PMID- 25366602 OWN - NLM STAT- MEDLINE DCOM- 20150316 LR - 20151119 IS - 0065-1419 (Print) IS - 0065-1419 (Linking) VI - 120 DP - 2015 TI - Effects of tenascin-C on early brain injury after subarachnoid hemorrhage in rats. PG - 69-73 LID - 10.1007/978-3-319-04981-6_12 [doi] AB - BACKGROUND AND PURPOSE: We previously reported that tenascin-C (TNC), a matricellular protein, was involved in the pathogenesis of cerebral vasospasm after subarachnoid hemorrhage (SAH), but the role of TNC in early brain injury (EBI) is unknown. This study assessed whether inhibition of TNC upregulation in brain by imatinib mesylate (imatinib), an inhibitor of the tyrosine kinases of platelet-derived growth factor receptors, prevents EBI after experimental SAH. METHODS: Rats were assigned to sham, SAH plus vehicle, and SAH plus imatinib groups (n = 4 per group). Imatinib (50 mg/kg body weight) was administered intraperitoneally to rats undergoing SAH by endovascular perforation, and EBI was evaluated using terminal deoxynucleotidyl transferase-mediated uridine 5-triphosphate-biotin nick end-labeling staining at 24 h after SAH. Imatinib-treated SAH rats were also treated by a cisternal injection of recombinant TNC. RESULTS: SAH upregulated TNC and caused EBI. Imatinib treatment suppressed both TNC upregulation and EBI at 24 h. Recombinant TNC reinduced EBI in imatinib-treated SAH rats. CONCLUSIONS: TNC may be involved in the pathogenesis of EBI after SAH. FAU - Shiba, Masato AU - Shiba M AD - Department of Neurosurgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan, mshiba@clin.medic.mie-u.ac.jp. FAU - Fujimoto, Masashi AU - Fujimoto M FAU - Kawakita, Fumio AU - Kawakita F FAU - Imanaka-Yoshida, Kyoko AU - Imanaka-Yoshida K FAU - Yoshida, Toshimichi AU - Yoshida T FAU - Kanamaru, Kenji AU - Kanamaru K FAU - Taki, Waro AU - Taki W FAU - Suzuki, Hidenori AU - Suzuki H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Austria TA - Acta Neurochir Suppl JT - Acta neurochirurgica. Supplement JID - 100962752 RN - 0 (Benzamides) RN - 0 (Piperazines) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Pyrimidines) RN - 0 (Tenascin) RN - 8A1O1M485B (Imatinib Mesylate) SB - IM MH - Animals MH - Benzamides/*pharmacology MH - Brain Injuries/*drug therapy/metabolism/pathology MH - Disease Models, Animal MH - Imatinib Mesylate MH - In Situ Nick-End Labeling MH - Male MH - Piperazines/*pharmacology MH - Protein Kinase Inhibitors/pharmacology MH - Pyrimidines/*pharmacology MH - Rats, Sprague-Dawley MH - Subarachnoid Hemorrhage/*drug therapy/metabolism/pathology MH - Tenascin/*antagonists & inhibitors/metabolism MH - Up-Regulation/drug effects EDAT- 2014/11/05 06:00 MHDA- 2015/03/17 06:00 CRDT- 2014/11/05 06:00 PHST- 2014/11/05 06:00 [entrez] PHST- 2014/11/05 06:00 [pubmed] PHST- 2015/03/17 06:00 [medline] AID - 10.1007/978-3-319-04981-6_12 [doi] PST - ppublish SO - Acta Neurochir Suppl. 2015;120:69-73. doi: 10.1007/978-3-319-04981-6_12.