PMID- 23414442 OWN - NLM STAT- MEDLINE DCOM- 20131022 LR - 20231213 IS - 1742-2094 (Electronic) IS - 1742-2094 (Linking) VI - 10 DP - 2013 Feb 17 TI - Rosmarinic acid protects against experimental diabetes with cerebral ischemia: relation to inflammation response. PG - 28 LID - 10.1186/1742-2094-10-28 [doi] AB - BACKGROUND: Inflammatory activation plays a vital role in the pathophysiological mechanisms of stroke, exerting deleterious effects on the progression of tissue damage and may lead to the vascular damage in diabetes. The objectives of this study were to determine the effects of rosmarinic acid (RA) on a cultured neuronal cell line, SH-SY5Y in vitro and experimental ischemic diabetic stroke in vivo. METHODS: For oxygen-glucose deprivation (OGD) and tumor necrosis factor-alpha (TNF-alpha) stimulated SH-SY5Y cell line in vitro, SH-SY5Y cells were incubated with RA. For an in vivo experiment, diabetic rats were subjected to middle cerebral artery occlusion (MACO) for 40 minutes followed by reperfusion for 23 h. RESULTS: Treatment of SH-SY5Y cells with RA reduced the OGD-induced apoptosis and cytotoxicity, blocked TNF-alpha-induced nuclear transcription factor kappaB (NF-kappaB) activation, and decreased high-mobility group box1 (HMGB1) expression. At doses higher than 50 mg/kg, RA produced a significant neuroprotective potential in rats with ischemia and reperfusion (I/R). RA (50 mg/kg) demonstrated significant neuroprotective activity even after delayed administration at 1 h, 3 h and 5 h after I/R. RA 50 mg/kg attenuated histopathological damage, decreased brain edema, inhibited NF-kappaB activation and reduced HMGB1 expression. CONCLUSION: These data show that RA protects the brain against I/R injury with a favorable therapeutic time-window by alleviating diabetic cerebral I/R injury and attenuating blood-brain barrier (BBB) breakdown, and its protective effects may involve HMGB1 and the NF-kappaB signaling pathway. FAU - Luan, Haiyun AU - Luan H AD - School of Pharmaceutical Sciences and Institute of Material Medica, Binzhou Medical University, Yantai 264003, People's Republic of China. FAU - Kan, Zechun AU - Kan Z FAU - Xu, Yong AU - Xu Y FAU - Lv, Changjun AU - Lv C FAU - Jiang, Wanglin AU - Jiang W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130217 PL - England TA - J Neuroinflammation JT - Journal of neuroinflammation JID - 101222974 RN - 0 (Cinnamates) RN - 0 (Depsides) RN - 0 (Inflammation Mediators) RN - 0 (Neuroprotective Agents) SB - IM MH - Animals MH - Brain Ischemia/metabolism/*prevention & control MH - Cell Line, Tumor MH - Cell Survival/drug effects/physiology MH - Cinnamates/pharmacology/*therapeutic use MH - Depsides/pharmacology/*therapeutic use MH - Diabetes Mellitus, Experimental/metabolism/*prevention & control MH - Humans MH - Inflammation Mediators/antagonists & inhibitors/*metabolism MH - Male MH - Neuroprotective Agents/pharmacology/*therapeutic use MH - Rats MH - Rats, Sprague-Dawley MH - Rosmarinic Acid PMC - PMC3614882 EDAT- 2013/02/19 06:00 MHDA- 2013/10/23 06:00 PMCR- 2013/02/17 CRDT- 2013/02/19 06:00 PHST- 2012/12/04 00:00 [received] PHST- 2013/01/30 00:00 [accepted] PHST- 2013/02/19 06:00 [entrez] PHST- 2013/02/19 06:00 [pubmed] PHST- 2013/10/23 06:00 [medline] PHST- 2013/02/17 00:00 [pmc-release] AID - 1742-2094-10-28 [pii] AID - 10.1186/1742-2094-10-28 [doi] PST - epublish SO - J Neuroinflammation. 2013 Feb 17;10:28. doi: 10.1186/1742-2094-10-28.