a Timeline of vehicle, SNAP or kisspeptin (Kp10) Treatment. Figure created partially with BioRender.com. b Effect of subcutaneous treatment with kisspeptin or SNAP (NO donor) on lordosis behavior in control (n = 12), highly receptive (HR) females (n = 4) and MR females (n = 13). RM two-way ANOVA; Group effect: F(2,26) = 4.173, p = 0.027; treatment effect: F(1.747,45.42) = 5.992, p = 0.007; interaction between the two factors: F(4,52) = 2.163, p = 0.086. ns: not significant, **p = 0.003; Bonferroni’s multiple comparisons test. c Schematic representation of the infusion cannula into the VMHvl and the histological verification of the cannulas placement. Figure partially created with BioRender.com. d Effect of SNAP infusion into the VMHvl on lordosis behavior in HR females compared to MR females. RM two-way ANOVA; Group effect: F(1,13) = 24.14, p = 0.0003; treatment effect: F(1,13) = 8.646, p = 0.0115; group × treatment effect: F(1,13) = 0.229, p = 0.64. *p < 0.0362; Bonferroni’s post hoc test. n = 6 for HR females, and n = 9 for MR females. e Number of pnNOS neurons in the VMHvl following vehicle or SNAP subcutaneous administration. Two-way ANOVA; group effect: F(1,18) = 1.107, p = 0.3067; treatment effect: F(1,18) = 40.98, p < 0.0001; interaction: F(1,18) = 0.1047, p = 0.75. Control treated with vehicle (n = 4), control treated with SNAP (n = 4), MR females treated with vehicle (n = 7), MR females treated with SNAP (n = 7). f Number of pnNOS neurons in the PVN in vehicle or SNAP treated female mice. Two-way ANOVA; factor group: F(1,15) = 1.34, p = 0.26; treatment: F(1,15) = 15.85, p = 0.0012; group × treatment: F(1,15) = 1.214, p = 0.287. n = 4 for the control treated with vehicle or SNAP, n = 5 for MR females treated with vehicle, n = 6 for MR group treated with SNAP. g Representative confocal images showing pnNOS expression in vehicle and SNAP treated females. All data are presented as mean ± SEM. Adjustments were made whenever multiple comparisons test is used. Source data are provided as a Source Data file.