Morais, Ana Heloneida de AraújoLuz, Anna Beatriz Santana2018-08-092018-08-092018-05-14LUZ, Anna Beatriz Santana. Indução de processo inflamatório com dieta de alto índice glicêmico e carga glicêmica em adipócitos e epitélio intestinal de ratos Wistar. 2018. 63f. Dissertação (Mestrado em Nutrição) - Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, 2018.https://repositorio.ufrn.br/jspui/handle/123456789/25716Experimental diets similar to the dietary pattern of modern society have been used in research to induce metabolic and body changes in animals. This study investigated the inflammatory effect of a pellet-diet with high glycemic index and load (HGLI) on the histological organization of adipocytes, intestinal epithelium and fat in liver and pancreas in Wistar rats. Two groups of adult animals (n = 5, every) received for 17 weeks: (1) HGLI Diet or (2) Standard Diet (Labina®). Microscopic analysis was performed with a diagnostic reading of the slides and an emphasis on the histological organization of visceral adipose tissue and the jejunum, as well as the investigation of the presence of adipocytes in the liver and pancreas. In addition, the investigation of volume density, total volume and cross-sectional area of adipocytes present in the visceral adipose tissue was performed. And the calculation of the adiposity index was obtained considering as total visceral fat the sum of the perirenal, retroperitoneal and epididymal adipose tissue compartments. For gene expression, RT-qPCR was performed on the following genes: TNF-α (LOC103694, Rn01525859_g1) and GAPDH (Rn01775763_g1). Immunohistochemistry was performed using the rabbit polyclonal primary antibody: anti-TNF-α (1: 100). The intensity of TNF-α was measured semi-quantitatively and automatically. The images were scored according to a note, which consisted of the following variation: negative (0), low positive (+1), positive (+2) and high positive (+3). Serum was used for TNF-α. The HGLI diet induced hypertrophy of adipocytes with adipocyte volume density equal to 97.0%, cross-sectional area equivalent to 1387 µm² and a total volume of 6.97 cm³ an elevation of 8%, 25%, and 58%, respectively. Furthermore, the HGLI diet increased liver and pancreatic fat deposition, caused intestinal villi disorganization and increased TNF-α gene expression (p = 0.014) with a positive immunostaining (+2) in visceral adipose tissue and high plasma TNF-α in comparison to standard diet. The HGLI diet induced inflammation in adipocytes and intestinal epithelium of Wistar rats, dysfunctions are commonly caused by pellet-diets with high fat or fructose-rich beverages.Acesso AbertoAdiposidadeAlimentação animalSacarose na dietaTNF-αmasterThesisCNPQ::CIENCIAS DA SAUDE::NUTRICAO