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            "entidad" => "Unidad de Medicina Molecular&#44; Departamento de Medicina&#44; Universidad de Salamanca&#46; Instituto de Investigaci&#243;n Biom&#233;dica de Salamanca-IBSAL&#44; Salamanca&#44; Espa&#241;a"
            "etiqueta" => "b"
            "identificador" => "aff0010"
          ]
          2 => array:3 [
            "entidad" => "Unidad de Alcoholismo&#44; Departamento de Medicina Interna&#44; Hospital Universitario de Salamanca&#46; Instituto de Investigaci&#243;n Biom&#233;dica de Salamanca-IBSAL&#44; Salamanca&#44; Espa&#241;a"
            "etiqueta" => "c"
            "identificador" => "aff0015"
          ]
        ]
        "correspondencia" => array:1 [
          0 => array:3 [
            "identificador" => "cor0005"
            "etiqueta" => "&#63;"
            "correspondencia" => "Autor para correspondencia&#46;"
          ]
        ]
      ]
    ]
    "titulosAlternativos" => array:1 [
      "en" => array:1 [
        "titulo" => "Analysis of the relationship between interleukin polymorphisms within miRNA-binding regions and alcoholic liver disease"
      ]
    ]
    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Introducci&#243;n</span><p id="par0005" class="elsevierStylePara elsevierViewall">La predisposici&#243;n gen&#233;tica juega un papel importante en la susceptibilidad para el desarrollo de alcoholismo<a class="elsevierStyleCrossRef" href="#bib0215"><span class="elsevierStyleSup">1</span></a> o da&#241;os org&#225;nicos inducidos por el alcohol<a class="elsevierStyleCrossRef" href="#bib0220"><span class="elsevierStyleSup">2</span></a>&#46; En lo que respecta a la susceptibilidad para el desarrollo de alcoholismo&#44; estudios de asociaci&#243;n previos se han centrado&#44; en su mayor&#237;a&#44; en los genes candidatos con posible compromiso de sistemas de recompensa cerebral<a class="elsevierStyleCrossRef" href="#bib0225"><span class="elsevierStyleSup">3</span></a>&#46; En el caso de la enfermedad hep&#225;tica alcoh&#243;lica &#40;EHA&#41;&#44; anteriores estudios gen&#233;ticos se han ocupado&#44; principalmente&#44; de analizar las variantes de los genes codificadores de enzimas hep&#225;ticas<a class="elsevierStyleCrossRefs" href="#bib0230"><span class="elsevierStyleSup">4&#44;5</span></a> o de mediadores de la respuesta inflamatoria<a class="elsevierStyleCrossRef" href="#bib0240"><span class="elsevierStyleSup">6</span></a>&#46; No obstante&#44; en ambos casos se desconoce el conjunto de genes implicados en la susceptibilidad gen&#233;tica a estas enfermedades&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">Los polimorfismos de nucle&#243;tido &#250;nico &#40;SNP&#44; <span class="elsevierStyleItalic">Single Nucleotide Polymorphism</span>&#41; en los genes codificadores de las interleucinas &#40;IL&#41;&#44; o en los receptores interleuc&#237;nicos&#44; se han estudiado por su posible relaci&#243;n con la respuesta inflamatoria inducida por el alcohol&#46; En concreto&#44; se han estudiado los SNP de genes codificadores de IL implicadas en la v&#237;a de los receptores de tipo Toll<span class="elsevierStyleHsp" style=""></span>4 &#40;TLR4&#41; y el factor nuclear &#40;NF&#41;-&#63;B<a class="elsevierStyleCrossRefs" href="#bib0245"><span class="elsevierStyleSup">7-9</span></a>&#44; que es activada por el lipopolisac&#225;rido &#40;LPS&#41; bacteriano&#46; El consumo de alcohol aumenta los niveles en sangre de LPS<a class="elsevierStyleCrossRef" href="#bib0260"><span class="elsevierStyleSup">10</span></a>&#44; y la activaci&#243;n de la v&#237;a TLR4&#47;NF-&#63;B determina la secreci&#243;n de algunas citoquinas inflamatorias tales como el factor de necrosis tumoral alfa &#40;TNF-a&#41;&#44; que&#44; a su vez&#44; son capaces de activar la apoptosis&#44; aumentar los niveles de estr&#233;s oxidativo y provocar da&#241;o hep&#225;tico mediante la activaci&#243;n de las c&#233;lulas de Kupffer<a class="elsevierStyleCrossRefs" href="#bib0265"><span class="elsevierStyleSup">11-13</span></a>&#46; La importancia que tiene esta v&#237;a en la patog&#233;nesis de la EHA se ha establecido con claridad<a class="elsevierStyleCrossRef" href="#bib0280"><span class="elsevierStyleSup">14</span></a>&#44; y su posible relaci&#243;n con la dependencia del alcohol tambi&#233;n ha sido objeto de estudio<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">15</span></a>&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">Algunas mol&#233;culas de micro-ARN &#40;miARN&#41; juegan importantes papeles en la inflamaci&#243;n a trav&#233;s de la regulaci&#243;n de los mediadores de la v&#237;a TLR4&#47;NF-&#63;B<a class="elsevierStyleCrossRef" href="#bib0290"><span class="elsevierStyleSup">16</span></a>&#46; Por consiguiente&#44; los SNP localizados en genes de miARN o genes codificadores de IL ubicados cerca de sitios espec&#237;ficos de uni&#243;n a miARN son capaces de modificar la respuesta inflamatoria a diversos est&#237;mulos&#44; incluida la ingesta de alcohol<a class="elsevierStyleCrossRef" href="#bib0295"><span class="elsevierStyleSup">17</span></a>&#46; En concreto&#44; la variante al&#233;lica rs1368439 del gen codificador de la IL-12B <span class="elsevierStyleItalic">&#40;IL12B&#41;</span> se halla cerca del sitio de uni&#243;n para miR-23&#44; cuya asociaci&#243;n con la respuesta inflamatoria es conocida<a class="elsevierStyleCrossRefs" href="#bib0300"><span class="elsevierStyleSup">18-20</span></a>&#46; El polimorfismo rs1131445 del gen codificador de la IL-16 <span class="elsevierStyleItalic">&#40;IL16&#41;</span> se localiza en la regi&#243;n diana del miR-125&#44; que&#44; tambi&#233;n&#44; se asocia a la regulaci&#243;n de la inmunidad innata y la inflamaci&#243;n<a class="elsevierStyleCrossRef" href="#bib0315"><span class="elsevierStyleSup">21</span></a>&#46; La variante rs3917328 del gen codificador del receptor de IL-1 tipo 1 <span class="elsevierStyleItalic">&#40;IL1R1&#41;</span> se halla en una regi&#243;n diana del miR-19&#46; Potencialmente&#44; este SNP influye en la v&#237;a mediada por los receptores TLR4 por la similitud existente entre IL1R1 y dicho receptor<a class="elsevierStyleCrossRefs" href="#bib0320"><span class="elsevierStyleSup">22&#44;23</span></a>&#46; Por &#250;ltimo&#44; la variante al&#233;lica rs4648143 del gen codificador del factor nuclear NF-&#63;B subunidad 1 <span class="elsevierStyleItalic">&#40;NFKB1&#41;</span> se encuentra cerca de la regi&#243;n diana del miR-557<a class="elsevierStyleCrossRefs" href="#bib0320"><span class="elsevierStyleSup">22&#44;23</span></a>&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">A la luz de estos datos&#44; planteamos la hip&#243;tesis de que los citados SNP podr&#237;an&#44; por tanto&#44; modular la inflamaci&#243;n inducida por el alcohol y modificar el riesgo de da&#241;o inducido por el mismo&#46; El presente estudio se dise&#241;&#243;&#44; por todo ello&#44; para analizar posibles relaciones entre el alcoholismo o la EHA y los polimorfismos <span class="elsevierStyleItalic">IL12B</span> 2124 G&#62;T &#40;rs1368439&#41;&#44; <span class="elsevierStyleItalic">IL16</span> 5000 C&#62;T &#40;rs1131445&#41;&#44; <span class="elsevierStyleItalic">IL1R1</span> 3114 C&#62;T &#40;rs3917328&#41; y <span class="elsevierStyleItalic">NFKB1</span> 3400 A&#62;G &#40;rs4648143&#41;&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Materiales y m&#233;todos</span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Pacientes y controles</span><p id="par0025" class="elsevierStylePara elsevierViewall">Fueron incluidos 301 pacientes varones alcoh&#243;licos &#40;media de edad&#58; 52&#44;2<span class="elsevierStyleHsp" style=""></span>a&#241;os&#44; desviaci&#243;n est&#225;ndar &#91;DE&#93;&#58; 14&#44;4<span class="elsevierStyleHsp" style=""></span>a&#241;os&#41; seguidos en la Unidad de Alcoholismo del Hospital Universitario de Salamanca y que hab&#237;an consumido m&#225;s de 100<span class="elsevierStyleHsp" style=""></span>g de alcohol al d&#237;a durante al menos 10<span class="elsevierStyleHsp" style=""></span>a&#241;os&#46; De estos&#44; 189 presentaban dependencia alcoh&#243;lica &#40;DA&#41; y 112 abuso del alcohol &#40;AA&#41;&#44; seg&#250;n los criterios de la cuarta edici&#243;n del Manual Diagn&#243;stico y Estad&#237;stico de Trastornos Mentales &#40;DSM-IV&#41;<a class="elsevierStyleCrossRef" href="#bib0330"><span class="elsevierStyleSup">24</span></a>&#46; Estos criterios eran los vigentes durante el per&#237;odo de estudio y se aplicaron mediante entrevistas semiestructuradas llevadas a cabo por personal experto&#46; Los pacientes con un diagn&#243;stico de adicci&#243;n a otras drogas &#40;aparte de la nicotina&#41;&#44; o con trastornos mayores del eje<span class="elsevierStyleHsp" style=""></span>I &#40;como&#44; por ejemplo&#44; esquizofrenia&#44; trastornos del estado de &#225;nimo o trastornos mayores de ansiedad&#41; establecidos tras examen psiqui&#225;trico integral&#44; fueron excluidos&#46; Un total de 103 pacientes presentaban cirrosis hep&#225;tica alcoh&#243;lica&#46; Se lleg&#243; al diagn&#243;stico de cirrosis tras biopsia hep&#225;tica en 93 pacientes y tras aplicar criterios cl&#237;nicos&#44; anal&#237;ticos y radiol&#243;gicos en 10 pacientes&#44; en los que la biopsia estaba contraindicada&#46; Los otros 198 pacientes alcoh&#243;licos fueron clasificados como sujetos sin EHA seg&#250;n criterios cl&#237;nicos&#44; anal&#237;ticos y radiol&#243;gicos&#46; Todos los pacientes dieron negativo en las determinaciones serol&#243;gicas para los virus de la hepatitis<span class="elsevierStyleHsp" style=""></span>C y<span class="elsevierStyleHsp" style=""></span>B&#46; Otras etiolog&#237;as de enfermedad hep&#225;tica fueron descartadas&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">El grupo de control lo formaban 156 voluntarios varones sanos &#40;media de edad&#58; 46&#44;7<span class="elsevierStyleHsp" style=""></span>a&#241;os&#44; DE&#58; 19&#44;5&#41;&#46; Todos ellos tomaban menos de 10<span class="elsevierStyleHsp" style=""></span>g de alcohol al d&#237;a&#46; Ni ellos ni ninguno de sus parientes de primera o segunda l&#237;nea consangu&#237;nea ten&#237;an antecedentes de AA o DA&#46;</p><p id="par0035" class="elsevierStylePara elsevierViewall">Todos los pacientes y los sujetos control proced&#237;an de Castilla y Le&#243;n &#40;noroeste de Espa&#241;a&#41; desde al menos tres generaciones y dieron su consentimiento informado para participar en el estudio&#46; El estudio se llev&#243; a cabo con la aprobaci&#243;n del Comit&#233; &#201;tico del Hospital Universitario de Salamanca&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">An&#225;lisis gen&#233;tico</span><p id="par0040" class="elsevierStylePara elsevierViewall">Se extrajo ADN gen&#243;mico de c&#233;lulas sangu&#237;neas nucleadas mediante digesti&#243;n con proteinasa<span class="elsevierStyleHsp" style=""></span>K&#44; extracci&#243;n con fenol-cloroformo y precipitaci&#243;n alcoh&#243;lica&#46; Las muestras se guardaron a -20<span class="elsevierStyleHsp" style=""></span>&#176;C hasta ser utilizadas&#44; posteriormente fueron analizadas simult&#225;neamente &#40;controles y pacientes con y sin EHA&#41; en placas de PCR&#44; a fin de garantizar la detecci&#243;n de forma ciega&#46; Los polimorfismos rs1368439&#44; rs1131445&#44; rs3917328 y rs4648143 fueron genotipados utilizando para ello las pruebas TaqMan MGB<span class="elsevierStyleSup"><span class="elsevierStyleBold">&#174;</span></span> de discriminaci&#243;n al&#233;lica con el sistema StepOnePlus<span class="elsevierStyleSup"><span class="elsevierStyleBold">&#174;</span></span> &#40;Applied Biosystems&#44; Foster City&#44; California&#44; EE&#46;UU&#46;&#41; y seg&#250;n el protocolo del fabricante&#46;</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">An&#225;lisis estad&#237;stico</span><p id="par0045" class="elsevierStylePara elsevierViewall">La distribuci&#243;n al&#233;lica y genot&#237;pica entre grupos se compar&#243; mediante el test &#63;<span class="elsevierStyleSup">2</span> o la prueba exacta de Fisher si el valor de frecuencia esperado &#60;<span class="elsevierStyleHsp" style=""></span>5&#46; La desviaci&#243;n del equilibrio de Hardy-Weinberg en las frecuencias genot&#237;picas entre los controles se analiz&#243; mediante la prueba &#63;<span class="elsevierStyleSup">2</span>&#46; Los valores p<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>0&#44;05 se consideraron valores significativos&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">Se realiz&#243; un an&#225;lisis comparativo entre pacientes alcoh&#243;licos y controles y tambi&#233;n entre pacientes con AA vs&#46; DA&#44; as&#237; como entre pacientes con cirrosis frente a pacientes sin EHA&#46; La contribuci&#243;n de las variantes gen&#233;ticas de cada fenotipo espec&#237;fico de forma significativa e independiente se valor&#243; mediante un an&#225;lisis de regresi&#243;n log&#237;stica&#44;a fin de determinar la herencia dominante o recesiva de los alelos espec&#237;ficos&#46; Utilizando como ejemplo el an&#225;lisis del polimorfismo <span class="elsevierStyleItalic">IL1R1</span>&#44; los efectos arbitrarios de los sujetos heterocigotos fueron incluidos en el modelo general&#46; Los tres posibles genotipos &#40;CC&#44; CT&#44; TT&#41; fueron denotados por tres variables simuladas &#40;0&#44; 1&#44; 2&#41;&#46; El modelo dominante se bas&#243; en la hip&#243;tesis de que los genotipos CT y TT contribu&#237;an por igual al riesgo de cirrosis alcoh&#243;lica&#44; siendo los genotipos codificados del siguiente modo&#58; CC<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0 y CT y TT<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>1&#46; El modelo recesivo no se calcul&#243; por la ausencia del genotipo TT entre los controles&#46; La fuerza de la asociaci&#243;n se calcul&#243; mediante <span class="elsevierStyleItalic">odds ratio</span> &#40;OR&#41; e intervalos de confianza &#40;IC&#41; del 95&#37;&#46; Los valores p<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>0&#44;05 se consideraron valores significativos&#46; Los an&#225;lisis se llevaron a cabo utilizando el software SPSS v&#46; 20&#46;0 &#40;IBM SPSS Statistics&#41;&#46;</p><p id="par0055" class="elsevierStylePara elsevierViewall">La potencia estad&#237;stica del presente estudio para detectar un polimorfismo confiriendo un OR de 2 para la presencia de alcoholismo se calcul&#243; utilizando el software PS&#58; Power and Sample Size Calculations&#44; v&#46; 3&#46;0&#46;43 &#40;http&#58;&#47;&#47;biostat&#46;mc&#46;vanderbilt&#46;edu&#47;twiki&#47;bin&#47;view&#47;Main&#47;PowerSampleSize&#41;<a class="elsevierStyleCrossRef" href="#bib0335"><span class="elsevierStyleSup">25</span></a>&#46; Asumiendo un valor a de 0&#44;05 y una prevalencia del alelo menos frecuente entre los controles de 0&#44;2&#44; la potencia estad&#237;stica fue del 81&#37; para la poblaci&#243;n del estudio &#40;pacientes alcoh&#243;licos&#44; n<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>301&#59; controles sanos&#44; n<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>156&#41;&#46;</p></span></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Resultados</span><p id="par0060" class="elsevierStylePara elsevierViewall">La distribuci&#243;n genot&#237;pica de los polimorfismos analizados entre los pacientes alcoh&#243;licos y los controles sanos puede verse en la <a class="elsevierStyleCrossRef" href="#tbl0005">tabla 1</a>&#46; Los individuos sanos presentaron frecuencias genot&#237;picas similares a las descritas previamente en poblaciones cauc&#225;sicas sanas&#46; No se hall&#243; desviaci&#243;n alguna del equilibrio de Hardy-Weinberg&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0065" class="elsevierStylePara elsevierViewall">Los polimorfismos <span class="elsevierStyleItalic">IL12B</span> 2124 G&#62;T &#40;rs1368439&#41;&#44; <span class="elsevierStyleItalic">IL16</span> 5000 C&#62;T &#40;rs1131445&#41; y <span class="elsevierStyleItalic">NFKB1</span> 3400 A&#62;G &#40;rs4648143&#41; no mostraron diferencia significativa alguna entre los grupos estudiados &#40;sujetos con trastornos por consumo de alcohol frente a controles sanos&#44; pacientes con AA frente a DA&#44; o pacientes con cirrosis alcoh&#243;lica frente a pacientes sin EHA&#41;&#46; En cambio&#44; la distribuci&#243;n al&#233;lica del polimorfismo <span class="elsevierStyleItalic">IL1R1</span> 3114 C&#62;T &#40;rs3917328&#41; revel&#243; que el porcentaje de portadores del alelo<span class="elsevierStyleHsp" style=""></span>T &#40;genotipos CT y TT&#41; fue mayor entre los controles &#40;9&#44;7&#37;&#41; que entre los pacientes alcoh&#243;licos &#40;6&#44;5&#37;&#59; p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;042&#41;&#46; En cualquier caso&#44; los an&#225;lisis de regresi&#243;n log&#237;stica multivariable no confirmaron esta diferencia &#40;<a class="elsevierStyleCrossRef" href="#tbl0010">tabla 2</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Discusi&#243;n</span><p id="par0070" class="elsevierStylePara elsevierViewall">En el presente estudio analizamos la relaci&#243;n entre los polimorfismos gen&#233;ticos rs1368439&#44; rs1131445&#44; rs3917328 y rs4648143 y la presencia de alcoholismo o EHA&#46; Nuestro abordaje&#44; similar al seguido por otros autores<a class="elsevierStyleCrossRefs" href="#bib0340"><span class="elsevierStyleSup">26&#44;27</span></a>&#44; se bas&#243; en seleccionar polimorfismos atendiendo a su ubicaci&#243;n cerca de sitios espec&#237;ficos de uni&#243;n miARN asociados&#44; potencialmente&#44; al alcoholismo o a la EHA<a class="elsevierStyleCrossRefs" href="#bib0295"><span class="elsevierStyleSup">17&#44;28&#44;29</span></a>&#46; A pesar del posible papel que juegan estos polimorfismos en el alcoholismo y&#44; en concreto&#44; en el desarrollo de la EHA<a class="elsevierStyleCrossRefs" href="#bib0360"><span class="elsevierStyleSup">30-32</span></a>&#44; no hallamos ninguna asociaci&#243;n significativa a este respecto&#46;</p><p id="par0075" class="elsevierStylePara elsevierViewall">Desde una perspectiva general&#44; nuestros resultados pueden explicarse&#44; en un principio&#44; por la verdadera ausencia de un nexo entre los polimorfismos analizados y estas enfermedades&#58; los polimorfismos seleccionados podr&#237;an no influir de manera significativa en la funci&#243;n de las citoquinas&#44; o ejercer una influencia que dependiera de otros posibles factores gen&#233;ticos o medioambientales asociados a la funci&#243;n de las interleucinas&#46; La complejidad de la regulaci&#243;n de los miARN podr&#237;a&#44; tambi&#233;n&#44; explicar nuestro resultado&#46; Cada miARN se une a varias dianas en diferentes genes&#44; y se sabe que cada sitio de uni&#243;n a trav&#233;s de los que ejercen su acci&#243;n es blanco de varios miARN<a class="elsevierStyleCrossRef" href="#bib0375"><span class="elsevierStyleSup">33</span></a>&#46; De ah&#237; que una variaci&#243;n en un &#250;nico SNP pudiera no ser suficiente para provocar una alteraci&#243;n en la funci&#243;n de las prote&#237;nas codificadas&#46; Por &#250;ltimo&#44; la ausencia de una relaci&#243;n significativa en nuestro estudio podr&#237;a deberse a las limitaciones espec&#237;ficas de los estudios de asociaci&#243;n caso-control&#46; En cualquier caso&#44; factores como la estratificaci&#243;n poblacional u otros posibles factores de confusi&#243;n parece poco probable&#46; Se realizaron ajustes en el an&#225;lisis estad&#237;stico para controlar posibles factores de confusi&#243;n &#40;como&#44; por ejemplo&#44; la edad o el sexo&#41;&#44; y las frecuencias al&#233;licas de nuestra poblaci&#243;n fueron similares a las descritas anteriormente en poblaciones cauc&#225;sicas&#46; Lamentablemente&#44; no se recogieron muestras serol&#243;gicas ni tisulares para determinar las interleucinas ni los miARN en sangre o h&#237;gado&#44; lo cual nos habr&#237;a permitido entender mejor el papel que juegan estos SNP en la inflamaci&#243;n inducida por el alcohol&#46;</p><p id="par0080" class="elsevierStylePara elsevierViewall">En lo que a los polimorfismos <span class="elsevierStyleItalic">IL12B</span> y <span class="elsevierStyleItalic">IL16</span> hace referencia&#44; son pocos los estudios que han analizado la relaci&#243;n existente entre estas variantes gen&#233;ticas y el desarrollo de EHA o alcoholismo&#44; y en todo caso en ninguno de ellos se ha hallado una relaci&#243;n significativa<a class="elsevierStyleCrossRef" href="#bib0250"><span class="elsevierStyleSup">8</span></a>&#46; Aunque ambas citoquinas parecen jugar un papel en el da&#241;o inducido por el alcohol<a class="elsevierStyleCrossRefs" href="#bib0380"><span class="elsevierStyleSup">34&#44;35</span></a>&#44; su relevancia podr&#237;a no ser suficiente para modular la susceptibilidad gen&#233;tica a estas enfermedades&#46; En cambio&#44; las variantes gen&#233;ticas del <span class="elsevierStyleItalic">NFKB1</span> s&#237; se han asociado al desarrollo de DA o EHA en anteriores estudios<a class="elsevierStyleCrossRefs" href="#bib0370"><span class="elsevierStyleSup">32&#44;36</span></a>&#44; y la relaci&#243;n que existe entre el NF-&#63;B y la inflamaci&#243;n inducida por el alcohol es uno de los mecanismos fundamentales de regulaci&#243;n de la v&#237;a de los receptores TLR4 en estas enfermedades&#46; De ah&#237; que la falta de significaci&#243;n en el an&#225;lisis del polimorfismo <span class="elsevierStyleItalic">NFKB1</span> &#40;rs4648143&#41; pudiera explicarse por la baja frecuencia del alelo menor observado en este SNP&#44; o bien por la falta de efecto de esta variante gen&#233;tica espec&#237;fica&#46;</p><p id="par0085" class="elsevierStylePara elsevierViewall">En lo que al polimorfismo <span class="elsevierStyleItalic">IL1R1</span> hace referencia&#44; se hall&#243; una frecuencia m&#225;s alta del alelo<span class="elsevierStyleHsp" style=""></span>T en controles sanos que en pacientes alcoh&#243;licos&#46; Este resultado no fue significativo tras el an&#225;lisis multivariable que se realiz&#243;&#44; en el que introdujimos la edad como posible factor de confusi&#243;n&#46; No obstante&#44; anteriores estudios han confirmado la implicaci&#243;n de la IL-1 y su receptor en la EHA y el alcoholismo<a class="elsevierStyleCrossRefs" href="#bib0365"><span class="elsevierStyleSup">31&#44;37</span></a>&#44; y esta es una relaci&#243;n biol&#243;gicamente plausible&#46; La funci&#243;n del IL1R1 est&#225; &#237;ntimamente vinculada con la v&#237;a TLR4&#47;NF-&#63;B por las estructuras an&#225;logas de ambos receptores&#58; el IL1R1 puede verse estimulado por los mismos mediadores inflamatorios que los receptores TLR4&#44; como la quinasa<span class="elsevierStyleHsp" style=""></span>1 asociada al receptor<span class="elsevierStyleHsp" style=""></span>1 de la interleucina&#44; o el factor 6 asociado al receptor del TNF<a class="elsevierStyleCrossRefs" href="#bib0400"><span class="elsevierStyleSup">38-40</span></a>&#46; Adem&#225;s&#44; el LPS bacteriano puede activar ambos receptores<a class="elsevierStyleCrossRef" href="#bib0415"><span class="elsevierStyleSup">41</span></a>&#46; La IL-1 tiene&#44; adem&#225;s&#44; una funci&#243;n relevante en la respuesta inflamatoria que lleva a desarrollar esteatohepatitis alcoh&#243;lica<a class="elsevierStyleCrossRef" href="#bib0420"><span class="elsevierStyleSup">42</span></a>&#46; A la luz de estos datos&#44; parece plausible que los cambios en la funci&#243;n de IL1R1&#44; como los inducidos por la presencia de SNP&#44; pudiesen acarrear un incremento de la respuesta inflamatoria&#46; La mayor frecuencia del alelo<span class="elsevierStyleHsp" style=""></span>T en los controles sanos podr&#237;a&#44; por lo tanto&#44; interpretarse como un posible factor protector del desarrollo de alcoholismo y EHA&#44; raz&#243;n por la cual estudios complementarios estar&#225;n plenamente justificados a fin de analizar esta relaci&#243;n junto con la de otros polimorfismos de IL-1 y IL1R1&#46;</p></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Conclusiones</span><p id="par0090" class="elsevierStylePara elsevierViewall">Aunque negativos&#44; los resultados descritos en el presente estudio arrojan luz sobre la importancia de los miARN y los polimorfismos en sitios de uni&#243;n para miARN en el alcoholismo y la EHA&#46; Nuestro estudio describe&#44; por primera vez&#44; las frecuencias esperadas de ciertos polimorfismos en pacientes alcoh&#243;licos con y sin EHA&#46; Otras investigaciones&#44; a este respecto&#44; deber&#225;n aclarar su posible importancia en el desarrollo del alcoholismo y la EHA&#46;</p></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Financiaci&#243;n</span><p id="par0095" class="elsevierStylePara elsevierViewall">Estudio financiado por el Ministerio de Ciencia e Innovaci&#243;n de Espa&#241;a&#44; Instituto de Salud Carlos<span class="elsevierStyleHsp" style=""></span>III y los fondos FEDER de la Uni&#243;n Europea&#44; &#171;Una manera de hacer Europa&#187; &#40;becas n&#250;mero PI16&#47;01548 para M&#46;M&#46; y PI10&#47;00219 para RG-S&#41;&#44; Instituto de Investigaci&#243;n Biom&#233;dica de Salamanca II14&#47;0006 para M&#46;M&#46;&#44; Junta de Castilla y Le&#243;n INT&#47;M&#47;17&#47;17 para M&#46;M&#46; y la Red de Trastornos Adictivos-RTA &#40;beca n&#250;mero RD12&#47;0028&#47;0008 para F&#46;-J&#46;L&#46;&#41;&#46;</p></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Conflicto de intereses</span><p id="par0100" class="elsevierStylePara elsevierViewall">Los autores declaran no tener ning&#250;n conflicto de intereses&#46;</p></span></span>"
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            1 => "Genetic polymorphism"
            2 => "Alcoholic liver disease"
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        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Introducci&#243;n</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">El consumo de alcohol induce una respuesta inflamatoria mediada por los receptores de tipo Toll<span class="elsevierStyleHsp" style=""></span>4 &#40;TLR4&#41; y el factor nuclear &#40;NF&#41;-&#63;B&#44; originando da&#241;o org&#225;nico&#46; Algunos micro-ARN &#40;miARN&#41; modulan la respuesta inflamatoria mediante retroalimentaci&#243;n negativa de mediadores como las interleucinas &#40;IL&#41;&#46; As&#237; pues&#44; polimorfismos en los genes de algunas IL localizados cerca de las dianas de los miARN podr&#237;an modificar el riesgo de da&#241;o org&#225;nico inducido por el alcohol&#46; Este estudio analiz&#243; la posible relaci&#243;n entre el alcoholismo o la enfermedad hep&#225;tica alcoh&#243;lica &#40;EHA&#41; y los polimorfismos <span class="elsevierStyleItalic">IL12B</span> 2124 G&#62;T &#40;rs1368439&#41;&#44; <span class="elsevierStyleItalic">IL16</span> 5000 <span class="elsevierStyleSmallCaps">C</span>&#62;T &#40;rs1131445&#41;&#44; <span class="elsevierStyleItalic">IL1R1</span> 3114 C&#62;T &#40;rs3917328&#41; y <span class="elsevierStyleItalic">NFKB1</span> 3400 A&#62;G &#40;rs4648143&#41;&#46;</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Pacientes y m&#233;todos</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Se incluyeron 301 pacientes alcoh&#243;licos varones y 156 voluntarios sanos varones&#46; Los polimorfismos fueron genotipados mediante discriminaci&#243;n al&#233;lica utilizando el sistema de PCR TaqMan<span class="elsevierStyleSup"><span class="elsevierStyleBold">&#174;</span></span>&#46; Se compararon las frecuencias al&#233;licas y genot&#237;picas entre grupos y se realiz&#243; un an&#225;lisis de regresi&#243;n log&#237;stica para dilucidar el modelo de herencia&#46;</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Resultados</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">El an&#225;lisis del polimorfismo de <span class="elsevierStyleItalic">IL1R1</span> &#40;rs3917328&#41; mostr&#243; que la proporci&#243;n de portadores del alelo<span class="elsevierStyleHsp" style=""></span>T &#40;genotipos CT y TT&#41; era mayor en los controles sanos &#40;9&#44;7&#37;&#41; que en pacientes alcoh&#243;licos &#40;6&#44;5&#37;&#44; p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;042&#41;&#46; Sin embargo el an&#225;lisis de regresi&#243;n log&#237;stica no mostr&#243; resultados significativos&#46; No se encontraron diferencias significativas entre grupos con respecto al resto de polimorfismos estudiados&#46;</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conclusiones</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Nuestro estudio describe&#44; por primera vez&#44; las frecuencias esperadas de polimorfismos en regiones diana de miARN en pacientes alcoh&#243;licos con y sin EHA&#46; Ser&#225;n necesarios nuevos estudios para aclarar la relevancia de estos polimorfismos en el desarrollo de alcoholismo o EHA&#46;</p></span>"
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        "resumen" => "<span id="abst0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Introduction</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Alcohol consumption promotes inflammation through the Toll-like receptor 4 &#40;TLR4&#41;&#47;nuclear factor &#40;NF&#41;-&#63;B pathway&#44; leading to organic damage&#46; Some micro-RNA &#40;miRNA&#41; molecules modulate this inflammatory response by downregulating TLR4&#47;NF-&#63;B pathway mediators&#44; like interleukins &#40;ILs&#41;&#46; Thus&#44; polymorphisms within IL genes located near miRNA binding sites could modify the risk of ethanol-induced damage&#46; The present study analyzed potential relationships between alcoholism or alcoholic liver disease &#40;ALD&#41; and <span class="elsevierStyleItalic">IL12B</span> 2124 G&#62;T &#40;rs1368439&#41;&#44; <span class="elsevierStyleItalic">IL16</span> 5000 C&#62;T &#40;rs1131445&#41;&#44; <span class="elsevierStyleItalic">IL1R1</span> 3114 C&#62;T &#40;rs3917328&#41;&#44; and <span class="elsevierStyleItalic">NFKB1</span> 3400 A&#62;G &#40;rs4648143&#41; polymorphisms&#46;</p></span> <span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Patients and methods</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">The study included 301 male alcoholic patients and 156 male healthy volunteers&#46; Polymorphisms were genotyped using TaqMan<span class="elsevierStyleSup"><span class="elsevierStyleBold">&#174;</span></span> PCR assays for allelic discrimination&#46; Allele and genotype frequencies were compared between groups&#46; Logistic regression analysis was performed to analyze the inheritance model&#46;</p></span> <span id="abst0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Results</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Analysis of the <span class="elsevierStyleItalic">IL1R1</span> &#40;rs3917328&#41; polymorphism showed that the proportion of allele<span class="elsevierStyleHsp" style=""></span>T carriers &#40;CT and TT genotypes&#41; was higher in healthy controls &#40;9&#46;7&#37;&#41; than in alcoholic patients &#40;6&#46;5&#37;&#59; <span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>&#46;042&#41;&#46; However&#44; multivariable logistic regression analyses did not yield a significant result&#46; No differences between groups were found for other analyzed polymorphisms&#46;</p></span> <span id="abst0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Conclusions</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Our study describes&#44; for the first time&#44; the expected frequencies of certain polymorphisms within miRNA-binding sites in alcoholic patients with and without ALD&#46; Further studies should be developed to clarify the potential relevance of these polymorphisms in alcoholism and ALD development&#46;</p></span>"
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          "leyenda" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">AC&#58; pacientes alcoh&#243;licos con cirrosis&#59; SEHA&#58; pacientes alcoh&#243;licos sin enfermedad hep&#225;tica alcoh&#243;lica&#59; TCA&#58; pacientes con trastornos por consumo de alcohol&#46;</p>"
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                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">5 &#40;2&#44;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>GT &#43; GG&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">93 &#40;31&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">43 &#40;28&#44;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;741&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">26 &#40;25&#44;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">67 &#40;33&#44;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;756&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="7" align="left" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="7" align="left" valign="top"><span class="elsevierStyleItalic">IL16 rs1131445</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>TT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">109 &#40;36&#44;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">62 &#40;39&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " rowspan="3" align="left" valign="top">0&#44;356</td><td class="td" title="table-entry  " align="left" valign="top">40 &#40;38&#44;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">69 &#40;34&#44;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " rowspan="3" align="left" valign="top">0&#44;431</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">146 &#40;48&#44;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">65 &#40;41&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">51 &#40;49&#44;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">95 &#40;48&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CC&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">46 &#40;15&#44;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">29 &#40;18&#44;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">12 &#40;11&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">34 &#40;17&#44;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CT &#43; CC&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">192 &#40;63&#44;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">94 &#40;60&#44;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;460&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">63 &#40;61&#44;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">129 &#40;65&#44;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;495&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="7" align="left" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="7" align="left" valign="top"><span class="elsevierStyleItalic">IL1R1 rs3917328</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CC&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">264 &#40;87&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">125 &#40;80&#44;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " rowspan="3" align="left" valign="top">0&#44;042</td><td class="td" title="table-entry  " align="left" valign="top">88 &#40;85&#44;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">176 &#40;88&#44;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " rowspan="3" align="left" valign="top">0&#44;236</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">35 &#40;11&#44;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">30 &#40;19&#44;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">15 &#40;14&#44;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">20 &#40;10&#44;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>TT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">2 &#40;0&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0 &#40;0&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0 &#40;0&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">2 &#40;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CT &#43; TT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">37 &#40;12&#44;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">30 &#40;19&#44;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;044<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">15 &#40;14&#44;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">22 &#40;11&#44;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;387&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="7" align="left" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="7" align="left" valign="top"><span class="elsevierStyleItalic">NFKB rs4648143</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>GG&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">299 &#40;99&#44;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">152 &#40;98&#44;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " rowspan="3" align="left" valign="top">0&#44;217</td><td class="td" title="table-entry  " align="left" valign="top">102 &#40;99&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">197 &#40;99&#44;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " rowspan="3" align="left" valign="top">0&#44;646</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>GA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">2 &#40;0&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">3 &#40;1&#44;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1 &#40;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1 &#40;0&#44;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>AA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0 &#40;0&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0 &#40;0&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0 &#40;0&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0 &#40;0&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>GA &#43; AA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">2 &#40;0&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">3 &#40;1&#44;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;217&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1 &#40;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1 &#40;0&#44;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;646&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab1737882.png"
              ]
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          "notaPie" => array:1 [
            0 => array:3 [
              "identificador" => "tblfn0005"
              "etiqueta" => "a"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0005">La presencia del alelo T del polimorfismo <span class="elsevierStyleItalic">IL1R1</span> revel&#243; una distribuci&#243;n muy distinta en pacientes con TCA&#44; comparados con los controles &#40;p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;044&#41;&#46;</p> <p class="elsevierStyleNotepara" id="npar0010">Los datos se expresan en frecuencias absolutas &#40;&#37;&#41;&#46;</p>"
            ]
          ]
        ]
        "descripcion" => array:1 [
          "es" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">Comparativa de frecuencias genot&#237;pica y al&#233;lica de los polimorfismos <span class="elsevierStyleItalic">IL12B</span>&#44; <span class="elsevierStyleItalic">IL16</span>&#44; <span class="elsevierStyleItalic">IL1R1</span> y <span class="elsevierStyleItalic">NFKB</span> entre pacientes con trastornos por consumo de alcohol y controles</p>"
        ]
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        "identificador" => "tbl0010"
        "etiqueta" => "Tabla 2"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "detalles" => array:1 [
          0 => array:3 [
            "identificador" => "at2"
            "detalle" => "Tabla "
            "rol" => "short"
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        "tabla" => array:2 [
          "leyenda" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">IC&#58; intervalo de confianza&#59; NC&#58; no calculado por la ausencia del genotipo TT en los controles&#59; OR&#58; odds ratio&#59; TCA&#58; trastornos por consumo de alcohol&#46;</p><p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Los datos se expresan en frecuencias absolutas &#40;&#37;&#41;&#46;</p><p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">El modelo recesivo no se calcul&#243; por la ausencia del genotipo TT en los controles&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="" valign="top" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="" valign="top" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " colspan="3" align="center" valign="top" scope="col" style="border-bottom: 2px solid black">An&#225;lisis multivariable</th></tr><tr title="table-row"><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Modelo&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Pacientes con TCA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Controles&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">OR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">IC del 95&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">p&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " colspan="6" align="left" valign="top"><span class="elsevierStyleItalic">General</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CC&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">264 &#40;87&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">125 &#40;80&#44;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Referencia&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">35 &#40;11&#44;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">30 &#40;19&#44;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;624&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;358-1&#44;087&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;096&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>TT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">2 &#40;0&#44;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0 &#40;0&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">NC&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">NC&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&#44;999&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="6" align="left" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="6" align="left" valign="top"><span class="elsevierStyleItalic">Dominante</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>CC&nbsp;\t\t\t\t\t\t\n
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Vol. 218. Issue 4.
Pages 170-176 (May 2018)
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Vol. 218. Issue 4.
Pages 170-176 (May 2018)
Original
Análisis de la relación entre polimorfismos en regiones diana de micro-ARN y la enfermedad hepática alcohólica
Analysis of the relationship between interleukin polymorphisms within miRNA-binding regions and alcoholic liver disease
I. Novo-Veleiroa, C. Cieza-Borrellab, I. Pastorc, R. González-Sarmientob, F.-J. Lasoc,, M. Marcosc,
,
a Departamento de Medicina Interna, Hospital Universitario Santiago de Compostela, Santiago de Compostela, La Coruña, España
b Unidad de Medicina Molecular, Departamento de Medicina, Universidad de Salamanca. Instituto de Investigación Biomédica de Salamanca-IBSAL, Salamanca, España
c Unidad de Alcoholismo, Departamento de Medicina Interna, Hospital Universitario de Salamanca. Instituto de Investigación Biomédica de Salamanca-IBSAL, Salamanca, España
Related content
Rev Clin Esp. 2018;218:190-110.1016/j.rce.2018.03.007
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Abstract
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Tables (2)
Tabla 1. Comparativa de frecuencias genotípica y alélica de los polimorfismos IL12B, IL16, IL1R1 y NFKB entre pacientes con trastornos por consumo de alcohol y controles
Tabla 2. Frecuencias genotípicas del polimorfismo C>T IL1R1 y análisis de regresión logística en pacientes con trastornos por consumo de alcohol
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Resumen
Introducción

El consumo de alcohol induce una respuesta inflamatoria mediada por los receptores de tipo Toll4 (TLR4) y el factor nuclear (NF)-?B, originando daño orgánico. Algunos micro-ARN (miARN) modulan la respuesta inflamatoria mediante retroalimentación negativa de mediadores como las interleucinas (IL). Así pues, polimorfismos en los genes de algunas IL localizados cerca de las dianas de los miARN podrían modificar el riesgo de daño orgánico inducido por el alcohol. Este estudio analizó la posible relación entre el alcoholismo o la enfermedad hepática alcohólica (EHA) y los polimorfismos IL12B 2124 G>T (rs1368439), IL16 5000 C>T (rs1131445), IL1R1 3114 C>T (rs3917328) y NFKB1 3400 A>G (rs4648143).

Pacientes y métodos

Se incluyeron 301 pacientes alcohólicos varones y 156 voluntarios sanos varones. Los polimorfismos fueron genotipados mediante discriminación alélica utilizando el sistema de PCR TaqMan®. Se compararon las frecuencias alélicas y genotípicas entre grupos y se realizó un análisis de regresión logística para dilucidar el modelo de herencia.

Resultados

El análisis del polimorfismo de IL1R1 (rs3917328) mostró que la proporción de portadores del aleloT (genotipos CT y TT) era mayor en los controles sanos (9,7%) que en pacientes alcohólicos (6,5%, p=0,042). Sin embargo el análisis de regresión logística no mostró resultados significativos. No se encontraron diferencias significativas entre grupos con respecto al resto de polimorfismos estudiados.

Conclusiones

Nuestro estudio describe, por primera vez, las frecuencias esperadas de polimorfismos en regiones diana de miARN en pacientes alcohólicos con y sin EHA. Serán necesarios nuevos estudios para aclarar la relevancia de estos polimorfismos en el desarrollo de alcoholismo o EHA.

Palabras clave:
Interleucina
Polimorfismo genético
Enfermedad hepática alcohólica
Alcoholismo
Respuesta inflamatoria
Abstract
Introduction

Alcohol consumption promotes inflammation through the Toll-like receptor 4 (TLR4)/nuclear factor (NF)-?B pathway, leading to organic damage. Some micro-RNA (miRNA) molecules modulate this inflammatory response by downregulating TLR4/NF-?B pathway mediators, like interleukins (ILs). Thus, polymorphisms within IL genes located near miRNA binding sites could modify the risk of ethanol-induced damage. The present study analyzed potential relationships between alcoholism or alcoholic liver disease (ALD) and IL12B 2124 G>T (rs1368439), IL16 5000 C>T (rs1131445), IL1R1 3114 C>T (rs3917328), and NFKB1 3400 A>G (rs4648143) polymorphisms.

Patients and methods

The study included 301 male alcoholic patients and 156 male healthy volunteers. Polymorphisms were genotyped using TaqMan® PCR assays for allelic discrimination. Allele and genotype frequencies were compared between groups. Logistic regression analysis was performed to analyze the inheritance model.

Results

Analysis of the IL1R1 (rs3917328) polymorphism showed that the proportion of alleleT carriers (CT and TT genotypes) was higher in healthy controls (9.7%) than in alcoholic patients (6.5%; P=.042). However, multivariable logistic regression analyses did not yield a significant result. No differences between groups were found for other analyzed polymorphisms.

Conclusions

Our study describes, for the first time, the expected frequencies of certain polymorphisms within miRNA-binding sites in alcoholic patients with and without ALD. Further studies should be developed to clarify the potential relevance of these polymorphisms in alcoholism and ALD development.

Keywords:
Interleukin
Genetic polymorphism
Alcoholic liver disease
Alcoholism
Inflammatory response

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