<?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>1729-519X</journal-id>
<journal-title><![CDATA[Revista Habanera de Ciencias Médicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev haban cienc méd]]></abbrev-journal-title>
<issn>1729-519X</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas de la Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1729-519X2021000300006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Relevancia del metabolismo del folato en el contexto de enfermedades neurodegenerativas]]></article-title>
<article-title xml:lang="en"><![CDATA[Relevance of folate metabolism in neurodegenerative disorders]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jorge Saínz]]></surname>
<given-names><![CDATA[Yasnay]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuello Almarales]]></surname>
<given-names><![CDATA[Dany]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Almaguer Mederos]]></surname>
<given-names><![CDATA[Luis E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Ciencias Médicas de Holguín Facultad de Ciencias Médicas &#8220;Mariana Grajales Cuello&#8221; ]]></institution>
<addr-line><![CDATA[Holguín ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Ciencias Médicas de Holguín  ]]></institution>
<addr-line><![CDATA[Holguín ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro para la Investigación y Rehabilitación de Ataxias Hereditarias  ]]></institution>
<addr-line><![CDATA[Holguín ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>20</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1729-519X2021000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1729-519X2021000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1729-519X2021000300006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  Varias enfermedades neurodegenerativas están asociadas a alteraciones en el metabolismo del folato, lo que tiene sustanciales implicaciones fisiopatológicas, clínicas y terapéuticas potenciales.  Objetivo: Reflejar la relevancia del metabolismo del folato para enfermedades neurodegenerativas, destacando su significación fisiopatológica y clínica, y sus implicaciones terapéuticas.  Material y métodos:  Se consultaron las bases de datos especializadas en busca de artículos publicados hasta marzo de 2020. Se emplearon descriptores específicos y operadores booleanos. Se empleó la estrategia de búsqueda avanzada para la selección de los artículos, teniendo en cuenta la calidad metodológica o validez de los estudios.  Desarrollo:  Fueron identificadas evidencias de asociación entre alteraciones del metabolismo del folato y enfermedades neurodegenerativas. Se han identificado variantes en genes que codifican enzimas involucradas en el metabolismo del folato, y modificaciones en patrones de metilación de ADN, asociadas al riesgo o a la gravedad clínica de las enfermedades de Alzheimer, Parkinson, Huntington, Temblor Esencial y Ataxia Espinocerebelosa tipo 2. Fueron encontradas asociaciones entre enfermedades neurodegenerativas y alteraciones en los niveles de metabolitos del folato, y la frecuencia de micronúcleos. Se han realizado varios estudios observacionales o experimentales que indican que la suplementación con ácido fólico y vitaminas B6 y B12, tiene utilidad terapéutica potencial en el contexto de enfermedades neurodegenerativas.  Conclusiones: El metabolismo del folato es de relevancia fisiopatológica, clínica y terapéutica para enfermedades neurodegenerativas. El uso de estrategias dirigidas a restaurar los niveles normales de folatos o de co-factores enzimáticos involucrados en el metabolismo del folato, o a reducir la acumulación de homocisteína, tiene potenciales aplicaciones terapéuticas en el contexto de estas enfermedades.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Several neurodegenerative disorders are associated with alterations in folate metabolism, having essential physiopathological, clinical and therapeutic implications.  Objective:  To assess the relevance of folate metabolism in neurodegenerative disorders, highlighting its physiopathological, clinical and therapeutic significance.  Material and Methods: Specialized biomedical databases were searched for studies published up to March 2020. Descriptors and Boolean operators were used. Advanced search strategy was used for the selection of articles, taking into account the methodological quality and validity of the studies.  Results: Strong evidence of the association between folate metabolism and neurodegenerative disorders were identified. Enzyme-coding genes involved in folate metabolism and epigenetic DNA modifications associated with increased risk or disease severity in Alzheimer´s, Parkinson´s, and Huntington´s diseases, Essential Tremor, and Spinocerebellar ataxia type 2 were also identified. Associations between neurodegenerative disorders and altered levels of folate metabolites and the frequency of micronuclei were found. A number of observational and experimental studies have demonstrated that the supplementation with folic acid and vitamin B6 and B12 has therapeutic potential in the context of neurodegenerative disorders.  Conclusions: Folate metabolism is of physiopathological, clinical and therapeutic relevance for neurodegenerative disorders. The use of strategies to normalize folate levels or enzyme cofactors involved in folate metabolism or to reduce homocysteine levels has potential therapeutic applications for these disorders.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ácido fólico]]></kwd>
<kwd lng="es"><![CDATA[enfermedades neurodegenerativas]]></kwd>
<kwd lng="es"><![CDATA[epigenómica]]></kwd>
<kwd lng="es"><![CDATA[inestabilidad genómica]]></kwd>
<kwd lng="es"><![CDATA[metabolismo]]></kwd>
<kwd lng="en"><![CDATA[Epigenomics]]></kwd>
<kwd lng="en"><![CDATA[folic acid]]></kwd>
<kwd lng="en"><![CDATA[genomic instability]]></kwd>
<kwd lng="en"><![CDATA[metabolism]]></kwd>
<kwd lng="en"><![CDATA[neurodegenerative disorders]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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