Oliveira Paixão, Tassila Oliveira Nery de Freitas, Daniel Vasconcelos de Pinho Tavares, Gabriella Braga da Cunha Silva, et al. "Case Report: Reversible Cerebral Vasoconstriction Syndrome in a cancer patient using ZoladexTM." In XIII Congresso Paulista de Neurologia. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/1516-3180.142.

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Context: The Reversible Cerebral Vasoconstriction Syndrome (SVCR) is characterized by rapid and reversible vasoconstriction and segmental dilation of cerebral arteries, usually preceded by thunderclap headache. The involvement of second and third-order branches of the cerebral arteries is the most commom finding in a cerebral angiography. This report is about a SVCR case with atypical involvement, significantly compromising extracranial vessels and raising the hypothesis of association between the use of hormonal blocker gosserelin acetate (ZoladexTM) with SVCR. Case report: Female, 39 years old, with breast cancer and bone metastasis using ZoladexTM that presented with a sudden headache and vomiting, progressing to global afasia and paresis in the right upper limb. Magnetic resonance identified hyperacute intraparenchymal hematoma in left frontoparietal convexity and subarachnoid haemorrhage. Cerebral angiography showed irregularities in the distal branches (M3 and M4) of the middle cerebral arteries, as well as in the superficial temporal artery, characterized by focal strictures. Conclusion: Studies show that hormonal fluctuations in the postpartum period can trigger SVCR due to the drop in estrogen and progesterone (gonadotropins). During postpartum, the stimulus of breastfeeding increases prolactin levels leading to GnRH suppression, which decreases the level of gonadotropins. ZoladexTM is a GnRH analogue and its chronic administration results in suppression of these hormones - similar to the postpartum period. Therefore, there may be an association of hormonal blockers with SVCR.
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Dascaliuc, Alexandru. "Hormesis, screening and practical use of biostimulators in agriculture." In International Scientific Symposium "Plant Protection – Achievements and Prospects". Institute of Genetics, Physiology and Plant Protection, Republic of Moldova, 2020. http://dx.doi.org/10.53040/9789975347204.44.

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The term hormesis describes the biphasic response of any biological system to increasing the dose of the stress factor of a different nature, characterized in that low doses have stimulating, beneficial effects. In contrast, high doses cause harmful, inhibitory effects. The hormonal response is practically universal, being stimulated by the action of toxic substances, heavy metal ions, hormones, including physical factors. The standard type of response to different factors suggests installing these evolving mechanisms, so they are of particular interest in elucidating plant adaptation mechanisms to various stressors, including developing screening methods and practical use of biostimulators. The practical use of hormesis principles was the theoretical basis for elaboration and rational use of the biostimulator Reglalg in agriculture.
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Reports on the topic "Hormonas"

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Bernal, Juan. Metabolismo y acción de las hormonas tiroideas en el cerebro. Sociedad Española de Bioquímica y Biología Molecular, December 2018. http://dx.doi.org/10.18567/sebbmdiv_anc.2019.01.1.

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Adamczewska, Daria, Jolanta Słowikowska-Hilczer, and Renata Walczak-Jędrzejowska. The Association Between Vitamin D and the Components of Male Fertility: a Systematic Review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, November 2022. http://dx.doi.org/10.37766/inplasy2022.11.0151.

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Review question / Objective: The purpose of this systematic review is to provide an up-to-date, comprehensive review of the existing literature on the experimental and clinical evidence for the effects of VD on the components of male fertility, sperm parameters and sex hormone production. Condition being studied: Vitamin D serum level in relation to men semen quality and sex hormones serum concentration. Eligibility criteria: Exclusion criteria: not in English; review, meta analysis; animal studies; in vitro studies; study group < 30 subject; insufficient data; wrong or missing outcome.
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Reding, Kerryn W. An Epidemiologic Study of Genetic Variation in Hormonal Pathways in Relation to the Effect of Hormone Replacement Therapy on Breast Cancer Risk. Fort Belvoir, VA: Defense Technical Information Center, April 2008. http://dx.doi.org/10.21236/ada486465.

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Reding, Kerryn W. An Epidemiologic Study of Genetic Variation in Hormonal Pathways in Relation to the Effect of Hormone Replacement Therapy on Breast Cancer Risk. Fort Belvoir, VA: Defense Technical Information Center, October 2008. http://dx.doi.org/10.21236/ada501717.

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Wallace, Margaret R. Steroid Hormones in NF1 Tumorigenesis. Fort Belvoir, VA: Defense Technical Information Center, August 2005. http://dx.doi.org/10.21236/ada443895.

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Wallace, Margaret R., David Muir, and Martha Campbell-Thompson. Steroid Hormones in NF1 Tumorigenesis. Fort Belvoir, VA: Defense Technical Information Center, August 2004. http://dx.doi.org/10.21236/ada428454.

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Simpson, Jennifer K., Francesmary Modugno, Joel L. Weissfeld, Lewis Kuller, Victor Vogel, and Joseph P. Costantino. Hormonal Determinants of Mammographic Density. Fort Belvoir, VA: Defense Technical Information Center, August 2004. http://dx.doi.org/10.21236/ada432434.

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Wallace, Margaret R., David Muir, and Martha Campbell-Thompson. Steroid Hormones in NF1 Tumorigenesis. Fort Belvoir, VA: Defense Technical Information Center, August 2002. http://dx.doi.org/10.21236/ada411283.

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Simpson, Jennifer K., and Francemary Modugno. Hormonal Determinants of Mammographic Density. Fort Belvoir, VA: Defense Technical Information Center, August 2003. http://dx.doi.org/10.21236/ada420073.

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Savaldi-Goldstein, Sigal, and Todd C. Mockler. Precise Mapping of Growth Hormone Effects by Cell-Specific Gene Activation Response. United States Department of Agriculture, December 2012. http://dx.doi.org/10.32747/2012.7699849.bard.

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Plant yield largely depends on a complex interplay and feedback mechanisms of distinct hormonal pathways. Over the past decade great progress has been made in elucidating the global molecular mechanisms by which each hormone is produced and perceived. However, our knowledge of how interactions between hormonal pathways are spatially and temporally regulated remains rudimentary. For example, we have demonstrated that although the BR receptor BRI1 is widely expressed, the perception of BRs in epidermal cells is sufficient to control whole-organ growth. Supported by additional recent works, it is apparent that hormones are acting in selected cells of the plant body to regulate organ growth, and furthermore, that local cell-cell communication is an important mechanism. In this proposal our goals were to identify the global profile of translated genes in response to BR stimulation and depletion in specific tissues in Arabidopsis; determine the spatio-temporal dependency of BR response on auxin transport and signaling and construct an interactive public website that will provide an integrated analysis of the data set. Our technology incorporated cell-specific polysome isolation and sequencing using the Solexa technology. In the first aim, we generated and confirmed the specificity of novel transgenic lines expressing tagged ribosomal protein in various cell types in the Arabidopsis primary root. We next crossed these lines to lines with targeted expression of BRI1 in the bri1 background. All lines were treated with BRs for two time points. The RNA-seq of their corresponding immunopurified polysomal RNA is nearly completed and the bioinformatic analysis of the data set will be completed this year. Followed, we will construct an interactive public website (our third aim). In the second aim we started revealing how spatio-temporalBR activity impinges on auxin transport in the Arabidopsis primary root. We discovered the unexpected role of BRs in controlling the expression of specific auxin efflux carriers, post-transcriptionally (Hacham et al, 2012). We also showed that this regulation depends on the specific expression of BRI1 in the epidermis. This complex and long term effect of BRs on auxin transport led us to focus on high resolution analysis of the BR signaling per se. Taking together, our ongoing collaboration and synergistic expertise (hormone action and plant development (IL) and whole-genome scale data analysis (US)) enabled the establishment of a powerful system that will tell us how distinct cell types respond to local and systemic BR signal. BR research is of special agriculture importance since BR application and BR genetic modification have been shown to significantly increase crop yield and to play an important role in plant thermotolerance. Hence, our integrated dataset is valuable for improving crop traits without unwanted impairment of unrelated pathways, for example, establishing semi-dwarf stature to allow increased yield in high planting density, inducing erect leaves for better light capture and consequent biomass increase and plant resistance to abiotic stresses.
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