<?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>0120-4157</journal-id>
<journal-title><![CDATA[Biomédica]]></journal-title>
<abbrev-journal-title><![CDATA[Biomédica]]></abbrev-journal-title>
<issn>0120-4157</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-41572017000200184</article-id>
<article-id pub-id-type="doi">10.7705/biomedica.v37i2.3263</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Determinación del polimorfismo de HLA-A, -B y -DRB1 en donantes de órganos con muerte encefálica representativos de la población general colombiana, 2007-2014]]></article-title>
<article-title xml:lang="en"><![CDATA[Determination of HLA-A, -B and -DRB1 polymorphism in brain dead organ donors representative of the Colombian general population, 2007-2014]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias-Murillo]]></surname>
<given-names><![CDATA[Yazmín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Osorio-Arango]]></surname>
<given-names><![CDATA[Karime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bayona]]></surname>
<given-names><![CDATA[Brayan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ercilla]]></surname>
<given-names><![CDATA[Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Beltrán-Durán]]></surname>
<given-names><![CDATA[Mauricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Salud Coordinación Red Nacional de Donación y Trasplantes, Dirección Redes en Salud Pública ]]></institution>
<addr-line><![CDATA[Bogotá, D.C. ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Salud Subdirección Red Nacional de Trasplantes y Bancos de Sangre, Dirección Redes en Salud Pública ]]></institution>
<addr-line><![CDATA[Bogotá, D.C. ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad del Norte Centro de Diagnóstico Especializado ]]></institution>
<addr-line><![CDATA[Barranquilla ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hospital Clinic de Barcelona Servicio de Inmunología ]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Instituto Nacional de Salud Dirección Redes en Salud Pública ]]></institution>
<addr-line><![CDATA[Bogotá, D.C. ]]></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>37</volume>
<numero>2</numero>
<fpage>184</fpage>
<lpage>190</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-41572017000200184&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-41572017000200184&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-41572017000200184&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción.  Los genes que codifican para el sistema de antígenos leucocitarios humanos (Human Leukocyte Antigen, HLA) son muy polimorfos y de gran importancia en procedimientos de trasplante de órganos, ya que la determinación de las frecuencias alélicas en poblaciones específicas se tiene en cuenta entre los criterios científicos para la asignación de órganos.  Objetivo.  Establecer las frecuencias antigénicas y haplotípicas de HLA-A, -B y -DRB1 en donantes de órganos con muerte encefálica, representativos de la población colombiana.  Materiales y métodos. En este estudio descriptivo retrospectivo de 2.506 donantes cadavéricos de órganos, se hizo un análisis alélico y de haplotipos de HLA-A, -B y -DRB1, y se determinó el equilibrio de Hardy-Weinberg.  Resultados. Se encontraron 21, 43 y 15 grupos alélicos para los loci A*, B* y DRB1*, respectivamente. Se detectaron 1.268 haplotipos HLA-A, -B y -DR, 409 haplotipos HLA A-B, 383 haplotipos HLA-B-DR y 218 haplotipos HLA-A-DR. Los tres loci se encontraban en equilibrio de Hardy-Weinberg entre el número de heterocigóticos observados y el esperado, con valores de p&lt;0,05.  Conclusiones.  En este estudio se proporciona información sobre la distribución de los alelos HLA de clase I y II en la población de donantes de órganos provenientes de las seis regionales en las que está dividido el país para la prestación de servicios de trasplante.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Genes encoding for human leukocyte antigens (HLA) are highly polymorphic and of great importance in organ transplantation procedures, as determining allelic frequencies in defined populations is taken into account among the scientific criteria for organ allocation.  Objective:  The objective of this study was to establish the antigen HLA-A, -B, and -DRB1 haplotype frequencies in organ donors representative of the Colombian population after brain death.  Materials and methods: We conducted a descriptive retrospective study involving 2,506 cadaveric organ donors including an allelic and haplotype analysis of HLA-A, -B and -DRB1; we also determined the Hardy-Weinberg equilibrium.  Results: We identified 21, 43 and 15 allelic loci for groups A*, B* and DRB1*, respectively. We detected 1,268 HLA-A, -B and -DR, 409 HLA-A-B, 383 HLA-DR-B, and 218 HLA-A-DR haplotypes. The three loci were found to be in Hardy-Weinberg equilibrium between the number of heterozygotes observed and the expected number, with p values of &lt;0.05.  Conclusions: This study provides information on the allelic distribution of HLA class I and II in organ donors from the six regions in which Colombia is structurally divided to provide transplant services.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[antígenos HLA]]></kwd>
<kwd lng="es"><![CDATA[alelos]]></kwd>
<kwd lng="es"><![CDATA[haplotipos]]></kwd>
<kwd lng="es"><![CDATA[trasplante]]></kwd>
<kwd lng="es"><![CDATA[donantes de tejidos]]></kwd>
<kwd lng="es"><![CDATA[Colombia]]></kwd>
<kwd lng="en"><![CDATA[HLA antigens]]></kwd>
<kwd lng="en"><![CDATA[alleles]]></kwd>
<kwd lng="en"><![CDATA[haplotypes]]></kwd>
<kwd lng="en"><![CDATA[transplantation]]></kwd>
<kwd lng="en"><![CDATA[tissue donor]]></kwd>
<kwd lng="en"><![CDATA[Colombia]]></kwd>
</kwd-group>
</article-meta>
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