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Investigation into the role of the hormone sensitive lipase -60C>G promoter variant in morbid obesity.

AbstractBACKGROUND: Hormone sensitive lipase (HSL) plays a central role in free fatty acid homeostasis in adipose tissue and in pancreatic beta-cells, where it contributes to the control of insulin secretion by generating long-chain fatty acids. AIM: We examined the frequency and association of the functional HSL promoter variant, -60C>G, in a German cohort of morbidly obese women (N=239) and men (N=55) and compared the frequency to a cohort of 199 blood donors, recruited from the same region. RESULTS: The rare allele frequency of -60C>G, in the obese individuals was significantly lower 0.031 (95% CI 0.02, 0.04), than that in the blood donors 0.061 (95% CI 0.04, 0.08) p=0.05. The association of the HSL -60C>G with lipid and glucose parameters was examined in the obese women (there were too few men for comparative analysis). In the obese women, those heterozygous for the -60G had significantly higher glucose levels compared to CC women, 142.71 (+/-16.23) mg/dl vs. 110.34 (+/-1.79) mg/dl, respectively (p=0.0001). There was no statistically significant difference in other parameters. CONCLUSION: This study confirms a role for HSL in glucose homeostasis and the reduced frequency of the low expressing -60G promoter variant in obese individuals, together with existing published data, suggests that this allele might be protective against obesity.
AuthorsPhilippa J Talmud, Jutta Palmen, Anna M Wolf, Ulrike Beisiegel (Affiliation: Centre for Cardiovascular Genetics, British Heart Foundation Laboratories, Department of Medicine, The Rayne Institute, Royal Free and University College Medical School, London WC1E 6JF, UK. p.talmud at ucl.ac.uk)
JournalNutrition, metabolism, and cardiovascular diseases : NMCD (Nutr Metab Cardiovasc Dis) Vol. 15 Issue 1 Pg. 31-5 (Feb 2005) ISSN: 0939-4753 Germany
PMID15871848 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Blood Glucose
  • Leptin
  • Insulin
  • Lipase
Topics
  • Adult
  • Blood Glucose (metabolism)
  • Cohort Studies
  • Female
  • Gene Frequency
  • Genetic Variation
  • Humans
  • Insulin (metabolism)
  • Leptin (blood)
  • Lipase (blood, genetics)
  • Lipid Metabolism
  • Male
  • Middle Aged
  • Obesity, Morbid (blood, genetics, metabolism)
  • Promoter Regions, Genetic (genetics)