Motor vehicle air pollution and asthma in children: A meta-analysis

Gasana, Janvier; Dillikar, Deepa; Mendy, Angelico; Forno, Erick; Vieira, Edgar Ramos

doi:10.1016/j.envres.2012.05.001

Cited by 258 publications

(163 citation statements)

References 76 publications

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“…This fi nding was consistent with other studies [29,30]. Different air pollutants released from motor vehicles can contribute to increased incidence of asthma and its symptoms such as wheezing [31]. Traffi c related pollution may even have higher infl uence on self-reported wheezing compared to other symptoms [32].…”

Section: Discussionsupporting

confidence: 82%

Asthma and Environmental Factors in Children

Mirzadeh

Kooshesh

Mehrara

2016

Acta Medica Bulgarica

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Summary. Asthma is one of the most prevalent atopic diseases in childhood. It is characterized by infl ammation of conductive airways and bronchial hyperresponsiveness. Environmental factors introduced to child in early years of life may have a protective or harmful role in developing atopic diseases. To evaluate the infl uence of some environmental factors such as cat or dog ownership, smoking of mother or father and environmental pollution on prevalence of wheezing in children. Subjects and methods: This was a cross sectional retrospective study. A questionnaire was designed based on International Study of Asthma and Allergies in Childhood (ISAAC). Parents of the subjects were asked to fi ll in the questionnaires. Children's wheezing association with keeping cats and dogs, smoking mother and father and frequency of truck passing in place of residence was investigated. 545 children were recruited in our study. Prevalence of wheezing was 9%. Keeping cats in fi rst year of life and last year was associated with less wheezing. But the latter association was not statistically signifi cant. Keeping dogs was so scarce in area of our study, so we could not perform a rightful analysis. Frequency of truck passing was signifi cantly higher in those with wheezing. Keeping cats in fi rst year of life was a signifi cant protective factor, whereas residence in an area with frequent truck passing increased wheezing in children. Results of our study can emphasize the need to keep children away from polluted areas. Further studies are needed to investigate whether keeping a pet in household can benefi t children regarding all possible concerns and benefi ts.

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Section: Discussionsupporting

confidence: 82%

Asthma and Environmental Factors in Children

Mirzadeh

Kooshesh

Mehrara

2016

Acta Medica Bulgarica

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“…Children are often the focus of research as they can be more vulnerable to air pollution. Their lungs and immune systems are not completely developed [4,13], they inhale a higher dose of airborne particles in relation to their size compared with adults [4,6,9] and may spend more time outdoors [4,11]. Children exposed to nitrogen dioxide within their first year are at an increased risk of developing a persistent cough and wheezing [10,13].…”

Section: Respiratory Illnessesmentioning

confidence: 99%

“…Short term exposure to traffic related air pollution has been linked to the exacerbation of asthma symptoms [4][5][6]. A meta-analysis found increasing evidence that long term exposure to traffic related air pollution can contribute to the development of new onset asthma in both children and adults [4].…”

Section: Respiratory Illnessesmentioning

confidence: 99%

A meta-analysis of the impact of traffic-related air pollution on health and the factors affecting exposure

Lockhart

Vaganay

Macintyre

et al. 2015

WIT Transactions on Ecology and the Environment

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Clean air is a basic requirement for health and well-being. One of the main sources of air pollution is traffic. It emits harmful pollutants including nitrogen dioxide and particulate matter. There is a large body of existing evidence regarding the public health impact of air pollution. A wide range of health problems including respiratory and cardiovascular illnesses have been found. The evidence in relation to the impact of traffic related air pollution is inconsistent therefore the aim of this paper is to provide clarity on the strength of evidence. In addition, the review will consider the impact of environmental and personal exposure factors. To identify relevant research, the database Science Direct was used along with a search strategy. This review found there is a large body of evidence in relation to air pollution from traffic, health impacts and environmental factors. Due to methodological limitations and the complexity of the interactions the strength of this evidence is mixed. Links to cardiovascular illnesses were considered the most significant. A number of environmental factors such as weather and built environment have significant impacts on traffic related air pollution levels. The review highlights the lack of comprehensive and robust evidence linking environmental factors, traffic related air pollution and health impacts. Future work should use appropriate methodologies to address these gaps.

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“…512 A meta-analysis concluded that pre-natal smoking had its strongest effect on young children, whereas post-natal maternal smoking seemed relevant only to asthma development in older children. 513 Exposure to outdoor pollutants, such as living near a main road, is associated with increased risk of asthma, 514 but one study suggested that this may only be important for children also exposed to tobacco smoke in-utero and in infancy. …”

Section: Pollutantsmentioning

confidence: 99%