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Oxidative potential of metal-polluted urban dust as a potential environmental stressor for chronic diseases.
Schiavo, Benedetto; Meza-Figueroa, Diana; Vizuete-Jaramillo, Efrain; Robles-Morua, Agustin; Angulo-Molina, Aracely; Reyes-Castro, Pablo A; Inguaggiato, Claudio; Gonzalez-Grijalva, Belem; Pedroza-Montero, Martin.
Afiliación
  • Schiavo B; Instituto de Geofísica, Universidad Nacional Autónoma de México, 04150, Mexico City, Mexico. benedetto@igeofisica.unam.mx.
  • Meza-Figueroa D; Departamento de Geología, Universidad de Sonora, Rosales y Encinas, 83000, Hermosillo, Sonora, Mexico. diana.meza@unison.mx.
  • Vizuete-Jaramillo E; Departamento de Ciencias del Agua y del Medio Ambiente, Instituto Tecnológico de Sonora, Ciudad Obregón, Mexico.
  • Robles-Morua A; Departamento de Ciencias del Agua y del Medio Ambiente, Instituto Tecnológico de Sonora, Ciudad Obregón, Mexico.
  • Angulo-Molina A; Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Rosales y Encinas, 83000, Hermosillo, Sonora, Mexico.
  • Reyes-Castro PA; Centro de Estudios en Salud y Sociedad, El Colegio de Sonora, Hermosillo, Mexico.
  • Inguaggiato C; Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada, Baja California (CICESE), Ensenada, Mexico.
  • Gonzalez-Grijalva B; Departamento de Geología, Universidad de Sonora, Rosales y Encinas, 83000, Hermosillo, Sonora, Mexico.
  • Pedroza-Montero M; Departamento de Investigación en Física, Universidad de Sonora, Rosales y Encinas, 83000, Hermosillo, Sonora, Mexico.
Environ Geochem Health ; 45(6): 3229-3250, 2023 Jun.
Article en En | MEDLINE | ID: mdl-36197533
Oxidative stress (OS) associated with metals in urban dust has become a public health concern. Chronic diseases linked to general inflammation are particularly affected by OS. This research analyzes the spatial distribution of metals associated with OS, the urban dust´s oxidative potential (OP), and the occurrence of diseases whose treatments are affected by OS. We collected 70 urban dust samples during pre- and post-monsoon seasons to achieve this. We analyzed particle size distribution and morphology by scanning electron microscopy, as well as metal(loid)s by portable X-ray fluorescence, and OP of dust in artificial lysosomal fluid by using an ascorbic acid depletion assay. Our results show that the mean concentration of Fe, Pb, As, Cr, Cu, and V in pre-monsoon was 83,984.6, 98.4, 23.5, 165.8, 301.3, and 141.9 mg kg-1, while during post-monsoon was 50,638.8, 73.9, 16.7, 124.3, 178.9, and 133.5 mg kg-1, respectively. Impoverished areas with the highest presence of cardiovascular, cancer, diabetes, and respiratory diseases coincide with contaminated areas where young adults live. We identified significant differences in the OP between seasons. OP increases during the pre-monsoon (from 7.8 to 237.5 nmol AA min-1) compared to the post-monsoon season (from 1.6 to 163.2 nmol AA min-1). OP values are much higher than measured standards corresponding to contaminated soil and urban particulate matter, which means that additional sources beside metals cause the elevated OP. The results show no risk from chronic exposure to metals; however, our results highlight the importance of studying dust as an environmental factor that may potentially increase oxidative stress.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Monitoreo del Ambiente / Metales Pesados Tipo de estudio: Guideline / Prognostic_studies Límite: Adult / Humans Idioma: En Revista: Environ Geochem Health Asunto de la revista: QUIMICA / SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: México Pais de publicación: Países Bajos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Monitoreo del Ambiente / Metales Pesados Tipo de estudio: Guideline / Prognostic_studies Límite: Adult / Humans Idioma: En Revista: Environ Geochem Health Asunto de la revista: QUIMICA / SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: México Pais de publicación: Países Bajos