• Alloiococcus otitidis Gramfärbung 1000x

    © LG1
  • Alloiococcus otitidis
    Kolonie < 1mm

    © LG1

Kurzinformation:Alloiococcus otitidis

Arten nur eine Art: A. otitidis

Bekannte Infektionen Wurde bei chronischer Otitis media als ein möglicher Erreger vermutet. Wird aktuell eher als Besiedler der Gehörgänge diskutiert (Leskinen et al 2004).

Empfindlichkeiten u. Therapie Therapie mit Vancomycin, resistent auf Erythromycine und Co-Trimoxazol. Resistenzen auf beta-Lactam Antibiotika vorhanden.

Systematik Gehört zu den aeroben, grampositiven Kokken, Katalase positiv. Verlängerte Bebrütung (bis zu 5 Tage) ist nötig um die Keime aerob zu kultivieren.

Literatur AGUIRRE (M.) and COLLINS (M.D.): Phylogenetic analysis of Alloiococcus otitis gen. nov., sp. nov., an organism from human middle ear fluid. Int. J. Syst. Bacteriol., 1992, 42, 79-83.
Hendolin et al. (1999). High incidence of Alloiococcus otitis in otitis media with effusion. Pediatr. infect. Dis. J. 18, 860-865. - Faden, H., Dryja, D. (1989). Recovery of a unique bacterial organism in human middle ear fluid and its possible role in chronic otitis media. J. clin. Microbiol. 27, 2488-2491. - Aguirre, M., Collins, M.D. (1992). Development of a polymerase chain reaction-probe test for identification of Alliococcus otitis. J. clin. Microbiol. 30, 2177-2180


Spezielles

Leskinen K; Hendolin P; Virolainen-Julkunen A; Ylikoski J; Jero J in
International journal of pediatric otorhinolaryngology, Vol. 68 (1), p: 51-6 (2004)
Alloiococcus otitidis in acute otitis media:
OBJECTIVE: The bacterium Alloiococcus otitidis has been found to be associated with otitis media with effusion (OME). When the culture method is used, its detection rate is low, whereas applying the polymerase chain reaction (PCR) yields significantly higher frequencies. This study was carried out to investigate the incidence of A. otitidis in children with acute otitis media (AOM). METHODS: Multiplex PCR was used to detect A. otitidis together with Haemophilus influenzae, Moraxella catarrhalis, and Streptococcus pneumoniae in the middle ear effusions (MEEs) of 118 children with AOM. The clinical outcome of AOM and the bacterial findings of MEEs were compared. RESULTS: A. otitidis was detected in 25% (30 of 118) of the tested MEE samples. Children over 2 years of age had significantly more often A. otitidis-positive MEEs (37%; 22 of 59) than younger children (14%; 8 of 59) (chi-square test, P<0.01). There were no significant differences in the duration, clinical failures (after antibiotic treatment), or number of recurrences of AOM between the A. otitidis-positive and A. otitidis-negative children. CONCLUSIONS: A. otitidis is found from the MEEs of AOM. The present data suggest that it has no clinical significance in AOM, and it does not increase the risk of developing OME after AOM.