Journal article
Imatinib Preserves Blood-Brain Barrier Integrity Following Experimental Subarachnoid Hemorrhage in Rats
Journal of neuroscience research, Vol.93(1), pp.94-103
01/01/2015
DOI: 10.1002/jnr.23475
PMCID: PMC4237717
PMID: 25196554
Abstract
Blood-brain barrier (BBB) disruption and consequent edema formation contribute to the development of early brain injury following subarachnoid hemorrhage (SAH). Various cerebrovascular insults result in increased platelet-derived growth factor receptor (PDGFR)- stimulation, which has been linked to BBB breakdown and edema formation. This study examines whether imatinib, a PDGFR inhibitor, can preserve BBB integrity in a rat endovascular perforation SAH model. Imatinib (40 or 120 mg/kg) or a vehicle was administered intraperitoneally at 1 hr after SAH induction. BBB leakage, brain edema, and neurological deficits were evaluated. Total and phosphorylated protein expressions of PDGFR-, c-Src, c-Jun N-terminal kinase (JNK), and c-Jun were measured, and enzymatic activities of matrix metalloproteinase (MMP)-2 and MMP-9 were determined in the injured brain. Imatinib treatment significantly ameliorated BBB leakage and edema formation 24 hr after SAH, which was paralleled by improved neurological functions. Decreased brain expressions of phosphorylated PDGFR-, c-Src, JNK, and c-Jun as well as reduced MMP-9 activities were found in treated animals. PDGFR- inhibition preserved BBB integrity following experimental SAH; however, the protective mechanisms remain to be elucidated. Targeting PDGFR- signaling might be advantageous to ameliorate early brain injury following SAH. (c) 2014 Wiley Periodicals, Inc.
Details
- Title: Subtitle
- Imatinib Preserves Blood-Brain Barrier Integrity Following Experimental Subarachnoid Hemorrhage in Rats
- Creators
- Yan Zhan - Loma Linda UniversityPaul R. Krafft - Loma Linda UniversityTim Lekic - Loma Linda UniversityQingyi Ma - Loma Linda UniversityRhonda Souvenir - Loma Linda UniversityJohn H. Zhang - Loma Linda UniversityJiping Tang - Loma Linda University
- Resource Type
- Journal article
- Publication Details
- Journal of neuroscience research, Vol.93(1), pp.94-103
- DOI
- 10.1002/jnr.23475
- PMID
- 25196554
- PMCID
- PMC4237717
- NLM abbreviation
- J Neurosci Res
- ISSN
- 0360-4012
- eISSN
- 1097-4547
- Publisher
- Wiley
- Number of pages
- 10
- Grant note
- P01NS082184 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA P01NS082184 / NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Neurological Disorders & Stroke (NINDS)
- Language
- English
- Date published
- 01/01/2015
- Academic Unit
- Endocrinology and Metabolism; Internal Medicine
- Record Identifier
- 9984359857802771
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