<?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>1688-423X</journal-id>
<journal-title><![CDATA[Archivos de Medicina Interna]]></journal-title>
<abbrev-journal-title><![CDATA[Arch Med Int]]></abbrev-journal-title>
<issn>1688-423X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad de Medicina Interna del Uruguay]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1688-423X2014000300003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Primer caso de falla hepática aguda por virus de la Hepatitis E en Uruguay]]></article-title>
<article-title xml:lang="en"><![CDATA[First case of Hepatitis E Virus- induced acute liver failure in Uruguay]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mainardi]]></surname>
<given-names><![CDATA[Victoria]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ardao]]></surname>
<given-names><![CDATA[Gonzalo]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mirazo]]></surname>
<given-names><![CDATA[Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[D'Albora]]></surname>
<given-names><![CDATA[Cecilia]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[Marcelo]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gaibizzo]]></surname>
<given-names><![CDATA[Rossana]]></given-names>
</name>
<xref ref-type="aff" rid="A05"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gerona]]></surname>
<given-names><![CDATA[Solange]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,HCFFAA Servicio de Enfermedades Hepáticas UDA Centro Nacional Hepato-Bilio-Pancreático]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="A02">
<institution><![CDATA[,HCFFAA Servicio de Enfermedades Hepáticas UDA Centro Nacional Hepato-Bilio-Pancreático]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="A03">
<institution><![CDATA[,UdelaR Facultad de Ciencias Laboratorio de Virología]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A04">
<institution><![CDATA[,UdelaR Facultad de Facultad Hospital de Clínicas]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A05">
<institution><![CDATA[,UdelaR Medica Uruguaya ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>11</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>11</month>
<year>2014</year>
</pub-date>
<volume>36</volume>
<numero>3</numero>
<fpage>111</fpage>
<lpage>114</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_arttext&amp;pid=S1688-423X2014000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_abstract&amp;pid=S1688-423X2014000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_pdf&amp;pid=S1688-423X2014000300003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La infección por el Virus de la Hepatitis E (VHE) en individuos inmunocompetentes generalmente se presenta como hepatitis aguda autolimitada. En determinados escenarios clínicos (embarazadas y pacientes con enfermedad hepática crónica) puede manifestarse como falla hepática aguda. Se han descripto casos de hepatitis crónica en inmunocomprometidos. En Uruguay se han reportado 14 casos de hepatitis aguda autolimitada por VHE. En el presente artículo se describe el primer caso de falla hepática aguda por VHE en Uruguay.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Hepatitis E Virus (HEV) typically causes an acute and self-limiting infection in immune-competent individuals, though acute liver failure is described in some settings (pregnancy, chronic liver disease). Chronic hepatitis has been described in immunosuppressed patients. Fourteen autochthonous cases of self-limiting acute hepatitis for HEV were reported in Uruguay. The first case of acute liver failure for HEV is described in the present article.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Virus de la Hepatitis E]]></kwd>
<kwd lng="es"><![CDATA[Falla hepática aguda]]></kwd>
<kwd lng="en"><![CDATA[Hepatitis E Virus]]></kwd>
<kwd lng="en"><![CDATA[Acute Liver Failure]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <div class="Section1">      <p><font face="Verdana" size="2"><span lang="ES-TRAD">Caso cl&iacute;nico</span></font></p>         <p>&nbsp;</p>           <p><font style="font-weight: bold;" size="4"> <span style="line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Primer caso de falla hep&aacute;tica aguda por virus de la Hepatitis E en Uruguay</span></font><b style=""><o:p></o:p></b></p>           <p style="font-weight: bold;"><span style="font-family: Verdana;" lang="EN-GB">First case of Hepatitis E Virus- induced acute liver failure in Uruguay</span></p>         <p></p>         <p><b style=""><span style="font-family: Verdana;" lang="EN-GB"><o:p></o:p></span></b></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Dra. Victoria <span class="SpellE">Mainardi</span><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">M&eacute;dica Internista. UDA Centro Nacional <span class="SpellE">Hepato</span>-<span class="SpellE">Bilio</span>-Pancre&aacute;tico - Servicio de Enfermedades Hep&aacute;ticas - HCFFAA. Montevideo, Uruguay. <o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           ]]></body>
<body><![CDATA[<p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Dr. Gonzalo <span class="SpellE">Ardao</span><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Jefe del Servicio de Anatom&iacute;a Patol&oacute;gica del HCFFAA. UDA Centro Nacional <span class="SpellE">Hepato</span>-<span class="SpellE">Bilio</span>-Pancre&aacute;tico - Servicio de Enfermedades Hep&aacute;ticas - HCFFAA. Montevideo, Uruguay.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Dr. Santiago <span class="SpellE">Mirazo</span><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Laboratorio de Virolog&iacute;a, Facultad de Ciencias, <span class="SpellE">UdelaR</span>. Montevideo, Uruguay.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Br</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">. Cecilia D&rsquo;Albora<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Laboratorio de Virolog&iacute;a. Facultad de Ciencias, <span class="SpellE">UdelaR</span>. Montevideo, Uruguay<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Dr. Marcelo Valverde<o:p></o:p></span></p>           ]]></body>
<body><![CDATA[<p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">M&eacute;dico Internista. Prof. Adj. de Cl&iacute;nica M&eacute;dica &ldquo;A&rdquo; - Hospital de Cl&iacute;nicas (Facultad de Medicina - <span class="SpellE">UdelaR</span>). UDA Centro Nacional <span class="SpellE">Hepato</span>-<span class="SpellE">Bilio</span>-Pancre&aacute;tico - Servicio de Enfermedades Hep&aacute;ticas - HCFFAA. Montevideo, Uruguay.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Dra. <span class="SpellE">Rossana</span> <span class="SpellE">Gaibizzo</span><o:p></o:p></span></p>           <p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Gastroenter&oacute;loga</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">. Medica <span class="GramE">Uruguaya</span>. Montevideo, Uruguay.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Dra. Solange Gerona<o:p></o:p></span></p>           <p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Gastroenter&oacute;loga</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"> - Hepat&oacute;loga. UDA Centro Nacional <span class="SpellE">Hepato</span>-<span class="SpellE">Bilio</span>-Pancre&aacute;tico - Servicio de Enfermedades Hep&aacute;ticas - HCFFAA. Jefa del Programa Nacional de Trasplante Hep&aacute;tico - Unidad <span class="SpellE">Bi</span>-Institucional Hospital de Cl&iacute;nicas - HCFFAA.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Recibido: 08/09/14 - Aceptado: 12/11/14.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Centros de trabajo: Laboratorio de Virolog&iacute;a, Facultad de Ciencias, <span class="SpellE">UdelaR</span> y UDA Centro Nacional <span class="SpellE">Hepato</span>-<span class="SpellE">Bilio</span>-Pancre&aacute;tico - Servicio de Enfermedades Hep&aacute;ticas - HCFFAA. Montevideo.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Correspondencia: Dra. Victoria <span class="SpellE">Mainardi</span>. E-mail: victoria_mainardi@hotmail.com. Tel&eacute;fono: 099597486.</span></p>        ]]></body>
<body><![CDATA[<p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><span style="font-weight: bold;">Resumen</span>:&nbsp;<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">La infecci&oacute;n por el Virus de la Hepatitis E (VHE) en individuos <span class="SpellE">inmunocompetentes</span> generalmente se presenta como hepatitis aguda autolimitada. En determinados escenarios cl&iacute;nicos (embarazadas y pacientes con enfermedad hep&aacute;tica cr&oacute;nica) puede manifestarse como falla hep&aacute;tica aguda. Se han <span class="SpellE">descripto</span> casos de hepatitis cr&oacute;nica en <span class="SpellE">inmunocomprometidos</span>. En Uruguay se han reportado 14 casos de hepatitis aguda autolimitada por VHE. En el presente art&iacute;culo se describe el primer caso de falla hep&aacute;tica aguda por VHE en Uruguay. <o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><span style="font-weight: bold;">Palabras clave</span>: Virus de la Hepatitis E, Falla hep&aacute;tica aguda.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><span style="font-weight: bold;">Abstract</span>:&nbsp;<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB">Hepatitis</span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-US"> E Virus (HEV) typically causes an acute and self-limiting infection in immune-competent individuals, though acute liver failure is described in some settings (pregnancy, chronic liver disease). Chronic hepatitis has been described in <span class="SpellE">immunosuppressed</span> patients. Fourteen autochthonous cases of self-limiting acute hepatitis for HEV were reported in Uruguay. The first case of acute liver failure for HEV is described in the present article. </span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><span style="font-weight: bold;">Keywords</span>: Hepatitis E Virus, Acute Liver Failure.<o:p></o:p></span></p>           ]]></body>
<body><![CDATA[<p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><span style="font-weight: bold;">Introducci&oacute;n</span><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">El VHE es causa de hepatitis aguda autolimitada en pacientes <span class="SpellE">inmunocompetentes</span>, con baja tasa de mortalidad (0,5-4%). En determinados escenarios cl&iacute;nicos tales como embarazadas y pacientes con enfermedad hep&aacute;tica cr&oacute;nica puede presentarse como falla hep&aacute;tica aguda con tasas de mortalidad de hasta 30%<sup>(</sup></span><a href="#1"><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">1</span></sup></b></a><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">-</span></sup><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a href="#5">5</a>)</span></sup></b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a name="1."></a><a name="2."></a><a name="3."></a><a name="4."></a><a name="5."></a>. En los &uacute;ltimos a&ntilde;os se han <span class="SpellE">descripto</span> casos de hepatitis cr&oacute;nica en <span class="SpellE">inmunocomprometidos</span>: receptores de trasplante de &oacute;rgano s&oacute;lido bajo tratamiento <span class="SpellE">inmunosupresor</span>, pacientes <span class="SpellE">hematooncol&oacute;gicos</span> y portadores del virus de inmunodeficiencia humana (VIH<span class="GramE">)<sup>(</sup></span></span><a href="#6"><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">6</span></sup></b></a><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">-</span></sup><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a href="#12">12</a>)</span></sup></b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a name="6."></a><a name="7."></a><a name="8."></a><a name="9."></a><a name="10."></a><a name="11."></a><a name="12."></a>. Recientemente se han reportado 2 casos de hepatitis cr&oacute;nica en pacientes aparentemente <span class="SpellE"><span class="GramE">inmunocompetentes</span></span><span class="GramE"><sup>(</sup></span></span><a href="#12"><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">12</span></sup></b></a><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">,</span></sup><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a href="#13">13</a>)</span></sup></b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a name="13."></a>. Existe un <span class="SpellE">subdiagn&oacute;stico</span> de la infecci&oacute;n por VHE, debido a que la mayor&iacute;a de los casos son <span class="SpellE">paucisintom&aacute;ticos</span>; en los casos de hepatitis aguda no siempre se realiza la b&uacute;squeda sistem&aacute;tica del mismo, y cuando se realiza los <span class="SpellE">test</span> diagn&oacute;sticos tienen una sensibilidad <span class="GramE">limitada<sup>(</sup></span><sup><big style="font-weight: bold;"><a href="#1"><font size="2">1</font></a><font size="2">-</font><a href="#3"><font size="2">3</font></a><!-- /big -->,</sup></span><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a href="#14">14</a>)</span></sup></b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a name="14."></a>. Se estima que 10% de las hepatitis agudas de etiolog&iacute;a indeterminada son debidas a VHE</span><a href="#15"><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">15</span></sup></b></a><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">.<a name="15."></a> Un estudio <span class="SpellE">seroepidemiol&oacute;gico</span> realizado en Uruguay encontr&oacute;</span><b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"> </span></b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">una <span class="SpellE">prevalencia</span> de 1,2% de anticuerpos <span class="SpellE">anti</span>-VHE en 252 donantes de sangre analizados y 2,8% en 214 pacientes ambulatorios</span><a href="#16"><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">16</span></sup></b></a><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a name="16."></a>.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Se describen 4 genotipos (Gen) de VHE en humanos con distinto perfil cl&iacute;nico y epidemiol&oacute;gico. Los Gen 1 y 2 se transmiten de forma fecal-oral, siendo responsables de grandes epidemias de hepatitis aguda, as&iacute;</span><b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"> </span></b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">como de casos espor&aacute;dicos en pa&iacute;ses en v&iacute;as de desarrollo (Gen 1 en Asia, &Aacute;frica, Cuba, Venezuela y recientemente Uruguay; Gen 2 en &Aacute;frica y M&eacute;xico). El Gen 1 se relaciona a alta mortalidad durante el embarazo. Los Gen 3 y 4 se encuentran <span class="SpellE">ademas</span> en cerdos y venados, existiendo una transmisi&oacute;n <span class="SpellE">zoon&oacute;tica</span> por consumo de carne poco cocida. Son responsables de casos espor&aacute;dicos de hepatitis aguda as&iacute;</span><b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"> </span></b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">como de hepatitis cr&oacute;nica (Gen 3) tanto en pa&iacute;ses desarrollados como en v&iacute;as de desarrollo. En Latinoam&eacute;rica predomina el Gen 3<sup>(<!-- big --><a style="font-weight: bold;" href="#1"><font size="2">1</font></a><font size="2"><span style="font-weight: bold;" class="GramE">,<a href="#2">2</a>,<a href="#17">17</a></span><span style="font-weight: bold;">-</span></font><a style="font-weight: bold;" href="#21"><font size="2">21</font></a><!-- /big -->)</sup>.<a name="17."></a><a name="18."></a><a name="19."></a><a name="20."></a><a name="21."></a><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Uruguay es considerado un pa&iacute;s de baja endemia. En el per&iacute;odo 2010-2011 se reportaron 13 casos aut&oacute;ctonos de hepatitis aguda autolimitada a VHE Gen 3 en adultos <span class="SpellE">inmunocompetentes</span>. Los pacientes no ten&iacute;an relaci&oacute;n entre ellos y la fuente de contagio no pudo ser identificada, no habi&eacute;ndose aislado hasta el momento VHE en cerdos <span class="GramE">aut&oacute;ctonos<sup>(</sup></span></span><a href="#22"><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">22</span></sup></b></a><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">,</span></sup><b><sup><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a href="#23">23</a>)</span></sup></b><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a name="22."></a><a name="23."></a>. El primer caso de infecci&oacute;n por VHE Gen 1 fue identificado en 2013, present&aacute;ndose tambi&eacute;n como una hepatitis aguda <span class="GramE">autolimitada<sup>(</sup></span><sup><!-- big --><a style="font-weight: bold;" href="#16"><font size="2">16</font></a><!-- /big -->)</sup>. <o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">A continuaci&oacute;n se describe el primer caso de falla hep&aacute;tica aguda en nuestro pa&iacute;s confirmado mediante determinaci&oacute;n de ARN de HEV por t&eacute;cnica de PCR, y con hallazgos histol&oacute;gicos caracter&iacute;sticos. <o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Caso cl&iacute;nico<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;">Sexo femenino, 16 a&ntilde;os, procedente de zona urbana, estudiante de ciclo b&aacute;sico. Vivienda con agua potable y saneamiento. Sin antecedentes ambientales a destacar. Niega consumo de derivados porcinos. No viajes al exterior en los &uacute;ltimos 45 d&iacute;as. Consumo ocasional de bebidas alcoh&oacute;licas, niega ingesta de f&aacute;rmacos, yuyos u hongos hepatot&oacute;xicos. Sin antecedentes personales patol&oacute;gicos ni ginecoobst&eacute;tricos, no ha iniciado relaciones sexuales. Sin antecedentes familiares de enfermedades hep&aacute;ticas ni autoinmunes. Consulta por ictericia en apirexia. Coluria y astenia en los d&iacute;as previos. No dolor abdominal. Al examen se destaca la ausencia de encefalopat&iacute;a y la palpaci&oacute;n de un h&iacute;gado aumentado de consistencia, sin otros estigmas de hepatopat&iacute;a cr&oacute;nica. En la anal&iacute;tica presenta un hepatograma alterado con transaminasas x 10 del l&iacute;mite superior de la normalidad (LSN), GGT y FAL x 3 del LSN, bilirubina de 30 mg/dl a predominio de la directa, y una disminuci&oacute;n del tiempo de protrombina de 42%. Ecograf&iacute;a hep&aacute;tica sin alteraciones. Con diagn&oacute;stico de falla hep&aacute;tica aguda ingresa a Cuidados Intermedios de su instituci&oacute;n, solicitando consulta con el Centro de Trasplante Hep&aacute;tico. De la anal&iacute;tica inicial destinada a la b&uacute;squeda etiol&oacute;gica se destaca: serolog&iacute;a para virus de hepatitis A (VHA), B (VHB) y C (VHC) negativos; Virus Epstein Barr (EBV), Citomegalovirus (CMV), VIH y leptospira negativos; proteinograma electrofor&eacute;tico sin aumento de las gamaglobulinas, anticuerpos de autoimnunidad hep&aacute;tica antim&uacute;sculo liso (ASMA), antimicrosomales tipo 1 de h&iacute;gado y ri&ntilde;&oacute;n (LKM-1), antimitocondriales (AMA) y antinucleares (ANA) negativos. Se solicit&oacute; serolog&iacute;a y determinaci&oacute;n de ARN por t&eacute;cnica de reacci&oacute;n en cadena de la polimerasa (PCR) en sangre y materia fecal para VHE de acuerdo al m&eacute;todo descrito por Mirazo et al</span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana; letter-spacing: -0.1pt;" lang="ES-TRAD"><span class="GramE"><a href="#22"><sup>(</sup></a></span><sup><a href="#22">22</a>)</sup>;  </span> <span style="font-size: 10pt; line-height: 120%; font-family: Verdana;">y ceruloplasmina, cupruria y examen oftalmol&oacute;gico con l&aacute;mpara de hendidura, para descartar Enfermedad de Wilson. El PCR en sangre y materia fecal a partir de an&aacute;lisis bioinform&aacute;ticos (MEGA 5.0 software) fue positivo, confirmando el diagn&oacute;stico de infecci&oacute;n por VHE Gen 3. La serolog&iacute;a, por su parte, result&oacute; negativa (Mikrogen recomLine HEV IgM/IgG, Alemania). La cupruria result&oacute; por encima del LSN, con ceruloplasmina normal y ausencia de anillo de Kayser-Fleischer en el examen oftalmol&oacute;gico. Ante la duda diagn&oacute;stica de Enfermedad de Wilson se realiz&oacute; una biopsia hep&aacute;tica que descarto dep&oacute;sitos de cobre y evidencio hallazgos t&iacute;picos de hepatitis por VHE </span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana; letter-spacing: -0.1pt;" lang="ES-TRAD">(<a href="#figura_1">Figura 1</a>),</span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;"> con hepatitis portal y periportal con infiltrado inflamatorio mixto, hepatocitos apopt&oacute;ticos y necrosis de interfase, colestasis con trombos biliares y colestasis intracelular que predomina en zona 3, y fibrosis portal con septos. &Iacute;ndice de actividad histol&oacute;gica 8/18 y estadio de fibrosis 3/6. La paciente evolucion&oacute; favorablemente con tratamiento de soporte, con mejor&iacute;a cl&iacute;nico-anal&iacute;tica completa, manteniendo seguimiento de forma ambulatoria </span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana; letter-spacing: -0.1pt;" lang="ES-TRAD"> (<a href="/img/revistas/ami/v36n3/3a03t1.jpg">Tabla I</a>).</span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p></o:p></span></p>           ]]></body>
<body><![CDATA[<p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>        <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p></o:p></span></p>        <p><font face="Verdana" size="2"><a name="figura_1"></a><img style="width: 505px; height: 541px;" alt="" src="/img/revistas/ami/v36n3/3a03f1.jpg"></font><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p></o:p></span></p>        <p>  <span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><span style="font-weight: bold;">Discusi&oacute;n</span><o:p></o:p></span><font face="Verdana" size="2"> </font></p>         <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;">El s&iacute;ndrome de hepatitis aguda se caracteriza por un conjunto de s&iacute;ntomas y signos (astenia, ictericia, dolor abdominal) asociado a alteraciones bioqu&iacute;micas (aumento de las transaminasas por encima de 10 veces el LSN), que puede ser causado por distintas entidades nosol&oacute;gicas. En primer lugar se debe categorizar la severidad de la hepatitis mediante la valoraci&oacute;n de signos de falla hep&aacute;tica: coagulopat&iacute;a y encefalopat&iacute;a. La presencia de un tiempo de protombina menor al 50% clasifica a la falla hep&aacute;tica aguda como grave; de ellas aproximadamente un 10% evolucionar&aacute;n a falla fulminante definida por la presencia de encefalopat&iacute;a, cuadro de elevada mortalidad que puede requerir un trasplante hep&aacute;tico de urgencia. Ante la presencia de falla hep&aacute;tica aguda se deben tomar tres conductas en simult&aacute;neo: internaci&oacute;n, contacto con el Centro de Trasplante Hep&aacute;tico y solicitud de estudios para valoraci&oacute;n etiol&oacute;gica (serolog&iacute;a viral, panel de anticuerpos, estudios imagenol&oacute;gicos, y eventualmente biopsia hep&aacute;tica) ya que existen tratamientos espec&iacute;ficos para determinadas etiolog&iacute;as. Las causas se clasifican en: 1. T&oacute;xicas: no existiendo noci&oacute;n de esta causa en nuestro paciente; 2. Virales: por VHA, VHB, VHC, VHE, CMV, EBV; 3. Inmunol&oacute;gicas: hepatitis autoinmune y s&iacute;ndromes de superposici&oacute;n; 4. Metab&oacute;licas: Enfermedad de Wilson; 5. Vasculares: Sindrome de Budd-Chiari, hepatitis isqu&eacute;mica; 6. Relacionadas al embarazo: h&iacute;gado graso agudo del embarazado, s&iacute;ndrome HELLP </span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">(<a href="#tabla_2">Tabla II</a><span class="GramE">)<sup>(</sup></span><sup><a href="#2">2</a>-<a href="#27">27</a>)</sup><a name="24."></a><a name="25."></a><a name="26."></a><a name="27."></a>.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;">No sorprende que a pesar de la presencia confirmada por PCR de VHE, la serolog&iacute;a para el mismo fuese negativa. Esto se debe a la baja sensibilidad de las t&eacute;cnicas de ELISA para VHE, mas a&uacute;n en nuestro medio donde el Gen 3 es el predominante y las mismas est&aacute;n dise&ntilde;adas principalmente con ant&iacute;genos del Gen 1(<a href="#1">1</a>). La determinaci&oacute;n de ARN viral mediante PCR es una t&eacute;cnica con una elevada especificidad y sensibilidad pero por un periodo corto de tiempo (durante la viremia), coincidente con la fase sintom&aacute;tica. Por dicha raz&oacute;n es fundamental su solicitud precoz tanto en sangre como en materia fecal, siendo algo m&aacute;s prolongada la excreci&oacute;n del VHE por esta &uacute;ltima v&iacute;a(<a href="#1">1</a>). </span> <o:p></o:p></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;">La biopsia hep&aacute;tica no es necesaria para el diagn&oacute;stico de infecci&oacute;n por VHE. En este caso la indicaci&oacute;n estuvo sustentada en la duda diagn&oacute;stica respecto a la concomitancia de una Enfermedad de Wilson. La histolog&iacute;a descarto dep&oacute;sitos de cobre lo que alejo dicho diagn&oacute;stico y evidenci&oacute;<span style="font-size: 10pt; line-height: 120%; font-family: Verdana;"> hallazgos hist&oacute;logos t&iacute;picos de una hepatitis por VHE. La presencia de fibrosis lleva al planteo de la coexistencia de una hepatopat&iacute;a de base de etiolog&iacute;a no aclarada sobre la cual el virus haya determinado una noxa adicional con la consiguiente falla hep&aacute;tica. </span> </span> <o:p></o:p></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;">Respecto al tratamiento de la infecci&oacute;n por VHE, en caso de hepatitis aguda es exclusivamente sintom&aacute;tico, ante el desarrollo de falla hep&aacute;tica aguda, si bien existen reportes de casos en los que se realiz&oacute;<span style="font-size: 10pt; line-height: 120%; font-family: Verdana;"> tratamiento antiviral, no existe evidencia para recomendar su uso, siendo el trasplante hep&aacute;tico el &uacute;nico tratamiento aceptado(<a href="#1">1</a>,<a href="#13">13</a>,<a href="#28">28</a>)<a name="28."></a>. En caso de hepatitis cr&oacute;nica por VHE en pacientes bajo tratamiento inmunosupresor se recomienda la reducci&oacute;n del mismo, si esto no es posible o de no lograr erradicar la infecci&oacute;n a pesar de ello, estar&iacute;a indicado el tratamiento antiviral con interfer&oacute;n pegilado o ribavirina dependiendo del escenario cl&iacute;nico(<a href="#1">1</a>,<a href="#29">29</a>-<a href="#39">39</a>)<a name="29."></a><a name="30."></a><a name="31."></a><a name="32."></a><a name="33."></a><a name="34."></a><a name="35."></a><a name="36."></a><a name="37."></a><a name="38."></a><a name="39."></a>. Respecto a la profilaxis existe actualmente una vacuna para Gen 1, aprobada por el momento solo en China y disponible para su comercializaci&oacute;n(<a href="#1">1</a>,<a href="#18">18</a>,<a href="#38">38</a>).</span></span><o:p></o:p></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>    <font face="Verdana" size="2">   <a name="tabla_2"></a><img style="width: 505px; height: 679px;" alt="" src="/img/revistas/ami/v36n3/3a03t2.jpg"> </font>     ]]></body>
<body><![CDATA[<p></p>        <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><span style="font-weight: bold;">Comentarios finales</span></span></p>           <p>Se detect&oacute;<span style="font-size: 10pt; line-height: 120%; font-family: Verdana;"> el primer caso de falla hep&aacute;tica aguda asociado a la infecci&oacute;n por VHE en nuestro pa&iacute;s. Se destaca, en caso de hepatitis aguda de etiolog&iacute;a indeterminada, as&iacute; como cr&oacute;nica en inmunodeprimidos, la conveniencia de solicitar determinaci&oacute;n del ARN viral por PCR en sangre y materia fecal en forma precoz adem&aacute;s de la serolog&iacute;a debido a su relativamente baja sensibilidad.</span><o:p></o:p></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><o:p>&nbsp;</o:p></span></p>           <p><span style="font-weight: bold;" class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB">Bibliograf&iacute;a</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><o:p>&nbsp;</o:p></span></p>           <!-- ref --><p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="1"></a><a href="#1.">1</a>. Mirazo</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"> S, Ramos N, <span class="SpellE">Mainardi</span> V, Gerona S, <span class="SpellE">Arbiza</span> J. Transmission, diagnosis, and management of hepatitis E: an update. <span class="SpellE">Hepat</span> Med. 2014<span class="GramE">;6:45</span>-59<o:p></o:p></span><p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="2"></a><a href="#2.">2</a>. Kumar S, <span class="SpellE">Subhadra</span> S, Singh <span class="SpellE">B,Panda</span> BK. Hepatitis E virus: the current scenario. <span class="SpellE">Int</span> J Infect Dis. 2013<span class="GramE">;17</span> (4): 228&ndash;233.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="3"></a><a href="#3.">3</a>. Rein DB, Stevens GA, <span class="SpellE">Theaker</span> J, <span class="SpellE">Wittenborn</span> JS, <span class="SpellE">Wiersma</span> ST. <span class="GramE">The global burden of hepatitis E virus genotypes 1 and 2 in 2005.</span> <span class="SpellE"><span class="GramE">Hepatology</span></span><span class="GramE">.</span> 2012; 55 (4): 988&ndash;997.<o:p></o:p></span></p>           ]]></body>
<body><![CDATA[<p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="4"></a><a href="#4.">4</a>. Taniguchi M, Kim SR, <span class="SpellE">Mishiro</span> S, Takahashi K, Shin MH, <span class="SpellE">Yun</span> H et al. Epidemiology of hepatitis E in <span class="SpellE">Northeastern</span> China, South Korea and Japan. J Infect. 2009; 58 (3): 232&ndash;237.<o:p></o:p></span></p>           <p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="5"></a><a href="#5.">5</a>. Patra</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"> S, Kumar A, <span class="SpellE">Trivedi</span> SS, <span class="SpellE">Puri</span> M, <span class="SpellE">Sarin</span> SK. Maternal and <span class="SpellE">fetal</span> outcomes in pregnant women with acute hepatitis E virus infection. Ann Intern Med. 2007; 147 (1): 28&ndash;33.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="6"></a><a href="#6.">6</a>. Schlosser B, Stein A, <span class="SpellE">Neuhaus</span> R, <span class="SpellE">Pahl</span> S, <span class="SpellE">Ramez</span> B, Kruger DH, et al. Liver transplant from a donor with occult HEV infection induced chronic hepatitis and cirrhosis in the recipient. <span class="GramE">J <span class="SpellE">Hepatol</span>.</span> 2012; 56 (2): 500&ndash;502.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="7"></a><a href="#7.">7</a>. Le <span class="SpellE">Coutre</span> P, <span class="SpellE">Meisel</span> H, Hofmann J, <span class="SpellE">R&ouml;cken</span> C, <span class="SpellE">Vuong</span> GL, <span class="SpellE">Neuburger</span> S, et al. Reactivation of hepatitis E infection in a patient with acute <span class="SpellE">lymphoblastic</span> leukaemia after <span class="SpellE">allogeneic</span> stem cell transplantation. <span class="GramE">Gut.</span> 2009; 58 (5): 699&ndash;702.<o:p></o:p></span></p>           <p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="8"></a><a href="#8.">8</a>. Koenecke</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"> C, <span class="SpellE">Pischke</span> S, Heim A,<span style="">&nbsp; </span><span class="SpellE">Raggub</span> L, Bremer B, <span class="SpellE">Raupach</span> R, et al. Chronic hepatitis E in <span class="SpellE">hematopoietic</span> stem cell transplant patients in a low-endemic country? <span class="SpellE">Transpl</span> Infect Dis. 2012; 14 (1): 103&ndash;106.<o:p></o:p></span></p>           <p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="9"></a><a href="#9.">9</a>. G&eacute;rolami</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"> R, <span class="SpellE">Moal</span> V, Colson P. Chronic hepatitis E with cirrhosis in a kidney-transplant recipient. N <span class="SpellE">Engl</span> J Med. 2008; 358 (8): 859&ndash;860.<o:p></o:p></span></p>           <p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="10"></a><a href="#10.">10</a>. Kamar</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"> N, Selves J, <span class="SpellE">Mansuy</span> JM, <span class="SpellE">Ouezzani</span> L, <span class="SpellE">P&eacute;ron</span> JM, <span class="SpellE">Guitard</span> J, et al. Hepatitis E virus and chronic hepatitis in organ-transplant recipients. N <span class="SpellE">Engl</span> J Med. 2008; 358 (8): 811&ndash;817.<o:p></o:p></span></p>           <p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="11"></a><a href="#11.">11</a>. Pischke</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"> S, <span class="SpellE">Suneetha</span> PV, <span class="SpellE">Baechlein</span> C, <span class="SpellE">Barg</span>-Hock H, Heim A, <span class="SpellE">Kamar</span> N, et al. Hepatitis E virus infection as a cause of graft hepatitis in liver transplant recipients. </span><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD">Liver</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"> <span class="SpellE">Transpl</span>. 2010; 16 (1): 74&ndash;82.<o:p></o:p></span></p>           <p><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="ES-TRAD"><a name="12"></a><a href="#12.">12</a>. Gonz&aacute;lez Tall&oacute;n AI, Moreira Vicente V, Mateos <span class="SpellE">Lindemann</span> ML, <span class="SpellE">Ch&eacute;car</span> Justo LM. </span><span class="GramE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB">Chronic hepatitis E in an <span class="SpellE">immunocompetent</span> patient.</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"> <span class="SpellE">Gastroenterol</span> <span class="SpellE">Hepatol</span>. 2011; 34 (6): 398&ndash;400.<o:p></o:p></span></p>           <!-- ref --><p><span class="SpellE"><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"><a name="13"></a><a href="#13.">13</a>. Grewal</span></span><span style="font-size: 10pt; line-height: 120%; font-family: Verdana;" lang="EN-GB"> P1, <span class="SpellE">Kamili</span> S, <span class="SpellE">Motamed</span> D. 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