An update on approved and emerging drugs for the treatment of postpartum depression.

Ideggyogy Sz

Department of Medical Pharmacology, Faculty of Medicine, Gaziantep University, 27310, Gaziantep, Turkey.

Published: July 2024

AI Article Synopsis

  • Postpartum mental health disorders, including depression and anxiety, often stem from issues like poor relationships, lack of support, low socioeconomic status, and are prevalent in those who experienced depressive symptoms during pregnancy.
  • Reproductive hormones, particularly progesterone and its metabolite allopregnanolone, significantly affect mood and mental health during the peripartum period; low levels of allopregnanolone are linked to a higher risk of postpartum depression.
  • Synthetic allopregnanolone treatments, Brexanolone and Zuranolone, have been approved for postpartum depression; Brexanolone is given via IV for 60 hours with immediate effects, while Zuranolone is taken orally.

Article Abstract

Depression, anxiety and psychotic disorders are common perinatal mental health disorders in the postpartum period. Depressive symptoms that occur postpartum are also present in the prenatal period in 50% of patients. Risk factors for the development of postpartum depression include poor relationship with the partner, lack of social support, mother’s low socioeconomic status and multiparity. It has been determined that reproductive hormones change significantly during peripartum. Progesterone is one of these hormones and acts on the central nervous system starting from the fetal period; neurogenesis, neuromodulation, sedation are some of these effects. It has also been observed that progesterone has positive effects on learning, memory and mood. Progesterone exerts its effects on the central nervous system by converting into its metabolite allopregnanolone. Allopregnanolone is one of the neuroactive steroids, and found in similar amounts in the circulation of pregnant women and fetuses. It acts on synaptic and extrasynaptic γ-aminobutyric acid type A (GABAA) receptors and is a positive allosteric modulator of the GABAA receptor. Allopregnanolone increases both the receptor’s opening frequency and its open duration and improves GABAergic current. Low serum allopregnanolone levels in the second trimester are predictive of postpartum depression. Each 1 ng/mL increase in serum allopregnanolone level reduces the risk of development of postpartum depression by 63%. Brexanolone and zuranolone are synthetic allopregnanolone preparations approved by the FDA for use in female patients with postpartum depression. They act via positive allosteric modulation on the GABAA receptor. Brexanolone is administered via intravenous infusion at varying infusion rates in a healthcare facility over 60 hours. Its effect starts immediately after treatment and continues until the 30th day of follow-up, and depressive mood does not recur. Zuranolone was developed for oral use, and administered as a single dose of 50 mg after a fatty meal. Their effectiveness has been demonstrated in patients with treatment-resistant depression. The development of other novel agents that act on the GABAA receptor and other pathways for the treatment of postpartum depression is in progress.

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Source
http://dx.doi.org/10.18071/isz.77.0227DOI Listing

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