Bioenergetic
Mostrando 13-24 de 69 artigos, teses e dissertações.
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13. "Estimativa das contribuições dos sistemas energéticos e do gasto energético total na escalada esportiva indoor" / ESTIMATIVE OF ENERGETICS SYSTEMS CONTRIBUTIONS AND COST ENERGETIC IN INDOOR ROCK CLIMBING
The purpose of the present study was to investigate the contributions of the energetic systems and the total energetic cost, during the indoor rock climbing. The anthropometric variables, body composition, upper limbs maximal aerobic power and the Wingate test for the upper limbs were evaluated in 14 climbers (Elite group = 7; Recreation group = 7). Besides,
Publicado em: 2005
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14. Grounding in Bioenergetic Analysis. An update. / Grounding na análise Bioenergética: Uma proposta de atualização.
O objetivo deste trabalho foi aprofundar e atualizar o conceito do grounding na Análise Bioenergética. Esta abordagem combina os princípios fundamentais da psicanálise com o trabalho direto no organismo visto do ponto de vista do seu desenvolvimento energético, emocional e relacional. Os dois paradigmas da psicanálise, pulsional e objetal, foram discut
Publicado em: 2005
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15. Uncoupler-resistant mutants of bacteria.
The chemiosmotic model of energy transduction offers a satisfying and widely confirmed understanding of the action of uncouplers on such processes as oxidative phosphorylation; the uncoupler, by facilitating the transmembrane movement of protons or other compensatory ions, reduces the electrochemical proton gradient that is posited as the energy intermediate
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16. In Vivo Monitoring of Intracellular ATP Levels in Leishmania donovani Promastigotes as a Rapid Method To Screen Drugs Targeting Bioenergetic Metabolism
A method for the rapid screening of drugs targeting the bioenergetic metabolism of Leishmania spp. was developed. The system is based on the monitoring of changes in the intracellular ATP levels of Leishmania donovani promastigotes that occur in vivo, as assessed by the luminescence produced by parasites transfected with a cytoplasmic form of Phothinus pyral
American Society for Microbiology.
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17. Charged Pair Current Networks in Bioenergetics
The operation of bioenergetic systems is postulated to be based on charged pair networks. The basic elements of the networks are pairs of opposite charges accompanied by conformational changes of the protein medium. The elementary events are the separation and recombination of charged pairs and partner exchange between two such pairs. The last event makes th
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18. Bioenergetic Pattern of Isolated Type II Pneumocytes in Air and during Hypoxia
The bioenergetic pattern of a cell clone derived from rat lung with ultrastructural and biochemical characteristics like those of type II pneumocytes (T-II-P), has been studied in a tissue culture system. During air cultivation, these cells have a high rate of aerobic and anaerobic glycolysis associated with high activities of two rate-limiting enzymes in gl
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19. Brain and skeletal muscle bioenergetic failure in familial hypobetalipoproteinaemia.
OBJECTIVE: To determine whether a multisystemic bioenergetic deficit is an underlying feature of familial hypobetalipoproteinaemia. METHODS: Brain and skeletal muscle bioenergetics were studied by in vivo phosphorus MR spectroscopy (31P-MRS) in two neurologically affected members (mother and son) and in one asymptomatic member (daughter) of a kindred with fa
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20. mtDNA replicative potential remains constant during ageing: polymerase gamma activity does not correlate with age related cytochrome oxidase activity decline in platelets.
Progressive age-related oxidative phosphorylation (OxPhos) decline is well known in human tissues. Depletion of mitochondrial DNA (mtDNA) causes OxPhos defects in patients with myopathic syndromes and deficient mtDNA replication has been observed in cells cultured from patients with mitochondrial disease. Patients undergoing treatment for AIDS develop OxPhos
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21. Bioenergetic Conditions of Butyrate Metabolism by a Syntrophic, Anaerobic Bacterium in Coculture with Hydrogen-Oxidizing Methanogenic and Sulfidogenic Bacteria †
The butyrate-oxidizing, proton-reducing, obligately anaerobic bacterium NSF-2 was grown in batch cocultures with either the hydrogen-oxidizing bacterium Methanospirillum hungatei PM-1 or Desulfovibrio sp. strain PS-1. Metabolism of butyrate occurred in two phases. The first phase exhibited exponential growth kinetics (phase a) and had a doubling time of 10 h
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22. Effects of thyroid hormones on skeletal muscle bioenergetics. In vivo phosphorus-31 magnetic resonance spectroscopy study of humans and rats.
The pathophysiology of the myopathy in dysthyroid states is poorly understood. We therefore tested the effects of thyroid hormones on muscle bioenergetics in humans and rats, using in vivo 31P NMR. Two hypothyroid patients had: low phosphocreatine to inorganic phosphate ratio (PCr/Pi) at rest, increased PCr depletion during exercise and delayed postexercise
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23. The Second Law of Thermodynamics in Bioenergetics
Bioenergetic processes are viewed as processes of free energy transduction. The free energies of both local equilibrium and fluctuation states are being considered. It is shown that the exchange of thermal energy with the surrounding medium, acting as a reservoir, does not violate the second law of thermodynamics within broad limits. There is sufficient lati
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24. Bioenergetic properties and viability of alkalophilic Bacillus firmus RAB as a function of pH and Na+ contents of the incubation medium.
The bioenergetic properties and viability of obligately alkalophilic Bacillus firmus RAB have been examined upon incubation in alkaline and neutral buffers in the presence or absence of added Na+. At pH 10.5, cells incubated in the absence of Na+ exhibited an immediate rise in cytoplasmic pH from less than 9.5 to 10.5, and they lost viability very rapidly. V