Muscle damage induced by experimental hypoglycemia

doi:10.1016/S0026-0495(98)90072-5

Metabolism

Volume 47, Issue 12, December 1998, Pages 1472-1476

https://doi.org/10.1016/S0026-0495(98)90072-5 Get rights and content

Abstract

To determine organ damage due to hypoglycemia, we studied the effects of insulin dose and hypoglycemia duration on serum enzyme activity in rabbits. Thirty rabbits were randomly divided into five groups according to hypoglycemia duration and insulin dose: A₂, hypoglycemia for 30 minutes with 2 U/kg insulin; A₁₀, hypoglycemia for 30 minutes with 10 U/kg insulin; B₂, hypoglycemia for 60 minutes with 2 U/kg insulin; B₁₀, hypoglycemia for 60 minutes with 10 U/kg insulin; and C, no hypoglycemia with 10 U/kg insulin and 50% glucose. Insulin-induced hypoglycemia was reversed by intravenous injection of glucose. Alterations in serum enzyme activity and creatine kinase (CK) isoenzyme distribution were determined before and after insulin injection. Serum CK activity increased significantly in all hypoglycemic groups compared with preinjection values, and tended to remain high for 24 hours in both groups A₁₀ and B₁₀. Serum activity of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and lactate dehydrogenase (LDH) increased only in group B₁₀. In addition, the level of band 4 of serum CK isoenzymes, which exists predominantly in skeletal muscle and myocardium, increased significantly in group B₁₀. These results suggest that the increase in both serum enzyme and CK band 4 isoenzyme activities during hypoglycemia is primarily due to damage in muscle rather than liver, and that the hypoglycemia duration and insulin dosage may influence the extent of organ damage.

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View full text

Muscle damage induced by experimental hypoglycemia

Abstract

Lancet

Lancet

Clin Chim Acta

Clin Chim Acta

Liver enzyme abnormalities after insulin induced hypoglycemic coma

BMJ

A rise in the plasma activities of hepatic enzymes is not a common consequence of hypoglycemia

Diabet Med

Liver function tests after hypoglycemia in insulin-dependent diabetic patients

Practical Diabetes

Plasma hepatic glutathione S-transferase concentrations after insulin-induced hypoglycemia in normal subjects and diabetic patients

Diabet Med

Plasma enzymic changes in insulin-induced hypoglycemia in experimental rabbits

Tohoku J Exp Med

Studies on CK isoenzyme analysis

Jpn J Clin Pathol

Creatine kinase

Jpn J Med Technol

Hypoglycemia in the Diabetes Control and Complications Trial

Diabetes