PMID- 28244007 OWN - NLM STAT- MEDLINE DCOM- 20190523 LR - 20210222 IS - 1559-1182 (Electronic) IS - 0893-7648 (Linking) VI - 55 IP - 3 DP - 2018 Mar TI - Effects of Tenascin-C Knockout on Cerebral Vasospasm After Experimental Subarachnoid Hemorrhage in Mice. PG - 1951-1958 LID - 10.1007/s12035-017-0466-x [doi] AB - A matricellular protein tenascin-C (TNC) has been suggested to play a role in the pathogenesis of cerebral vasospasm after subarachnoid hemorrhage (SAH), but the direct evidence remains lacking. In this study, we examined effects of TNC knockout (TNKO) on cerebral vasospasm after experimental SAH in mice. C57BL/6 wild-type (WT) or TNKO mice were subjected to SAH by endovascular puncture. Ten WT and ten TNKO mice were randomized to WT sham (n = 4), TNKO sham (n = 4), WT SAH (n = 6), and TNKO SAH (n = 6) groups. In addition to neurobehavioral impairments and severity of SAH, cerebral vasospasm was assessed by morphometric measurements of the left internal carotid artery (ICA). Infiltration of inflammatory cells in the subarachnoid periarterial space was also assessed, and expressions of TNC and mitogen-activated protein kinases (MAPKs) in the ICA were immunohistochemically evaluated at 24 h post-surgery. TNC was induced in the smooth muscle cell layers and the adventitia in the spastic ICAs as well as the periarterial inflammatory cells in WT SAH mice. Compared with WT SAH mice, TNKO SAH mice showed better neurological scores and less severe cerebral vasospasm, as well as fewer inflammatory cell infiltration in the periarterial space. Post-SAH activation of MAPKs in the smooth muscle cell layers of the ICAs was also prevented in TNKO SAH mice. The findings in the present study suggest that TNC causes the development of cerebral vasospasm via pro-inflammatory effects and activation of MAPKs. FAU - Fujimoto, Masashi AU - Fujimoto M AD - Department of Neurosurgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. FAU - Shiba, Masato AU - Shiba M AD - Department of Neurosurgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. FAU - Kawakita, Fumihiro AU - Kawakita F AD - Department of Neurosurgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. FAU - Liu, Lei AU - Liu L AD - Department of Neurosurgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. FAU - Shimojo, Naoshi AU - Shimojo N AD - Department of Pathology and Matrix Biology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. FAU - Imanaka-Yoshida, Kyoko AU - Imanaka-Yoshida K AD - Department of Pathology and Matrix Biology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. AD - Research Center for Matrix Biology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. FAU - Yoshida, Toshimichi AU - Yoshida T AD - Department of Pathology and Matrix Biology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. AD - Research Center for Matrix Biology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. FAU - Suzuki, Hidenori AU - Suzuki H AUID- ORCID: 0000-0002-8555-5448 AD - Department of Neurosurgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. suzuki02@clin.medic.mie-u.ac.jp. AD - Research Center for Matrix Biology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. suzuki02@clin.medic.mie-u.ac.jp. LA - eng GR - 15K19962/Japan Society for the Promotion of Science/International GR - N/A/Mie Medical Research Foundation/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170227 PL - United States TA - Mol Neurobiol JT - Molecular neurobiology JID - 8900963 RN - 0 (Tenascin) SB - IM MH - Animals MH - Female MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Subarachnoid Hemorrhage/genetics/*metabolism MH - Tenascin/*deficiency/genetics MH - Vasospasm, Intracranial/genetics/*metabolism/*prevention & control OTO - NOTNLM OT - Cerebral vasospasm OT - Mitogen-activated protein kinase OT - Subarachnoid hemorrhage OT - Tenascin-C EDAT- 2017/03/01 06:00 MHDA- 2019/05/24 06:00 CRDT- 2017/03/01 06:00 PHST- 2016/12/31 00:00 [received] PHST- 2017/02/20 00:00 [accepted] PHST- 2017/03/01 06:00 [pubmed] PHST- 2019/05/24 06:00 [medline] PHST- 2017/03/01 06:00 [entrez] AID - 10.1007/s12035-017-0466-x [pii] AID - 10.1007/s12035-017-0466-x [doi] PST - ppublish SO - Mol Neurobiol. 2018 Mar;55(3):1951-1958. doi: 10.1007/s12035-017-0466-x. Epub 2017 Feb 27.