Abstract
We examined the effects of a non-opioid antitussive, carbetapentane (CB) on kainic acid (KA)-induced neurotoxicity in rats. KA administration (10 mg/kg, i.p.) produced robust behavioral convulsions lasting 4 to 5 h. CB (12.5 and 25 mg/kg, i.p.) pretreatment consistently and in a dose-dependent manner reduced the KA-induced seizures, mortality, and marked loss of cells in regions CA1 and CA3 of the hippocampus. Consistently, CB pretreatment also significantly attenuated the KA-induced increase in Fos-related antigen immunoreactivity in the hippocampus. In contrast, pretreatment with the σ-1 receptor antagonist BD1047 (1 and 2 mg/kg, i.p.) blocked, in a dose-related manner, the neuroprotection afforded by CB. These results suggest that CB provides neuroprotection against KA insult via σ-1 receptor modulation.
Original language | English |
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Pages (from-to) | 915-922 |
Number of pages | 8 |
Journal | Life Sciences |
Volume | 69 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2001 Jul 13 |
Externally published | Yes |
Keywords
- Anticonvulsant
- Carbetapentane
- Fos-related antigen immunoreactivity
- Hippocampus
- Kainic acid
- Neuroprotection
- Seizures
- σ-1 receptor
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Pharmacology, Toxicology and Pharmaceutics(all)