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A preliminary screening to determine the qualitative and quantitative glucan producing potential of VGS (Viridans group streptococci) was performed. VGS were recovered from oral cavity of individuals from a previous study based on prevalence of dental caries. Overall, out of 525 isolates, 41.5% were glucan producers while 58.5% were glucan non-producers. Species-wise comparison revealed the highest frequency of S. mutans (80.3%) exhibiting glucan producing potential followed by S. oralis (61.1%), S. intermedius (50%), S. anginosus (36.7%), S. mitis (35%) and S. salivarius (14.9%). None of the isolates of S. uberis and S. acidominimus showed the ability to produce glucan. On the basis of prevalence of dental caries, the frequency of isolates having glucan producing potential was observed higher from carious subjects (46.3%) as compared to non-carious subjects (39.1%). Whereas, species-wise distribution of isolates indicated that the prominent glucan producing species were S. sanguinis (100%, 3/3) and S. mutans (76%, 22/29) from carious and S. mutans (83%, 39/47) from non-carious subjects. The VGS isolates producing large amount of glucan were selected to be estimated quantitatively glucan producing potential of VGS. In this case, S. sanguinis produced largest quantity (276.2 mg mean, 206.2-324.6 range) followed by S. mutans (143.5 mg mean, 43.5-521.1 range).
Nazia Masood Ahmed, Perween Tariq, Asma Naim. (2021) GLUCAN PRODUCTION BY VIRIDANS GROUP STREPTOCOCCI, , Volume 18, Issue 3.
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