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Updated: Jan 5, 2026

Characterization of Metabolic Status in Nonhuman Primates with the Intravenous Glucose Tolerance Test
Published on: November 13, 2016
[Rat metabolic parameters in multiple insulin hy- 44poglycemia]
Abstract:
Hypoglycemic coma was induced with 40 U of insulin per kg body weight. The animals experiencing 7 hypoglycemic comas at 2-day intervals and killed during the last coma were found to have elevated serum levels of free fatty acids, urea, and uric acid; hepatic glycogen levels remained normal. In the liver, the activities of aspartate aminotransferase (EC 2.6.1.1), alanine aminotransferase (EC 2.6.1.2), glutaminase (EC 3.5.1.2), glutamate dehydrogenase (EC 1.4.1.3), succinate dehydrogenase (EC 1.3.99.1), and lactate dehydrogenase (EC 1.1.1.27) were enhanced and the rate of lactate generation increased when glucose and glycogen were used as substrates. Such changes were absent in initially healthy animals during the first hypoglycemic coma. They are indicative of increases in the catabolism of amino acids and in the activation of gluconeogenesls in the rats experiencing insulin hypoglycemia many times and they are associated with the stimulation of the contramsular apparatus in hypoglycemia.
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