Immunological mechanisms of low-grade systemic inflammation and its role in endometrial dysfunction in women with polycystic ovary syndrome - Report - MDSpire

Immunological mechanisms of low-grade systemic inflammation and its role in endometrial dysfunction in women with polycystic ovary syndrome

  • By

  • Liuhua Qu

  • Lu Li

  • Ling Yang

  • Ying Liu

  • July 9, 2026

  • 0 min

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Clinical Report: The Role of Low-Grade Systemic Inflammation in Endometrial Dysfunction Among Women with Polycystic Ovary Syndrome

Overview

This study investigates the impact of low-grade systemic inflammation on endometrial dysfunction in women with Polycystic Ovary Syndrome (PCOS). It highlights the association between inflammatory markers and metabolic factors, revealing significant differences in cytokine levels and endometrial characteristics between PCOS patients and controls.

Background

Polycystic Ovary Syndrome (PCOS) affects 5%-10% of women of reproductive age and is linked to various reproductive and metabolic complications. Impaired endometrial receptivity in PCOS patients contributes to lower embryo implantation rates and adverse pregnancy outcomes.

Data Highlights

ParameterPCOS GroupControl GroupP-value
BMIHigherLowerP<0.001
LH/FSH RatioHigherLowerP<0.001
TestosteroneHigherLowerP<0.001
HOMA-IRHigherLowerP<0.001
Pro-inflammatory CytokinesIncreasedNormalP<0.001
Anti-inflammatory CytokinesDecreasedNormalP<0.001

Key Findings

  • PCOS patients exhibited significantly higher BMI, LH/FSH ratio, testosterone, and HOMA-IR compared to controls.
  • Pro-inflammatory cytokines (IL-1β, IL-6, TNF-α) were significantly elevated in the PCOS group.
  • Anti-inflammatory cytokines (IL-4, IL-10) were significantly reduced in the PCOS group.
  • Endometrial blood flow patterns were poorer in the PCOS group, with higher uterine artery PI and RI.
  • Pro-inflammatory cytokines correlated positively with metabolic parameters in the PCOS group.
  • No significant correlations were observed with endometrial thickness or vascularization indices.

Clinical Implications

The findings indicate that low-grade systemic inflammation in PCOS may contribute to endometrial dysfunction.

Conclusion

The study highlights the role of low-grade systemic inflammation in endometrial dysfunction among women with PCOS.

Related Resources & Content

  1. The Journal of Clinical Endocrinology & Metabolism, 2023 -- Cytokine Profiling Across Diverse Populations Indicates Immune Dysregulation Rather Than Chronic Inflammation in Polycystic Ovary Syndrome
  2. Frontiers in Endocrinology, 2026 -- IGF-II, IGFBP-4, -6, and -7, and HMGB1 show changes in follicular fluid in PCOS
  3. Frontiers in Reproductive Health, 2026 -- Integrating evidence-based lifestyle and adjunct therapies for long-term management of polycystic ovary syndrome: mechanistic insights and clinical implications
  4. Single-cell profiling of the human endometrium in polycystic ovary syndrome, 2025 -- Nature Medicine
  5. Frontiers in Endocrinology — The opioid system in endometriosis: implications for endometrial receptivity and reproductive outcomes
  6. ESHRE Ovarian Stimulation Guideline Update 2025
  7. Single-cell profiling of the human endometrium in polycystic ovary syndrome | Nature Medicine
  8. A Systematic Review of Inflammatory Markers in Polycystic Ovary Syndrome (PCOS) and Meta-Analysis of Interleukin-6 (IL-6) in Case-Control Studies - PubMed

Original Source(s)

Immunological mechanisms of low-grade systemic inflammation and its role in endometrial dysfunction in women with polycystic ovary syndrome

  • by Liuhua Qu, Lu Li, Ling Yang, Ying Liu

  • July 9, 2026

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