INTRODUCTION The concentration of noradrenalin and corticosterone as the two nociception modulators change after fasting or stress situation. The aim of present study was to investigate the effect of food deprivation on formalin-induced nociceptive behaviours and plasma levels of noradrenalin and corticosterone in rats. METHODS Food was withdrawn 12, 24 and 48 h prior to performing the formal...

Over the past two decades, the demand for charitable food assistance has steadily grown, and a massive ad hoc system of food banks has become established in Canada. To assess the food insecurity and nutritional vulnerability of one subgroup of food bank users, interviews were conducted with a sample of 153 women in families using emergency food relief programs in Metropolitan Toronto. Ninety pe...

BACKGROUND Daily feeding and locomotion are interrelated behaviours. The time spent in feeding and rate of food intake depends on food availability. In low food condition, the birds would show intense movement (locomotion) for a longer time throughout the day however during abundant food supply they may chose higher activity and food intake in the morning and evening only. In the present study ...

KOOLHAAS, J. M., F. MORA AND A. G. PHILLIPS.Effects o f food and water deprivation on self.stimulation o f the medial and sulcal prefrontal cortex and caudate putamen in the rat. PHYSIOL. BEHAV. 18(2) 329-331, 1977. Self-stimulation rates from electrodes, implanted in the terminal areas of the mesocortical and nigrostriatal dopaminergic systems, were measured during food or water deprivation. A...

Hypothalamic neuropeptide Y (NPY) activity is believed to play an important role in the response to food deprivation in adult rats. Little is known, however, about the role of the hypothalamic NPY system in the control of food intake in the preweanling rat. To address this issue, we examined the effect of deprivation on arcuate nucleus preproNPY expression in lean Zucker rat pups, using in situ...

Proteins containing the G protein regulator (GPR) domain bind the major neural G protein Gα(o) in vitro. However, the biological functions of GPR proteins in neurons remain undefined, and based on the in vitro activities of GPR proteins it is unclear whether these proteins activate or inhibit G protein signaling in vivo. We found that the conserved GPR domain protein AGS-3 activates Gα(o) signa...

Food deprivation has been found to stimulate cell proliferation in the gastric mucosa of suckling rats, whereas the weanling period has been reported to be unresponsive in terms of proliferative activity. In the present study we analyze regional differences in the effect of milk or food deprivation on cell proliferation of the epithelia of the esophagus and of five segments of small intestine i...

This study was carried out to investigate the pattern of neuronal activations that occur in the obese fa/fa Zucker rat during food deprivation. The functional activation of neurons was estimated in lean and obese Zucker rats either fed ad libitum or food-deprived for 3, 6, 12, and 24 hours by assessing the expression of the immediate early gene c-fos. To identify the neurons instigating the act...