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Proteinase Activity of Prevotella Species Associated with Oral Purulent Infection
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Proteinase Activity of Prevotella Species Associated with Oral Purulent Infection
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Proteinase Activity of Prevotella Species Associated with Oral Purulent Infection
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Journal Article
Proteinase Activity of Prevotella Species Associated with Oral Purulent Infection
2006
Overview
Prevotella intermedia and Prevotella nigrescens are often regarded as principal causes of acute dentoalveolar infection; however, other species within the genus are also known to be associated with such infection. The aim of this study was to determine the in vitro proteolytic activity of these different Prevotella species that have been implicated with dentoalveolar infection. A total of 234 strains were obtained from pus specimens from dentoalveolar infection and from the plaque of healthy volunteers. Prevotella loescheii, Prevotella oralis, Prevotella melaninogenica, Prevotella buccae, and Prevotella denticola were all shown to have a proteolytic activity (8.5-10.5 x 10(-8) A-units) lower than that of P. intermedia and P. nigrescens (21.1-23.5 x 10(-8) A-units). In the case of P. loescheii, P. melaninogenica, and P. intermedia, the level of proteolytic activity for clinical strains was significantly (P < 0.05) higher than that recorded for commensal strains. Proteolytic activity for all species of Prevotella examined was inhibited by N-ethylmaleimide and phenymethylsulfonyl fluoride. This study suggests that Prevotella species associated with oral purulent infection produce cysteine and serine proteinases and that in certain species of Prevotella, the strains involved in infection exhibit higher proteolytic activity when compared with strains from healthy sites.
Publisher
Springer Nature B.V
