Volume 893, Issue 1 p. 243-253

Apoptosis and Necrosis in Cerebrovascular Disease

B. JOY SNIDER

Corresponding Author

B. JOY SNIDER

Center for the Study of Nervous System Injury and the Department of Neurology, Washington University School of Medicine, St. Louis, Missouri 63110, USA

Address for correspondence: B. Joy Snider, Department of Neurology, Campus Box 8111, 660 S. Euclid, St. Louis, Missouri 63110. Phone: 314-747-2107; fax: 314-362-9462. e-mail: [email protected]Search for more papers by this author
FRANK J. GOTTRON

FRANK J. GOTTRON

Center for the Study of Nervous System Injury and the Department of Neurology, Washington University School of Medicine, St. Louis, Missouri 63110, USA

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DENNIS W. CHOI

DENNIS W. CHOI

Center for the Study of Nervous System Injury and the Department of Neurology, Washington University School of Medicine, St. Louis, Missouri 63110, USA

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First published: 06 February 2006
Citations: 90

Abstract

ABSTRACT: Neuronal death following ischemic insults has been thought to reflect necrosis. However, recent evidence from several labs suggests that programmed cell death, leading to apoptosis, might additionally contribute to this death. We have used both in vitro and in vivo models to study the role of apoptosis in ischemic cell death. Some features of apoptosis (TUNEL staining, internucleosomal DNA fragmentation, sensitivity to cycloheximide) were observed following transient focal ischemia in rats. Brief transient focal ischemia was followed by delayed infarction more than 3 days later; this delayed infarction was sensitive to cycloheximide. A cycloheximide-sensitive component of neuronal cell death was also observed in cultured murine neocortical neurons deprived of oxygen-glucose in the presence of glutamate receptor antagonists. This presumed ischemic apoptosis was attenuated by caspase inhibitors, or by homozygous deletion of the bax gene. Neurons may undergo both apoptosis and necrosis after ischemic insults, and thus it may be therapeutically desirable to block both processes.