L Histidine
Mostrando 13-24 de 519 artigos, teses e dissertações.
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13. Comparative analysis of two component signal transduction systems of the Lactobacillus acidophilus group
The Lactobacillus acidophilus group is a phylogenetically distinct group of closely related lactobacilli. Members of this group are considered to have probiotic properties and occupy different environmental niches. Bacteria generally sense and respond to environmental changes through two component systems (TCSs) which consist of a histidine protein kinase (H
Brazilian Journal of Microbiology. Publicado em: 2011-03
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14. Characterization of storage proteins, amino acid profile and enzymes involved in lysine metabolism in genetic modified barley (Hordeum vulgare L.) / Caracterização de proteínas de reserva, perfil de aminoácidos e enzimas envolvidas no metabolismo de lisina em cevada (Hordeum vulgare L.) geneticamente modificada
Cereals represent an important source of protein to human food and animal feed. However, they are characterized by low nutritional quality of proteins due to the unbalanced composition of amino acids, caused by the excess of the amino acids proline and glutamine and deficiency of lysine, threonine and tryptophan. The prolamin storage proteins constitute 50%
Publicado em: 2011
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15. L-histidine provokes a state-dependent memory retrieval deficit in mice re-exposed to the elevated plus-maze
The effects of L-histidine (LH) on anxiety and memory retrieval were investigated in adult male Swiss Albino mice (weight 30-35 g) using the elevated plus-maze. The test was performed on two consecutive days: trial 1 (T1) and trial 2 (T2). In T1, mice received an intraperitoneal injection of saline (SAL) or LH before the test and were then injected again and
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-01
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16. L-histidine enhances learning in stressed zebrafish
The aim of the present study was to determine the effect of the histaminergic precursor L-histidine and the H3 receptor antagonist thioperamide on the learning process of zebrafish submitted or not to confinement stress. On each of the 5 consecutive days of experiment (D1, D2, D3, D4, D5), animals had to associate an interruption of the aquarium air supply w
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-01
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17. L-histidine reduces inhibitory avoidance in Carassius auratus submitted to cerebellar ablation
The effect of post-training treatment with L-histidine (LH) on the memory consolidation of inhibitory avoidance was investigated in Carassius auratus submitted to cerebellar ablation. The inhibitory avoidance procedure included 3 days: one habituation day, one training day (5 trials, T1-T5) and one test day. On the training day, each fish was placed individu
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-01
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18. Papel do sistema histaminérgico nos processos de aprendizagem e memória em Carassius auratus após ablação cerebelar
This study investigated the effect of post-training treatment with L-histidine, Pyrilamine and Zolantidine on the memory consolidation of inhibitory avoidance in Carassius auratus submitted to cerebellar ablation. Cerebellar ablation was performed 3 days before the experiment. The inhibitory avoidance procedure included one habituation day, one training day
Publicado em: 2009
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19. Determinação simultânea de cátions empregando eletroforese capilar com detecção condutométrica sem contato em equipamento construído em laboratório
This work describes the development of a home-made capillary electrophoresis (CE) system based on the capacitively coupled contactless conductivity detection (C4D) for the separation of the metallic species Zn2+, Cr3+, Pb2+, Cd2+, Co2+, Cu2+, Ni2+ e Tl+. A background electrolyte composed of MES/Histidine 0,02 mol L-1 (pH 5.0) was optimized for the separation
Química Nova. Publicado em: 2009
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20. Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination
O presente trabalho reporta o desenvolvimento de um novo método voltamétrico para análise de íons ouro(III) usando eletrodo de carbono impresso modificado com poli-L-histidina. O procedimento é baseado no acúmulo do complexo [AuCl4]-, na superfície do eletrodo sob potencial de circuito aberto e tempo de acúmulo controlado. Parâmetros que influenciam
Journal of the Brazilian Chemical Society. Publicado em: 2009
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21. Caracterização estrutural do gene que codifica a histidina quinase slnCl1 e sua relação com a patogenicidade, osmorregulação e resistência a fungicidas em Colletotrichum lindemuthianum / Structural characterization of the gene slnCl1 coding for a histidine kinase and its relation to pathogenicity, osmoregulation and fungicide resistance in Colletotrichum lindemuthianum
O fungo filamentoso Colletotrichum lindemuthianum (Sacc &Magnus) Briosi &Cav., agente causal da antracnose, é um importante patógeno do feijoeiro comum (Phaseolus vulgaris L.). Esse fungo é um excelente modelo de estudo para o entendimento do processo de infecção de fungos fitopatogênicos. Por meio de mutagênese por inserção de plasmídeo foi obtido
Publicado em: 2009
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22. ATIVIDADE ANTIMICROBIANA DO Pg-AMP1 RECOMBINANTE, UM PEPTÍDEO RICO EM GLICINA, ISOLADO DE GOIABA (Psidium guajava L.)
The search for new antibiotics of broad spectrum of activity has increased in recent decades due to the increasing number of bacteria resistant to conventional antibiotics. The Pg-AMP1 recombinant peptide expressed in a heterologous system in Escherichia coli, strains showed antibacterial activity against Gram-positive and Gram-negative. From the sequence of
Publicado em: 2009
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23. Protocol of assessment for species toxity mercury in natural water / Protocolo de avaliação do mercurio potencialmente toxico em aguas naturais
A protocol for the assessment of potentially toxic mercury in natural waters has been developed in accordance to the following stages: (i) research for a selective reductant of potentially toxic mercury species present in natural water samples; (ii) method optimization; (iii) experimental calibration carried out with solutions containing 50 mg L of Hg and di
Publicado em: 2009
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24. DEVELOPMENT OF A CAPILLARY ELECTROPHORESIS SYSTEM WITH CONTACTLESS CONDUCTIVITY DETECTION (C4D) FOR THE SEPARATION OF INORGANIC IONS / DESENVOLVIMENTO DE EQUIPAMENTO DE ELETROFORESE CAPILAR COM DETECÇÃO POR CONDUTIVIDADE SEM CONTATO PARA A SEPARAÇÃO DE ÍONS INORGÂNICOS
This work describes the development and evaluation of a home-made capillary electrophoresis (CE) system based on the capacitively coupled contactless conductivity detection (C4D) for the application in capillary zone electrophoresis (CZE). The C4D detection is based on prototypes previously described in the literature. The equipment constructed has a hydrody
Publicado em: 2009