Inhibition and activation of the infralimbic (IL)-nucleus accumbens
(NA)shell circuit and methamphetamine seeking in response to drug cues.
A. Experimental timeline for experiments 7 and 8. B. Active and inactive lever
responding (left axis) and meth infusions (right axis) over 15 daily 2 hr
sessions. Self-administration data is combined for experiments represented in D
and E. The individual graphs per experiment are disaggregated by sex and
depicted in Supplemental
Figure 5. C. Active and inactive lever responding over
10 daily extinction (Ext) sessions. Extinction data is combined for all
experiments represented in D and E. The individual graphs per experiment are
disaggregated by sex and depicted in Supplemental Figure 5.
D. All groups increased active lever presses relative to
extinction in rats with DIO-hM4Di in the IL. However, lever responding following
10 mg/kg CNO was significantly decreased relative to vehicle and 3 CNO tests.
D. Reinstatement levels were similar in rats with DIO-hM3Dq in
the IL in response to VEHICLE or CNO.
*Significant difference from 10 mg/kg CNO.
#Significant difference from extinction.