Isoenzymes
Mostrando 25-36 de 473 artigos, teses e dissertações.
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25. Condições de armazenamento e conservação do potencial fisiológico de sementes de diferentes genótipos de milho / Storage conditions and seed performance of different corn genotypes
Seed storability is affected by several factors including genotype and environmental conditions. Corn seed producers are highly concerned with variations in seed longevity of different hybrids, resulting in lower performance than desired during the normal sowing season as much as during off season times. The objective of this research was to evaluate the eff
Publicado em: 2011
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26. Modelagem de nicho em espécies de plantas do Cerrado e distribuição espacial da variabilidade genética / Niche modeling of plants species from the Cerrado and spatial distribution of genetic variability
Ecological and evolutionary factors may explain the patterns of intrapopulation variability across the geographic distribution of a species. More suitable habitats, in ecological terms, allow the survival of greater number of individuals, which increases the genetic variability in the population, while in less suitable habitats, because of smaller population
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2010
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27. Melatonina, isoenzimas de glutationa S-transferases e estresse oxidante em pacu Piaractus mesopotamicus (Holmberg, 1887) / Melatonin, Glutathione S-transferases isoenzymes, and oxidative stress in pacu, Piaractus mesopotamicus (Holmberg, 1887).
Oxygen is vital for vertebrates. However, changes in the levels of dissolved oxygen in water might cause oxidative stress in fishes because the shortage of oxygen followed by reoxygenation originates reactive oxygen species (ROS) inside cells. Higher intracellular levels of ROS favor alterations of proteins, phospholipids and nucleic acid molecules, which re
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/03/2010
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28. Frequências alélicas e genotípicas das isoformas CYP2B6 e CYP2C8 na população de Moçambique / Allele and genotype frequencies of Cytochrome P450: CYP2B6 in Mozambican population
A malária é uma doença infecciosa que ao lado da AIDS e da tuberculose, constituem as três principais causas de mortalidade no mundo, sendo responsáveis por cerca de seis milhões de mortes por ano. De acordo com a OMS, de 300 a 500 milhões de novos episódios de malária e mais de dois milhões de mortes ocorrem por ano, principalmente entre crianças
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2010
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29. DiscriminaÃÃo das isoenzimas da adenosina desaminase (ADA) em fluidos corporais humanos. / Discrimination of isoenzymes of adenosine deaminase (ADA) in human body fluids.
A adenosina desaminase (ADA â E.C.3.5.4.4.) à uma enzima fundamental no catabolismo das purinas. Ela catalisa a desaminaÃÃo da adenosina ou 2âdeoxi-adenosina produzindo amÃnia e inosina ou 2â-deoxi-inosina, respectivamente. Sua atividade à expressa por 2 isoenzimas presentes em 3 isoformas. A ADA1 (36kDa) ou ADA1 ligada ao CD26 (280kDa) sÃo amplamen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/01/2010
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30. Biomphalaria alexandrina snails as immunogens against Schistosoma mansoni infection in mice
Despite effective chemotherapy, schistosomiasis remains the second largest public health problem in the developing world. Currently, vaccination is the new strategy for schistosomiasis control. The presence of common antigenic fractions between Schistosoma mansoni and its intermediate host provides a source for the preparation of a proper vaccine. The object
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-11
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31. Isoenzymatic polymorphism in the leaf-cutting ant Atta capiguara Gonçalves (hymenoptera: formicidae)
This study was carried out to analyze the genetic population structure of Atta capiguara from 12 nests collected in Tapejara in the state of Paraná, Brazil, using isoenzyme polymorphisms. The analyzed isoenzymes were esterases (EST - EC 3.1.1.1), acid phosphatase (ACP - EC 3.1.3.2) and carbonic anhydrase (CA - EC 4.2.1.1). Ten loci were found in A.capiguara
Neotropical Entomology. Publicado em: 2010-02
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32. Structural and regulatory differences in amylase isoenzymes in germinating Brazilian barley cultivars
The amylase electrophoretic patterns of 10 Brazilian brewing-barley varieties with different malting grades and diastatic power were analyzed during the 7-day germination which occurs during the malting process. Intra and inter-variety genetic variability was observed at both the structural and regulatory level. In the first few days after germination all va
Publicado em: 2010
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33. Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans / Caracterização de variantes de estirpes de Bradyrhizobium elkanii and B. japonicum e comportamento simbiótico em soja
Variantes em estirpes de rizóbio usadas na produção de inoculantes não são desejáveis e podem propiciar resultados inesperados na inoculação da leguminosa. Estudou-se a variabilidade nas características fenotípicas e a estabilidade genética das estirpes de Bradyrizobium recomendadas para a inoculação em soja. Foram isolados variantes com morfolo
Publicado em: 2010
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34. The 5 alpha-reductase type 1, but not type 2, gene is expressed in anagen hairs plucked from the vertex area of the scalp of hirsute women and normal individuals
The aim of the present study was to determine the expression of the genes for type 1 (SDR5A1) and type 2 (SDR5A2) 5α-reductase isoenzymes in scalp hairs plucked from 33 hirsute patients (20 with polycystic ovary syndrome and 13 with idiopathic hirsutism) and compare it with that of 10 men and 15 normal women. SDR5A1 and SDR5A2 expression was estimated by RT
Publicado em: 2010
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35. Influence of progesterone on GAD65 and GAD67 mRNA expression in the dorsolateral striatum and prefrontal cortex of female rats repeatedly treated with cocaine
Female rats are intensely affected by cocaine, with estrogen probably playing an important role in this effect. Progesterone modulates the GABA system and attenuates the effects of cocaine; however, there is no information about its relevance in changing GABA synthesis pathways after cocaine administration to female rats. Our objective was to investigate the
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-11
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36. Molecular weight estimation of esterase isoenzymes in closely related Drosophila Species (Diptera: Drosophilidae) in non-denaturing polyacrylamide gel electrophoresis
Neste trabalho, um método que permite a estimativa do peso molecular de duas esterases conhecidas e intimamente relacionadas, encontradas em Drosophila mojavensis e sua espécie aparentada D. arizonae, é descrito. Este método é realizado utilizando a técnica de eletroforese em diferentes concentrações de gel e aplicando os princípios de Fergunson. As
Brazilian Archives of Biology and Technology. Publicado em: 2009-10