<?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>0872-0754</journal-id>
<journal-title><![CDATA[Nascer e Crescer]]></journal-title>
<abbrev-journal-title><![CDATA[Nascer e Crescer]]></abbrev-journal-title>
<issn>0872-0754</issn>
<publisher>
<publisher-name><![CDATA[Centro Hospitalar do Porto]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0872-07542021000200085</article-id>
<article-id pub-id-type="doi">10.25753/birthgrowthmj.v30.i2.18765</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Folic acid, vitamin B12, and psychotic symptoms among young psychiatric inpatients]]></article-title>
<article-title xml:lang="pt"><![CDATA[Ácido fólico, vitamina B12 e sintomas psicóticos no internamento psiquiátrico de crianças e jovens]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reis]]></surname>
<given-names><![CDATA[Filipa Pedro dos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Duarte]]></surname>
<given-names><![CDATA[Luísa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cartaxo]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[Vítor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Hospitalar e Universitário de Coimbra Department of Child and Adolescent Psychiatry ]]></institution>
<addr-line><![CDATA[Coimbra ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Hospitalar e Universitário de Coimbra Department of Psychiatry ]]></institution>
<addr-line><![CDATA[Coimbra ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>30</volume>
<numero>2</numero>
<fpage>85</fpage>
<lpage>91</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0872-07542021000200085&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0872-07542021000200085&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0872-07542021000200085&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract   Introduction:  Folic acid and/or vitamin B12 deficiency are known to be associated with neuropsychiatric disorders. However, the association between serum levels of these molecules and psychotic symptoms is not established. The aim of this study was to investigate the association between folic acid and vitamin B12 serum levels and the presence of psychotic symptoms among child and young adult psychiatric inpatients.  Material and Methods:  This was a retrospective cohort study of 165 patients under 25 years of age admitted due to psychiatric disorders between 2005 and 2018 and with folic acid and vitamin B12 serum levels assessed during hospitalization. Two groups of patients were defined according to presence or absence of psychotic symptoms. Rehospitalization was also assessed.  Results:  Folic acid serum levels were significantly lower (p=0.01) in children and young adults hospitalized for psychiatric disorders with psychotic symptoms compared to patients of the same age with acute psychiatric illness without psychotic symptoms. A similar non-significant trend was found for vitamin B12. Rehospitalization rates were also higher in the first group.  Conclusion:  Results from this study suggest that low folic acid serum levels are associated with psychotic symptoms regardless of the baseline diagnosis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo   Introdução:  Sabe-se que a deficiência em ácido fólico e/ou em vitamina B12 está associada a perturbações neuropsiquiátricas. Porém, a relação entre os níveis séricos destas moléculas e sintomas psicóticos não está estabelecida. O objetivo deste estudo foi investigar a relação entre os valores séricos de ácido fólico e vitamina B12 e a presença de sintomas psicóticos em crianças e jovens internados por patologia psiquiátrica.  Material e Métodos:  Foi conduzido um estudo de coorte retrospetivo incluindo 165 doentes com idade até aos 25 anos internados por patologia psiquiátrica entre 2005 e 2018 e com valores séricos de ácido fólico e vitamina B12 determinados durante o internamento. Os doentes foram divididos em dois grupos consoante presença ou ausência de sintomatologia psicótica. Foi ainda determinada a ocorrência de reinternamento.  Resultados:  Foram observados níveis séricos de ácido fólico significativamente mais baixos (p=0.01) em crianças e jovens adultos internados com patologia psiquiátrica associada a sintomatologia psicótica quando comparados com doentes da mesma faixa etária com patologia psiquiátrica aguda sem sintomas psicóticos. Uma tendência semelhante, mas não significativa, foi encontrada para a vitamina B12. Observou-se ainda uma prevalência significativamente maior de reinternamentos no primeiro grupo.  Conclusão:  Os resultados deste estudo sugerem que a diminuição do nível sérico de ácido fólico está associada a sintomatologia psicótica, independentemente da situação diagnóstica de base.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[folic acid]]></kwd>
<kwd lng="en"><![CDATA[psychiatric hospitalization]]></kwd>
<kwd lng="en"><![CDATA[psychopathology]]></kwd>
<kwd lng="en"><![CDATA[psychosis]]></kwd>
<kwd lng="en"><![CDATA[vitamin B12]]></kwd>
<kwd lng="pt"><![CDATA[ácido fólico]]></kwd>
<kwd lng="pt"><![CDATA[hospitalização psiquiátrica]]></kwd>
<kwd lng="pt"><![CDATA[psicopatologia]]></kwd>
<kwd lng="pt"><![CDATA[psicose]]></kwd>
<kwd lng="pt"><![CDATA[vitamina B12]]></kwd>
</kwd-group>
</article-meta>
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