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- W37300241 abstract "In this study we evaluated pathogenetic factors and possible mediators of renal and systemic disorders where immunologic mechanisms might be of importance.An abberant immunoglobulin and IgG-subclass distribution was detected in 103 patients with primary and secondary glomerulonephritis as well as in 38 patients with the systemic disease primary Sjogren 's syndrome or purpura hypergammaglobulinemica (elevated IgG1 and low IgG2 ).The drug hydralazine, an anti-hypertensive, was considered to cause renal disease on an immunologic base in 17 patients, with autoantibody production (mainly ANA and antibodies to myeloperoxidase).Dialysis-patients showed adequate antibody responses to vaccination against pneumococci but low responses against hepatitis B, while the IgG-subclass response of the hepatitis B antibody (anti-HBs) was low, but not shown to be significantly different from that of healthy adults.A therapeutical removal of igG-antibodies with immunoadsorption or plasmapheresis was considered to have a possible adjuvant effect to medical immunosuppressive treatment alone in 44 patients with rapidly progressive glomerulonephritis.Hepatitis C virus (HCV) is common in dialysis patients and renal transplant recipients. In 20 anti-HCV positive sera from 1988-91 recombinant immunoblott assay (RIBA) was positive in 8 cases and indeterminate in 7, while HCV RNA was present in 13/20 tested sera. In October 1991 17% of our hemodialysis patients were verified or suspected carriers while 11% were verified or suspected carriers in January 1997. Genotype 2b was found in 13/24 tested cases and in 7 amplifiable 2b sequences a strong phylogenetic relationship occurred. In 8 out of 12 RIBA-3 indeterminate sera HCV-RNA was still positive. Awareness and preventive measures limited transmission between patients.Indeterminate RlBA-results should, also with modem assays, be regarded with caution due to the relative immunodeficiency of uremic patients.In conclusion renal and systemic diseases may affect the serum immunoglobulins and immunoglobulin G-subclasses, while a study of the specific antibody subclass distributions (anti-HBs) showed no difference in renal (dialysis) patients and healthy adults. Medication (hydralazine) and infection may be triggering factors of various forms of glomerulonephritis. Uremia affects the antibody responses to hepatitis C in dialysis patients. The extent of renal disease as well as the possibility of therapeutic removal of antibodies is also important for the immunologic responses of such disorders." @default.
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- W37300241 date "2012-01-01" @default.
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- W37300241 title "The Immunoglobulin G Subclass Response to Hepatitis B Vaccine and the Antibody Response to Pneumococcal Polysaccharides in Dialysis Patients" @default.
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