<?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>0138-6557</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina Militar]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. cuban. med. mil.]]></abbrev-journal-title>
<issn>0138-6557</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0138-65572023000200017</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Effects of hyperbaric pressure on the oxidative stress status in healthy subjects]]></article-title>
<article-title xml:lang="es"><![CDATA[Efectos de la presión hiperbárica en el estrés oxidativo en sujetos saludables]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huu Nguyen]]></surname>
<given-names><![CDATA[Ben]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Van Phan]]></surname>
<given-names><![CDATA[Manh]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Duy Bui]]></surname>
<given-names><![CDATA[Hoan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Minh Nguyen]]></surname>
<given-names><![CDATA[Phuong]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Vietnam Military Medical University Department of Military Occupational Medicine ]]></institution>
<addr-line><![CDATA[ Hanoi]]></addr-line>
<country>Vietnam</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>52</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0138-65572023000200017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0138-65572023000200017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0138-65572023000200017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: In the hyperbaric pressure environment the partial pressure of each gas component increases, which increases oxygen partial pressure. This causes the generation of free radicals and oxidative stress.  Objective:  To determine the effects of hyperbaric pressure on the oxidative stress status in healthy subjects.  Methods:  29 healthy men performed standardized hyperbaric chamber dive to a depth of 30 meters of water (msw) for 30 minutes. Blood samples were collected before compression, immediately after decompression and 1 hour after decompression. The levels of Malondialdehyde, Catalase and Superoxide Dismutase were measured in blood samples.  Results:  Malondialdehyde activity increased immediately after decompression and recovered at 1 hour after decompression. Superoxide Dismutase enzyme activity decreased immediately after decompression as well as 1 hour after decompression. Catalase enzyme activity increased immediately after decompression, which was significant at 1 hour after decompression.  Conclusion: Changes in the biological markers Malondialdehyde, Catalase and Superoxide Dismutase suggest the appearance of oxidative stress under the influence of a hyperbaric pressure environment.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  En la condición de presión hiperbárica, la presión parcial de los componentes del aire se encuentra aumentada, incluida la del oxígeno. Esto se considera la causa de formación de radicales libres y el estado de estrés oxidativo.  Objetivo:  Determinar los efectos de la presión hiperbárica sobre estado del estrés oxidativo en individuos sanos.  Métodos:  29 hombres sanos realizaron buceo estandarizado en cámara hiperbárica, a una profundidad de 30 metros de agua, durante un tiempo total de 30 minutos. Se recogieron muestras de sangre antes de la compresión, inmediatamente después de la descompresión y una hora después. Se midieron los niveles de malondialdehído, catalasa y superóxido dismutasa en muestras de sangre.  Resultados:  La acción del malondialdehído se incrementó inmediatamente después del buceo y se recuperó en 1 hora. La acción de enzima superóxido dismutasa se encontró disminuida al término y 1 hora después, mientras la enzima catalasa se demostró lo contrario y aumentó significativamente en la primera hora.  Conclusión:  El cambio de los marcadores biológicos malondialdehído, catalasa y superóxido dismutasa sugiere estado de estrés oxidativo bajo la influencia de presión hiperbárica.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[biological biomarker]]></kwd>
<kwd lng="en"><![CDATA[catalase]]></kwd>
<kwd lng="en"><![CDATA[decompression]]></kwd>
<kwd lng="en"><![CDATA[free radicals]]></kwd>
<kwd lng="en"><![CDATA[healthy volunteers]]></kwd>
<kwd lng="en"><![CDATA[malondialdehyde]]></kwd>
<kwd lng="en"><![CDATA[oxidative stress]]></kwd>
<kwd lng="en"><![CDATA[superoxide dismutase]]></kwd>
<kwd lng="es"><![CDATA[biomarcadores]]></kwd>
<kwd lng="es"><![CDATA[catalasa]]></kwd>
<kwd lng="es"><![CDATA[descompresión]]></kwd>
<kwd lng="es"><![CDATA[radicales libres]]></kwd>
<kwd lng="es"><![CDATA[voluntarios saludables]]></kwd>
<kwd lng="es"><![CDATA[malondialdehído]]></kwd>
<kwd lng="es"><![CDATA[estrés oxidativo]]></kwd>
<kwd lng="es"><![CDATA[superóxido dismutasa]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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