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Message: [QUOTE="greenmedinfo, post: 1289"] PMID: Rev Environ Health. 2021 Dec 20 ;36(4):535-544. Epub 2021 Jan 4. PMID: 34821118 Abstract Title: Ambient air pollution and multiple sclerosis: a systematic review. Abstract: OBJECTIVES: Some studies have shown that environmental risk factors, including air pollution, might be related to the incidence or recurrence of multiple sclerosis (MS). This systematic review was conducted to investigate the relation between air pollution and MS.METHODS: A systematic search was conducted in PubMed, Scopus, Science Direct, Embase, and Web of Science; until January 2020 with no restrictions. The search strategy was conducted with air pollution key words such as CO, PM, PM, SO, and NO, for exposure and the key word "Multiple sclerosis" as the outcome.RESULTS: Eventually, after applying the inclusion and exclusion criteria, 17 articles were included. The methodologies and outcomes reported were heterogeneous and different metrics had been used in the results; therefore conducting a meta-analysis was not possible. Eight studies had analyzed the relation between particulate matter (PM) and the prevalence or relapse of MS and had observed a significant relation. NOand NOx were associated with recurrence or prevalence of MS in three studies. But, in three cohort studies, no association was observed between air pollution and recurrence or occurrence of MS.CONCLUSIONS: The results of this systematic review show that outdoor air pollution, especially PM and nitrogen oxides might be related to the prevalence or relapse of MS. [URL='https://www.greenmedinfo.com/article/results-systematic-review-show-outdoor-air-pollution-especially-pm-and-nitroge']read more[/URL] [/QUOTE]

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