title: A novel embolic model of cerebral infarction and evaluation of Stachybotrys microspora triprenyl phenol-7 (SMTP-7), a novel fungal triprenyl phenol metabolite.
abstract: The aim of the present study was to establish a novel embolic model of cerebral infarction and to evaluate the effect of Stachybotrys microspora triprenyl phenol-7 (SMTP-7), a novel fungal triprenyl phenol metabolite. Thrombotic occlusion was induced by transfer of acetic acid-induced embolus into the brain. The regional cerebral blood flow was measured by a laser Doppler flowmeter to check the ischemic condition. Infarction area was assessed by 2% 2,3,5-triphenyltetrazolium chloride (TTC) staining. Neurological scores were determined by a modified version of the method described by Longa et al. Emboli were accumulated at the temporal or parietal region of the middle cerebral artery. Additionally, we found that this model showed decreased cerebral blood flow and increased infarction area and neurological scores. Treatment with tissue plasminogen activator (t-PA) reduced infarction area and the neurological scores in a dose-dependent manner; moreover, the decreased cerebral blood flow recovered. SMTP-7 also reduced these values. The therapeutic time window of SMTP-7 was longer than that of t-PA. These results indicate that this model may be useful for understanding the pathophysiological mechanisms of cerebral infarction and evaluating the effects of therapeutic agents. Additionally, SMTP-7 is a promising approach to extend the therapeutic time window. Therefore, this novel compound may represent a novel approach for the treatment of cerebral infarction.
authors: Department of Pharmacology, School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, Japan. t-hashi@pharm.showa-u.ac.jp
authors: Terumasa
authors: T
authors: Hashimoto
authors: Keita
authors: K
authors: Shibata
authors: Koji
authors: K
authors: Nobe
authors: Keiji
authors: K
authors: Hasumi
authors: Kazuo
authors: K
authors: Honda
mesh_terms: D000818:Animals; D001578:Benzopyrans / Q000302:isolation & purification / Q000378:metabolism* / Q000627:therapeutic use*; D002544:Cerebral Infarction / Q000175:diagnosis / Q000188:drug therapy* / Q000503:physiopathology; D004195:Disease Models, Animal; D004353:Drug Evaluation, Preclinical / Q000379:methods; D005849:Gerbillinae; D020766:Intracranial Embolism / Q000188:drug therapy* / Q000473:pathology / Q000503:physiopathology; D008297:Male; D011760:Pyrrolidinones / Q000302:isolation & purification / Q000378:metabolism* / Q000627:therapeutic use*; D013191:Stachybotrys
chemical_list: D001578:Benzopyrans; D011760:Pyrrolidinones; C409191:SMTP 7