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Ciencia básica y patogénesis

Giselle Rangel1,2, Berta Alicia Muñoz3, Morgan Ramirez4

  • 1Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Centro de Neurociencias, Panamá, Panamá, Panama.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 28, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Las infecciones como Chlamydophila pneumoniae pueden aumentar el riesgo de la enfermedad de Alzheimer. La exposición acumulativa a patógenos se relaciona con el deterioro cognitivo y una menor velocidad de procesamiento en adultos mayores.

Palabras clave:
Chlamydophila pneumoniaeAlzheimerdeterioro cognitivoexposición a patógenosadultos mayores

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Área de la Ciencia:

  • Neurociencia; Epidemiología de Enfermedades Infecciosas; Gerontología

Sus antecedentes:

  • La prevalencia de la enfermedad de Alzheimer (EA) está aumentando a nivel mundial, especialmente en las poblaciones que envejecen.; La evidencia emergente sugiere que los patógenos pueden desencadenar inflamación, lo que lleva al deterioro cognitivo y a enfermedades neurodegenerativas como la EA.; Comprender estos vínculos es crucial para desarrollar estrategias preventivas.

Objetivo del estudio:

  • Investigar la asociación entre el deterioro cognitivo y los anticuerpos contra diversos patógenos en adultos mayores.; Explorar el papel de infecciones específicas y la exposición acumulativa a patógenos en el declive cognitivo.; Analizar factores demográficos, inflamatorios y cognitivos en relación con la seropositividad de patógenos.

Principales métodos:

  • Estudio retrospectivo de casos y controles de 165 participantes (≥65 años) del estudio Panama Aging Research Initiative Health Disparities (PARI-HD).; Se evaluaron anticuerpos IgG contra siete patógenos diversos (T. gondii, HSV-1, CMV, H. pylori, C. pneumoniae, T. pallidum, T. cruzi).; Se utilizó regresión multivariable para analizar las asociaciones entre anticuerpos de patógenos, biomarcadores de inflamación y función cognitiva.

Principales resultados:

  • La seropositividad de Chlamydophila pneumoniae fue significativamente mayor en individuos con deterioro cognitivo (p=0,02).; Los niveles elevados de TNF-α se correlacionaron con la seropositividad de C. pneumoniae (OR=2,08).; La exposición acumulativa a patógenos aumentó la probabilidad de deterioro cognitivo (OR=1,51) y redujo la velocidad de procesamiento (OR=17,43).; Las interacciones de múltiples patógenos, particularmente con C. pneumoniae, aumentaron significativamente el riesgo de deterioro cognitivo (OR=4,07).

Conclusiones:

  • Los hallazgos sugieren una relación entre la infección por C. pneumoniae y el deterioro cognitivo en una población hispana.; Los resultados resaltan el papel potencial de las infecciones polipatogénicas en la patogénesis de la enfermedad de Alzheimer.; Se necesita más investigación para dilucidar los mecanismos específicos que involucran C. pneumoniae y la EA.