Albumin synthesis and bone collagen formation in human immunodeficiency virus-positive subjects: Differential effects of growth hormone administration

Margaret A. Mcnurlan, Peter J. Garlick, Robert A. Frost, Kim A. Decristofaro, Charles H. Lang, Roy T. Steigbigel, Jack Fuhrer, Marie Gelato

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Loss of lean tissue often accompanies human immunodeficiency virus (HIV) infection. Exogenous human recombinant GH (hrGH) has been shown to be beneficial in reversing this wasting. However, catabolic effects of hrGH on muscle protein metabolism have also been reported. Therefore, the responsiveness of other GH-sensitive tissues, including bone formation and albumin synthesis, has been examined. Anabolic activity in bone, from serum levels of carboxy-terminal propeptide of type I collagen, was stimulated by 2 weeks of hrGH in controls (56 ± 15%, P = 0.002), patients with asymptomatic HIV (24 ± 10%, not significant), patients with AIDS (47 ± 7%, P < 0.001), and patients with AIDS and >10% weight loss (21 ± 12%, P = 0.02). Albumin synthesis, determined from the incorporation of L-[2H5]phenylalanine, was increased in response to hrGH in controls (23 ± 7%,P < 0.05), HIV+ subjects (39 ± 16%,P < 0.05), and patients with AIDS (25 ± 7%, P < 0.01). Patients with AIDS and weight loss, however, did not increase albumin synthesis (-0.6 ± 12%) in response to hrGH. The results indicate variable anabolic responses to hrGH. Bone collagen synthesis remained sensitive to hrGH, whereas, the anabolic action of hrGH on the synthesis of albumin diminished with severity of disease. However unlike muscle protein synthesis, albumin synthesis was not depressed below basal levels by hrGH.

Original languageEnglish (US)
Pages (from-to)3050-3055
Number of pages6
JournalJournal of Clinical Endocrinology and Metabolism
Volume83
Issue number9
DOIs
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical

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