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    Central obesity and hyperglicemia affect the increase of plasma concentrations of the DPP-4

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    Orientador: Bruno Geloneze NetoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências MédicasResumo: Objetivo: O principal objetivo deste estudo foi avaliar as relações das concentrações enzimáticas da DPP-4 com adiposidade e o grau de tolerância à glicose. Métodos: Foram avaliados 227 indivíduos (Mulheres: 64,8% Homens: 35,2%) de ambos os sexos, 73 indivíduos com DM2, com idade entre 18-80 anos e com IMC entre 18,5 a 47 kg/m². Os indivíduos foram divididos em 4 grupos: Não Obesos Normoglicêmicos (nOb-NG), Não Obesos Hiperglicêmico (nOb-HG), Obesos Normoglicêmicos (Ob-NG) e Obesos Hiperglicêmicos ( Ob-HG). Foram considerados obesos indivíduos com IMC>30 e hiperglicêmicos HbA1c >6,0. Resultados: Observamos um aumento na concentração da DPP-4 no grupo de Ob-HG (p>0,05), comparado à outros três grupos (nOb-NG, nOb-HG e Ob-NG); houve correlação positiva entre a concentração da DPP-4 e HbA1c (p>0,05), nos grupos separados em: Não Obesos, Obesos, Normoglicêmicos e hiperglicêmicos; entre as mulheres, a concentração de DPP-4 teve correlação negativa (p 30 and hyperglycemic A1c> 6,0. Results: We reported an increased enzymatic concentration of DPP-4 in Ob-HG group (p> 0.05) compared to the other three groups (NG-NOB, NOB and Ob-HG-NG); a positive correlation was found between concentration of DPP -4 and HbA1c (p> 0.05) in groups: not obese, obese, normoglycemic and hyperglycemic; among women, the concentration of DPP-4 had a negative correlation (p <0.05) and hip and thigh circumferences; positive correlation (p <0.05) with neck-to-thigh and waist-to-thigh ratio; among men, the concentration of DPP-4 had a negative correlation with lean mass. Conclusions: obese patients with hyperglycemia have higher concentrations of DPP-4 compared with normoglycemic lean or obese individuals. There is an association between the centripetal distribution of body fat and increasing concentrations of DPP-4, whose mechanisms remain unclear. Our work provides pathophysiological bases for treatment of T2DM based on inhibition of DPP-4 confirming findings of randomized clinical trials and clinical practice. In fact, incretin-based therapies, in particular the inhibition of DPP-4, has proven effective in the treatment of T2DMMestradoClinica MedicaMestre em Clinica Medic
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