Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Traffic pollution worsens symptoms in asthmatic children

14.11.2008
Traffic pollution, especially in cities, adversely affects respiratory health in children with asthma. A study published in BioMed Central’s open access journal Respiratory Research has found that in this vulnerable group, worsening of respiratory symptoms requiring recurrent additional treatment.

A Mexican research team led by Dr Isabelle Romieu of the Institute Nacional de Sauld Publica, correlated pollutants associated with exacerbation of respiratory symptoms in asthmatic children. Earlier studies suggest that traffic pollution, and diesel particles in particular, may have a greater effect on respiratory health than other pollutants. This is significant as a large proportion of pollution in cities originates from motor vehicles. At present, no studies have clearly linked different types of vehicular traffic exhaust to respiratory health of either asthmatic or healthy children.

147 asthmatic children and 50 non-asthmatic children, between the ages of 6 and 14, were recruited through a paediatric hospital in Mexico City. Parents kept a daily record of coughing and wheezing experienced by their children, as well as medication usage. Atmospheric levels of the pollutants ozone, nitrogen dioxide and diesel particles were recorded in Mexico City during the study. The amount and type of traffic in areas inhabited by the volunteers was also recorded in order to evaluate whether diesel-fuelled vehicles had a greater impact upon respiratory health than pollution from other vehicles.

In asthmatic children, coughing, wheezing and medication usage was associated with increased levels of atmospheric pollutants. In healthy volunteers, increased coughing was only seen with higher levels of nitrogen dioxide. Children living in areas with high levels of traffic more often experienced worsening of asthma symptoms and greater use of medication. Small buses for public transport running on petrol/natural gas, and larger buses and trucks running on diesel, were more strongly associated with worsening of symptoms.

Although oxidative stress has been shown to be a major underlying feature of the toxic effect of air pollutants, there is still a need for a better understanding of the actual mechanisms by which pollutants cause exacerbation of respiratory symptoms. Romieu points out that, all types of traffic exhaust have an adverse effect on children respiratory health and that given the proximity of many schools to roads with heavy traffic, “these results have significant implications for public health policy within cities in Mexico and the rest of the world”.

Graeme Baldwin | alfa
Further information:
http://www.biomedcentral.com/

More articles from Health and Medicine:

nachricht A promising target for kidney fibrosis
21.04.2017 | Brigham and Women's Hospital

nachricht Stem cell transplants: activating signal paths may protect from graft-versus-host disease
20.04.2017 | Technische Universität München

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

Im Focus: Quantum-physical Model System

Computer-assisted methods aid Heidelberg physicists in reproducing experiment with ultracold atoms

Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment...

Im Focus: Glacier bacteria’s contribution to carbon cycling

Glaciers might seem rather inhospitable environments. However, they are home to a diverse and vibrant microbial community. It’s becoming increasingly clear that they play a bigger role in the carbon cycle than previously thought.

A new study, now published in the journal Nature Geoscience, shows how microbial communities in melting glaciers contribute to the Earth’s carbon cycle, a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

New quantum liquid crystals may play role in future of computers

21.04.2017 | Physics and Astronomy

A promising target for kidney fibrosis

21.04.2017 | Health and Medicine

Light rays from a supernova bent by the curvature of space-time around a galaxy

21.04.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>