PMID- 23545843 OWN - NLM STAT- MEDLINE DCOM- 20131105 LR - 20181217 IS - 1791-3004 (Electronic) IS - 1791-2997 (Linking) VI - 7 IP - 5 DP - 2013 May TI - Protective effects of Lagerstroemia speciosa on 3-morpholinosydnonimine (SIN-1)-induced oxidative stress in HIT-T15 pancreatic beta cells. PG - 1607-12 LID - 10.3892/mmr.2013.1396 [doi] AB - Reactive oxygen species (ROS)-induced pancreatic beta cell death affects insulin secretion and is important in the pathogenesis of diabetes. Lagerstroemia speciosa, a traditional folk medicine, has been used for t he prevention and treatment of diabetes. However, whether Lagerstroemia speciosa has a cytoprotective effect on pancreatic beta cells remains to be elucidated. The present study aimed to investigate the cytoprotective effects of hot water extracts from Lagerstroemia speciosa leaves (LWE) on 3-morpholinosydnonimine (SIN-1)-induced oxidative damage in Syrian hamster pancreatic insulinoma HIT-T15 cells. The HIT-T15 cells were first treated with SIN-1 (50 microM) for 24 h and then co-incubated with LWE for 48 h. SIN-1 significantly decreased HIT-T15 cell viability (P<0.05); however, LWE did not exert a significant cytotoxic effect and increased the viability of HIT-T15 cells in a dose‑dependent manner. To further investigate the protective effects of LWE on SIN-1‑induced oxidative stress in HIT-T15 cells, the cellular levels of ROS, lipid peroxidation and endogenous antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-px), were determined. LWE decreased the intracellular levels of ROS and lipid peroxidation, and increased the activities of antioxidant enzymes. These results suggest that LWE has a cytoprotective effect against SIN-1‑induced oxidative stress in HIT-T15 cells through the inhibition of lipid peroxidation, a decrease in ROS levels and an increase in antioxidant enzyme activity. In addition, LWE increased insulin secretion in SIN-1-treated HIT-T15 cells. Our results suggested that LWE were effective in the treatment of diabetes. Further studies are required to study the anti-diabetic molecular mechanism in a cell model. FAU - Song, Jia-Le AU - Song JL AD - Department of Food Science and Nutrition, Pusan National University, Busan 609-735, Republic of Korea. FAU - Zhao, Xin AU - Zhao X FAU - Wang, Qiang AU - Wang Q FAU - Zhang, Ting AU - Zhang T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130326 PL - Greece TA - Mol Med Rep JT - Molecular medicine reports JID - 101475259 RN - 0 (Antioxidants) RN - 0 (Insulin) RN - 0 (Plant Extracts) RN - 0 (Protective Agents) RN - 0 (Reactive Oxygen Species) RN - 4Y8F71G49Q (Malondialdehyde) RN - 5O5U71P6VQ (linsidomine) RN - D46583G77X (Molsidomine) SB - IM MH - Animals MH - Antioxidants/metabolism MH - Cell Survival/drug effects MH - Cricetinae MH - Insulin/metabolism MH - Insulin Secretion MH - Insulin-Secreting Cells/*drug effects/metabolism/*pathology MH - Intracellular Space/drug effects/metabolism MH - Lagerstroemia/*chemistry MH - Lipid Peroxidation/drug effects MH - Malondialdehyde/metabolism MH - Mesocricetus MH - Molsidomine/analogs & derivatives MH - Oxidative Stress/*drug effects MH - Plant Extracts/*pharmacology MH - Plant Leaves/chemistry MH - Protective Agents/*pharmacology MH - Reactive Oxygen Species/metabolism EDAT- 2013/04/03 06:00 MHDA- 2013/11/06 06:00 CRDT- 2013/04/03 06:00 PHST- 2012/11/15 00:00 [received] PHST- 2013/03/19 00:00 [accepted] PHST- 2013/04/03 06:00 [entrez] PHST- 2013/04/03 06:00 [pubmed] PHST- 2013/11/06 06:00 [medline] AID - 10.3892/mmr.2013.1396 [doi] PST - ppublish SO - Mol Med Rep. 2013 May;7(5):1607-12. doi: 10.3892/mmr.2013.1396. Epub 2013 Mar 26.