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Telomere length and mitochondrial DNA (mtDNA) content are markers of aging and aging-related diseases. There is inconclusive evidence concerning the mechanistic effects of airborne particulate matter (PM) exposure on biomolecular markers of ageing. The present study examines the association between short- and long-term PM exposure with telomere length and mtDNA content in elderly and investigates to what extend this association is mediated by expression of genes playing a role in the telomere-mitochondrial axis of aging.

Come winter, and the air quality in northern India begins to deteriorate.The smoke resulting from burning crop residues combined with vehicular emissions make the air we breathe deadly.

Come winter, and the air quality in northern India begins to deteriorate. A thick blanket of smog (mixture of smoke and fog) engulfs the National Capital Region which reduces visibility and gives a tough time to commuters.

Air pollution in cities is emerging as the major reason behind the rise in eye allergies and conjunctivitis in people of all ages, doctors say.

Air contaminated with pollutants such as ozone and tiny particles could cause the premature death of about 6.6 million people a year by 2050 if nothing is done to improve air quality, warns this study published in the journal Nature

The main objective of the air quality index (AQI) system is to interpret air quality in a standardized indicator to enable the public to understand the likely health and environmental impacts of air pollutant concentration levels monitored on any given day. The daily averaged concentration data of air pollutants of monitoring sites under the National Ambient Air Quality Monitoring Programme of Delhi were analysed for the period 2001–2010 using the AQI system.

The relationship between air borne particulate matter ≤10 μm (PM10) exposure and pregnancy-induced hypertension (PIH) is inconclusive. Few studies have been conducted, and fewer were conducted in areas with high levels of PM10.

Original Source

The Kathmandu Valley in South Asia is considered as one of the global "hot spots" in terms of urban air pollution. It is facing severe air quality problems as a result of rapid urbanization and land use change, socioeconomic transformation and high population growth.

Original Source

Three decades of rapid economic development is causing severe and widespread PM2.5 pollution in China. However, research on the health impacts of PM2.5 exposure has been hindered by limited historical PM2.5 concentration data. The researchers estimated ambient PM2.5 concentrations from 2004 to 2013 in China at 0.1 degree resolution using the latest satellite data and evaluated model performance with available ground observations.

Original Source

Epidemiological studies investigating the role of fine particulate matter (PM2.5; aerodynamic diameter <2.5 lm) in triggering acute coronary events, including out-of-hospital cardiac arrests and ischemic heart disease (IHD), during wildfires have been inconclusive. The researchers examined the associations of out-of-hospital cardiac arrests, IHD, acute myocardial infarction, and angina (hospital admissions and emergency department attendance) with PM2.5 concentrations during the 2006–2007 wildfires in Victoria, Australia, using a time-stratified case-crossover study design.