Article (Scientific journals)
Extended therapeutic window for caspase inhibition and synergy with MK-801 in the treatment of cerebral histotoxic hypoxia.
Schulz, Jörg B.; Weller, Michael; Matthews, Russell T. et al.
1998In Cell Death and Differentiation, 5 (10), p. 847 - 857
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Keywords :
Amino Acid Chloromethyl Ketones; Caspase Inhibitors; Cysteine Proteinase Inhibitors; Malonates; Neuroprotective Agents; Proto-Oncogene Proteins c-bcl-2; benzyloxycarbonylvalyl-alanyl-aspartyl fluoromethyl ketone; Dizocilpine Maleate; Cycloheximide; malonic acid; CASP3 protein, human; Casp3 protein, mouse; Casp3 protein, rat; Caspase 2; Caspase 3; Caspases; Amino Acid Chloromethyl Ketones/pharmacology; Amino Acid Chloromethyl Ketones/therapeutic use; Animals; Apoptosis; Brain/drug effects; Brain/pathology; Caspases/metabolism; Corpus Striatum/drug effects; Corpus Striatum/pathology; Corpus Striatum/physiology; Cycloheximide/pharmacology; Cysteine Proteinase Inhibitors/pharmacology; Cysteine Proteinase Inhibitors/therapeutic use; Dizocilpine Maleate/pharmacology; Dizocilpine Maleate/therapeutic use; Drug Synergism; Humans; Hypoxia, Brain/chemically induced; Hypoxia, Brain/pathology; Hypoxia, Brain/prevention & control; In Situ Nick-End Labeling; Male; Malonates/toxicity; Mice; Mice, Transgenic; Neuroprotective Agents/pharmacology; Neuroprotective Agents/therapeutic use; Proto-Oncogene Proteins c-bcl-2/genetics; Proto-Oncogene Proteins c-bcl-2/metabolism; Rats; Rats, Sprague-Dawley; Genes, bcl-2; Excitotoxicity; Malonate; Nedd2; Therapeutic window; Molecular Biology; Cell Biology
Abstract :
[en] In rats, striatal histotoxic hypoxic lesions produced by the mitochondrial toxin malonate resemble those of focal cerebral ischemia. Intrastriatal injections of malonate induced cleavage of caspase-2 beginning at 6 h, and caspase-3-like activity as identified by DEVD biotin affinity-labeling within 12 h. DEVD affinity-labeling was prevented and lesion volume reduced in transgenic mice overexpressing BCL-2 in neuronal cells. Intrastriatal injection of the tripeptide, N-benzyloxycarbonyl-Val-Ala-Asp-fluoromethylketone (zVAD-fmk), a caspase inhibitor, at 3 h, 6 h, or 9 h after malonate injections reduced the lesion volume produced by malonate. A combination of pretreatment with the NMDA antagonist, dizocilpine (MK-801), and delayed treatment with zVAD-fmk provided synergistic protection compared with either treatment alone and extended the therapeutic window for caspase inhibition to 12 h. Treatment with cycloheximide and zVAD-fmk, but not with MK-801, blocked the malonate-induced cleavage of caspase-2. NMDA injections alone resulted in a weak caspase-2 cleavage. These results suggest that malonate toxicity induces neuronal death by more than one pathway. They strongly implicate early excitotoxicity and delayed caspase activation in neuronal loss after focal ischemic lesions and offer a new strategy for the treatment of stroke.
Disciplines :
Neurology
Author, co-author :
Schulz, Jörg B.;  Experimental Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, Hoppe-Seyler-Str. 3, D-72076 Tübingen, Germany.jeorg.b.schulz@uni-tuebingen.de
Weller, Michael;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany
Matthews, Russell T.;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany ; Neurochemistry Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States
HENEKA, Michael  ;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany
Groscurth, Peter;  Institute of Anatomy, Division of Cell Biology, University of Zurich, Ch-8057 Zürich, Switzerland
Martinou, Jean-Claude;  Glaxo Inst. for Molecular Biology, Neurology Research, 1228 Plans-les-Ouates, Geneve, Switzerland
Lommatzsch, Jürgen;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany
von Coelln, Rainer;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany
Wüllner, Ullrich;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany
Löschmann, Peter-A.;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany
Beal, M. Flint;  Neurochemistry Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States
Dichgans, Johannes;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany
Klockgether, Thomas;  Exp. Neuropharmacology Laboratory, Department of Neurology, University of Tübingen, D-72076 Tübingen, Germany
More authors (3 more) Less
External co-authors :
yes
Language :
English
Title :
Extended therapeutic window for caspase inhibition and synergy with MK-801 in the treatment of cerebral histotoxic hypoxia.
Publication date :
October 1998
Journal title :
Cell Death and Differentiation
ISSN :
1350-9047
eISSN :
1476-5403
Publisher :
Nature Publishing Group, England
Volume :
5
Issue :
10
Pages :
847 - 857
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This work was supported by grants from the Deutsche Forschungsge-meinschaft (Schu 932/2-1) and the fortüne program of the University Tübingen. We thank L. Dumitrescu and I. Müller for excellent technical assistance.
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