House dust mites ( HDM , or just dust mites ) are a large number of mites found in relation to dust in residences.
Main species identified as:
- Dermatophagoides farinae (American house dust mites)
- Dermatophagoides Pier
- Dermatophagoides pteronyssinus (European house dust mites)
- Euroglyphus maynei (Mayne house dust mite)
Video House dust mite
Biology
Taxonomy
Dust mites are cosmopolitan members of the Pyroglyphidae mite family.
Characteristics
House dust mites, because of their very small size and transparent body, are barely visible to the naked eye. House dust mites measuring 0.2-0.3 millimeters (0.008-0.012 inches) in length. For accurate identification, a person needs at least 10ÃÆ'â € "enlargement. The body of the house dust mite has a striated cuticle.
Diet
They eat skin flakes from humans, and animals, and on some mushrooms. Predator
Predator dust mites are other allergy mites (Cheyletiella), Silverfish and pseudoscorpions.
Reproduction
The average life cycle for male dust mites is 10-19 days. House mated dust mites can last up to 70 days, putting 60 to 100 eggs in the last 5 weeks of life. Within 10 weeks of life, house dust mites will produce about 2,000 dirt particles and even some larger dust particles enclosed in the enzyme.
Maps House dust mite
Health issues
Allergic
House dust mites
Intestinal mites contain strong digestive enzymes (especially Peptidase 1) that persist in their feces and are the main inducers of allergic reactions such as wheezing. Exoskeleton mites can also contribute to allergic reactions. Unlike scabies mites or skin mites, house dust mites do not hide under the skin and are not parasites.
Severe dust mite infections at home have been associated with atopic dermatitis and epidermal barrier damage has been documented.
House dust mites are associated with allergic rhinitis and asthma, as well as allergic conjunctivitis. Efforts to remove these mites from the environment have not been proven effective. Immunotherapy can be beneficial to those affected. Subcutaneous injections have better evidence than under the dose of the tongue. Topical steroids such as nasal sprays or inhalation may be used.
Oral anaphylaxis mite
Dermatophagoides spp. can cause anaphylaxis mites (aka pancake syndrome) when found in flour.
Control techniques of dust mites
Bedsheet
Replacement of weekly sheets reduces the risk of exposure to dust mites.
Cotton that is not covered with a mattress blanket is very likely to be colonized by bacteria and molds; they should be cleaned regularly (at least every 2-3 months).
Dust mite eggs are frozen tolerant (-70 ° C for 30 minutes); Hatching can usually be prevented by displaying the cloth to:
- Direct sunlight for 3 hours or
- Dry/wet heat 60 and 70Ã, Â ° C for at least 30 min.
- The dust muffins are submerged in water.
Anti-dust bed sheets can reduce exposure by up to 20%.
The good properties of the anti-mite fabric have been identified as:
- Number of repeat more than 246.
- Pore size between 2-10 microns.
- The allergen is impenetrable & gt; 99%.
- The dust leakage is less than 4%.
- Breathability between 2-6 cm3/sec/cm2.
Indoor climate
A practical way to control dust mites and allergens is to maintain a relative humidity of less than 45% with dehumidifiers during the summer, and room temperature 22 ° C/71.6 ° F.
References
External links
- House of the dust mites at the University of Florida/Institute of Food and Agricultural Science Creative Beings website
- Dust mite Allergy at the website of the Asthma and Allergy of the American Foundation
Source of the article : Wikipedia
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