The aim of the thesis is to analyze the relationship of polymorphisms Ala54Thr FABP2 (protein binding long chain fatty acids in the enterocytes of the small intestine), Gln27Glu B2AR (lipolytic receptor in white adipose tissue) and A-3826G UCP1 (uncoupling protein in the inner membrane of mitochondria in brown adipose tissue) to pursued antropometric and biochemical markers and judge their impact on the success of reducing therapy on children. Association of observed polymorphisms with obesity has already been proven in other studies, the results are inconsistent and most studies have dealt with adults. The study includes of 335 individuals (216 girls and 119 boys) who completed a reduction stay in the Children's hospital of Dr. Filip in Poděbrady. The subjects were studied for anthropometric and biochemical markers at the beginning and at the end of reduction stay. Genetic analysis of polymorphisms were performed with use of PCR-RFLP. Girls Thr/Thr in polymorphism Ala54Thr FABP2 were showing greater thickness of skin fold on abdomen (p=0,009) and higher fat percentage in body composition (p=0,023). Significantly greater reductionof both these markers have been demonstrated (p=0.008, p=0.040). For boys the relationship was observed of homozygote Ala/Ala in a lower weight reduction (p=0,040). In...

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