Association between daily ambient air pollution and respiratory symptoms in children with asthma and healthy children in western Japan

Hasunuma, Hideki; Yamazaki, Shin; Tamura, Kenji; Hwang, Yoonha; Ono, Ryo; Amimoto, Yuko; Askew, David J.; Odajima, Hiroshi

doi:10.1080/02770903.2017.1369988

Cited by 24 publications

(13 citation statements)

References 23 publications

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“…We failed to explain any association of local differences in air pollution from the traffic with either symptoms or COPD, as both CAT, mMRT scores, and COPD prevalence were similar in those living in the first, second, third or even fifth row of houses from the major road. Outdoor air pollution in studies elsewhere consistently showed greater likelihood of respiratory symptoms in both children and adults [24][25][26][27] and COPD. [8][9][10] We hypothesize, that the basic air pollution level in Almaty is so high, that a distance of 50 to 100 meters from a major road cannot play a role in worsening the symptoms.…”

Section: Figurementioning

confidence: 88%

<p>Lifetime Occupational History, Respiratory Symptoms and Chronic Obstructive Pulmonary Disease: Results from a Population-Based Study</p>

Vinnikov¹,

Raushanova²,

Kyzayeva³

et al. 2019

COPD

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Purpose: To ascertain the effect of lifelong occupational history, ambient air pollution, and biochemically verified smoking status on chronic obstructive pulmonary disease (COPD) in a general population of one the largest cities in Central Asia, Almaty. Patients and methods: 1500 adults (median age 49, interquartile range (IQR) 28 years), 50% females, were randomly selected from a registry of enlisted population of a primary care facility in Almaty, Kazakhstan and they filled in the questionnaire on demographics, respiratory symptoms (CAT and mMRC), smoking status, verified by exhaled carbon monoxide, and detailed lifetime occupational history. COPD was defined as postbronchodilator forced expiratory volume in 1 second (FEV1)/forced vital capacity (FVC) below lower limit of normal (LLN) using Belintelmed MAS-2 spirometer (Belarus). Results: 230 (15%) subjects had CAT≥10; 136 (9%) participants had mMRC score ≥2. Greater CAT score was associated with age, smaller income, and less exercise, but not with smoking or living closer to a major road. 26% of the population was ever exposed to vapors, gases, dusts, and fumes (VGDF). In age group 40 years and above (N=1024), COPD was found in 57 participants (prevalence 5.6%), more in men (8.7% vs 3.4%). In the multivariate model adjusted for age, sex, ever-smoking, income, and exercise, any exposure to VGDF increased the odds of COPD (odds ratio (OR) 1.71; 95% confidence interval (CI) 1.03; 2.84), more in the highest exposure category (OR 2.36 (95% CI 1.20; 4.66)). Conclusion: Lifetime exposure to VGDF, found in ¼ of the general population, increased the odds of COPD independent of smoking by 71%.

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Section: Figurementioning

confidence: 88%

<p>Lifetime Occupational History, Respiratory Symptoms and Chronic Obstructive Pulmonary Disease: Results from a Population-Based Study</p>

Vinnikov¹,

Raushanova²,

Kyzayeva³

et al. 2019

COPD

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“…This may be mainly because of two reasons: first, children's low immune function makes them more susceptible to respiratory infections, and second, previous studies have shown that air pollution may lead to increased respiratory diseases in children. [8][9][10] The Global Burden of Disease 2013 study found that lower respiratory tract infections were the leading cause of hospitalization for children aged 0-19 years in most developing countries, and particularly among children younger than 5 years. 11 Many of the risk factors for respiratory diseases, such as household air pollution and low immunity, are avoidable through proper prevention and management.…”

Section: Discussionmentioning

confidence: 99%

Disease spectrum analysis of hospitalized children in China: A study of 18 tertiary children's hospitals

Feng

Tian

Wang

et al. 2019

Pediatric Investigation

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Importance Morbidity and mortality of children are important indicators of the performance of the public health system in any country. In China, the children's disease spectrum has gradually changed in recent years. However, the gender‐ and age‐specific disease spectrum for hospitalized children under 15 years old is still unclear. Objective To explore the gender‐ and age‐based distribution of diseases in hospitalized children under 15 years in China. Methods Medical records home page data for 2016 to 2018 were collected from 18 tertiary children's hospitals in China. The gender‐ and age‐specific disease spectrum was analyzed, using the tenth revision of the International Statistical Classification of Diseases and Related Health Problems (ICD‐10). Results The most common diseases were those of the respiratory system (25.7% of all 2 232 142 hospitalized children). The top three diseases for boys were diseases of the respiratory system (25.6%), diseases of the digestive system (11.4%) and certain conditions originating in the perinatal period (8.6%). The top three diseases for girls were diseases of the respiratory system (25.9%), certain conditions originating in the perinatal period (10.1%), and factors influencing health status and contact with health services (9.4%). The most common diseases for children under 1 year old were certain conditions originating in the perinatal period (38.1%). For all other age groups, the most common conditions were respiratory diseases (33.8% for those aged 1–3 years, 25.2% for those aged 4–6 years, and 12.2% for those aged 7–14 years). Interpretation This study analyzed the medical records home pages of 18 children's hospitals to provide the first overview of the disease spectrum and its gender‐ and age‐specific distribution among children in China.

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“…Optimising an individual's level of asthma control may influence respiratory response to in-vehicle exposures during rush-hour commuting, with one study in the USA showing that the largest post-commute increases in exhaled nitric oxide occurred in participants with below-median asthma control, and higher PM 2.5 was associated with a lower forced expiratory volume in 1 s percentage predicted in this group [183]. Among Japanese children with asthma, exacerbation of respiratory signs and symptoms ( percentage maximum peak expiratory flow and coughing) associated with oxidant exposure from ambient air pollution appeared greater in those who were not using long-term medications than those who were [184].…”

Section: Background and Evidencementioning

confidence: 83%

Personal strategies to minimise effects of air pollution on respiratory health: advice for providers, patients and the public

Salvi²,

et al. 2020

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As global awareness of air pollution rises, so does the imperative to provide evidence-based recommendations for strategies to mitigate its impact. While public policy has a central role in reducing air pollution, exposure can also be reduced by personal choices. Qualified evidence supports limiting physical exertion outdoors on high air pollution days and near air pollution sources, reducing near-roadway exposure while commuting, utilising air quality alert systems to plan activities, and wearing facemasks in prescribed circumstances. Other strategies include avoiding cooking with solid fuels, ventilating and isolating cooking areas, and using portable air cleaners fitted with high-efficiency particulate air filters. We detail recommendations to assist providers and public health officials when advising patients and the public regarding personal-level strategies to mitigate risk imposed by air pollution, while recognising that well-designed prospective studies are urgently needed to better establish and validate interventions that benefit respiratory health in this context.

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Association between daily ambient air pollution and respiratory symptoms in children with asthma and healthy children in western Japan

Abstract: Our results suggest that using long-term medications to manage asthma may play an important role in preventing exacerbation of respiratory symptoms due to air pollution.

Cited by 24 publications

References 23 publications

<p>Lifetime Occupational History, Respiratory Symptoms and Chronic Obstructive Pulmonary Disease: Results from a Population-Based Study</p>

<p>Lifetime Occupational History, Respiratory Symptoms and Chronic Obstructive Pulmonary Disease: Results from a Population-Based Study</p>

Disease spectrum analysis of hospitalized children in China: A study of 18 tertiary children's hospitals

Personal strategies to minimise effects of air pollution on respiratory health: advice for providers, patients and the public

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