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- W2498973669 abstract "Pancreatic β-cell death or dysfunction mediated by oxidative stress underlies the development and progression of diabetes mellitus (DM). In this study, we evaluated the effect of lentinan (LNT), an active ingredient purified from the bodies of Lentinus edodes, on pancreatic β-cell apoptosis and dysfunction caused by streptozotocin (STZ) and the possible mechanisms implicated. The rat insulinoma cell line INS-1 were pre-treated with the indicated concentration of LNT for 30 min. and then incubated for 24 hrs with or without 0.5 mM STZ. We found that STZ treatment causes apoptosis of INS-1 cells by enhancement of intracellular reactive oxygen species (ROS) accumulation, inducible nitric oxide synthase (iNOS) expression and nitric oxide release and activation of the c-jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK) signalling pathways. However, LNT significantly increased cell viability and effectively attenuated STZ-induced ROS production, iNOS expression and nitric oxide release and the activation of JNK and p38 MAPK in a dose-dependent manner in vitro. Moreover, LNT dose-dependently prevented STZ-induced inhibition of insulin synthesis by blocking the activation of nuclear factor kappa beta and increasing the level of Pdx-1 in INS-1 cells. Together these findings suggest that LNT could protect against pancreatic β-cell apoptosis and dysfunction caused by STZ and therefore may be a potential pharmacological agent for preventing pancreatic β-cell damage caused by oxidative stress associated with diabetes." @default.
- W2498973669 created "2016-08-23" @default.
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- W2498973669 date "2016-07-22" @default.
- W2498973669 modified "2023-10-11" @default.
- W2498973669 title "Lentinan protects pancreatic β cells from <scp>STZ</scp> ‐induced damage" @default.
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- W2498973669 doi "https://doi.org/10.1111/jcmm.12865" @default.
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