<?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>2304-0106</journal-id>
<journal-title><![CDATA[Anales de la Academia de Ciencias de Cuba]]></journal-title>
<abbrev-journal-title><![CDATA[Anales de la ACC]]></abbrev-journal-title>
<issn>2304-0106</issn>
<publisher>
<publisher-name><![CDATA[Academia de Ciencias de Cuba]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2304-01062021000100027</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Marcadores de inmunosenescencia y su relación con el cáncer de pulmón]]></article-title>
<article-title xml:lang="en"><![CDATA[Immunosenescence markers: relationships with diagnosed with lung cancer]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saavedra Hernández]]></surname>
<given-names><![CDATA[Danay]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Verdecia]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Morera]]></surname>
<given-names><![CDATA[Amnely]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lorenzo-Luaces Álvarez]]></surname>
<given-names><![CDATA[Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lage Dávila]]></surname>
<given-names><![CDATA[Agustín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Inmunología Molecular  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2304-01062021000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2304-01062021000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2304-01062021000100027&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  Los cambios en el sistema inmune relacionados con la edad se han denominado inmunosenescencia. Objetivos: investigar el efecto de la edad y el sexo en las poblaciones de linfocitos de personas sanas y de pacientes con cáncer de pulmón para evaluar el valor predictivo de los marcadores de en relación con la eficacia clínica de la vacuna terapéutica CIMAvax-EGF, así como evaluar si la administración de un factor tímico influye en la distribución de los marcadores de inmunosenescencia y las poblaciones del sistema inmunitario.  Métodos:  Se estudiaron los marcadores de inmunosenescencia en personas &#8220;aparentemente sanas&#8221; de todas las edades y en pacientes con cáncer de pulmón de células no pequeñas (CPCNP).  Resultados:  En los sanos, los linfocitos T CD4+ y las células B disminuyeron con la edad y aumentaron las células T terminalmente diferenciadas, con diferente manifestación en los dos sexos. La intervención de ancianos con infecciones respiratorias recurrentes con el factor tímico Biomodulina T indujo la expansión de linfocitos T CD4+ vírgenes, CD4+ recientemente emigrados del timo y CD8+ de memoria con caracteres de células madre, junto a la disminución de las células T que expresan el receptor de muerte celular programada (PD1), sin modificación de la frecuencia de las células T reguladoras. La evaluación de los marcadores de inmunosenescencia en pacientes con CPCNP mostró que en los pacientes con cáncer disminuyeron los linfocitos B y el índice CD4/CD8, mientras que el empleo de quimioterapia basada en platinos incrementó los niveles de IL-6 y las células T CD28 negativas. La frecuencia de linfocitos T CD4+ por encima de 40 %, la frecuencia de células T diferenciación terminal CD8+CD28- por debajo de 24 % y la razón CD4/CD8 por encima de dos, predicen el beneficio clínico de los pacientes con cáncer de pulmón tratados con la vacuna terapéutica CIMAvax-EGF, lo que convierte a estos marcadores en potenciales predictores de la eficacia de esta vacuna. Este estudio mostró por primera vez el patrón de los marcadores de inmunosenescencia en la población cubana y sugiere que estos marcadores pueden ser modificados por la edad, el sexo, el cáncer y la quimioterapia basada en platinos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  The changes that occur in the immune system with aging are commonly termed immunosenescence. Objective: To investigate the effect of age and gender on lymphocyte populations in healthy humans and patients diagnosed with lung cancer, to evaluate immunosenescence biomarkers to predict clinical efficacy of CIMAvax-EGF cancer vaccine and to evaluate whether the administration of a thymic factor influences the distribution of immunosenescence biomarkers and populations of the immune system.  Methods:  an evaluation was made of immunosenescence markers in healthy people of all ages and in patients diagnosed with non-small cell lung cancer (NSCLC).  Results:  In the healthy volunteers, CD4+ T lymphocytes and B cells decreased with age, while terminally differentiated T cells increased. There were different patterns of immunosenescence with respect to sex. The treatment of elderly patients diagnosed with recurrent respiratory infections with the thymic factor Biomodulina T (BT) induced the expansion of naïve CD4+ T cells, CD8+ stem cell-like memory (SCM) and CD4+ recent thymic emigrants (RTE), whereas CD4+ and CD8+ T cells expressing PD1 decreased after the treatment with BT. Moreover, BT did not increase CD4+ Tregs. The absolute count of CD19+ and the CD4/CD8 ratio were significantly lower in NSCLC patients than in age-paired controls, while IL-6 serum concentration and terminally differentiated T cells increased in NSCLC patients treated with platinum-based chemotherapy. Vaccinated patients with frequency &lt;24 % of CD8 + CD28&#8722; T cells, &gt;40 % of CD4 T cells and CD4/CD8 ratio higher than two at the beginning of immunotherapy achieved a 20-month increase in median survival regarding control patients. This study showed for the first time the pattern of immunosenescence markers in the Cuban population and suggests that these markers can be modified by age, sex, cancer and platinum-based chemotherapy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[inmunosenescencia]]></kwd>
<kwd lng="es"><![CDATA[células T terminalmente diferencias]]></kwd>
<kwd lng="es"><![CDATA[Biomodulina T]]></kwd>
<kwd lng="es"><![CDATA[cáncer de pulmón de células no pequeñas]]></kwd>
<kwd lng="es"><![CDATA[CIMAvax-EGF]]></kwd>
<kwd lng="en"><![CDATA[immunosenescence]]></kwd>
<kwd lng="en"><![CDATA[T cells]]></kwd>
<kwd lng="en"><![CDATA[late-stage differentiated T cells]]></kwd>
<kwd lng="en"><![CDATA[Biomodulina T]]></kwd>
<kwd lng="en"><![CDATA[non-small cell lung cancer]]></kwd>
<kwd lng="en"><![CDATA[CIMAvax-EGF]]></kwd>
</kwd-group>
</article-meta>
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