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Titolo:
RESTRAINT-INDUCED CHANGES IN SERUM LUTEINIZING-HORMONE, PROLACTIN, GROWTH-HORMONE AND CORTICOSTERONE LEVELS IN RATS - EFFECT OF SUPERIOR CERVICAL GANGLIONECTOMY
Autore:
MARTIN AI; LOPEZCALDERON A; TRESGUERRES JAF; GONZALEZQUIJANO MI; CARDINALI DP;
Indirizzi:
UNIV BUENOS AIRES,FAC MED,DEPT FISIOL,CC243 RA-1425 BUENOS AIRES DF ARGENTINA UNIV BUENOS AIRES,FAC MED,DEPT FISIOL RA-1425 BUENOS AIRES DF ARGENTINA UNIV COMPLUTENSE,FAC MED,DEPT FISIOL E-28040 MADRID SPAIN
Titolo Testata:
Neuroendocrinology
fascicolo: 2, volume: 61, anno: 1995,
pagine: 173 - 179
SICI:
0028-3835(1995)61:2<173:RCISLP>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
SYMPATHETIC-NERVE DEGENERATION; CATECHOLAMINE NEURON SYSTEMS; PITUITARY-THYROID AXIS; PARAVENTRICULAR NUCLEUS; ETHER STRESS; WALLERIAN DEGENERATION; IMMOBILIZATION STRESS; ESTROUS-CYCLE; RELEASE; HYPOTHALAMUS;
Keywords:
SUPERIOR CERVICAL GANGLION; STRESS; LUTEINIZING HORMONE; PROLACTIN; GROWTH HORMONE; ADRENAL STEROIDS; WALLERIAN DEGENERATION; DENERVATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
39
Recensione:
Indirizzi per estratti:
Citazione:
A.I. Martin et al., "RESTRAINT-INDUCED CHANGES IN SERUM LUTEINIZING-HORMONE, PROLACTIN, GROWTH-HORMONE AND CORTICOSTERONE LEVELS IN RATS - EFFECT OF SUPERIOR CERVICAL GANGLIONECTOMY", Neuroendocrinology, 61(2), 1995, pp. 173-179

Abstract

From about 10 to 36 h after superior cervical ganglionectomy (SCGx), peripheral sympathetic nerve terminals in the median eminence degenerate, nerve ending content is released, and a transient period of increased postsynaptic activity ensues. After this time, an irreversible, paralytic phase is established in the denervated territory. The present experiment was undertaken to examine, at single points during the wallerian degeneration phase (24 h after SCGx) and during the paralytic phase (10 days after denervation), the participation of peripheral sympathetic nerves in restraint-stress-induced changes of circulating luteinizing hormone (LH), prolactin (PRL), growth hormone (GH) and corticosterone levels. During the wallerian degeneration phase, serum LH did not augment after stress, as it did in sham-operated controls. In the paralytic phase, the poststress increases in LH attained similar valuesin sham-operated and SCGx rats. Immobilization stress augmented PRL levels to a similar extent in sham-operated and SCGx rats either 24 h or 10 days after surgery. During the wallerian degeneration phase, a decrease in serum GH levels was found in unrestrained rats. Immobilization stress decreased GH levels to 5-12% of unrestrained values in sham-operated and SCGx rats at both examination time points after surgery. Rats studied 24 h after SCGx exhibited significantly augmented serum corticosterone levels and failed to Show restraint-stress-induced stimulation of corticosterone release. In rats subjected to SCGx 10 days earlier, both basal and poststress levels of corticosterone did not differ from sham-operated controls. The results suggest that the activity of peripheral sympathetic nerve terminals may modulate the acute stress responses of LH and corticosterone, but not those of GH and PRL, in rats.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/10/20 alle ore 23:16:11