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Titolo:
CHRONIC IMMOBILIZATION STRESS REDUCES SODIUM-INTAKE AND RENAL EXCRETION IN RATS
Autore:
BENSI N; BERTUZZI M; ARMARIO A; GAUNA HF;
Indirizzi:
UNIV NACL RIO CUARTO,DEPT MOL BIOL RA-5800 RIO CUARTO CORDOBA ARGENTINA UNIV NACL RIO CUARTO,DEPT MOL BIOL RA-5800 RIO CUARTO CORDOBA ARGENTINA UNIV AUTONOMA BARCELONA,FAC CIENCIAS,DEPT BIOL CELULAR & FISIOL,UNIDAD FISIOL ANIM E-08193 BARCELONA SPAIN
Titolo Testata:
Physiology & behavior
fascicolo: 6, volume: 62, anno: 1997,
pagine: 1391 - 1396
SICI:
0031-9384(1997)62:6<1391:CISRSA>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
BORDERLINE HYPERTENSIVE RAT; BEHAVIORAL STRESS; CONSCIOUS DOGS; NERVE ACTIVITY; VASOPRESSIN; RESPONSES; HORMONES; OXYTOCIN; STIMULI;
Keywords:
SODIUM INTAKE; NATRIURESIS; KALIURESIS; DIURESIS; IMMOBILIZATION STRESS; ADAPTATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
N. Bensi et al., "CHRONIC IMMOBILIZATION STRESS REDUCES SODIUM-INTAKE AND RENAL EXCRETION IN RATS", Physiology & behavior, 62(6), 1997, pp. 1391-1396

Abstract

The influence of chronic exposure to immobilization (IMO) on sodium appetite as well as sodium and potassium renal excretion in adult male Wistar rats was studied. The animals were individually housed and all variables under observation were measured in metabolic cages the first, seventh, and thirteenth days once the experiment had started. Half of the rats had access to water, and the remainder of the rats had access to both water and saline solution (1.5% NaCl). IMO reduced the intake of saline solution. Renal water, sodium, and potassium excretion inthose IMO rats having access to saline were lower than in control rats. The effects of IMO were very similar during all observation days; therefore no evidence of adaptation to repented stress was found. The present data indicate the following: (i) IMO stress reduced sodium appetite, probably as a secondary effect to the deficit in sodium renal excretion; (ii) IMO caused antidiuresis and antikaliuresis, only in those rats taking saline solution; (iii) no adaptation to repeated IMO stress was found in any of the tested variables. The reduction of sodium appetite observed in stressed rats might be a homeostatic mechanism tomaintain sodium balance after impairment of renal sodium excretion caused by stress. (C) 1997 Elsevier Science Inc.

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Documento generato il 01/12/20 alle ore 10:52:22