PMID- 15373761 OWN - NLM STAT- MEDLINE DCOM- 20050304 LR - 20111117 IS - 1046-7408 (Print) IS - 1046-7408 (Linking) VI - 52 IP - 3 DP - 2004 Sep TI - HLA-G expression in placenta in relation to HLA-G genotype and polymorphisms. PG - 212-7 AB - PROBLEM: The expression of the non-classical human leukocyte antigen (HLA) class Ib gene, HLA-G, seems to be important at the feto-maternal interface. The HLA-G molecule is almost monomorphic and expressed in both membrane-bound and soluble isoforms. It has been shown to inhibit natural killer cell -mediated lysis and influence cytokine expression. HLA-G gene polymorphism has been linked to differences in gene expression profile of alternatively spliced HLA-G transcripts and levels of specific HLA-G messenger RNA (mRNA) isoforms. Furthermore, aberrant HLA-G expression has been reported in preeclamptic placentas. On this background it is of general interest to further elucidate any associations between HLA-G polymorphism and protein expression. METHODS: We have investigated HLA-G protein expression by immunohistochemistry in HLA-G genotyped placentas from term. HLA-G mRNA expression in preeclamptic placentas and in control placentas was also studied by microarray technology. RESULTS AND CONCLUSIONS: The studies of HLA-G protein expression in term placentas by immunohistochemical analysis showed no clear associations with HLA-G genotypes although this could be because of the very semi-quantitative nature of this technique. However, we found a tendency towards reduction of HLA-G mRNA expression in placentas from preeclamptic cases compared to matched controls with the use of microarray technology. FAU - Hviid, Thomas Vauvert F AU - Hviid TV AD - Department of Clinical Biochemistry, Copenhagen University Hospital, Rigshospitalet, Copenhagen O, Denmark. hviid@dadlnet.dk FAU - Larsen, Lise Grupe AU - Larsen LG FAU - Hoegh, Anne Mette AU - Hoegh AM FAU - Bzorek, Michael AU - Bzorek M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Am J Reprod Immunol JT - American journal of reproductive immunology (New York, N.Y. : 1989) JID - 8912860 RN - 0 (HLA Antigens) RN - 0 (HLA-G Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (RNA, Messenger) SB - IM MH - Biopsy MH - Female MH - Genotype MH - HLA Antigens/*genetics/*metabolism MH - HLA-G Antigens MH - Histocompatibility Antigens Class I/*genetics/*metabolism MH - Humans MH - Immunohistochemistry MH - Oligonucleotide Array Sequence Analysis MH - Placenta/*metabolism MH - Polymorphism, Genetic/*genetics MH - Pre-Eclampsia/genetics MH - Pregnancy MH - Pregnancy Trimester, Third/genetics MH - RNA, Messenger/genetics/metabolism EDAT- 2004/09/18 05:00 MHDA- 2005/03/05 09:00 CRDT- 2004/09/18 05:00 PHST- 2004/09/18 05:00 [pubmed] PHST- 2005/03/05 09:00 [medline] PHST- 2004/09/18 05:00 [entrez] AID - AJI208 [pii] AID - 10.1111/j.1600-0897.2004.00208.x [doi] PST - ppublish SO - Am J Reprod Immunol. 2004 Sep;52(3):212-7. doi: 10.1111/j.1600-0897.2004.00208.x.