HLA class Ib in pregnancy and pregnancy-related disorders. 2017

Gry Persson, and Wenna Nascimento Melsted, and Line Lynge Nilsson, and Thomas Vauvert F Hviid
Department of Clinical Biochemistry, Centre for Immune Regulation and Reproductive Immunology (CIRRI), Zealand University Hospital, 10 Sygehusvej, 4000, Roskilde, Denmark.

The HLA class Ib genes, HLA-E, HLA-F, and HLA-G, were discovered long after the classical HLA class Ia genes. The elucidation of their functions had a modest beginning. However, their basic functions and involvement in pathophysiology and a range of diseases are now emerging. Although results from a range of studies support the functional roles for the HLA class Ib molecules in adult life, especially HLA-G and HLA-F have most intensively been, and were also primarily, studied in relation to reproduction and pregnancy. The expression of HLA class Ib proteins at the feto-maternal interface in the placenta seems to be important for the maternal acceptance of the semi-allogenic fetus. In contrast to the functions of HLA class Ia, HLA-G possesses immune-modulatory and tolerogenic functions. Here, we review an accumulating amount of data describing the functions of HLA class Ib molecules in relation to fertility, reproduction, and pregnancy, and a possible role for these molecules in certain pregnancy complications, such as implantation failure, recurrent spontaneous abortions, and pre-eclampsia. The results from different kinds of studies point toward a role for HLA class Ib, especially HLA-G, throughout the reproductive cycle from conception to the birth weight of the child.

UI MeSH Term Description Entries
D011225 Pre-Eclampsia A complication of PREGNANCY, characterized by a complex of symptoms including maternal HYPERTENSION and PROTEINURIA with or without pathological EDEMA. Symptoms may range between mild and severe. Pre-eclampsia usually occurs after the 20th week of gestation, but may develop before this time in the presence of trophoblastic disease. Toxemias, Pregnancy,EPH Complex,EPH Gestosis,EPH Toxemias,Edema-Proteinuria-Hypertension Gestosis,Gestosis, EPH,Hypertension-Edema-Proteinuria Gestosis,Preeclampsia,Preeclampsia Eclampsia 1,Pregnancy Toxemias,Proteinuria-Edema-Hypertension Gestosis,Toxemia Of Pregnancy,1, Preeclampsia Eclampsia,1s, Preeclampsia Eclampsia,EPH Toxemia,Eclampsia 1, Preeclampsia,Eclampsia 1s, Preeclampsia,Edema Proteinuria Hypertension Gestosis,Gestosis, Edema-Proteinuria-Hypertension,Gestosis, Hypertension-Edema-Proteinuria,Gestosis, Proteinuria-Edema-Hypertension,Hypertension Edema Proteinuria Gestosis,Of Pregnancies, Toxemia,Of Pregnancy, Toxemia,Pre Eclampsia,Preeclampsia Eclampsia 1s,Pregnancies, Toxemia Of,Pregnancy Toxemia,Pregnancy, Toxemia Of,Proteinuria Edema Hypertension Gestosis,Toxemia Of Pregnancies,Toxemia, EPH,Toxemia, Pregnancy,Toxemias, EPH
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D005260 Female Females
D005298 Fertility The capacity to conceive or to induce conception. It may refer to either the male or female. Fecundity,Below Replacement Fertility,Differential Fertility,Fecundability,Fertility Determinants,Fertility Incentives,Fertility Preferences,Fertility, Below Replacement,Marital Fertility,Natural Fertility,Subfecundity,World Fertility Survey,Determinant, Fertility,Determinants, Fertility,Fertility Determinant,Fertility Incentive,Fertility Preference,Fertility Survey, World,Fertility Surveys, World,Fertility, Differential,Fertility, Marital,Fertility, Natural,Preference, Fertility,Preferences, Fertility,Survey, World Fertility,Surveys, World Fertility,World Fertility Surveys
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000026 Abortion, Habitual Three or more consecutive spontaneous abortions. Abortion, Recurrent,Miscarriage, Recurrent,Recurrent Early Pregnancy Loss,Habitual Abortion,Habitual Abortions,Recurrent Abortion,Recurrent Abortions,Recurrent Miscarriage,Recurrent Miscarriages
D000097625 HLA-E Antigens Class I human histocompatibility (HLA) antigens encoded by genes at the E locus on chromosome 6. They bind a restricted subset of peptides derived from the leader peptides of other class I molecules. They primarily are involved with down-regulating cytolytic activity of NK CELLS and restricting non-canonical CD8-POSITIVE T LYMPHOCYTES. HLA E Antigens,HLA E*0101 antigen,HLA-E 0103 antigen,HLA-E*0101 antigen,HLA-E*0103,HLA-E*01:01 antigen,HLA-E*01:03 antigen
D015395 Histocompatibility Antigens Class I Membrane glycoproteins consisting of an alpha subunit and a BETA 2-MICROGLOBULIN beta subunit. In humans, highly polymorphic genes on CHROMOSOME 6 encode the alpha subunits of class I antigens and play an important role in determining the serological specificity of the surface antigen. Class I antigens are found on most nucleated cells and are generally detected by their reactivity with alloantisera. These antigens are recognized during GRAFT REJECTION and restrict cell-mediated lysis of virus-infected cells. Class I Antigen,Class I Antigens,Class I Histocompatibility Antigen,Class I MHC Protein,Class I Major Histocompatibility Antigen,MHC Class I Molecule,MHC-I Peptide,Class I Histocompatibility Antigens,Class I Human Antigens,Class I MHC Proteins,Class I Major Histocompatibility Antigens,Class I Major Histocompatibility Molecules,Human Class I Antigens,MHC Class I Molecules,MHC-I Molecules,MHC-I Peptides,Antigen, Class I,Antigens, Class I,I Antigen, Class,MHC I Molecules,MHC I Peptide,MHC I Peptides,Molecules, MHC-I,Peptide, MHC-I,Peptides, MHC-I
D059951 HLA-G Antigens Class I human histocompatibility (HLA) surface antigens encoded by alleles on locus B of the HLA complex. The HLA-G antigens are considered non-classical class I antigens due to their distinct tissue distribution which differs from HLA-A; HLA-B; and HLA-C antigens. Note that several isoforms of HLA-G antigens result from alternative splicing of messenger RNAs produced from the HLA-G*01 allele. HLA G,HLA-G,HLA-G Antigen,HLA-G1,HLA-G1 Isoform,HLA-G2,HLA-G2 Isoform,HLA-G3,HLA-G3 Isoform,HLA-G4,HLA-G4 Isoform,HLA-G5,HLA-G5 Isoform,HLA-G6,HLA-G6 Isoform,HLA-G7,HLA-G7 Antigen,HLA-G7 Isoform,Antigen, HLA-G,Antigen, HLA-G7,Antigens, HLA-G,HLA G Antigen,HLA G Antigens,HLA G1 Isoform,HLA G2 Isoform,HLA G3 Isoform,HLA G6 Isoform,HLA G7 Antigen,HLA G7 Isoform,Isoform, HLA-G4,Isoform, HLA-G6,Isoform, HLA-G7
D027724 Reproductive Techniques, Assisted Clinical and laboratory techniques used to enhance fertility in humans and animals. Reproductive Technology, Assisted,Assisted Reproductive Technics,Assisted Reproductive Techniques,Assisted Reproductive Technic,Assisted Reproductive Technique,Assisted Reproductive Technologies,Assisted Reproductive Technology,Reproductive Technic, Assisted,Reproductive Technics, Assisted,Reproductive Technique, Assisted,Reproductive Technologies, Assisted,Technic, Assisted Reproductive,Technics, Assisted Reproductive,Technique, Assisted Reproductive,Techniques, Assisted Reproductive,Technologies, Assisted Reproductive,Technology, Assisted Reproductive

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