Biochemical and Chemical Studies on Strains Designated Prevotella intermedia and Proposal of a New Pigmented Species, Prevotella nigrescens sp. nov.
نویسندگان
چکیده
منابع مشابه
Proposal of a new species Prevotella nigrescens sp. nov. among strains previously classified as Pr. intermedia.
Thirty-one strains characterized initially as Prevotella inter-media were subjected to: DNADNA hybridization, against reference DNA probes from strains ATCC 25611T and ATCC 33563; physiological tests; peptidase and lipase activities; and multilocus enzyme analysis using malate dehydrogenase (MDH) and glutamate dehydrogenase (GDH). In keeping with the properties of Pr. intermedia, all strains fe...
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Type strains and 62 clinical isolates of Prevotella intermedia and Prevotella nigrescens were typed with the use of genomic DNA fingerprints and rRNA gene probes. The strains were further serotyped with monoclonal antibodies and characterized with SDS-PAGE, enzymatic activities, hemolysis and hemagglutination and coaggregation with Streptococcus and Actinomyces spp. P. intermedia and P. nigresc...
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The susceptibilities of 143 Porphyromonas gingivalis, Prevotella intermedia, and Prevotella nigrescens isolates to 18 antimicrobial agents were tested. All P. gingivalis isolates were susceptible. In contrast, some Prevotella spp. (17%) were resistant to beta-lactams, erythromycin, clindamycin, or tetracycline and carried resistance genes, ermF or tetQ, or beta-lactamases.
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Black-pigmented anaerobic rods such as Prevotella spp. and Porphyromonas spp. are involved in the etiology and perpetuation of endodontic infections. The aim of this study was to evaluate the prevalence of these species in chronic endodontic infections by using culture and polymerase chain reaction (PCR) techniques. Samples of 100 patients with root canals displaying chronic endodontic infectio...
متن کاملSusceptibilities of Eikenella corrodens, Prevotella intermedia, and Prevotella nigrescens clinical isolates to amoxicillin and tetracycline.
The AB Biodisk Etest showed that 106 (100%) and 98 (92%) isolates of Eikenella corrodens were susceptible to amoxicillin and tetracycline, respectively. Twenty-three (68%) Prevotella intermedia isolates and 14 (67%) Prevotella nigrescens isolates were susceptible to amoxicillin. Seventy-nine percent of the P. intermedia isolates and 67% of the P. nigrescens isolates were susceptible to tetracyc...
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ژورنال
عنوان ژورنال: International Journal of Systematic Bacteriology
سال: 1992
ISSN: 0020-7713,1465-2102
DOI: 10.1099/00207713-42-4-542