Deactivation Mechanisms
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. Resting spontaneous baroreflex sensitivity and cardiac autonomic control in anabolic androgenic steroid users
OBJECTIVES: Misuse of anabolic androgenic steroids in athletes is a strategy used to enhance strength and skeletal muscle hypertrophy. However, its abuse leads to an imbalance in muscle sympathetic nerve activity, increased vascular resistance, and increased blood pressure. However, the mechanisms underlying these alterations are still unknown. Therefore, w
Clinics. Publicado em: 21/05/2018
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2. Sobre a estabilidade de catalisadores de cobalto suportados durante a reforma do etanol
Catalisadores de cobalto suportados em γ-alumina e aluminato de magnésio modificados com lantânio e cério foram aplicados a diferentes condições de reforma do etanol. O desafio inicial foi tentar controlar a taxa de acúmulo de carbono, um dos principais fatores de desativação de catalisadores em condições de reforma a vapor do etanol. Análise
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/06/2012
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3. Water deprivation and the double- depletion hypothesis: common neural mechanisms underlie thirst and salt appetite
Water deprivation-induced thirst is explained by the double-depletion hypothesis, which predicts that dehydration of the two major body fluid compartments, the extracellular and intracellular compartments, activates signals that combine centrally to induce water intake. However, sodium appetite is also elicited by water deprivation. In this brief review, we
Brazilian Journal of Medical and Biological Research. Publicado em: 05/04/2007
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4. Estudo da ReaÃÃo de Desidro-aromatizaÃÃo nÃo oxidativa do Metano em Reator de Leito Fixo Diferencial com catalisador Ru- Mo/HZSM-5
Chemical routes suitable for the activation of methane to produce valuable products are limited and its achievement consists in a challenge to the chemistry of the natural gas conversion. Although remarkable progresses have been achieved on the methane dehydroaromatization (MDA) reaction, low conversion caused by severe thermodynamic limitations, coke format
Publicado em: 2007
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5. Chemotactic deactivation of human neutrophils: evidence for nonspecific and specific components.
Human polymorphonuclear neutrophils have been preexposed to activated complement as zymosan-activated serum (ZAS) or to the chemotactic oligopeptide N-formyl methionylphenylalanine (F-Met-Phe). Spontaneous migration and chemotactic responses toward the deactivating and other cytotaxins were monitored after washing and resuspension of cells in cytotaxin-free
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6. RGS9 Concentration Matters in Rod Phototransduction
The transduction of light by retinal rods and cones is effected by homologous G-protein cascades whose rates of activation and deactivation determine the sensitivity and temporal resolution of photoreceptor signaling. In mouse rods, the rate-limiting step of deactivation is hydrolysis of GTP by the G-protein-effector complex, catalyzed by the RGS9 complex. H
The Biophysical Society.
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7. Deactivation kinetics of different components of calcium inward current in the membrane of mice sensory neurones.
1. Deactivation kinetics of different components of calcium inward current were analysed by measuring 'tail currents' in intracellularly perfused sensory neurones isolated from dorsal root ganglia of newborn mice. 2. Deactivation of a low-threshold inactivating component had a mono-exponential time course with time constants that decreased as the potential w
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8. Immunodepression in the surgical patient and increased susceptibility to infection
Multiple organ failure is the major problem in intensive care patients. The failure of the organ 'immune system' is frequently overlooked, however. In this issue the article by Angele and Faist provides an excellent review of the topic. Deactivation of monocyte and lymphocyte functions seems to play a key role in post-traumatic immunodepression. To accompany
BioMed Central.
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9. Concentration-jump analysis of voltage-dependent conductances activated by glutamate and kainate in neurons of the avian cochlear nucleus.
We have examined the mechanisms underlying the voltage sensitivity of alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate receptors in voltage-clamped outside-out patches and whole cells taken from the nucleus magnocellularis of the chick. Responses to either glutamate or kainate had outwardly rectifying current-voltage relations. The rate and extent of des
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10. Fetuin (α2-HS-glycoprotein) opsonizes cationic macrophagedeactivating molecules
Macrophages become activated by bacterial endotoxin (lipopolysaccharide) and other stimuli to release proinflammatory cytokines and NO. To prevent release of toxic or potentially lethal quantities of these factors, the state of macrophage activation is counter-regulated by anti-inflammatory mediators (e.g., glucocorticoid hormones, interleukin 10, and transf
The National Academy of Sciences.
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11. Influence of serum-derived chemotactic factors and bacterial products on human neutrophil chemotaxis.
The chemotaxis of neutrophils has been shown to be modulated by serum factors, tissue factors, bacterial products, and a host of other substances. In vivo, these factors may act in concert with each other to modify neutrophil movement. We examined the effect of aggregated gamma globulin-activated serum (AS), bacterial factors, and endotoxin either alone or i
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12. Monocyte deactivation by interleukin 10 via inhibition of tyrosine kinase activity and the Ras signaling pathway.
Activation of monocytes by bacterial lipopolysaccharides (LPSs) is a central component in the pathogenesis of septic shock syndrome. Interleukin 10 (IL-10) is a potent monocyte-deactivating factor and transcriptionally inhibits LPS-induced expression of proinflammatory mediators. The intracellular signaling pathways of LPS have been only partially characteri