Saudi Journal of Gastroenterology
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ORIGINAL ARTICLE
Year : 2011  |  Volume : 17  |  Issue : 4  |  Page : 265-270

Genetic polymorphisms in non-alcoholic fatty liver disease in obese Egyptian children


1 Department of Pediatrics, Cairo University, Egypt
2 Department of Chemical Pathology, Cairo University, Egypt
3 Department of Pathology, Cairo University, Egypt

Correspondence Address:
Nehal M El-Koofy
Department of Pediatrices, Cairo University
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1319-3767.82582

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Background/Aim : Polymorphisms in the promoter of microsomal triglyceride transfer protein (MTP) lead to decreased MTP transcription, less export of triglyceride from hepatocytes, and greater intracellular triglyceride accumulation. Therefore, functional polymorphisms in MTP may be involved in determining susceptibility to nonalcoholic steatohepatitis (NASH). The aim of this study is to examine the effect of some genetic influences among a group of obese Egyptian children. Patients and Methods: A cross-sectional study was conducted on 76 overweight and obese children presenting to the Pediatric Endocrinology Unit, Cairo University Children's Hospital, Egypt, as well as on 20 healthy controls. Anthropometric measurements were taken for all the patients and they underwent clinical examination, ultrasonographic examination of the liver, and liver biopsy when appropriate. Liver functions, blood glucose, serum insulin, C-peptide, and lipid profile were assessed and HOMA-IR calculated. Blood samples from biopsy-proven NASH patients and controls were analyzed by polymerase chain reaction (PCR) and restriction fragment length polymorphism for the −493 G/T polymorphism in the promoter of MTP and the 1183 T/C polymorphism in the mitochondrial targeting sequence of manganese superoxide dismutase (MnSOD). Results : Eight had biopsy-proven simple steatosis and 7 had NASH. NASH patients had a much higher incidence of the MTP G/G genotype (P = 0.002, CI: 2.9-392) compared with the controls. NASH patients also had a 100% prevalence of the MnSOD T/T genotype. Conclusion: Certain genotypes in MTP and MnSOD are significantly more prevalent among obese children with NASH and may be responsible for such a phenotype.


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