ArticleInternational journal of molecular sciences2026
Male Stress Is Associated with Ovarian and Endometrial Responses in ICSI Cycles: Is Seminal Plasma the Linchpin?
Article in International journal of molecular sciences, 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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8 authors.
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Abstract
Evidence indicates that seminal plasma (SP) has pregnancy-favorable biological effects, but there is no definitive proof that exposure to SP increases pregnancy rates in assisted reproductive techniques. We previously showed that this discrepancy may be due to male stress altering SP composition. This study investigated the association between male stress biomarkers in saliva, serum and SP and key determinants of female fertility in women exposed to their partner's SP during the intracytoplasmic sperm injection (ICSI) cycle. The prospective pilot study included couples with tubal infertility who had unprotected intercourse during the ICSI cycle, supplemented by intravaginal SP injection on the oocyte retrieval day. Salivary cortisol and seminal noradrenaline were quantified by enzyme-linked immunosorbent assay to assess the activity of the hypothalamic-pituitary-adrenal axis and sympathetic nervous systems. Seminal interleukin-18 was measured using LegendPlex™ technology. Cluster analysis of male stress biomarkers identified two neuroendocrine-immune (NEI) phenotypes, characterized by signs of acute (phenotype-1) and chronic (phenotype-2) stress. Women with NEI phenotype-2 partners had fewer collected, mature, and fertilized oocytes, thinner endometrium, and significantly lower pregnancy rates (18.2%) compared to those with NEI phenotype-1 partners (84.6%). These data may suggest a dual role for SP in female fertility, depending on the type of male stress.
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