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Titolo:
EFFECTS OF UNILATERAL CASTRATION ON THE HYPOTHALAMIC STRUCTURES INVOLVED IN THE REGULATION OF GONADAL-FUNCTION IN RAT
Autore:
LEPOSAVIC G; MICIC M; MILENKOVIC L; CIRIC O;
Indirizzi:
IMMUNOL RES CTR,458 VOJVODE STEPE YU-11221 BELGRADE YUGOSLAVIA INST MED RES BELGRADE YUGOSLAVIA BORIS KIDRIC INST NUCL SCI YU-11001 BELGRADE YUGOSLAVIA
Titolo Testata:
Archives internationales de physiologie, de biochimie et de biophysique
fascicolo: 1, volume: 101, anno: 1993,
pagine: 27 - 33
SICI:
0778-3124(1993)101:1<27:EOUCOT>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMPENSATORY OVARIAN HYPERTROPHY; FEMALE RAT; SECRETION; NUCLEUS; ORCHIDECTOMY; INNERVATION; ESTROGEN; VAGOTOMY; ANDROGEN; AMYGDALA;
Keywords:
UNILATERAL CASTRATION; HYPOTHALAMUS; GONADES; RAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
G. Leposavic et al., "EFFECTS OF UNILATERAL CASTRATION ON THE HYPOTHALAMIC STRUCTURES INVOLVED IN THE REGULATION OF GONADAL-FUNCTION IN RAT", ARCH I PHYS, 101(1), 1993, pp. 27-33

Abstract

This study was undertaken to evaluate the effects of unilateral gonadectomy on the hypothalamic structures involved in the regulation of gonadal function in adult rats of both sexes. Unilateral gonadectomy wasperformed; 15 days later stereological parameters of cell activity ofboth the halves of hypothalamic preoptico - suprachiamatic area (PO-SC) and arcuate nucleus (NA) were analyzed. Under the same experimentalconditions the activities of the FSH and LH immunoreactive cells wereanalyzed separately in both the halves of the adenohypophysis. The results showed that in the rats of both sexes subjected to unilateral gonadectomy the mean diameter of cell nuclei of the contralateral half of PO-SC was significantly greater than that of the ipsilateral half. However, in the control intact or bilaterally gonadectomized rats, there were no significant differences in the values of the same parameter between two halves of PO-SC. On the other hand, neither in the unilaterally gonadectomized nor in the controls, the values of the mean diameter of NA cell nuclei differed significantly between the two halves ofthis structure. The FSH and LH pituitary cells behaved like NA cells. Therefore, since in the experimental animals compensatory function was developed, and since nervous signaling was different from the sides of the removed and intact gland, the present results suggest involvement of a pure nervous mechanism, besides hormonal control, in the regulation of the compensatory gonadal function. This mechanism seems to befunctional in the rats of both sexes. These results also indicate that PO-SC is the anatomical structure involved in this regulation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 06:36:43