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Titolo:
Effects of food deprivation and refeeding on neuropeptide Y (NPY) mRNA levels in goldfish
Autore:
Narnaware, YK; Peter, RE;
Indirizzi:
Univ Alberta, Dept Sci Biol, Edmonton, AB T6G 2E9, Canada Univ Alberta Edmonton AB Canada T6G 2E9 iol, Edmonton, AB T6G 2E9, Canada
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
fascicolo: 2-3, volume: 129, anno: 2001,
pagine: 633 - 637
SICI:
1096-4959(200106)129:2-3<633:EOFDAR>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENE-EXPRESSION; BRAIN;
Keywords:
appetite; brain; food intake; food deprivation; growth hormone; gene expression; goldfish; neuropeptide Y; refeeding; starvation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Peter, RE Univ Alberta, Dept Sci Biol, Edmonton, AB T6G 2E9, Canada Univ Alberta Edmonton AB Canada T6G 2E9 ton, AB T6G 2E9, Canada
Citazione:
Y.K. Narnaware e R.E. Peter, "Effects of food deprivation and refeeding on neuropeptide Y (NPY) mRNA levels in goldfish", COMP BIOC B, 129(2-3), 2001, pp. 633-637

Abstract

In mammals, NPY is a key factor in the regulation of feeding behavior. In the present study, the effects of refeeding for 1-3 h in 72-75-h food deprived (FD) goldfish on the levels of NPY mRNA in telencephalon-preoptic (TEL-POA), hypothalamus (HYP) and optic tectum-thalamus (OT-THAL) were examined,using Northern blot analysis. Goldfish FD for 72 h exhibited a significantincrease in NPY mRNA levels in all brain regions. At 1 h after 72-h FD (73-h FD), NPY mRNA was significantly increased in TEL-POA and OT-THAL, but remained the same as 72-h FD fish in HYP. At 3 h after 72-h FD (75 h), all brain regions exhibited a significant increase in NPY mRNA levels. However, subsequent refeeding for 1-3 h rapidly and completely reversed the effects of FD in all brain regions, reaching fed levels within 1-3 h of refeeding. Serum GH levels were highest in 72-h FD fish, but decreased significantly over 1-3 h after 72-h FD; whereas, refeeding reversed the increase in serum GH levels only at 3 h after refeeding. Taken together, these results furthersupport that NPY is a physiological brain transducer involved in the regulation of daily appetite and feeding in goldfish. (C) 2001 Elsevier Science Inc. All rights reserved.

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Documento generato il 30/05/20 alle ore 15:09:24