Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Dust mite levels in Sydney are seasonal

27.11.2007
House dust mite (HDM) allergen levels in Sydney beds are determined by the season, with new research discovering fluctuations of such magnitude between summer and autumn levels they may be sufficient to influence asthma symptoms in sufferers.

A Sydney study involving over 500 children has found HDM allergen levels to be at their minimum in summer and increasing approximately 2-3 fold during late autumn.

This annual cycle was observed over seven years and partly determined by relative humidity. Results were measured using dust samples collected from the children’s beds on 13 occasions, and relative humidity and temperature were recorded.

Researcher Daniel Crisafulli, from the Woolcock Institute of Medical Research explains the study was part of the Childhood Prevention Asthma Study (CAPS) conducted between 1997 and 2004.

“Such fluctuations are probably unavoidable and should serve as a reminder that people with asthma should be monitoring the severity of their symptoms and implement their asthma action plans” he said.

“The results provide the most comprehensive set of observations to date on seasonal fluctuations of mite allergens in children’s beds with climate.

“There was some variation in the annual timing of peaks, depending on the preceding seasonal climate. Allergen peaks could also be correlated with humidity peaks two months earlier, as humidity has an effect on the mite population.

Mr Crisafulli points out that other factors such as viral infections are known to be important causes of severe asthma attacks and that the interaction between seasonal allergen levels and viruses will be examined in a future study.

Lucy Williams | EurekAlert!
Further information:
http://www.researchaustralia.com.au

More articles from Health and Medicine:

nachricht Researchers identify cause of hereditary skeletal muscle disorder
22.02.2017 | Klinikum der Universität München

nachricht Second cause of hidden hearing loss identified
20.02.2017 | Michigan Medicine - University of Michigan

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: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Microhotplates for a smart gas sensor

22.02.2017 | Power and Electrical Engineering

Scientists unlock ability to generate new sensory hair cells

22.02.2017 | Life Sciences

Prediction: More gas-giants will be found orbiting Sun-like stars

22.02.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>