title: Transient monoclonal gammopathy in a patient with Bartonella quintana endocarditis.
abstract: Monoclonal gammopathy has been reported rarely in association with infectious diseases. Viral infection has been the most frequently reported. We report a case of Bartonella quintana endocarditis in a 45-year-old homeless male associated with a monoclonal IgG kappa gammopathy. The gammopathy disappeared after 8 months of antibiotics while the Bartonella antibody titre was decreasing. This correlation suggests a causative role for B. quintana for the monoclonal gammopathy. To the best of our knowledge, this the first report of monoclonal gammopathy in the course of B. quintana infection.
authors.affiliation: Department of Internal Medicine, Lyon-Sud Faculty of Medicine, Claude Bernard Lyon I University, Lyon, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Sève
authors.forename: Robert
authors.initials: R
authors.lastname: Turner
authors.forename: Katia
authors.initials: K
authors.lastname: Stankovic
authors.forename: Laurent
authors.initials: L
authors.lastname: Perard
authors.forename: Christiane
authors.initials: C
authors.lastname: Broussolle
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D018413:Bartonella quintana; D004696:Endocarditis / Q000188:drug therapy / Q000209:etiology / Q000382:microbiology*; D006703:Ill-Housed Persons; D006801:Humans; D008297:Male; D008875:Middle Aged; D010265:Paraproteinemias / Q000188:drug therapy / Q000209:etiology / Q000382:microbiology*; D012074:Remission Induction
chemical_list: D000900:Anti-Bacterial Agents