<?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>1688-0420</journal-id>
<journal-title><![CDATA[Revista Uruguaya de Cardiología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Urug.Cardiol.]]></abbrev-journal-title>
<issn>1688-0420</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Uruguaya de Cardiología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1688-04202012000300021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Endotelio, inflamación e hipertensión arterial]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manfredi Carabetti]]></surname>
<given-names><![CDATA[José Aníbal]]></given-names>
</name>
</contrib>
</contrib-group>
<aff id="A">
<institution><![CDATA[,  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2012</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2012</year>
</pub-date>
<volume>27</volume>
<numero>3</numero>
<fpage>413</fpage>
<lpage>417</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_arttext&amp;pid=S1688-04202012000300021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_abstract&amp;pid=S1688-04202012000300021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_pdf&amp;pid=S1688-04202012000300021&amp;lng=en&amp;nrm=iso"></self-uri><kwd-group>
<kwd lng="es"><![CDATA[HIPERTENSIÓN]]></kwd>
<kwd lng="es"><![CDATA[DISFUNCIÓN ENDOTELIAL]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[   <basefont size="3"> <multicol gutter="18" cols="2"></multicol>     <p align="left"><font size="2" face="Verdana">    <br>  </font>  </p>      <p align="left"><font face="Verdana" size="2"><b>Revisi&oacute;n&nbsp;</b></font></p>      <p align="left"><b><font face="Verdana" size="4">Endotelio, inflamaci&oacute;n  e hipertensi&oacute;n arterial&nbsp; </font></b></p>      <p align="left"><font face="Verdana" size="2"> Dr. Jos&eacute; An&iacute;bal Manfredi Carabetti </font><font color="#d62437" face="Candara" size="4"> <a href="#1."><font face="Verdana" size="2"><sup>1</sup></font></a></font><font face="Verdana" size="2">&nbsp; </font> <font face="Verdana"><font size="2">    <br>  </font>  <basefont size="3"> </font> </p>      <p align="left"><font face="Verdana" size="2"><a name="1."></a> 1. Cardi&oacute;logo. Ex Prof. Adjto. de: Cardiolog&iacute;a, Ecocardiograf&iacute;a y Medicina Interna.    <br>  Correspondencia: </font><font color="#1f1a17" face="Verdana" size="2"> <a href="joseanibalmanfredi@yahoo.com">joseanibalmanfredi@yahoo.com</a></font><font face="Verdana" size="2">&nbsp; </font></p>      <p align="left"> <basefont size="3"> <multicol gutter="18" cols="2"></multicol> </p>      ]]></body>
<body><![CDATA[<p align="left"> <font face="Verdana" size="2"><b>Palabras clave:</b>    <br>  &nbsp;&nbsp;&nbsp;&nbsp;HIPERTENSI&Oacute;N    <br>  &nbsp;&nbsp;&nbsp;&nbsp;DISFUNCI&Oacute;N ENDOTELIAL&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2">     <br>  </font></p>  <multicol gutter="18" cols="2"></multicol>     <p align="left"><font face="Verdana" size="2"> <b>Estr&eacute;s oxidativo, inflamaci&oacute;n vascular, disfunci&oacute;n endotelial e hipertensi&oacute;n arterial&nbsp;</b> </font></p>      <p align="left"><font face="Verdana" size="2"> Cuando las arterias est&aacute;n enfermas ocurren hechos metab&oacute;licos, hemodin&aacute;micas y reol&oacute;gicos, cuyo escenario es la pared arterial y su endotelio.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> La hipertensi&oacute;n arterial es uno de los hechos hemodin&aacute;micas que se pueden medir en personas con alteraci&oacute;n metab&oacute;lica y riesgo de complicaciones card&iacute;acas, vasculares y de mortalidad. La hipertensi&oacute;n arterial ocurre en m&uacute;ltiples patolog&iacute;as y situaciones fisiopatol&oacute;gicas que determinan aumento de la presi&oacute;n arterial dentro de los vasos arteriales, lo que se asocia a la mayor incidencia de complicaciones. En las personas con hipertensi&oacute;n arterial, m&aacute;s all&aacute; del aumento de la presi&oacute;n arterial dentro de las arterias que demuestra el esfigmoman&oacute;metro, pueden detectarse con frecuencia otras alteraciones: disfunci&oacute;n endotelial, aumento de la resistencia vascular perif&eacute;rica y de la rigidez arterial, entre otras.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> La hipertensi&oacute;n arterial se asocia a aumento del estr&eacute;s oxidativo </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#1"><font face="Verdana"><sup>1</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup><a name=".1"></a>, resistencia a la insulina, inflamaci&oacute;n vascular y disfunci&oacute;n endotelial </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#2"><font face="Verdana"><sup>2</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup><a name=".2"></a>. La resistencia a la insulina es el estado metab&oacute;lico de la inflamaci&oacute;n </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#3"><font face="Verdana"><sup>3</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup><a name=".3"></a> y en personas con hipertensi&oacute;n arterial es alta su prevalencia. La obesidad </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#4"><font face="Verdana"><sup>4</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup><a name=".4"></a>, la resistencia a la insulina y la inflamaci&oacute;n vascular </font><font color="#1f1a17" face="Century Schoolbook" size="2"> <a href="#2"><font face="Verdana"><sup>(2</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup> son predictores independientes del desarrollo de hipertensi&oacute;n arterial. La hipertensi&oacute;n arterial se produce por el estr&eacute;s oxidativo de las arterias que se asocia a inflamaci&oacute;n vascular y a disfunci&oacute;n endotelial </font><font face="Verdana" size="2"><sup>(</sup></font><sup><font color="#1f1a17" face="Verdana" size="2"><a href="#1">1</a></font><font face="Verdana" size="2">,</font><font color="#1f1a17" face="Verdana" size="2"><a href="#2">2</a></font></sup><font face="Verdana" size="2"><sup>)</sup>. Estos factores est&aacute;n involucrados en el desarrollo de la hipertensi&oacute;n arterial y de mecanismos fisiopatol&oacute;gicos frecuentemente presentes, como la resistencia vascular perif&eacute;rica y la rigidez arterial aumentadas. La presencia y la magnitud de estos factores y mecanismos, var&iacute;an en los diferentes individuos, en relaci&oacute;n a su exposici&oacute;n ambiental nutricional, relaci&oacute;n entre la masa magra y la grasa visceral, actividad f&iacute;sica y estr&eacute;s y a su gen&eacute;tica.&nbsp; </font></p>  <font size="2" face="Verdana">      <br>  </font>      ]]></body>
<body><![CDATA[<p align="left"><font face="Verdana" size="2"> <b>Rol del endotelio en la salud y la enfermedad&nbsp;</b> </font></p>      <p align="left"><font face="Verdana" size="2"> El endotelio cumple funciones protectoras de la pared de las arterias, por sus propiedades antiinflamatoria, vasodilatadora y antitromb&oacute;tica.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> Cuando el endotelio est&aacute; disfuncionante la capacidad vasodilatadora est&aacute; disminuida, existe vasoconstricci&oacute;n, inflamaci&oacute;n vascular, predisposici&oacute;n a la aterosclerosis y a la trombosis. La disfunci&oacute;n endotelial es la primera manifestaci&oacute;n subcl&iacute;nica de la enfermedad aterotromb&oacute;tica y es precursora de sus manifestaciones anat&oacute;micas: aumento del espesor intima media y desarrollo de placas de ateroma.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> La disfunci&oacute;n endotelial coronaria </font> <font face="Verdana" size="2"><sup>(</sup></font><sup><font color="#1f1a17" face="Verdana" size="2"><a href="#5">5</a></font><font face="Verdana" size="2">,</font><font color="#1f1a17" face="Verdana" size="2"><a href="#6">6</a></font></sup><font face="Verdana" size="2"><sup>)</sup><a name=".5"></a><a name=".6"></a> y la disfunci&oacute;n endotelial perif&eacute;rica </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#7"><font face="Verdana"><sup>7</sup></font></a></font><font face="Verdana" size="2"><sup>-</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#9"><font face="Verdana"><sup>9</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup><a name=".7"></a><a name=".8"></a><a name=".9"></a>, se asocian a mayor incidencia de complicaciones aterotromb&oacute;ticas.&nbsp; </font></p>  <font size="2" face="Verdana">      <br>  </font>      <p align="left"><font face="Verdana" size="2"> <b>Medici&oacute;n no invasiva de la funci&oacute;n endotelial&nbsp;</b> </font></p>      <p align="left"><font face="Verdana" size="2"> La funci&oacute;n endotelial perif&eacute;rica puede determinarse en forma no invasiva por el estudio de ecograf&iacute;a vascular: vasodilataci&oacute;n mediada por flujo de la arteria humeral (VDMF), descrito por Celermeyer </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#10"><font face="Verdana"><sup>10</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup><a name=".10"></a> hace 20 a&ntilde;os. La VDMF consiste en medir la capacidad de vasodilataci&oacute;n arterial secundaria al est&iacute;mulo sobre el endotelio del incremento de la fuerza de cizallamiento que produce la hiperhemia reactiva, que sigue a la liberaci&oacute;n de una oclusi&oacute;n arterial transitoria </font><font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#11"><font face="Verdana"><sup>11</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup>.<a name=".11"></a>&nbsp; </font></p>      <p>&nbsp;</p>  <multicol gutter="18" cols="2"></multicol>     <p align="left"><font face="Verdana" size="2">La VDMF se produce en especial por la biodisponibilidad del &oacute;xido n&iacute;trico, sustancia vasodilatadora. La vasodilataci&oacute;n mediada por flujo VDMF de la arteria humeral es menos variable que el an&aacute;lisis de la onda de pulso con salbutamol, t&eacute;cnica &eacute;sta que no se adec&uacute;a para mediciones seriadas en ni&ntilde;os </font><sup><font face="Verdana" size="2">(</font><font color="#1f1a17" face="Verdana" size="2"><a href="#12">12</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"><a name=".12"></a>. La VDMF sigue siendo el m&eacute;todo m&aacute;s reproducible y de elecci&oacute;n para estudiar la funci&oacute;n endotelial en adultos y ni&ntilde;os </font><sup> <font face="Verdana" size="2">(</font><font color="#1f1a17" face="Verdana" size="2"><a href="#12">12</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"> y el m&aacute;s ampliamente estudiado.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> Se detecta disfunci&oacute;n endotelial, determinada por VDMF, en hijos normotensos de padres con hipertensi&oacute;n arterial, lo que sugiere que la disfunci&oacute;n endotelial puede preceder a la hipertensi&oacute;n arterial y participar en su patogenia </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#13">13</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2">.<a name=".13"></a>&nbsp; </font></p>      ]]></body>
<body><![CDATA[<p align="left"><font face="Verdana" size="2"> En personas con hipertensi&oacute;n arterial la disfunci&oacute;n endotelial es muy prevalente. La VDMF es tres a cuatro veces m&aacute;s prevalente que los dem&aacute;s marcadores de enfermedad cardiovascular precl&iacute;nica como la hipertrofia ventricular izquierda y la rigidez arterial global determinada por el cociente presi&oacute;n de pulso/volumen sist&oacute;lico indexado </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#14">14</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"><a name=".14"></a>. Como estos marcadores </font><font face="Verdana" size="2"><sup>(</sup></font><sup><font color="#1f1a17" face="Verdana" size="2"><a href="#15">15</a></font><font face="Verdana" size="2">,</font><font color="#1f1a17" face="Verdana" size="2"><a href="#16">16</a></font></sup><font face="Verdana" size="2"><sup>)</sup><a name=".15"></a><a name=".16"></a>, tambi&eacute;n se asocia en forma independiente a la incidencia de complicaciones cardiovasculares en personas con hipertensi&oacute;n arterial.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> En nuestra experiencia inicial con el estudio de VDMF en personas que estaban en prevenci&oacute;n primaria de aterotrombosis </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#17"><font face="Verdana"><sup>17</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup>,<a name=".17"></a> la disfunci&oacute;n endotelial (VDMF menor de 10%) estuvo presente en dos de cada tres pacientes con m&uacute;ltiples factores de riesgo y en 65% de las personas con antecedente de hipertensi&oacute;n arterial. La funci&oacute;n endotelial fue normal en el grupo control. La disfunci&oacute;n endotelial, el antecedente de hipertensi&oacute;n arterial y la presi&oacute;n arterial en rango de hipertensi&oacute;n arterial (igual o mayor a 140/90 mmHg) se asociaron a las manifestaciones subcl&iacute;nicas de aterosclerosis carot&iacute;dea: aumento del espesor intima media y presencia de placas de ateroma </font><sup> <font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#17">17</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2">.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> La disfunci&oacute;n endotelial tambi&eacute;n es muy prevalente en personas con los otros factores de riesgo cardiovascular cl&aacute;sicos: tabaquismo, hipercolesterolemia y diabetes, as&iacute; como en quienes tienen presi&oacute;n de pulso arterial aumentada, sindrome metab&oacute;lico de resistencia a la insulina e hiperinsulinemia compensadora, y sus componentes como la obesidad abdominal, el HDL colesterol disminuido, la hipertrigliceridemia y la glicemia de ayuno alterada, que son frecuentes en las personas con hipertensi&oacute;n arterial </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#17">17</a></font><font face="Verdana" size="2">,</font></sup><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#18"><font face="Verdana"><sup>18</sup></font></a></font><font face="Verdana" size="2"><sup>)<a name=".18"></a></sup>.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> En personas con s&iacute;ndrome metab&oacute;lico de resistencia a la insulina e hiperinsulinemia compensadora, la presencia de disfunci&oacute;n endotelial se asoci&oacute; a menor capacidad funcional al esfuerzo </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#19">19</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"><a name=".19"></a>. En personas con m&uacute;ltiples factores de riesgo cardiovascular, la respuesta hipertensiva al esfuerzo con presi&oacute;n arterial sist&oacute;lica mayor de 212 mmHg, se asoci&oacute; a la presencia de disfunci&oacute;n endotelial </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#18"><font face="Verdana"><sup>18</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup>. La disfunci&oacute;n endotelial perif&eacute;rica, determinada por la VDMF, se asoci&oacute; a la presi&oacute;n arterial sist&oacute;lica y de pulso en reposo y al m&aacute;ximo esfuerzo y al aumento de la presi&oacute;n arterial sist&oacute;lica y de pulso al esfuerzo </font> <font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#19"><font face="Verdana"><sup>19</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup>. La disfunci&oacute;n endotelial se asocia a rigidez arterial aumentada en personas con hipertensi&oacute;n arterial </font><font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#14"><font face="Verdana"><sup>14</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup>.La rigidez arterial, determinada por la velocidad de onda de pulso, y la disfunci&oacute;n endotelial, determinada por la VDMF, se asociaron en forma independiente a la presi&oacute;n arterial sist&oacute;lica al esfuerzo en un reciente estudio </font><sup> <font color="#1f1a17" face="Verdana" size="2"><a href="#20">(20</a></font><font face="Verdana" size="2">)<a name=".20"></a></font></sup><font face="Verdana" size="2">.&nbsp; </font></p>  <font size="2" face="Verdana">      <br>  &nbsp;<img style="width: 539px; height: 394px;" alt="" src="/img/revistas/ruc/v27n3/3a21g1.JPG">     <br>      <br>  </font>      <p align="left"><font face="Verdana" size="2"><b>Pron&oacute;stico de la disfunci&oacute;n endotelial en hipertensi&oacute;n arterial&nbsp;</b> </font></p>      <p align="left"><font face="Verdana" size="2"> La disfunci&oacute;n endotelial perif&eacute;rica es un factor pron&oacute;stico independiente de complicaciones cardiovasculares en personas con hipertensi&oacute;n arterial </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#7">7</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2">.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> El &uacute;ltimo metaan&aacute;lisis de los estudios prospectivos de VDMF, que incluy&oacute; 14 grandes estudios, de 5.547 pacientes seguidos durante a&ntilde;os, demuestra que la VDMF de la arteria humeral es predictora independiente del desarrollo complicaciones cardiovasculares y de mortalidad </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#21">21</a></font><font face="Verdana" size="2">)<a name=".21"></a></font></sup><font face="Verdana" size="2">.&nbsp; </font></p>      ]]></body>
<body><![CDATA[<p align="left"><font face="Verdana" size="2"> La disfunci&oacute;n endotelial perif&eacute;rica determinada por la VDMF de la arteria humeral en mujeres postmenop&aacute;usicas en prevenci&oacute;n primaria, tambi&eacute;n es predictora independiente del desarrollo de diabetes tipo 2 </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#22">22</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"><a name=".22"></a>. La disfunci&oacute;n endotelial es un determinante de la rigidez arterial en los hipertensos arteriales que asocian diabetes 2, lo que sugiere que en ellos la disminuci&oacute;n de la distensibilidad arterial involucra mecanismos dependientes de endotelio </font><sup> <font color="#1f1a17" face="Verdana" size="2"><a href="#23">(23</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2">.<a name=".23"></a>&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> La disfunci&oacute;n endotelial es un factor pron&oacute;stico independiente de complicaciones cardiovasculares en personas con hipertensi&oacute;n arterial, incluso en quienes se ha controlado la hipertensi&oacute;n arterial con el tratamiento. En ese estudio prospectivo, de mujeres postmenop&aacute;usicas con su hipertensi&oacute;n controlada con el tratamiento, y promedio de cifras de presi&oacute;n arterial pr&oacute;ximas a 130/80 mmHg, el grupo con funci&oacute;n endotelial normal (VDMF mediada por flujo mayor de 10%) tuvo significativamente mayor porcentaje de sobrevida libre de eventos cardiovasculares, que el grupo de mujeres con igual presi&oacute;n arterial y con disfunci&oacute;n endotelial (VDMF mediada por flujo menor de 10%) </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#8">8</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2">.&nbsp; </font></p>  <font size="2" face="Verdana">      <br>  </font>      <p align="left"><font face="Verdana" size="2"> <b>Tratamiento: m&aacute;s que solo disminuir la presi&oacute;n arterial&nbsp;</b> </font></p>      <p align="left"><font face="Verdana" size="2"> El tratamiento intensivo e integral con h&aacute;bitos saludables de vida mejora al mismo tiempo la funci&oacute;n endotelial, la presi&oacute;n arterial, el metabolismo lip&iacute;dico y gluc&iacute;dico y el pron&oacute;stico cardiovascular y metab&oacute;lico.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> El ejercicio regular y frecuente, de tres horas semanales o m&aacute;s, se asocia a mejor&iacute;a de la resistencia a la insulina, de la hiperinsulinemia compensadora, los par&aacute;metros lip&iacute;dicos y gluc&iacute;dicos, inflamatorios, de la presi&oacute;n arterial y de la funci&oacute;n endotelial.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> La nutrici&oacute;n saludable, con reducci&oacute;n del exceso de peso corporal, beneficia la funci&oacute;n endotelial y la presi&oacute;n arterial. La dieta rica en omega 3 y vegetales que contiene abundantes antioxidantes mejora la funci&oacute;n endotelial, como lo hace la vitamina C </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#24">24</a></font><font face="Verdana" size="2">)<a name=".24"></a> </font> </sup><font face="Verdana" size="2">y la suplementaci&oacute;n con resveratrol </font><sup><font color="#1f1a17" face="Verdana" size="2"><a href="#25">(25</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"><a name=".25"></a>. En un estudio reciente con chocolate negro rico en flavonoides se demostr&oacute; que reduce el deterioro de la funci&oacute;n endotelial, el aumento de la presi&oacute;n arterial y el estr&eacute;s oxidativo que se produce por la hiperglicemia postprandial, que se asocia a la patog&eacute;nesis de la aterosclerosis, lo que contribuir&iacute;a a la salud vascular </font><sup> <font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#26">26</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2">.<a name=".26"></a>&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> De los grupos de agentes antihipertensivos, no se ha demostrado mejor&iacute;a de la funci&oacute;n endotelial con diur&eacute;ticos solos. En un estudio que compar&oacute; atenolol, telmisartan, nifedipina hits, amlodipina, nebivolol y perindopril, &eacute;ste &uacute;ltimo fue el que mejor&oacute; la funci&oacute;n endotelial determinada por VDMF. El telmisartan, la nifedipina hits, la amlodipina, y el perindopril redujeron el estr&eacute;s oxidativo e incrementaron la capacidad antioxidante del plasma </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#27">27</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"><a name=".27"></a>. En un subestudio de funci&oacute;n endotelial del estudio Europa, de prevenci&oacute;n secundaria de aterosclerosis, la menor incidencia de complicaciones cardiovasculares en el grupo que recibi&oacute; perindopril, se asoci&oacute; a la mejor&iacute;a de la funci&oacute;n endotelial </font><sup> <font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#28">28</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"><a name=".28"></a>. De los f&aacute;rmacos betabloqueantes el que se asocia a mejor funci&oacute;n endotelial es el nebivolol </font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#29">29</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2">.<a name=".29"></a>&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> Las estatinas mejoran francamente la disfunci&oacute;n endotelial, incluso m&aacute;s all&aacute; del beneficio debido a la disminuci&oacute;n del LDL colesterol</font><sup><font face="Verdana" size="2"> (</font><font color="#1f1a17" face="Verdana" size="2"><a href="#30">30</a></font><font face="Verdana" size="2">)</font></sup><font face="Verdana" size="2"><a name=".30"></a>. En un estudio prospectivo doble ciego de 30 pacientes randomizados a pravastatina o placebo </font><font face="Verdana" size="2"><sup>(</sup></font><font color="#1f1a17" face="Century Schoolbook" size="2"><a href="#31"><font face="Verdana"><sup>31</sup></font></a></font><font face="Verdana" size="2"><sup>)</sup><a name=".31"></a>, en el grupo que recib&iacute;a estatina se demostr&oacute; disminuci&oacute;n significativa de la presi&oacute;n arterial sist&oacute;lica (-8 mmHg), diast&oacute;lica (-5 mmHg), y de pulso (-3 mmHg), lo que puede atribuirse a que las estatinas mejoran las propiedades arteriales como la funci&oacute;n endotelial y la rigidez arterial.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> En personas con m&uacute;ltiples factores de riesgo e hipertensi&oacute;n arterial, con tratamiento integral e intensivo, nutricional, ejercicio y f&aacute;rmacos, hemos podido objetivar, junto con la mejor&iacute;a de la composici&oacute;n corporal y de la capacidad aer&oacute;bica, normalizaci&oacute;n de la funci&oacute;n endotelial, de la rigidez arterial global, de la presi&oacute;n arterial y estabilizaci&oacute;n o incluso regresi&oacute;n, parcial, de la aterosclerosis subcl&iacute;nica carot&iacute;dea, con disminuci&oacute;n del espesor intima media y del tama&ntilde;o y en ocasiones tambi&eacute;n del n&uacute;mero de las placas de ateroma.&nbsp; </font></p>      ]]></body>
<body><![CDATA[<p> <multicol gutter="18" cols="2"></multicol></p>      <p align="left"><font face="Verdana" size="2">El tratamiento integral e intensivo del s&iacute;ndrome metab&oacute;lico de resistencia a la insulina que incluye nutrici&oacute;n adecuada, optimizaci&oacute;n del peso y composici&oacute;n corporal y ejercicio, puede revertir la disfunci&oacute;n endotelial, la hipertensi&oacute;n arterial y mejorar la aterosclerosis.&nbsp; </font></p>  <font size="2" face="Verdana">      <br>  </font>      <p align="left"><font face="Verdana" size="2"> <b>Conclusiones&nbsp;</b> </font></p>      <p align="left"><font face="Verdana" size="2"> La detecci&oacute;n de disfunci&oacute;n endotelial perif&eacute;rica en personas con hipertensi&oacute;n arterial tiene importancia pron&oacute;stica y adem&aacute;s terap&eacute;utica porque permite titular la intensidad del tratamiento que se necesita para evitar las complicaciones.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> La correcci&oacute;n de la disfunci&oacute;n endotelial puede ser considerado un objetivo del tratamiento para procurar detener el proceso ateroscler&oacute;tico y mejorar el pron&oacute;stico.&nbsp; </font></p>      <p align="left"><font face="Verdana" size="2"> El tratamiento debe ser integral al incluir los diferentes aspectos hemodin&aacute;micos y metab&oacute;licos involucrados en el proceso de salud-enfermedad de cada individuo.&nbsp; </font></p>  <font size="2" face="Verdana">      <br>  </font>      <p align="left"><font face="Verdana" size="2"> <b>Bibliograf&iacute;a&nbsp;</b> </font></p>      <!-- ref --><p align="left"><font face="Verdana" size="2"><a name="1"></a> </font><font color="#1f1a17" face="Verdana" size="2"> <a href="#.1">1</a></font><font face="Verdana" size="2">.&nbsp;&nbsp;&nbsp;&nbsp;<b>Schulz E, Gori T, M&uuml;nzel T.</b> Oxidative stress and endothelial dysfunction in hypertension. 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J Hypertens 2010;28 (Suppl A): e203-e204.    &nbsp; </font></p>      <!-- ref --><p align="left"><font face="Verdana" size="2"><a name="32"></a> 32.&nbsp;&nbsp;&nbsp;&nbsp;<b>Glorioso N, Troffa C, Filigheddu F, Dettori F, Aldo Soro A, Parpaglia PP, et al.</b> Effect of the HMG-CoA reductase inhibitors on blood pressure in patients with essential hypertension and primary hypercholesterolemia. Hypertension 1999;34:1281-6.    &nbsp; </font></p>      <p> </p>       ]]></body><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
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