First case of infectious endocarditis caused by Parvimonas micra

Carlos A Gomez; Daniel A Gerber; Eduardo Zambrano; Niaz Banaei; Stan Deresinski; Brian G Blackburn

doi:10.1016/j.anaerobe.2015.10.007

First case of infectious endocarditis caused by Parvimonas micra

Anaerobe. 2015 Dec:36:53-5. doi: 10.1016/j.anaerobe.2015.10.007. Epub 2015 Oct 17.

Authors

Carlos A Gomez¹, Daniel A Gerber², Eduardo Zambrano³, Niaz Banaei⁴, Stan Deresinski⁵, Brian G Blackburn⁵

Affiliations

¹ Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, 300 Pasteur Dr, Lane Building L 134, Stanford, CA 94305, USA. Electronic address: carlosgomez@stanford.edu.
² Department of Medicine, Stanford University School of Medicine, 300 Pasteur Dr, Lane Building L 134, Stanford, CA 94305, USA.
³ Department of Pathology, Stanford University School of Medicine, 300 Pasteur Dr, Stanford, CA 94305, USA.
⁴ Department of Pathology, Stanford University School of Medicine, 300 Pasteur Dr, Stanford, CA 94305, USA; Clinical Microbiology Laboratory, Stanford Hospital and Clinics, 3375 Hillview Ave, Palo Alto, CA 94304, USA.
⁵ Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, 300 Pasteur Dr, Lane Building L 134, Stanford, CA 94305, USA.

PMID: 26485192
DOI: 10.1016/j.anaerobe.2015.10.007

Abstract

P. micra is an anaerobic Gram-positive cocci, and a known commensal organism of the human oral cavity and gastrointestinal tract. Although it has been classically described in association with endodontic disease and peritonsillar infection, recent reports have highlighted the role of P. micra as the primary pathogen in the setting of invasive infections. In its most recent taxonomic classification, P. micra has never been reported causing infectious endocarditis in humans. Here, we describe a 71 year-old man who developed severe native valve endocarditis complicated by aortic valvular destruction and perivalvular abscess, requiring emergent surgical intervention. Molecular sequencing enabled identification of P. micra.

Keywords: 16S ribosomal RNA; Gram-positive anaerobic cocci; Infectious endocarditis; Parvimonas micra; Peptostreptococcus.

Publication types

Case Reports

MeSH terms

Aged
Endocarditis / diagnosis
Endocarditis / microbiology*
Gram-Positive Bacterial Infections / diagnosis
Gram-Positive Bacterial Infections / microbiology*
Humans
Male
Peptostreptococcus / genetics
Peptostreptococcus / isolation & purification*
Peptostreptococcus / physiology