<?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>0035-0052</journal-id>
<journal-title><![CDATA[Revista mexicana de pediatría]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. pediatr.]]></abbrev-journal-title>
<issn>0035-0052</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Pediatría A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-00522021000600256</article-id>
<article-id pub-id-type="doi">10.35366/105430</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Niveles de vitamina D en madres y sus hijos al momento del nacimiento]]></article-title>
<article-title xml:lang="en"><![CDATA[Vitamin D levels in mothers and their children at birth]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calva y Rodríguez]]></surname>
<given-names><![CDATA[Roberto Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lagunes-Yannelli]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calva-Ariza]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Domínguez]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coronel-Cruzado]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Caballero]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza-Hernández]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arenas-Muñoz]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Téllez]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espejel-Santamaría]]></surname>
<given-names><![CDATA[EC]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soto-Zitlatl]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Bolaños]]></surname>
<given-names><![CDATA[JR]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Poncet]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa-Roldán]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos-Romero]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ximeno-Reyes]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Rodríguez]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla (BUAP) Facultad de Medicina ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Puebla ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital MAC Puebla  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>88</volume>
<numero>6</numero>
<fpage>256</fpage>
<lpage>259</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-00522021000600256&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-00522021000600256&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-00522021000600256&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Objetivo:  Describir los niveles séricos de vitamina D (VD) de madres y sus hijos al momento del nacimiento.  Material y métodos:  Se incluyeron 60 madres y 62 recién nacidos (dos gemelares), que fueron seleccionados de una unidad médica en la ciudad de Puebla, en el periodo de abril a mayo de 2015. Previo consentimiento informado, se registraron datos de la madre y recién nacido (RN), incluyendo tiempo de exposición solar e ingesta de VD durante el embarazo. Se identificaron los niveles séricos de 25 hidroxivitamina D (25(OH)D), a fin de clasificarlos en suficiencia, insuficiencia y deficiencia.  Resultados:  Se encontró que 85% de las madres tenían niveles bajos de VD; 43.3% con insuficiencia y 41.7% con deficiencia. Estos porcentajes fueron muy similares en los RN, de los cuales sólo 6.5% mostró niveles normales. No se encontró relación de los niveles de VD con tiempo de exposición al sol o el consumo de VD durante el embarazo.  Conclusión:  La alta frecuencia de niveles bajos de VD alertan sobre la necesidad de otorgar suplementación a todos los RN, particularmente a los que reciben lactancia exclusiva.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Objective:  To describe the serum levels of vitamin D (VD) in mothers and their newborns.  Material and methods:  60 mothers and 62 newborns (two twins), who were selected from a medical unit in the city of Puebla, between April and May 2015, were included. After informed consent, data from the mother and newborn were recorded, including sun exposure time and VD intake during pregnancy. Serum levels of 25 hydroxyvitamin D (25(OH)D) were determined to classify each participant into sufficiency, insufficiency, and deficiency parameters.  Results:  It was found that 85% of the mothers had low levels of VD; 43.3% with insufficiency and 41.7% with deficiency. These percentages were very similar in newborns, since only 6.5% showed normal levels. No relationship was found between VD levels and time of sun exposure or VD consumption during pregnancy.  Conclusion:  The high frequency of low levels of VD warns about the need to provide supplementation to all newborns, particularly those who are exclusively breastfed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Vitamina D]]></kwd>
<kwd lng="es"><![CDATA[25 hidroxivitamina D]]></kwd>
<kwd lng="es"><![CDATA[deficiencia]]></kwd>
<kwd lng="es"><![CDATA[recién nacidos]]></kwd>
<kwd lng="es"><![CDATA[madres]]></kwd>
<kwd lng="en"><![CDATA[Vitamin D]]></kwd>
<kwd lng="en"><![CDATA[25 hydroxyvitamin D]]></kwd>
<kwd lng="en"><![CDATA[deficiency]]></kwd>
<kwd lng="en"><![CDATA[newborns]]></kwd>
<kwd lng="en"><![CDATA[mothers]]></kwd>
</kwd-group>
</article-meta>
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