Journal Article

Characteristics of an Unusual Anaerobic Pigmented Gram-Negative Rod Isolated from Normal and Inflamed Appendices

Merja Rautio, Maarit Lönnroth, Harri Saxén, Risto Nikku, Marja-Liisa Väisänen, Sydney M. Finegold and Hannele Jousimies Somer

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 25, issue Supplement_2, pages S107-S110
Published in print September 1997 | ISSN: 1058-4838
Published online September 1997 | e-ISSN: 1537-6591 | DOI: http://dx.doi.org/10.1086/516210
Characteristics of an Unusual Anaerobic Pigmented Gram-Negative Rod Isolated from Normal and Inflamed Appendices

More Like This

Show all results sharing these subjects:

  • Infectious Diseases
  • Immunology
  • Public Health and Epidemiology
  • Microbiology

GO

Show Summary Details

Preview

During our studies of the bacterial etiology of appendicitis, we often isolated a previously undescribed anaerobic gram-negative rod. This organism resembled the Bacteroides fragilis group because it was resistant to bile and because of its special-potency-disk pattern (resistant to vancomycin, kanamycin, and colistin), but unlike the B. fragilis group, this bacterium produced brown pigment on media containing hemolysed blood. The cellular fatty acid pattern, with iso-C15:0 being the predominant acid, was most closely related to the fatty acid profile of Porphyromonas species; however, this organism differed from Porphyromonas species by being bile-resistant and by not producing butyrate as a metabolic endproduct. Enzymatic activities of 31 isolates were determined with use of the API ZYM system and Rosco diagnostic tablets. These profiles were different from those of Prevotella, Porphyromonas, and related species. This organism was isolated from 40% of appendiceal tissue samples; no obvious qualitative or quantitative difference in rates of isolation from patients with inflamed or normal appendices was observed.

Journal Article.  0 words. 

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.