Porphyromonas somerae sp. nov., a Pathogen Isolated from Humans and Distinct from Porphyromonas levii

Author:

Summanen Paula H.1,Durmaz Bengül2,Väisänen Marja-Liisa3,Liu Chengxu1,Molitoris Denise1,Eerola Erkki4,Helander Ilkka M.5,Finegold Sydney M.678

Affiliation:

1. Research Service

2. Inönü University, Faculty of Medicine, Department of Microbiology, Malatya, Turkey

3. Department of Bacteriology Anaerobe Reference Laboratory, National Public Health Institute (KTL), Helsinki, Finland

4. Department of Medical Microbiology, Turku University, Turku, Finland

5. Department of Applied Chemistry and Microbiology, Division of Microbiology, University of Helsinki, Helsinki, Finland

6. Infectious Diseases Section, Veterans Affair Medical Center West Los Angeles, Los Angeles, California

7. Department of Medicine

8. Department of Microbiology, Immunology and Molecular Genetics, University of California at Los Angeles School of Medicine, Los Angeles, California

Abstract

ABSTRACT Porphyromonas levii is an anaerobic, pigmented gram-negative bacillus originally isolated from bovine rumen. We describe 58 human clinical strains of P. levii -like organisms, isolated from various human clinical specimens that are phenotypically similar to the type strain of P. levii , a rumen isolate (ATCC 29147). Our biochemical, comparative 16S rRNA sequence analyses, and DNΑ-DNA relatedness studies indicate that the human P. levii -like organisms are similar to each other but genetically different from the P. levii type strain isolated from bovine rumen. We therefore propose the name Porphyromonas somerae to encompass the human P. levii -like organisms. P. somerae was predominantly isolated from patients with chronic skin and soft tissue or bone infections, especially in the lower extremities.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

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