Transport Through The Membrane
Mostrando 13-24 de 621 artigos, teses e dissertações.
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13. Efeito de um extrato de Artemísia Vulgaris L. marcação in vitro de constituintes sanguíneos com tecnécio-99m em ratos wistar / Efeito de um extrato de Artemísia Vulgaris L. marcação in vitro de constituintes sanguíneos com tecnécio-99m em ratos wistar
Artemisia vulgaris L..is used in folk medicine and in Traditional Chinese Medicine (TCM). This medicinal plant has been utilized as anticonvulsive, analgesic, antispasmodic effect, rheumatic pains, menstrual dyspepsia, asthenia, epilepsy, hepatitis, fevers, anemia and to expel parasites. In nuclear medicine, blood constituents are labeled with technetium-99m
Publicado em: 2008
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14. Mechanisms of synthesis and degradation of radical nitric oxide by mitochonderia of Arabidopsis thaliana / Mecanismos de sintese e degradação do radical oxido nitrico pela mitocondria de Arabidopsis thaliana
The objective of this work was to study the mechanisms of synthesis and degradation of NO by plant mitochondria, with emphasis on the influence of the NAD(P)H dehydrogenases and the alternative oxidase (AOX) in these processes. The experiments were carried out with mitochondria isolated from cells in culture of the model plant Arabidopsis thaliana. Initially
Publicado em: 2008
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15. Modelagem e simulação da operação de um reator de leito fixo catalitico envolto em membrana permseletiva / Modeling and simulation of fixed bed reactor wrapped with permselective membranes
Styrene is an important monomer in the manufacture of thermoplastic and synthetic rubbers. Most of the production is based on the catalytic dehydrogenation of ethylbenzene. The increase of the styrene productivity can be reached using permselectives membranes for hydrogen removal, suppressing the reversible and secondary reactions. This work presents the sim
Publicado em: 2007
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16. Estudo do Segmento Consenso Adjacente ao Domínio TM2 e parte do Domínio TM2 do Receptor P2X7: Dinâmica Molecular e Atividade de Canal Iônico. / Study of the segment adjacent consensus to domain TM2 and part of domain TM2 of receiver P2X7: molecular dynamics and activity of ionic canal.
The purinergic receptor P2X7 (P2X7R) is a membrane protein which forms channels in the presence of extracellular ATP. Once opened, the channels allow the transport of cations through the cellular membrane, being expressed preferentially in immune cells. Among all purinergic receptors, P2X7R has distinct characteristics from other P2X (P2XR) members. For exam
Publicado em: 2007
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17. ESTUDO MORFOFUNCIONAL DAS CÉLULAS DE SERTOLI DE RATOS ALBINOS TRATADOS COM ETOPOSIDE NA FASE PRÉ-PÚBERE. / Morphological and functional evalution of Sertoli cells from albino treated with etoposide during preopubertal phase. / ESTUDO MORFOFUNCIONAL DAS CÉLULAS DE SERTOLI DE RATOS ALBINOS TRATADOS COM ETOPOSIDE NA FASE PRÉ-PÚBERE. / Morphological and functional evalution of Sertoli cells from albino treated with etoposide during preopubertal phase.
Spermatogenesis is a complex and controlled process in which Sertoli cells play a key role. In the testis, endocrine, paracrine and autocrine mechanisms that control spermatogenesis occurrence. The Sertoli cells synthesize substances which are essential for these mechanisms. Among them is transferrin. This protein is an important iron transporter that binds
Publicado em: 2006
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18. Mitochondrial K+ transport and cardiac protection during ischemia/reperfusion
Mitochondrial ion transport, oxidative phosphorylation, redox balance, and physical integrity are key factors in tissue survival following potentially damaging conditions such as ischemia/reperfusion. Recent research has demonstrated that pharmacologically activated inner mitochondrial membrane ATP-sensitive K+ channels (mitoK ATP) are strongly cardioprotect
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-03
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19. Prevalencia de seis mutações no gene CFTR em portadores de fibrose cistica da região de Campinas
Cystic Fibrosis (FC) is a genetic autossomic recessive disease with an incidence of 1/2.500 life births and a carrier frequency of 1/25 in the caucasian population. The disease is progressive and present as a clinical manifestation the respiratory chronic blockage, male infertility and deficiency to gain weight caused for the damage to the exocrine pancreas.
Publicado em: 2005
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20. Análise da expressão gênica induzida por Diatraea saccharalis em cana-de-açúcar via macroarranjos de colônias bacterianas. / Analysis of expressed genes induced by Diatraea saccharalis in sugarcane using bacterial colonies arrays.
Large-scale sequencing and the application of expressed sequence tag (EST) technology has led to the identification of hundreds of thousands of genomic sequences from various organisms. Through projects like the Sugarcane Expressed Sequence Tag (SUCEST), DNA arrays technology could be applied in monitoring gene expression. The first step of this work was to
Publicado em: 2004
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21. Mitochondria, calcium and pro-apoptotic proteins as mediators in cell death signaling
Cellular Ca2+ signals are crucial in the control of most physiological processes, cell injury and programmed cell death through the regulation of a number of Ca2+-dependent enzymes such as phospholipases, proteases, and nucleases. Mitochondria along with the endoplasmic reticulum play pivotal roles in regulating intracellular Ca2+ content. Mitochondria are e
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-02
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22. Estudo do transporte passivo facilitado de acido ascorbico atraves de membrana liquida hidrofobica
In this work a physical chemical study of the transport of Ascorbic Acid (cis-a, b diol compound) through a hydrophobic liquid membrane (1,2-Diclhoroethane) carried by Phenylboronic acid was done by using a BLM (Bulk liquid membrane) conected to a continuous flow circuit. Initially the transport process was difficult to study due to the fast oxidation of the
Publicado em: 2002
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23. Avaliação de genes diferencialmente expressos em Xylella fastidiosa em condições de adesão
Xy/ella fastidiosa is a gram-negative and xylem-limited bacterium, which is the causal agent of diseases of several important crops, such as the Citrus Variegated Chlorosis in Brazil and the Pierce s disease in grapevine. Due the colonization in environment under high pressure, it is believed that the bacterium presents mechanisms of aggregation among the ce
Publicado em: 2002
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24. Riscos ocupacionais e acidentes do trabalho : uma realidade em unidade de terapia intensiva
This study, of character descriptive, identified and it evaluated the occupational risks the one that they are exposed the workers of nurse of an Intensive Care Unit (UTI) during your work day, as well as it identified the accidents of work of the Iast year, correlating them with the procedure that was being executed by the worker in the moment ofthe acciden
Publicado em: 2002