<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Juarez Henrique Ferreira</style></author><author><style face="normal" font="default" size="100%">Rafael Martinez Garcia</style></author><author><style face="normal" font="default" size="100%">Fariza Abrão</style></author><author><style face="normal" font="default" size="100%">Yadira Arnet Fernandez</style></author><author><style face="normal" font="default" size="100%">Regina Helena Pires</style></author><author><style face="normal" font="default" size="100%">Sérgio Ricardo Ambrósio</style></author><author><style face="normal" font="default" size="100%">Rodrigo Cassio Sola Veneziani</style></author><author><style face="normal" font="default" size="100%">Carlos Henrique Gomes Martins</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Bactericidal Kinetics and Antibiofilm Efficacy of Pimarane-Type Diterpenes from Viguiera arenaria Against Cariogenic Bacteria</style></title><secondary-title><style face="normal" font="default" size="100%">Pharmacognosy Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Antibacterial activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Bactericidal kinetics</style></keyword><keyword><style  face="normal" font="default" size="100%">Scanning electron microscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">Streptococcus mutans</style></keyword><keyword><style  face="normal" font="default" size="100%">Viguiera arenaria</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2018</style></year><pub-dates><date><style  face="normal" font="default" size="100%">March 2018</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://fulltxt.org/article/503</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">10</style></volume><pages><style face="normal" font="default" size="100%">429-434</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;strong&gt;Background:&lt;/strong&gt; Dental caries is an infectious disease related to biofilm formation. Among the microorganisms presents in the oral microbiota, &lt;em&gt;Streptococcus mutans&lt;/em&gt; can form biofilm on the tooth surface in the presence of dietary carbohydrates. This study aimed to evaluate the bactericidal kinetics and antibiofilm efficacy of ent-pimara-8(14),15-dien-19-oic acid (compound 1) and ent-8(14),15-pimaradien-3&amp;beta;-ol (compound 2) obtained from &lt;em&gt;Viguiera arenaria &lt;/em&gt;against oral pathogens; this study also aimed to determine the effect of these compounds on the morphology and architecture of the &lt;em&gt;S. mutans&lt;/em&gt; biofilm by scanning electron microscopy (SEM). &lt;strong&gt;Materials and Methods:&lt;/strong&gt; The bactericidal kinetics revealed different results depending on the tested bacteria. Compound 1 eliminated the viable bacteria within 24 hs of incubation. In the antibiofilm assay, compound 1 displayed promising results against S. mitis (ATCC 49456 and clinical isolate) and &lt;em&gt;L. casei&lt;/em&gt; (clinical isolate), whereas compound 2 was not active at the evaluated concentrations. &lt;strong&gt;Conclusion:&lt;/strong&gt; Compound 1 is an important metabolite in the search for new antibacterial agents against cariogenic bacteria both in the sessile and planktonic modes. The SEM image of &lt;em&gt;Streptococcus mutans&lt;/em&gt; in the presence of compound 1 suggested that this metabolite acts by disrupting the bacterial membrane disrupting the bacterial membrane and/or cell wall and causing microrganism death.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue><work-type><style face="normal" font="default" size="100%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">429</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;strong&gt;Juarez Henrique Ferreira&lt;sup&gt;1&lt;/sup&gt;, Rafael Martinez Garcia&lt;sup&gt;1&lt;/sup&gt;, Fariza Abr&amp;atilde;o&lt;sup&gt;1&lt;/sup&gt;, Yadira Arnet Fernandez&lt;sup&gt;1&lt;/sup&gt;, Regina Helena Pires&lt;sup&gt;1&lt;/sup&gt;, S&amp;eacute;rgio Ricardo Ambr&amp;oacute;sio&lt;sup&gt;2&lt;/sup&gt;, Rodrigo Cassio Sola Veneziani&lt;sup&gt;2&lt;/sup&gt;, Carlos Henrique Gomes Martins&lt;sup&gt;1*&lt;/sup&gt; &lt;/strong&gt;&lt;/p&gt;
&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Research Laboratory of Applied Microbiology, University of Franca, Franca, SP, BRAZIL.&lt;/p&gt;
&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Nucleus of Research in Sciences and Technology, University of Franca, Franca, SP, BRAZIL.&lt;/p&gt;</style></auth-address></record></records></xml>