It is important, especially for people with eczema, to protect themselves from such microscopic bugs and filth, researchers note in an article in the latest issue of the Journal of Investigative Dermatology.

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In the study, the researchers disrupted the skin barrier function of a group of volunteers by repeatedly sticking cellophane tape on a part of their forearm and then stripping it off. They were then exposed to roach allergens and dust mites.

Delays skin repair
These particles were later found to have triggered a receptor in the skin, known as PAR-2, which delayed the skin repair process.

"The skin barrier function is already damaged in eczema patients and it has to repair itself. But allergens like dust mite and cockroach allergens will delay the repair function," said Jeong Se Kyoo, senior researcher at Neopharm Co. Ltd.

"Then more allergens will penetrate the skin, it's a vicious cycle," he said in a telephone interview.

Eczema is a chronic skin condition characterised by dry patches of very itchy skin. The most common form, atopic dermatitis, affects between 10 and 20 percent of the world's population at some point during childhood. – (Reuters Health)

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Skin Centre

February 2008
 

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