<?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>1665-5044</journal-id>
<journal-title><![CDATA[Revista mexicana de neurociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. neurocienc.]]></abbrev-journal-title>
<issn>1665-5044</issn>
<publisher>
<publisher-name><![CDATA[Academia Mexicana de Neurología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-50442024000500002</article-id>
<article-id pub-id-type="doi">10.24875/rmn.24000012</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Factors associated with psychotic symptoms in Parkinson's disease: a cross-sectional study]]></article-title>
<article-title xml:lang="es"><![CDATA[Factores asociados con síntomas psicóticos en la enfermedad de Parkinson: un estudio transversal]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Esparza-Hernández]]></surname>
<given-names><![CDATA[Claudia N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garza-Brambila]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acevedo-Castillo]]></surname>
<given-names><![CDATA[Carlos D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-De las Fuentes]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robles-Rodriguez]]></surname>
<given-names><![CDATA[Elly M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Molina-Resendiz]]></surname>
<given-names><![CDATA[Ana M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cervantes-Arriaga]]></surname>
<given-names><![CDATA[Amin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salinas-Barboza]]></surname>
<given-names><![CDATA[Karla]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Isais-Millan]]></surname>
<given-names><![CDATA[Sara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Anaya-Escamilla]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gonzalez-Cantú]]></surname>
<given-names><![CDATA[Arnulfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodriguez-Violante]]></surname>
<given-names><![CDATA[Mayela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martinez-Ramirez]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Escuela de Medicina y Ciencias de la Salud Tecnológico de Monterrey ]]></institution>
<addr-line><![CDATA[Monterrey ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Escuela de Medicina y Ciencias de la Salud Tecnológico de Monterrey ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Neurología y Neurocirugía Laboratorio Clínico de Enfermedades Neurodegenerativas ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hospital General de México Servicio de Neurología ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Hospital Regional "General Ignacio Zaragoza" ISSSTE Servicio de Neurología ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Christus Muguerza Hospital Sur Servicio de Neurología ]]></institution>
<addr-line><![CDATA[Monterrey ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Christus Muguerza Alta Especialidad Servicio de Neurología ]]></institution>
<addr-line><![CDATA[Monterrey ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2024</year>
</pub-date>
<volume>25</volume>
<numero>5</numero>
<fpage>125</fpage>
<lpage>130</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-50442024000500002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-50442024000500002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-50442024000500002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: The study aimed to investigate the relationship between autonomic dysfunction, specifically orthostatic hypotension, and the presence of psychosis in Parkinson's disease (PD) patients. In addition, we aimed to identify other non-motor factors influencing the development of psychosis.  Methods: We conducted a multicentric observational cross-sectional study to investigate the potential association between autonomic dysfunction and psychosis in PD patients. Approval was obtained from the institutional review board. Participants (n = 306) were recruited through non-probabilistic convenience sampling from the Mexican Parkinson Study Group cohort. Data collection occurred between July 2017 and June 2018. Demographic and clinical data were collected, including age, gender, disease duration, medication, and movement disorders society-unified Parkinson's disease rating scale (MDS-UPDRS) scores. Psychosis symptoms were assessed using MDS-UPDRS item 1.2, whereas autonomic dysfunction was assessed using items 1.10, 1.11, and 1.12. Descriptive statistics, Chi-square tests, Mann–Whitney U tests, and logistic regression were employed for analysis using IBM SPSS version 25.  Results: In our multicenter cohort of 306 Mexican PD patients, 18% reported symptoms of psychosis. Among these patients, orthostatic hypotension on standing was significantly associated with symptoms of psychosis (p = 0.001, OR 2.82). Regression analysis identified apathy (p = 0.003), cognitive impairment (p = 0.012), and longer disease duration (p = 0.001) as predictors of symptoms of psychosis.  Conclusions: While orthostatic hypotension is associated with symptoms of psychosis, cognitive impairment, apathy, and disease duration significantly contribute to its presence in our cohort. These findings underscore the complexity of factors contributing to psychosis in PD. Recognizing these non-motor factors is crucial for the comprehensive care and management of PD patients, especially those at risk of developing psychosis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Investigar la relación entre la disfunción autonómica, específicamente la hipotensión ortostática, y la presencia de psicosis en pacientes con enfermedad de Parkinson (EP). Además, identificar otros factores no motores que influyen en el desarrollo de la psicosis.  Métodos: Realizamos un estudio multicéntrico observacional de corte transversal. Se obtuvo la aprobación del comité de ética institucional. Los participantes (n = 306) fueron reclutados mediante muestreo de conveniencia no probabilístico de la cohorte del Grupo Mexicano de Estudio de Parkinson. La recolección de datos ocurrió entre julio de 2017 y junio de 2018. Se recopilaron datos demográficos y clínicos, incluyendo edad, género, duración de la enfermedad, medicación y puntajes MDS-UPDRS. Los síntomas psicóticos se evaluaron utilizando el ítem 1.2, mientras que la disfunción autonómica se evaluó utilizando los ítems 1.10, 1.11 y 1.12 del MDS-UPDRS. Se emplearon estadísticas descriptivas, pruebas de chi-cuadrado, pruebas U de Mann-Whitney y regresión logística para el análisis.  Resultados: El 18% reportó síntomas de psicosis. Entre estos pacientes, la hipotensión ortostática se asoció significativamente con síntomas de psicosis (p = 0.001, RM 2.82). El análisis de regresión identificó la apatía (p = 0.003), el deterioro cognitivo (p = 0.012) y una duración más larga de la enfermedad (p = 0.001) como predictores de síntomas de psicosis.  Conclusiones: Aunque la hipotensión ortostática se asocia con síntomas de psicosis, el deterioro cognitivo, la apatía y la duración de la enfermedad contribuyen significativamente a su presencia en nuestra cohorte. Estos hallazgos subrayan la complejidad de los factores que contribuyen a la psicosis en la EP.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Parkinson’s disease]]></kwd>
<kwd lng="en"><![CDATA[Psychosis]]></kwd>
<kwd lng="en"><![CDATA[Apathy]]></kwd>
<kwd lng="en"><![CDATA[Cognitive impairment]]></kwd>
<kwd lng="en"><![CDATA[Autonomic dysfunction]]></kwd>
<kwd lng="es"><![CDATA[Enfermedad de Parkinson]]></kwd>
<kwd lng="es"><![CDATA[Psicosis]]></kwd>
<kwd lng="es"><![CDATA[Apatía]]></kwd>
<kwd lng="es"><![CDATA[Deterioro cognitivo]]></kwd>
<kwd lng="es"><![CDATA[Disfunción autonómica]]></kwd>
</kwd-group>
</article-meta>
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