Pooled lysates of laser-catapult microdissected VMN nNOS-immunoreactive (-ir) neurons created for each treatment group were evaluated by Western blot for ERα [Panel A; male data at left, female data at right], ERβ [Panel B; male data at left, female data at right], and GPER [Panel C; male data at left, female data at right] protein expression in groups of vehicle-pretreated male or female rats injected subcutaneously (sc) with either vehicle (solid white bars; n=6 males, n=6 females) or neutral protamine Hagedorn insulin (INS; 10.0 U/kg bw; solid gray bars; n=6 males, n=6 females) and groups of INS-injected animals of either sex that were pretreated with MPP (diagonal-striped gray bars; n=6 males, n=6 females) or PHTPP (cross-hatched gray bars; n=6 males, n=6 females). Data depict mean normalized protein O.D. ± S.E.M. Data were analyzed by two-way ANOVA for sex versus treatment. *p <0.05; **p <0.01; ***p <0.001.