Abstract
Abstract Disclosure: J. Choi: None. M. Kim: None. Gonadotropin-releasing hormone (GnRH) has a role in hypothalamic control of depression, but the underlying patterns and relationship with downstream reproductive hormones are still unclear. Here we report that hypothalamic GnRH pulse frequency and irregularity increase before GnRH pulse amplitude slowly decreases during social defeated stress models (SDS). While mice castrated and testosterone inhibited induced depression by conducting SDS, these mice led to anti-depression effects and affected by GnRH signaling, indicating that high-frequency GnRH pulses. Regramming the endogenous GnRH pulses of depressed male mice via an optogenetic approach revealed that increasing GnRH pulses frequency causes depression acceleration, while lowering the frequency of and stabilizing GnRH pulses can slow down depression. In conclusion, GnRH pulses are important for depression in male mice. Presentation: 6/1/2024
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