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Titolo:
Suppression and recovery of estrous behavior in Syrian hamsters after changes in metabolic fuel availability
Autore:
Jones, JE; Lubbers, LS;
Indirizzi:
Univ Massachusetts, Ctr Neuroendocrine Studies, Amherst, MA 01003 USA UnivMassachusetts Amherst MA USA 01003 ne Studies, Amherst, MA 01003 USA
Titolo Testata:
AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY
fascicolo: 5, volume: 280, anno: 2001,
pagine: R1393 - R1398
SICI:
0363-6119(200105)280:5<R1393:SAROEB>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
PULSATILE LUTEINIZING-HORMONE; FEMALE RATS; GLUCOSE AVAILABILITY; FOOD-DEPRIVATION; MACACA-MULATTA; LEPTIN; SECRETION; REPRODUCTION; SYSTEM; RESTRICTION;
Keywords:
methyl palmoxirate; insulin; leptin; food deprivation; 2-deoxy-D-glucose;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Jones, JE Univ Massachusetts, Ctr Neuroendocrine Studies, Box 37720,Tobin Hall, Amherst, MA 01003 USA Univ Massachusetts Box 37720,Tobin Hall AmherstMA USA 01003 USA
Citazione:
J.E. Jones e L.S. Lubbers, "Suppression and recovery of estrous behavior in Syrian hamsters after changes in metabolic fuel availability", AM J P-REG, 280(5), 2001, pp. R1393-R1398

Abstract

A reduction in the availability of oxidizable metabolic fuels inhibits reproduction. Forty-eight hours of metabolic fuel deprivation inhibits estrousbehavior in ovariectomized, steroid-treated Syrian hamsters, but little isknown about the time course of this inhibition. Likewise, refeeding reverses deprivation-induced suppression, but the rate of recovery has not been examined. In two experiments we determined 1) the rate at which estrous behavior declines in hamsters treated with metabolic inhibitors and 2) how rapidly sexual receptivity is restored when hamsters are refed after a 48-h fast. We also measured circulating levels of leptin and insulin in an attempt to determine their relationship to the inhibition and restoration of estrous behavior. More than 24 h of metabolic inhibitor administration were required to inhibit lordosis, whereas only 6 h of refeeding were sufficient to restore the display of sexual receptivity to normal levels. Neither plasma insulin nor leptin levels paralleled the changes in estrous behavior. We concluded that 1) suppression of estrous behavior occurs more slowly than recovery after a fast and 2) changes in circulating leptin and insulin probablydo not have a critical role in these behavioral changes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 07:25:45