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Title: Studies of the pathogenesis of arteriosclerosis induced in rats by intrarenal injection of a carcinogen, nickel subsulfide

Journal Article · · Annals of Clinical and Laboratory Science; ()
OSTI ID:6037192

Widespread arteriosclerotic lesions were detected by histological examinations of rats killed at seven or nine weeks after an intrarenal (ir) injection of nickel subsulfide (Ni3S2, 5 mg per rat). Arteriosclerotic plaques were readily visualized by administering hematoporphyrin derivative (HPD) iv to rats at 24 hours before sacrifice. At necropsy, the major arteries were inspected under ultraviolet light, revealing patches of intense HPD-fluorescence in the arterial endothelium of Ni3S2-treated rats, but not in control rats. Consistent with previous reports, the Ni3S2-treated rats developed pronounced erythrocytosis; blood hematocrit values averaged 70 +/- 4% at seven weeks after ir injection of Ni3S2 (P<0.001 vs corresponding value of 49 +/- 2% in vehicle controls). At seven weeks, blood platelet counts averaged 17% lower and serum glucose concentrations averaged 23% lower in Ni3S2-treated rats than in controls; serum lipids, lipoproteins, non-protein nitrogen constituents, electrolytes, proteins, and enzymes were not significantly affected. These findings exclude hypertension and hyperlipidemia as pathogenic factors in Ni3S2-induced arteriosclerosis. 57 references, 1 figure, 6 tables.

Research Organization:
Univ. of Connecticut School of Medicine, Farmington
OSTI ID:
6037192
Journal Information:
Annals of Clinical and Laboratory Science; (), Vol. 14:5
Country of Publication:
United States
Language:
English

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