<?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>0034-7418</journal-id>
<journal-title><![CDATA[Revista Colombiana de Ciencias Químico - Farmacéuticas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. colomb. cienc. quim. farm.]]></abbrev-journal-title>
<issn>0034-7418</issn>
<publisher>
<publisher-name><![CDATA[Departamento de Farmácia, Facultad de Ciencias, Universidade Nacional da Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-74182023000200699</article-id>
<article-id pub-id-type="doi">10.15446/rcciquifa.v52n2.103781</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Biomarcadores do estresse oxidativo em pacientes com fibromialgia antes do tratamento farmacológico]]></article-title>
<article-title xml:lang="en"><![CDATA[Biomarkers of oxidative stress in patients with fibromyalgia before pharmacological treatment]]></article-title>
<article-title xml:lang="es"><![CDATA[Biomarcadores de estrés oxidativo en pacientes con fibromialgia antes del tratamiento farmacológico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Uhdich Kleibert]]></surname>
<given-names><![CDATA[Karine Raquel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lorenzoni Nunes]]></surname>
<given-names><![CDATA[Paula]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fin Hermann]]></surname>
<given-names><![CDATA[Emelli]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Weber Fell]]></surname>
<given-names><![CDATA[Ana Paula]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Schalanski Krause]]></surname>
<given-names><![CDATA[Lenara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ahmad Musa Mheisen Husein]]></surname>
<given-names><![CDATA[Raida]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lautenchleger]]></surname>
<given-names><![CDATA[Francine]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Schultz]]></surname>
<given-names><![CDATA[Carmen Cristiane]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[Ivan Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gonzalez da Silva]]></surname>
<given-names><![CDATA[José Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Fátima Colet]]></surname>
<given-names><![CDATA[Christiane]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Regional do Noroeste do Estado do Rio Grande do Sul  ]]></institution>
<addr-line><![CDATA[Ijuí RS]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Estadual de Maringá  ]]></institution>
<addr-line><![CDATA[Maringá Paraná]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>52</volume>
<numero>2</numero>
<fpage>699</fpage>
<lpage>719</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0034-74182023000200699&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0034-74182023000200699&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0034-74182023000200699&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução a fibromialgia (FM) é uma síndrome clínica que se manifesta com dor generalizada no corpo, principalmente muscular. Além deste sintoma, a FM está associada com: fadiga, sono não reparador, distúrbios cognitivos, ansiedade, depressão e alterações intestinais. Há a hipótese que o estresse oxidativo (EO) crônico pode ser um fator de risco para danos neurais que levam à FM. Entretanto, os estudos já publicados avaliaram diferentes marcadores e apresentam resultados controversos acerca da FM o que suscita a necessidade de novas pesquisas.  Objetivos avaliar os biomarcadores de EO, catalase (CAT), superóxido dismutase (SOD), tióis não-proteicos (NP-SH) e espécies reativas ao ácido tiobarbitúrico (TBARS), de pacientes com FM antes do início do tratamento farmacológico. Descrever as características sociodemográficas, os sintomas mais prevalentes, e analisar a correlação entre análises bioquímicas e biomarcadores de EO.  Materiais e métodos trata-se de um estudo transversal, quantitativo, analítico e observacional. A amostra foi constituída por pacientes de uma clínica particular, sexo feminino, das quais, 9 pacientes com fibromialgia, 9 controles negativos, e 9 controles positivos.  Resultados o TBARS foi maior no grupo com FM, e houve correlação entre as variáveis SOD e NP-SH nessa população. Destaca-se também, que as enzimas CAT e SOD, e os níveis de NP-SH, foram normais nos pacientes com FM. O sintoma mais relatado foi dor generalizada e cansaço e os níveis de creatinina foram estatisticamente menores no grupo FM.  Conclusões apesar dos níveis de enzimas antioxidantes estarem normais, os pacientes com fibromialgia apresentaram altos níveis de peroxidação lipídica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[SUMMARY  Introduction fibromyalgia (FM) is a clinical syndrome that manifests itself with generalized pain in the body, mainly in the muscles. In addition to this symptom, FM is associated with: fatigue, non-restorative sleep, cognitive disorders, anxiety, depression and intestinal disorders. It is hypothesized that chronic oxidative stress (OS) may be a risk factor for neural damage that leads to FM. However, studies that have already been published have evaluated different markers and present controversial results about FM, which raises the need for further research.  Aims To evaluate the biomarkers of EO, catalase (CAT), superoxide dismutase (SOD), non-protein thiols (NP-SH) and thiobarbituric acid reactive species (TBARS) in patients with FM before starting pharmacological treatment. To describe the sociodemographic characteristics, the most prevalent symptoms, and to analyze the correlation between biochemical analyzes and OS biomarkers.  Materials and methods This is a cross- sectional, quantitative, analytical and observational study. The sample consisted of female patients from a private clinic, including 9 patients with fibromyalgia, 9 negative controls, and 9 positive controls.  Results TBARS was higher in the FM group, and there was a correlation between SOD and NP-SH variables in this population. It is also noteworthy that CAT and SOD enzymes, and NP-SH levels, were normal in patients with FM. The most reported symptom was generalized pain and tiredness and creatinine levels were statistically lower in the FM group.  Conclusions Despite normal levels of antioxidant enzymes, fibromyalgia patients had high levels of lipid peroxidation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción la fibromialgia (FM) es un síndrome clínico que se manifiesta con dolor generalizado en el cuerpo, principalmente en los músculos. Además de este síntoma, la FM se asocia con: fatiga, sueño no reparador, trastornos cognitivos, ansiedad, depresión y trastornos intestinales. Se plantea la hipótesis de que el estrés oxidativo (OS) crónico puede ser un factor de riesgo de daño neuronal que conduce a la FM. Sin embargo, estudios ya publicados han evaluado diferentes marcadores y presentan resultados controvertidos sobre la FM, lo que plantea la necesidad de seguir investigando.  Objetivos evaluar los biomarcadores de EO, catalasa (CAT), superóxido dismutasa (SOD), tioles no proteicos (NP-SH) y especies reactivas del ácido tiobarbitúrico (TBARS) en pacientes con FM antes iniciar tratamiento farmacológico. Describir las características sociodemográficas, los síntomas más prevalentes y analizar la correlación entre los análisis bioquímicos y los biomarcadores de SG.  Materiales y métodos se trata de un estudio transversal, cuantitativo, analítico y observacional. La muestra estuvo compuesta por pacientes mujeres de una clínica privada, incluidas 9 pacientes con fibromialgia, 9 controles negativos y 9 controles positivos.  Resultados TBARS fue mayor en el grupo FM y hubo correlación entre las variables SOD y NP-SH en esta población. También es de destacar que las enzimas CAT y SOD, y los niveles de NP-SH, fueron normales en pacientes con FM. El síntoma más informado fue dolor generalizado y cansancio y los niveles de creatinina fueron estadísticamente más bajos en el grupo FM.  Conclusiones a pesar de los niveles normales de enzimas antioxidantes, los pacientes con fibromialgia tenían altos niveles de peroxidación lipídica.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Superóxido dismutase]]></kwd>
<kwd lng="pt"><![CDATA[catalase]]></kwd>
<kwd lng="pt"><![CDATA[glutationa]]></kwd>
<kwd lng="pt"><![CDATA[medicamentos]]></kwd>
<kwd lng="pt"><![CDATA[creatinina]]></kwd>
<kwd lng="en"><![CDATA[Superoxide dismutase]]></kwd>
<kwd lng="en"><![CDATA[catalase]]></kwd>
<kwd lng="en"><![CDATA[glutathione]]></kwd>
<kwd lng="en"><![CDATA[drugs]]></kwd>
<kwd lng="en"><![CDATA[creatinine]]></kwd>
<kwd lng="es"><![CDATA[Superóxido dismutasa]]></kwd>
<kwd lng="es"><![CDATA[catalasa]]></kwd>
<kwd lng="es"><![CDATA[glutation]]></kwd>
<kwd lng="es"><![CDATA[medicamentos]]></kwd>
<kwd lng="es"><![CDATA[creatinina]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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