Effects of l-arginine on growth hormone and insulin-like growth factor 1

Hyun Seok Oh, Se Kwan Oh, Jum Seek Lee, Chunyan Wu, Sung-Joon Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

l-Arginine has been reported to promote cellular and organismal growth. In this study, the effects of l-arginine on the expression of growth hormone (GH) and insulin-like growth factor 1 (IGF-1), the two key growth factors, are investigated in cultured GH3 pituitary epithelium and HepG2 cells, respectively. l-Arginine significantly induced the gene expression of GH and IGF-1 in GH3 pituitary epithelium and HepG2 hepatocytes respectively, and reduced IGF binding protein-1 gene expression in HepG2 cells assessed via quantitative polymerase chain reaction analysis. l-Arginine also significantly induced GH and IGF-1 hormone secretion from GH3 and HepG2 cells, respectively. In addition, the multi-target ELISA analysis conducted revealed that phosphorylation of p-38 MAPK, MEK, and JNK were significantly increased in HepG2 cells, suggesting l-arginine-induced activation of the MAPK signaling pathway. These results suggest that l-arginine promotes the synthesis and secretion of GH and IGF-1 in vitro and induces the MAPK signaling cascade in cultured hepatocytes.

Original languageEnglish
Pages (from-to)1749-1754
Number of pages6
JournalFood Science and Biotechnology
Volume26
Issue number6
DOIs
Publication statusPublished - 2017 Dec 1

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Keywords

  • Growth hormone
  • Insulin-like growth factor 1
  • l-Arginine
  • Mitogen-activated protein kinase

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology

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