title: Activation of complement by circulating immune complexes isolated from leprosy patients.
abstract: Circulating immune complexes isolated from different types of leprosy sera as polyethylene glycol (PEG) precipitates were found to be efficient activators of the alternative pathway of complement. PEG precipitates from BL/LL leprosy patients and those with erythema nodosum leprosum were found to activate both the classical pathway and the alternative pathway of complement efficiently, while PEG precipitates from TT/BT leprosy patients and borderline tuberculoid patients in reaction were found to active the alternative pathway of complement but not the classical pathway. No significant differences were observed between the PEG precipitates from reactional and nonreactional TT/BT and BL/LL patients in their complement activating ability.
authors.affiliation: Central JALMA Institute for Leprosy, Taj Ganj, Agra, India.
authors.forename: P
authors.initials: P
authors.lastname: Tyagi
authors.forename: V D
authors.initials: VD
authors.lastname: Ramanathan
authors.forename: B K
authors.initials: BK
authors.lastname: Girdhar
authors.forename: K
authors.initials: K
authors.lastname: Katoch
authors.forename: A S
authors.initials: AS
authors.lastname: Bhatia
authors.forename: U
authors.initials: U
authors.lastname: Sengupta
mesh_terms: D000936:Antigen-Antibody Complex / Q000097:blood / Q000276:immunology*; D001798:Blood Proteins / Q000032:analysis; D011232:Chemical Precipitation; D003167:Complement Activation / Q000276:immunology*; D015941:Complement Hemolytic Activity Assay; D003170:Complement Pathway, Alternative; D004893:Erythema Nodosum / Q000276:immunology; D006801:Humans; D007918:Leprosy / Q000276:immunology*; D015439:Leprosy, Borderline / Q000276:immunology; D015440:Leprosy, Lepromatous / Q000276:immunology; D015441:Leprosy, Tuberculoid / Q000276:immunology; D011092:Polyethylene Glycols
chemical_list: D000936:Antigen-Antibody Complex; D001798:Blood Proteins; D011092:Polyethylene Glycols