DP-b99, a membrane-activated metal ion chelator, as neuroprotective therapy in ischemic stroke

Stroke; a Journal of Cerebral Circulation
Hans-Christoph DienerGilad Rosenberg

Abstract

DP-b99 is a chelator of zinc and calcium ions that acts selectively within cell membranes and has neuroprotective properties in animal models of stroke. We present the results of a multicenter, double-blind, placebo-controlled, randomized trial to assess the safety and potential protective effects of DP-b99 in acute ischemic stroke. One hundred and fifty stroke patients with signs of cortical involvement and a National Institutes of Health Stroke Scale (NIHSS) score of 7 to 20 received a 4-day course of intravenous 1 mg/kg per day DP-b99 or placebo within 1 to 9 hours of stroke onset. Treatment with recombinant tissue plasminogen activator was not allowed. No major differences in mortality rate, causes of death, adverse events, safety laboratory tests, and ECG parameters were found between the 2 groups. The baseline NIHSS score of the 72 DP-b99- and 75 placebo-treated patients in the intent-to-treat cohort was (mean+/-SD) 12.2+/-4.0 and 12.6+/-3.3, respectively; the time to needle (mean+/-SD) was 6:36+/-1:47 and 6:28+/-1:33 hours, respectively; and the age (mean+/-SD) was 73.3+/-9.9 and 72.0+/-9.6 years, respectively. The 90-day median change from baseline (the primary end point) was -6.0 and -5.0 NIHSS points in the DP-b99 and...Continue Reading

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