<?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>2007-4085</journal-id>
<journal-title><![CDATA[Revista mexicana de urología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. urol.]]></abbrev-journal-title>
<issn>2007-4085</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Urología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-40852017000300207</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Azoospermia en varón infértil con polimorfismo heterocromático 46,XY,9qh+]]></article-title>
<article-title xml:lang="en"><![CDATA[Azoospermia in an infertile male with heterochromatic polymorphism 46,XY,9qh+]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Regalado]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gallo-Ochoa]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-Martínez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Monterrosas-Minnuti]]></surname>
<given-names><![CDATA[CA.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Almanzor-González]]></surname>
<given-names><![CDATA[OE.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Camarena-Romero]]></surname>
<given-names><![CDATA[SA.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Guadalajara  ]]></institution>
<addr-line><![CDATA[Guadalajara Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>77</volume>
<numero>3</numero>
<fpage>207</fpage>
<lpage>212</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40852017000300207&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40852017000300207&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40852017000300207&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  ANTECEDENTES:  la infertilidad es la incapacidad para conseguir el embarazo en la pareja sexualmente activa, sin anticoncepción, en el lapso de un año. Las alteraciones numéricas, como trisomías, o estructurales, como inversiones o translocaciones tienen una presentación poco común. En la población general pueden ocurrir alrededor de 0.4% de alteraciones cromosómicas, numéricas o estructurales. En pacientes con concentración menor de 10 millones de espermatozoides esta frecuencia aumenta, incluso, a 10 veces (4%) por lo que deberá tomarse en cuenta en el tratamiento de pacientes infértiles con oligozoospermia severa y azoospermia. Los polimorfismos no tienen repercusión en el fenotipo; sin embargo, se han asociado con pobre espermatogénesis e infertilidad masculina. La mayor parte se manifiestan como oligozoospermia severa y escasos como azoospermia.  CASO CLÍNICO:  se comunica un polimorfismo heterocromático 46 XY 9qh+ en un paciente masculino de 38 años de edad, con azoospermia como causa de infertilidad primaria, confirmada mediante cariotipo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  BACKGROUND:  Infertility is the incapacity over one year to achieve pregnancy in the sexually active couple not using contraception. Numerical or trisomy alterations, or structural anomalies, such as inversions or translocations, are rare. Chromosomal alterations, either numerical or structural, occur in about 0.4% of the general population. There is a 10-fold increase (4%) in the frequency of chromosomal alterations in patients with concentrations under 10 million spermatozoa, which should be considered in the management approach to infertile patients with severe oligospermia or azoospermia. Polymorphisms do not impact the phenotype, but they have been associated with poor spermatogenesis and male infertility. The majority of patients with the 46,XY,9qh+ karyotype present with severe oligospermia and very few with azoospermia.  CLINICAL CASE:  A 38-year-old man with the heterochromatic polymorphism variant 46,XY,9qh+ presented with azoospermia as the primary cause of infertility, confirmed through karyotype analysis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[polimorfismo]]></kwd>
<kwd lng="es"><![CDATA[azoospermia]]></kwd>
<kwd lng="es"><![CDATA[infertilidad]]></kwd>
<kwd lng="en"><![CDATA[Polymorphism]]></kwd>
<kwd lng="en"><![CDATA[Azoospermia]]></kwd>
<kwd lng="en"><![CDATA[Infertility]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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