[Determination of IgM antibodies by complement-fixation after serum fractionation by sucrose density gradient in children and adults with evidence of Mycoplasma pneumoniae infection (author's transl)].
Sera from 45 patients with serologic evidence of Mycoplasma pneumoniae infection were fractionated by sucrose gradient centrifugation. The distribution of complement-fixing (CF) antibodies for Mycoplasma pneumoniae within the 19S and the 7S immunoglobulins was determined all patients below 20 years of age and 44% of older patients had 19S specific antibodies. A predominance of 19S relative to 7S CF antibodies was observed in 40% of cases below 20 years and in 18% of cases above 20 years. The meaning of these data is discussed.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000907:Antibodies, Bacterial / Q000032:analysis*; D002499:Centrifugation, Density Gradient; D002648:Child; D002675:Child, Preschool; D003168:Complement Fixation Tests; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis* / Q000302:isolation & purification; D007223:Infant; D008171:Lung Diseases / Q000276:immunology; D008297:Male; D009177:Mycoplasma pneumoniae / Q000276:immunology; D011019:Pneumonia, Mycoplasma / Q000276:immunology*
D000907:Antibodies, Bacterial; D007074:Immunoglobulin G; D007075:Immunoglobulin M
Recherche des anticorps de type IgM après fractionnement des sérums sur gradient de saccharose chez l'enfant et chez l'adulte suspects d'infection a Mycoplasma pneumoniae.