Isolation of Stomatococcus mucilaginosus from drug user with endocarditis

Author:

Coudron P E,Markowitz S M,Mohanty L B,Schatzki P F,Payne J M

Abstract

Stomatococcus mucilaginosus was isolated from the blood of a patient with endocarditis and a past history of drug abuse and aortic valve replacement. At autopsy, Gram stain of the aortic valve revealed gram-positive cocci. Our isolate was atypical for S. mucilaginosus in that colonies were nonmucoid and nonadherent to agar surfaces. Cellular capsules were demonstrated by light and electron microscopy. Phenotypic characteristics identified by conventional methods as well as profile numbers obtained by using two commercial identification systems for staphylococci, the API Staph-Ident and the dms Staph Trac, are presented. Practical tests that differentiate S. mucilaginosus from the genera Micrococcus and Staphylococcus include growth on nutrient agar containing salt and lysostaphin susceptibility. Additional tests that helped differentiate our isolate from group D streptococci included hydrolysis of L-pyrrolidonyl-beta-naphthylamide and streptococcal serogrouping.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

Reference11 articles.

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3. Bergan T. and M. Kocur. 1982. Stomatococcus mucilaginosus gen.nov. sp.nov. ep. rev. a member of the family Micro coccaceae. Int. J. Syst. B3acteriol. 32:374-377.

4. Clark W. A. D. G. Hollis R. E. Weaver and P. Riley. 1984. Identification of unusual pathogenic gram-negative aerobic and facultatively anaerobic bacteria. U.S. Department of Health and Human Services Washington D.C.

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