Stress and hypertension: studies in three experimental models
Rev. Hosp. Säo Paulo Esc. Paul. Med
;
2(1/2): 19-21, Mar.-Jun. 1990. tab
Article
in English
| LILACS
| ID: lil-188349
ABSTRACT
The effects of three models of stress upon blood pressure and central responsiveness to angiotensin II (AII) and noradrenaline (NA) were assessed in rats. Considering general parameters of stress efficacy, all models were effective to induce stress but hypertension only occurred in animals submitted to rapid eye movement sleep deprivation (REM-sd) and electric shock (ES). An increased central pressor effect of AII and NA was observed in these groups. On the other hand, restriction (R) did not increase blood pressure or central responsiveness to AII or NA. Instead of hypertension, R induced gastric ulcers and testis atrophy. Thus, hypertension occurs only in some models of stress and may be due to increased central responsiveness to AII and NA.
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Index:
LILACS (Americas)
Main subject:
Stress, Physiological
/
Heart Rate
/
Hypertension
Limits:
Animals
Language:
English
Journal:
Rev. Hosp. Säo Paulo Esc. Paul. Med
Journal subject:
Medicine
Year:
1990
Type:
Article
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