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Titolo:
CHANGES IN THE BAROREFLEX DURING PREGNANCY IN CONSCIOUS DOGS - HEART-RATE AND HORMONAL RESPONSES
Autore:
BROOKS VL; KEIL LC;
Indirizzi:
OREGON HLTH SCI UNIV,DEPT PHYSIOL,3181 SW JACKSON PK RD PORTLAND OR 97201 NASA,AMES RES CTR MOFFETT FIELD CA 94035
Titolo Testata:
Endocrinology
fascicolo: 5, volume: 135, anno: 1994,
pagine: 1894 - 1901
SICI:
0013-7227(1994)135:5<1894:CITBDP>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
ATRIAL-NATRIURETIC-PEPTIDE; RENIN-ANGIOTENSIN SYSTEM; FEMALE RATS; BARORECEPTOR DENERVATION; ARTERIAL BARORECEPTORS; VASOPRESSIN SECRETION; PLASMA VASOPRESSIN; CORTISOL RESPONSES; STEROID-HORMONES; ACTH;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
56
Recensione:
Indirizzi per estratti:
Citazione:
V.L. Brooks e L.C. Keil, "CHANGES IN THE BAROREFLEX DURING PREGNANCY IN CONSCIOUS DOGS - HEART-RATE AND HORMONAL RESPONSES", Endocrinology, 135(5), 1994, pp. 1894-1901

Abstract

This study was performed to test the hypothesis that reflex increasesin heart rate, PRA, and plasma concentrations of vasopressin, angiotensin-II, ACTH, and cortisol are reduced during pregnancy. The hypothesis was tested by measuring, in pregnant and nonpregnant conscious dogs, changes in arterial and atrial pressures, heart rate, and plasma hormone concentrations during 30-min infusions of three doses of nitroprusside (1, 2, and 4 mu g/kg.min). Between-group differences were determined by comparing the relationships between arterial or atrial pressure and plasma hormone concentrations. Hypotension-induced increases in heart rate and plasma levels of vasopressin, ACTH, and cortisol were blunted when the dogs were pregnant. In contrast, reflex increases in PRA and angiotensin-IJ were increased. These results indicate that the activity of the baroreceptor reflex is altered during pregnancy in dogs.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/11/20 alle ore 22:51:30