PMID- 22215535 OWN - NLM STAT- MEDLINE DCOM- 20120514 LR - 20230131 IS - 1521-6551 (Electronic) IS - 1521-6543 (Linking) VI - 64 IP - 2 DP - 2012 Feb TI - Association of nonalcoholic fatty liver disease with a single nucleotide polymorphism on the gene encoding leptin receptor. PG - 180-6 LID - 10.1002/iub.597 [doi] AB - Leptin (Lep), a 16-kDa polypeptide hormone, exerts its action through the leptin receptor (LepRb), a member of the class I cytokine receptor family. Both leptin and LepRb probably have been implicated in pathogenesis of nonalcoholic fatty liver disease (NAFLD). This study was designed to assess the role of soluble leptin and LepRb in NAFLD and to investigate whether leptin receptor gene (LepR) single nucleotide polymorphism (SNP; ID rs6700896) influences NAFLD complicated with or without type 2 diabetes mellitus (T2DM). Blood samples from 90 obese NAFLD cases and 30 lean controls of matched age and sex were recruited in the study. Among the NAFLD patients, 32 were T2DM. Plasma leptin and LepRb levels were measured by enzyme linked immunoassay (ELISA). Lipids profile, glucose metabolic parameters, and insulin concentration were measured for all participants. Body mass index (BMI) and insulin resistance (IR) were calculated as well. Genotyping was done using SNP (rs6700986) for LepR gene. Significant difference was reported between NAFLD with or without T2DM and control regarding biochemical markers and LepR genotype and allele frequencies. Mutant homozygous and heterozygous LepR genotype and mutant allele were significantly higher in mild-severe steatosis and in NAFLD with T2DM when compared with mild steatosis and those without T2DM. Frequencies of mutant LepR polymorphism were significantly associated with IR increment. Elevated leptin level seems to be a feature of steatosis, and it appears to increase as hepatocyte steatosis develops. Moreover, polymorphism of LepR gene contributes to the onset of NAFLD by regulating lipid metabolism and affecting insulin sensitivity. CI - Copyright (c) 2011 Wiley Periodicals, Inc. FAU - Swellam, Menha AU - Swellam M AD - Genetic Engineering and Biotechnology Research Division, Department of Biochemistry, National Research Center, Dokki, Giza, Egypt. menha_m_swellam@hotmail.com FAU - Hamdy, Nadia AU - Hamdy N LA - eng PT - Journal Article DEP - 20120103 PL - England TA - IUBMB Life JT - IUBMB life JID - 100888706 RN - 0 (Protein Isoforms) RN - 0 (Receptors, Leptin) SB - IM EIN - IUBMB Life. 2023 Feb;75(2):181. PMID: 36719049 MH - Case-Control Studies MH - Fatty Liver/*genetics MH - Female MH - Gene Frequency MH - Genetic Association Studies MH - Genotype MH - Humans MH - Logistic Models MH - Male MH - Middle Aged MH - Multivariate Analysis MH - Non-alcoholic Fatty Liver Disease MH - *Polymorphism, Single Nucleotide MH - Protein Isoforms/genetics MH - Receptors, Leptin/*genetics EDAT- 2012/01/05 06:00 MHDA- 2012/05/15 06:00 CRDT- 2012/01/05 06:00 PHST- 2011/08/12 00:00 [received] PHST- 2011/09/29 00:00 [accepted] PHST- 2012/01/05 06:00 [entrez] PHST- 2012/01/05 06:00 [pubmed] PHST- 2012/05/15 06:00 [medline] AID - 10.1002/iub.597 [doi] PST - ppublish SO - IUBMB Life. 2012 Feb;64(2):180-6. doi: 10.1002/iub.597. Epub 2012 Jan 3.