01917nas a2200229   4500008004100000022001400041245011600055210006900171260006700240300001200307490000800319520106400327653001801391653002801409653000801437100002201445700002501467700002301492700002801515700002501543856011901568       2014                        eng d  a0378-109700aIsolation of streptococcus tigurinus - a novel member of streptococcus mitis group from a case of periodontitis0 aIsolation of streptococcus tigurinus a novel member of streptoco  a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcAUG  a131-1350 v3573 a<p>Streptococcus tigurinus is a new member of the Streptococcus viridians group and is closely related to Streptococcus mitis, Streptococcus pneumoniae, Streptococcus pseudopneumoniae, Streptococcus oralis, and Streptococcus infantis. The type strain AZ_3a(T) of S. tigurinus was originally isolated from a patient with infective endocarditis. Accurate identification of S. tigurinus is facilitated only by newer molecular methods like 16S rRNA gene analysis. During the course of study on bacteraemia and infective endocarditis with reference to periodontitis and viridians group of streptococci, a strain of S. tigurinus isolated from subgingival plaque of a patient with periodontitis identified by 16S rRNA gene analysis, which was originally identified as Streptococcus pluranimalium by Vitek 2. Confirmation by 16S rRNA gene analysis showed 99.39% similarity (1476/1485 bp) with S. tigurinus AZ_3a(T) (AORU01000002). To the best of our knowledge, this is the first report of isolation of S. tigurinus from the oral cavity of a periodontitis patient.</p>10aperiodontitis10aStreptococcus tigurinus10aVGS1 aDhotre, Shree, V.1 aMehetre, Gajanan, T.1 aDharne, Mahesh, S.1 aSuryawanshi, Namdev, M.1 aNagoba, Basavraj, S.  uhttps://library.ncl.res.in/content/isolation-streptococcus-tigurinus-novel-member-streptococcus-mitis-group-case-002273nas a2200193   4500008004100000245007300041210006900114260000800183300001200191490000700203520164200210100002201852700002301874700001501897700001701912700002401929700002101953856010501974       2015                        eng d00aViridians group streptococci in patients undergoing tooth extraction0 aViridians group streptococci in patients undergoing tooth extrac  cSEP  a227-2330 v123 a<p>The aerobic microflora of the oral cavity consists of viridians group of streptococci (VGS). The present study was carried out with an objective to evaluate the prevalence of VGS in patients undergoing tooth extraction and to study their antibiotic susceptibility pattern. Samples of subgingival dental plaques for microbiological studies were collected from 80 patients undergoing tooth extraction. The isolated streptococci were identified along with their antibacterial susceptibilities by automated Vitek 2 (bioMérieux) system in accordance with CLSI standards. A total of 260 VGS strains belonging to 05 phenotypic groups, namely mutans, salivarius, anginosus, sanguinus and mitis groups; along with few strains of Granulicatella like G. adiacens and G. elegans. Altogether a total of 15 species were isolated from the subgingival plaque of 80 patients undergoing tooth extraction. Among the 15 antibiotics tested, highest resistance was observed to lincosamides (36.2%) followed by macrolides (29.7%), tetracyclines (17.7%), cephems (15.1%), fluoroquinolones (14.4%), oxazolidinones (13.5%), streptogramins (12.7 %) and penicillins (7.9%). However, all the 260 VGS strains were found susceptible to vancomycin and linezolid. In the subgingival plaque of patients undergoing tooth extraction, approximately 70% of streptococci belonged to three VGS groups, i.e. mitis, sanguinis and mutans groups. Streptococci of salivarus and anginosus groups were isolated sporadically (5%). Highest resistance was observed to lincosamides and macrolides (29.7%). Multiple antibiotic resistance was observed in mitis and salivarius group.</p>1 aDhotre, Shree, V.1 aDharne, Mahesh, S.1 aPotdar, S.1 aSuklikar, J.1 aSuryawanshi, Namdev1 aNagoba, Basavraj  uhttps://library.ncl.res.in/content/viridians-group-streptococci-patients-undergoing-tooth-extraction