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Dissertations / Theses on the topic 'Parasitology'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Gracenea, Zugarramurdi Mercedes. "Contribución al conocimiento de determinados aspectos de la bionomia de Brachylaima ruminae Mas-Coma et Montoliu 1985 (Trematoda: Brachylaimidae)." Doctoral thesis, Universitat de Barcelona, 1986. http://hdl.handle.net/10803/673000.

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Los estudios que sobre ciclos biológicos de Tremátodos Digénidos de la familia Brachylaimidae Joyeux et Foley, 1930 se lleva a cabo desde hace ya años en el Departamento de Parasitología de la Facultad de Farmacia de la Universidad de Barcelona nos condujeron, en su día, al inicio del presente trabajo destinado a prestar una pequeña contribución al conocimiento de la bionomía de una especie concreta de Trematodo perteneciente a la familia anteriormente citada: Brachylaima ruminae Mas-Coma et Montoliu, 1985. El ciclo evolutivo de esta especie de Digénido ha sido dilucidado totalmente por MAS-CO

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2

Pardini, Alessandra Xavier. "Utilização de preparações antigênicas de cisticercos de Taenia crassiceps para pesquisa de anticorpos na neurocisticercose (Taenia solium)." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/9/9136/tde-27012015-130517/.

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O complexo teníase-cisticercose humana representa importante problema sócio-econômico e de Saúde Pública em países em desenvolvimento, incluindo nosso país. A forma mais grave da doença decorre da localização de cisticercos no Sistema Nervoso Central, a neurocisticercose. Devido à dificuldade de obtenção de parasitas a partir de suínos naturalmente infectados estudamos como fonte alternativa, preparações antigênicas de cisticercos de Taenia crassiceps (antígeno heterólogo), para pesquisa de anticorpos anti-cisticercos em líquido cefalorraquiano (LCR) de pacientes com neurocisticercose. Foram e

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3

Hofstatter, Bianca Delgado Menezes. "Avaliação de diferentes extratos enzimáticos fúngicos sobre ovos de Ancylostoma spp." Universidade Federal de Pelotas, 2013. http://repositorio.ufpel.edu.br/handle/ri/2323.

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Made available in DSpace on 2014-08-20T14:31:29Z (GMT). No. of bitstreams: 1 dissertacao_bianca_delgado_menezes_hofstatter.pdf: 621009 bytes, checksum: d3e850b42136cff101d9f300aaadacaf (MD5) Previous issue date: 2013-02-28<br>The role of companion animals or pets as zoonotic disease reservoirs has been recognized as a significant public health hazard throughout the world. Ancylostoma caninum and A. braziliense are zoonotic parasites which are transmitted to man through contact with soil contaminated with both eggs and larvae of these ancylostomids. The considerable prevalence of environmen

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Dallarés, Villar Sara Maria. "Twenty thousand parasites under the sea: a multidisciplinary approach to parasite communities of deep-dwelling fishes from the slopes of the Balearic Sea (NW Mediterranean)." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/402224.

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El Mar Mediterráneo profundo permanece en gran parte inexplorado, y, específicamente, las comunidades parásitas de los peces mediterráneos de aguas profundas son mayormente desconocidas. El principal objetivo de la presente tesis es caracterizar las comunidades parásitas de las importantes especies ícticas de aguas profundas siguientes: Mora moro (Risso, 1810), Phycis blennoides (Brünnich, 1768), Galeus melastomus Rafinesque, 1810, Scyliorhinus canicula (Linnaeus, 1758), Etmopterus spinax (Linnaeus, 1758) y Centroscymnus coelolepis Barbosa du Bocage and de Brito Capello, 1864. Otro propósito

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5

Pérez, García David. "A journey to the deeps of the sea: parasite communities of the Alepocephalidae and the Macrouridae in the Balearic Sea (NW Mediterranean)." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/402267.

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Tot i el gran nombre d’estudis del mar Mediterrani, el seu mar profund segueix sent en gran part desconegut, especialment en relació a la seva fauna parasitària. Els paràsits són components importants dels ecosistemes. Al trobar-se al llarg de la xarxa tròfica, aquests poden aportar informació sobre el seu hoste. També és d’esperar que l’hoste respongui als efectes perjudicials dels paràsits a diferents nivells. A més a més, les alteracions cito-histològiques i/o les variacions de certs marcadors bioquímics poden ser relacionades amb la presència de paràsits i ser útils per avaluar la salut de

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Dhorda, Mehul. "Molecular parasitology and diagnosis of Malaria in pregnancy." Paris 6, 2010. http://www.theses.fr/2010PA066405.

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Le paludisme reste la maladie parasitaire la plus répandue au monde dont les effets néfastes sont particulièrement sévères chez les enfants et les femmes enceintes. La morbidité liée au paludisme pendant la grossesse (PpG) prend souvent la forme d’une séquestration parasitaire dans le placenta, d’une anémie chez la femme et chez le nouveau-né et d’une réduction du poids de l’enfant à la naissance. L’ensemble de ces facteurs augmente le risque de la mortalité maternelle, fœtale et néonatale. Il y a un besoin urgent d’améliorer la prise en charge du PpG à savoir le traitement, le diagnostic et l

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7

Amorim, Jandui Almeida [UNESP]. "Levantamento de sarcofagídeos(Diptera) do Brasil incluindo a caracterização molecular de Peckia (Pattonella) intermutans (Walker)." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/87797.

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Made available in DSpace on 2014-06-11T19:23:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-04-30Bitstream added on 2014-06-13T19:08:44Z : No. of bitstreams: 1 amorim_ja_me_botib.pdf: 950896 bytes, checksum: 510efe38e747c38b3b0503fe22f6fe0a (MD5)<br>Tendo em vista a grande similaridade interespecífica, a identificação de muitos sarcofagídeos usando os caracteres morfológicos é complicada e, sob este aspecto, o desenvolvimento e a aplicação de ferramentas moleculares se mostram cada vez mais necessários à resolução taxonômica e sistemática de diversas espécies. Os dípteros da famíl

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8

Pedrassani, Daniela [UNESP]. "Aspectos morfológicos, imunológicos e epidemiológicos do Dioctophyme renale em cães no Distrito de São Cristóvão, Três Barras, Santa Catarina." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/103838.

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Made available in DSpace on 2014-06-11T19:32:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-11-16Bitstream added on 2014-06-13T19:22:39Z : No. of bitstreams: 1 pedrassani_d_dr_jabo.pdf: 2839127 bytes, checksum: e29898c79545e32be78e2f67b76b1d9d (MD5)<br>Universidade do Contestado-Campus Canoinhas

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Pedrassani, Daniela. "Aspectos morfológicos, imunológicos e epidemiológicos do Dioctophyme renale em cães no Distrito de São Cristóvão, Três Barras, Santa Catarina /." Jaboticabal : [s.n.], 2009. http://hdl.handle.net/11449/103838.

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Orientador: Adjair Antônio do Nascimento<br>Banca: Milton Hissashi Yamamura<br>Banca: Alessandro Francisco Talamini do Amarante<br>Banca: Vanete Thomaz Soccol<br>Banca: Rosangela Zacarias Machado<br>Não disponível.<br>Not available.<br>Doutor

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Gállego, Culleré M. (Montserrat). "Contribución al conocimiento de la acarofauna de los micromamíferos de la región catalana." Doctoral thesis, Universitat de Barcelona, 1986. http://hdl.handle.net/10803/672995.

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El desconocimiento generalizado de nuestra base de trabajo, la acarofauna, conlleva que, como paso previo a cualquier otro estudio, deba procederse primariamente a la tarea mucho más ingrata, y a veces poco reconocida, de realización de estudios faunísticos que son un medio indispensable para que la investigación acarológica pueda llevarse a cabo. Los estudios taxonómicos son otro paso necesario y obligado, tanto para la descripción de nuevas como para las deducciones filogenético-evolutivas que de las mismas puedan derivarse, dada la estrecha relación entre la especificidad de un parásito y s

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Katagiri, Satie [UNESP]. "Avaliação de duas técnicas coproparasitológicas convencionais e de um kit comercial na investigação da epidemiologia de parasitas gastrintestinais de cães no Estado de São Paulo." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/89304.

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Made available in DSpace on 2014-06-11T19:24:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-02-20Bitstream added on 2014-06-13T19:30:26Z : No. of bitstreams: 1 katagiri_s_me_botfmvz.pdf: 167133 bytes, checksum: ef0b4cbbb690eba49ecb859a6ee7a778 (MD5)<br>Universidade Estadual Paulista (UNESP)<br>As técnicas coproparasitológicas de concentração por sedimentação e por flutuação e o kit TF-Test® foram utilizadas na investigação da epidemiologia dos parasitas gastrintestinais de cães no Estado de São Paulo. Amostras de fezes de 129 cães errantes e de 125 domiciliados foram colhidas de o

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Nagata, Walter Bertequini. "Validação da técnica TF-Test Coccidia para detecção de Cryptosporidium spp. e Giardia spp. em crianças de pré-escola e seus respectivos cães (Canis familiaris) /." Araçatuba, 2019. http://hdl.handle.net/11449/183347.

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Orientador: Sílvia Helena Venturoli Perri<br>Resumo: A criptosporidiose e a giardíase são doenças gastrointestinais, com distribuição cosmopolita, causada, respectivamente, por um protozoário coccídio intracelular obrigatório e um parasito flagelado, que pode afetar humanos e animais. O objetivo neste projeto foi detectar por meio da técnica TF-Test Coccidia e pela reação em cadeia da polimerase (RCP), a ocorrência do Cryptosporidium spp. e a Giardia spp. em crianças de pré-escola e seus respectivos cães (Canis familiaris) do Município de Araçatuba, São Paulo, de maneira inédita. Para a identi

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13

Constantine, Clare Colleen. "Molecular markers, analysis and the population genetics of parasites." Thesis, Constantine, Clare Colleen (2002) Molecular markers, analysis and the population genetics of parasites. PhD thesis, Murdoch University, 2002. https://researchrepository.murdoch.edu.au/id/eprint/662/.

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In this study different molecular techniques are contrasted (RAPD's, allozyme, sequencing mtDNA, sequencing ribosomal spacers) and appropriate analytical methods (allelic and infinite-sites approaches; inbreeding and coalescent models) used for estimating population genetic parameters in parasites. A range of population genetic questions at different scales were chosen to emphasise the importance of tailoring techniques and analytical methods to the particular question being investigated. The realisation that each question formulated has a particular scale means the appropriate technique an

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Constantine, Clare Colleen. "Molecular markers, analysis and the population genetics of parasites /." Access via Murdoch University Digital Theses Project, 2002. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20050817.102006.

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Newman, Christopher. "The demography and parasitology of the Wytham Woods' badger population." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343438.

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Almeida, Fabiana Alves de [UNESP]. "Caracterização da resistência a anti-helmíntico de isolados de Haemonchus contortus e trichostrongylus colubriformis orieundo de ovinos." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/87795.

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Made available in DSpace on 2014-06-11T19:23:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-10-26Bitstream added on 2014-06-13T19:49:31Z : No. of bitstreams: 1 almeida_fa_me_botib.pdf: 203073 bytes, checksum: 9bdfd8107be2ad00c88771bd9a61ee7c (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O estudo teve por objetivo determinar o grau de eficácia da levamisol, albendazol, ivermectina, moxidectina, closantel e triclorfon em isolados de Haemonchus contortus e Trichostrongylus colubriformis. Quarenta e dois cordeiros da raça Santa Inês, com três meses de

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Rocha, Cláudia Solano [UNESP]. "Análise da relação filogenética entre Triatoma carcavalloi Jurberg, Rocha; Lent, 1998; Triatoma circummaculata Stal, 1859; Triatoma klugi Carcavallo, Jurberg, Lent; Galvão, 2001 e Triatoma rubrovaria Blanchard, 1843 (Hemiptera, Reduviidae) baseada no sequenciamento de genes do DNA mitocondrial e nuclear." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/127536.

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Made available in DSpace on 2015-09-17T15:24:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-11-22. Added 1 bitstream(s) on 2015-09-17T15:48:29Z : No. of bitstreams: 1 000842326.pdf: 1568778 bytes, checksum: 44ee70fd5854d8be4d8c71d1f4d50503 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>A subfamila Triatominae compreende 146 espécies, agrupadas em 18 gêneros e cinco tribos. O gênero Triatoma é o mais representativo da subfamília com 80 espécies descritas, as quais estão agrupadas em oito complexos e oito subcomplexos, sendo essa classificação baseada prin

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Amorim, Jandui Almeida. "Levantamento de sarcofagídeos(Diptera) do Brasil incluindo a caracterização molecular de Peckia (Pattonella) intermutans (Walker) /." Botucatu : [s.n.], 2009. http://hdl.handle.net/11449/87797.

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Orientador: Patrícia Jacqueline Thyssen<br>Banca: Wesley Augusto Conde Godoy<br>Banca: Roseli Tuan<br>Resumo: Tendo em vista a grande similaridade interespecífica, a identificação de muitos sarcofagídeos usando os caracteres morfológicos é complicada e, sob este aspecto, o desenvolvimento e a aplicação de ferramentas moleculares se mostram cada vez mais necessários à resolução taxonômica e sistemática de diversas espécies. Os dípteros da família Sarcophagidae, especialmente os de hábito necrófilo, têm recebido destaque no campo forense devido à constância com que são encontrados associados a c

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Rocha, Cláudia Solano. "Análise da relação filogenética entre Triatoma carcavalloi Jurberg, Rocha; Lent, 1998; Triatoma circummaculata Stal, 1859; Triatoma klugi Carcavallo, Jurberg, Lent; Galvão, 2001 e Triatoma rubrovaria Blanchard, 1843 (Hemiptera, Reduviidae) baseada no sequenciamento de genes do DNA mitocondrial e nuclear /." Araraquara, 2012. http://hdl.handle.net/11449/127536.

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Orientador : João Aristeu da Rosa<br>Banca: Maria Tercília Vilela de Azeredo Oliveira<br>Banca: José Clóvis do Prado Júnior<br>Banca: Marcos Takashi Obara<br>Banca: Carlos Eduardo de Almeida<br>Resumo: A subfamila Triatominae compreende 146 espécies, agrupadas em 18 gêneros e cinco tribos. O gênero Triatoma é o mais representativo da subfamília com 80 espécies descritas, as quais estão agrupadas em oito complexos e oito subcomplexos, sendo essa classificação baseada principalmente em características morfológicas. Triatoma rubravaria é considerado um importante vetor na transmissão da doença de

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Katagiri, Satie. "Avaliação de duas técnicas coproparasitológicas convencionais e de um kit comercial na investigação da epidemiologia de parasitas gastrintestinais de cães no Estado de São Paulo /." Botucatu : [s.n.], 2006. http://hdl.handle.net/11449/89304.

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Orientador : Teresa Cristina G. Oliveira-Sequeira<br>Banca: Lucia Helena O'Dwyer de Oliveira<br>Banca: Mara Regina Stip Balarin<br>Resumo: As técnicas coproparasitológicas de concentração por sedimentação e por flutuação e o kit TF-Test® foram utilizadas na investigação da epidemiologia dos parasitas gastrintestinais de cães no Estado de São Paulo. Amostras de fezes de 129 cães errantes e de 125 domiciliados foram colhidas de outubro de 2004 a setembro de 2005 e processadas de acordo com os protocolos do kit TF Test® e dos métodos de centrífugo-sedimentação e centrífugo-flutuação. Os seguintes

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Stewart, Alexander Thomas. "Eco-immunology : thermal variation and parasitology of the three-spined stickleback." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/95911/.

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Global warming and temperature variation are likely to have profound impacts on fish as ectotherms that are heavily reliant on environmental temperature for growth, development, metabolism and immunity. This study addresses the impact of climate change on the development of infection and immunity in three-spined sticklebacks (Gasterosteus aculeatus) and their common parasites. In addition to thermal consequences on host parasite interactions, the study also addressed the effects of co-infection on parasite intensities and pathology on host swimming ability. Experiments were designed to mimic g

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Wilmott, S. "Mathematical modelling and analysis of some problems in parasitology and ecology." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382699.

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Thawani, Neeta. "The contribution of host-and parasite-derived factors to erythropoietic suppression underlying the development of malarial anemia /." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111901.

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Severe anemia is the most prevalent life-threatening complication of malaria infection. In addition to destruction of red blood cells (RBC), decreased RBC production or erythropoietic suppression has been shown to contribute to malarial anemia. The mechanism of this suppression is unknown, but it is considered to be multifactorial since erythropoietic suppression can be observed in the presence of both inflammatory mediators and parasite-derived factors. Experiments presented in this thesis aimed at determining the role of host cytokines released in response to blood-stage malaria infection an

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Santos, Michelle Cardoso dos [UNESP]. "Resposta imunológica de cordeiros às infecções artificiais por Haemonchus contortus e Haemonchus placei." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/87793.

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Made available in DSpace on 2014-06-11T19:23:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-28Bitstream added on 2014-06-13T19:49:31Z : No. of bitstreams: 1 000731361.pdf: 750399 bytes, checksum: 349ccb1a1690653ecab3850aed937652 (MD5)<br>A proteção conferida pela resposta imunológica de cordeiros, às infecções seriadas com Haemonchus contortus (Hc) e Haemonchus placei (Hp) e desafios, por infecções homólogas e heterólogas, com ambas as espécies, foi avaliada. Quarenta e dois cordeiros, com peso corporal inicial médio de 21,3 kg, foram divididos em sete grupos experimentais. No

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Cruz, Leonardo Dominici [UNESP]. "Padrões ecológicos da relação de parasitismo entre ácaros mesostigmata e alguns roedores neotropicais." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/106546.

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Made available in DSpace on 2014-06-11T19:35:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-12-20Bitstream added on 2014-06-13T19:46:42Z : No. of bitstreams: 1 cruz_ld_dr_rcla.pdf: 1201063 bytes, checksum: cc322ba66d3b7aeaa96f2e1ae46979e9 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Ácaros mesostigmatídeos e seus roedores hospedeiros compreendem um dos mais ricos e diversos sistemas parasito-hospedeiro da região Neotropical. A maior parte do conhecimento disponível sobre este sistema refere-se a listas de ocorrências, descrições de espécies paras

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Cruz, Leonardo Dominici. "Padrões ecológicos da relação de parasitismo entre ácaros mesostigmata e alguns roedores neotropicais /." Rio Claro : [s.n.], 2012. http://hdl.handle.net/11449/106546.

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Orientador: Claudio José Von Zuben<br>Banca: Aricio Xavier Linhares<br>Banca: Gilberto Salles Gazêta<br>Banca: Fabio Akashi Hernandes<br>Banca: Karim Christina Scopinho Furquim<br>Resumo: Ácaros mesostigmatídeos e seus roedores hospedeiros compreendem um dos mais ricos e diversos sistemas parasito-hospedeiro da região Neotropical. A maior parte do conhecimento disponível sobre este sistema refere-se a listas de ocorrências, descrições de espécies parasitas e relações de especificidade hospedeira em escalas locais. Estudos ecológicos com o objetivo de procurar padrões de estruturas de comunidad

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Almeida, Fabiana Alves de. "Caracterização da resistência a anti-helmíntico de isolados de Haemonchus contortus e trichostrongylus colubriformis orieundo de ovinos /." Botucatu, 2009. http://hdl.handle.net/11449/87795.

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Orientador: Alessandro Francisco Talamini do Amarante<br>Banca: Maria Conceição Zocoller Seno<br>Banca: Raquel A. da Rocha de Oliveira<br>Resumo: O estudo teve por objetivo determinar o grau de eficácia da levamisol, albendazol, ivermectina, moxidectina, closantel e triclorfon em isolados de Haemonchus contortus e Trichostrongylus colubriformis. Quarenta e dois cordeiros da raça Santa Inês, com três meses de idade, foram infectados artificialmente com 4000 larvas infectantes (L3) de H. contortus e 4000 L3 de T. colubriformis. Os animais foram separados em sete grupos, com seis animais cada, os

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Santos, Michelle Cardoso dos. "Resposta imunológica de cordeiros às infecções artificiais por Haemonchus contortus e Haemonchus placei /." Botucatu, 2013. http://hdl.handle.net/11449/87793.

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Orientador: Alessandro Francisco Talamini do Amarante<br>Banca: Helder Louvandini<br>Banca: Paulo Francisco Domingues<br>Resumo: A proteção conferida pela resposta imunológica de cordeiros, às infecções seriadas com Haemonchus contortus (Hc) e Haemonchus placei (Hp) e desafios, por infecções homólogas e heterólogas, com ambas as espécies, foi avaliada. Quarenta e dois cordeiros, com peso corporal inicial médio de 21,3 kg, foram divididos em sete grupos experimentais. No primeiro grupo, 12 cordeiros receberam infecções seriadas (Is) 12 vezes (três vezes por semana) durante quatro semanas, com 5

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Taylor-Brown, Emilie. "Miasmas, mosquitoes, and microscopes : parasitology and the British literary imagination, 1885-1935." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/84851/.

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This thesis explores the complex and multi-form exchanges between parasitology and the British literary imagination in the period 1885 to 1935. This fifty-year period, which takes the institutionalisation of parasitology as its mid-point, was a significant cultural moment, witnessing the diversification of medicine into research specialisms. In the case of parasitology, this increasing specialisation was accompanied, seemingly paradoxically, by what we would now call interdisciplinarity. Parasitologists consciously engaged with literary myths of nationhood in order to garner widespread support

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Guilmot, Aline. "Production of IFN-gamma by neonatal Natural Killer cells in response to Trypanosoma cruzi and cross-talk with monocytes." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209457.

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La maladie de Chagas, due au protozoaire Trypanosoma cruzi, est un important problème de santé publique en Amérique latine. Le parasite peut se transmettre à l’homme via un vecteur de la famille des triatomes, par transfusion sanguine ou transplantation d’organe et congénitalement de la mère à son fœtus. Le Laboratoire de Parasitologie s’est particulièrement intéressé à la maladie de Chagas congénitale. Dans le cadre de cette thématique, le Laboratoire a montré que les nouveau-nés congénitalement infectés par T. cruzi développent une forte réponse lymphocytaire T CD8+ spécifique semblable à ce

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Júnior, Mauro Cardoso. "Taxonomia das linhagens de Acanthobothrium van Beneden, 1850 (Eucestoda: Tetraphyllidea) parasitas de Potamotrygonidae (Chondrichthyes: Myliobatiformes)." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/41/41133/tde-07122010-175601/.

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Membros de Acanthobothrium (Cestoda: Tetraphyllidea: Onchobothriidae) são primariamente parasitas elasmobrânquios em todos os oceanos. No entanto, algumas linhagens são encontradas em arraias de água doce da família Potamotrygonidae da região Neotropical. O reconhecimento das entidades taxonômicas que participam de um sistema parasita/hospedeiro é essencial para que estudos comparativos que visam elucidar os padrões e processos responsáveis pela diversificação destes systemas. Atualmente, 175 espécies são reconhecidas para o gênero, das quais apenas seis parasitam exclusivamente potamotrigoníd

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Luchetti, Natalia da Mata. "Revisão taxonômica do gênero Potamotrygonocestus Brooks & Thorson, 1976 (Eucestoda: Tetraphyllidea)." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/41/41133/tde-18012012-093037/.

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Membros do gênero Potamotrygonocestus (Eucestoda: Tetraphyllidea: Onchobothriidae) são parasitas exclusivos de raias da família Potamotrygonidae, endêmica da região Neotropical. Atualmente, são reconhecidas 7 espécies nominais para o gênero (P. magdalenensis, P. travassosi,P. amazonensis, P. maurae, P. fitzgeraldae, P. chaoi e P. marajoara), além de duas linhagens não descritas terem sido apontadas na última revisão taxonômica disponível. A taxonomia destes parasitas é tradicionalmente baseada em caracteres morfométricos e sofre com a plasticidade que a estrutura corpórea destes animais aprese

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Costa, Lisa D´Alva Sousa Nascimento. "Avaliação da sensibilização às fontes alergénicas mais comuns em associação com a prevalêcia parasitária em cães." Master's thesis, Universidade de Évora, 2019. http://hdl.handle.net/10174/26455.

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A presente dissertação está dividida em quatro partes: um capítulo sumário de parasitologia; os princípios básicos da alergologia veterinária; os princípios gerais da imunoalergologia e da imunoparasitologia; o estudo realizado de avaliação da sensibilização a ácaros do pó e de armazenamento, através da realização de testes intradérmicos, que permitiram a identificação de correlações de pares para os diferentes ácaros e correlações para os achados diagnósticos parasitológicos num grupo de 20 canídeos, tendo em conta as relações imunitárias estabelecidas. Obteve-se uma prevalência de infeção pa

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Olego-Fernandez, S. "A calpain-like multigene family in Trypanosoma brucei." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:5256ea6f-4da0-4d42-b77c-a0d2da6f3af2.

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Trypanosomatid parasites are unicellular eukaryotes characterised by the presence of a subpellicular array of microtubules, a single flagellum, and a kinetoplast (containing the condensed mitochondrial DNA). The majority of trypanosomatid species undergo complex life-cycles, alternating between a mammalian host and an insect vector. Progression through this life-cycle requires the differentiation of trypanosomatids into distinct, niche adapted developmental forms. Differentiation into each life-cycle stage involves important biochemical and morphological changes, including the remodelling of t

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Mueller-Graf, Christine D. M. "Ecological parasitism of baboons and lions." Thesis, University of Oxford, 1994. https://ora.ox.ac.uk/objects/uuid:ffd4ddb0-fbef-4be8-803f-cb3578f7e7e0.

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This thesis investigates the epidemiology of intestinal parasites in wild populations of two social animals, olive baboons (Papio anubis) in Gombe Stream National Park, Tanzania, East-Africa, and lions (Panthera leo) in the Serengeti and Ngorongoro-Crater, Tanzania. These populations have been observed for over 20 years and detailed information on individual hosts was available for analysis with the parasitological data allowing to address questions about the relationship of host genetics and social behaviour to parasite infection. The baboons were infected with seven different helminths as we

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Pilar, Ana Victoria. "Biochemical and molecular characterization of the glycosomal PTS2 import receptor peroxin 7 in «Leishmania donovani»." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32255.

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The Leishmania peroxin 7 (LmPEX7 or LdPEX7) is the receptor that translocates PTS2 signal-containing proteins into the glycosome. This microbody is unique to and crucial for the survival of trypanosomatids which include Leishmania and Trypanosoma, the causative agents of leishmaniasis and African sleeping sickness, respectively. Proteins are imported into the glycosome via two pathways, PTS1 and PTS2, which involves the formation of a PTS-receptor complex in the cytosol, docking of the complex on a transl

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Geukers, Karen. "Characterization of CFF in the sera of plasmodium-infected mice." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=104816.

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The objective of this study was to further characterize the inhibitory serum protein crisis form factor, or CFF, and identify candidate proteins responsible for CFF activity. Four models for serum CFF induction were tested: C57BL/6 mice infected with P. chabaudi adami AS, C57BL/6 mice inoculated with BCG + LPS, and BALB/c mice infected with P. chabaudi adami DS or DK. C57BL/6 mice infected with P. chabaudi adami AS produced sera with the most pronounced level of inhibitory activity and were used for CFF analysis. Heat inactivation did not affect CFF activity, indicating the observed effect

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El-Shehabi, Fouad. "Characterization of novel biogenic amine receptors in the human bloodfluke «Schistosoma mansoni»." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86610.

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The genome of the human bloodfluke Schistosoma mansoni encodes 18 putative biogenic amine-like G-protein-coupled receptors (GPCRs). These receptors are potential targets for the development of antischistosomal drugs. One of these sequences, SmGPR-1 (formerly SmGPCR), was previously cloned and was identified as a histamine receptor. In this study, we expanded the functional analysis of SmGPR-1 by studying its expression and tissue distribution both at the RNA and protein levels in different developmental stages of the parasite. In the second part of the study, we cloned and characterized two st

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Sen, Rajashree. "Structure-function analysis of RNA editing ligases and their interacting protein partners in the editosome complex of «Trypanosoma brucei»." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95053.

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Trypanosoma brucei is a parasite that causes the vector-borne disease African sleeping sickness. The mitochondrial mRNAs of T. brucei undergo post-transcriptional RNA editing to make mature, functional mRNAs. The final step of this process is catalyzed by the essential ligase, Kinetoplastid RNA Editing Ligase 1(KREL1) and closely related KREL2. This study is an in vitro characterization of interaction of KREL1 and KREL2 with binding partners KREPA2 and KREPA1, respectively, using full-length, truncated and point-mutated ligases. We have shown a strong, specific stimulatory effect of the intera

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Rao, Vijayaraghava. "Characterization of novel ligand-gated chloride channel subunits from «Haemonchus contortus»." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95130.

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Ligand-gated chloride channels (LGCCs) are key components that form the inhibitory neurotransmission system in animals. Nematodes possess LGCCs that are gated by unique ligands such glutamate, serotonin and acetylcholine. Higher living forms such as mammals are not known to possess similar receptors. Hence nematodes can be deemed to comprise a phylum with a divergent inhibitory neurotransmission system. Based on this premise, the current project aimed to better understand the inhibitory nervous system of the parasitic nematode, Haemonchus contortus through the characterization of novel LGCC su

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Rioux, Marie-Claire. "A study of the proteomics of fasciolosis." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106286.

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Fasciolosis is an economically important veterinary parasitic disease. Of the two causative agents, Fasciola hepatica and Fasciola gigantica, F. hepatica has a greater ability to effectively establish a primary infection and resist the host defences. Certain host species, such as cattle, are more resistant to reinfection than others, such as sheep. In order to gain a greater understanding of the host response to infection, proteomic analyses of sera from sheep and cattle infected with F. hepatica were undertaken. Twenty-six indicators of infection were validated by SELDI-TOF mass spectrometry

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Gonzalez, Santana Bibiana. "Cysteine proteases: potential serodiagnostic reagents for human Schistosomiasis and Fasciolosis." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110691.

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Schistosomiasis and fasciolosis are parasitic diseases that affect a great number of people, particularly in developing countries, and cause huge global morbidity. Diagnosis is essential for control, treatment and prognosis of the diseases and yet a simple, cheap, sensitive and specific assay is not readily available for either of them. In the current study, cathepsin B (SmCB) and cathepsin L1 (FhCL1) were investigated as potential diagnostic reagents to detect schistosomiasis and fasciolosis, respectively, in humans. The genes encoding SmCB and FhCL1 were expressed Pichia pastoris and the pro

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Solomon, Jonathan. "The localization and «in vitro» detection of «Brugia malayi» secreted proteins." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32546.

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Products excreted or secreted (ES) by parasitic nematodes may contribute to the processes of infection and tissue migration of the parasite, modulating the host immune response and host physiology. These ES products allow the parasite to persist and survive in conditions that would otherwise bar or destroy them. cDNAs encoding three known secreted proteins of Brugia malayi was cloned for expression in E. coli and subsequent protein purification. These proteins were chosen because they have been reported t

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Moreno, Yovany. "Characterization of secretory processes and the secretome of parasitic nematodes." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106464.

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Relatively little is known about the molecular mechanisms displayed by parasitic nematodes to infect a host; however, it has been generally recognized that successful parasitic nematode infections rely on their ability to release a variety of products commonly named Excretory-Secretory Products (ESP). To gain a deeper understanding of the mechanisms that lead to the establishment of filarial nematode infections, we collected and analyzed through 1D-SDS PAGE and LC-MS/MS the ESP of Brugia malayi adult females, adult males and microfilariae, one of the etiological agents of human lymphatic filar

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Diawara, Aïssatou. "Development of DNA assays for the detection of single nucleotide polymorphism associated with benzimidazole resistance, in human soil-transmitted helminths." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19242.

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Soil-transmitted helminths are parasitic worms of humans, causing many disabilities in tropical parts of the developing world. Control programs such as "The Focussing Resources on Effective School Health” (FRESH) Partnership have been implemented to remove human soil transmitted nematodes through large-scale use of benzimidazole anthelmintic drugs for school-aged children in developing countries. The benzimidazole drugs, albendazole and mebendazole are used as a single annual dose in areas where the burden is high. Unfortu

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Gomez, Gonzalez Maria. "«Leishmania»-macrophage interactions: regulations of protein tyrosine phosphatases and its implication in the outcome of infection." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40736.

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The outcome of Leishmania infection depends both on host and pathogen factors. Macrophages, the specialized host cell for uptake and intracellular development of Leishmania parasites, play a central role in the control of infection. Underlying their effector and accessory functions is the activation of signalling pathways, which in turn are largely controlled by events of protein phosphorylation. Consequently, the regulation of protein kinase and phosphatase activities results critical for the sequential progression of the signalling cascade, and therefore for the control of antimicrobial and

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Odiere, Maurice. "Energetic, morphologic and physiologic responses during «Heligmosomoides bakeri» (Nematoda) infection and protein deficiency in pregnant and lactating mice." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95137.

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This research investigated the concurrent effects of a gastrointestinal nematode infection Heligmosomoides bakeri, pregnancy, and protein deficiency (PD) during late pregnancy throughout lactation on energetic, morphologic and immunological responses in CD1 mice and their offspring. Our novel findings can be summarized broadly into three key themes: (i) energetics and resting metabolic rate, (ii) bone metabolism and (iii) immune development. This work highlights the largely independent ways in which the mouse responds to competing demands of pregnancy, infection, and PD. Pregnancy increased R

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Abu, Dayyeh Issa. "Alteration of macrophage signalling and functions by the protozoan parasite «Leishmania»." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66771.

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Parasites of the genus Leishmania are able to secure their survival and propagation within their host by altering key signalling pathways involved in the ability of macrophages (MØs) to directly kill pathogens or to activate cells of the adaptive immune system. One important step in this immune evasion process is the Leishmania-induced activation of host protein tyrosine phosphatase SHP-1. SHP-1 has been shown to directly inactivate JAK2 and Erk1/2, and to play a role in the negative regulation of several transcription factors involved in MØ activation such as: NF-B, STAT-1α

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McLean, James. "Purification and characterization of the Leishmania PTS2 receptor, Peroxin 7, an essential receptor for glycosme biogenesis." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110401.

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The trypanosomatid parasite Leishmania infects 12 million people in tropical countries. This neglected tropical disease causes debilitating and often fatal consequences in the absence of chemotherapeutic intervention. Consequently, there is a need to identify new drug targets to combat the increasing incidence of resistance to current treatments. An attractive drug target in these parasites is the glycosome, a unique microbody organelle that compartmentalizes several essential enzymatic pathways behind an impermeable membrane. The Leishmania major Peroxin 7 (LPEX7) is a receptor protein that r

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Moncada, Darcy Marie. "Entamoeba histolytica cysteine proteinases facilitate parasite invasion of the colon by disrupting the colonic mucus barrier." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85940.

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The protozoan parasite Entamoeba histolytica is the etiological agent of human amebiasis. Trophozoites colonize the colonic mucus layer and may invade the epithelium subsequent to overcoming the mucus barrier. MUC2 is the major gel-forming mucin secreted by goblet cells in the colon and serves to maintain epithelial barrier function as well as acting as a major host defense against invading pathogens. The polymerization of MUC2 monomers via the N- and C- terminal cysteine rich D-domains is essential for mucus gel formation and confers protection to the underlying mucosa. Amoebae secrete

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