当前位置： SCI文献检索 > GENERAL AND COMPARATIVE ENDOCRINOLOGY期刊下所有文献 > Postprandial effects on appetite-related neuropeptide expression in the brain of Atlantic salmon, Salmo salar.

Postprandial effects on appetite-related neuropeptide expression in the brain of Atlantic salmon, Salmo salar.

Abstract：

:Following feeding of a single meal to Atlantic salmon, the temporal changes in the brain mRNA expression of neuropeptide y (npy), cocaine-amphetamine regulated transcript (cart), peptide yy (pyy), two isoforms of agouti-related protein (agrp), two isoforms of cholecystokinin (cck), and four isoforms of proopiomelanocortin (pomc) were assessed by q-PCR. In the course of 24h post-feeding (hpf), several of the brain neuropeptides displayed changes in mRNA expression compared to an unfed control group, indicating that food intake and processing affect the regulation of expression of these genes in Atlantic salmon. Expression of cart, cck-l, pomc-a1 and pomc-b all increased within 3h of feeding, while most of the feed was still in the stomach, suggesting that these neuropeptides play central anorexigenic roles similar to those described in higher vertebrates, including determining meal intervals. On the other hand, the npy and agrp isoforms which have been described as playing orexigenic roles in mammals, showed an opposite response in salmon and both were elevated in the first 3h after feeding. The different isoforms of cck, agrp and pomc had different mRNA expression patterns, which indicate specific roles related to feeding regulation. The minimal effect of feeding and digestion on pyy expression in the brain indicates that PYY plays a minor role in the central control of short-term food intake in Atlantic salmon.

journal_name

Gen Comp Endocrinol

journal_title

General and comparative endocrinology

authors

Valen R,Jordal AE,Murashita K,Rønnestad I

doi

10.1016/j.ygcen.2011.02.027

subject

Has Abstract

pub_date

2011-05-01 00:00:00

pages

359-66

issue

3

eissn

0016-6480

issn

1095-6840

pii

S0016-6480(11)00077-3

journal_volume

171

pub_type

杂志文章

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