ArticlebioRxiv : the preprint server for biology2026
Region-specific regulation of glucocorticoid and mineralocorticoid receptor signaling in a mouse model of oral contraceptive exposure.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors.
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Abstract
Combined oral contraceptives (OCs), containing synthetic estrogen and a progestin such as levonorgestrel (LVNG), are widely used, and up to 10% of users experience adverse mood states and increased depression risk. It is well-established that OCs modulate the hypothalamic-pituitary-adrenal (HPA) axis and blunt the cortisol responses to acute stress. This interaction with stress regulatory pathways is one mechanism by which OCs might impact mood. Here, we used a mouse model of OC exposure (ethinyl estradiol (EE) + LVNG) to investigate how OCs affect regulation of the diurnal CORT cycle and stress-related signaling in the dorsal and ventral hippocampus and paraventricular nucleus of the hypothalamus (PVN). We found that EE+LVNG did not alter basal corticosterone (CORT) levels, but impaired glucocorticoid receptor (GR) - mediated negative feedback in the dexamethasone suppression test. Molecular analyses revealed distinct, region-specific effects. In the dorsal hippocampus, EE+LVNG enhanced glucocorticoid receptor (GR)-dependent gene signaling and prolonged
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