<?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>S0212-16112016000100012</article-id>
<article-id pub-id-type="doi">10.20960/nh.18</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Asociación entre nutrientes y hemoglobina glicosilada en diabéticos tipo 2]]></article-title>
<article-title xml:lang="en"><![CDATA[Nutrients and its association with glycosilated hemoglobin in patients with diabetes type 2]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Durán Agüero]]></surname>
<given-names><![CDATA[Samuel]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández Godoy]]></surname>
<given-names><![CDATA[Eloina]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrasco Piña]]></surname>
<given-names><![CDATA[Elena]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad de San Sebastián Facultad de Ciencias de la Salud Nutrición y Dietética]]></institution>
<addr-line><![CDATA[San Sebastián ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Autónoma de chile Facultad de Ciencias de la Salud Nutrición y Dietética]]></institution>
<addr-line><![CDATA[Chile ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2016</year>
</pub-date>
<volume>33</volume>
<numero>1</numero>
<fpage>59</fpage>
<lpage>63</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0212-16112016000100012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0212-16112016000100012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0212-16112016000100012&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Introducción: la hiperglicemia es la característica principal de la diabetes (DM). La restricción de CHO en la dieta presenta el mayor efecto en la disminución de los niveles de glucosa en sangre tanto en DM 1 y 2. Objetivo: asociar la ingesta de macro y micronutrientes con el control metabólico de pacientes con diabetes tipo 2. Material y métodos: se entrevistó a 714 pacientes diabéticos tipo 2 de ambos sexos, entre 27 y 90 años, en centros de salud familiar de Santiago de Chile. Se les aplicó una encuesta alimentaria y una evaluación antropométrica. Se realizó prueba de regresión logística, se estimó además el valor del Odds Ratio (OR) y su correspondiente intervalo de confianza (IC). Resultados: el IMC promedio fue de 30,8 ± 5,7 kg/m², el 29,8% de los sujetos tenía una HbA1c compensada. Se puede observar que solo la ingesta elevada de carbohidratos (percentil 75) se asoció con un incremento en el riesgo de tener HbA1c elevada OR = 2,7 (IC 95% 1,5-4,8; p < 0,001). Conclusiones: la ingesta elevada de carbohidratos de rápida absorción, altos en sacarosa y bajos en fibra se asocia como factor de riesgo en el incremento de HbA1c. La ingesta total de energía y el patrón de alimentación saludable se debe priorizar sobre la distribución de macronutrientes. Es importante la asesoría de un experto en nutrición especializado en diabetes quien, en colaboración con el equipo médico, debe determinar el tratamiento para cumplir con los objetivos individuales del paciente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Introduction: Hyperglycemia is the main characteristic of diabetes (DM). CHO restriction in diet has the greatest effect decreasing blood glucose levels in both type 1 and 2 DM. Objective: To associate intake of macro and micronutrients and metabolic control in patients with type 2 diabetes. Methods: 714 type 2 diabetic men and women between 27 and 90 years were interviewed at family health centers of Santiago de Chile. We applied a food survey and an anthropometric assessment. Logistic regression test was performed. The value of the odds ratio (OR) and its confidence interval (CI) was also estimated. Results: The mean BMI was 30.8 ± 5.7 kg/m², 29.8% of the subjects had HbA1c compensated. Only the high intake of carbohydrates (75 percentile) was associated with an increased risk of elevated HbA1c OR = 2.7 (95% CI 1.5 to 4.8; p < 0.001). Conclusions: The high intake of rapidly absorbed carbohydrates, high in sucrose and low in fiber is associated as a risk factor to increase HbA1c. The total energy intake and healthy eating patterns should be prioritized in the distribution of macronutrients. It is important to seek advice from a nutrition expert specialized in diabetes who, together with the medical team, shall determine the best treatment to meet patients' individual goals.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Diabetes tipo 2]]></kwd>
<kwd lng="es"><![CDATA[Hiperglicemia]]></kwd>
<kwd lng="es"><![CDATA[Hemoglobina glicosilada]]></kwd>
<kwd lng="es"><![CDATA[Nutrientes]]></kwd>
<kwd lng="es"><![CDATA[Carbohidratos]]></kwd>
<kwd lng="en"><![CDATA[Type 2 diabetes]]></kwd>
<kwd lng="en"><![CDATA[Hyperglycemia]]></kwd>
<kwd lng="en"><![CDATA[Glycosylated hemoglobin]]></kwd>
<kwd lng="en"><![CDATA[Nutrients]]></kwd>
<kwd lng="en"><![CDATA[Carbohydrates]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  <a name="top"></a>    <p><font face="Verdana" size="2"><b>TRABAJO ORIGINAL / <i>Obesidad y s&iacute;ndrome metab&oacute;lico</i></b></font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="4"><b>Asociaci&oacute;n entre nutrientes y hemoglobina glicosilada en diab&eacute;ticos tipo 2</b></font></p>     <p><font face="Verdana" size="4"><b>Nutrients and its association with glycosilated hemoglobin in patients with diabetes type 2</b></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Samuel Dur&aacute;n Ag&uuml;ero<sup>1</sup>, Eloina Fern&aacute;ndez Godoy<sup>1</sup> y Elena Carrasco Pi&ntilde;a<sup>2</sup></b></font></p>     <p><font face="Verdana" size="2"><sup>1</sup>Carrera de Nutrici&oacute;n y Diet&eacute;tica. Facultad de Ciencias de la Salud. Universidad San Sebasti&aacute;n. Chile.    <br><sup>2</sup>Carrera de Nutrici&oacute;n y Diet&eacute;tica. Facultad de Ciencias de la Salud. Universidad Aut&oacute;noma de Chile. Chile</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2"><a href="#bajo">Direcci&oacute;n para correspondencia</a></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p> <hr size="1">     <p><font face="Verdana" size="2"><b>RESUMEN</b></font></p>     <p><font face="Verdana" size="2"><b>Introducci&oacute;n:</b> la hiperglicemia es la caracter&iacute;stica principal de la diabetes (DM). La restricci&oacute;n de CHO en la dieta presenta el mayor efecto en la disminuci&oacute;n de los niveles de glucosa en sangre tanto en DM 1 y 2.    <br><b>Objetivo:</b> asociar la ingesta de macro y micronutrientes con el control metab&oacute;lico de pacientes con diabetes tipo 2.    <br><b>Material y m&eacute;todos:</b> se entrevist&oacute; a 714 pacientes diab&eacute;ticos tipo 2 de ambos sexos, entre 27 y 90 a&ntilde;os, en centros de salud familiar de Santiago de Chile. Se les aplic&oacute; una encuesta alimentaria y una evaluaci&oacute;n antropom&eacute;trica. Se realiz&oacute; prueba de regresi&oacute;n log&iacute;stica, se estim&oacute; adem&aacute;s el valor del Odds Ratio (OR) y su correspondiente intervalo de confianza (IC).    <br><b>Resultados:</b> el IMC promedio fue de 30,8 &plusmn; 5,7 kg/m<sup>2</sup>, el 29,8% de los sujetos ten&iacute;a una HbA1c compensada. Se puede observar que solo la ingesta elevada de carbohidratos (percentil 75) se asoci&oacute; con un incremento en el riesgo de tener HbA1c elevada OR = 2,7 (IC 95% 1,5-4,8; p &lt; 0,001).    <br><b>Conclusiones:</b> la ingesta elevada de carbohidratos de r&aacute;pida absorci&oacute;n, altos en sacarosa y bajos en fibra se asocia como factor de riesgo en el incremento de HbA1c. La ingesta total de energ&iacute;a y el patr&oacute;n de alimentaci&oacute;n saludable se debe priorizar sobre la distribuci&oacute;n de macronutrientes. Es importante la asesor&iacute;a de un experto en nutrici&oacute;n especializado en diabetes quien, en colaboraci&oacute;n con el equipo m&eacute;dico, debe determinar el tratamiento para cumplir con los objetivos individuales del paciente.</font></p>     <p><font face="Verdana" size="2"><b>Palabras clave:</b> Diabetes tipo 2. Hiperglicemia. Hemoglobina glicosilada. Nutrientes. Carbohidratos.</font></p> <hr size="1">     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2"><b>ABSTRACT</b></font></p>     <p><font face="Verdana" size="2"><b>Introduction:</b> Hyperglycemia is the main characteristic of diabetes (DM). CHO restriction in diet has the greatest effect decreasing blood glucose levels in both type 1 and 2 DM.    <br><b>Objective:</b> To associate intake of macro and micronutrients and metabolic control in patients with type 2 diabetes.    <br><b>Methods:</b> 714 type 2 diabetic men and women between 27 and 90 years were interviewed at family health centers of Santiago de Chile. We applied a food survey and an anthropometric assessment. Logistic regression test was performed. The value of the odds ratio (OR) and its confidence interval (CI) was also estimated.    <br><b>Results:</b> The mean BMI was 30.8 &plusmn; 5.7 kg/m<sup>2</sup>, 29.8% of the subjects had HbA1c compensated. Only the high intake of carbohydrates (75 percentile) was associated with an increased risk of elevated HbA1c OR = 2.7 (95% CI 1.5 to 4.8; p &lt; 0.001).    <br><b>Conclusions:</b> The high intake of rapidly absorbed carbohydrates, high in sucrose and low in fiber is associated as a risk factor to increase HbA1c. The total energy intake and healthy eating patterns should be prioritized in the distribution of macronutrients. It is important to seek advice from a nutrition expert specialized in diabetes who, together with the medical team, shall determine the best treatment to meet patients' individual goals.</font></p>     <p><font face="Verdana" size="2"><b>Key words:</b> Type 2 diabetes. Hyperglycemia. Glycosylated hemoglobin. Nutrients. Carbohydrates.</font></p> <hr size="1">     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Introducci&oacute;n</b></font></p>     <p><font face="Verdana" size="2">La Organizaci&oacute;n Mundial de la Salud estima que aproximadamente 180 millones de personas en el mundo tienen diabetes tipo 2 (DM2) (1). Los costos financieros y sociales atribuibles a la DM2 y sus complicaciones son sustanciales. S&oacute;lo en los EE. UU. los costos totales estimados asociados a DM2 al a&ntilde;o 2012 fueron 132 mil millones de d&oacute;lares estadounidenses (2).</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">El plan de alimentaci&oacute;n para el diab&eacute;tico depende de la edad, sexo, estado nutricional, actividad f&iacute;sica, estado fisiol&oacute;gico y patol&oacute;gico (3,4). En relaci&oacute;n con la alimentaci&oacute;n, la ingesta controlada de hidratos de carbono (CHO), es fundamental en el control de la glicemia, pues determina hasta un 50% la variabilidad en la respuesta glic&eacute;mica (5).</font></p>     <p><font face="Verdana" size="2">Un meta an&aacute;lisis de 22 estudios de cohorte mostr&oacute; que el consumo de carbohidratos (CHO) fue asociado con un incremento en el riesgo de padecer DM2. Sin embargo, el consumo de grasas y prote&iacute;nas no ha mostrado ninguna asociaci&oacute;n (6,7). Otros estudios muestran que es la ingesta de CHO de alto &iacute;ndice glic&eacute;mico la que incrementa el riesgo de DM2 (8).</font></p>     <p><font face="Verdana" size="2">La hiperglicemia es la caracter&iacute;stica principal de la diabetes. La restricci&oacute;n de CHO en la dieta presenta el mayor efecto en la disminuci&oacute;n de los niveles de glucosa en sangre tanto en la DM 1 y 2. La hiperglicemia es la complicaci&oacute;n aguda m&aacute;s frecuente, causante de la glicaci&oacute;n avanzada de productos finales (AGE). El producto de glicaci&oacute;n m&aacute;s com&uacute;n es la hemoglobina A1c (HbA1c) que es ampliamente utilizada como control metab&oacute;lico y en algunos casos como diagn&oacute;stico (9). Es universalmente aceptado que la ingesta de CHO es la principal determinante de la glicemia (10) y que la restricci&oacute;n de CHO especialmente los de absorci&oacute;n r&aacute;pida, muestra una mayor reducci&oacute;n en los niveles de glucosa postprandial y HbA1c (11-13).</font></p>     <p><font face="Verdana" size="2">Algunos estudios han mostrado que la disminuci&oacute;n en un 1% de la HbA1c reduce en un 14% el riesgo de infarto al miocardio (14,15), adem&aacute;s de reducir los costos m&eacute;dicos (16).</font></p>     <p><font face="Verdana" size="2">El objetivo del presente estudio es asociar la ingesta de macro y micronutrientes con el control metab&oacute;lico de pacientes con diabetes tipo 2.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Material y m&eacute;todos</b></font></p>     <p><font face="Verdana" size="2">Es un estudio transversal que incluy&oacute; a 714 diab&eacute;ticos tipo 2 de ambos sexos entre 27 y 90 a&ntilde;os. Se entrevist&oacute; a cada sujeto en centros de salud familiar de Santiago de Chile. Se incluy&oacute; a todos los diab&eacute;ticos tipo 2 que se encontraban presentes al momento de realizar las evaluaciones. Adem&aacute;s, deb&iacute;an cumplir con la firma del consentimiento informado. Se exclu&iacute;an a los pacientes ausentes, a los que presentaban incapacidad para realizar la evaluaci&oacute;n antropom&eacute;trica o a los que ten&iacute;an menos de un a&ntilde;o desde el diagn&oacute;stico de la enfermedad. El estudio fue desarrollado siguiendo lo expuesto en la Declaraci&oacute;n de Helsinki respecto al trabajo con seres humanos.</font></p>     <p><font face="Verdana" size="2"><b>Encuesta alimentaria</b></font></p>     <p><font face="Verdana" size="2">A cada paciente se le aplic&oacute; una encuesta de Tendencia de Consumo de Alimentos con frecuencia semanal, la cual proporcion&oacute; informaci&oacute;n detallada sobre el consumo de alimentos de cada uno de los encuestados. Las porciones fueron descritas utilizando art&iacute;culos comunes de uso en el hogar (vaso, taza, cuchara, cucharadita, plato, etc.).</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2"><b>Antropometr&iacute;a</b></font></p>     <p><font face="Verdana" size="2">Se efectu&oacute; una evaluaci&oacute;n antropom&eacute;trica de peso y talla. La determinaci&oacute;n del peso se realiz&oacute; con un m&iacute;nimo de ropa, utilizando una balanza mec&aacute;nica (SECA, capacidad m&aacute;xima de 220 kg y precisi&oacute;n de 50 g). La estatura se midi&oacute; con un tall&iacute;metro con precisi&oacute;n de 1 mm. El estado nutricional fue determinado con el &iacute;ndice de masa corporal (IMC). Este &iacute;ndice se calcul&oacute; dividiendo el peso por la talla al cuadrado (IMC = peso (kg)/talla<sup>2</sup> (m)) y se clasific&oacute; de acuerdo a los puntos de corte recomendado por la OMS: &le; 18,5 bajo peso (BP); 18,5 a 24,9 normal; 25 a 29,9 sobrepeso (SP) y &ge; 30 obesidad (17).</font></p>     <p><font face="Verdana" size="2"><b>An&aacute;lisis estad&iacute;stico</b></font></p>     <p><font face="Verdana" size="2">Los datos primarios fueron sometidos a una prueba de regresi&oacute;n log&iacute;stica binaria con el objeto de determinar cu&aacute;les son las variables independientes estudiadas y qu&eacute; explica la variaci&oacute;n de las variables dependientes examinadas. La determinaci&oacute;n de estas variables se realiz&oacute; despu&eacute;s de sucesivos ajustes del modelo hasta encontrar el de mayor ajuste. Previamente se aplic&oacute; la prueba de Wald, con el objeto de determinar si los valores de los coeficientes de las variables estudiadas en la ecuaci&oacute;n son diferentes de cero. Se estim&oacute; adem&aacute;s el valor del Odds Ratio (OR) y su correspondiente intervalo de confianza (IC). El nivel de significaci&oacute;n empleado en todos los casos fue de &#945; &le; 0,05.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Resultados</b></font></p>     <p><font face="Verdana" size="2">Se evalu&oacute; a 714 personas diab&eacute;ticas (<a href="#t1">Tabla I</a>), el 58,5% mujeres. Las caracter&iacute;sticas generales del grupo se presentan en la <a href="#t1">tabla I</a>. El promedio de edad fue de 59,5 &plusmn; 11,7 a&ntilde;os y el IMC promedio fue de 30,8 &plusmn; 5,7 kg/m<sup>2</sup>. El 3,2% de los sujetos mostraba bajo peso, el 22,1% de los sujetos era normopeso, el 29,2% presentaba sobrepeso y un 45,3% obesidad. El 29,8% de los sujetos ten&iacute;a una HbA1c compensada.</font></p>     <p>&nbsp;</p>     <p align="center"><font face="Verdana" size="2"><a name="t1"><img src="/img/revistas/nh/v33n1/12_original11_tabla1.jpg"></a></font></p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">En la <a href="#t2">tabla II</a> se compara la ingesta de macro y micronutrientes seg&uacute;n sexo, sin encontrar diferencias significativas entre los grupos.</font></p>     <p>&nbsp;</p>     <p align="center"><font face="Verdana" size="2"><a name="t2"><img src="/img/revistas/nh/v33n1/12_original11_tabla2.jpg"></a></font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2">Para analizar los factores asociados a la HbA1c se realiz&oacute; un modelo de regresi&oacute;n log&iacute;stica, que se presenta en la <a href="#t3">tabla III</a>. Se ajust&oacute; por estado nutricional, sexo, consumo de tabaco, alcohol, edad, medicamentos e ingesta de hierro, zinc, calcio, magnesio, cobre, selenio y vitaminas A, B1, B2, B3, B6, B9 y B12. Se puede observar que s&oacute;lo la ingesta elevada de carbohidratos (percentil 75) se asoci&oacute; con un incremento en el riesgo de tener HbA1c elevada OR = 2,7 (IC 95% 1,5-4,8; p &lt; 0,001).</font></p>     <p>&nbsp;</p>     <p align="center"><font face="Verdana" size="2"><a name="t3"><img src="/img/revistas/nh/v33n1/12_original11_tabla3.jpg"></a></font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Discusi&oacute;n</b></font></p>     <p><font face="Verdana" size="2">El principal resultado del presente estudio es que la ingesta elevada de carbohidratos se asoci&oacute; a un incremento del riesgo de presentar una HbA1c elevada.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">Diversos autores indican que la ingesta de CHO es el factor de la dieta de mayor contribuci&oacute;n en el aumento de la glicemia y que una dieta baja o restringida en CHO reduce la glicemia pudiendo incluso normalizar el nivel de glucosa en sangre (11,18). Por otra parte, estudios bien dise&ntilde;ados han mostrado que una ingesta baja en CHO mejora el control glic&eacute;mico, hormonal y par&aacute;metros del perfil lip&iacute;dico, en pacientes que mantuvieron su peso corporal (13,19,20).</font></p>     <p><font face="Verdana" size="2">El reemplazo de CHO por l&iacute;pidos o, en algunos casos por prote&iacute;nas, es beneficioso en diabetes tipo 1 y 2, ya que ambos macronutrientes conducen a un mejor control de la glicemia y la p&eacute;rdida de peso, mejoran los marcadores de riesgo cardiovascular y reducen el uso de medicamentos, seg&uacute;n se ha establecido en experimentos bien controlados en personas con diabetes (21). En el caso de este estudio, la ingesta de prote&iacute;na, no se asoci&oacute; con una disminuci&oacute;n de la HbA1c.</font></p>     <p><font face="Verdana" size="2">Con respecto a las recomendaciones diet&eacute;ticas dadas por la American Diabetes Association (ADA), presenta evidencia a) la cantidad de CHO puede ser el factor m&aacute;s importante que influye en la respuesta glic&eacute;mica postprandial y se debe considerar al momento de elaborar el plan de alimentaci&oacute;n y evidencia b) el monitoreo o contabilizaci&oacute;n de los CHO sigue siendo una estrategia clave para alcanzar un buen control metab&oacute;lico de la glicemia y la ingesta de CHO a partir de vegetales, frutas, granos enteros, legumbres y l&aacute;cteos debe presentar una advertencia si contienen a&ntilde;adido grasas, az&uacute;car y sodio. (21). En Chile los patrones alimentarios muestran una elevada ingesta de pan, ocupando el segundo lugar en el mundo, de bebidas azucaras y sodio, as&iacute; como una baja ingesta de frutas, verduras, legumbres, l&aacute;cteos y pescado (22).</font></p>     <p><font face="Verdana" size="2">Con respecto a los l&iacute;pidos, el presente estudio no mostr&oacute; asociaci&oacute;n entre su consumo y los niveles de HbA1c. Sin embargo, estudios muestran que el consumo de &aacute;cidos grasos monoinsaturados (MUFA) disminuye la HbA1c. Por ejemplo, el meta an&aacute;lisis realizado por Schwingshackl y cols. reporta que la ingesta &gt; 12% de (MUFA) aparentemente reduce HbA1c (23,24). Se postula la capacidad del aceite de oliva de mejorar la respuesta a las incretinas parece aumentar el GLP-1 hormona antidiab&eacute;tica secretada por las c&eacute;lulas del &iacute;leon, que act&uacute;a a nivel pancre&aacute;tico aumentando la secreci&oacute;n de insulina y a nivel perif&eacute;rico aumenta la insulinosensibilidad (25).</font></p>     <p><font face="Verdana" size="2">Otro estudio de intervenci&oacute;n a pacientes diab&eacute;ticos a quienes se les dio durante 12 semanas un mix de nueces, almendras, pistachos, pacanas, avellanas, macadamias y casta&ntilde;as de caju (75 g/d&iacute;a), todos buenas fuentes de MUFAS y fibra dietaria, mostr&oacute; una reducci&oacute;n significativa de la HbA1c frente al grupo control (26), resultado similar a lo realizado en otra intervenci&oacute;n en diab&eacute;ticos con man&iacute; (27). Por el contrario el consumo de poliinsaturados de la familia omega 3 no presenta efectos sobre la HbA1c tal como lo muestra el meta an&aacute;lisis realizado por Hartweg y cols. (28). Sin embargo, el estudio realizado por Harding y cols. indic&oacute; que en mujeres diab&eacute;ticas el consumo de pescado azul rico en &aacute;cidos grasos poliinsaturados de la familia omega 3 se asociaba a menor HbA1c. En cambio, el pescado frito incrementaba la HbA1c (29). Finalmente el consumo de grasa saturada se ha asociado como un factor de riesgo en el incremento de HbA1c (30). En Chile se observa una baja ingesta de pescado grasos rico en omega 3 y elevado consumo de grasas saturadas y aceite de maravilla rico en omega 6, patrones alimentarios que no est&aacute;n asociados a disminuir la HbA1c (22).</font></p>     <p><font face="Verdana" size="2">Un estudio de cohorte en diab&eacute;ticos tipo 1 mostr&oacute; que el alto consumo de prote&iacute;nas vegetales (&gt; 29 g/d&iacute;a) y de fibra dietaria (&gt; 18 g/d&iacute;a) se asocia a una baja HbA1c (31). Otro estudio transversal realizado en diab&eacute;ticos tipo 2 japoneses mostr&oacute; que la ingesta de fibra dietaria se asociaba a una reducci&oacute;n de la HbA1c (32). Finalmente un meta an&aacute;lisis mostr&oacute; que una ingesta alta en fibra de hasta 42 g/d&iacute;a o suplementos de fibra de hasta 15 g/d&iacute;a reduc&iacute;a los valores absolutos de HbA1c (33). Sin embargo, en nuestro estudio la ingesta de fibra no present&oacute; asociaci&oacute;n con los niveles de HbA1c.</font></p>     <p><font face="Verdana" size="2">Entre las debilidades del presente estudio podemos nombrar que es un estudio transversal, por lo que solo podemos hablar de asociaci&oacute;n y no causalidad. Adem&aacute;s, en la ingesta de CHO no se cuantific&oacute; el consumo de sacarosa sino que se agrup&oacute; todo en CHO y en el caso de los l&iacute;pidos solo se evalu&oacute; el consumo total y no se evalu&oacute; seg&uacute;n saturaci&oacute;n.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Conclusi&oacute;n</b></font></p>     <p><font face="Verdana" size="2">Una ingesta elevada de CHO de r&aacute;pida absorci&oacute;n altos en sacarosa y bajos en fibra se asocia como un factor de riesgo en el incremento de HbA1c.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">Para el control de la glicemia y reducci&oacute;n de HbA1c es importante controlar la ingesta y tipo de CHO. No hay una distribuci&oacute;n &oacute;ptima de macronutrientes recomendada que haya sido identificada, todo depende de los objetivos metab&oacute;licos y nutricionales de cada individuo con diabetes (3). La evidencia disponible no muestra efectos adversos en sensibilidad a la insulina con una ingesta mayor de CHO, incluso disminuye la resistencia a la insulina siempre que se acompa&ntilde;e de fibra dietaria (9).</font></p>     <p><font face="Verdana" size="2">La ingesta total de energ&iacute;a y el patr&oacute;n de alimentaci&oacute;n saludable se deben priorizar sobre la distribuci&oacute;n de macronutrientes (34,35).</font></p>     <p><font face="Verdana" size="2">En el adulto mayor no existen recomendaciones espec&iacute;ficas que hayan logrado objetivos terap&eacute;uticos y nutricionales &oacute;ptimos (36).</font></p>     <p><font face="Verdana" size="2">Es esencial que los pacientes en tratamiento para diabetes soliciten asesor&iacute;a de un experto en nutrici&oacute;n especializado en diabetes quien, en colaboraci&oacute;n con el equipo m&eacute;dico, determinar&aacute; el tratamiento para cumplir con los objetivos individuales del paciente.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Bibliograf&iacute;a</b></font></p>     <!-- ref --><p><font face="Verdana" size="2">1. (WHO) World Health Organization. Diabetes facts 2008.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=3848823&pid=S0212-1611201600010001200001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">2. (CDC) Centers for Disease Control and Prevention. Diabetes data and trends 2008. Available at: <a target="_blank" href="http://apps.nccd.cdc.gov/DDTSTRS/default.aspx">http://apps.nccd.cdc.gov/DDTSTRS/default.aspx</a>.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=3848825&pid=S0212-1611201600010001200002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    ]]></body>
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<body><![CDATA[<p><font face="Verdana" size="2"><a href="#top"><img border="0" src="/img/revistas/nh/v33n1/seta.gif" width="15" height="17"></a><a name="bajo"></a><b>Direcci&oacute;n para correspondencia:</b>    <br>Samuel Dur&aacute;n Ag&uuml;ero.    <br>Universidad San Sebasti&aacute;n, Lota 2465.    <br>Providencia. Chile    <br>e-mail: <a href="mailto:samuel.duran@uss.cl">samuel.duran@uss.cl</a></font></p>     <p><font face="Verdana" size="2">Recibido: 06/11/15    <br>Aceptado: 16/11/15</font></p>      ]]></body><back>
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