The food responses of Drosophila larvae offer an excellent opportunity to study the genetic and neural regulation of feeding behavior. Compared with fed larvae, hungry larvae are more likely to display aggressive foraging, rapid food intake, compensatory feeding, and stress-resistant food procurement. Behavioral assays have been developed to quantitatively assess particular aspects of the hunge...

In natural environments where food abundance and quality can change drastically over time, animals must continuously alter their food acquisition strategies. Although genetic variation contributes to this plasticity, the specific genes involved and their interactions with the environment are poorly understood. Here we report that natural variation in the Drosophila gene, foraging (for), which e...

OBJECTIVES Responses to food insecurity in Canada have been dominated by community-based food initiatives, while little attention has been paid to potential policy directions to alleviate this problem. The purpose of this paper is to examine food security circumstances, participation in community food programs, and strategies employed in response to food shortages among a sample of low-income f...

Several lines of evidence suggest that brain histamine may be involved in the central control of food intake. The effect of histamine on feeding is mediated through three kinds of receptors (H1, H2, and H3). The present study was designed to investigate the effect of intracerebroventricular injection of histamine, promethazine (H1 antagonist) and ranitidine (H2 antagonist) on food intake of fre...

Using a large cross sectional English sample, we quantified the association between weight status in children aged 4-5 and 10-11 year, characteristics of the food environment, and area deprivation. We observed a positive association between the density of unhealthy food outlets in a neighbourhood and the prevalence of overweight and obesity in children. An association in the opposite direction ...

Studies in rats have shown that intermittent footshock stress reinstates drug seeking after prolonged drug-free periods. Recently, we found that another environmental stressor, acute 1 d food deprivation, potently reinstates heroin seeking in rats. Here we report that this effect of food deprivation can be blocked by leptin, a hormone involved in the regulation of energy balance and food intake...

Food deprivation inhibits ovulatory cycles and estrous behavior in Syrian hamsters. Lesions of the area postrema (AP) prevented the suppression of estrous behavior in food-deprived hamsters, but they did not prevent the suppression of estrous cyclicity or the increase in running-wheel activity caused by food deprivation. Food deprivation or treatment with pharmacological inhibitors of glycolysi...

Bi, Sheng, Benjamin M. Robinson, and Timothy H. Moran. Acute food deprivation and chronic food restriction differentially affect hypothalamic NPY mRNA expression. Am J Physiol Regul Integr Comp Physiol 285: R1030–R1036, 2003. First published July 3, 2003; 10.1152/ajpregu.00734.2002.— Although acute food deprivation and chronic food restriction both result in body weight loss, they produce diffe...

Several lines of evidence suggest that brain histamine may be involved in the central control of food intake. The effect of histamine on feeding is mediated through three kinds of receptors (H1, H2, and H3). The present study was designed to investigate the effect of intracerebroventricular injection of histamine, promethazine (H1 antagonist) and ranitidine (H2 antagonist) on food intake of fre...

introduction: ghrelin increases growth hormone secretion and food intake. growth hormone (gh), steroid hormones and opioids are involved in the regulation of food intake. so, they may have a role in the regulation of ghrelin secretion. we determined the effect of intravenous injections of progesterone, gh and morphine or co-administration of these hormones on ghrelin concentration and body weig...