Nutritionally variant streptococci.
نویسندگان
چکیده
منابع مشابه
Penicillin tolerance in nutritionally variant streptococci.
Eleven strains of nutritionally variant streptococci were tested for their susceptibility to penicillin by a broth dilution method. All minimal inhibitory concentrations were low. It was found that plates containing only vitamin B6 (pyridoxal HCl) and cysteine did not reveal true minimal bactericidal concentrations. When penicillinase was added to the subculture medium and a staphylococcal stre...
متن کاملPhysiological characterization of nutritionally variant streptococci.
Twenty-five isolates of nutritionally variant streptococci submitted to the Streptococcus Laboratory of the Center for Disease Control over a 2-year period were tested for growth requirements and for biochemical reactions. After they were recovered from storage in blood at -170 degrees C, all isolates grew within 48 h in both thioglycollate broth and Todd-Hewitt broth supplemented with 0.001% p...
متن کاملModified antimicrobial disc susceptibility testing for nutritionally-variant streptococci.
Streptococci that were dependent for their growth upon staphylococci were isolated from a patient with sub-acute bacterial endocarditis and subsequently identified as nutritionally-variant streptococci (NVS). Failure of the isolate to grow on agar media supplemented with pyridoxal hydrochloride or L-cysteine, the known supporting growth factors for NVS, made conventional antimicrobial disc diff...
متن کاملIn vitro antimicrobial inhibition patterns of nutritionally variant streptococci.
Twenty-four isolates of nutritionally variant streptococci, previously categorized as species included among the viridans streptococci, were tested for susceptibility to 12 antimicrobial agents. Minimum inhibitory concentrations for these isolates and for a control group of viridans streptococci with no apparent nutritional deficiencies were determined in two microdilution systems. Pyridoxal hy...
متن کاملVertebral Osteomyelitis Due to Granulicatella Adiacens, a Nutritionally Variant Streptococci
Vertebral osteomyelitis is a common pathology affecting the spine. We present the case of a 46-year-old male who was diagnosed with progressive L2 vertebral osteomyelitis due to a rare pathogen, Granulicatella adiacens. Granulicatella adiacens is part of the normal body flora and is often difficult to culture on traditional mediums. The patient required a lateral corpectomy and posterior fixati...
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ژورنال
عنوان ژورنال: Clinical Microbiology Reviews
سال: 1991
ISSN: 0893-8512,1098-6618
DOI: 10.1128/cmr.4.2.184-190.1991