A new study suggests that the certain blood types might be connected to increased or decreased risk of having heart attack in response to high levels of air pollution.
A team of researchers analyzed data from Intermountain Healthcare patients seen between 1993 and 2007 and concluded that a variant ABO gene, which can be found in blood types A, B, ad AB, has been associated with elevated risk of heart attack during periods of significant air pollution. People with blood type O demonstrated lower risk.
Clinical epidemiologist Benjamin Horne from the Intermountain Medical Center Heart Institute in Salt Lake City, US, explains: “In the information, we provide to our patients about pollution, we try to stress that they can do something about it to reduce their risks. Stay indoors out of pollution. Exercise indoors. And make sure they’re compliant with taking their heart medication to reduce their risk.”
A new research from China suggests that breathing polluted air can cause stress hormones to spike.
A team of researchers from Fudan University in Shanghai exposed 5 volunteer students to polluted air for 12 days. The scientists specifically looked at the health effects of particulate matter (PM), small particles less than 2.5 mm in diameter, from industrial sources. These particles are inhaled and become lodged in the lungs.
At the end of the study, students’ levels of stress hormones cortisol, cortisone, epinephrine, and norepinephrine increased with dirtier air, as well as their levels of blood sugar, amino acids, fatty acids, and lipids.
Dr. Robert D. Brook, a co-author of the study, of the University of Michigan in Ann Arbor says: “This evidence-based proof is needed to help provide clinical recommendations for the millions of people with heart diseases living in regions where the poor air quality is not likely to significantly improve over the upcoming decades.”
A team of researchers in their early study suggests that the particles of pollution can build up in blood vessels and increase the risk of developing heart disease.
The scientists believe that the reason can be that extremely small particles can penetrate the blood system.
To investigate this, the scientists from the University of Edinburgh, UK, and universities in the Netherlands studied nanoparticles of inert that believed to be too small to be removed by the natural body’s filter system in the nose and lungs.
They asked 14 volunteers to breathe in air containing these nanoparticles while working out for 2 hours. The day after, the researchers discovered the gold nanoparticles in the bloodstream of most participants.
A new study, published in the journal Translational Psychiatry, suggests that air pollution may cause not only a lung disease but also increase the risk of Alzheimer’s disease.
For their study, a team of researchers from the University of Southern California (USC) collected samples of air particles with the help of technology specially developed by the university engineers. This technology is able to convert air of typical urban area to the air of heavily polluted cities, for instance, Beijing. The scientists utilized this technology to expose female mice to air pollution for 15 weeks. The mice had 60% more amyloid plaque, the clusters of a protein associated with the condition.
Study co-senior author Caleb Finch, the University of Southern California’s (USC) Leonard Davis School of Gerontology, says: “Although the link between air pollution and Alzheimer’s disease is a new scientific frontier, we now have evidence that air pollution, like tobacco, is dangerous to the aging brain.”
The negative impact of polluted air is subjected to 92% of the inhabitants of the Earth, said WHO, presenting new interactive maps, whith marked areas inside of countries that have low air quality.
Previously, the WHO has not published enough details on air pollution separated for countries. The model was built on the basis of information received from the satellites and more than 3,000 land-based monitoring stations located in both rural and urban areas. Country indicators of air pollution were analyzed, taking into account population size and levels of air pollution, and using the grid in increments of about 10 km by 10 km.
Air pollution is responsible for about 3 million deaths each year, according to the WHO material. Moreover, indoor air pollution is also dangerous. In 2012, air pollution inside and outside the premises caused, estimated at about 6.5 million.deaths (11.6% of the total). About 90% of deaths related to air pollution are recorded in the low- and middle-income countries, with almost two out of three – in the South-East Asia and the Western Pacific.
Earlier the WHO estimated that due to air and soil pollution, chemicals, climate change, and UV radiation we have more than 100 different diseases and injuries. The organization stressed that non-communicable diseases (cardiovascular and respiratory diseases, cancer) accounted for two thirds of all deaths caused by a stay in an unhealthy environment.
The main sources of air pollution include inefficient modes of transport, burning fuel and garbage in households, coal-fired powerplants and the work of industrial enterprises. However, human activity – is not the only cause of air pollution. For example, it can be affected by dust storms, particularly in regions that are close to the deserts.