<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1794-2470</journal-id>
<journal-title><![CDATA[Nova]]></journal-title>
<abbrev-journal-title><![CDATA[Nova]]></abbrev-journal-title>
<issn>1794-2470</issn>
<publisher>
<publisher-name><![CDATA[Universidad Colegio Mayor de Cundinamarca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1794-24702017000100067</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Determinación de factores de adhesión asociados a la formación de biopelícula en aislamientos clínicos de Staphylococcus aureus y Staphylococcus epidermidis]]></article-title>
<article-title xml:lang="en"><![CDATA[Determination of adhesion factors associated with biofilm formation in clinical isolates of Staphylococcus aureus and Staphylococcus epidermidis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinilla]]></surname>
<given-names><![CDATA[Gladys]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bautista]]></surname>
<given-names><![CDATA[Angela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chavarro]]></surname>
<given-names><![CDATA[Bibiana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarrete]]></surname>
<given-names><![CDATA[Jeannette]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz]]></surname>
<given-names><![CDATA[Liliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez]]></surname>
<given-names><![CDATA[Jennifer]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Colegio Mayor de Cundinamarca Facultad de Ciencias de la Salud Programa de Bacteriología y Laboratorio clínico]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Colegio Mayor de Cundinamarca Semillero Grupo REMA ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>15</volume>
<numero>27</numero>
<fpage>67</fpage>
<lpage>75</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1794-24702017000100067&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1794-24702017000100067&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1794-24702017000100067&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los factores de adhesión son determinantes de virulencia que se expresan en microorganismos que tienen la capacidad de formar biopelícula, contribuyendo a la gravedad de infecciones intrahospitalarias. Dentro de estos componentes de la superficie microbiana que reconocen moléculas de adhesión de matriz conocidas como MSCRAMMs, se incluyen el factor de unión a fibronectina A y B, (FnbA y B) factor de aglutinación A y B (ClfA y B) y factor de unión a fibrinógeno (Fib), que se han descrito en Staphylococcus aureus y reaccionan con proteínas de la matriz extracelular humana. El objetivo de este estudio fue determinar la presencia de estos factores de adhesión relacionados con la formación de biopelicula en Staphylococcus.  Método. Se caracterizaron fenotípica y genotípicamente 30 aislamientos clínicos de Staphylococcus aureus y Staphylococcus epidermidis, provenientes de pacientes inmunocomprometidos en tres instituciones hospitalarias de Bogotá. La producción de Biopelícula se determinó mediante Rojo Congo y Cristal violeta y mediante PCR convencional y múltiplex se amplificaron los genes FnbA y B, ClfA y B y Fib, así como los genes del operón ica ADBC.  Resultados. Todos los aislamientos clínicos fueron positivos genotípica y fenotípicamente para la producción de Biopelícula, encontrándose la presencia del operón completo en el 88.9%, los factores ClfA y ClfB en un 70%; Fib en un 60%, FnbB en un 23% y FnbA en el 17%.  Conclusiones. En este estudio se evidenció la presencia de estos factores de virulencia en S. epidermidis, los cuáles hasta el momento se han reportado únicamente en S.aureus. Este hallazgo es importante ya que se sugiere la relación con transferencia horizontal de genes entre estas especies, siendo el S. epidermidis un importante reservorio genético, y un importante patobionte causal de infecciones nosocomiales, asociado con dispositivos médicos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Adhesion factors are virulence determinants that are expressed in microorganisms with the ability to form biofilms, contributing to the severity of nosocomial infections. Among these microbial surface components recognizing adhesive matrix molecules (MSCRAMMs), are fibronectin binding A and B (fnbA and B) clumping A and B (ClfA and B) and fibrinogen binding (Fib) factors. All of these have been described in Staphylococcus aureus and react with human extracellular matrix proteins. The goal of this study was to determine adhesion factors related to the biofilm formation in Staphylococcus.  Method. For these purpose, 30 clinical isolates of Staphylococcus aureus and Staphylococcus epidermidis, from immunocompromised patients in three hospitals in Bogotá were characterized both, genotypically and phenotypically. The biofilm formation was determined through Congo Red and Violet Crystal and the genes FnbA, B, ClfA, B, Fib and operon ica ADBC were amplified through conventional and multiplex PCR.  Results. Every clinical isolate were genotypically and phenotypically positive for the biofilm formation, being found the presence of the whole ica ADBC operon in 88,9%. The ClfA and ClfB were found by 70%; Fib 60%, fnbB 23% and 17% offnbA.  Conclusions. This study proved the presence of these virulence factors in S. epidermidis, which so far have only been reported in S. aureus. This finding is important because it suggestes the relationship with horizontal gene transfer between these species, being the S. epidermidis an important genetic reservoir and a causal patobiont of nosocomial infections associated with medical devices.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Biopelícula]]></kwd>
<kwd lng="es"><![CDATA[factores de adhesión]]></kwd>
<kwd lng="es"><![CDATA[Staphylococcus aureus]]></kwd>
<kwd lng="es"><![CDATA[Staphylococcus epidermidis]]></kwd>
<kwd lng="en"><![CDATA[Biofilm]]></kwd>
<kwd lng="en"><![CDATA[adhesion factors]]></kwd>
<kwd lng="en"><![CDATA[Staphylococcus aureus]]></kwd>
<kwd lng="en"><![CDATA[Staphylococcus epidermidis]]></kwd>
</kwd-group>
</article-meta>
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