<?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>0034-7434</journal-id>
<journal-title><![CDATA[Revista Colombiana de Obstetricia y Ginecología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Colomb Obstet Ginecol]]></abbrev-journal-title>
<issn>0034-7434</issn>
<publisher>
<publisher-name><![CDATA[Federación Colombiana de Obstetricia y GinecologíaRevista Colombiana de Obstetricia y Ginecología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-74342003000200004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Embarazo y metabolismo de los carbohidratos]]></article-title>
<article-title xml:lang="en"><![CDATA[Carbohydrate metabolism during pregnancy]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Osorio O]]></surname>
<given-names><![CDATA[José Henry]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad de Caldas Línea de Investigación en Bioquímica y Salud ]]></institution>
<addr-line><![CDATA[Manizales ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2003</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2003</year>
</pub-date>
<volume>54</volume>
<numero>2</numero>
<fpage>97</fpage>
<lpage>106</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0034-74342003000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0034-74342003000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0034-74342003000200004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[La producción y regulación de la glucosa, así como el balance neto entre los requerimientos de cada sistema orgánico determinan las vías metabólicas requeridas en la producción de energía. Durante el embarazo normal, la glucosa y los combustibles metabólicos son suministrados al feto de una manera bien regulada. La diabetes durante el embarazo es una de las principales causas de alteración en el metabolismo materno afectando la glucorregulación y el desarrollo fetal. La presente revisión hace enfásis en el metabolismo de los carbohidratos, y los principales procesos para la producción de energía mediante el uso de estas biomoléculas durante el período gestacional.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The production and regulation of glucose, as well as the net balance between systemic requirements, decide the necessary metabolic pathways for energy production. During normal pregnancy, the glucose and metabolic fuels are provided in a well-regulated manner. Diabetes in pregnancy is one of the principal causes of changes in maternal metabolism that affects fetal development and alters neonatal gluco-regulation. The present review is focused on carbohydrate metabolism, and the description of the main processes for energy production and its use during the gestational period.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[embarazo]]></kwd>
<kwd lng="es"><![CDATA[metabolismo.]]></kwd>
<kwd lng="es"><![CDATA[carbohidratos]]></kwd>
<kwd lng="en"><![CDATA[pregnancy]]></kwd>
<kwd lng="en"><![CDATA[metabolism]]></kwd>
<kwd lng="en"><![CDATA[carbohydrates]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p>    <center><b>Embarazo y metabolismo de los carbohidratos</b></center></p>     <p>    <center>Jos&eacute; Henry Osorio O.</center></p>     <p>    <center>Recibido: junio 12/2002 - Revisado: junio 25/2002 - Aceptado: octubre 2002</center></p>     <p>* Profesor Asociado. Director de la l&iacute;nea de Investigaci&oacute;n en Bioqu&iacute;mica y Salud. Universidad de Caldas. Manizales. Colombia. Instituto de Bioqu&iacute;mica Cl&iacute;nica. Facultad de Medicina. Universidad Aut&oacute;noma de Barcelona. Espa&ntilde;a.</p>     <p><b>RESUMEN</b></p>     <p>La producci&oacute;n y regulaci&oacute;n de la glucosa, as&iacute; como el balance neto entre los requerimientos de cada sistema org&aacute;nico determinan las v&iacute;as metab&oacute;licas requeridas en la producci&oacute;n de energ&iacute;a. Durante el embarazo normal, la glucosa y los combustibles metab&oacute;licos son suministrados al feto de una manera bien regulada. La diabetes durante el embarazo es una de las principales causas de alteraci&oacute;n en el metabolismo materno afectando la glucorregulaci&oacute;n y el desarrollo fetal. La presente revisi&oacute;n hace enf&aacute;sis en el metabolismo de los carbohidratos, y los principales procesos para la producci&oacute;n de energ&iacute;a mediante el uso de estas biomol&eacute;culas durante el per&iacute;odo gestacional.</p>     <p><b>Palabras clave:</b> embarazo, metabolismo, carbohidratos.</p>     ]]></body>
<body><![CDATA[<p>    <center><b>Carbohydrate metabolism during pregnancy</b></center></p>     <p><b>SUMMARY</b></p>     <p>The production and regulation of glucose, as well as the net balance between systemic requirements, decide the necessary metabolic pathways for energy production. During normal pregnancy, the glucose and metabolic fuels are provided in a well-regulated manner. Diabetes in pregnancy is one of the principal causes of changes in maternal metabolism that affects fetal development and alters neonatal gluco-regulation. The present review is focused on carbohydrate metabolism, and the description of the main processes for energy production and its use during the gestational period.</p>     <p><b>Key words:</b> pregnancy, metabolism, carbohydrates.</p> <b>    <p>INTRODUCCI&Oacute;N</p> </b>    <p>Las prote&iacute;nas, los &aacute;cidos nucleicos, los l&iacute;pidos y los carbohidratos son considerados los cuatro grupos mayores de biomol&eacute;culas. Los carbohidratos conforman la mayor parte de la materia org&aacute;nica en el planeta, sirviendo como reservas de energ&iacute;a; combustibles e intermediarios metab&oacute;licos; componentes de los &aacute;cidos nucleicos; elementos estructurales en paredes celulares de bacterias, plantas, y exoesqueletos de artr&oacute;podos. Adem&aacute;s se encuentran combinados con prote&iacute;nas y l&iacute;pidos formando mol&eacute;culas complejas que garantizan la vida en los organismos vivos, y est&aacute;n presentes en las superficies celulares para los procesos de reconocimiento c&eacute;lula-c&eacute;lula.(1) Qu&iacute;micamente son compuestos aldeh&iacute;dicos o cet&oacute;nicos con m&uacute;ltiples grupos hidroxilo y la glucosa es el centro de todo su metabolismo, siendo la fuente universal de combustible para la c&eacute;lula humana y la fuente de carbono para la s&iacute;ntesis de muchos otros compuestos.(2) Otros az&uacute;cares de la dieta (principalmente fructosa y galactosa), son convertidos a glucosa o intermediarios del metabolismo de la glucosa, siendo esta precursor fundamental de compuestos no-carbohidratos, como l&iacute;pidos (&aacute;cidos grasos, colesterol, hormonas esteroideas), amino&aacute;cidos, y &aacute;cidos nucleicos.(3) Solo aquellos compuestos sintetizados a partir de vitaminas, amino&aacute;cidos esenciales y &aacute;cidos grasos esenciales, no pueden ser sintetizados a partir de la glucosa en humanos.(4)</p>     <p>En la presente revisi&oacute;n, hacemos &eacute;nfasis en su metabolismo, por lo cual se hace necesario recordar una serie de caracter&iacute;sticas de este gran grupo de compuestos, antes de avanzar describiendo procesos de degradaci&oacute;n o s&iacute;ntesis. Temas como el metabolismo de prote&iacute;nas y l&iacute;pidos, gasto energ&eacute;tico y balance de nitr&oacute;geno, cambios metab&oacute;lico-hormonales, y bases funcionales placentarias han sido revisadas previamente.(4,5) Se utilizar&aacute;n siglas internacionales para diferentes compuestos y enfermedades.</p> <b>    <p>ABSORCI&Oacute;N Y DISTRIBUCI&Oacute;N DE AZ&Uacute;CARES</p> </b>    <p>Los carbohidratos de la dieta son digeridos en el intestino materno a trav&eacute;s de enzimas pancr&eacute;aticas e hidrolasas.(6) Los productos finales de la digesti&oacute;n son D-glucosa, D-galactosa y D-fructosa.(7) Estos monosac&aacute;ridos son absorbidos por los enterocitos maduros del duodeno y yeyuno.(8) La absorci&oacute;n de glucosa ocurre en dos etapas: co-transporte con Na+ del lumen intestinal al enterocito con consumo de energ&iacute;a,(9) y transporte facilitado hacia la sangre mediante los transportadores de glucosa 2 (GLUT 2) sin incurrir en gasto de energ&iacute;a.(10) Los transportadores de glucosa existen en diferentes c&eacute;lulas como una familia de prote&iacute;nas similares (isoformas), con un 50% a 76% de similitud en la cadena de amino&aacute;cidos.</p>     ]]></body>
<body><![CDATA[<p>La galactosa es absorbida utilizando los mismos mecanismos de la glucosa,(12) mientras que la fructosa ingresa y abandona las c&eacute;lulas abortivas del epitelio intestinal mediante difusi&oacute;n facilitada,(13) y el transportador encargado de llevarla al torrente sangu&iacute;neo es el GLUT 5, el cual puede transportar tambi&eacute;n glucosa pero muestra mayor actividad con fructosa.(14) Por razones a&uacute;n desconocidas la fructosa se absorbe a mayor velocidad cuando es ingerida como sucrosa que cuando se ingiere sola,(15) a una de las razones fundamentales para evitar la sucrosa y preferir el consumo de frutas o zumos de frutas cuando se recomiendan ciertos tipos de dieta para reducci&oacute;n de peso.(16)</p>     <p>Las propiedades de los transportadores de glucosa var&iacute;an dependiendo del tipo de tejido,(17) en el h&iacute;gado, la <I>K</I><SUB>m</SUB> para el transportador de glucosa es relativamente alto, comparado con el de los otros tejidos,(18) favoreciendo el flujo neto de glucosa al interior del h&iacute;gado cuando la concentraci&oacute;n de glucosa sangu&iacute;nea se incrementa despu&eacute;s de la ingesta de alimento, o la salida cuando los niveles en sangre disminuyen.(19) Cuando se tienen niveles de glucosa entre 18 y 54 mg/dL, se produce respuesta hipogluc&eacute;mica, con signos caracter&iacute;sticos, los cuales son el resultado de la disminuci&oacute;n en el aporte de glucosa al cerebro.(20)</p> <b>    <p>ALMACENAMIENTO Y UTILIZACI&Oacute;N DE RESERVAS ENERG&Eacute;TICAS</p>     <p>Homeostasis de la glucosa</p> </b>    <p>Durante la alimentaci&oacute;n, el h&iacute;gado almacena energ&iacute;a en forma de gluc&oacute;geno y triglic&eacute;ridos, estos &uacute;ltimos almacenados finalmente en el tejido adiposo.(21) Durante el ayuno, la glucosa y los cuerpos cet&oacute;nicos son liberados.(22) El mantenimiento de un nivel de glucosa normal en sangre depende de varios factores a saber: sistemas enzim&aacute;ticos glucog&eacute;nicos y glucog&eacute;nicos funcionales;(23) adecuado suministro de substratos gluconeog&eacute;nicos amino&aacute;cidos, glicerol, lactato;(24) adecuado suministro por parte de la b-oxidaci&oacute;n de los &aacute;cidos grasos para sintetizar glucosa y cuerpos cet&oacute;nicos;(25) funcionamiento normal del sistema endocrino para integrar y regular estos procesos.(26)</p>     <p>La glucosa, la insulina y el glucag&oacute;n son las mayores se&ntilde;ales para controlar la transici&oacute;n entre la alimentaci&oacute;n y el ayuno,(27) influenciando directa o indirectamente las enzimas que regulan el metabolismo hep&aacute;tico de los carbohidratos y los l&iacute;pidos,(28) orientando por lo tanto, los flujos metab&oacute;licos hacia almacenamiento de energ&iacute;a o liberaci&oacute;n de sustrato.(29)</p>     <p>Basado en el origen de la glucosa, se puede dividir la homeostasis en 3 grandes fases a saber:</p>     <p>1. Fase absortiva: la glucosa sangu&iacute;nea se deriva principalmente de los carbohidratos ex&oacute;genos durante 3 &oacute; 4 horas despu&eacute;s de la ingesti&oacute;n de alimentos.(30) Las concentraciones de insulina y glucosa se elevan, y las de glucag&oacute;n disminuyen.(31) La glucosa que excede las demandas de combustible es almacenada como gluc&oacute;geno en h&iacute;gado y m&uacute;sculo o convertida a l&iacute;pido y almacenada en tejido adiposo.(32) Esta es la &uacute;nica fase durante la cual el h&iacute;gado es un usuario neto de glucosa y la gluconeog&eacute;nesis es poco usada.(33)</p>     <p>2. Fase postabsortiva: la insulina retorna a niveles basales, el glucag&oacute;n se incrementa, y el h&iacute;gado es llamado a producir glucosa,(34) la cual se deriva principalmente del gluc&oacute;geno almacenado. El mayor usuario de glucosa durante esta fase es el cerebro, el cual oxida exclusivamente glucosa.(35) Otros consumidores obligados de glucosa como los gl&oacute;bulos rojos y la m&eacute;dula adrenal son especialmente activos durante este per&iacute;odo.(36) Los m&uacute;sculos y el tejido adiposo, sin embargo, usan glucosa a una tasa m&aacute;s baja comparada con la primera fase.(37) El gluc&oacute;geno presente en el h&iacute;gado despu&eacute;s de una noche de ayuno (90 g en adultos), es suficiente para cubrir los requerimientos de los tejidos perif&eacute;ricos, s&oacute;lo durante medio d&iacute;a.(38)</p>     <p>3. Fase de ayuno: esta fase comienza inmediatamente despu&eacute;s de una noche de ayuno fisiol&oacute;gico.(39) La gluconcong&eacute;nesis progresivamente reemplaza al gluc&oacute;geno como mayor fuente de glucosa sangu&iacute;nea.(40) Los dep&oacute;sitos de gluc&oacute;geno est&aacute;n agotados y el cerebro no comienza a utilizar todav&iacute;a cuerpos cet&oacute;nicos en cantidades significantes, lo que ser&aacute; efectivo en el ayuno avanzado.(41)</p> <b>    ]]></body>
<body><![CDATA[<p>ADAPTACIONES METAB&Oacute;LICAS</p> </b>    <p>Durante el primer y segundo trimestre de la gestaci&oacute;n, la hierfagia materna estimula el aumento de peso, el dep&oacute;sito de grasa, y el incremento en &iacute;ndice de masa magra.(42) Adem&aacute;s se produce un incremento marcado en los niveles de leptina e insulina s&eacute;ricas.(43) La sensibilidad de los tejidos a la insulina es normal o se encuentra aumentada,(44) y debido al consumo de glucosa por la placenta y al crecimiento fetal, la madre se encuentra predispuesta a la hipoglucemia del ayuno.(45) Durante el tercer trimestre del embarazo, la sensibilidad de los tejidos maternos a la insulina disminuye;(46) la utilizaci&oacute;n de glucosa por los tejidos maternos es menor, a pesar del aumento marcado de la producci&oacute;n de insulina y de la secreci&oacute;n de insulina estimulada por la glucosa.(47) La resistencia a la insulina promueve entonces la lip&oacute;lisis y la cetonemia del ayuno, as&iacute; como la hiperglucemia postprandial, (48) con lo cual una hay una mayor oferta de nutrientes al feto. El transporte placentario de nutrientes estimula la elevaci&oacute;n de la insulina fetal, (49) lo que promueve el crecimiento del feto con incremento del ac&uacute;mulo de tejido graso y el aumento de las reservas de gluc&oacute;geno hep&aacute;tico.(50)</p>     <p>El desarrollo de la resistencia materna a la insulina coincide con incrementos en las concentraciones s&eacute;ricas de las hormonas lactog&eacute;nicas prolactina (PRL),(51) lact&oacute;geno placentario (PL),(52) y hormona del crecimiento placentario humano (hGH-V).(53) Los lact&oacute;genos y los somat&oacute;genos reducen la sensibilidad a la insulina en los adipositos y c&eacute;lulas del m&uacute;sculo esquel&eacute;tico,(54,55) y estimulan la replicaci&oacute;n de las c&eacute;lulas beta, la transcripci&oacute;n del gen de la insulina, y la secreci&oacute;n de insulina dependiente de glucosa en los islotes pancre&aacute;ticos, (56) todo lo cual es responsible de la resistencia a la insulina y de la hiperinsulina presente en la gestaci&oacute;n avanzada.(57-61)</p>     <p><a href="/img/revistas/rcog/v54n2/a04fig1.jpg">Figura 1</a></p>     <p><b>TRANSPORTE PLACENTARIO DE GLUCOSA</b></p>     <p>La glucosa se encuentra permanentemente a disposici&oacute;n en la circulaci&oacute;n materna, cruzando a trav&eacute;s de la placenta mediante un sistema de transporte el cual se une a mol&eacute;culas de glucosa selectivamente,(62) con la limitante de poder ser saturado, como en el caso del transporte facilitado, aunque no a niveles fisiol&oacute;gicos de glucosa materna, (63) y poder tener competencia con otras sustancias. De acuerdo con esto, la transferencia es determinada mediante el gradiente materno-fetal, el flujo sangu&iacute;neo en ambos lados, y la morfolog&iacute;a de la placenta.(64) Los transportadores de glucosa placentarios son independientes de insulina y por lo tanto, la insulina solo puede alterar la transferencia de glucosa indirectamente causando cambios en los niveles arteriales de glucosa fetal o materna.(65) As&iacute; como lo hace con el ox&iacute;geno, la placenta toma la cantidad de glucosa que necesita.(66,67)</p>     <p>Debido a que en la unidad feto-placentaria y en el metabolismo energ&eacute;tico materno la leptina ha surgido &uacute;ltimamente como un factor metab&oacute;lico importante, y dado que no fue mencionado en la revisi&oacute;n de l&iacute;pidos en el embarazo 5 es conveniente actualizarnos incluyendo una secci&oacute;n dedicada a esta hormona en la presente revisi&oacute;n.</p> <b>    <p>LEPTINA</p> </b>     <p>La leptina es una hormona producida predominantemente por las c&eacute;lulas del tejido adiposo.(68,69) Los niveles circulantes de leptina son proporcionales a la masa de tejido adiposo. Por eso puede ser considerada como una se&ntilde;al del organismo para mostrar su nivel de reservas energ&eacute;ticas.(70) El receptor de la leptina (incluyendo todas las isoformas de mRNA) es expresado en muchos tejidos. Dicha hormona ejerce sus efectos directamente sobre el sistema nervioso central, para la modificaci&oacute;n del metabolismo energ&eacute;tico, es decir, disminuyendo la ingesti&oacute;n de alimento, incrementando el gasto de energ&iacute;a y disminuyendo la eficiencia metab&oacute;lica. Varios tejidos, entre ellos el epitelio de la gl&aacute;ndula mamaria,(71) la placenta,(72) el fundus g&aacute;strico,(73) y m&uacute;sculo (74) pueden producir leptina. Otras funciones relacionadas con el metabolismo &oacute;seo, la hematopoyesis y la angiogen&eacute;sis han sido descritas.(75-77) Adem&aacute;s han sido encontrados efectos sobre la madurez sexual, v&iacute;a receptores o neuronas hipotal&aacute;micas que hacen sinapsis directa o indirectamente con neuronas hipotal&aacute;micas para la producci&oacute;n de hormona liberadora de gonadotropina.(78) La hormona liberadora de gonadotropina causa secreci&oacute;n pituitaria de la hormona fol&iacute;culo-estimulante y de hormona lute&iacute;nizante.(79)</p>     <p>El tejido adiposo materno, es la &uacute;nica fuente significante de leptina en la madre, y no la relaci&oacute;n feto/placenta como podr&iacute;a pensarse. Los niveles de leptina en el segundo y tercer trimestre del embarazo llegan hasta el 150% a 200% de los niveles encontrados durante el primer trimestre, o en mujeres no gestantes.(80,81) Sin embargo, la placenta es una fuente significativa de la leptina circulante en la madre, y podemos decir entonces que los niveles de leptina materna son la sumatoria de la producida por el tejido adiposo materno y por la placenta. Los niveles de leptina en sangre de cord&oacute;n est&aacute;n generalmente correlacionados con el peso fetal,(82,83) pero muestran una mejor correlaci&oacute;n con la masa grasa del neonato.(84) Las concentraciones m&aacute;s altas de leptina en sangre arterial comparadas con la de sangre venosa, muestran que los niveles de leptina en sangre de cord&oacute;n reflejan la producci&oacute;n de leptina fetal.(85) Presumiblemente la leptina es producida por tejido adiposo, pero es posible que otros tejidos fetales contribuyan, como lo sugiere el hallazgo de que fetos de madres con diabetes mellitus gestacional presentan niveles de leptina m&aacute;s altos, lo cual ha sido correlacionado con el contenido de grasa abdominal.(86)</p>     ]]></body>
<body><![CDATA[<p>Como podemos ver entonces, de acuerdo a las funciones y efectos de esta hormona, los altos niveles de leptina observados en el embarazo, son de alguna manera contrarios a la homeostasis energ&eacute;tica durante la gestaci&oacute;n.</p>     <p>Cabr&iacute;a esperar que durante la gestaci&oacute;n se presentaran bajos niveles de leptina, ya que dicha hormona incrementa la ineficiencia metab&oacute;lica y disminuye la ingesta de alimentos. Tal parece que el embarazo, (al igual que la obesidad, otra condici&oacute;n caracterizada por niveles altos de leptina), es un estado de resistencia a la leptina, y por eso la hiperleptinemia podr&iacute;a ser una situaci&oacute;n compensatoria.(87) Sin embargo, la mayor&iacute;a de las teor&iacute;as sobre este t&oacute;pico en particular son diversas y necesitan todav&iacute;a ser comprobadas.</p>     <p>Las funciones de leptina en placenta y en el desarrollo fetal, as&iacute; como otro tipo de funciones en general, son revisadas por diversos autores.(88-90)</p> <b>    <p>DIABETES EN EL EMBARAZO</p> </b>    <p>Durante el embarazo podemos contar con mujeres diab&eacute;ticas propiamente dichas, es decir, aquellas que la han sufrido antes del embarazo; mujeres que la desarrollan durante el embarazo (diabetes gestacional); y un tercer grupo de mujeres en las cuales la intolerancia a la glucosa es excesiva, pero no francamente diab&eacute;ticas, conformando el grupo de tolerancia anormal a la glucosa del embarazo.(91) Dentro del primer grupo se encuentran aquellas madres insulino-dependientes y no insulino-dependientes.</p>     <p>Se debe tener en cuenta la tendencia a la hiperglucemia post-prandial fisiol&oacute;gica del embarazo, o estado de tolerancia a la glucosa, pero ante todo, debemos recordar que los factores de riesgo para la presentaci&oacute;n de un espectro de intolerancia a la glucosa, el cual puede aparecer posterior a la segunda mitad de la gestaci&oacute;n, con implicaciones patol&oacute;gicas, dependen de la edad materna, la historia familiar de diabetes, los factores &eacute;tnicos, y la obesidad;(92) sin que hasta el momento se cuente con una prueba est&aacute;ndar a nivel internacional para su diagn&oacute;stico.(93)</p>     <p>Los controles estrictos de los niveles de glucosa sangu&iacute;nea, con el objetivo de que sean mantenidos en el ayuno a un valor por debajo de 5 mmol/L y en estado postprandial por debajo de 7 mmol/L han sido valiosos en la reducci&oacute;n de la mortalidad y morbilidad perinatal.(94)</p>     <p>La hiperglucemia materna produce hiperglucemia fetal, generando hiperplasia pancre&aacute;tica del feto, lo que conlleva a hiperinsulinemia fetal con est&iacute;mulo anormal del crecimiento fetal y consecuencias tales como macrosom&iacute;a, organomegalia, eritropoyesis incrementada, y disminuci&oacute;n de la producci&oacute;n de surfactante, todo ello pudiendo originar a su vez, parto vaginal traum&aacute;tico, cardiomiopat&iacute;a hipertr&oacute;fica con hipertrofia septal y hepatomegalia, hipoglucemia neonatal, policiteia neonatal y enfermedad de la membrana hialina respectivamente.(95)</p>     <p><b>BIBLIOGRAF&Iacute;A</b></p>     <!-- ref --><p>1. 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