TY - JOUR ID - 240923 TI - Caffeic acid protects mice pancreatic islets from oxidative stress induced by multi-walled carbon nanotubes (MWCNTs) JO - Veterinary Research Forum JA - VRF LA - en SN - 2008-8140 AU - Ahangarpour, Akram AU - Alboghobeish, Soheila AU - Oroojan, Ali Akbar AU - Dehghani, Mohammad Amin AD - Diabetes Research Center, Health Research Institute, Department of Physiology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran AD - Student Research Committee, Department of Pharmacology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran AD - Student Research Committee, Department of Physiology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran AD - Student Research Committee, Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Y1 - 2021 PY - 2021 VL - 12 IS - 1 SP - 77 EP - 85 KW - Caffeic acid KW - Diabetes KW - Multi walled carbon nanotubes KW - Oxidative stress KW - Islet Insulin Secretion DO - 10.30466/vrf.2019.94666.2279 N2 - Increasing applications of carbon nanotubes (CNTs) indicate the necessity to examine their toxicity. According to previous studies, CNTs caused oxidative stress that impaired β-cell functions and reduced insulin secretion. Our previous study indicated that single-walled carbon nanotubes (SWCNTs) could induce oxidative stress in pancreatic islets. However, there is no study on the effects of multi-walled carbon nanotubes (MWCNTs) on islets and β-cells. Therefore, the present study aims to evaluate effects of MWCNTs on the oxidative stress of islets and the protective effects of caffeic acid (CA) as an antioxidant. The effects of MWCNTs and CA on islets were investigated using MTT assay, reactive oxygen species (ROS), malondialdehyde (MDA), activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), the content of glutathione (GSH) and mitochondrial membrane potential (MMP) and insulin secretion measurements. The lower viability of islet cells was dose-dependent due to the exposure to MWCNTs according to the MTT assay. Further studies revealed that MWCNTs decreased insulin secretion and MMP, induced ROS creation, increased the MDA level, and decreased activities of SOD, GSH-Px, CAT, and content of GSH. Furthermore, the pretreatment of islets with CA returned the changes. These findings indicated that MWCNTs might induce the oxidative stress of pancreatic islets occurring diabetes and protective CA effects that were mediated by the augmentation of the antioxidant defense system of islets. Our research suggested the necessity of conducting further studies on effects of MWCNTs and CA on the diabetes. UR - https://vrf.iranjournals.ir/article_240923.html L1 - https://vrf.iranjournals.ir/article_240923_ebd137cbf5cc81db33618e3ec658a877.pdf ER -