Previous laboratory studies of disinhibited eating in response to stress have had varied outcomes. Since recent research implies that disinhibited eating might be observed when using the Thre-Factor Eating Questionnaire restraint (TFEQ-R) measure when scores on the TFEQ disinhibition (TFEQ-D) scale were also used, the present study investigated the disinhibitory effects of stress on eating in w...

Life stress frequently occurs within the context of homeostatic challenge, requiring integration of physiological and psychological need into appropriate hormonal, cardiovascular, and behavioral responses. To test neural mechanisms underlying stress integration within the context of homeostatic adversity, we evaluated the impact of a pronounced physiological (hypernatremia) challenge on hypotha...

BACKGROUND/AIMS This study was designed to investigate the possibility that the enhanced nociceptive responsiveness associated with canabonoid type 1 receptors (CB1Rs) and identify its role in mediating visceral hypersensitivity induced by chronic restraint stress. METHODS Rats were exposed to daily partial restraint stress or sham partial restraint stress with intraperitoneal injection of th...

BACKGROUND Stress of various origins suppresses male reproductive functions through releasing stress hormones. Antioxidant like ascorbic acid (AA) and alpha tocopherol (AT) have been thought to protect the body against stress induced damage. Whether, these antioxidants confer protection against the stress induced increased levels of corticosterone and nor-epinephrine, and decreased testosterone...

Circadian rhythms in the Syrian hamster can be markedly phase shifted by 3 h of wheel running or arousal stimulation during their usual daily rest period ("subjective day"). Continuous wheel running is predictive but not necessary for phase shifts of this "nonphotic" type; hamsters aroused by gentle handling without running can also show maximal shifts. By contrast, physical restraint, a standa...

We investigated the role of central endothelin-A (ET(A)) receptors and nitric oxide (NO) in regulating arterial pressure during restraint stress and recovery from stress. Rats received intracerebroventricular (icv) injections of the ET(A) receptor antagonist BQ123 (24 microg/kg) and were then subjected to two restraint-rest cycles (1 h of restraint and 1 h of rest/cycle). Although mean arterial...

It is well known that maternal stress during the gestation and lactation periods induces abnormal behavior in the offspring and causes a lowering of the offspring's body weight. Various causes of maternal stress during the lactation period, relating to, for example, maternal nutritional status and reduced maternal care, have been considered. However, little is known about the effects on milk of...

In gonadectomized (GDX) animals replaced with subcutaneous steroid implants supplying physiological levels of testosterone (T; 1-10 ng/ml), the magnitude of adrenocorticotropic hormone (ACTH) and corticosterone (B) responses to restraint was negatively correlated with the level of T replacement, reflecting the inhibitory influence of T on hypothalamic-pituitary-adrenal (HPA) responses to stress...

Body temperature and pituitary-adrenal responses to restraint (15 min or 4 h) stress were evaluated in nondependent and morphine-dependent rats. Male Sprague-Dawley rats were treated twice daily with increasing doses of morphine (10-100 mg/kg, s.c.) for 16 days. Transmitters were implanted in the peritoneal cavity to monitor body temperature and blood was collected for hormone assays. Acute wit...