A quantitative PCR measurement of messenger RNA expression of IGF-I, IGF-II and IGFBP-5 in human skeletal muscle

Jill M.Coenen Schimke, Olle H. Ljungqvist, Gobinda Sarkar, Cheryl A. Conover, K. Sreekumaran Nair

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Insulin-like growth factor-I and -II (IGF-I and IGF-II) and their binding proteins are important components in growth promotion and tissue maintenance. We determined the presence of IGF-I, -II, and binding protein 5 (IGFBP-5) gene expression in human skeletal muscle and that mRNA abundance is not altered by nutrients and insulin. In the first protocol, (control) subjects were given water. In the second protocol, half of these subjects drank Polycose (carbohydrate) and the remaining subjects drank equal calories as a mixed meal. Quadriceps muscle biopsies were taken at 10 h. A semi- quantitative polymerase chain reaction was designed to measure gene expression. IGF-I, IGF-II and IGFBP-5 mRNA are present in adult human skeletal muscle; but no significant changes between meal groups were observed for IGF-I, IGF-II or IGFBP-5 mRNA levels, indicating that the expression of these genes are not altered acutely by nutrients and insulin.

Original languageEnglish (US)
Pages (from-to)179-186
Number of pages8
JournalGrowth Hormone and IGF Research
Volume9
Issue number3
DOIs
StatePublished - Jun 1999

Keywords

  • Binding proteins
  • Insulin-like growth factor
  • QPCR
  • mRNA

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology

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