Peritoneal fluid concentrations of interleukin-4 in relation to the presence of endometriosis, its stage and the phase of the menstrual cycle

Observational OA: bronze CC0 ⤵ 9 in-corpus citations
⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-06-09 ⓘ

This study measured peritoneal fluid IL-4 concentrations in women with and without endometriosis, finding no association with the disease, its stage, or menstrual cycle phase.

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Abstract

BACKGROUND: Interleukin-4 (IL-4) is a cytokine with both stimulatory and inhibitory effects on the inflammatory system such as macrophage inhibition and T-cell activation. It is known to regulate several monocyte functions, including inhibition of the synthesis of cytokines such as IL-1, IL-6 and TNF-alpha as well as potentiating IL-8. METHOD: In an attempt to clarify the association between IL-4 and endometriosis, we measured the concentration of IL-4 in the peritoneal fluid of 52 women; 24 with endometriosis and 28 with no endometriosis, controlling for the phase of the cycle and the stage of disease. RESULTS: There was no difference in the concentrations of IL-4 between women with (n=28) and without endometriosis (n=24). No difference was found between the IL-4 concentrations in women with different stages of endometriosis. Levels of IL-4 did not show a difference according to the phase of the cycle in either group. CONCLUSION: Our results indicate no association between peritoneal fluid levels of IL-4 and endometriosis and hence suggest that IL-4 is not involved in the pathogenesis of endometriosis.

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Condition tags

endometriosis

MeSH descriptors

Ascitic Fluid Endometriosis Interleukin-4 Menstrual Cycle Ascitic Fluid Ascitic Fluid Endometriosis Endometriosis Female Female Follicular Phase Follicular Phase Follicular Phase Humans Humans Interleukin-4 Interleukin-4 Interleukin-4 Luteal Phase Luteal Phase

Citation neighborhood (2-hop)

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. Outer rings show 2-hop neighbours — papers reached through the immediate citers/citees. [ collapse to 1-hop ]

References (13)

Cited by (9)

Source provenance

europepmc
last seen: 2026-10-14T06:08:39.101224+00:00
openalex
last seen: 2026-06-10T17:14:06.276822+00:00
pubmed
last seen: 2026-10-08T20:59:53.382863+00:00
License: CC0 · commercial use OK