Fucoidan from Acaudina molpadioides protects pancreatic islet against cell apoptosis via inhibition of inflammation in type 2 diabetic mice

Jinhui Wang; Shiwei Hu; Jingfeng Wang; Shijie Li; Wei Jiang

doi:10.1007/s10068-016-0042-6

Fucoidan from Acaudina molpadioides protects pancreatic islet against cell apoptosis via inhibition of inflammation in type 2 diabetic mice

Food Sci Biotechnol. 2016 Feb 29;25(1):293-300. doi: 10.1007/s10068-016-0042-6. eCollection 2016.

Authors

Jinhui Wang¹, Shiwei Hu^{1

2}, Jingfeng Wang², Shijie Li¹, Wei Jiang^{1

2}

Affiliations

¹ 1Innovation Application Institute, Zhejiang Ocean University, Zhoushan, 316022 China.
² 2College of Food Science and Engineering, Ocean University of China, Qingdao, 266003 China.

Abstract

Inflammation induces pancreatic islet cell apoptosis. Effects of fucoidan from Acaudina molpadioides (Am-FUC) on inhibition of pancreatic islet cell apoptosis and inflammation in type 2 diabetic mice were investigated. Am-FUC repaired pancreatic islet cells, decreased serum C-reactive protein (CRP), macrophage inflammatory protein 1 (MIP-1), interleukin 1β (IL-1β), IL-6, and tumor necrosis factor-α (TNF-α) levels, and increased the IL-10 level. Am-FUC also reduced TNF-α, CRP, MIP-1, IL-1β, and IL-6 mRNA expressions, and increased IL-10 mRNA expression in epididymal adipose tissues. Am-FUC reduced Bid, Bax, cytochrome c, caspase 9, and caspase 3 mRNA expressions, and increased Bcl-2 and Bcl-xL mRNA expressions. Am-FUC down-regulated t-Bid, Bax, cytochrome c, and caspase 9 activities, cleaved caspase 3 proteins, and up-regulated Bcl-2 and Bcl-xL proteins. Thus, an Am-FUCblocked mitochondrial pathway was the suppression mechanism in pancreatic islet cell apoptosis via regulation of inflammatory cytokines providing dietary intervention in type 2 diabetes and inflammation-induced pancreatic islet apoptosis.

Keywords: Acaudina molpadioides; apoptosis; fucoidan; inflammatory cytokine; pancreatic islet.