title: Identification of protein candidates for the serodiagnosis of Q fever endocarditis by an immunoproteomic approach.
abstract: Q fever is a worldwide zoonosis caused by Coxiella burnetii bacterium. Two clinical forms are present: acute Q fever and chronic disease, including endocarditis. Currently, the diagnosis of Q fever endocarditis is based on the detection of anti-phase I antibodies. The objective of the study was to identify candidate proteins for the serological diagnosis of endocarditis due to C. burnetii. The immunoreactivities of sera from 12 patients with C. burnetii infections, including the sera from patients with endocarditis and with the acute clinical form of Q fever, were compared with those of three control subjects who did not have Q fever. We identified 29 candidate antigenic proteins by mass spectrometry. Two proteins, arginine repressor and OmpH, were recognised exclusively by the sera of patients with Q fever endocarditis. These proteins are promising candidates for the development of serodiagnostic assays for Q fever endocarditis.
authors.affiliation: Faculté de Médecine, Université de la Méditerranée, URMITE 6236 IRD, IFR 48, 27 Boulevard Jean Moulin, 05 13385 Marseille Cedex, France.
authors.forename: Z
authors.initials: Z
authors.lastname: Sekeyová
authors.forename: M
authors.initials: M
authors.lastname: Kowalczewska
authors.forename: P
authors.initials: P
authors.lastname: Decloquement
authors.forename: N
authors.initials: N
authors.lastname: Pelletier
authors.forename: E
authors.initials: E
authors.lastname: Spitalská
authors.forename: D
authors.initials: D
authors.lastname: Raoult
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000907:Antibodies, Bacterial / Q000097:blood; D000942:Antigens, Bacterial / Q000737:chemistry / Q000276:immunology*; D001425:Bacterial Outer Membrane Proteins / Q000737:chemistry / Q000276:immunology; D001426:Bacterial Proteins / Q000737:chemistry / Q000276:immunology; D016997:Coxiella burnetii / Q000737:chemistry / Q000276:immunology*; D004697:Endocarditis, Bacterial / Q000175:diagnosis* / Q000382:microbiology*; D005260:Female; D006801:Humans; D008297:Male; D013058:Mass Spectrometry; D008875:Middle Aged; D011778:Q Fever / Q000150:complications* / Q000175:diagnosis* / Q000276:immunology; D012097:Repressor Proteins / Q000737:chemistry / Q000276:immunology; D012698:Serologic Tests; D055815:Young Adult
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; C087018:ArgR protein, Bacteria; D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D012097:Repressor Proteins; C067128:ompH protein, bacteria
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