Aberrant expression of intercellular adhesion molecule-1 and killer inhibitory receptors induces immune tolerance in women with pelvic endometriosis

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This study investigated how abnormal expression of ICAM-1 and KIR contributes to immune tolerance in women with pelvic endometriosis.

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Abstract

OBJECTIVE: To investigate host immunologic response to endometriosis in terms of intercellular adhesion molecule (ICAM)-1 expression by macrophages and killer cell inhibitory receptor (KIR) expression by natural killer (NK) cells. DESIGN: Case-control study of immunologic markers. SETTING: University hospital. PATIENT(S): Twenty-eight Japanese women with endometriosis. Control subjects were 26 women without endometriosis. Diagnoses were made at laparoscopy. INTERVENTION(S): Venipuncture and laparoscopic peritoneal fluid collection. MAIN OUTCOME MEASURE(S): ICAM-1 expression by macrophages and KIR expression by NK cells, measured by flow cytometry. RESULT(S): In women with endometriosis, expression of ICAM-1 by peritoneal macrophages was significantly lower and expression of KIR by NK cells in peritoneal fluid and peripheral blood was significantly higher than in control subjects. CONCLUSION(S): Properties of macrophages and NK cells in women with endometriosis promote immunotolerance to implanted tissue in the peritoneal environment. Increased KIR(+)NK cells in peripheral blood may represent a risk factor for endometriosis.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Immune Tolerance Immune Tolerance Intercellular Adhesion Molecule-1 Receptors, Immunologic Adult Adult Antibodies, Monoclonal Antibodies, Monoclonal Ascitic Fluid Ascitic Fluid Ascitic Fluid B-Lymphocytes B-Lymphocytes Case-Control Studies Case-Control Studies Endometriosis Endometriosis Endometriosis Female

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 (30)

Cited by (49)

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: 2026-10-08T21:00:24.492322+00:00
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