PMID- 12611640 OWN - NLM STAT- MEDLINE DCOM- 20030513 LR - 20200225 IS - 1582-1838 (Print) IS - 1582-4934 (Electronic) IS - 1582-1838 (Linking) VI - 6 IP - 4 DP - 2002 Oct-Dec TI - Dantrolene protects neurons against kainic acid induced apoptosis in vitro and in vivo. PG - 555-69 AB - Apoptotic cell death induced by kainic acid (KA) in cultures of rat cerebellar granule cells (CGC) and in different brain regions of Wistar rat pups on postnatal day 21 (P21) was studied. In vitro, KA (100-500 microM) induced a concentration-dependent loss of cell viability in MTT assay and cell death had apoptotic morphology as studied by chromatin staining with propidium iodide (PI). In vivo, twenty-four hours after induction of status epilepticus (SE) by an intraperitoneal KA injection (5 mg/kg) we quantified apoptotic cells in hippocampus (CA1 and CA3), parietal cortex and cerebellum using PI staining and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) technique. We report that dantrolene, a specific ryanodine receptor antagonist, was able to significantly reduce the apoptotic cell death in CGC cultures and in hyppocampal CA1 and parietal cortex regions. Our finding can be valuable for neuroprotective therapy strategies in patients with repeated generalized seizures or status epilepticus. FAU - Popescu, B O AU - Popescu BO AD - Department of Neurology, University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania. Bogdan.Popescu@univermed-cdgm.ro FAU - Oprica, M AU - Oprica M FAU - Sajin, Maria AU - Sajin M FAU - Stanciu, Cristina L AU - Stanciu CL FAU - Bajenaru, O AU - Bajenaru O FAU - Predescu, Andreea AU - Predescu A FAU - Vidulescu, Cristina AU - Vidulescu C FAU - Popescu, L M AU - Popescu LM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Cell Mol Med JT - Journal of cellular and molecular medicine JID - 101083777 RN - F64QU97QCR (Dantrolene) RN - SIV03811UC (Kainic Acid) SB - IM MH - Animals MH - Apoptosis/*drug effects MH - Brain/drug effects MH - Cells, Cultured MH - DNA Damage/drug effects MH - Dantrolene/*pharmacology MH - Dose-Response Relationship, Drug MH - Kainic Acid/*pharmacology MH - Neurons/*drug effects/*pathology MH - Rats MH - Rats, Wistar PMC - PMC6741407 EDAT- 2003/03/04 04:00 MHDA- 2003/05/14 05:00 PMCR- 2002/10/01 CRDT- 2003/03/04 04:00 PHST- 2003/03/04 04:00 [pubmed] PHST- 2003/05/14 05:00 [medline] PHST- 2003/03/04 04:00 [entrez] PHST- 2002/10/01 00:00 [pmc-release] AID - 006.004.07 [pii] AID - JCMM555 [pii] AID - 10.1111/j.1582-4934.2002.tb00454.x [doi] PST - ppublish SO - J Cell Mol Med. 2002 Oct-Dec;6(4):555-69. doi: 10.1111/j.1582-4934.2002.tb00454.x.