<?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>0212-1611</journal-id>
<journal-title><![CDATA[Nutrición Hospitalaria]]></journal-title>
<abbrev-journal-title><![CDATA[Nutr. Hosp.]]></abbrev-journal-title>
<issn>0212-1611</issn>
<publisher>
<publisher-name><![CDATA[Grupo Arán]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0212-16112023000600022</article-id>
<article-id pub-id-type="doi">10.20960/nh.04410</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Vitamin D and gastric cancer &#8212; A systematic review and meta-analysis]]></article-title>
<article-title xml:lang="es"><![CDATA[Vitamina D y cáncer gástrico: revisión sistemática y metaanálisis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[Xi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Jie]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zou]]></surname>
<given-names><![CDATA[Long]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,The Third Hospital of Mianyang Sichuan Mental Health Center ]]></institution>
<addr-line><![CDATA[Mianyang ]]></addr-line>
<country>People's Republic of China</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,North Sichuan Medical College Graduate Division ]]></institution>
<addr-line><![CDATA[Nanchong ]]></addr-line>
<country>People's Republic of China</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2023</year>
</pub-date>
<volume>40</volume>
<numero>5</numero>
<fpage>1080</fpage>
<lpage>1087</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0212-16112023000600022&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0212-16112023000600022&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0212-16112023000600022&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: to explore the association between serum vitamin D level and the occurrence and pathological grade of gastric cancer.  Material and methods: search PubMed, Embase, Web of Science, Cochrane and Chinese database; all articles about the association between serum vitamin D levels and gastric cancer published before July 2021.  Results: 10 trials with 1159 cases of gastric cancer patients and 33,387 cases of regular control patients were analyzed. The serum vitamin D level of the gastric cancer group (15.56 ± 7.46 ng/ml) was lower than in the control group (17.60 ± 1.61 ng/ml), and the difference was statistically significant. The patients with gastric cancer, clinical stage III/IV (16.19 ± 8.04 ng/ml) had lower vitamin D levels than those with stage I/II (19.61 ± 9.61 ng/ml), and the patients with low differentiation of gastric cancer (17.5 ± 9.5 ng/ml) had lower levels than those with well- or moderately-differentiated cancer (18.04 ± 7.92 ng/ml). The patients with lymph node metastasis (19.41 ± 8.63 ng/ml) had lower vitamin D levels than the patients without lymph node metastasis (20.65 ± 7.96 ng/ml), and the difference was statistically significant.  Conclusion: vitamin D levels were negatively associated with gastric cancer. Vitamin D levels were significantly associated with different clinical stages, degrees of differentiation, and lymph node metastasis, suggesting that low vitamin D levels might predict poor prognosis in gastric cancer.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: investigar la asociación entre los niveles de vitamina D en suero y la carcinogénesis gástrica y su clasificación patológica.  Material y métodos: se buscaron en las bases de datos PubMed, Embase, Web of Science, Cochrane y China todos los artículos sobre la asociación entre los niveles séricos de vitamina D y el cáncer gástrico publicados antes de julio de 2021.  Resultados: se analizaron diez datos de 1159 pacientes con cáncer gástrico y 33.387 pacientes normales de control. El nivel de vitamina D en suero del grupo (15,56 ± 7,46 ng/ml) de cáncer gástrico era inferior al del grupo de control (16,19 ± 8,04 ng/ml), y la diferencia era estadísticamente significativa. En los pacientes con cáncer gástrico en estadio clínico III/IV (16,19 ± 8,04 ng/ml) era inferior al de los pacientes en estadio I/II (19,61 ± 9,61 ng/ml) y en los pacientes con cáncer de estómago poco diferenciado (17,5 ± 9,5 ng/ml) era menor que en los pacientes con cáncer bien o moderadamente diferenciado (18,04 ± 7,92 ng/ml); en los pacientes con metástasis en ganglios linfáticos (19,41 ± 8,63 ng/ml) era inferior al de los pacientes sin metástasis en ganglios linfáticos (20,65 ± 7,96 ng/ml), siendo la diferencia estadísticamente significativa.  Conclusión: los niveles de vitamina D se correlacionaron negativamente con el cáncer gástrico. Los niveles de vitamina D se asociaron significativamente a los diferentes estadios clínicos, el grado de diferenciación y la metástasis en ganglios linfáticos, lo que sugiere que los niveles bajos de vitamina D pueden ser un factor de predicción de mal pronóstico en el cáncer gástrico.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Stomach neoplasm]]></kwd>
<kwd lng="en"><![CDATA[Vitamin D]]></kwd>
<kwd lng="en"><![CDATA[Meta-analysis]]></kwd>
<kwd lng="es"><![CDATA[Tumores gástricos]]></kwd>
<kwd lng="es"><![CDATA[Vitamina D]]></kwd>
<kwd lng="es"><![CDATA[Metaanálisis]]></kwd>
</kwd-group>
</article-meta>
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