We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Streptococcus anginosus.
- Authors
Takahashi, Y.; Yoshida, A.; Nagata, E.; Hoshino, T.; Oho, T.; Awano, S.; Takehara, T.; Ansai, T.
- Abstract
Streptococcus anginosus, an anginosus group bacterium, is frequently isolated from odontogenic abscesses, and is the oral bacterium that is primarily responsible for producing hydrogen sulfide from -cysteine through the action of its -cysteine desulfhydrase (βC-S lyase) enzyme. However, the relationship between its production of hydrogen sulfide and abscess formation has not been investigated. To elucidate the etiological role of hydrogen sulfide in abscess formation, we initially measured, using specific primers, expression of the lcd gene, which encodes βC-S lyase, in the pus of abscesses that formed in BALB/c mice following subcutaneous injection of S. anginosus into the dorsa. Expression of lcd was >15-fold higher when -cysteine was present than when it was absent. A mouse virulence assay revealed that the mean diameter of abscesses caused by S. anginosus FW73 plus -cysteine was greater than that of abscesses caused by S. anginosus FW73 in the absence of -cysteine. These findings demonstrate that the lcd gene of S. anginosus is upregulated in mouse abscesses and that hydrogen sulfide, the product of a reaction catalyzed by βC-S lyase, plays an etiological role in odontogenic abscess formation.
- Subjects
STREPTOCOCCUS; ORAL microbiology; ABSCESSES; HYDROGEN sulfide; ETIOLOGY of diseases; LABORATORY rats; GENE expression; MICROBIAL virulence; MICROBIOLOGY
- Publication
Molecular Oral Microbiology, 2011, Vol 26, Issue 3, p221
- ISSN
2041-1006
- Publication type
Article
- DOI
10.1111/j.2041-1014.2010.00599.x