Amphetamine induces hydroxyl radical formation in the striatum of rats.
Life Sci
; 61(22): 2219-29, 1997.
Article
in En
| MEDLINE
| ID: mdl-9393941
ABSTRACT
Amphetamine-induced hydroxyl radical formation in the striatum of rats was investigated in this study. With the utilization of the microdialysis and HPLC-ECD, the striatal dopamine (DA) release and the formation of 2,3-dihydroxybenzoic acid (2,3-DHBA), derived from the reaction of hydroxyl radicals (.OH) and salicylate in perfusion, were monitored and detected during desipramine and/or amphetamine (AMPH) administration. Our data revealed that after desipramine treatment AMPH injections not only amplified striatal DA release and 2,3-DHBA formation, but also intensified the stereotyped behaviors induced by AMPH. Furthermore, we discovered that alpha-methyl-para-tyrosine (alpha-MT) pretreatment prevented the onset of the above responses. In desipramine-treated rats, the tissue homogenization study demonstrated that a single dose of AMPH produced long-term depletion of striatal DA; this was not seen in saline-treated rats. Moreover, striatal DA depletion could be lessened by pretreatment with mannitol, a .OH scavenger. These results indicate that AMPH-induced striatal .OH formation might be DA-related in desipramine-treated rats, and suggest that .OH formation might be correlated with AMPH-induced neurodegeneration.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Hydroxyl Radical
/
Corpus Striatum
/
Amphetamine
/
Central Nervous System Stimulants
Limits:
Animals
Language:
En
Journal:
Life Sci
Year:
1997
Document type:
Article
Affiliation country:
China