Male rats were given streptozotocin (100 mg/kg) by intraperitoneal injection. Groups of control and streptozotocin-treated animals were sacrificed at daily intervals for 4 days after injection. Over this period, treated rats lost weight continuously while control animals progressively gained weight. Within 24 h of treatment blood glucose and plasma free fatty acids were raised to levels which were sustained for the remainder of the experiment. After 48 h blood ketone bodies, plasma cholesterol and triglycerides were maximally raised and liver glycogen and blood lactate similarly lowered. The percentage composition of major fatty acids in liver lipids was unchanged until 4 days after treatment when there were significant increases in the proportion of oleate and linoleate and reductions in stearate and arachidonate. The data confirm that streptozotocin induces a rapid and sustained diabetes. It is suggested that metabolic experiments, in streptozotocin-diabetic rats, may be performed 48 h after treatment.

Keywords:
Blood glucose, Blood lactate, Blood ketone bodies, Plasma triglycerides, Plasma cholesterol, Plasma-free fatty acids, Liver glycogen, Liver fatty acid composition
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© 1975 S. Karger AG, Basel
1975
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