- Food industry
Acarus farris, Acarus siro, Blomia Kulagini, Dermatophagoides pteronyssinus, Euroglyphus Maynei, Glycyphagus domesticus, Leptidoglyphus destructor, Tyrophagus putrescentiae.
Incidence: dependent on co-factors: smoking, atopy and a predisposition to bronchial hyperreactivity.
Non-atopic subjects may also be affected.
Many subjects who are sensitised to storage mites also show sensitivity to Dematophagoides pteronyssimus.
The degree of humidity in the cereal before storage favours multiplication of mites: proper ventilation is therefore important. In the food industry, certain types of mites (storage mites) may contaminate foodstuffs : cheese (Acarus Siro, Blomia Kulagini), chorizo (Euroglyphus Maynei), garlic and Ham (Tyrophagus Putrescentiae and Acarus Siro). The response to TDI is regulated by the MHC class II loci DQA1 and DQB1.
Rhinitis and asthma symptoms are concomitant and persist after work has stopped.
Skin prick test for various species of mite for which extracts are commercially available.
Immunological dosage: RAST/CAP RAST.
Bronchial provocation tests (in Hospital) reveal both immediate and delayed reactions.
Recent studies on sputum induced during bronchial provocation tests have shown that measurement of ECP and Tryptase may act as additional diagnostic factors.