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 Purdue cancer identity technology makes it easier to find a tumor's 'address'
16.11.2018 | Purdue University

nachricht Microgel powder fights infection and helps wounds heal
14.11.2018 | Michigan Technological University

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: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

Purdue cancer identity technology makes it easier to find a tumor's 'address'

16.11.2018 | Health and Medicine

Good preparation is half the digestion

16.11.2018 | Life Sciences

Microscope measures muscle weakness

16.11.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>