TODENTJ-25-03-2019_TODENTJ-6-255 1553505430 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 12 28 2012 6 1 Theresia Laksmana Weerayuth Kittichotirat Yanyan Huang Weizhen Chen Michael Jorgensen Roger Bumgarner Casey Chen This study tested the feasibility of a high throughput metagenomic approach to analyze the pre- and posttreatment of subgingival plaque in two subjects with aggressive periodontitis. DNA was extracted from subgingival samples and subjected to PCR amplification of the c2-c4 regions of the 16S rDNA using primers with bar codes to identify individual samples. The PCR products were pooled and sequenced for the v4 region of the 16S rDNA using the 454 FLX standard platform. The results were analyzed for species/phylotypes in the Human Oral Microbiome Database (HOMD) and Ribosomal Database Project (RDP) database. The sequencing of the amplicons resulted in 24,673 reads and identified 208 species/phylotypes. Of those, 129 species/phylotypes were identified in both patients but their proportions varied. While >120 species/phylotypes were identified in all samples, 28-42 species/phylotypes cumulatively represent 90% of all subgingival bacteria in each sample. The remaining species/phylotypes each constituted ≤0.2% of the total subgingival bacteria. In conclusion, the subgingival microbiota are characterized by high species richness dominated by a few species/ phylotypes. The microbiota changed after periodontal therapy. High throughput metagenomic analysis is applicable to assess the complexity and changes of the subgingival microbiota. 12 28 2012 255 261 TODENTJ-6-255 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2012-8-20 2012-10-23 2012-11-16 2012-12-28 http://creativecommons.org/licenses/by-nc/3.0/ 10.2174/1874210601206010255 1553505430 https://opendentistryjournal.com/VOLUME/6/PAGE/255/ https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-255/TODENTJ-6-255.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-255/TODENTJ-6-255.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-255/TODENTJ-6-255.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-255/TODENTJ-6-255.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-255/TODENTJ-6-255.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-255/TODENTJ-6-255.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-255/TODENTJ-6-255.pdf https://opendentistryjournal.com/contents/volumes/V6/TODENTJ-6-255/TODENTJ-6-255.xml Periodontology Armitage GC 34 9 2000 2004 Armitage GC. 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