<?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>2448-6760</journal-id>
<journal-title><![CDATA[Veterinaria México OA]]></journal-title>
<abbrev-journal-title><![CDATA[Veterinaria México OA]]></abbrev-journal-title>
<issn>2448-6760</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Medicina Veterinaria y Zootecnia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-67602017000100001</article-id>
<article-id pub-id-type="doi">10.21753/vmoa.4.1.416</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de la presencia de receptores celulares al virus de Influenza Aviar en oviductos de aves sujetas a muda forzada usando inmunofluorescencia]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of the presence of avian influenza receptors in oviducts of forced moulting birds using immunofluorescence]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo-Villanueva]]></surname>
<given-names><![CDATA[Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Godoy]]></surname>
<given-names><![CDATA[Félix]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escorcia]]></surname>
<given-names><![CDATA[Magdalena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina Laboratorio de Virología]]></institution>
<addr-line><![CDATA[Cd. de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Medicina Veterinaria y Zootecnia Departamento de Medicina y Zootecnia de Aves]]></institution>
<addr-line><![CDATA[Cd. de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<volume>4</volume>
<numero>1</numero>
<fpage>1</fpage>
<lpage>9</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-67602017000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-67602017000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-67602017000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Durante el 2012, un brote de Influenza Aviar de Alta Patogenicidad ocasionado por el subtipo H7N3, en México, infectó y ocasionó la muerte o el sacrificio de alrededor de 22 millones de aves ponedoras. Durante este periodo, el principal desafío de los avicultores fue asegurar el flujo de comercialización del huevo. Además de los protocolos sanitarios y de vacunación, se implementaron manejos de muda forzada en la zona afectada. Este manejo aseguró el mantenimiento de la producción de huevo en zonas cuarentenadas, pues disminuyó la mortalidad de las parvadas infectadas y reestimuló el retorno a la producción normal de huevo. Para entender cómo la muda forzada redujo la mortalidad de las aves infectadas, examinamos la distribución del receptor del virus de Influenza Aviar en el oviducto de gallinas sujetas a muda forzada. Evaluamos si los cambios en el tracto reproductivo causado por la muda forzada disminuyen la expresión del receptor específico en la membrana celular. La presencia de receptores específicos determina la susceptibilidad del hospedador al virus de Influenza. Utilizamos la técnica de inmunofluorescencia con la lectina Maackia amurensis para identificar la presencia del receptor viral en cortes histológicos de oviductos de aves en producción y en oviductos de aves con muda forzada. Los resultados mostraron la presencia y distribución de los receptores a Influenza Aviar. Observamos una fuerte señal de los receptores en los cortes histológicos de los oviductos de aves en producción. Por el contrario, la señal fue baja en los oviductos de aves sometidas a muda. Estos resultados demuestran una disminución en el número de receptores de aves sometidas a muda forzada. La falta de receptores afecta la infección y la replicación del virus, así como los daños inducidos por el virus en el oviducto, lo que podría ayudar a explicar la observación en el campo de que las aves infectadas con Influenza Aviar y sometidas a muda forzada sobreviven más que las aves a las que no se les somete a muda.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract During the 2012 highly pathogenic avian influenza outbreak in Mexico caused by the H7N3 subtype, infection led to the death of approximately 22 million laying hens. Thus, poultry farmers were faced with a challenge to ensure the continued commercial flow of eggs. In addition to implementing established sanitary protocols and vaccination programs, forced moulting management was utilized in the affected areas. This strategy guaranteed the maintenance of egg production in the quarantined areas by decreasing the mortality of the infected flock while re-stimulating egg production. To understand how forced moulting reduced mortality of the infected birds, we examined the distribution of the avian influenza receptor in the oviduct of hens subjected to forced moulting. We tested if changes in the reproductive tract caused by forced moulting generated a decrease in the expression of the specific virus receptor in the cell membranes. Host susceptibility to the influenza virus was determined by the presence of these specific receptors. We utilized immunofluorescence of the Maackia amurensis lectin to identify the presence of the virus receptor in histological sections of the oviducts of birds in egg production and birds undergoing forced moulting. The results showed the presence and distribution of the receptors for avian influenza. A strong signal of the receptor was observed in the histological sections of the oviducts of birds in egg production. Conversely, the signal was low in the oviducts of birds undergoing forced moulting. These results demonstrate a decrease in the number of receptors of birds subjected to forced moulting. A lack of receptors would affect virus infection and replication as well as virus-induced damage in the oviduct, which may help explain the observation in the field that birds infected with avian influenza and subjected to forced moulting have decreased mortality.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[influenza aviar]]></kwd>
<kwd lng="es"><![CDATA[inmunofluorescencia]]></kwd>
<kwd lng="es"><![CDATA[muda forzada]]></kwd>
<kwd lng="es"><![CDATA[oviducto]]></kwd>
<kwd lng="es"><![CDATA[pelecha]]></kwd>
<kwd lng="es"><![CDATA[producción de huevo]]></kwd>
<kwd lng="en"><![CDATA[avian influenza]]></kwd>
<kwd lng="en"><![CDATA[immunofluorescence]]></kwd>
<kwd lng="en"><![CDATA[forced moulting]]></kwd>
<kwd lng="en"><![CDATA[oviduct]]></kwd>
<kwd lng="en"><![CDATA[egg production]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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