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Association of the interferon-gamma receptor variant (Val14Met) with systemic lupus erythematosus. 1999

Y Tanaka, and H Nakashima, and C Hisano, and T Kohsaka, and Y Nemoto, and H Niiro, and T Otsuka, and T Otsuka, and T Imamura, and Y Niho
First Department of Internal Medicine, Faculty of Medicine, Kyushu University, Fukuoka 812-8582, Japan.

Genetic factors seem to play a significant role in susceptibility to systemic lupus erythematosus (SLE). The purpose of this study was to investigate whether the amino acid polymorphism (Val14Met) found within the IFN-gamma receptor gene (IFNGR1) plays a prominent role in susceptibility to SLE. We found Val14Met located at the COOH terminal of the signal peptide of the IFN-gamma receptor. There was a significant difference in this polymorphism frequency between SLE patients and healthy populations. To clarify whether this amino acid substitution resulted in the alteration of the receptor function, we evaluated the induction of HLA-DR antigen expression on B cells by IFN-gamma stimulation. There was also a significant difference in the induction of HLA-DR by IFN-gamma stimulation between B cells. Furthermore, an intracellular cytokine assay indicated that the Th1/Th2 balance of Th cells bearing the variant receptor shifted to Th2. The genetic polymorphism found within the IFN-gamma receptor gene (Val14Met) may result in a shift to Th2, and this shift may increase susceptibility to SLE.

UI MeSH Term Description Entries
D007371 Interferon-gamma The major interferon produced by mitogenically or antigenically stimulated LYMPHOCYTES. It is structurally different from TYPE I INTERFERON and its major activity is immunoregulation. It has been implicated in the expression of CLASS II HISTOCOMPATIBILITY ANTIGENS in cells that do not normally produce them, leading to AUTOIMMUNE DISEASES. Interferon Type II,Interferon, Immune,gamma-Interferon,Interferon, gamma,Type II Interferon,Immune Interferon,Interferon, Type II
D008180 Lupus Erythematosus, Systemic A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterized principally by involvement of the skin, joints, kidneys, and serosal membranes. It is of unknown etiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide range of system dysfunctions, an elevated erythrocyte sedimentation rate, and the formation of LE cells in the blood or bone marrow. Libman-Sacks Disease,Lupus Erythematosus Disseminatus,Systemic Lupus Erythematosus,Disease, Libman-Sacks,Libman Sacks Disease
D008297 Male Males
D008715 Methionine A sulfur-containing essential L-amino acid that is important in many body functions. L-Methionine,Liquimeth,Methionine, L-Isomer,Pedameth,L-Isomer Methionine,Methionine, L Isomer
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000096743 Interferon gamma Receptor A heterodimeric receptor composed of two subunits IFNGR1 and IFNGR2. Activated IFNGR1 subunit is believed to form a docking site for SIGNAL TRANSDUCER AND ACTIVATOR OF TRANSCRIPTION 1 (STAT1). IFNGR2 associates with IFNGR1 to form a receptor for the cytokine interferon gamma (IFNG). CD119 Antigen,CDw119 Antigen,IFN-gamma Receptor 1,IFNGR2 Protein,Interferon gamma Receptor 2,Interferon gamma Receptors,Receptor, Interferon gamma,IFN-gammaR,1, IFN-gamma Receptor,Antigen, CD119,Antigen, CDw119,IFN gamma Receptor 1,IFN gammaR,Protein, IFNGR2,Receptor 1, IFN-gamma,Receptors, Interferon gamma,gamma Receptor, Interferon,gamma Receptors, Interferon
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths

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