<?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>0212-1611</journal-id>
<journal-title><![CDATA[Nutrición Hospitalaria]]></journal-title>
<abbrev-journal-title><![CDATA[Nutr. Hosp.]]></abbrev-journal-title>
<issn>0212-1611</issn>
<publisher>
<publisher-name><![CDATA[Grupo Arán]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0212-16112017000300568</article-id>
<article-id pub-id-type="doi">10.20960/nh.559</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Associations between insulin resistance and three B-vitamins in European adolescents: the HELENA study]]></article-title>
<article-title xml:lang="es"><![CDATA[Asociaciones entre la resistencia a la insulina y tres vitaminas del grupo B en adolescentes europeos: el estudio HELENA]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Iglesia]]></surname>
<given-names><![CDATA[Iris]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Gross]]></surname>
<given-names><![CDATA[Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huybrechts]]></surname>
<given-names><![CDATA[Inge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de-Miguel-Etayo]]></surname>
<given-names><![CDATA[Pilar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Molnar]]></surname>
<given-names><![CDATA[Denes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manios]]></surname>
<given-names><![CDATA[Yannis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Widhalm]]></surname>
<given-names><![CDATA[Kurt]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gottrand]]></surname>
<given-names><![CDATA[Frédéric]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kafatos]]></surname>
<given-names><![CDATA[Anthony]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marcos]]></surname>
<given-names><![CDATA[Ascensión]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de la O. Puerta]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leclerc]]></surname>
<given-names><![CDATA[Catherine]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[De Henauw]]></surname>
<given-names><![CDATA[Stefaan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Stehle]]></surname>
<given-names><![CDATA[Peter]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kersting]]></surname>
<given-names><![CDATA[Mathilde]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Zaragoza Instituto de Investigación Sanitaria Aragón (IIS Aragón) Instituto Agroalimentario de Aragón (IA2). GENUD (Growth, Exercise, Nutrition and Development) Research Group]]></institution>
<addr-line><![CDATA[Zaragoza ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitario Cruces Red de Salud Materno-infantil y del Desarrollo (SAMID) ]]></institution>
<addr-line><![CDATA[Barakaldo Bizkaia]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Politécnica de Madrid Department of Health and Human Performance ImFINE Research Group]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBERObn)  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Ghent University Department of Public Health ]]></institution>
<addr-line><![CDATA[Ghent ]]></addr-line>
<country>Belgium</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,International Agency for Research on Cancer (IARC)  ]]></institution>
<addr-line><![CDATA[Lyon ]]></addr-line>
<country>France</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,University of Pécs Department of Pediatrics ]]></institution>
<addr-line><![CDATA[Pécs ]]></addr-line>
<country>Hungary</country>
</aff>
<aff id="Af8">
<institution><![CDATA[,Harokopio University Department of Nutrition and Dietetics ]]></institution>
<addr-line><![CDATA[Athens ]]></addr-line>
<country>Greece</country>
</aff>
<aff id="Af9">
<institution><![CDATA[,Medical University of Vienna Department of Pediatrics Division of Clinical Nutrition and Prevention]]></institution>
<addr-line><![CDATA[Vienna ]]></addr-line>
<country>Austria</country>
</aff>
<aff id="A10">
<institution><![CDATA[,Univiversity Lille 2  ]]></institution>
<addr-line><![CDATA[Lille ]]></addr-line>
<country>France</country>
</aff>
<aff id="A11">
<institution><![CDATA[,University of Crete School of Medicine ]]></institution>
<addr-line><![CDATA[Crete ]]></addr-line>
<country>Greece</country>
</aff>
<aff id="A12">
<institution><![CDATA[,Spanish National Research Council (CSIC) Institute of Food Science, Technology and Nutrition (ICTAN) Department of Metabolism and Nutrition. Immunonutrition Research Group]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A13">
<institution><![CDATA[,University of Granada School of Medicine Department of Physiology]]></institution>
<addr-line><![CDATA[Granada ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A14">
<institution><![CDATA[,Research Center for Food and Nutrition CREA (Council for Agricultural Research and Economics) ]]></institution>
<addr-line><![CDATA[Rome ]]></addr-line>
<country>Italy</country>
</aff>
<aff id="A15">
<institution><![CDATA[,University of Bonn Department of Nutrition and Food Science ]]></institution>
<addr-line><![CDATA[Bonn ]]></addr-line>
<country>Germany</country>
</aff>
<aff id="A16">
<institution><![CDATA[,Ruhr-University Bochum Pediatric University Clinic Research Institute of Child Nutrition]]></institution>
<addr-line><![CDATA[Bochum ]]></addr-line>
<country>Germany</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>34</volume>
<numero>3</numero>
<fpage>568</fpage>
<lpage>577</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0212-16112017000300568&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0212-16112017000300568&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0212-16112017000300568&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective:  To assess whether adolescents with high body mass index (BMI), or fat mass index (FMI), in combination with insulin resistance (assessed with the Homeostatic Model Assessment [HOMA] index), had also lower blood vitamin B6, folate and vitamin B12 concentrations.  Methods and materials:  Six hundred and fifteen adolescents from the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) study, with data on B-vitamins (both intakes and status), and BMI, FMI, HOMA, were selected. Intakes were assessed by two non-consecutive 24-h recalls. B-vitamins biomarkers were measured by chromatography and immunoassay. Analysis of covariance was applied to elucidate the differences in B-vitamins between combinations of groups defined according to the median of the z-scores of markers of body composition and insulin sensitivity.  Results:  When considering energy intakes and education of the mother in the model, in females, vitamin B6 intakes were higher in the high BMI/high HOMA group than in the high BMI-low HOMA group. Similarly, vitamin B6 intakes were higher in the high FMI/high HOMA group than in the low FMI/low HOMA group. Plasma vitamin B12 was significantly lower in males in the high FMI/high HOMA group than in the low FMI/low HOMA group, keeping also significant their trends throughout the groups, a fact that can be observed also for females (p &lt; 0.05).  Conclusion:  Adolescents with combined higher adiposity and higher HOMA insulin sensitivity showed lower vitamin B12 plasma concentrations. These differences do not seem to be explained by dietary vitamin B12 intake.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo:  evaluar si los adolescentes con mayor índice de masa corporal (IMC), o de masa grasa (IMG), en combinación con la resistencia a la insulina (medida con el Modelo de Valoración Homeostática [índice HOMA]), ingieren y tienen valores más bajos de vitamina B6, folato y vitamina B12.  Métodos y materiales:  seiscientos quince adolescentes participantes en el estudio Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA), con valores de ingesta y concentraciones de las vitaminas B6, folato y B12, e IMC, IMG y HOMA, fueron seleccionados. Las ingestas se midieron mediante dos recuerdos de 24 horas no consecutivos. Los biomarcadores de las vitaminas fueron obtenidos mediante cromatografía e inmunoensayo. Se aplicó el análisis de la covarianza para evaluar las diferencias entre las vitaminas (ingesta y concentraciones) entre las combinaciones de los grupos definidos según las medianas de los valores z de los marcadores de la composición corporal y de la sensibilidad a la insulina.  Resultados:  considerando la ingesta energética y la educación de la madre en el modelo en chicas, las ingestas de vitamin B6 fueron mayores en el grupo de mayor IMC/mayor HOMA que en el grupo mayor IMC/menor HOMA. Del mismo modo, el grupo constituido por mayor IMG/mayor HOMA presentó mayores ingestas de esta vitamina que el grupo formado por la combinación entre menor IMG/menor HOMA. La vitamina B12 plasmática en chicos fue significativamente menor en el grupo formado por mayor IMG/mayor HOMA que en el grupo menor IMG/menor HOMA, manteniendo también la tendencia significativa en los grupos, lo que también se puede observar en las chicas (p &lt; 0.05).  Conclusiones:  los adolescentes con mayor adiposidad en combinación con una mayor sensibilidad a la insulina mostraron menores valores de vitamina B12 plasmática. Estas diferencias no parecen estar explicadas por diferencias en la ingesta de vitamina B12.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Vitamin B6]]></kwd>
<kwd lng="en"><![CDATA[Folic acid]]></kwd>
<kwd lng="en"><![CDATA[Vitamin B12]]></kwd>
<kwd lng="en"><![CDATA[Adolescent]]></kwd>
<kwd lng="en"><![CDATA[Body mass index]]></kwd>
<kwd lng="en"><![CDATA[Insulin resistance]]></kwd>
<kwd lng="es"><![CDATA[Vitaminas B6]]></kwd>
<kwd lng="es"><![CDATA[Ácido fólico]]></kwd>
<kwd lng="es"><![CDATA[Vitamina B12]]></kwd>
<kwd lng="es"><![CDATA[Adolescentes]]></kwd>
<kwd lng="es"><![CDATA[Índice de masa corporal]]></kwd>
<kwd lng="es"><![CDATA[Resistencia a la insulina]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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