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Related Concept Videos

Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

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The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...
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Related Experiment Video

Updated: Aug 6, 2025

Author Spotlight: Multiplex Immunohistochemistry for Understanding Immune Regulation by Uterine NK Cells in Pregnancy
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Interferon-λ contributes to endometrial receptivity.

Kezhen Yao1, Yu Sun1, Xiaoqun Ye1

  • 1Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.

Reproduction (Cambridge, England)
|March 20, 2023
PubMed
Summary
This summary is machine-generated.

Lower levels of interferon-lambda (IFN-λ) in the endometrium are linked to recurrent pregnancy loss. This study reveals IFN-λ

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Area of Science:

  • Reproductive Immunology
  • Endocrinology
  • Cell Biology

Background:

  • Recurrent pregnancy loss (RPL) affects women with uterine receptivity issues or immune imbalance.
  • Immune regulators at the embryo-maternal interface are crucial, but their peri-implantation roles need further study.
  • Interferon-lambda (IFN-λ) is a newer class of interferons with potential roles in early pregnancy.

Purpose of the Study:

  • To investigate the role of endometrial interferon-lambda (IFN-λ) in recurrent implantation failure (RIF).
  • To explore the regulation and functions of IFN-λ in the context of early pregnancy and fetal-maternal interactions.

Main Methods:

  • Compared endometrial IFN-λ expression in women with RIF versus fertile controls.
  • Investigated IFN-λ induction by estrogen in endometrial cells.
  • Assessed IFN-λ pathway involvement in inflammatory response, uterine receptivity, cell migration, blastocyst adhesion, and apoptosis.

Main Results:

  • Endometrial IFN-λ expression was significantly lower in women with RIF compared to fertile controls.
  • Estrogen directly induces IFN-λ expression in endometrial cells.
  • IFN-λ regulates inflammatory responses, enhances uterine receptivity, promotes cell migration and blastocyst adhesion, and reduces endometrial apoptosis.

Conclusions:

  • Endometrial IFN-λ is a novel, nonredundant regulator of fetal-maternal immune interactions.
  • Lower IFN-λ levels may contribute to spontaneous pregnancy loss in women.
  • IFN-λ represents a potential biomarker and therapeutic target for RPL.