Endocarditis Caused by Streptococcus Morbillorum

Coto, Humberto; Berk, Steven L.

doi:10.1097/00000441-198405000-00019

Cited by 25 publications

(9 citation statements)

References 21 publications

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“…To our knowledge, only 8 cases of IE caused by Gemella morbillorum have been published including the present case. Under the genus Streptococcus, 4 cases were reported (4,5,7,8 In general, development of IE is determined by relationship between its bacterial toxicity and host immunity. Although the presence of underlying heart disease is common,IE can develop without any underlying heart disease if host immunity is disordered.…”

Section: Discussionmentioning

confidence: 99%

Infective Endocarditis Caused by an Indigenous Bacterium. (Gemella morbillorum)

et al. 1994

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A case of infective endocarditis (IE) caused by a rare pathogen, Gemella morbillorum, is presented. Because of persistent low-grade fever after dental treatment, the patient was given oral antibiotics. Whereas he was diagnosed as having aortic regurgitation by a cardiologist, and IE was not suggested unfortunately. After long-term chemotherapy over five months, he was aware of nocturnal dyspnea and Gemella morbillorum was detected by blood culture. Then, he was treated with intravenous administration of Penicillin-G, and underwent surgical operation for valve replacement. No cases of IE due to this organism have been reported in Japan. (Internal Medicine 33: 628-631, 1994)

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Section: Discussionmentioning

confidence: 99%

Infective Endocarditis Caused by an Indigenous Bacterium. (Gemella morbillorum)

et al. 1994

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“…In Vitro Studies A number of reports on the antimicrobial susceptibility of NVS have appeared in the literature (3,11,13,17,19,20,23,28,29,37,39,40,46,50,55 (17) and 0.5 to 8 p,g/ml (3) have been reported. Variable results also occur with cephalosporins.…”

Section: Antimicrobial Susceptibility Of Nvsmentioning

confidence: 99%

Nutritionally variant streptococci

1991

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Streptococci requiring either pyridoxal or L-cysteine for growth were first observed 30 years ago as organisms forming satellite colonies adjacent to colonies of "helper" bacteria. Although they were previously considered nutritional mutants of viridans streptococcal species, the nutritionally variant streptococci (NVS) are currently thought to belong to distinct species of the genus Streptococcus. NVS strains may display pleomorphic cellular morphologies, depending on their growth conditions, and are distinguished from most other streptococci by enzymatic and serological characteristics and the presence of a cell wall chromophore. NVS are found as normal inhabitants of the oral cavity, and in addition to their participation in endocarditis, they have been isolated from a wide range of clinical specimens. Endocarditis caused by NVS is often difficult to eradicate; combinations of penicillin and an aminoglycoside are recommended for treatment. The unique physiological features of the NVS contribute to the difficulties encountered in their recovery from clinical specimens and may play a role in the problems associated with successful treatment of NVS endocarditis.

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“…It was first included in the genus Gemella in 1988 on the basis of DNA hybridization, and has been described in cases of empyema and lung abscess, 5 septic shock, 6 osteomyelitis, 7 meningitis, 8,9 and endocarditis. 10,11 It is a normal inhabitant of the upper respiratory tract, oral cavity, and the intestinal tract. Identification of the organism may be delayed owing to its slow growth and fastidious requirements and gram variable morphology.…”

Section: Discussionmentioning

confidence: 99%