<?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>0864-0300</journal-id>
<journal-title><![CDATA[Revista Cubana de Investigaciones Biomédicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Invest Bioméd]]></abbrev-journal-title>
<issn>0864-0300</issn>
<publisher>
<publisher-name><![CDATA[ECIMED]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0864-03002012000100004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Aterosclerosis y afectación de la función cognitiva]]></article-title>
<article-title xml:lang="en"><![CDATA[Atherosclerosis and cognitive function impairment]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Piñeiro Lamas]]></surname>
<given-names><![CDATA[Regino]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Britto Rodríguez]]></surname>
<given-names><![CDATA[José Emilio]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez Padrón]]></surname>
<given-names><![CDATA[Ivo]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A02">
<institution><![CDATA[,Universidad de Ciencias Médicas  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="A01">
<institution><![CDATA[,Centro de Investigaciones y Referencias de Aterosclerosis  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2012</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2012</year>
</pub-date>
<volume>31</volume>
<numero>1</numero>
<fpage>37</fpage>
<lpage>45</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0864-03002012000100004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0864-03002012000100004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0864-03002012000100004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[La aterosclerosis es un proceso de origen multicausal y se acompaña de una gran variedad de manifestaciones clínicas y humorales. Son conocidos los factores de riesgo aterogénicos como dislipidemias, hipertensión arterial, diabetes mellitus, obesidad, tabaquismo, aumento de homocisteína y otros. La aterosclerosis lleva a la cardiopatía isquémica, enfermedad cerebro-vascular, enfermedad renal crónica, enfermedad arterial periférica y aneurismas ateroscleróticos. Es bien conocido que, por estar estrechamente ligada con la sangre y el oxígeno que necesitan todas las células del organismo, deja su huella en casi todos los órganos y tejidos del organismo, produciendo afectación en el sistema nervioso central y por lo tanto, en la esfera cognitiva. Los factores de riesgo ateroscleróticos que pueden afectar la función cognitiva principalmente son: hipertensión arterial, diabetes mellitus, dislipidemia, obesidad, síndrome metabólico, envejecimiento, aumento de la homocisteína sanguínea, aumento del fibrinógeno y tabaquismo. Se hace una revisión actualizada del tema, el cual consideramos de gran interés, para tener en cuenta en la asistencia médica diaria.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Atherosclerosis is a process of multicausal origin which is accompanied by a great variety of clinical and humoral manifestations. Atherogenic risk factors are well known. They include dyslipidemias, arterial hypertension, diabetes mellitus, obesity, smoking, increased homocysteine, and others. Atherosclerosis leads to ischemic heart disease, cerebrovascular disease, chronic renal disease, peripheral arterial disease and atherosclerotic aneurysms. As is well known, due to its close relation to the blood and the oxygen required by all cells in the body, the disease leaves an imprint in practically all organs and tissues, affecting the central nervous system and consequently the cognitive sphere as well. The atherosclerotic risk factors that may affect cognitive function are in the first place arterial hypertension, diabetes mellitus, dyslipidemia, obesity, metabolic syndrome, aging, increased blood homocysteine, increased fibrinogen and smoking. An updated review is conducted on the topic, which we consider to be of great interest. The review may be of use in daily medical practice.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aterosclerosis]]></kwd>
<kwd lng="es"><![CDATA[factores de riesgo de aterosclerosis]]></kwd>
<kwd lng="es"><![CDATA[función cognitiva]]></kwd>
<kwd lng="en"><![CDATA[atherosclerosis]]></kwd>
<kwd lng="en"><![CDATA[atherosclerosis risk factors]]></kwd>
<kwd lng="en"><![CDATA[cognitive function]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <div class=Section1>        <p align=right style='text-align:right'><b><span style='font-size:10.0pt; font-family:Verdana'>ART&Iacute;CULO DE REVISI&Oacute;N</span></b></p>       <p align=right style='text-align:right'>&nbsp;</p>      <p><b><span style='font-size:13.5pt;font-family:Verdana'>Aterosclerosis y afectaci&oacute;n de la funci&oacute;n cognitiva </span><o:p></o:p></b></p>      <p><b>&nbsp; <o:p></o:p></b></p>      <p><span class=SpellE><b><span style='font-family:Verdana'>Atherosclerosis</span></b></span><b><span style='font-family:Verdana'> <span class=SpellE>and</span> <span class=SpellE>cognitive</span> <span class=SpellE>function</span> <span class=SpellE>impairment</span> </span><o:p></o:p></b></p>        <p>&nbsp;</p>       <p>&nbsp; </p>        <p><span class=SpellE><b><span style='font-size:10.0pt;font-family:Verdana'>Dr.Cs</span></b></span><b><span style='font-size:10.0pt;font-family:Verdana'>. <span class=SpellE>Regino</span>      <span class=SpellE>Pi&ntilde;eiro</span> Lamas<span class=GramE>,<font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><sup>I</sup></b></font>      </span><span class=SpellE>Dr.Cs</span>. Jos&eacute; Emilio Fern&aacute;ndez-<span class=SpellE>Britto</span> Rodr&iacute;guez,<font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><sup>I</sup></b></font>      <span class=SpellE>Dr.Cs</span>. <span class=SpellE>Ivo</span> G&oacute;mez      Padr&oacute;n</span></b><span style='font-size:10.0pt;font-family:Verdana'><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><sup>II</sup></b></font>      </span></p>        <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><sup>I</sup></font>      <span style='font-size:10.0pt;font-family:Verdana'>Centro de Investigaciones y Referencias      de Aterosclerosis. <st1:PersonName ProductID="La Habana" w:st="on">La Habana</st1:PersonName>,      Cuba.     ]]></body>
<body><![CDATA[<br>     <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><sup>II</sup></font>      Universidad de Ciencias M&eacute;dicas. <st1:PersonName ProductID="La Habana" w:st="on">La Habana</st1:PersonName>, Cuba. </span> </p>       <p>&nbsp; </p>        <p>&nbsp; </p>      <div class=MsoNormal align=center style='text-align:center'>  <hr size=1 width="100%" noshade color="#aca899" align=center>  </div>      <p><b><span style='font-size:9.0pt;font-family:Verdana'>RESUMEN</span></b><b><span style='font-size:9.0pt'> </span></b><span style='font-size:9.0pt'><o:p></o:p></span></p>      <p><span style='font-size:10.0pt;font-family:Verdana'>La aterosclerosis es un proceso de origen <span class=SpellE>multicausal</span> y se acompa&ntilde;a de una gran variedad de manifestaciones cl&iacute;nicas y humorales. Son conocidos los factores de riesgo <span class=SpellE>aterog&eacute;nicos</span> como <span class=SpellE>dislipidemias</span>,&nbsp;hipertensi&oacute;n arterial, diabetes <span class=SpellE>mellitus</span>, obesidad,&nbsp; tabaquismo, aumento de <span class=SpellE>homociste&iacute;na</span> y otros. La aterosclerosis&nbsp; lleva a la cardiopat&iacute;a <span class=SpellE>isqu&eacute;mica</span>, enfermedad cerebro-vascular,&nbsp; enfermedad renal cr&oacute;nica, enfermedad arterial perif&eacute;rica y aneurismas <span class=SpellE>ateroscler&oacute;ticos</span>. Es bien conocido que, por estar estrechamente ligada con la sangre y el ox&iacute;geno que necesitan todas las c&eacute;lulas del organismo, deja su huella en casi todos los &oacute;rganos y tejidos del organismo,&nbsp; produciendo afectaci&oacute;n en el sistema nervioso central y por lo tanto, en la esfera cognitiva. Los factores de riesgo<b> </b><span class=SpellE>ateroscler&oacute;ticos</span> que pueden afectar la funci&oacute;n cognitiva principalmente son: hipertensi&oacute;n arterial, diabetes <span class=SpellE>mellitus</span>, <span class=SpellE>dislipidemia</span>, obesidad, s&iacute;ndrome metab&oacute;lico, envejecimiento, aumento de la <span class=SpellE>homociste&iacute;na</span> sangu&iacute;nea, aumento del <span class=SpellE>fibrin&oacute;geno</span> y tabaquismo. Se hace una revisi&oacute;n actualizada del tema, el cual consideramos de gran inter&eacute;s, para tener en cuenta en&nbsp; la asistencia m&eacute;dica diaria. </span></p>      <p><b><span style='font-size:10.0pt;font-family:Verdana'>Palabras clave: </span></b><span style='font-size:10.0pt;font-family:Verdana'>aterosclerosis, factores de riesgo de aterosclerosis, funci&oacute;n cognitiva. </span></p>      <div class=MsoNormal align=center style='text-align:center'>  <hr size=1 width="100%" noshade color="#aca899" align=center>  </div>      <p><b><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;text-transform: uppercase;mso-ansi-language:EN-GB'>Abstract</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;text-transform:uppercase; mso-ansi-language:EN-GB'> </span><span lang=EN-GB style='text-transform:uppercase; mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>Atherosclerosis is a process of <span class=SpellE>multicausal</span> origin which is accompanied by a great variety of clinical and <span class=SpellE>humoral</span> manifestations. <span class=SpellE>Atherogenic</span> risk factors are well known. They include <span class=SpellE>dyslipidemias</span>, arterial hypertension, diabetes mellitus, obesity, smoking, increased <span class=SpellE>homocysteine</span>, and others. Atherosclerosis leads to ischemic heart disease, <span class=SpellE>cerebrovascular</span> disease, chronic renal disease, peripheral arterial disease and atherosclerotic aneurysms. As is well known, due to its close relation to the blood and the oxygen required by all cells in the body, the disease leaves an imprint in practically all organs and tissues, affecting the central nervous system and consequently the cognitive sphere as well. The atherosclerotic risk factors that may affect cognitive function are in the first place arterial hypertension, diabetes mellitus, <span class=SpellE>dyslipidemia</span>, obesity, metabolic syndrome, aging, increased blood <span class=SpellE>homocysteine</span>, increased fibrinogen and smoking. An updated review is conducted on the topic, which we consider to be of great interest. The review may be of use in daily medical practice. </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      ]]></body>
<body><![CDATA[<p><b><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>Key words: </span></b><span lang=EN-GB style='font-size:10.0pt; font-family:Verdana;mso-ansi-language:EN-GB'>atherosclerosis, atherosclerosis risk factors, cognitive function. </span><span lang=EN-GB style='mso-ansi-language: EN-GB'><o:p></o:p></span></p>      <div class=MsoNormal align=center style='text-align:center'>  <hr size=1 width="100%" noshade color="#aca899" align=center>  </div>      <p>&nbsp;</p>      <p>&nbsp;</p>        <p><b><span style='font-family:Verdana'>INTRODUCCI&Oacute;N </span></b></p>      <p><span style='font-size:10.0pt;font-family:Verdana'>La aterosclerosis, es un proceso de origen <span class=SpellE>multicausal</span> y se acompa&ntilde;a de una gran variedad de manifestaciones cl&iacute;nicas y humorales. Cada d&iacute;a se puede afirmar con mayor certeza que los elementos que la integran se encuentran en el metabolismo general y circulando por la sangre dentro de las arterias, contribuyendo de manera directa a la homeostasis, la <span class=SpellE>hemoreolog&iacute;a</span> y la <span class=SpellE>hemodinamia</span>.<sup>1</sup><b> </b>Partiendo de este concepto, se interpreta que la aterosclerosis se produce como consecuencia de la descompensaci&oacute;n de los fen&oacute;menos de defensa del organismo, de los biomec&aacute;nicos y de los humorales, y que para cada una de estas acciones hay una respuesta inflamatoria que la acompa&ntilde;e. El objetivo de esta revisi&oacute;n es actualizar sobre la afectaci&oacute;n que produce la aterosclerosis en la esfera cognitiva. </span></p>      <p><span style='font-size:10.0pt;font-family:Verdana'>La lesi&oacute;n <span class=SpellE>ateroscler&oacute;tica</span> se manifiesta en las arterias el&aacute;sticas y musculares desde las edades m&aacute;s tempranas, como se ha podido demostrar en grandes e importantes estudios internacionales.<sup>2-4</sup> La aterosclerosis tiene 2 grandes vertientes de enfermedades. <span style='mso-bidi-font-style:italic'>La primera</span>, de las que dependen lo que se conoce como factores de riesgo <span class=SpellE>aterog&eacute;nicos</span>, dentro de los cuales se encuentran los factores considerados como cl&aacute;sicos (la <span class=SpellE>dislipidemias</span>, la hipertensi&oacute;n arterial, la diabetes <span class=SpellE>mellitus</span> tipo 2, la obesidad, el tabaquismo), y por otra parte los factores considerados como emergentes, entre los que se encuentran la resistencia a la insulina, los trastornos de la coagulaci&oacute;n, la <span class=SpellE>hiperhomocisteinemia</span>, algunos agentes infecciosos. La segunda vertiente agrupa a las enfermedades consecuentes de la aterosclerosis como son: la cardiopat&iacute;a <span class=SpellE>isqu&eacute;mica</span>, la enfermedad <span class=SpellE>cerebrovascular</span>, la enfermedad renal cr&oacute;nica, la enfermedad arterial perif&eacute;rica y los aneurismas <span class=SpellE>ateroscler&oacute;ticos</span>. Es bien conocido que la aterosclerosis, por estar estrechamente ligada con la sangre y el ox&iacute;geno que necesitan todas las c&eacute;lulas del organismo, deja su huella en casi todos los &oacute;rganos y tejidos de este. </span></p>      <p><span style='font-size:10.0pt;font-family:Verdana'>La aterosclerosis afecta la salud cardiovascular y tambi&eacute;n est&aacute; bien demostrado que produce afectaci&oacute;n en el sistema nervioso central y por lo tanto, en la esfera cognitiva. Las &aacute;reas del desarrollo <span class=SpellE>psico</span>-motor son: <i>cognitiva</i> (&aacute;rea del proceso del pensamiento, mediante habilidades de percepci&oacute;n, atenci&oacute;n, memoria y aprendizaje); m<i>otora</i> (actividad f&iacute;sica), <i>lenguaje</i> y <span class=SpellE><i>psico</i></span><i>-social</i>. </span></p>      <p><span style='font-size:10.0pt;font-family:Verdana'>Los factores de riesgo<b> </b><span class=SpellE>ateroscler&oacute;ticos</span> que pueden afectar la funci&oacute;n cognitiva (FC) principalmente son: hipertensi&oacute;n arterial, diabetes <span class=SpellE>mellitus</span>, <span class=SpellE>dislipidemia</span> (hipercolesterolemia), obesidad, s&iacute;ndrome metab&oacute;lico, envejecimiento, aumento de la <span class=SpellE>homociste&iacute;na</span> sangu&iacute;nea, aumento del <span class=SpellE>fibrin&oacute;geno</span> y tabaquismo. </span></p>        <p><span style='font-size:10.0pt;font-family:Verdana'>Se han realizado estudios      que se&ntilde;alan que los pacientes con enfermedad arterial perif&eacute;rica,      reflejo de la aterosclerosis, presentan <span class=SpellE><i>test</i></span>      cognitivos m&aacute;s pobres al compararlos con grupos controles.<sup>5,6</sup><b>      </b>Se ha se&ntilde;alado que la aterosclerosis subcl&iacute;nica (personas      sin evidencia cl&iacute;nica de enfermedad consecuente de la misma y engrosamiento      de &iacute;ntima-media de la arteria car&oacute;tida), presenta afectaci&oacute;n      del desempe&ntilde;o cognitivo.<sup>7</sup> Se ha observado por otros investigadores,      que el engrosamiento de la &iacute;ntima-media de la car&oacute;tida interna      se asoci&oacute; con mayor <span class=SpellE>prevalencia</span> de infartos      cerebrales silentes, mayor <span class=SpellE>hiperintensidad</span> de la      materia blanca del cerebro en la resonancia magn&eacute;tica nuclear, menor      volumen del cerebro y afectaci&oacute;n de la memoria.<sup>8</sup> Los cambios      en la materia blanca del cerebro relacionados con la edad, son frecuentes      con el envejecimiento de la poblaci&oacute;n y se asocian con afectaci&oacute;n      cognitiva. Se han realizado estudios que se&ntilde;alan que los factores de      riesgo de aterosclerosis en esta etapa de la vida, se adicionan a los efectos      adversos en <st1:PersonName ProductID="la FC" w:st="on">la FC</st1:PersonName>      propios de la edad, por lo que la diabetes <span class=SpellE>mellitus</span>,      la hipertensi&oacute;n arterial y otros factores de riesgo, deben ser controlados      para prevenir la disminuci&oacute;n de la esfera cognitiva principalmente      en el adulto mayor.<sup>9</sup> La edad avanzada, la hipertensi&oacute;n arterial      y el tabaquismo, entre otros, aumentan la progresi&oacute;n de la enfermedad      de los peque&ntilde;os vasos cerebrales, lo cual es paralelo a la disminuci&oacute;n      de <st1:PersonName ProductID="la FC.10" w:st="on">la FC.<sup>10</sup></st1:PersonName></span></p>       ]]></body>
<body><![CDATA[<p>&nbsp;</p>      <p><b><span style='font-family:Verdana;text-transform:uppercase'>Hipertensi&oacute;n arterial</span></b><span style='font-family:Verdana;text-transform:uppercase'> </span><span style='text-transform:uppercase'><o:p></o:p></span></p>        <p><span style='font-size:10.0pt;font-family:Verdana'>El estudio del Tercer Examen      Nacional de Salud y Nutrici&oacute;n (NHANES III), examin&oacute; la relaci&oacute;n      entre tensi&oacute;n arterial (TA) y desempe&ntilde;o cognitivo, en 6 163      hombres y mujeres de 60 a&ntilde;os y m&aacute;s, para valorar si <st1:PersonName ProductID="la TA" w:st="on">la      TA</st1:PersonName> elevada se asociaba con una mayor afectaci&oacute;n cognitiva.      Concluyeron que la hipertensi&oacute;n arterial no controlada, se asociaba      con menor FC al compararlos con los que presentaban TA normal, por lo que      el control &oacute;ptimo de esta puede ser &uacute;til para mejorar la disminuci&oacute;n      <span class=SpellE>neurocognitiva</span> en esta edad.<sup>11</sup> El NHANES III, examin&oacute;      la relaci&oacute;n entre tensi&oacute;n arterial y desempe&ntilde;o cognitivo      en 2 727 personas sanas entre 20 y 59 a&ntilde;os, y encontraron una relaci&oacute;n      peque&ntilde;a, pero significativa, entre <st1:PersonName ProductID="la TA" w:st="on">la TA</st1:PersonName> en reposo y el desempe&ntilde;o      cognitivo particularmente en j&oacute;venes sanos adultos.<sup>12</sup> La      hipertensi&oacute;n es conocida que induce muchos cambios en el organismo,      incluyendo hipertrofia <span class=SpellE>card&iacute;aca</span> y aterosclerosis,      entre otros, tiene efectos en el funcionamiento del cerebro, produciendo afectaci&oacute;n      en la esfera cognitiva no solo en la tercera edad, sino tambi&eacute;n en      adultos j&oacute;venes.<sup>13</sup><b> </b>No obstante, la hipertensi&oacute;n      y los trastornos cognitivos asociados son m&aacute;s frecuentes en la poblaci&oacute;n      de mayor edad. Estudios longitudinales han demostrado relaci&oacute;n entre      hipertensi&oacute;n arterial en el adulto mayor y afectaci&oacute;n cognitiva,      e incluso enfermedad de <span class=SpellE>Alzheimer</span>.<sup>14</sup>      La hipertensi&oacute;n es uno de los principales factores de riesgo de enfermedad      <span class=SpellE>cerebrovascular</span> y est&aacute; muy relacionada con      la disminuci&oacute;n de <st1:PersonName ProductID="la FC. La" w:st="on">la FC. La</st1:PersonName> mayor&iacute;a de los      estudios longitudinales han demostrado que <st1:PersonName ProductID="la FC" w:st="on">la FC</st1:PersonName> es inversamente proporcional a los valores de      tensi&oacute;n arterial medidos <st1:metricconverter ProductID="15 a" w:st="on">15      a</st1:metricconverter> 20 a&ntilde;os previos. En los pacientes con mayores      cifras de TA se observ&oacute; peor FC.<sup>15</sup> Se ha llamado la atenci&oacute;n      sobre el posible efecto protector del tratamiento antihipertensivo en favorecer      el desempe&ntilde;o cognitivo en los hipertensos, as&iacute; como el tratamiento      de la <span class=SpellE>insulinorresistencia</span>.<sup>13<span class=GramE>,16,17</span></sup> Los factores de riesgo <span class=SpellE>ateroscler&oacute;ticos</span>      y su tratamiento, son actuales campos de investigaci&oacute;n y parecen ser      prometedores para prevenir los da&ntilde;os cognitivos que estos presentan.      Se requieren realizar m&aacute;s estudios a largo plazo para lograr estos      objetivos, pues los resultados actuales son contradictorios.<sup>18</sup>      </span></p>       <p>&nbsp;</p>      <p><b><span style='font-family:Verdana;text-transform:uppercase'>Envejecimiento</span></b><span style='font-family:Verdana;text-transform:uppercase'> </span><span style='text-transform:uppercase'><o:p></o:p></span></p>        <p><span style='font-size:10.0pt;font-family:Verdana'>La afectaci&oacute;n cognitiva      es uno de los trastornos neurol&oacute;gicos m&aacute;s frecuentes en el envejecimiento<span style='color:red'>,</span>      Se ha se&ntilde;alado que los factores de riesgo <span class=SpellE>ateroscler&oacute;tico</span>,      tienen gran importancia en la afectaci&oacute;n de enfermedades <span class=SpellE>neurodegenerativas</span>      (<span class=SpellE>Alzheimer</span>), que conducen a p&eacute;rdida de la      autonom&iacute;a. La poblaci&oacute;n del mundo envejece, por lo que la prevenci&oacute;n      de estos cambios tiene gran importancia actual. El envejecimiento produce      deficiencias cognitivas y motoras, tanto en humanos como en animales. Se piensa      que se producen a trav&eacute;s de da&ntilde;os y disfunciones neuronales      que son el resultado de diferentes causas, que incluyen el da&ntilde;o <span class=SpellE>aterocler&oacute;tico</span>,      aumento del estr&eacute;s <span class=SpellE>oxidativo</span> y las modificaciones      de la composici&oacute;n de l&iacute;pidos del cerebro.<sup>13</sup> </span></p>       <p>&nbsp;</p>      <p><b><span style='font-family:Verdana;text-transform:uppercase'>Aumento de <st1:PersonName ProductID="LA HOMOCISTE&#205;NA" w:st="on">la homociste&iacute;na</st1:PersonName></span></b><span style='font-family:Verdana;text-transform:uppercase'> </span><span style='text-transform:uppercase'><o:p></o:p></span></p>      <p><span style='font-size:10.0pt;font-family:Verdana'>Diversos estudios plantean que la intervenci&oacute;n nutricional con alimentos ricos en antioxidantes o &aacute;cidos grasos esenciales, pueden retrasar la progresi&oacute;n del declive cognitivo en el envejecimiento.<sup>19</sup> El &aacute;cido f&oacute;lico es una vitamina esencial en el desarrollo del sistema nervioso central. La actividad insuficiente de <span class=SpellE>folatos</span> en el per&iacute;odo <span class=SpellE>preconcepcional</span> y en el inicio del embarazo, puede producir afectaci&oacute;n del tubo <span class=SpellE>neural</span>. En la vida adulta, su deficiencia puede provocar una anemia caracter&iacute;stica (<span class=SpellE>megalobl&aacute;stica</span>). Se ha se&ntilde;alado m&aacute;s recientemente que el d&eacute;ficit de <span class=SpellE>folato</span> (debido principalmente a un aporte insuficiente en la dieta), que posea un nivel no capaz de producir anemia, se ha asociado con aumento del amino&aacute;cido <span class=SpellE>homociste&iacute;na</span>. El aumento de este amino&aacute;cido es un factor de riesgo para enfermedad <span class=SpellE>cerebrovascular</span> (aterosclerosis), y puede tener un efecto t&oacute;xico directo sobre la neurona del sistema nervioso central. El aumento de <span class=SpellE>homociste&iacute;na</span> ha sido relacionado con da&ntilde;o <span class=SpellE>ateroscler&oacute;tico</span>, afectaci&oacute;n cognitiva y enfermedad de <span class=SpellE>Alzheimer</span>. </span></p>        <p><span style='font-size:10.0pt;font-family:Verdana'>Existe inter&eacute;s en      conocer si el suplemento de &aacute;cido f&oacute;lico pudiera mejorar la      funci&oacute;n cognitiva en el envejecimiento. El suministro de &aacute;cido      f&oacute;lico en personas con deficiencia no diagnosticada de vitamina B12      puede llevar a da&ntilde;o neurol&oacute;gico. La deficiencia de vitamina      B12 produce una anemia <span class=SpellE>megalobl&aacute;stica</span> similar      a la deficiencia de &aacute;cido f&oacute;lico, pero causa da&ntilde;o irreversible      al sistema nervioso central y perif&eacute;rico El &aacute;cido f&oacute;lico      previene la anemia por d&eacute;ficit de vitamina B12 y retrasa su diagn&oacute;stico,      pero no previene la progresi&oacute;n del da&ntilde;o neurol&oacute;gico;      por esta raz&oacute;n se ha asociado la vitamina B12 con el suplemento de      &aacute;cido f&oacute;lico, que ha tenido efectos beneficiosos en reducir      la <span class=SpellE>homociste&iacute;na</span>, pero los efectos en la esfera      cognitiva en el envejecimiento y sobre el da&ntilde;o vascular, no han tenido      resultados concluyentes,<sup>20,21 </sup>al igual con la <span class=SpellE>suplementaci&oacute;n</span> con vitamina B6.<sup>22</sup> </span></p>       ]]></body>
<body><![CDATA[<p>&nbsp;</p>      <p><b><span style='font-family:Verdana;text-transform:uppercase'>Diabetes mellitus</span></b><span style='font-family:Verdana;text-transform:uppercase'> </span><span style='text-transform:uppercase'><o:p></o:p></span></p>      <p><span style='font-size:10.0pt;font-family:Verdana'>La diabetes <span class=SpellE>mellitus</span> tipo 2 (DM tipo 2), es un problema de salud mundial; sus efectos sobre la funci&oacute;n cognitiva tienen implicaciones en la salud p&uacute;blica. M&uacute;ltiples mecanismos (<span class=SpellE>hiper</span> e hipoglucemia, <span class=SpellE>insulinorresistencia</span>, estr&eacute;s <span class=SpellE>oxidativo</span>, productos finales de <span class=SpellE>glucosilaci&oacute;n</span> <span class=SpellE>enzim&aacute;tica</span>, <span class=SpellE>citoquinas</span> inflamatorias y enfermedad micro y <span class=SpellE>macrovascular</span>), est&aacute;n implicados en esta afectaci&oacute;n cognitiva, con riesgo incluso de llevar a la enfermedad de <span class=SpellE>Alzheimer</span>.<sup>23</sup> Los estudios de poblaci&oacute;n han demostrado que <st1:PersonName ProductID="la DM" w:st="on">la DM</st1:PersonName> tipo 2, tiene un incremento de padecer de afectaci&oacute;n de funci&oacute;n cognitiva.<sup>24</sup> En esta enfermedad, se han descrito d&eacute;ficit cognitivos y atrofia del hipocampo (centro importante en la memoria), rasgos similares al observado en el envejecimiento. Este tipo de diabetes se acompa&ntilde;a de obesidad, <span class=SpellE>dislipemia</span>, hipertensi&oacute;n e inflamaci&oacute;n sist&eacute;mica que causan da&ntilde;o vascular al cerebro, encontr&aacute;ndose adem&aacute;s del volumen reducido del hipocampo una reducci&oacute;n del &aacute;rea <span class=SpellE>prefrontal</span>.<sup>25</sup> </span></p>        <p><span style='font-size:10.0pt;font-family:Verdana'>El descubrimiento de receptores      a la insulina en el sistema nervioso central, la detecci&oacute;n de insulina      en el l&iacute;quido cefalorraqu&iacute;deo, despu&eacute;s de la administraci&oacute;n      de insulina perif&eacute;rica, ha identificado al cerebro como punto importante      a la acci&oacute;n de la insulina.<sup>26</sup> En <st1:PersonName ProductID="la DM" w:st="on">la DM</st1:PersonName> tipo 2 asociada con la obesidad      (la llamada <span class=SpellE>diabesidad</span>), ambos componentes del s&iacute;ndrome      metab&oacute;lico, presentan resistencia a la insulina, por lo que el p&aacute;ncreas      debe producir mayor cantidad de esta hormona para vencer esta resistencia.<sup>27</sup>      Se ha observado que la insulina influye en la memoria (mejor&iacute;a). El      cerebro y en especial el hipocampo, es una regi&oacute;n vulnerable a la resistencia      a la insulina.<sup>28</sup> &iquest;Pudiera la resistencia a la acci&oacute;n      de la insulina, tener un papel en la afectaci&oacute;n de la funci&oacute;n      cognitiva de estos pacientes, adem&aacute;s del da&ntilde;o vascular propio      de la enfermedad? Investigaciones han se&ntilde;alado, al relacionar el engrosamiento      de la &iacute;ntima-media de la car&oacute;tida com&uacute;n, con diferentes      factores de riesgo de aterosclerosis en pacientes con DM tipo 2, que existe      relaci&oacute;n entre el engrosamiento de la &iacute;ntima-media y la duraci&oacute;n      de la diabetes, obesidad, y HDL colesterol bajo.<sup>29</sup> Otros estudios,      en ni&ntilde;os con DM tipo 1, han se&ntilde;alado relaci&oacute;n entre este      engrosamiento y la hemoglobina <span class=SpellE>glicosilada</span> (<span class=SpellE>HbAc1</span>)      y <st1:PersonName ProductID="la TA" w:st="on">la TA</st1:PersonName> sist&oacute;lica.<sup>30</sup>      Al realizar <span class=SpellE><i>test</i></span> cognitivos a poblaciones en la comunidad, en adultos      de edad mediana, la diabetes <span class=SpellE>mellitus</span>, los niveles      elevados de <span class=SpellE>fibrin&oacute;geno</span>, el tabaquismo y      el engrosamiento de la &iacute;ntima-media, se relacionaron con menor funci&oacute;n      cognitiva.<sup>31</sup> </span></p>       <p>&nbsp;</p>      <p><b><span style='font-family:Verdana;text-transform:uppercase'>S&iacute;ndrome metab&oacute;lico</span></b><span style='font-family:Verdana;text-transform: uppercase'> </span><span style='text-transform:uppercase'><o:p></o:p></span></p>        <p><span style='font-size:10.0pt;font-family:Verdana'>El s&iacute;ndrome metab&oacute;lico      se conoce como la combinaci&oacute;n de diversos trastornos complejos, entre      ellos la obesidad, diabetes <span class=SpellE>mellitus</span> tipo 2, hipertensi&oacute;n      arterial, <span class=SpellE>dislipemia</span>, <span class=SpellE>insulinorresistencia</span> y otros. Se acompa&ntilde;a de un aumento      del estr&eacute;s <span class=SpellE>oxidativo</span> y constituye un factor      de riesgo de da&ntilde;o vascular.<sup>32</sup> Estudios han demostrado que      existe asociaci&oacute;n significativa entre s&iacute;ndrome metab&oacute;lico      y la afectaci&oacute;n cognitiva.<sup>33</sup> La <span class=SpellE>adiponectina</span> es una prote&iacute;na secretada por el tejido      adiposo que puede regular la sensibilidad a la insulina y guarda relaci&oacute;n      con la <span class=SpellE>insulinorresistencia</span> de la obesidad, en la      cual la <span class=SpellE>adiponectina</span> est&aacute; disminuida. Recientes      estudios demuestran que la <span class=SpellE>adiponectina</span> tiene propiedades      <span class=SpellE>antiaterog&eacute;nicas</span>.<sup>34</sup> Modificaciones      en el estilo de vida, as&iacute; como el control medicamentoso de la hipertensi&oacute;n,      <span class=SpellE>insulinorresistencia</span> y la diabetes <span class=SpellE>mellitus</span>,      pueden incrementar los niveles de <span class=SpellE>adiponectina</span>, con mejor&iacute;a de la disfunci&oacute;n endotelial.      </span></p>       <p>&nbsp;</p>      <p><b><span style='font-family:Verdana;text-transform:uppercase'>Dislipemia</span></b><span style='font-family:Verdana;text-transform:uppercase'> </span><span style='text-transform:uppercase'><o:p></o:p></span></p>        <p><span style='font-size:10.0pt;font-family:Verdana'>Se ha se&ntilde;alado que      la hipercolesterolemia incrementa el riesgo de d&eacute;ficit cognitivo y      pudiera estar relacionada tambi&eacute;n con la patog&eacute;nesis de la enfermedad      de <span class=SpellE>Alzheimer</span>.<sup>35</sup> Algunos estudios sugieren      que las <span class=SpellE>estatinas</span> pueden tener efecto protector      de la cognici&oacute;n, pero estos resultados son contradictorios. En estudios      con adultos mayores, el incremento de lipoprote&iacute;nas <span class=SpellE>aterog&eacute;nicas</span> estaba asociado con afectaci&oacute;n      de la cognici&oacute;n.<sup>36,37</sup> Los <span class=SpellE>micro&eacute;mbolos</span>      de cristales de colesterol (componente de la placa de <span class=SpellE>ateroscler&oacute;tica</span>      humana), ocurren frecuentemente en pacientes con aterosclerosis <span class=SpellE>asintom&aacute;tica</span> de la car&oacute;tida, los cuales en estudios      experimentales, inician una respuesta inflamatoria, causando disfunci&oacute;n      de &oacute;rganos y en el cerebro producen respuesta inflamatoria con persistente      activaci&oacute;n de <span class=SpellE>microgl&iacute;a</span> y de <span class=SpellE>astrocitos</span>      con afectaci&oacute;n de la funci&oacute;n cognitiva.<sup>38</sup> En animales      de experimentaci&oacute;n, el aumento de peso por uso de dieta alta en grasa,      afecta la plasticidad del hipocampo produciendo deficiencias del aprendizaje.<sup>39</sup>      Los niveles elevados de LDL oxidada y triglic&eacute;ridos (TG) constituyen      un factor de riesgo de da&ntilde;o vascular. Se ha se&ntilde;alado que el      aumento de los TG, produce inhibici&oacute;n en los receptores del neurotransmisor      cerebral <span class=SpellE>glutamato</span>,<b> </b>con afectaci&oacute;n de procesos cognitivos.<sup>40</sup>      Tambi&eacute;n los marcadores sist&eacute;micos de inflamaci&oacute;n y de      la homeostasis est&aacute;n relacionados con d&eacute;ficit cognitivo en las      personas de la tercera edad, independientemente de las mayores <span class=SpellE>comorbilidades</span>      vasculares propias de la edad.<sup>41<span class=GramE>,42</span></sup> </span><span style='font-size:10.0pt;font-family:Verdana'> </span></p>      ]]></body>
<body><![CDATA[<p><span style='font-size:10.0pt;font-family:Verdana'>Podemos concluir que la      prevenci&oacute;n de los trastornos cognitivos, representa uno de los mayores      retos de la salud p&uacute;blica en los pr&oacute;ximos a&ntilde;os, en el      cual el manejo de los factores de riesgo de da&ntilde;o <span class=SpellE>ateroscler&oacute;tico</span>,      tiene un papel fundamental. </span></p>      <p>&nbsp; </p>      <p><b><span style='font-family:Verdana'>RFERENCIAS BIBLIOGR&Aacute;FICAS</span></b> </p>      <!-- ref --><p><span style='font-size:10.0pt;font-family:Verdana'>1.<b> </b>Fern&aacute;ndez-<span class=SpellE>Britto</span> JE, Castillo JA. El Centro de Investigaciones y Referencias de Aterosclerosis de <st1:PersonName ProductID="La Habana" w:st="on">La  Habana</st1:PersonName> (CIRAH) (Editorial). </span><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language:EN-GB'>Rev <span class=SpellE>Cubana</span> Invest <span class=SpellE>Biom&eacute;d</span>. 1998<span class=GramE>;17</span>(2):101-11.     </span><span lang=EN-GB style='mso-ansi-language: EN-GB'><o:p></o:p></span></p>        <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>2. <span class=SpellE>Fern&aacute;ndez-Britto</span> JE, Wong R, Contreras      D, <span class=SpellE>Nordet</span> P, <span class=SpellE>Sternby</span> NH. <span class=SpellE><span class=GramE>Pathomorphometrical</span></span><span class=GramE> characteristics of atherosclerosis in youth.</span> <span class=GramE>A multinational investigation of WHO/International Society Federation      Cardiology (1986-1996), using <span class=SpellE>atherometric</span> system.</span>      </span><span class=SpellE><span style='font-size:10.0pt; font-family:Verdana'>Nutr</span></span><span style='font-size:10.0pt; font-family:Verdana'> <span class=SpellE>Metab</span> <span class=SpellE>Cardiovasc</span>      <span class=SpellE>Dis</span>. 1999<span class=GramE>;9</span>(5):210-9.     </span></p>      <!-- ref --><p><span style='font-size:10.0pt;font-family:Verdana'>3. &#8212;&#8212;&#8212;&#8212;. Aterosclerosis de la juventud (1): <span class=SpellE>patomorfolog&iacute;a</span> y <span class=SpellE>morfometr&iacute;a</span> seg&uacute;n edad y sexo utilizando el sistema <span class=SpellE>aterom&eacute;trico</span>. </span><span class=SpellE><span lang=EN-GB style='font-size:10.0pt;font-family: Verdana;mso-ansi-language:EN-GB'>Estudio</span></span><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language:EN-GB'> PBDAY (<span class=SpellE>Pathobiological</span> determinants of atherosclerosis in youth). <span class=SpellE><span class=GramE>Estudio</span></span><span class=GramE> <span class=SpellE>multinacional</span> de <st1:PersonName ProductID="la OMS" w:st="on">la  OMS</st1:PersonName>/FISC (1986-1996).</span> <span class=GramE>Base <span class=SpellE>Cient&iacute;fica</span>.</span> <span class=SpellE>Clin</span> Invest Arteriosclerosis. 1998<span class=GramE>;10</span>(5);229-38.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>4. <span class=SpellE>Sternby</span> NH, <span class=SpellE>Fern&aacute;ndez-Britto</span> JE, <span class=SpellE>Nordet</span> P. <span class=SpellE>Pathobiological</span> determinants of atherosclerosis in youth (PBDAY Study), 1986-96. Bull World Health Organ. 1999<span class=GramE>;77</span>(3):250-7.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>5. <span class=SpellE>Rafnsson</span> SB, <span class=SpellE>Deary</span> IJ, <span class=SpellE>Fowkes</span> FG. <span class=GramE>Peripheral arterial disease and cognitive function.</span> <span class=SpellE>Vasc</span> Med. 2009<span class=GramE>;14</span>(1):51-61.     </span><span lang=EN-GB style='mso-ansi-language: EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>6. <span class=SpellE>Waldstein</span> SR, Tankard CF, Maier KJ, Pelletier JR, Snow J, Gardner AW, et al. Peripheral arterial disease and cognitive function <span class=SpellE>Psychosom</span> Med. 2003;65(5):757-63.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>7. <span class=SpellE>Gatto</span> NM, Henderson VW, St John JA, <span class=SpellE>McCleary</span> C, <span class=SpellE>Detrano</span> R, <span class=SpellE>Hodis</span> HN, et al. <span class=SpellE>Subclinical</span> atherosclerosis is weakly associated with lower cognitive function in healthy <span class=SpellE>hyperhomocysteinemic</span> adults without clinical cardiovascular disease. <span class=SpellE>Int</span> J <span class=SpellE>Geriatr</span> Psychiatry. 2009<span class=GramE>;24</span>(4):390-9.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>8. Romero JR, <span class=SpellE>Beiser</span> A, <span class=SpellE>Seshadri</span> S, Benjamin EJ, <span class=SpellE>Polak</span> JF, <span class=SpellE>Vasan</span> RS, et al. Carotid artery atherosclerosis, MRI indices of brain ischemia, aging, and cognitive impairment: the <st1:place w:st="on"><st1:City w:st="on">Framingham</st1:City></st1:place> study. <span class=GramE>Stroke.</span> 2009<span class=GramE>;40</span>(5)1590-6.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>9. <span class=SpellE>Verdelho</span> A, <span class=SpellE>Madureira</span> S, Ferro JM, <span class=SpellE>Basile</span> AM, <span class=SpellE>Chabriat</span> H, <span class=SpellE>Erkinjuntti</span> T, et al. Differential impact of cerebral white matter changes, diabetes, hypertension and stroke on cognitive performance among non-disabled elderly. The LADIS study. <span class=GramE>J <span class=SpellE>Neurol</span> <span class=SpellE>Neurosurg</span> <span class=SpellE>Psychiatr</span>.</span> 2007<span class=GramE>;78</span>(12):1325-30.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>10. Van <span class=SpellE>Dijk</span> EJ, <st1:place w:st="on"><st1:City  w:st="on"><span class=SpellE>Prins</span></st1:City> <st1:State w:st="on">ND</st1:State></st1:place>, <span class=SpellE>Vrooman</span> HA, <span class=SpellE>Hofman</span> A, <span class=SpellE>Koudstaal</span> PJ, <span class=SpellE>Breteler</span> MM. Progression of cerebral small vessel disease in relation to risk factors and cognitive consequences: Rotterdam Scan study Stroke. 2008<span class=GramE>;39</span>(10):2712-9.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>11. <span class=SpellE>Obisesan</span> TO, <span class=SpellE>Obisesan</span> OA, Martins S, <span class=SpellE>Alamgir</span> L, Bond V, Maxwell C, et al. High blood pressure, hypertension, and high pulse pressure are associated with poorer cognitive function in persons aged 60 and older: the Third National Health and Nutrition Examination Survey. J Am <span class=SpellE>Geriatr</span> Soc. 2008<span class=GramE>;56</span>(3):501-9.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>12. <span class=SpellE>Suhr</span> JA, Stewart JC, France CR. <span class=GramE>The relationship between blood pressure and cognitive performance in the Third National Health and Nutrition Examination Survey (NHANES III).</span> <span class=SpellE>Psychosom</span> Med. 2004<span class=GramE>;66</span>(3):291-7.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>13. Gupta R, <span class=SpellE>Solanki</span> RK, <span class=SpellE>Midha</span> P, <span class=SpellE>Dubey</span> V, <span class=SpellE>Pathak</span> V. 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<body><![CDATA[<!-- ref --><p><span style='font-size:10.0pt;font-family:Verdana'>40. <span class=SpellE>Farr</span> SA, <span class=SpellE>Yamada</span> KA, <span class=SpellE>Butterfield</span> DA, <span class=SpellE>Abdul</span> HM, <span class=SpellE>Xu</span> L, <span class=SpellE>Miller</span> NE, et al. </span><span lang=EN-GB style='font-size: 10.0pt;font-family:Verdana;mso-ansi-language:EN-GB'>Obesity and <span class=SpellE>hypertriglyceridemia</span> produce cognitive impairment. <span class=GramE>Endocrinology.</span> 2008<span class=GramE>;149</span>(5):2628-36.     </span><span lang=EN-GB style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>      <!-- ref --><p><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language: EN-GB'>41. <span class=SpellE>Rafnsson</span> SB, <span class=SpellE>Deary</span> IJ, Smith FB, Whiteman MC, <span class=SpellE>Rumley</span> A, Lowe GD, et al. Cognitive decline and markers of inflammation and <span class=SpellE>hemostasis</span>: the Edinburgh Artery Study. </span><span style='font-size:10.0pt;font-family: Verdana'>J <span class=SpellE>Am</span> <span class=SpellE>Geriatr</span> <span class=SpellE>Soc</span>. 2007<span class=GramE>;55</span>(5):700-7.     </span></p>      <!-- ref --><p><span style='font-size:10.0pt;font-family:Verdana'>42. <span class=SpellE>Mangiafico</span> RA, <span class=SpellE>Sarnataro</span> F, <span class=SpellE>Mangiafico</span> M, <span class=SpellE>Fiore</span> CE. </span><span lang=EN-GB style='font-size:10.0pt;font-family:Verdana;mso-ansi-language:EN-GB'>Impaired cognitive performance in asymptomatic peripheral arterial disease: relation to C-reactive protein and D-<span class=SpellE>dimer</span> levels. </span><span class=SpellE><span style='font-size:10.0pt;font-family:Verdana'>Age</span></span><span style='font-size:10.0pt;font-family:Verdana'> <span class=SpellE>Ageing</span>. 2006<span class=GramE>;35</span>(1):60-5.     </span></p>      <p>&nbsp; </p>      <p>&nbsp; </p>      <p><span style='font-size:10.0pt;font-family:Verdana'>Recibido: 24 de febrero del 2012.    <br> Aprobado: 15 de marzo del 2012. </span></p>      ]]></body>
<body><![CDATA[<p>&nbsp; </p>      <p>&nbsp; </p>      <p><span class=SpellE><span style='font-size:10.0pt;font-family:Verdana'>Dr.Cs</span></span><span style='font-size:10.0pt;font-family:Verdana'>. <span class=SpellE><i>Regino</i></span><i> <span class=SpellE>Pi&ntilde;eiro</span> Lamas</i>.<b> </b>Centro de Investigaciones y Referencias de Aterosclerosis. <st1:PersonName ProductID="La Habana" w:st="on">La Habana</st1:PersonName>, Cuba. Correo electr&oacute;nico:<a href="mailto:rpi%F1eiro@infomed.sld.cu"> rpi&ntilde;eiro@infomed.sld.cu </a></span></p>  </div>       ]]></body><back>
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