Author:
Gomes Rodrigo Mello,de Paulo Luis Fernando,Bonato Panizzon Cynthia Priscilla do Nascimento,Neves Camila Quaglio,Cordeiro Bruna Colombo,Zanoni Jacqueline Nelisis,Francisco Flávio Andrade,Piovan Silvano,de Freitas Mathias Paulo Cezar,Longhini Renata,de Mello João Carlos Palazzo,de Oliveira Júlio Cezar,Pedrino Gustavo Rodrigues,da Silva Reis Angela Adamski,Cecchini Alessandra Lourenço,Marçal Natali Maria Raquel
Abstract
Background/Aims: Trichilia catigua A. Juss., known as “catuaba” in Brazil, has been popularly used as a tonic for fatigue, impotence and memory deficits. Previously, our group demonstrated that the ethyl-acetate fraction (EAF) of T. catigua has antioxidant and anti-inflammatory effects. The present study evaluated the anti-diabetic activity of EAF in type 1 diabetic rats. Methods: Male Wistar rats were divided into four groups (N: non-diabetic group, D: type 1 diabetic group, NC: non-diabetic + EAF group and DC: type 1 diabetic + EAF group). The latter two groups were treated with 200 mg/kg EAF. Type 1 diabetes was induced by intravenous streptozotocin (STZ) injection (35 mg/kg). Starting two days after STZ injection, EAF was administered daily by gavage for 8 weeks. Results: EAF attenuated body mass loss and reduced food and water intake. EAF improved hyperglycaemia and other biochemical parameters, such as alkaline phosphatase (ALP), alanine aminotransferase (ALT) and aspartate aminotransferase (AST). Furthermore, the number of pancreatic β-cells and the size of the islets had increased by β-cell proliferation in the DC group. EAF promoted reduction in kidney tissue damage in STZ-induced diabetic rats by reduction of renal fibrosis. Conclusion: The present study showed that EAF improves glucose homeostasis and endocrine pancreas morphology and inhibits the development of diabetic nephropathy in STZ-induced diabetic rats.
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