| 1 | Effects of environmental factors on sulfamethoxazole photodegradation under simulated sunlight irradiation: Kinetics and mechanism显示文摘To advance the knowledge of the environmental fate of sulfamethoxazole(SMX),we systematically investigated the effects of natural water constituents and synthetic substances(i.e.,TiO2 nanoparticles(nTiO2) and Ti-doped β-Bi2O3(NTB)) on the photodegradation kinetics of SMX under xenon lamp irradiation.The photolysis of SMX in aqueous solution followed first-order kinetics.Our results showed that higher concentrations of SMX,fulvic acid,suspended sediments,NTB and higher pH value decreased the photodegradation rates of SMX,whereas H2O2 improved the SMX photodegradation.TiO2 nanoparticles had a dual effect on photodegradation due to their photocatalytic activity and photoabsorption of photons.No intermediates more toxic toward Vibrio fischeri than SMX were produced after direct photolysis and photocatalytic degradation for 3 hr.The photolysis of SMX involved three pathways:hydroxylation,cleavage of the sulfonamide bond,and fragmentation of the isoxazole ring.This study lays the groundwork for a better understanding of the environmental fate of SMX. | Junfeng Niu Lilan Zhang Yang Li Jinbo Zhao Sidan Lv Keqing Xiao | 2013 | Journal of Environmental Sciences2013，25，6： | 14 |
| 2 | SARS-CoV-2 infection aggravates chronic comorbidities of cardiovascular diseases and diabetes in mice显示文摘Background:Cardiovascular diseases(CVDs)and diabetes mellitus(DM)are top two chronic comorbidities that increase the severity and mortality of COVID-19.However,how SARS-CoV-2 alters the progression of chronic diseases remain unclear.Methods:We used adenovirus to deliver h-ACE2 to lung to enable SARS-CoV-2 infection in mice.SARS-CoV-2’s impacts on pathogenesis of chronic diseases were studied through histopathological,virologic and molecular biology analysis.Results:Pre-existing CVDs resulted in viral invasion,ROS elevation and activation of apoptosis pathways contribute myocardial injury during SARS-CoV-2 infection.Viral infection increased fasting blood glucose and reduced insulin response in DM model.Bone mineral density decreased shortly after infection,which associated with impaired PI3K/AKT/mTOR signaling.Conclusion:We established mouse models mimicked the complex pathological symptoms of COVID-19 patients with chronic diseases.Pre-existing diseases could impair the inflammatory responses to SARS-CoV-2 infection,which further aggravated the pre-existing diseases.This work provided valuable information to better understand the interplay between the primary diseases and SARS-CoV-2 infection. | Yuanwu Ma Dan Lu Linlin Bao Yajin Qu Jiangning Liu Xiaolong Qi Lei Yu Xu Zhang Feifei Qi Qi Lv Yunpeng Liu Xudong Shi Caixian Sun Jing Li Jie Wang Yunlin Han Kai Gao Wei Dong Ning Liu Shan Gao Jing Xue Qiang Wei Sidan Pan Hong Gao Lianfeng Zhang Chuan Qin | 2021 | Animal Models and Experimental Medicine2021，4，1： | 3 |
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