Enterostatin inhibition of dietary fat intake is dependent on CCK-A receptors.
Enterostatin inhibition of dietary fat intake is dependent on CCK-A receptors.
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肠抑素对膳食脂肪摄入的抑制依赖于 CCK-A 受体。
DOI:
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发表时间:
2003
期刊:
影响因子:
--
通讯作者:
D. York
中科院分区:
文献类型:
--
作者:
Ling Lin;S. R. Thomas;G. Kilroy;G. Schwartz;D. York
Enterostatin, a pentapeptide released from the exocrine pancreas and gastrointestinal tract, selectively inhibits fat intake through activation of an afferent vagal signaling pathway. This study investigated if the effects of enterostatin were mediated through a CCK-dependent pathway. The series of in vivo and in vitro experiments included studies of 1) the feeding effect of peripheral enterostatin on Otsuka Long Evans Tokushima Fatty (OLETF) rats lacking CCK-A receptors, 2) the effect of CCK-8S on the intake of a two-choice high-fat (HF)/low-fat (LF) diet, 3) the effects of peripheral or central injection of the CCK-A receptor antagonist lorglumide on the feeding inhibition induced by either central or peripheral enterostatin, and 4) the ability of enterostatin to displace CCK binding in a 3T3 cell line expressing CCK-A receptor gene and in rat brain sections. The results showed that OLTEF rats did not respond to enterostatin (300 microg/kg ip) in contrast to the 23% reduction in intake of HF diet in Long Evans Tokushima Otsuka (LETO) control rats. CCK (1 microg/kg ip) decreased the intake of the HF diet in a two-choice diet regime with a compensatory increase in intake of the LF diet. Peripheral injection of lorglumide (300 microg/kg) blocked the feeding inhibition induced by either near-celiac arterial or intracerebroventricular enterostatin, whereas intracerebroventricular lorglumide (5 nmol icv) only blocked the response to intracerebroventricular enterostatin but not to arterial enterostatin. Enterostatin did not bind on CCK-A receptors because neither enterostatin nor its analogs VPDPR and beta-casomorphin displaced [3H]L-364,718 from CCK-A receptors expressed in 3T3 cells or the binding of 125I-CCK-8S from rat brain sections. The data suggest that both the peripheral and central responses to enterostatin are mediated through or dependent on peripheral and central CCK-A receptors.
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DOI:
10.1152/ajpregu.2000.278.4.r882
发表时间:
2000-04-01
影响因子:
2.8
作者:
Matson, CA;Reid, DF;Ritter, RC
通讯作者:
Ritter, RC
DOI:
10.1002/j.1550-8528.1994.tb00101.x
发表时间:
1994
期刊:
Obesity research
影响因子:
--
作者:
Tian,Q;Nagase,H;York,DA;Bray,GA
通讯作者:
Bray,GA
DOI:
10.1152/ajpregu.1989.256.6.r1232
发表时间:
1989
期刊:
The American journal of physiology
影响因子:
--
作者:
Ritter,S;Taylor,JS
通讯作者:
Taylor,JS
DOI:
10.1152/ajpregu.2000.278.5.r1346
发表时间:
2000
期刊:
American journal of physiology. Regulatory, integrative and comparative physiology
影响因子:
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作者:
Lin,L;Bray,G;York,DA
通讯作者:
York,DA
DOI:
10.1042/bj2920787
发表时间:
1993
期刊:
The Biochemical journal
影响因子:
--
作者:
Okada,S;York,DA;Bray,GA
通讯作者:
Bray,GA