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  • Title: Specific Lactobacillus/Mutans Streptococcus co-aggregation.
    Author: Lang C, Böttner M, Holz C, Veen M, Ryser M, Reindl A, Pompejus M, Tanzer JM.
    Journal: J Dent Res; 2010 Feb; 89(2):175-9. PubMed ID: 20042742.
    Abstract:
    Selective interaction of mutans streptococci with benign bacteria could present an opportunity for their removal from the mouth without disruption of other oral flora. This study was conducted to find probiotic lactobacilli that could specifically co-aggregate in vitro with mutans streptococci, but not with other plaque commensals. A search of 624 lactobacilli among a large culture library revealed 6 strains, all classifiable as L. paracasei or L. rhamnosus, which met this criterion. Such novel, specific co-aggregation, however, was not a general characteristic of these species or the genus Lactobacillus. The co-aggregation by these specific lactobacilli was characterized as heat treatment (autoclaving)- and protease-resistant, lectin-independent, not inactivated by sugar substitutes, operational over a wide pH range, unaffected by whole saliva, but calcium-dependent. It is thus seen to present a potential strategy for in vivo alteration of plaque biofilm and caries.
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