PMID: 870722Mar 1, 1977

Pathogenesis of spontaneous hypertension as a model for essential hypertension

Japanese Circulation Journal
Y Yamori


Hypertension in spontaneously hypertensive rats (SHR) develops initially without any obvious organic lesions, and mainly with hemodynamic alteration due to increased peripheral vascular resistance. It is then followed later by various cardiovascular complications such as stroke. These facts indicate that this spontaneous hypertension is very similar to essential hypertension in man. Studies on the pathogenic mechanisms of spontaneous hypertension up to the present have revealed the following points. (1) This hypertension is genetically transmitted to the offspring in an additive mode by a relatively small number of major genes; (2) Environmental factors such as stress and salt-loading accelerate the hypertension; (3) Parabiosis between SHR and normotensive rats offered no positive evidence indicating the involvement of any strong humoral factors; (4) Assays on adrenal and thyroid hormones have suggested that this hypertension is not a simple endocrine hypertension; (5) The destruction of the central nervous system or sympathectomy on blood pressure or peripheral vascular resistance, as well as the recording of spontaneous sympathetic discharge, etc. have indicated the positive involvement of the autonomic nervous system in the ...Continue Reading


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