<?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>0121-8123</journal-id>
<journal-title><![CDATA[Revista Colombiana de Reumatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Colomb.Reumatol.]]></abbrev-journal-title>
<issn>0121-8123</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Reumatología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-81232022000500025</article-id>
<article-id pub-id-type="doi">10.1016/j.rcreu.2021.02.013</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[COVID-19 coagulopathy and antiphospholipid syndrome]]></article-title>
<article-title xml:lang="es"><![CDATA[Coagulopatía por COVID-19 y síndrome antifosfolipídico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Serrano]]></surname>
<given-names><![CDATA[Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa]]></surname>
<given-names><![CDATA[Gerard]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cervera]]></surname>
<given-names><![CDATA[Ricard]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Serrano]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Clínico San Carlos Department of Immunology ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Barcelona  ]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Healthcare Research Institute  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>29</volume>
<fpage>25</fpage>
<lpage>34</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-81232022000500025&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-81232022000500025&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-81232022000500025&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The presence of thrombotic events in COVID-19 patients has been described since the beginning of the pandemic. This association has been confirmed in most of the reported studies. Autopsy reports have shown that most thromboses are located in the lung, although they have also been observed in other organs such as the skin and kidneys. SARS-CoV2 infection induces a generalized prothrombotic state, which is attributed to a combination of factors such as hypoxia, excess cellular apoptosis, and mainly to overactivation of the immune system. Among immune-mediated prothrombotic situations, antiphospholipid syndrome (APS) stands out. Recurrent thrombotic events are observed in APS in the presence of antiphospholipid antibodies (aPL). There are numerous studies that report high prevalence of aPL in patients with COVID-19 infection. However, the results show discrepancies in the data on the prevalence of aPL, and its role in the pathogenesis of thrombosis in these patients. This could be due to the heterogeneity of the detection procedures for aPL or to transient elevations of non-pathogenic aPL levels in the context of infection. In this review we try to clarify the role of aPL in COVID-19 infection, and attempt to answer the question of whether it is a coagulopathy of its own, or secondary to APS.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La presencia de eventos trombóticos en los pacientes con COVID-19 se describió desde el inicio de la pandemia, asociación que ha sido confirmada en la mayoría de los estudios reportados. Los informes de necropsias han puesto de manifiesto que la mayoría de las trombosis se localiza en el pulmón, aunque también se han observado en otros órganos, como la piel y los riñones. La infección por SARS-CoV-2 induce un estado protrombótico generalizado que se atribuye a una conjunción de factores como la hipoxia, el exceso de apoptosis celular y, sobre todo, una hiperactivación del sistema inmune. Entre las situaciones protrombóticas inmunomediadas destaca el síndrome antifosfolipídico, en el cual se observan eventos trombóticos de repetición en presencia de anticuerpos antifosfolipídicos (AAF). Existen numerosos estudios que reportan una elevada prevalencia de AAF en los pacientes con infección por la COVID-19; sin embargo, los resultados muestran discordancias en los datos de prevalencia de AAF y su rol en la patogenia sobre la trombosis en estos pacientes, lo que que podría deberse a la heterogeneidad de los procedimientos de detección de los AAF o a elevaciones transitorias de los niveles de AAF no patogénicos en el contexto de la infección. En esta revisión se busca aclarar el papel de los AAF en la infección por COVID-19, intentando responder a la pregunta de si se trata de una coagulopatía propia o es secundaria a un síndrome antifosfolipídico.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Antiphospholipid syndrome]]></kwd>
<kwd lng="en"><![CDATA[Antibodies]]></kwd>
<kwd lng="en"><![CDATA[antiphospholipid]]></kwd>
<kwd lng="en"><![CDATA[Beta 2-glycoprotein]]></kwd>
<kwd lng="en"><![CDATA[Cardiolipins]]></kwd>
<kwd lng="en"><![CDATA[Lupus anticoagulant]]></kwd>
<kwd lng="en"><![CDATA[Thrombosis]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Coagulopathy]]></kwd>
<kwd lng="es"><![CDATA[Síndrome antifosfolipídico]]></kwd>
<kwd lng="es"><![CDATA[Anticuerpos antifosfolípidos]]></kwd>
<kwd lng="es"><![CDATA[Beta 2 glicoproteína]]></kwd>
<kwd lng="es"><![CDATA[Cardiolipina]]></kwd>
<kwd lng="es"><![CDATA[Anticoagulante lúpico]]></kwd>
<kwd lng="es"><![CDATA[Trombosis]]></kwd>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Coagulopatía]]></kwd>
</kwd-group>
</article-meta>
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