title: [Serological cross-reaction among Bartonella henselae, Chlamydia pneumoniae and Coxiella burnetii by indirect fluorescence antibody method].
abstract: We studied the serological cross-reactions among Bartonella henselae, Chlamydia pneumoniae and Coxiella burnetii by indirect fluorescence antibody (IFA) method, using sera from 8 patients with cat scratch disease (CSD), 13 patients with C. pneumoniae infection and 12 patients with acute Q fever. B. henselae IgG antibody was negative in 13 patients with C. pneumoniae infection, and was positive in 3 (titers being 1:64) of 12 patients with Q fever, whereas B. henselae IgM antibody was negative in all the patients with C. pneumoniae infection or Q fever. C. burnetii IgG antibody was removed by absorption of these 3 sera with C. burnetii antigens, whereas B. henselae IgG antibody did not change. C. pneumoniae IgG antibody was positive in 3 (titers being 1:125 in two, 1:32 in one) of 8 patients with CSD. Both C. pneumoniae and B. henselae IgG antibody titers were significantly reduced by absorption of these 3 sera with B. henselae antigens. C. burnetii IgG or IgM antibodies were negative in all patients with CSD. In conclusion, no serological cross-reaction between B. henselae and C. burnetii was observed. On the other hand. B. henselae IgG antibody cross-reacted to C. pneumoniae antigens, whereas C. pneumoniae IgG antibody did not cross-react to B. henselae antigens. Our findings suggest that determination of B. henselae IgG or IgM antibodies were not influenced by C. pneumoniae and C. burnetii antigens.
authors: Department of Clinical Laboratory, Yamaguchi-ken Kouseiren Nagato General Hospital.
authors: H
authors: H
authors: Tsuneoka
authors: K
authors: K
authors: Ouchi
authors: H
authors: H
authors: Nagaoka
authors: C
authors: C
authors: Ishida
authors: H
authors: H
authors: Iino
authors: K
authors: K
authors: Murakami
authors: K
authors: K
authors: Tsujino
authors: A
authors: A
authors: Umeda
authors: M
authors: M
authors: Tsukahara
mesh_terms: D018416:Bartonella henselae / Q000276:immunology*; D002372:Cat-Scratch Disease / Q000276:immunology; D023521:Chlamydophila Infections / Q000276:immunology; D016993:Chlamydophila pneumoniae / Q000276:immunology*; D016997:Coxiella burnetii / Q000276:immunology*; D003429:Cross Reactions; D019084:Fluorescent Antibody Technique, Indirect; D006801:Humans; D011778:Q Fever / Q000276:immunology