Outdoor fine particulate matter exposure and telomere length in humans: A systematic review and meta-analysis

Autor: Bincai Wei, Yawen Zhou, Qian Li, Shihan Zhen, Qingyao Wu, Zhiyi Xiao, Jian Liao, Bin Zhu, Jiahao Duan, Xueli Yang, Fengchao Liang
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Ecotoxicology and Environmental Safety, Vol 275, Iss , Pp 116206- (2024)
Druh dokumentu: article
ISSN: 0147-6513
DOI: 10.1016/j.ecoenv.2024.116206
Popis: Although the association between changes in human telomere length (TL) and ambient fine particulate matter (PM2.5) has been documented, there remains disagreement among the related literature. Our study conducted a systematic review and meta-analysis of epidemiological studies to investigate the health effects of outdoor PM2.5 exposure on human TL after a thorough database search. To quantify the overall effect estimates of TL changes associated with every 10 μg/m3 increase in PM2.5 exposure, we focused on two main topics, which were outdoor long-term exposure and prenatal exposure of PM2.5. Additionally, we included a summary of short-term PM2.5 exposure and its impact on TL due to limited data availability.Our qualitative analysis included 20 studies with 483,600 participants. The meta-analysis showed a statistically significant association between outdoor PM2.5 exposure and shorter human TL, with pooled impact estimates (β) of −0.12 (95% CI: −0.20, −0.03, I2= 95.4%) for general long-term exposure and −0.07 (95% CI: −0.15, 0.00, I2= 74.3%) for prenatal exposure.In conclusion, our findings suggest that outdoor PM2.5 exposure may contribute to TL shortening, and noteworthy associations were observed in specific subgroups, suggesting the impact of various research variables. Larger, high-quality studies using standardized methodologies are necessary to strengthen these conclusions further.
Databáze: Directory of Open Access Journals