<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662022000100109</article-id>
<article-id pub-id-type="doi">10.15174/au.2022.3221</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de subpoblaciones linfocitarias en individuos seropositivos a Helicobacter pylori]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of lymphocyte subpopulations in seropositive individuals to Helicobacter pylori]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palacios Martínez]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nájera Medina]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González López]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Navarro]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solís Chávez]]></surname>
<given-names><![CDATA[P.C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Cárdenas]]></surname>
<given-names><![CDATA[E. M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento de Producción Agrícola y Animal ]]></institution>
<addr-line><![CDATA[Xochimilco ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento de Atención a la Salud ]]></institution>
<addr-line><![CDATA[Xochimilco ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de la Ciudad de México Departamento de Genética ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>32</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662022000100109&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662022000100109&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662022000100109&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las infecciones por Helicobacter pylori (H. pylori) son consideradas un problema de salud pública debido a su alto índice de morbilidad en la población mexicana. Por ello, este trabajo está enfocado a la detección de anti- IgA-H. pylori por medio de la prueba de ELISA y la evaluación de subpoblaciones linfocitarias por citometría de flujo en sangre periférica de población adulta de una zona rural del estado de Morelos. Se trabajó con 79 participantes adultos (edad de 42 ± 13.7 años), de los cuales 57% (n = 45) fueron seropositivos y 43% (n = 24) seronegativos. No se encontraron diferencias estadísticamente significativas en leucocitos, ni en células efectoras, solo una pequeña tendencia a aumentar las células de memoria CD4+ y CD8+ en individuos seropositivos a H. pylori, así como una disminución en células CD8+ dobles positivos (CD8+CD45RA+CD45RO+, p &lt; 0.05). Probablemente no existen diferencias relevantes debido a la capacidad de la bacteria para evadir la respuesta inmunológica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Helicobacter pylori (H. pylori) infections are considered a public health problem due to its high morbidity rate in the Mexican population. Therefore, this work is focused on the detection of anti-IgA-H. pylori by ELISA blood test and the evaluation of lymphocyte subpopulations by flow cytometry in peripheral blood of adult population from a rural area of the state of Morelos. We worked with 79 adult participants (aged 42 ± 13.7 years), of which 57% (n = 45) were seropositive and 43% (n = 24) seronegative. No statistically significant differences were found in leukocytes, or effector cells, only a small tendency to increase both CD4+ and CD8+ memory cells, in H. pylori seropositive individuals, and a decrease in double positive CD8+ cells (CD8+CD45RA+CD45RO+, p &lt; 0.05). There are probably no relevant differences due to the capacity of the bacterium to evade the immune response.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Linfocitos]]></kwd>
<kwd lng="es"><![CDATA[células de memoria]]></kwd>
<kwd lng="es"><![CDATA[células efectoras]]></kwd>
<kwd lng="es"><![CDATA[Helicobacter pylori]]></kwd>
<kwd lng="en"><![CDATA[Lymphocytes]]></kwd>
<kwd lng="en"><![CDATA[memory cells]]></kwd>
<kwd lng="en"><![CDATA[effector cells]]></kwd>
<kwd lng="en"><![CDATA[Helicobacter pylori]]></kwd>
</kwd-group>
</article-meta>
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