Increased uptake and phosphorylation of 2-deoxyglucose by skeletal muscles in endotoxin-treated rats

K. Meszaros, G. J. Bagby, C. H. Lang, J. J. Spitzer

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Glucose metabolism of respiratory and nonrespiratory muscles of different fiber composition was investigated in conscious rats. The accumulation of phosphorylated 2-deoxyglucose (2DGP) was increased in skeletal muscles by 56-102% and in diaphragm by 236% at 3 h after treatment with 100 μg/100 g endotoxin. The increase was still marked at 24 h, whereas it diminished at 48 h in the diaphragm, abdominal muscle, and white portion of the quadriceps. In the red portion of this muscle 2DGP accumulation was less than that in time-matched controls at 24 and 48 h. Whole gastrocnemius (mixed-fiber types) showed no changes after 24 h. The high 2DGP accumulation in brain remained stable. The retention of 2DGP in tissues, studied by sequential double labeling, did not change 3 h after endotoxin. The lumped constant was similar in the isolated epitrochlear muscles of endotoxemic and control rats. Whole-body glucose utilization (R(d)) was increased by 68% 3 h after endotoxin, but it was normal at 24 and 48 h. The increase of glucose utilization by the entire skeletal muscle mass was responsible for ~ 25% of the increase in R(d); therefore it appears that other tissues also contributed significantly to the endotoxin-induced alterations in carbohydrate metabolism.

Original languageEnglish (US)
Pages (from-to)E33-E39
JournalAmerican Journal of Physiology - Endocrinology and Metabolism
Issue number1 (16/1)
StatePublished - 1987

All Science Journal Classification (ASJC) codes

  • Endocrinology, Diabetes and Metabolism
  • Physiology
  • Physiology (medical)


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