<?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>0003-3170</journal-id>
<journal-title><![CDATA[Angiología]]></journal-title>
<abbrev-journal-title><![CDATA[Angiología]]></abbrev-journal-title>
<issn>0003-3170</issn>
<publisher>
<publisher-name><![CDATA[Arán Ediciones S.L.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0003-31702023000300003</article-id>
<article-id pub-id-type="doi">10.20960/angiologia.00499</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Asociación entre metilación del ADN y tabaquismo en pacientes con isquemia crónica amenazante de extremidades inferiores]]></article-title>
<article-title xml:lang="en"><![CDATA[Association between DNA methylation and smoking in patients with chronic limb-threatening ischemia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marcos-García]]></surname>
<given-names><![CDATA[Lidia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velescu]]></surname>
<given-names><![CDATA[Alina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lacambra]]></surname>
<given-names><![CDATA[Mónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinto]]></surname>
<given-names><![CDATA[María Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[Carles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Clarà]]></surname>
<given-names><![CDATA[Albert]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Elosua]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital del Mar Servicio de Angiología, Cirugía Vascular y Endovascular ]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Institut Hospital del Mar d'Investigacions Mèdiques  ]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universitat Pompeu Fabra Departament de Medicina i Ciències de la Vida ]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Parque Tecnológico de Andalucía ECAI de Genómica ]]></institution>
<addr-line><![CDATA[Málaga ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Central de Cataluña Universidad de VIC Departamento de Medicina]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>75</volume>
<numero>3</numero>
<fpage>146</fpage>
<lpage>154</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0003-31702023000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0003-31702023000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0003-31702023000300003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción y objetivo: estudiar la asociación entre tabaquismo y el nivel de metilación de dos regiones genómicas en pacientes con enfermedad arterial periférica (EAP).  Método: estudio transversal de 297 pacientes (edad media: 69,6 años; varones: 78,5 %) diagnosticados de isquemia crónica de extremidades inferiores en diferentes estadios clínicos entre marzo de 2016 y diciembre de 2019 en el servicio de cirugía vascular del Hospital del Mar (Barcelona). Se analizó la metilación de Cg02156642 y de Cg03636183 asociados en otros estudios al tabaquismo. Se realizó una regresión lineal múltiple para discriminar las variables asociadas al nivel de metilación. Se calculó el área bajo la curva ROC para discriminar el nivel de metilación entre fumadores y no fumadores.  Resultados: de la muestra, 46 pacientes (15,5 %) eran no fumadores; 132 (44,4 %), exfumadores y 119 (40,1 %), fumadores. No se observó una asociación entre la exposición al tabaco y el nivel de metilación del Cg02156642, pero sí con el de Cg03636183: los fumadores presentaban menor nivel de metilación y, además, a más carga de tabaco menos metilación (Rho de Spearman: -0,324; p &lt; 0,001). Un nivel de metilación en este CpG del 80 % tiene una sensibilidad (S) del 90,0 % y una especificidad (E) del 83,5 % para discriminar entre fumadores y nunca fumadores. Para discriminar entre fumadores y exfumadores, un nivel de metilación del 75 % tiene una S del 69 % y una E del 56,9 %. Al ajustar por todas las variables relacionadas con la metilación, la magnitud de esta asociación entre Cg03636183 y tabaquismo se mantenía significativa entre los nunca fumadores y los fumadores.  Conclusiones: la metilación del cpg cg03636183 se asocia a tabaquismo en pacientes con eap y está directamente relacionada con la carga de tabaco. Este biomarcador podría utilizarse en la práctica clínica para valorar el consumo de tabaco de nuestros pacientes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction and objective: to study the association between smoking and the methylation level of 2 genomic regions in patients with peripheral artery disease (PAD).  Method: cross-sectional study of 297 patients (mean age, 69.6 years; males, 78.5%) diagnosed with chronic lower extremity ischemia at various clinical stages from March 2016 through December 2019 at the Vascular Surgery Unit of Hospital del Mar, Barcelona, Catalonia, Spain. Methylation analysis of Cg02156642 and Cg03636183, previously associated with smoking in former studies was performed. Multiple linear regression was conducted to identify variables associated with methylation levels. The area under the ROC curve was estimated to discriminate methylation levels between smokers and non-smokers.  Results: among the sample, 46 patients (15.5%) were non-smokers, 132 (44.4%) were former smokers, and 119 (40.1%) were current smokers. No association was seen between tobacco exposure and methylation levels of Cg02156642. However, an association was found with Cg03636183: smokers had lower methylation levels, and a higher smoking load was associated with lower methylation (Spearman's Rho, -0.324; p &lt; .001). A methylation level of 80% in this region showed a 90.0% sensitivity and an 83.5% specificity to discriminate between smokers and never smokers. To discriminate between smokers and former smokers, a methylation level of 75% had an 69% sensitivity and an 56.9% specificity. After adjusting for all variables associated with methylation, the association between Cg03636183 and smoking remained significant among never smokers and smokers.  Conclusions: methylation of the Cg03636183 region is associated with smoking in patients with PAD and is directly associated with the smoking load. This biomarker could be used in the routine clinical practice to assess tobacco use in our patients.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Metilación]]></kwd>
<kwd lng="es"><![CDATA[Isquemia crónica amenazante de miembros inferiores]]></kwd>
<kwd lng="es"><![CDATA[Tabaquismo]]></kwd>
<kwd lng="en"><![CDATA[Methylation]]></kwd>
<kwd lng="en"><![CDATA[Chronic limb-threatening ischemia]]></kwd>
<kwd lng="en"><![CDATA[Smoking]]></kwd>
</kwd-group>
</article-meta>
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