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Int J Exp Pathol. 1991 Jun;72(3):319-27.

Acute alterations in the regulation of lipid metabolism after intravascular reexposure to a single bolus of homologous virus during influenza B infection in ferrets: possible model of epiphenomena associated with influenza.

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Department of Pediatrics, College of Medicine, University of Tennessee, Memphis 38163.


Metabolic responses occurring 24 h following the secondary haematogenous dissemination of influenza B virus during convalescence from infection were examined in the ferret as a possible model for epiphenomena which can occur following infection with influenza. Among the major changes found were a further rise in the mean fasting serum free fatty acid (FFA) level to three times the control mean value and a 50% drop in the mean serum triglyceride (TG) concentration after the intravascular administration of a single bolus of virus compared to levels found in uninfected or convalescent animals. In adipose tissue, hormone-sensitive and lipoprotein lipase activities were increased six and three-fold, respectively, over mean control values, probably accounting for the changes that were observed in serum lipid concentrations. In the liver, total carnitine palmitoyltransferase (CPT) activity was affected only slightly and the total lipid content of the liver remained unchanged. These findings indicate that 24 h after the intravascular dissemination of homologous virus in a single bolus during convalescence from influenza B infection, major distortions in the regulation of lipid metabolism occur in the ferret. Loss of the synchronous regulation of the two adipose tissue lipases is a significant consequence leading to the mobilization of a large amount of FFA during fasting from both adipose tissue and the circulating plasma TG stores.

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