Air pollution as a risk factor for increasing hospitalizations of preschool wheeze in Hong Kong

2018 ◽  
Vol 2 (1) ◽  
pp. 11 ◽  
Author(s):  
Ka-Ka Siu ◽  
Chin-Pang Wong ◽  
RachelShui-Ping Lee ◽  
JackPak-Yeung Chan ◽  
Shuk-Yu Leung ◽  
...  
Keyword(s):  
Air Pollution ◽  
Risk Factor ◽  
Hong Kong

Empirical Assessment and Modeling of Traffic-induced Air Pollution

2021 ◽  
pp. 036119812110237
Author(s):  
Zhongyang Lu ◽  
Andy H. F. Chow ◽  
Jacky Leung ◽  
Haydn Kwok ◽  
Sammy Cheung
Keyword(s):  
Air Pollution ◽  
Hong Kong ◽  
Road Network ◽  
Historical Data ◽  
Flow Speed ◽  
Traffic Flows ◽  
Real World Data ◽  
Empirical Assessment ◽  
Air Quality Monitoring Stations ◽  
Transport Management

Congestion and traffic-induced air pollution are associated with population growth and economic development. Compared with congestion, there are relatively few studies on modeling and assessment of traffic-induced pollution. This paper presents an empirical assessment and analysis of traffic-induced air pollution with real-world data collected from the Hong Kong Strategic Road Network. The study employed historical data of traffic flows, speeds, and emission of air pollutants collated by the Hong Kong Transport Department and Environmental Protection Department. This paper first reveals the correlation between traffic flows, speeds, and corresponding induced pollutants including nitrogen oxides (NO2, NOX) and carbon monoxide (CO). To gain further statistical insight, a regression analysis was conducted on the flow–speed–emission relationship at three air quality monitoring stations, which revealed the significance of various factors on this relationship. This study contributes to green transport management and urban sustainability.

Abstract P391: Inhalation Of Airborne Particulate Matter Alters Cardiovascular Function Of Alzheimer-prone Mice

2021 ◽  
Vol 129 (Suppl_1) ◽  
Author(s):  
Devin R O'Piela ◽  
Ty A Saldana ◽  
David M Aslaner ◽  
Matthew W Gorr ◽  
Amy R Mackos ◽  
...  
Keyword(s):  
Heart Failure ◽  
Air Pollution ◽  
Risk Factor ◽  
Particulate Matter ◽  
Mouse Model ◽  
Transgenic Mouse ◽  
Airborne Particulate Matter ◽  
Transgenic Mouse Model ◽  
Cardiovascular Dysfunction ◽  
Airborne Particulate

Air pollution has detrimental effects on cardiovascular and lung function, and the extent of its pathological consequences continues to be uncovered. Recently, air pollution has been implicated in the development of Alzheimer Disease (AD) progression. AD and heart failure are common co-morbidities, giving reason to believe that cardiovascular dysfunction may contribute to AD. A known contributor to cardiovascular dysfunction-particulate matter (PM 2.5 , < 2.5 μm diameter)—is a critical component of air pollution and is considered a risk factor for heart failure and AD development. This co-morbidity pattern and shared environmental risk factor prompted the hypothesis that PM 2.5 contributes to cardiovascular dysfunction in a transgenic mouse model of AD. We tested our hypothesis by subjecting 6-month-old transgenic (APP) and non-carrier wildtype (WT) male mice to filtered air (FA) or PM 2.5 for 5 days/week, 6 hours/day for 3 months (n = 34). Following exposure, echocardiography, pressure-volume (PV) loops, and respiratory mechanics were performed to detect cardiac and pulmonary changes associated with genotype and exposure conditions among the 3-month group. Echocardiography revealed left ventricular anterior wall thickness in systole was significantly elevated among PM-exposed APP mice compared to FA-exposed APP controls. PV data demonstrated significant reduced end-systolic elastance in PM-exposed mice compared to FA-exposed mice in both WT and APP mouse models, demonstrating impaired contractility. PV loops also showed that the time constant of isovolumetric relaxation was increased in PM-exposed compared to FA-exposed WT mice. APP mice experienced higher lung resistance and central airway resistance with an increasing dose of methacholine. Taken together, these findings indicate airborne particulate matter exposure causes cardiac and pulmonary dysfunction in a transgenic mouse model of AD.

Air pollution is a risk factor for multiple sclerosis – No

2021 ◽  
pp. 135245852110268
Author(s):  
Guillermo Delgado-García ◽  
Teresa Corona
Keyword(s):  
Multiple Sclerosis ◽  
Air Pollution ◽  
Risk Factor

CROSS-BOUNDARY AIR POLLUTION CONTROL UNDER “ONE COUNTRY, TWO SYSTEMS”: PERSPECTIVES FROM HONG KONG–GUANGDONG COLLABORATION

2017 ◽  
Vol 65 (03) ◽  
pp. 601-625
Author(s):  
TING YIN TIFFANY WONG ◽  
YUAN XU ◽  
YOUNGHO CHANG
Keyword(s):  
Air Pollution ◽  
Hong Kong ◽  
Pollution Control ◽  
Local Governments ◽  
Central Government ◽  
Necessary Conditions ◽  
Air Pollution Control ◽  
Two Systems ◽  
One Country Two Systems ◽  
Effective Collaboration

This study aims to examine how “One Country, Two Systems” has shaped and influenced the collaboration on cross-boundary air pollution control between the governments of the Hong Kong Special Administrative Region and the Guangdong province. The presence of the Chinese central government significantly fostered the start of this collaboration, but the implementation and collaborative relationship were relatively weak and unsustainable due to the two local governments’ largely different interests, goals and political demands. We found that the emphasis on “One Country” especially after 2003 led to the signature of more joint agreements in comparison with what the emphasis on “Two Systems” did between 1997 and 2003. Joint agreements appear to be necessary conditions for effective collaboration, but too many of them without satisfying implementation could have resulted in less concrete benefits. A balanced stress on “One Country” and “Two Systems” might bring an appropriate number of joint agreements with good implementation for more effective collaboration.

scholarly journals ON THE RELATIONSHIP OF ANTHROPOGENIC AIR POLLUTION BY PARTICULATE MATTER WITH CANCER RISK

2020 ◽  
Vol 99 (3) ◽  
pp. 298-302
Author(s):  
Alla F. Kolpakova
Keyword(s):  
Air Pollution ◽  
Risk Factor ◽  
Particulate Matter ◽  
Meta Analysis ◽  
Preventive Measure ◽  
Premature Mortality ◽  
Morbidity And Mortality ◽  
Economic Losses ◽  
Economic Damage ◽  
Transitional Metals

In the review the author highlights contemporary concepts about the relation between the air pollution by the particulate matter (PM) and human morbidity and mortality due to oncological diseases (OD). The author used materials of the articles indexed in the PubMed and RISC databases. The role of air pollution by PM as a risk factor of carcinogenesis in dependence on size, origin, chemical composition and concentration in air is discussed. PM of road-transport origin contains transitional metals acknowledged as most dangerous and is the result the operational wear of motor transport, road surface, and vehicle emissions. Long-term exposure to PM with an aerodynamic diameter ≤2.5 increases risk of appearance of OD of different localization. Dose-dependent action of PM was established. Reduction in air pollution by PM is accompanied by decrease of premature mortality of population, including from OD, and it can be examined as a modifiable risk factor. The results of the meta-analysis of literature data about the economic damage, caused by morbidity and mortality from OD led to the conclusion that reduction in PM concentration is the most realistic and effective method to decrease these social and economic losses. The accumulated carcinogenic risk provides for the lifelong probability of the development of OD, which requires the active medical examination of workers after the curtailment of work with carcinogens for early diagnostics and treatment of OD. The important preventive measure is to decrease the level of air pollution independently on their initial concentration.

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