<?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>2221-2450</journal-id>
<journal-title><![CDATA[Revista CENIC Ciencias Biológicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. CENIC Cienc. Biol]]></abbrev-journal-title>
<issn>2221-2450</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Investigaciones Científicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2221-24502020000200100</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Saponin contents and antiproliferative in vitro effects on PC3 human prostate cancer saponaria L. extracts.cell line of Sapindus]]></article-title>
<article-title xml:lang="es"><![CDATA[Contenido de saponinas y efectos anti proliferativos in vitro sobre la línea celular de cáncer de próstata humana PC 3 de extractos de Sapindus saponaria L.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tamargo Santos]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mena Valdés]]></surname>
<given-names><![CDATA[Licet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Plaza Vélez]]></surname>
<given-names><![CDATA[Luis Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez Rodríguez]]></surname>
<given-names><![CDATA[Yolanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliva Argüelles]]></surname>
<given-names><![CDATA[Brizaida M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sierra González]]></surname>
<given-names><![CDATA[Victoriano Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Latin American School of Medical Sciences  ]]></institution>
<addr-line><![CDATA[ Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Center for Research and Advanced Studies of the National Polytechnic Institute  ]]></institution>
<addr-line><![CDATA[ Mexico City]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of Guayaquil Faculty of Medical Sciences ]]></institution>
<addr-line><![CDATA[ Guayaquil]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Center for Genetic Engineering and Biotechnology  ]]></institution>
<addr-line><![CDATA[ Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,BioCubaFarma Biotechnology &amp; Pharmaceutical Industries Group ]]></institution>
<addr-line><![CDATA[ Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<volume>51</volume>
<numero>2</numero>
<fpage>100</fpage>
<lpage>108</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2221-24502020000200100&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2221-24502020000200100&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2221-24502020000200100&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Plants are valuable sources of pharmacologically active substances against many diseases, including cancer. The extracts of Sapindus saponaria L. contain saponins which concentration can be measured and correlated with their pharmacological activity. Numerous studies have been published on the in vitro cytotoxic action of extracts of S. saponaria L. against cell lines of different types of tumors. The saponins of other plants are used as components of adjuvants for vaccines. Our objectives were to evaluate different parts of the plant S. saponaria L., as a source of saponins by measuring the hemolytic activity of aqueous extracts of fruits, seeds and stems and to explore their in vitro antiproliferative potential in the cell line of human prostate cancer PC3. The quantitative determination of saponins in the extracts was carried out using the modified Pape W. technique that measures the hemolytic potential in red blood cells. The concentration of hemoglobin released by lysis of erythrocytes was measured spectrophotometrically. The effect of the extracts, rich in saponins, on the viability of the human tumor line of prostate cancer PC3, was determined by the High Cell Density Test. The concentration of saponins in terms of &#956;g/ml of extract was: 757.0 ± 1.34 in the fruits, reaching the highest values; 173.0 ± 1.11 in seeds and 30.5 ± 0.13 in stems. The extracts of the three sources studied had a marked cytotoxic-antiproliferative effect against the human tumor line PC3. The inhibition of cell proliferation was similar to that shown by the positive control, paclitaxel. Very low concentrations of the extract (0.01 &#956;g/mL) exerted antiproliferative action. It is possible to conclude that fruits, seeds and stems of Sapindus saponaria L. are good sources of saponins and that their extracts can stop the proliferation of the tumor cell line PC3, even at low levels of concentration and hemolytic potential. Analysing together that saponins themselves are important substances as vaccine adjuvants and that they show an antitumor potential, the authors believe that the plant Sapindus saponaria L. has a potential antitumor effect to take into account .]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Las plantas son fuentes valiosas de sustancias farmacológicamente activas contra muchas enfermedades, incluido el cáncer. Los extractos de Sapindus saponaria L. contienen saponinas cuya concentración se puede medir y correlacionar con su actividad farmacológica. Se han publicado numerosos estudios sobre la acción citotóxica in vitro de extractos de S. saponaria L. contra líneas celulares de diferentes tipos de tumores. Además, las saponinas de otras plantas se usan como adyuvantes para vacunas. Los objetivos de este trabajo fueron evaluar diferentes partes de la planta de S. saponaria L., como fuente de saponinas mediante la medición de la actividad hemolítica de extractos acuosos de frutas, semillas y tallos, y explorar su potencial antiproliferativo en la línea del cáncer de próstata humano PC3 in vitro. La determinación cuantitativa de las saponinas en los extractos se llevó a cabo utilizando la técnica Pape W. modificada que mide el potencial hemolítico en los glóbulos rojos. La concentración de hemoglobina liberada por la lisis de eritrocitos se midió espectrofotométricamente. El efecto de los extractos, ricos en saponinas, sobre la viabilidad de la línea tumoral humana de cáncer de próstata PC3, se determinó mediante la prueba de densidad celular alta. La concentración de saponinas en términos de &#956;g/ml de extracto fue: 757,0 ± 1,34 en los frutos, donde alcanzó los mayores valores; 173,0 ± 1,11 en las semillas y 30,5 ± 0,13 en los tallos. Los extractos de las tres fuentes estudiadas tuvieron un marcado efecto citotóxico-antiproliferativo, contra la línea tumoral humana PC3. La inhibición de la proliferación celular fue similar a la mostrada por el control positivo, paclitaxel. Muy bajas concentraciones del extracto (0.01 &#956;g/mL) ejercieron acción antiproliferativa. Se puede concluir que los frutos, semillas y tallos de Sapindus saponaria L. constituyen fuentes buenas de saponinas y que sus extractos pueden detener la proliferación de la línea celular tumoral PC3, incluso a bajos niveles de concentración y potencial hemolítico. Analizando de conjunto que las saponinas en sí mismas son sustancias importantes como adyuvantes de vacunas, con un potencial como antitumorales, los autores consideran que la planta Sapindus saponaria L. tiene un efecto antitumoral potencial que debe tenerse en cuenta.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Sapindus saponaria L.]]></kwd>
<kwd lng="en"><![CDATA[prostate cancer]]></kwd>
<kwd lng="en"><![CDATA[PC3 cell line]]></kwd>
<kwd lng="en"><![CDATA[saponins]]></kwd>
<kwd lng="en"><![CDATA[erythrocyte hemolysis]]></kwd>
<kwd lng="es"><![CDATA[Sapindus saponaria L]]></kwd>
<kwd lng="es"><![CDATA[cáncer de próstata]]></kwd>
<kwd lng="es"><![CDATA[línea celular PC 3]]></kwd>
<kwd lng="es"><![CDATA[saponinas]]></kwd>
<kwd lng="es"><![CDATA[hemólisis eritrocítica]]></kwd>
</kwd-group>
</article-meta>
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