Matrix metalloproteinase-9 in an exploratory trial of intravenous minocycline for acute ischemic stroke.

Switzer, Jeffrey A; Hess, David C; Ergul, Adviye; Waller, Jennifer L; Machado, Livia S; Portik-Dobos, Vera; Pettigrew, L Creed; Clark, Wayne M et al. · Stroke · 2011

Level II

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Abstract

Plasma matrix metalloproteinase-9 levels predict posttissue plasminogen activator (tPA) hemorrhage. The authors investigated the effect of minocycline on plasma matrix metalloproteinase-9 in acute ischemic stroke in the Minocycline to Improve Neurological Outcome in Stroke (MINOS) trial and a comparison group. Matrix metalloproteinase-9 level decreased at 72 hours compared with baseline in MINOS (tPA, P=0.0022; non-tPA, P=0.0066) and was lower than in the non-MINOS comparison group at 24 hours (tPA, P<0.0001; non-tPA, P=0.0019). Lower plasma matrix metalloproteinase-9 was seen among tPA-treated subjects in the MINOS trial. Combining minocycline with tPA may prevent the adverse consequences of thrombolytic therapy through suppression of matrix metalloproteinase-9 activity.

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