Combination of cafeteria diet with intraperitoneally streptozotocin in rats. A type-2 diabetes model

• Autor(a) principal: Santos,Mirelly Marques Romeiro
• Data de Publicação: 2021
• Outros Autores: Cavalcante,Andressa Carolina Farias Pereira Subtil, Amaral,Luane Aparecida do, Souza,Gabriel Henrique Oliveira de, Santos,Bárbara Suzuki dos, Portugal,Luciane Candeloro, Bittencourt Junior,Felipe Franscisco, Troquez,Thiago, Rafacho,Bruna Paola Murino, Hiane,Priscila Aiko, Santos,Elisvânia Freitas dos
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Acta Cirúrgica Brasileira (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502021000700200
• topic: Liver; Hyperglycemia; Body Weight; Pancreas; Models; Animal

ABSTRACT Purpose To develop a model of induction of type-2 diabetes (DM2) by combining low doses of streptozotocin (STZ) and a cafeteria diet. Methods Forty male Wistar rats (200 g) were allocated into four groups: control (non-diabetic, n = 10); STZ 30 mg/kg (diabetic, n = 10); STZ 35 mg/kg (diabetic,n = 10); and STZ 40 mg/kg (diabetic, n = 10). DM2 was induced with a single intraperitoneal injection of STZ after four weeks of cafeteria diet in the three diabetic groups. All animals were evaluated as for anthropometric, and biochemical analyses, as well as liver, kidney and pancreas histological analyses. Results Lower weight gain, higher water intake, higher Lee index, hyperglycemia and modified total protein, urea, alpha-amylase, as well as insulin resistance, hepatic steatosis, pancreas, and kidney injury were observed in animals treated with 35 and 40 mg/kg of STZ. Conclusions The results show that the experimental model using cafeteria diet associated with 35 mg/kg of STZ is a low-cost model and efficient in order to develop DM2, confirmed by the presence of polydipsia, hyperglycemia, altered biochemical tests, insulin resistance and damages to the liver, pancreas and kidney, which is similar to the disease found in humans.