title: Detection and serotype distribution of Actinobacillus actinomycetemcomitans in cardiovascular specimens from Japanese patients.
abstract: Actinobacillus actinomycetemcomitans, an important pathogen in periodontitis, has also been detected in cardiovascular tissues. Sixty heart valves were collected during valve replacement surgery from 60 patients (one from each), 10 were from patients with infective endocarditis (IE group) and 50 were from patients with other valvular diseases (non-IE group). In addition, 46 samples of aneurysmal tissue were taken from 46 patients with a thoracic or abdominal aneurysm (Aneurysm group, one from each). Dental plaque samples were taken from 54 of the patients, 31 in the IE and non-IE groups and 23 in the aneurysm group. First, the distribution of A. actinomycetemcomitans in all specimens was analysed using a polymerase chain reaction method, which resulted in a positive reaction in 33 (31.1%) of the cardiovascular specimens and 25 (46.3%) of the dental plaque samples. Next, using serotype-specific sets of primers, the serotype distribution of A. actinomycetemcomitans in the cardiovascular specimens and dental plaque samples was found to be significantly different compared to dental plaque samples from Japanese subjects reported previously.
authors.affiliation: Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nakano
authors.forename: H
authors.initials: H
authors.lastname: Inaba
authors.forename: R
authors.initials: R
authors.lastname: Nomura
authors.forename: H
authors.initials: H
authors.lastname: Nemoto
authors.forename: K
authors.initials: K
authors.lastname: Tamura
authors.forename: E
authors.initials: E
authors.lastname: Miyamoto
authors.forename: H
authors.initials: H
authors.lastname: Yoshioka
authors.forename: K
authors.initials: K
authors.lastname: Taniguchi
authors.forename: A
authors.initials: A
authors.lastname: Amano
authors.forename: T
authors.initials: T
authors.lastname: Ooshima
mesh_terms: D000189:Actinobacillus Infections / Q000453:epidemiology / Q000382:microbiology; D016976:Aggregatibacter actinomycetemcomitans / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D017544:Aortic Aneurysm, Abdominal / Q000453:epidemiology / Q000382:microbiology; D017545:Aortic Aneurysm, Thoracic / Q000453:epidemiology / Q000382:microbiology; D050197:Atherosclerosis / Q000453:epidemiology / Q000382:microbiology; D053821:Cardiovascular Infections / Q000453:epidemiology / Q000382:microbiology*; D002681:China / Q000453:epidemiology; D004269:DNA, Bacterial / Q000032:analysis; D003773:Dental Plaque / Q000453:epidemiology / Q000382:microbiology*; D004697:Endocarditis, Bacterial / Q000453:epidemiology / Q000382:microbiology; D006349:Heart Valve Diseases / Q000453:epidemiology / Q000382:microbiology; D006351:Heart Valves / Q000382:microbiology*; D006801:Humans; D007564:Japan / Q000453:epidemiology; D017720:Molecular Epidemiology; D016133:Polymerase Chain Reaction; D012703:Serotyping
chemical_list: D004269:DNA, Bacterial