Central administration of alpha-melanocyte-stimulating hormone changes lipid metabolism in chicks.

Alpha-melanocyte-stimulating hormone (MSH) is well known as an anorexigenic peptide in the brain of mammals. In addition to this, brain alpha-MSH enhances heat production (HP), indicating that the peptide acts as a catabolic factor in the regulation of energy metabolism. The anorexigenic effect of alpha-MSH is also observed in chicks (Gallus gallus), but no information has been available for its effect on HP.

Intracerebroventricular injection of glucagon-like peptide-1 changes lipid metabolism in chicks.

Glucagon-like peptide-1 (GLP-1), derived from proglucagon, is thought to act as a negative regulator of energy homeostasis in mammals, since intracerebroventricular (ICV) injection of GLP-1 inhibits feeding behavior and enhances energy expenditure. The anorexigenic effect of GLP-1 is also observed in chicks, but whether brain GLP-1 enhances energy expenditure has not been investigated. The aim of the present study was to clarify the effect of ICV injection of GLP-1 on energy expenditure as well as metabolic changes in chicks.

Central administration of vasoactive intestinal peptide and pituitary adenylate cyclase-activating polypeptide differentially regulates energy metabolism in chicks.

Vasoactive intestinal peptide (VIP) and pituitary adenylate cyclase-activating polypeptide (PACAP) are the members of the glucagon superfamily and bind to common receptors while PACAP also acts via the PACAP-specific receptor, PAC1. The aim of the present study was to investigate whether intracerebroventricular (i.c.

(-)-Epigallocatechin gallate attenuates acute stress responses through GABAergic system in the brain.

(-)-Epigallocatechin gallate (EGCG), a flavonoid, is the principal catechin found in green tea and is distributed in the brain after tea consumption. The aim of the present study was to investigate the effects of EGCG in the chick brain under an acute stressful condition and to clarify the mechanism by which EGCG attenuates stress behavior with special reference to gamma-aminobutyric acid (GABA). Intracerebroventricular (i.