ArticleEndocrinology2022
GABA Signaling in the Posterodorsal Medial Amygdala Mediates Stress-induced Suppression of LH Pulsatility in Female Mice.
Article in Endocrinology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 14 citations in OpenAlex.
- Integrating mechanistic models to decode the GnRH pulse generator in female mice.Journal of molecular endocrinology · 2026Review
- The role of amygdala GABA neurons in controlling stress and reproduction in female mice.Nature communications · 2026Article
- Involvement of the central amygdaloid nucleus in the regulation of sex differences in the stress relief response in mice.Biology of sex differences · 2026Article
- Adolescent isolation disrupts medial amygdala and ventral tegmental area maturation and sex-specifically dysregulates transcriptional responses to cocaine and stress.Neuropharmacology · 2025Article
- Disrupting the Gut-Brain Axis: How Artificial Sweeteners Rewire Microbiota and Reward Pathways.International journal of molecular sciences · 2025Review
- Neuronal network dynamics in the posterodorsal amygdala: shaping reproductive hormone pulsatility.Journal of the Royal Society, Interface · 2024Article
- NK3R signalling in the posterodorsal medial amygdala is involved in stress-induced suppression of pulsatile LH secretion in female mice.Journal of neuroendocrinology · 2024Article
- Postweaning Social Isolation Alters Puberty Onset by Suppressing Electrical Activity of Arcuate Kisspeptin Neurons.Neuroendocrinology · 2024Article
- A Neuronal Circuit for Stress-induced Reproductive Suppression.Endocrinology · 2023Article
- Chemogenetic activation of PVN CRH neurons disrupts the estrous cycle and LH dynamics in female mice.Frontiers in endocrinology · 2023Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
Psychological stress is linked to infertility by suppressing the hypothalamic GnRH pulse generator. The posterodorsal subnucleus of the medial amygdala (MePD) is an upstream regulator of GnRH pulse generator activity and displays increased neuronal activation during psychological stress. The MePD is primarily a GABAergic nucleus with a strong GABAergic projection to hypothalamic reproductive centers; however, their functional significance has not been determined. We hypothesize that MePD GABAergic signalling mediates psychological stress-induced suppression of pulsatile LH secretion. We selectively inhibited MePD GABA neurons during psychological stress in ovariectomized (OVX) Vgat-cre-tdTomato mice to determine the effect on stress-induced suppression of pulsatile LH secretion. MePD GABA neurons were virally infected with inhibitory hM4DGi-designer receptor exclusively activated by designer drugs (DREADDs) to selectively inhibit MePD GABA neurons. Furthermore, we optogenetically stimulated potential MePD GABAergic projection terminals in the hypothalamic arcuate nucleus (ARC) and determined the effect on pulsatile LH secretion. MePD GABA neurons in OVX female Vgat-cre-tdTomato mice were virally infected to express channelrhodopsin-2 and MePD GABAergic terminals in the ARC were selectively stimulated by blue light via an optic fiber implanted in the ARC. DREADD-mediated inhibition of MePD GABA neurons blocked predator odor and restraint stress-induced suppression of LH pulse frequency. Furthermore, sustained optogenetic stimulation at 10 and 20 Hz of MePD GABAergic terminals in the ARC suppressed pulsatile LH secretion. These results show for the first time that GABAergic signalling in the MePD mediates psychological stress-induced suppression of pulsatile LH secretion and suggest a functionally significant MePD GABAergic projection to the hypothalamic GnRH pulse generator.
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