Two-way ANOVA or two-way ANOVA repeated measures with Tukey post hoc test were performed (males (M): N.Ch. Adnp+/+
N = 28–29; N.Ch. Adnp+/−
N = 21–22; +Ch. Adnp+/+
N = 6–7; +Ch. Adnp+/−
N = 4; +Ch. Adnp+/+ PACAP N = 8–9; +Ch. Adnp+/− PACAP N = 4; females (F): N.Ch. Adnp+/+
N = 6–7; N.Ch. Adnp+/−
N = 6; +Ch. Adnp+/+
N = 9; +Ch. Adnp+/−
N = 7; +Ch. Adnp+/+ PACAP N = 8; +Ch. Adnp+/− PACAP N = 7). For social recognition, significant differences between sniffing time of the cup (C) and mouse (M) are described. a Stressed-challenged males: main effects for group (F(4,20) = 3.464, p = 0.026) and sniffed item (F(1,20) = 20.076, p < 0.001) were found, with differences in Adnp+/+ (*p < 0.05), and PACAP-treated Adnp+/+ (***p < 0.001), and Adnp+/− mice (**p < 0.01). Vehicle-treated males: main effect for sniffed item was found (F(1,16) = 7.505, p = 0.015), with differences in non-challenged Adnp+/+ (**p < 0.01) and challenged Adnp+/+ mice (*p < 0.05). For empty cup sniffing times, main genotype effect was found (F(1,19) = 4.706, p = 0.043), with significant difference between challenged Adnp+/+ and Adnp+/− mice (*p < 0.05). b Stressed-challenged females: main effect for sniffed item was found (F(1,27) = 21.931, p < 0.001), with differences in Adnp+/+ (**p < 0.01), and PACAP-treated Adnp+/+ (*p < 0.05), and Adnp+/− mice (*p < 0.05). Vehicle-treated females: main effect for sniffed item was found (F(1,24) = 22.325, p < 0.001), with differences in non-challenged and challenged Adnp+/+ mice (*p < 0.05). c Stressed-challenged males: main treatment (F(1,19) = 13.257, p = 0.002) and interaction (F(1,19) = 11.072, p = 0.004) effects were found, with differences between challenged PACAP- and vehicle-treated Adnp+/− mice (***p < 0.001), and Adnp+/+ vs. Adnp+/− mice (*p < 0.05). Vehicle-treated males: main genotype effect (F(1,56) = 33.535, p < 0.001) was found, with differences between non-challenged Adnp+/+ and Adnp+/− mice (***p < 0.001), and challenged Adnp+/+ vs. Adnp+/− mice (*p < 0.05). d Stressed-challenged females: main interaction effect was found (F(1,27) = 7.507, p = 0.011), with differences between challenged PACAP- and vehicle-treated Adnp+/− mice (*p < 0.05), and challenged Adnp+/+ vs. Adnp+/− mice (*p < 0.05). Vehicle-treated females: main genotype effect was found (F(1,25) = 11.477, p = 0.002), with differences between non-challenged Adnp+/+ and Adnp+/− mice (*p < 0.05), and challenged Adnp+/+ vs. Adnp+/− mice (*p < 0.05)