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Lipolytic sensitivity to catecholamines in patients with human immunodeficiency virus infection
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DOI：10.1093/ajcn/66.3.633.png)
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Abstract
En 中文
Lipolysis is higher in patients with acquired immunodeficiency syndrome (AIDS) than in healthy control subjects. To evaluate whether this increase in lipolysis is related to increased beta-adrenergic sensitivity, we compared the lipolytic response to epinephrine (approximate to 15 ng.kg(-1).min(-1)) of six AIDS patients with that of six matched control subjects. Lipolysis was measured by infusion of [H-2(2)]glycerol and [H-2(2)]palmitate. The baseline rates of appearance of palmitate (2.06 +/- 0.21 compared with 1.45 +/- 0.07 mu mol.kg(-1).min(-1)) and glycerol (2.35 +/- 0.16 compared with 1.35 +/- 0.06 mu mol.kg(-1).min(-1)) were higher in AIDS patients (P < 0.05). The absolute increase in lipolysis, an indicator of the responsiveness to epinephrine, was not different between groups for the rate of appearance of palmitate (86 +/- 14 compared with 75 +/- 7 mu mol.L-1.min(-1)) or glycerol (79 +/- 13 compared with 59 +/- 6 mu mol.L-1.min(-1)). Plasma concentrations of epinephrine were not different between groups. Lipolysis was higher whereas the lipolytic response to epinephrine was normal in AIDS patients. increased lipolytic sensitivity to catecholamines is not the cause of increased lipolysis in AIDS.
Keywords:
lipolysis
epinephrine
adrenergic responsiveness
AIDS
acquired immunodeficiency syndrome
stable isotopes
human immunodeficiency virus
HIV
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