RFamide-Related Peptide Neurons Modulate Reproductive Function and Stress Responses.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Asha MamgainG M Anderson

Abstract

RF-amide related peptide 3 (RFRP-3) is a neuropeptide thought to inhibit central regulation of fertility. We investigated whether alterations in RFRP neuronal activity led to changes in puberty onset, fertility, and stress responses, including stress and glucocorticoid-induced suppression of pulsatile luteinizing hormone secretion. We first validated a novel RFRP-Cre mouse line, which we then used in combination with Cre-dependent neuronal ablation and DREADD technology to selectively ablate, stimulate, and inhibit RFRP neurons to interrogate their physiological roles in the regulation of fertility and stress responses. Chronic RFRP neuronal activation delayed male puberty onset and female reproductive cycle progression, but RFRP-activated and ablated mice exhibited apparently normal fertility. When subjected to either restraint- or glucocorticoid-induced stress paradigms. However, we observed a critical sex-specific role for RFRP neurons in mediating acute and chronic stress-induced reproductive suppression. Female mice exhibiting RFRP neuron ablation or silencing did not exhibit the stress-induced suppression in pulsatile luteinizing hormone secretion observed in control mice. Furthermore, RFRP neuronal activation markedly st...Continue Reading

Citations

Apr 20, 2021·Integrative and Comparative Biology·Angela R Freeman
Jun 26, 2021·Frontiers in Neuroendocrinology·Chayarndorn PhumsatitpongSuzanne M Moenter
Sep 4, 2021·Veterinary World·Smruti Smita MohapatraKinsuk Das
Nov 11, 2021·Frontiers in Neuroendocrinology·You Lee SonKazuyoshi Tsutsui

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