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Stroke, Vol 21, 1621-1624, Copyright © 1990 by American Heart Association

ARTICLES

Progressing cerebral infarction in relation to plasma glucose in gerbils

J Vazquez-Cruz, JL Marti-Vilalta, I Ferrer, A Perez-Gallofre and J Folch
Department of Neurology, Hospital de la Santa Creu i Sant Pau (Barcelona), Universitat Autonoma de Barcelona Medical School, Spain.

We studied neurologic morbidity and its evolution during hyperglycemia induced immediately after permanent unilateral common carotid artery ligation in Mongolian gerbils. A total of 60 animals were divided into five groups: one experiencing severe hyperglycemia for 1 hour after the onset of ischemia (brief hyperglycemia group, n = 13), a normoglycemic control group for the brief hyperglycemia group (n = 12), a group with severe hyperglycemia for 4 hours after the onset of ischemia (prolonged hyperglycemia group, n = 11), a normoglycemic control group for the prolonged hyperglycemia group (n = 13), and a hyperosmolar normoglycemic control group for the prolonged hyperglycemia group (n = 11). Neurologic morbidity and mortality were higher in the two hyperglycemic groups than in the three normoglycemic control groups. The neurologic deficit progressed according to the duration of severe hyperglycemia. In the three normoglycemic control groups neurologic status stabilized 120 minutes after the onset of ischemia, in the brief hyperglycemia group stabilization occurred at 210 minutes, and in the prolonged hyperglycemia group neurologic deficit progressed for approximately 360 minutes, coinciding with the death of all but one gerbil, in which the neurologic deficit remained stable until death 23 hours after ischemia. We suggest that hyperglycemia is another cause of progressing cerebral infarction.

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