Proteolytic activity of microflora in oral cavity of patients with periodontitis


1. Gabrichevsky Institute of Microbiology and Epidemiology
Type: Experimental/clinical study
UDK: 579.61      PubMed Id: 19205430
Year: 2008 vol: 54  issue:6  pages: 706-712
Abstract: Microbial spectrum and non-specific as well as specific IgA1 protease activity of isolated microorganisms were investigated in gingival liquid of patients with periodontitis.Microorganisms from the gingival liqud of these patients belonged to conditional-pathogenic obligate and facultatively anaerobic bacteria. 24 strains of microorganisms have been identified. Nonspecific proteolytic activity was found in the following microorganisms: Actinomyces israelii, Actinomyces naeslundii, Aerococcus viridans, Bifidobacterium longum, Neisseria subflave, Streptococcus parvulus, Eubacterium alactolyticum, Lactobaccilus catenoforme, Bacillus spp. Specific IgA1-protease activity and lack of proteolytic activity towards IgG was found in Streptococcus acidominimus, Streptococcus hansenii, Streptococcus salivarius, Leptotrychia buccalis, Staphylococcus haemolyticus and Neisseria sicca. No proteolytic activity was found in cultivation medium of Eubacterium alactolyticum (1 strain), Prevotella buccalis, Aerococcus viridans and Streptococcus sanguis.
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Reference: Voropaeva E.A., Bajrakova A.L., Bichucher A.M., Kozlov L.V., D'yakov V.L., Proteolytic activity of microflora in oral cavity of patients with periodontitis, Biomeditsinskaya khimiya, 2008, vol: 54(6), 706-712.