Browsing by Subject "HPA axis"
Now showing items 1-10 of 11
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Activation of HPA Axis and Remodeling of Body Chemical Composition in Response to an Intense and Exhaustive Exercise in C57BL/6 Mice
(Acad Sciences Czech Republic, Inst Physiology, 2014-01-01)Several deleterious effects may occur when intense and exhaustive exercise (IE) is not well-planned. This study aimed to investigate the effects of a short duration IE on body chemical composition and hypothalamic-pituit ...
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Brief and long maternal separations in a lupus-prone strain: Dissociation decrease corticosterone secretion from disease-related parameters
(Elsevier B.V., 2008-03-01)Neonatal manipulations are known to alter the activity of the immune system and the hypothalamus-pituitary-adrenal (HPA) axis. This study was performed in order to examine whether brief and long maternal separations (BMS ...
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Differential effects of acute cold and footshock on the sleep of rats
(Elsevier B.V., 2000-04-07)Several studies have shown that 1 h of immobilisation stress during the rat's active period results in rebound of paradoxical (PS) and slow wave sleep (SWS). Since the effects of stress on behaviour and physiological ...
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Effects of brief and long maternal separations on the HPA axis activity and the performance of rats on context and tone fear conditioning
(Elsevier B.V., 2007-12-03)Previous studies show that early life events result in neurobehavioural alterations that may be either beneficial or detrimental to the stress response. Given the close relationship between corticosterone secretion and ...
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Hair Cortisol and Stressful Life Events Retrospective Assessment in Crack Cocaine Users
(Informa Healthcare, 2012-11-01)Background: Some evidence suggests that altered hypothalamic-pituitary-adrenal (HPA) axis functioning in cocaine users might play a role in the pathophysiology of substance abuse. This study aimed to investigate the ...
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Impact of Prolonged Physical Training on the Pituitary Glucocorticoid Sensitivity Determined by Very Low Dose Intravenous Dexamethasone Suppression Test
(Georg Thieme Verlag Kg, 2008-10-01)The activity of the hypothalamic-pituitary-adrenal axis is usually modulated by several stress factors, including exercise. Different responses are induced by physical training according to duration and intensity of exercise. ...
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Lead exposure is related to hypercortisolemic profiles and allostatic load in Brazilian older adults
(Academic Press Inc Elsevier Science, 2017)Lead levels (Pb) have been linked to both hyper-and hypo-reactivity of hypothalamic-pituitary-adrenal axis (HPA) axis to acute stress in animals and humans. Similarly, allostatic load (AL), the 'wear and tear' of chronic ...
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Long lasting alteration in REM sleep of female rats submitted to long maternal separation
(Elsevier B.V., 2008-02-27)Early adverse experiences represent risk factors for the development of anxiety and mood disorders. Maternal separation can induce biobehavioral alterations in male rodents similar to those seen in depressed humans, such ...
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Palatable solutions during paradoxical sleep deprivation: Reduction of hypothalamic-pituitary-adrenal axis activity and lack of effect on energy imbalance
(Blackwell Publishing Ltd, 2003-09-01)Paradoxical sleep deprivation (PSD) induces increased energy expenditure in rats, insofar as rats eat more but loose weight throughout the deprivation period. in the present study, rats were offered water, saccharin or ...
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Paradoxical sleep deprivation activates hypothalamic nuclei that regulate food intake and stress response
(Elsevier B.V., 2009-09-01)A large body of evidence has shown that prolonged paradoxical sleep deprivation (PSD) results in hypothalamic-pituitary-adrenal (HPA) axis activation, and in loss of body weight despite an apparent increase of food intake, ...
