PMID- 12797525 OWN - NLM STAT- MEDLINE DCOM- 20031010 LR - 20190922 IS - 1046-7408 (Print) IS - 1046-7408 (Linking) VI - 49 IP - 3 DP - 2003 Mar TI - Natural killer (NK) cell receptors' repertoire in couples with recurrent spontaneous abortions. PG - 183-91 AB - PROBLEM: Natural killer (NK) cell receptors (NKRs) have been suggested to protect trophoblast, but their function at the fetomaternal interface remains unknown. To investigate if the outcome of pregnancy depends on women's NKRs, we studied the NKR repertoire in couples with recurrent spontaneous abortions (RSA). METHODS: Twenty-six childless couples with > or = 2 abortions, characterized by alloimmune abnormalities, and 26 control couples were genotyped for five killer immunoglobulin-like receptors (KIR) and two CD94/NKG receptors, known to have as ligands human leukocyte antigen (HLA) class I molecules with trophoblastic expression: inhibitory 2DL1,2,3 and activating 2DS1,4 KIRs, inhibitory NKG2A and activating NKG2C. Detected repertoires of women and partners were compared between the two groups. RESULTS: Less aborters than controls were found to have all three inhibitory KIRs (30.77% versus 69.23%, P = 0.01), some of them had only one inhibitory KIR (19.23% versus 3.85%, P = 0.08) and most of them were lacking inhibitory KIRs possessed by their husbands (57.69% versus 15.38%, P = 0.001). CONCLUSIONS: Women with alloimmune abortions have a limited inhibiting KIR repertoire and such miscarriages may occur because trophoblastic HLA class I molecules are recognized by decidual NK cells lacking the appropriate inhibitory KIRs. FAU - Varla-Leftherioti, Marighoula AU - Varla-Leftherioti M AD - Immunology Department and RSA Clinic, Helena Venizelou Maternity Hospital, Athens, Greece. gr1bmdr@hol.gr FAU - Spyropoulou-Vlachou, Maria AU - Spyropoulou-Vlachou M FAU - Niokou, Demetra AU - Niokou D FAU - Keramitsoglou, Theodora AU - Keramitsoglou T FAU - Darlamitsou, Areti AU - Darlamitsou A FAU - Tsekoura, Christina AU - Tsekoura C FAU - Papadimitropoulos, Miltiadis AU - Papadimitropoulos M FAU - Lepage, Virginia AU - Lepage V FAU - Balafoutas, Christos AU - Balafoutas C FAU - Stavropoulos-Giokas, Catherine AU - Stavropoulos-Giokas C LA - eng PT - Comparative Study PT - Journal Article PL - Denmark TA - Am J Reprod Immunol JT - American journal of reproductive immunology (New York, N.Y. : 1989) JID - 8912860 RN - 0 (Antigens, CD) RN - 0 (HLA Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (KLRC1 protein, human) RN - 0 (KLRC2 protein, human) RN - 0 (KLRD1 protein, human) RN - 0 (Lectins, C-Type) RN - 0 (NK Cell Lectin-Like Receptor Subfamily C) RN - 0 (NK Cell Lectin-Like Receptor Subfamily D) RN - 0 (Receptors, Immunologic) RN - 0 (Receptors, KIR) RN - 0 (Receptors, KIR2DL1) RN - 0 (Receptors, Natural Killer Cell) SB - IM MH - Abortion, Habitual/blood/genetics/*immunology MH - Antigens, CD/genetics/metabolism MH - Family Characteristics MH - Female MH - Genotype MH - HLA Antigens/genetics/metabolism MH - Histocompatibility Antigens Class I/genetics/metabolism MH - Humans MH - Killer Cells, Natural/cytology/immunology/*metabolism MH - Lectins, C-Type/genetics/metabolism MH - Male MH - NK Cell Lectin-Like Receptor Subfamily C MH - NK Cell Lectin-Like Receptor Subfamily D MH - Polymerase Chain Reaction/methods MH - Pregnancy MH - Receptors, Immunologic/*genetics/metabolism MH - Receptors, KIR MH - Receptors, KIR2DL1 MH - Receptors, Natural Killer Cell MH - Trophoblasts/immunology/metabolism EDAT- 2003/06/12 05:00 MHDA- 2003/10/11 05:00 CRDT- 2003/06/12 05:00 PHST- 2003/06/12 05:00 [pubmed] PHST- 2003/10/11 05:00 [medline] PHST- 2003/06/12 05:00 [entrez] AID - 10.1034/j.1600-0897.2003.00018.x [doi] PST - ppublish SO - Am J Reprod Immunol. 2003 Mar;49(3):183-91. doi: 10.1034/j.1600-0897.2003.00018.x.