Adipose tissue production of hepatocyte growth factor contributes to elevated serum HGF in obesity

Lauren N. Bell, Jennifer L. Ward, Mikako Degawa-Yamauchi, Jason E. Bovenkerk, RoseMarie Jones, Brenda M. Cacucci, Christine E. Gupta, Carol Sheridan, Kevin Sheridan, Sudha S. Shankar, Helmut O. Steinberg, Keith L. March, Robert Considine

Research output: Contribution to journalArticle

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Abstract

Serum HGF is elevated in obese individuals. This study examined the contribution of excess adipose tissue to increased circulating HGF levels in obesity. Serum HGF was measured by ELISA before and after weight loss due to bariatric surgery or a 24-h fast. At 6.1 ± 0.1 mo following surgery, BMI (50.6 ± 1.6 vs. 35.1 ± 1.3 kg/m2; P < 0.0001) and serum HGF were significantly decreased (1,164 ± 116 vs. 529 ± 39 pg/ml, P < 0.001). A 24-h fast did not change serum HGF, but serum leptin was significantly reduced (67.7 ± 7.1 vs. 50.3 ± 8.3 ng/ml, P < 0.02). HGF secretion in vitro from adipocytes of obese (BMI 40.3 ± 2.8 kg/m2) subjects was significantly greater (80.9 ± 10.4 vs. 21.5 ± 4.0 pg/105 cells, P = 0.008) than release from adipocytes of lean (BMI 23.3 ± 1.4 kg/m2) subjects. HGF mRNA levels determined by real-time RT-PCR were not different in adipocytes from lean (BMI 24.0 ± 0.8 kg/m2) and obese (45.7 ± 3.0 kg/m 2) subjects, but serum HGF was significantly elevated in the obese individuals studied (787 ± 61 vs. 489 ± 49 pg/ml, P = 0.001). TNF-α (24 h treatment) significantly increased HGF release from subcutaneous adipocytes 23.6 ± 8.3% over control (P = 0.02). These data suggest that elevated serum HGF in obesity is in part attributable to excess adipose tissue and that this effect can be reversed by reducing adipose tissue mass through weight loss. Increased HGF secretion from adipocytes of obese subjects may be due to posttranscriptional events possibly related to adipocyte size and stimulation by elevated TNF-α in the adipose tissue of obese individuals.

Original languageEnglish
JournalAmerican Journal of Physiology - Endocrinology and Metabolism
Volume291
Issue number4
DOIs
StatePublished - 2006

Fingerprint

Hepatocyte Growth Factor
Adipose Tissue
Adipocytes
Obesity
Tissue
Serum
Surgery
Leptin
Weight Loss
Bariatric Surgery
Messenger RNA
Real-Time Polymerase Chain Reaction
Enzyme-Linked Immunosorbent Assay

Keywords

  • Adipocytes
  • Adiponectin
  • Hepatocyte growth factor
  • Leptin
  • Obesity
  • Tumor necrosis factor-α
  • Weight loss

ASJC Scopus subject areas

  • Physiology
  • Endocrinology
  • Biochemistry

Cite this

Adipose tissue production of hepatocyte growth factor contributes to elevated serum HGF in obesity. / Bell, Lauren N.; Ward, Jennifer L.; Degawa-Yamauchi, Mikako; Bovenkerk, Jason E.; Jones, RoseMarie; Cacucci, Brenda M.; Gupta, Christine E.; Sheridan, Carol; Sheridan, Kevin; Shankar, Sudha S.; Steinberg, Helmut O.; March, Keith L.; Considine, Robert.

In: American Journal of Physiology - Endocrinology and Metabolism, Vol. 291, No. 4, 2006.

Research output: Contribution to journalArticle

Bell, LN, Ward, JL, Degawa-Yamauchi, M, Bovenkerk, JE, Jones, R, Cacucci, BM, Gupta, CE, Sheridan, C, Sheridan, K, Shankar, SS, Steinberg, HO, March, KL & Considine, R 2006, 'Adipose tissue production of hepatocyte growth factor contributes to elevated serum HGF in obesity', American Journal of Physiology - Endocrinology and Metabolism, vol. 291, no. 4. https://doi.org/10.1152/ajpendo.00174.2006
Bell, Lauren N. ; Ward, Jennifer L. ; Degawa-Yamauchi, Mikako ; Bovenkerk, Jason E. ; Jones, RoseMarie ; Cacucci, Brenda M. ; Gupta, Christine E. ; Sheridan, Carol ; Sheridan, Kevin ; Shankar, Sudha S. ; Steinberg, Helmut O. ; March, Keith L. ; Considine, Robert. / Adipose tissue production of hepatocyte growth factor contributes to elevated serum HGF in obesity. In: American Journal of Physiology - Endocrinology and Metabolism. 2006 ; Vol. 291, No. 4.
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