Implication de l'urodilatine dans les modifications hydro-électrolytiques induites chez l'homme par un décubitus à - 6°

Gauquelin, G.; Allevard, A. M.; Gharib, SD

doi:10.3109/13813459509047138

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…The ANP (99-126) radioimmunoassay was made after extraction with octadecylsilyl cartridges (Sep-Pack). Urodilatin was determined by a radioimmunoassay after extraction on Amberlite [5]. Concentrations of sodium and potassium were measured by canion-selective electrode system (Hitachi 7 17 Multi-analyzer) and creatinine and urea by a conventional Jaffe Method on Synchron CX3.…”

Section: Blood Analysesmentioning

confidence: 99%

Hormonal response to restraint in rhesus monkeys

Gauquelin‐Koch

Blanquie

Viso

et al. 1996

J of Medical Primatology

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The purpose of this study was to characterize the hormonal responses to a restraining system in four adult male rhesus monkeys (Macaca mulatta) in preparation for a spaceflight project. After the monkeys were accustomed to food and water (Phase I), blood-volume-regulating hormones were measured during three phases: 10 days in a metabolic cage (Phase II), 16 days sitting in a restrained position in a specially designed metabolism chair (Phase III) and 10 days in metabolic cage (Phase IV). An increase of active renin (30%) and vasopressin (25%) was observed at the end of Phase III. A decrease of atrial natriuretic peptide (ANP), urodilatin, and sodium excretion occurred during the first days of Phase III. Catecholamines were unchanged. A dramatic increase (tenfold) in urinary excretion of growth hormone occurred during all of Phase III and at the beginning of Phase IV. These findings are similar to those found in man during isolation inactivity and during confinement stress.

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Section: Blood Analysesmentioning

confidence: 99%

Hormonal response to restraint in rhesus monkeys

Gauquelin‐Koch

Blanquie

Viso

et al. 1996

J of Medical Primatology

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Comparison of a 4-day confinement and head-down tilt on endocrine response and cardiovascular variability in humans

Sigaudo

Fortrat

Maillet

et al. 1996

Europ. J. Appl. Physiol.

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The aim of this study was to determine the effects of a 4-day head-down tilt (HDT; -6 degrees) and 4-day confinement on several indicators that might reflect a state of cardiovascular deconditioning on eight male subjects. Measurements were made of endocrine responses, heart rate variability and spontaneous baroreflex response (SBR) slope before, during and after each intervention. Plasma volume decreased by 10 percent after the 4-day HDT. The concentration of active renin was increased and that of urinary atrial natriuretic peptide decreased during the 4-day experiment in both groups. Plasma arginine vasopressin concentration decreased significantly only after 4-day confinement. After the 4-day HDT, one of the spectrum analysis parameters was statistically changed: the parasympathetic indicator decreased significantly (P <0.05) whereas the sympathetic indicator and the total power spectrum were unaltered. After 4-day confinement spectrum analysis parameters were not statistically altered. A significant decrease of SBR (P <0.05) was noticed only after the 4-day HDT. These data would suggest that exposure to a 4-day HDT was sufficient to induce a cardiovascular deconditioning which may have been induced by confinement and inactivity.

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Implication de l'urodilatine dans les modifications hydro-électrolytiques induites chez l'homme par un décubitus à - 6°

Cited by 2 publications

References 6 publications

Hormonal response to restraint in rhesus monkeys

Hormonal response to restraint in rhesus monkeys

Comparison of a 4-day confinement and head-down tilt on endocrine response and cardiovascular variability in humans

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