期刊
EPILEPSY & BEHAVIOR
卷 19, 期 3, 页码 278-283出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.yebeh.2010.07.023
关键词
Memory; Epileptogenesis; Behavioral deficits; Leptin; Status epilepticus; Neuroprotection
We investigated the potential neuroprotective effects of leptin (LEP) against cellular damage, long-term recurrent spontaneous seizures, and behavioral changes associated with kainate (KA)-induced status epilepticus (SE). Adult Sprague-Dawley rats were sacrificed 24 hours after KA injections, and hippocampi were subjected to histological analysis. In the acute condition, one group received 12 mg/kg KA intraperitoneally (KAac group), and another group received 12 mg/kg KA intraperitoneally, followed by two intraperitoneal LEP injections of 4 mg/kg each, 1 and 13 hours after KA (KALEPac group). For long-term outcomes, one group received KA (KA group), and the other group received three intraperitoneal LEP injections (4 mg/kg at 1 hour, and 2 mg/kg at 13 and 24 hours) after KA (KALEP group). Controls were sham manipulated. Behavioral tests started 6 weeks after SE. All rats that received KA underwent behavioral seizures of comparable severity. Compared with the KAac group, the KALEPac group had significantly larger pyramidal cell surface areas and fewer black-stained degenerating neurons with silver stain. The KALEP and KA groups were comparable with respect to recurrent spontaneous seizures, aggression, hyperactivity, and impaired memory. We show that leptin reduces cellular injury associated with KA-induced SE, but does not prevent long-term recurrent spontaneous seizures and behavioral deficits. (C) 2010 Elsevier Inc. All rights reserved.
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