Characterization of allergenicity of Platanus pollen allergen a 3 (Pla a 3) after exposure to NO and O.

Pollen allergens, widely present in the atmosphere, are the main cause of seasonal respiratory diseases that affect millions of people worldwide. Although previous studies have reported that nitrogen dioxide (NO) and ozone (O) promote pollen allergy, the specific biological processes and underlying mechanisms remain less understood. In this study, Platanus pollen grains were exposed to gaseous pollutants (NO and O).

Relationships between chemical elements of PM and O in Shanghai atmosphere based on the 1-year monitoring observation.

Mass level of fine particles (PM) in main cities in China has decreased significantly in recent years due to implementation of Chinese Clean Air Action Plan since 2013, however, O pollution is getting worse than before, especially in megacities such as in Shanghai. In this work, O and PM were continuously monitored from May 27, 2018 to March 31, 2019. Our data showed that the annual average concentration of PM and O (O-8 hr, maximum 8-hour moving average of ozone days) was 39.

Studies on relationships between air pollutants and allergenicity of Humulus Scandens pollen collected from different areas of Shanghai.

Pollen pollution and allergy are becoming prominent issues in China. However, few studies on pollinosis have been reported. As an allergen in the atmosphere, allergenic Humulus scandens pollen was collected from four districts of Shanghai, including Wusong (WS), Jiading (JD), Xujiahui (XJH) and Songjiang (SJ).