Prevalence of sensitization to the predatory mite Amblyseius cucumeris as a new occupational allergen in horticulture

Background: Protection against thrips, a common pest in bell pepper horticulture is effectively possible without pesticides by using the commercially available predatory mite Amblyzeius cucumeris (Ac). The prevalence of sensitization to Ac among exposed greenhouse employees and its clinical relevanc...

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Bibliographic Details
Published in:	Allergy (Copenhagen) Vol. 57; no. 7; pp. 614 - 619
Main Authors:	Giséle, C. M., Groenewoud, M. D., De G raaf in ′t Veld, C., Van Oorschot–van Nes, A. J., De J ong, N. W., Vermeulen, A. M., Van Toorenenbergen, A. W., Burdorf, A., De G root, H., Van Wijk, R. G.
Format:	Journal Article
Language:	English
Published:	Oxford, UK Munksgaard International Publishers 01-07-2002 Blackwell
Subjects:	Agricultural Workers' Diseases - diagnosis Agricultural Workers' Diseases - epidemiology Agricultural Workers' Diseases - etiology Allergens - immunology Allergic diseases Amblyzeius cucumeris Animals bell pepper Biological and medical sciences Capsicum Cross-Sectional Studies General aspects greenhouse employees horticulture Humans Hypersensitivity, Immediate - diagnosis Hypersensitivity, Immediate - epidemiology Hypersensitivity, Immediate - etiology Immunopathology Medical sciences Mites - classification Mites - immunology Nasal Provocation Tests occupational allergy Occupational Exposure predatory mite Prevalence Radioallergosorbent Test Rhinitis - diagnosis Rhinitis - epidemiology Rhinitis - etiology Surveys and Questionnaires Parasitiformes Human Immunopathology Allergy Radioallergosorbent test Prick test Horticulture Occupational exposure Arachnida Amblyseius cucumeris Acari Arthropoda Aeroallergen Invertebrata Phytoseiidae Gamasida Occupational medicine Allergen Skin test Provocation test
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Summary:	Background: Protection against thrips, a common pest in bell pepper horticulture is effectively possible without pesticides by using the commercially available predatory mite Amblyzeius cucumeris (Ac). The prevalence of sensitization to Ac among exposed greenhouse employees and its clinical relevance was studied. Methods: Four hundred and seventytwo employees were asked to fill in a questionnaire and were tested on location. Next to RAST, skin prick tests (SPTs) were performed with common inhalant allergens, the storage mite Tyrophagus putrescentiae (Tp) which serves as a temporary food source during the cultivation process and Ac. Furthermore, nasal challenge tests with Ac were carried out in 23 sensitized employees. Results: SPTs positive to Ac were found in 109 employees (23%). Work‐related symptoms were reported by 76.1%. Sensitization to Tp was found in 62 employees of whom 48 were also sensitized to Ac. Immunoglobulin (Ig)E‐mediated allergy to inhalant allergens appeared to be an important risk factor for sensitization to Ac. Employees with rhinitis symptoms showed a significantly higher response to all Ac doses during the nasal challenge test compared with employees without rhinitis symptoms. Conclusions: The predatory mite Ac is a new occupational allergen in horticulture which can cause an IgE‐mediated allergy in exposed employees. It is biologically active on the mucous membranes of the nose and therefore clinically relevant for the development of work‐related symptoms.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0105-4538 1398-9995
DOI:	10.1034/j.1398-9995.2002.203511.x