RGD Reference Report - Inhibitory effects of ginseng total saponins on behavioral sensitization and dopamine release induced by cocaine. - Rat Genome Database

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Inhibitory effects of ginseng total saponins on behavioral sensitization and dopamine release induced by cocaine.

Authors: Lee, BomBi  Yang, Chae Ha  Hahm, Dae-Hyun  Lee, Hye-Jung  Han, Seung-Moo  Kim, Kyung-Soo  Shim, Insop 
Citation: Lee B, etal., Biol Pharm Bull. 2008 Mar;31(3):436-41. doi: 10.1248/bpb.31.436.
RGD ID: 405101699
Pubmed: PMID:18310906   (View Abstract at PubMed)
DOI: DOI:10.1248/bpb.31.436   (Journal Full-text)

Many studies have suggested that the behavioral and reinforcing effects of cocaine can be mediated by the central dopaminergic systems. It has been shown that repeated injections of cocaine produce an increase in locomotor activity, the expression of the immediate-early gene, c-fos, and the release of dopamine (DA) in the nucleus accumbens (NAc), which is one of the main dopaminergic terminal areas. Several studies have shown that behavioral activation and changes in extracellular dopamine levels in the central nervous system induced by psychomotor stimulants are prevented by ginseng total saponins (GTS). In order to investigate the effects of GTS on the repeated cocaine-induced behavioral and neurochemical alterations, we examined the influence of GTS on the cocaine-induced behavioral sensitization and on c-Fos expression in the brain using immunohistochemistry in rats repeatedly treated with cocaine. We also examined the effect of GTS on cocaine-induced dopamine release in the NAc of freely moving rats repeatedly treated with cocaine using an in vivo microdialysis technique. Pretreatment with GTS (100, 200, 400 mg/kg, i.p.) 30 min before the daily injections of cocaine (15 mg/kg, i.p.) significantly inhibited the repeated cocaine-induced increase in locomotor activity as well as the c-Fos expression in the core and shell in a dose-dependent manner. Also, pretreatment with GTS significantly decreased the repeated cocaine-induced increase in dopamine release in the NAc. Our data demonstrate that the inhibitory effects of GTS on the repeated cocaine-induced behavioral sensitization were closely associated with the reduction of dopamine release and the postsynaptic neuronal activity. The results of the present study suggest that GTS may be effective for inhibiting the behavioral effects of cocaine by possibly modulating the central dopaminergic system. These results also suggest that GTS may prove to be a useful therapeutic agent for cocaine addiction.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
FOSHumancocaine dependence treatmentISOFos (Rattus norvegicus) RGD 
FosRatcocaine dependence treatmentIEP  RGD 
FosMousecocaine dependence treatmentISOFos (Rattus norvegicus) RGD 

Objects Annotated

Genes (Rattus norvegicus)
Fos  (Fos proto-oncogene, AP-1 transcription factor subunit)

Genes (Mus musculus)
Fos  (FBJ osteosarcoma oncogene)

Genes (Homo sapiens)
FOS  (Fos proto-oncogene, AP-1 transcription factor subunit)


Additional Information