Factors Associated with Low Level of Urinary Inorganic Arsenic Concentration

Rubilar, Paola; Muñoz, Manuel J.; Valdés, Macarena; Saavedra, Marta; Iglesias, Verónica

doi:10.1289/isesisee.2018.p03.3510

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“…Arsenic exposure in northern Chile represents a public health concern, as drinking water is the main source of exposure [ 41 , 42 ]. However, in the city of Arica, the concern regarding arsenic exposure was aggravated by the deposition and abandonment of 20,000 tons of toxic waste in a sector where social housing was built years later [ 21 ], this population being homogeneous in terms of low socio-economic level.…”

Section: Discussionmentioning

confidence: 99%

Urinary Arsenic Concentration and Its Relationship with Bronchial Asthma in Children from Arica, Chile

Muñoz

Iglesias

Saavedra

et al. 2022

Toxics

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In the city of Arica, northern Chile, the population has been involuntarily exposed to arsenic of natural and anthropogenic origin. This study aims to evaluate the association between urinary arsenic concentration and bronchial asthma diagnosis in the children of Arica. A cross-sectional analysis of a database of 1892 subjects under 18 years of age enrolled in the Environmental Health Centre between 2009 and 2021 was carried out. Arsenic exposure was obtained from a urine sample and bronchial asthma diagnosis from the database of the system for the management of explicit health guarantees. Logistic regression models were used to assess the association between inorganic arsenic and asthma. The median inorganic arsenic was 15 μg/L, and the prevalence of asthma was 7.4%. After adjusting for sex, age, ethnicity, and urinary creatinine, children with the highest tertile of urinary arsenic concentration (≥21.4 μg/L) had a greater chance of developing asthma (odds ratio (OR) 1.90; 95% confidence interval (CI) [1.13–3.18]). When exploring the modifying effect of ethnicity, the association increased among children belonging to any ethnic group (OR 3.51, 95%CI [1.43–8.65]). These findings suggest a relationship between arsenic exposure and bronchial asthma in children. While further studies are needed to assess the impact of arsenic on respiratory health, mitigation efforts to reduce arsenic exposure should be maintained.

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Section: Discussionmentioning

confidence: 99%