PMID- 26665003 OWN - NLM STAT- MEDLINE DCOM- 20160915 LR - 20181113 IS - 2314-6141 (Electronic) IS - 2314-6133 (Print) VI - 2015 DP - 2015 TI - Effects of Etanercept against Transient Cerebral Ischemia in Diabetic Rats. PG - 189292 LID - 10.1155/2015/189292 [doi] LID - 189292 AB - Diabetes mellitus is known to exacerbate acute cerebral ischemic injury. Previous studies have demonstrated that infarction volumes caused by transient cerebral ischemia were greater in diabetic rats than in nondiabetic rats. Tumor necrosis factor-alpha (TNF-alpha) is a proinflammatory protein produced in the brain in response to cerebral ischemia that promotes apoptosis. Etanercept (ETN), a recombinant TNF receptor (p75)-Fc fusion protein, competitively inhibits TNF-alpha. Therefore, we evaluated the neuroprotective effects of chronic or acute treatment with ETN on cerebral injury caused by middle cerebral artery occlusion/reperfusion (MCAO/Re) in rats with streptozotocin-induced diabetes. Furthermore, we evaluated the effects of ETN against the apoptosis and myeloperoxidase activity. Single administration of ETN before MCAO significantly suppressed exacerbation of cerebral damage in nondiabetic rats, as assessed by infarct volume. In contrast, the diabetic state markedly aggravated MCAO/Re-induced cerebral damage despite ETN treatment within 24 h before MCAO. However, the damage was improved by repeated administration of ETN at 900 mug/kg/daily in rats in an induced diabetic state. These results suggested that repeated administration of ETN can prevent exacerbation of cerebral ischemic injury in the diabetic state and is mainly attributed to anti-inflammatory effects. FAU - Iwata, Naohiro AU - Iwata N AD - Laboratory of Immunobiochemistry, Department of Clinical Dietetics & Human Nutrition, Faculty of Pharmaceutical Sciences, Josai University, Saitama 350-0295, Japan. FAU - Takayama, Hiroko AU - Takayama H AD - Laboratory of Immunobiochemistry, Department of Clinical Dietetics & Human Nutrition, Faculty of Pharmaceutical Sciences, Josai University, Saitama 350-0295, Japan. FAU - Xuan, Meiyan AU - Xuan M AD - Laboratory of Organic and Medicinal Chemistry, School of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Josai University, Saitama 350-0295, Japan. FAU - Kamiuchi, Shinya AU - Kamiuchi S AD - Laboratory of Immunobiochemistry, Department of Clinical Dietetics & Human Nutrition, Faculty of Pharmaceutical Sciences, Josai University, Saitama 350-0295, Japan. FAU - Matsuzaki, Hirokazu AU - Matsuzaki H AD - Laboratory of Pharmacology, School of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Josai University, Saitama 350-0295, Japan. FAU - Okazaki, Mari AU - Okazaki M AD - Laboratory of Pharmacology, School of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Josai University, Saitama 350-0295, Japan. FAU - Hibino, Yasuhide AU - Hibino Y AD - Laboratory of Immunobiochemistry, Department of Clinical Dietetics & Human Nutrition, Faculty of Pharmaceutical Sciences, Josai University, Saitama 350-0295, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151119 PL - United States TA - Biomed Res Int JT - BioMed research international JID - 101600173 RN - 0 (Neuroprotective Agents) RN - 0 (Tumor Necrosis Factor-alpha) RN - OP401G7OJC (Etanercept) SB - IM MH - Animals MH - Apoptosis/drug effects MH - Diabetes Mellitus, Experimental/complications/*drug therapy/genetics/physiopathology MH - Etanercept/*administration & dosage MH - Humans MH - Infarction, Middle Cerebral Artery/drug therapy/genetics/physiopathology MH - Inflammation/*drug therapy/genetics/pathology MH - Ischemic Attack, Transient/complications/*drug therapy/genetics/physiopathology MH - Neuroprotective Agents MH - Rats MH - Tumor Necrosis Factor-alpha/antagonists & inhibitors/metabolism PMC - PMC4668299 EDAT- 2015/12/15 06:00 MHDA- 2016/09/16 06:00 PMCR- 2015/11/19 CRDT- 2015/12/15 06:00 PHST- 2015/08/17 00:00 [received] PHST- 2015/10/28 00:00 [accepted] PHST- 2015/12/15 06:00 [entrez] PHST- 2015/12/15 06:00 [pubmed] PHST- 2016/09/16 06:00 [medline] PHST- 2015/11/19 00:00 [pmc-release] AID - 10.1155/2015/189292 [doi] PST - ppublish SO - Biomed Res Int. 2015;2015:189292. doi: 10.1155/2015/189292. Epub 2015 Nov 19.