Figure 5. Effects of doxycycline (Dox) inducible overexpression of ΔFosB or ΔcJun on L-DOPA-induced dyskinesia.
Mice that inducibly overexpress ΔFosB (A, B, Off Dox) or ΔcJun (C, D, Off Dox) and control littermates (A–D, On Dox) were lesioned with 6-OHDA and treated for 14 days with 20 mg/kg of L-DOPA (in combination with 12.5 mg/kg of benserazide). A, C, Time profile of total abnormal involuntary movements (AIMs) in mice scored for 1 min every 20 min over a period of 2 hr after the last administration of L-DOPA. Repeated measures ANOVA revealed a significant effect of genotype for mice overexpressing ΔFosB and ΔcJun (p < 0.05 vs. respective control On Dox littermates). B, Sum of total abnormal involuntary movements (AIMs) scored for a period of 2 hr immediately following the last administration of L-DOPA. * p < 0.05 vs. control (On Dox) littermates for the FosB group and for the ΔcJun group. Data are shown as means ± SEM.