title: [Effect of the method of extracorporeal heparin precipitation of plasma proteins (selective plasmapheresis) on the level of immune complexes in the blood].
abstract: A study was made of the effect of selective plasmapheresis (SPP) on the concentration of circulating immune complexes (CIC). The method is based on precipitation at 4 degrees C of plasma fibronectin and associated macromolecular complexes by means of heparin. Sterile plasma of the patient is separated from the precipitate, frozen and kept at -20 degrees C till the next plasmapheresis during which it is returned to the patient instead of the donor's one. All 15 patients examined were exposed to 6 SPP with an interval made every 2 to 5 days. Six patients were diagnosed to have rheumatoid arthritis, 2 systemic lupus erythematosus, 3 hemorrhagic microthrombovasculitis, and 4 multiple sclerosis. The concentration of CIC was measured by precipitation with 3.5% polyethylene glycol before and after SPP, in some cases between sessions. All the patients with rheumatoid arthritis and systemic lupus erythematosus and 2 out of the 3 patients with hemorrhagic vasculitis showed an elevated content of CIC (greater than 0.150 Units OD). The CIC content appeared normal in all the patients with multiple sclerosis. After SPP 4 patients manifested a reduction in the CIC concentration, whereas in 6 it returned to normal. Such a time course correlated with the improvement of other clinical and laboratory findings. It was established that after the first session of SPP the CIC content sharply declined followed by a gradual increment and exceeded the initial values toward the beginning of the second session. After the second SPP the patients manifested the same tendencies. The CIC content reached a maximum by the third SPP and then fell from session to session.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.forename: V G
authors.initials: VG
authors.lastname: Savchenko
authors.forename: E Ia
authors.initials: EIa
authors.lastname: Margulis
authors.forename: S A
authors.initials: SA
authors.lastname: Vasiliev
authors.forename: V M
authors.initials: VM
authors.lastname: Gorodetskiĭ
authors.forename: V V
authors.initials: VV
authors.lastname: Ryzhko
mesh_terms: D000293:Adolescent; D000328:Adult; D000936:Antigen-Antibody Complex / Q000032:analysis*; D011232:Chemical Precipitation; D003095:Collagen Diseases / Q000628:therapy; D005260:Female; D005353:Fibronectins / Q000097:blood*; D005615:Freezing; D006493:Heparin / Q000494:pharmacology; D006801:Humans; D011695:IgA Vasculitis / Q000628:therapy; D007105:Immune Complex Diseases / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000628:therapy; D010956:Plasmapheresis / Q000379:methods*
chemical_list: D000936:Antigen-Antibody Complex; D005353:Fibronectins; D006493:Heparin
vernacular_title: Vliianie metoda ekstrakorporel'noĭ geparinopretsipitatsii plazmennykh belkov (selektivnogo plazmafereza) na kontsentratsiiu immunnykh kompleksov v krovi.