Distinct accumbal subareas are involved in place conditioning of amphetamine and cocaine.
In considering the heterogeneous function of the nucleus accumbens (NAC), the present work evaluated the conditioned place preference (CPP) after local infusion of d-amphetamine (AMP; 10, 15 microg/side) or cocaine (COC; 50, 100 microg/side) into two subareas of NAC, core and shell. A regular two-compartment CPP apparatus was used to test the place conditioning effects after 6 pairings of drug in one compartment and 6 pairings of vehicle in the other one. Significant CPP was observed with either AMP infused in the core area or COC infused into the shell area. Neither AMP in shell nor COC in core significantly produced CPP. These results indicate important differences between two neural substrates within NAC for the rewarding effects of AMP and COC on the CPP task.
Liao
R M
RM
Department of Psychology, National Cheng-Chi University, Taipei, Taiwan, Republic of China. rmliao@nccu.edu.tw
Chang
Y H
YH
Wang
S H
SH
Lan
C H
CH
D000818:Animals; D003042:Cocaine / Q000008:administration & dosage / Q000494:pharmacology*; D003213:Conditioning, Psychological / Q000187:drug effects* / Q000502:physiology; D003913:Dextroamphetamine / Q000008:administration & dosage / Q000494:pharmacology*; D007263:Infusions, Parenteral; D008297:Male; D008845:Microinjections; D009714:Nucleus Accumbens / Q000187:drug effects / Q000502:physiology*; D051381:Rats; D017208:Rats, Wistar
D003042:Cocaine; D003913:Dextroamphetamine