scholarly journals Burden of diseases in fifty-three urban agglomerations of India due to particulate matter (PM2.5) exposure

2021 ◽  
Author(s):  
Pritanjali Shende ◽  
Asif Qureshi
Keyword(s):  
Particulate Matter ◽  
Urban Agglomerations ◽  
Pm2.5 Exposure ◽  
Burden Of Diseases

scholarly journals The Combined Effects of Fine Particulate Matter and Temperature on Preterm Birth in Seoul, 2010–2016

2021 ◽  
Vol 18 (4) ◽  
pp. 1463
Author(s):  
Youngrin Kwag ◽  
Min-ho Kim ◽  
Shinhee Ye ◽  
Jongmin Oh ◽  
Gyeyoon Yim ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Preterm Birth ◽  
Pregnant Women ◽  
Low Temperatures ◽  
Fine Particulate Matter ◽  
Temperature Data ◽  
Fine Particulate ◽  
The Mean ◽  
Pm2.5 Exposure ◽  
Pm2.5 Concentration

Background: Preterm birth contributes to the morbidity and mortality of newborns and infants. Recent studies have shown that maternal exposure to particulate matter and extreme temperatures results in immune dysfunction, which can induce preterm birth. This study aimed to evaluate the association between fine particulate matter (PM2.5) exposure, temperature, and preterm birth in Seoul, Republic of Korea. Methods: We used 2010–2016 birth data from Seoul, obtained from the Korea National Statistical Office Microdata. PM2.5 concentration data from Seoul were generated through the Community Multiscale Air Quality (CMAQ) model. Seoul temperature data were collected from the Korea Meteorological Administration (KMA). The exposure period of PM2.5 and temperature were divided into the first (TR1), second (TR2), and third (TR3) trimesters of pregnancy. The mean PM2.5 concentration was used in units of ×10 µg/m3 and the mean temperature was divided into four categories based on quartiles. Logistic regression analyses were performed to evaluate the association between PM2.5 exposure and preterm birth, as well as the combined effects of PM2.5 exposure and temperature on preterm birth. Result: In a model that includes three trimesters of PM2.5 and temperature data as exposures, which assumes an interaction between PM2.5 and temperature in each trimester, the risk of preterm birth was positively associated with TR1 PM2.5 exposure among pregnant women exposed to relatively low mean temperatures (<3.4 °C) during TR1 (OR 1.134, 95% CI 1.061–1.213, p < 0.001). Conclusions: When we assumed the interaction between PM2.5 exposure and temperature exposure, PM2.5 exposure during TR1 increased the risk of preterm birth among pregnant women exposed to low temperatures during TR1. Pregnant women should be aware of the risk associated with combined exposure to particulate matter and low temperatures during TR1 to prevent preterm birth.

scholarly journals In Utero Exposure to Fine Particulate Matter Causes Hypertension Due to Impaired Renal Dopamine D1 Receptor in Offspring

2018 ◽  
Vol 46 (1) ◽  
pp. 148-159 ◽  
Author(s):  
Zhengmeng Ye ◽  
Xi Lu ◽  
Yi Deng ◽  
Xinquan Wang ◽  
Shuo Zheng ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Particulate Matter ◽  
Sodium Excretion ◽  
Fine Particulate Matter ◽  
In Utero ◽  
D1 Receptor ◽  
In Utero Exposure ◽  
Fine Particulate ◽  
Pm2.5 Exposure ◽  
Renal Dopamine

Background/Aims: Adverse environment in utero can modulate adult phenotypes including blood pressure. Fine particulate matter (PM2.5) exposure in utero causes hypertension in the offspring, but the exact mechanisms are not clear. Renal dopamine D1 receptor (D1R), regulated by G protein-coupled receptor kinase type 4 (GRK4), plays an important role in the regulation of renal sodium transport and blood pressure. In this present study, we determined if renal D1R dysfunction is involved in PM2.5–induced hypertension in the offspring. Methods: Pregnant Sprague–Dawley rats were given an oropharyngeal drip of PM2.5 (1.0 mg/kg) at gestation day 8, 10, and 12. The blood pressure, 24-hour sodium excretion, and urine volume were measured in the offspring. The expression levels of GRK4 and D1R were determined by immunoblotting. The phosphorylation of D1R was investigated using immunoprecipitation. Plasma malondialdehyde and superoxide dismutase levels were also measured in the offspring. Results: As compared with saline-treated dams, offspring of PM2.5-treated dams had increased blood pressure, impaired sodium excretion, and reduced D1R-mediated natriuresis and diuresis, accompanied by decreased renal D1R expression and GRK4 expression. The impaired renal D1R function and increased GRK4 expression could be caused by increased reactive oxidative stress (ROS) induced by PM2.5 exposure. Administration of tempol, a redox-cycling nitroxide, for 4 weeks in the offspring of PM2.5-treated dam normalized the decreased renal D1R expression and increased renal D1R phosphorylation and GRK4 expression. Furthermore, tempol normalized the increased renal expression of c-Myc, a transcription factor that regulates GRK4 expression. Conclusions: In utero exposure to PM2.5 increases ROS and GRK4 expression, impairs D1R-mediated sodium excretion, and increases blood pressure in the offspring. These studies suggest that normalization of D1R function may be a target for the prevention and treatment of the hypertension in offspring of mothers exposed to PM2.5 during pregnancy.

Ambient Fine Particulate Matter and Preterm Birth in California: Identification of Critical Exposure Windows

2019 ◽  
Vol 188 (9) ◽  
pp. 1608-1615 ◽  
Author(s):  
Paige Sheridan ◽  
Sindana Ilango ◽  
Tim A Bruckner ◽  
Qiong Wang ◽  
Rupa Basu ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Preterm Birth ◽  
Proportional Hazards ◽  
Fine Particulate Matter ◽  
Cox Proportional Hazards ◽  
Distributed Lag ◽  
Fine Particulate ◽  
Cox Proportional Hazards Models ◽  
Pm2.5 Exposure ◽  
Exposure Windows

Abstract Exposure to ambient fine particulate matter (particulate matter ≤2.5 μm in aerodynamic diameter (PM2.5)) during pregnancy is associated with preterm birth (PTB), a leading cause of infant morbidity and mortality. Results from studies attempting to identify etiologically relevant exposure periods of vulnerability have been inconsistent, possibly because of failure to consider the time-to-event nature of the outcome and lagged exposure effects of PM2.5. In this study, we aimed to identify critical exposure windows for weekly PM2.5 exposure and PTB in California using California birth cohort data from 2005–2010. Associations were assessed using distributed-lag Cox proportional hazards models. We assessed effect-measure modification by race/ethnicity by calculating the weekly relative excess risk due to interaction. For a 10-μg/m3 increase in PM2.5 exposure over the entire period of gestation, PTB risk increased by 11% (hazard ratio = 1.11, 95% confidence interval: 1.09, 1.14). Gestational weeks 17–24 and 36 were associated with increased vulnerability to PM2.5 exposure. We find that non-Hispanic black mothers may be more susceptible to effects of PM2.5 exposure than non-Hispanic white mothers, particularly at the end of pregnancy. These findings extend our knowledge about the existence of specific exposure periods during pregnancy that have the greatest impact on preterm birth.

scholarly journals Cardiotoxicity and Mechanism of Particulate Matter 2.5 (PM2.5) Exposure in Offspring Rats During Pregnancy

2017 ◽  
Vol 23 ◽  
pp. 3890-3896 ◽  
Author(s):  
Hongling Wang ◽  
Xiangwen Peng ◽  
Fenglin Cao ◽  
Ying Wang ◽  
Huijie Shi ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Pm2.5 Exposure ◽  
Particulate Matter 2.5

scholarly journals Identifying critical windows of prenatal particulate matter (PM2.5) exposure and early childhood blood pressure

2020 ◽  
Vol 182 ◽  
pp. 109073 ◽  
Author(s):  
Maria José Rosa ◽  
Gleicy Macedo Hair ◽  
Allan C. Just ◽  
Itai Kloog ◽  
Katherine Svensson ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Early Childhood ◽  
Particulate Matter ◽  
Pm2.5 Exposure

Effects of the ambient fine particulate matter (PM2.5) exposure on urinary metabolic profiles in rats using UPLC-Q-TOF-MS

2019 ◽  
Vol 30 (1) ◽  
pp. 90-94 ◽  
Author(s):  
Lin Zhang ◽  
Tengfei Xu ◽  
Zifeng Pi ◽  
Meizhu Zheng ◽  
Fengrui Song ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Fine Particulate Matter ◽  
Metabolic Profiles ◽  
Fine Particulate ◽  
Pm2.5 Exposure ◽  
Tof Ms

scholarly journals A city-level analysis of air pollution, climate and COVID-19 early spread during the Spanish lockdown

2020 ◽  
Author(s):  
Alvaro Briz-Redon ◽  
Carolina Belenguer-Sapina ◽  
Angel Serrano-Aroca
Keyword(s):  
Air Pollution ◽  
Particulate Matter ◽  
Environmental Conditions ◽  
Fine Particulate Matter ◽  
Epidemic Curve ◽  
Fine Particulate ◽  
The World ◽  
Pm2.5 Exposure ◽  
Level Analysis ◽  
Good Agreement

The COVID-19 outbreak has escalated into the worse pandemic of the present century. The fast spread of the new SARS-CoV-2 coronavirus has caused devastating health and economic crises all over the world, with Spain being one of the worst affected countries in terms of confirmed COVID-19 cases and deaths per inhabitant. In this situation, the Spanish Government declared the lockdown of the country. The variations of air pollution in terms of fine particulate matter (PM2.5) levels in seven cities of Spain are analyzed here considering the effect of meteorology during the national lockdown. The possible associations of PM2.5 pollution and climate with COVID-19 accumulated cases were also analyzed. While the epidemic curve was flattened, the results of the analysis show that the 4-week Spanish lockdown significantly reduced the PM2.5 levels in only one of the cities despite the drastically reduced human activity in good agreement with our previous study of changes in air quality in terms of CO, SO2, PM10, O3 and NO2 levels. Furthermore, no associations between either PM2.5 exposure or environmental conditions and COVID-19 transmission were found during the early spread of the pandemic.

scholarly journals Association between Post-Diagnosis Particulate Matter Exposure among 5-Year Cancer Survivors and Cardiovascular Disease Risk in Three Metropolitan Areas from South Korea

2020 ◽  
Vol 17 (8) ◽  
pp. 2841
Author(s):  
Seulggie Choi ◽  
Kyae Hyung Kim ◽  
Kyuwoong Kim ◽  
Jooyoung Chang ◽  
Sung Min Kim ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Particulate Matter ◽  
Cancer Survivors ◽  
Disease Risk ◽  
Cardiovascular Disease Risk ◽  
Cox Proportional Hazards ◽  
Cvd Risk ◽  
Increased Risk ◽  
Yearly Average ◽  
Pm2.5 Exposure

Cancer survivors are at an increased risk for cardiovascular disease (CVD). However, the association between particulate matter (PM) and CVD risk among cancer survivors (alive >5 years since diagnosis) is unclear. We investigated the risk of CVD among 40,899 cancer survivors within the Korean National Health Insurance Service database. Exposure to PM was determined by assessing yearly average PM levels obtained from the Air Korea database from 2008 to 2011. PMs with sizes <2.5 (PM2.5), <10 (PM10), or 2.5–10 (PM2.5–10) μm in diameter were compared, with each PM level exposure further divided into quintiles. Patients were followed up from January 2012 to date of CVD event, death, or December 2017, whichever came earliest. Adjusted hazard ratios (aHRs) and 95% confidence intervals (CIs) for CVD were calculated using Cox proportional hazards regression by PM exposure levels. Compared with cancer survivors in the lowest quintile of PM2.5 exposure, those within the highest quintile had a greater risk for CVD (aHR 1.31, 95% CI 1.07–1.59). Conversely, increasing PM10 and PM2.5–10 levels were not associated with increased CVD risk (p for trend 0.078 and 0.361, respectively). Cancer survivors who reduce PM2.5 exposure may benefit from lower risk of developing CVD.

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