Alloxan in vivo does not only exert deleterious effects on pancreatic B cells.
The aim of the experiment was to investigate the mechanism of harmful alloxan action in vivo. 75 mg/kg b.w. of this diabetogenic agent were administered to fasting rats. Two minutes later the animals were decapitated. It was observed that alloxan caused a distinct rise in blood insulin and glucose levels with a concomitant drop of free fatty acids. The amount of sulfhydryl groups in the liver of alloxan-treated rats was decreased and glutathione peroxidase activity was substantially higher. These results indicate that some changes observed in alloxan-induced diabetes can not only be the consequence of B cells damage by alloxan but may also be the result of its direct influence on other tissues. It was also observed that glucose given 20 min before alloxan injection only partially protected against the deleterious effects of alloxan.
Department of Animal Physiology and Biochemistry, University of Agriculture, Poznan, Poland.
T
T
Szkudelski
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K
Kandulska
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M
Okulicz
D000496:Alloxan / Q000494:pharmacology*; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D005215:Fasting; D005230:Fatty Acids, Nonesterified / Q000097:blood; D005979:Glutathione Peroxidase / Q000378:metabolism; D007328:Insulin / Q000097:blood; D007515:Islets of Langerhans / Q000187:drug effects*; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D013438:Sulfhydryl Compounds / Q000378:metabolism
D001786:Blood Glucose; D005230:Fatty Acids, Nonesterified; D007328:Insulin; D013438:Sulfhydryl Compounds; D000496:Alloxan; D005979:Glutathione Peroxidase