<?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>0535-5133</journal-id>
<journal-title><![CDATA[Investigación Clínica]]></journal-title>
<abbrev-journal-title><![CDATA[Invest. clín]]></abbrev-journal-title>
<issn>0535-5133</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Investigaciones Clínicas "Dr. Américo Negrette", Facultad de Medicina, Universidad del Zulia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0535-51332021000100005</article-id>
<article-id pub-id-type="doi">10.22209/ic.v62n1a01</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Función tiroidea en escolares con obesidad.]]></article-title>
<article-title xml:lang="en"><![CDATA[Thyroid function in obese schoolchildren.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Angulo]]></surname>
<given-names><![CDATA[Nerkis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barbella de Szarvas]]></surname>
<given-names><![CDATA[Sobeida]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[Dora]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Ana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escobar]]></surname>
<given-names><![CDATA[Anairis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Carabobo Escuela de Ciencias Biomédicas y Tecnológicas Departamento de Ciencias Morfológicas y Forenses]]></institution>
<addr-line><![CDATA[Valencia ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Carabobo Unidad de Investigación en Gastroenterología y Nutrición Pediátrica ]]></institution>
<addr-line><![CDATA[Valencia ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Departamento Clínico Integral del Sur  ]]></institution>
<addr-line><![CDATA[Valencia ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Carabobo Escuela de Bioanálisis Departamento de Investigación y Desarrollo Social]]></institution>
<addr-line><![CDATA[Valencia ]]></addr-line>
<country>Venezuela</country>
</aff>
<pub-date pub-type="pub">
<day>31</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>31</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>62</volume>
<numero>1</numero>
<fpage>5</fpage>
<lpage>15</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://ve.scielo.org/scielo.php?script=sci_arttext&amp;pid=S0535-51332021000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://ve.scielo.org/scielo.php?script=sci_abstract&amp;pid=S0535-51332021000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://ve.scielo.org/scielo.php?script=sci_pdf&amp;pid=S0535-51332021000100005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La obesidad se acompaña con frecuencia de trastornos metabólicos, como la resistencia a la insulina, dislipidemias, hipertensión arterial, diabetes mellitus tipo 2 y modificaciones en los niveles plasmáticos de determinadas hormonas. Entre las alteraciones hormonales, la disfunción tiroidea es la más común. El hipotiroidismo puede favorecer la obesidad, pero múltiples teorías apuntan a que es la obesidad, la que genera disfunción tiroidea. El objetivo de la investigación, fue determinar los niveles de hormonas tiroideas en escolares con obesidad y analizar su relación con las variables antropométricas, niveles séricos de insulina y el índice HOMA1-IR. Este fue un estudio observacional, analítico y prospectivo, con un diseño transversal de serie de casos, realizado en 90 niños entre 7 y 12 años de edad, en el servicio de Gastroenterología y Nutrición Pediátrica de la Ciudad Hospitalaria &#8220;Dr. Enrique Tejera&#8221;, de Valencia, Venezuela. Se analizaron los valores de TSH, T3 y T4 libre, y se correlacionaron con sexo, condición socioeconómica, maduración sexual, índice de masa corporal, área grasa del brazo, circunferencia de cintura, insulina basal e índice HOMA1-IR. El 25,44% resultó hipotiroideo y el resto eutiroideo. En los escolares con obesidad y T4 libre baja hubo una correlación significativa (p&lt;0,05) con hiperinsulinismo y presentaron promedios significativamente mayores (p&lt;0,05) de HOMA1-IR. En conclusión, se encontró una frecuencia elevada de hipotiroidismo en escolares con obesidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Obesity is often accompanied by metabolic disorders, such as insulin resistance, dyslipidemias, high blood pressure, type 2 diabetes mellitus and modifications in plasma levels of certain hormones. Among the hormonal disorders, thyroid dysfunction is the most common. Hypothyroidism can promote obesity, but multiple theories suggest that it is obesity, which causes thyroid dysfunction. The objective of the research was to determine thyroid hormone levels in obese schoolchildren and analyze their relationship to anthropometric variables, serum insulin levels and the HOMA1-IR index. This was an observational, analytical, prospective study with a cross-sectional design of case series, conducted in 90 children between 7 and 12 years of age, at the Gastroenterology and Pediatric Nutrition Services of the Hospital City &#8220;Dr. Enrique Tejera&#8221;, Valencia, Venezuela. TSH, T3 and T4 free values were analyzed and correlated with sex, sexual maturation, body mass index, arm fat area, waist circumference, basal insulin and HOMA1-IR index. Of the subject studied, 25.44% were hypothyroid and the rest euthyroid. In schoolchildren with obesity and low free T4, there was a significant correlation (p&lt;0.05) with hyperinsulinism and they had significantly higher averages (p&lt;0.05) of HOMA1-IR. In conclusion, a high frequency of hypothyroidism was found in obese schoolchildren.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[obesidad en escolares]]></kwd>
<kwd lng="es"><![CDATA[tiroides]]></kwd>
<kwd lng="es"><![CDATA[antropometría]]></kwd>
<kwd lng="es"><![CDATA[insulina]]></kwd>
<kwd lng="en"><![CDATA[obesity in schoolchildren]]></kwd>
<kwd lng="en"><![CDATA[thyroid]]></kwd>
<kwd lng="en"><![CDATA[anthropometry]]></kwd>
<kwd lng="en"><![CDATA[insulin]]></kwd>
</kwd-group>
</article-meta>
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