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  • Title: Vascular lesions and angiotensin in malignant hypertension in the absence of vasopressin.
    Author: Woods RL, Abrahams JM, Kincaid-Smith P, Johnston CI.
    Journal: Clin Exp Pharmacol Physiol; 1982; 9(3):297-301. PubMed ID: 6754178.
    Abstract:
    1. Vasopressin deficient homozygous Brattleboro rats develop malignant renal hypertension following complete aortic-ligature between the renal arteries. 2. This form of hypertension is associated with high plasma renin activity (PRA) and plasma angiotensin II (AII) levels and a high incidence of the specific vascular lesions of fibrinoid necrosis in both Brattleboro and Long-Evans rats. 3. The levels of PRA and AII in the malignant hypertensive Brattleboro rats were not different from those in Long-Evans rats with malignant hypertension. 4. No compensation by the renin-angiotensin system therefore could be demonstrated for the lack of vasopressin in malignant hypertensive Brattleboro rats. 5. Vasopressin does not appear to be essential as a pressor hormone in the development of malignant renal hypertension and fibrinoid can occur in the absence of vasopressin.
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