In bacterial meningitis cortical brain damage is associated with changes in parenchymal MMP-9/TIMP-1 ratio and increased collagen type IV degradation

Sellner, Johann; Leib, Stephen L. (2006). In bacterial meningitis cortical brain damage is associated with changes in parenchymal MMP-9/TIMP-1 ratio and increased collagen type IV degradation. Neurobiology of disease, 21(3), pp. 647-656. Amsterdam: Elsevier 10.1016/j.nbd.2005.09.007

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Adverse outcome in bacterial meningitis is associated with the breakdown of the blood-brain barrier (BBB). Matrix-metalloproteinases (MMPs) facilitate this process by degradation of components of the BBB. This in turn results in acute complications of bacterial meningitis including edema formation, increased intracranial pressure and subsequent ischemia. We determined the parenchymal balance of MMP-9 and TIMP-1 (tissue inhibitor of MMP) and the structural integrity of the BBB in relation to cortical damage in an infant rat model of pneumococcal meningitis. The data demonstrate that the extent of cortical damage is significantly associated with parenchymal gelatinolytic activity and collagen type IV degradation. The increased gelatinolysis was found to be associated with a brain parenchymal imbalance of MMP-9/TIMP-1. These findings provide support to the concept that MMPs mediated disruption of the BBB contributes to the pathogenesis of bacterial meningitis and that protection of the vascular unit may have neuroprotective potential.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Service Sector > Institute for Infectious Diseases
UniBE Contributor:	Leib, Stephen
ISSN:	0969-9961
ISBN:	16257222
Publisher:	Elsevier
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:46
Last Modified:	05 Dec 2022 14:14
Publisher DOI:	10.1016/j.nbd.2005.09.007
PubMed ID:	16257222
Web of Science ID:	000235899100020
URI:	https://boris.unibe.ch/id/eprint/19105 (FactScience: 1476)