Ghrelin and leptin pulse discharge in fed and fasted rats.

Abstract:

:Ghrelin stimulates and leptin inhibits appetite by modulating neuropeptide Y (NPY) signaling in the hypothalamus. Analysis of plasma ghrelin and leptin by sensitive radioimmunoassays showed that the two peripheral hormones are secreted in pulsatile fashion in rats consuming ad libitum rat chow. Fasting augmented all parameters of ghrelin pulsatile secretion and diminished leptin secretion by selectively attenuating the pulse amplitude; concomitantly it produced synchrony in ghrelin and leptin pulse discharge. These studies imply that a synchronous leptin restraint and ghrelin stimulus on NPYergic signaling may underlie robust appetitive drive.

journal_name

Endocrinology

journal_title

Endocrinology

authors

Bagnasco M,Kalra PS,Kalra SP

doi

10.1210/endo.143.2.8743

subject

Has Abstract

pub_date

2002-02-01 00:00:00

pages

726-9

issue

2

eissn

0013-7227

issn

1945-7170

journal_volume

143

pub_type

杂志文章