京都大学 · 環境科学
Ueda教授の研究室は、大気汚染物質、特に微小粒子状物質（PM2.5やPM10）および砂塵（アジアダスト）の健康影響に注目し、短期的・長期的な暴露が呼吸器疾患や循環器疾患に与える影響を疫学的手法を用いて解明しています。特に、子供のアレルギー性喘息の入院リスクや、緊急救急搬送の増加と大気質の関連を、レーザー観測（リモートセンシング）と時間別ケースクロスオーバー解析を組み合わせた独自のアプローチで分析しています。また、PMの化学成分や大気中での上層大気を通過する経路の違いが健康影響に与える影響についても探求しています。
Figures are computed from collected data and may differ slightly.
This study showed that temperature fluctuation, SPM, and NO(2) were associated with an increased risk of hospitalization of children for asthma.
Asian Dust (AD) particles transported from source areas contribute to sharp increases in coarse particles in Japan. We examined the association of exposure to AD events with emergency ambulance dispatches in Nagasaki city. We also examined whether AD transported at different altitude routes from source areas influenced dispatch rates. Using lidar (light detection and ranging), we determined moderate AD days (0.066/km <dust extinction coefficient ≤0.105/km) and heavy AD days (0.105/km <dust extin
These findings suggest that some specific PM components have a more hazardous effect than others and contribute to seasonal variation in the health effects of PM2.5.
Positive associations between PM (2.5) and heart disease mortality in Japan were observed. The effects of PM(2.5) may vary by disease and age.
Small particles can reach alveoli without being trapped in the upper respiratory tract and may have a greater impact on health than larger particles. Given the limited knowledge on health effects of fine particulate matter (PM2.5) in Japan, the short-term effects of PM2.5 on daily mortality using the generalized additive model (GAM), generalized linear model (GLIM), and time-stratified case-crossover analysis were estimated. Daily mortality data were obtained from the Ministry of Health, Labor,
Long-term exposure to PM was not associated with increased cardiovascular mortality risk in this population-based cohort in Japan.
Long-term exposure to air pollution, especially for PM<sub>10</sub> and SO<sub>2</sub> was associated with self-reported high blood pressure, high blood cholesterol, and diabetes in subjects of TCS. Our study supports that exposure to air pollution increases cardiovascular disease risk factors for younger population.
Short-term health effects of ambient PM<sub>2.5</sub> have been established with numerous studies, but evidence in Asian countries is limited. This study aimed to investigate the short-term effects of PM<sub>2.5</sub> on acute health outcomes, particularly all-cause, cardiovascular, respiratory, cerebrovascular and neuropsychological outcomes. We utilized daily emergency ambulance dispatches (EAD) data from eight Japanese cities (2007-2011). Statistical analyses included two stages: (1) City-lev
We did not find any definite difference in the effect of high temperature on ambulance dispatches for different age groups. However, more measures should be taken for younger and middle-aged people to avoid heat-related illnesses.
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