Resistance of obese and non-obese, spontaneously hypertensive rats to alloxan-induced diabetes.

Abstract:

:Male, 5 months old, massively obese, spontaneously hypertensive rats (Obese/SHR) were given 10 mg alloxan/100 g b.w., s.c., to induce diabetes. Control Obese and non-obese/SHR were given saline. Insulin therapy was withheld. All of the animals were killed at 6 months of age. Alloxan caused a slight but statistically significant increase in blood pressure, pituitary and adrenal glandular hyperplasia, hyperlipidemia, hyperglycemia, and increased BUN levels. The giant sized islets of Langerhans in Obese/SHR showed only partial degranulation of the insulin-producing beta cells concomitant with residual but apparently adequate blood insulin levels, whereas the islets of non-obese/SHR exhibited virtually total beta cell degranulation and only trace amounts of blood insulin. The alloxanized, non-obese rats were severely emaciated; the alloxanized Obese/SHR maintained their obesity. Alloxan-treated, Obese and non-obese/SHR manifested gross and microscopic degenerative changes suggesting acceleration of the normal aging process. The genetically-programmed pathogenesis of diabetes, obesity, hypertension, and Cushingoid pathophysiology of Obese/SHR may be due to hyperadrenocorticism.

journal_name

Life Sci

journal_title

Life sciences

authors

Wexler BC,Mc Murtry JP

doi

10.1016/0024-3205(83)90666-5

subject

Has Abstract

pub_date

1983-09-12 00:00:00

pages

1097-103

issue

11

eissn

0024-3205

issn

1879-0631

pii

0024-3205(83)90666-5

journal_volume

33

pub_type

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