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Dissertations / Theses on the topic 'Vitamin B6. Pyridoxine'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Pittaya, Kanchanapakonchai Amnuay Thithapandha. "Effects of vitamin B6 on CC14 toxicities in rats /." abstract, 1986. http://mulinet3.li.mahidol.ac.th/thesis/2529/29E-Pittaya-K.pdf.

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2

Consiglieri, Vladi Olga. "Doseamento da vitamina B6 por espectrofotometria derivada no ultravioleta." Universidade de São Paulo, 1992. http://www.teses.usp.br/teses/disponiveis/9/9139/tde-10072008-170738/.

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Uma metodologia rápida e seletiva foi desenvolvida para a quantificação da piridoxina em medicamentos. O método foi padronizado para aplicação da espectrofotometria derivada no ultravioleta na análise direta da vitamina em preparações multivitamínicas sólidas (cápsulas) e líquidas (solução oral e injetável). As interferências do espectro UV convencional devidas aos excipientes (veículos) e demais fármacos presentes foram eliminados. As retas de calibração foram calculadas, obtendo-se, para a derivada de 1ª ordem, o coeficiente de correlação linear de 0.99997. Os resultados foram estatisti

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3

Garrido, Franco Marta. "Structural and functional studies of pyridoxine 5'-phostate synthase from e.coli." Doctoral thesis, Universitat Autònoma de Barcelona, 2002. http://hdl.handle.net/10803/3469.

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El piridoxal 5'-fosfato es la forma biocatalíticamente activa de la vitamina B6, siendo uno de los cofactores más versátiles de la naturaleza, el cuál tiene un papel central en el metabolismo de aminoácidos. Mientras que la mayoria de microorganismos y plantas pueden sintetizar la vitamina B6 de novo, los mamíferos se ven obligados a obtener uno de sus vitámeros a través de la dieta. La maquinaria biosintética de Escherichia coli es, de lejos, la mejor caracterizada y consiste en cuatro proteínas pdx. PdxJ, también conocida como piridoxina 5'-fosfato sintasa, es la enzima clave en esta via. Ca

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4

Bhonsle, Amrata. "Improved Solubility and Dissolution of BCS Class II drug Spironolactone by Formulating in Ternary Solid Dispersion with Carrier Beta-Cyclodextrin and Adjuvant Water Soluble Vitamin [Pyridoxine HCl (Vit B6)]." University of Toledo Health Science Campus / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=mco1404735377.

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5

Yianni, Yiannoula. "Aspects cinétiques des deux étapes de la réaction équilibrée entre les amino-acides (ou les céto-acides) et la forme aldéhydique (ou amine) du phosphate de la vitamine B6 : influence de la structure et de l'acidité, rôle catalytique des espèces complexées par les ions aluminium." Grenoble 1, 1988. http://www.theses.fr/1988GRE10041.

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6

Souza, Bianca Rodrigues de. "Quantificação das vitaminas do complexo B (B1, B2) e vitâmeros das vitaminas B3 e B6 em amostras de pólen apícola desidratado provenientes da Região Sul do Brasil." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-27052015-141055/.

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Entende-se por pólen apícola o resultado da aglutinação do pólen das flores, efetuado pelas abelhas operárias, mediante néctar e substâncias salivares, o qual é recolhido no ingresso da colmeia. A literatura descreve que esse alimento contém proteínas, carboidratos, lipídeos, vitaminas e minerais. De acordo com estudo prévio, amostras de pólen apícola in natura e desidratado, da cidade de Pariquera-Açu (São Paulo), apresentaram teores significativos de vitamina B1(tiamina) e B2 (riboflavina), além da presença dos vitâmeros da vitamina B3 (ácido nicotínico e nicotinamida) e B6 (piridoxal, pirid

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7

Yamamura, Ei-tora. "Biochemical and molecular biological studies on enzymatic synthesis of vitamin B6 derivatives and optically active carboxylic acids." Kyoto University, 2020. http://hdl.handle.net/2433/245820.

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Kyoto University (京都大学)<br>0048<br>新制・論文博士<br>博士(農学)<br>乙第13305号<br>論農博第2880号<br>新制||農||1074(附属図書館)<br>学位論文||R2||N5242(農学部図書室)<br>富山大学大学院理工学研究科生命環境科学専攻<br>(主査)教授小川順, 教授阪井康能, 教授栗原達夫<br>学位規則第4条第2項該当

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8

Lainé-Cessac, Pascale. "La pyridoxal kinase erythrocytaire humaine : son activation par les ions potassium, sodium, lithium ; son inhibition par les medicaments." Angers, 1996. http://www.theses.fr/1996ANGE0507.

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9

Teixeira, Caroline Pelegrina [UNESP]. "Suplementação de vitamina B6 em dietas práticas e purificadas no desempenho produtivo e resposta hemática da Tilápia do Nilo submetida a estímulo térmico." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/95272.

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Made available in DSpace on 2014-06-11T19:27:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-12-16Bitstream added on 2014-06-13T18:31:47Z : No. of bitstreams: 1 teixeira_cp_me_botfmvz.pdf: 259530 bytes, checksum: 826c003b1a1805b9d984d08e8e6b2d8d (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Universidade Estadual Paulista (UNESP)<br>A pesquisa teve por objetivo avaliar a suplementação de vitamina B6 em dietas práticas (Estudo – I) e purificadas (Estudo – II) sobre o desempenho produtivo e resposta hemática da tilápia do Nilo submetida a estímulo térmico.

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10

Yuen, Lao-Duien. "Part I. Studies involving the formation of pyridoxamine-5'-phosphate Schiff bases and their zinc(II) complexes ; Part II. Activity of partly metallated polymer in the decarboxylation of oxalacetic acid /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487262825075348.

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11

Teixeira, Caroline Pelegrina 1976. "Suplementação de vitamina B6 em dietas práticas e purificadas no desempenho produtivo e resposta hemática da Tilápia do Nilo submetida a estímulo térmico /." Botucatu : [s.n.], 2009. http://hdl.handle.net/11449/95272.

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Orientador: Margarida Maria Barros<br>Banca: Wilson Massamitu Furuya<br>Banca: Ricardo de Oliveira Orsi<br>Resumo: A pesquisa teve por objetivo avaliar a suplementação de vitamina B6 em dietas práticas (Estudo - I) e purificadas (Estudo - II) sobre o desempenho produtivo e resposta hemática da tilápia do Nilo submetida a estímulo térmico. O período experimental foi de 91 dias, Estudo - I, e 84 dias, Estudo - II. No Estudo - I, 192 alevinos com peso médio inicial de 8,41 ± 0,22 g, foram distribuídos aleatoriamente em 32 tanques-rede de 200L (quatro tanques-rede/ aquário de 1000 L). No Estudo -

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12

Chrisley, Barbara Mc. "Separation and quantitation of the seven forms of vitamin B-6 in plasma and 4-pyridoxic acid in urine of adolescent girls by reverse phase high performance liquid chromatography." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53934.

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The vitamin B-6 status of seemingly healthy adolescent girls was determined using several accepted and proposed parameters in an effort to establish guidelines for status evaluation. HPLC-derived plasma B-6 vitamer [pyridoxal phosphate (PLP), pyridoxine phosphate (PNP), pyridoxamine phosphate (PMP), pyridoxal (PL), pyridoxine (PN), and pyridoxamine (PM)] and 4-pyridoxic acid (4-PA) concentrations and urinary 4-PA levels of 28 white adolescent females, 12-15 years, having radiomonitored plasma PLP concentrations and coenzyme stimulation of erythrocyte alanine aminotransferase activities indicat

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13

Ruegg, Evonne Teresa Nicole. "Investigating the porphyrias through analysis of biochemical pathways." Thesis, University of Canterbury. Biochemistry, 2014. http://hdl.handle.net/10092/10257.

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ABSTRACT The porphyrias are a diverse group of metabolic disorders arising from diminished activity of enzymes in the heme biosynthetic pathway. They can present with acute neurovisceral symptoms, cutaneous symptoms, or both. The complexity of these disorders is demonstrated by the fact that some acute porphyria patients with the underlying genetic defect(s) are latent and asymptomatic while others present with severe symptoms. This indicates that there is at least one other risk factor required in addition to the genetic defect for symptom manifestation. A systematic review of the heme biosyn

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14

Alouane, Hamiroufou Loubna. "Préconditionnement myocardique et diabéte : effets aigus des AGEs sur le préconditionnement induit par la stimulation des récepteurs β1-adrénergiques et purinergiques. Rôle de la vitamine B6 (Pyridoxal-5- phosphate et pyridoxamine)". Thesis, Reims, 2012. http://www.theses.fr/2012REIMM202/document.

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Le diabète prédispose à des complications affectant divers organes comme le systémecardiovasculaire. La cardiopathie ischémique chez les patients diabétiques pourrait être liée àl'accumulation de produits avancés de glycation (AGEs). Dans les coeurs de rats ischémiques,l'expression des récepteurs aux AGEs et de ses ligands est considérablement augmentée etimpliquée dans les lésions de l'ischémie / reperfusion (I / R), même en absence de diabète. Ila été récemment rapporté que le myocarde humain diabétique ne peut pas être protégé par lepréconditionnement. Dans ce contexte, notre hypothèse étai

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15

Kaunda, Jean R. "Determination of vitamin B-6 and pyridoxine-glucoside in selected Malawi foods and the effect of preparation techniques on vitamin B-6 and pyridoxine-glucoside content." Thesis, 2002. http://hdl.handle.net/1957/25957.

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There were two main purposes to this study. The first was to determine the vitamin B-6 and pyridoxine β-glucoside content of selected foods commonly consumed in Malawi. The second was to examine the effect of preparation procedures of foods in Malawi on the content of vitamin B-6 and pyridoxine β- glucoside in foods. Seventeen plant foods commonly eaten in Malawi were determined for vitamin B-6 and pyridoxine β-glucoside using a microbiological assay. In addition, two commercial weaning foods, roasted maize-soy bean blend and extruded maize-soy bean blend, were also determined for vitamin B-6

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16

Sindihebura-Ruhumba, Pascaline. "Effect of controlled vitamin B-6 intake and pyridoxine supplementation on B-6 status of smokers." Thesis, 1999. http://hdl.handle.net/1957/27213.

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Previous studies have found that smoking may have a negative effect on vitamin B-6 indices and have demonstrated a possible association between smoking and depressed plasma pyridoxal-5'-phosphate (PLP) concentration. Individuals with plasma PLP values below the adequate level of 30 nmoles/L might benefit from consumption of vitamin B-6 supplements, but no data are available on vitamin B-6 status in smokers consuming a controlled vitamin B-6 intake and receiving a vitamin B-6 supplement. The objectives of this research were to assess vitamin B-6 status in smokers as compared to non-smokers rece

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17

Rosenberg, Jonathan. "Vitamin B6 Production in Bacillus subtilis." Doctoral thesis, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E32C-B.

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18

Bills, Nathan D. "In vivo and in vitro determination of the bioavailability of vitamin B-6 from plant foods containing pyridoxine glucoside." Thesis, 1990. http://hdl.handle.net/1957/25980.

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19

Raposo_Blouw, Sara. "The effects of marginal pyridoxine deficiency and high protein intakes on vitamin b6 status and enzymes in intermediary metabolism in rats." 2015. http://hdl.handle.net/1993/30684.

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Pyridoxal-5-phosphate (PLP), the active form of vitamin B6 (B6), is a co-factor for enzymes in macronutrient metabolism. Increasing protein intake may affect B6 by increasing PLP-dependent enzymes in amino acid metabolism, which may be more pronounced during moderate B6 deficiency. Decreased B6 status decreases PLP-dependent enzyme activity possibly altering macronutrient metabolism. We examined changing dietary carbohydrate: protein ratios in rats consuming recommended vs. moderately deficient intakes of pyridoxine (PN)-HCl, on plasma markers of B6 status and enzymes in intermediary metabolis

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20

Kular, Aneta. "An Assessment of Pyridoxine as a Biological Response Modifier During Colon Carcinogenesis." Thesis, 2007. http://hdl.handle.net/10012/3398.

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The main objective of this proposal was to investigate the effect of vitamin B6 on colon carcinogenesis in vivo. Two in vivo studies were conducted to determine the role of vitamin B6 as a biological modifier of colon carcinogenesis. It is hypothesized that vitamin B6 may serve as an antioxidant in vivo and will modulate colon carcinogenesis. In the first study, a 2X3 factorial experimental design was used to determine if three different levels of vitamin B6, classified as low, normal and high in conjunction with two different levels of protein intake, classified as normal or high, will affect

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