Complement C6 and C7 polymorphisms in Japanese patients with chronic glomerulonephritis. 1989

H Nishimukai, and I Nakanishi, and Y Takeuchi, and R Sumiyoshi, and K Mizutani, and N Iida, and T Shinomiya
Department of Legal Medicine, School of Medicine, Ehime University, Japan.

C6 and C7 types were studied in 158 Japanese patients with different types of chronic glomerulonephritis: 75 patients with IgA nephropathy (IgA-N); 49 patients with idiopathic membranous nephropathy (IMN), and 34 patients with minimal-change nephrotic syndrome (MCNS). There were significant differences in the C6 and C7 allele and phenotype frequencies between the patient groups and controls. A strong association was found between IgA-N and C7 5 phenotype (p less than 0.001, RR = 12.71), and between MCNS and C7 5 phenotype (p less than 0.001, RR = 14.20). A significant association between MCNS and C6 B2 phenotype (p less than 0.05, RR = 2.42) was also found. In the IMN patient group, a significant association with C7 4 phenotype (p less than 0.05, RR = 2.42) was observed. Thus, C6 and C7 phenotypes may be causative factors in the development of chronic glomerulonephritis.

UI MeSH Term Description Entries
D007564 Japan A country in eastern Asia, island chain between the North Pacific Ocean and the Sea of Japan, east of the Korean Peninsula. The capital is Tokyo. Bonin Islands
D009402 Nephrosis, Lipoid A kidney disease with no or minimal histological glomerular changes on light microscopy and with no immune deposits. It is characterized by lipid accumulation in the epithelial cells of KIDNEY TUBULES and in the URINE. Patients usually show NEPHROTIC SYNDROME indicating the presence of PROTEINURIA with accompanying EDEMA. Glomerulonephritis, Minimal Change,Glomerulopathy, Minimal Change,Nephropathy, Minimal Change,Nephrotic Syndrome, Minimal Change,Idiopathic Minimal Change Nephrotic Syndrome,Minimal Change Disease,Minimal Change Glomerulopathy,Minimal Change Nephrotic Syndrome,Change Diseases, Minimal,Disease, Minimal Change,Diseases, Minimal Change,Glomerulonephritides, Minimal Change,Glomerulopathies, Minimal Change,Lipoid Nephroses,Lipoid Nephrosis,Minimal Change Diseases,Minimal Change Glomerulonephritides,Minimal Change Glomerulonephritis,Minimal Change Nephropathies,Minimal Change Nephropathy,Nephropathies, Minimal Change,Nephroses, Lipoid
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D011110 Polymorphism, Genetic The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level. Gene Polymorphism,Genetic Polymorphism,Polymorphism (Genetics),Genetic Polymorphisms,Gene Polymorphisms,Polymorphism, Gene,Polymorphisms (Genetics),Polymorphisms, Gene,Polymorphisms, Genetic
D003183 Complement C6 A 105-kDa serum glycoprotein with significant homology to the other late complement components, C7-C9. It is a polypeptide chain cross-linked by 32 disulfide bonds. C6 is the next complement component to bind to the membrane-bound COMPLEMENT C5B in the assembly of MEMBRANE ATTACK COMPLEX. It is encoded by gene C6. C6 Complement,Complement 6,Complement Component 6,C6, Complement,Complement, C6,Component 6, Complement
D003184 Complement C7 A 93-kDa serum glycoprotein encoded by C7 gene. It is a polypeptide chain with 28 disulfide bridges. In the formation of MEMBRANE ATTACK COMPLEX; C7 is the next component to bind the C5b-6 complex forming a trimolecular complex C5b-7 which is lipophilic, resembles an integral membrane protein, and serves as an anchor for the late complement components, C8 and C9. C7 Complement,Complement 7,Complement Component 7,C7, Complement,Complement, C7,Component 7, Complement
D005787 Gene Frequency The proportion of one particular in the total of all ALLELES for one genetic locus in a breeding POPULATION. Allele Frequency,Genetic Equilibrium,Equilibrium, Genetic,Allele Frequencies,Frequencies, Allele,Frequencies, Gene,Frequency, Allele,Frequency, Gene,Gene Frequencies
D005922 Glomerulonephritis, IGA A chronic form of glomerulonephritis characterized by deposits of predominantly IMMUNOGLOBULIN A in the mesangial area (GLOMERULAR MESANGIUM). Deposits of COMPLEMENT C3 and IMMUNOGLOBULIN G are also often found. Clinical features may progress from asymptomatic HEMATURIA to END-STAGE KIDNEY DISEASE. Berger Disease,Immunoglobulin A Nephropathy,Nephropathy, IGA,Berger's Disease,IGA Glomerulonephritis,IGA Nephropathy,Iga Nephropathy 1,Nephritis, IGA Type,Bergers Disease,Glomerulonephritides, IGA,IGA Type Nephritis,Nephropathy 1, Iga,Nephropathy, Immunoglobulin A
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015433 Glomerulonephritis, Membranous A type of glomerulonephritis that is characterized by the accumulation of immune deposits (COMPLEMENT MEMBRANE ATTACK COMPLEX) on the outer aspect of the GLOMERULAR BASEMENT MEMBRANE. It progresses from subepithelial dense deposits, to basement membrane reaction and eventual thickening of the basement membrane. Heymann Nephritis,Membranous Glomerulopathy,Nephropathy, Membranous,Extramembranous Glomerulopathy,Idiopathic Membranous Glomerulonephritis,Idiopathic Membranous Nephropathy,Membranous Glomerulonephropathy,Membranous Nephropathy,Glomerulonephritides, Idiopathic Membranous,Glomerulonephritides, Membranous,Glomerulonephritis, Idiopathic Membranous,Glomerulonephropathy, Membranous,Glomerulopathy, Extramembranous,Glomerulopathy, Membranous,Idiopathic Membranous Glomerulonephritides,Membranous Glomerulonephritides,Membranous Glomerulonephritides, Idiopathic,Membranous Glomerulonephritis,Membranous Glomerulonephritis, Idiopathic,Membranous Nephropathy, Idiopathic,Nephritis, Heymann,Nephropathy, Idiopathic Membranous

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