Sensitization to Domestic Mites in a Cold Temperate Region

Wickman, Magnus; Nordvall, S. L.; Pershagen, Göran; Korsgaard, J.; Johansen, Niels

doi:10.1164/ajrccm/148.1.58

Cited by 61 publications

(39 citation statements)

References 27 publications

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“…There are occasional findings of mite sensitization and high levels of mites in house dust in northern Sweden (30). Our finding of a low prevalence of mite sensitization in Vasterbotten was in agreement with Norrman et al's study from the same region (22).…”

Section: Discussionsupporting

confidence: 93%

Skin prick tests and specific IgE in adults from three different areas of Sweden

Plaschke¹,

Janson²,

Norrman³

et al. 1996

Allergy

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The aims of this part of the European Respiratory Health Survey were to estimate the prevalence of atopic sensitization to inhalant allergens among adults in three different areas of Sweden and to investigate the association between sensitization and certain risk factors. Randomly selected subjects aged 20-46 years from Goteborg, Uppsala, and Vasterbotten were investigated with the skin prick test (SPT), analyses for specific IgE antibodies in serum (specific IgE) and total serum immunoglobulin E (total IgE), and a questionnaire. SPT was performed in 1572 subjects and analyses of specific IgE in 1470. One or more positive SPT were found in 35.6% and one or more positive specific IgE in 31.7% -approximately the same values in all three areas. Birch, grass, cat, and dog were the most frequent sensitizing agents and occurred at similar prevalences, i.e., around 1S%, in all areas. The SPT to mite was positive in 14.1% in Goteborg, 7.4% in Uppsala, and 7.9% in Vasterbotten. A positive SPT to pellitory of the wall (Purietarin), not described previously in Sweden, was found in 3.4% in Goteborg. Living in Goteborg was independently associated with a higher risk of a positive SPT to mite and Purieturiu. Heredity, male sex, and low age were independently associated with atopy. Birth in the Scandinavian countries was independently associated with sensitization to cat, whereas birth in other countries was associated with sensitization to mite. The overall prevalence of atopy was similar in the three Swedish areas, but the sensitizing allergens varied. There is an indication that sensitization is increasing in the population, as low age was associated with sensitization. Sensitization to cat, but not to mite, appears to be particularly important 1 in persons born in the Scandinavian countries.Atopy, the tendency to develop IgE antibodies to common allergens, is associated with asthma, allergic rhinoconjunctivitis, and eczema. Atopy is in part due to genetic susceptibility (1). Studies from several countries (2-9) reveal an increasing prevalence of atopic diseases, indicating that exposure to environmental factors plays an important role. Furthermore, some studies reveal a geographic variation in the occurrence of asthma (10-12). Aberg (11) and Aberg et al. (12) found higher prevalences in the north of Sweden than in the south. It is not known whether these regional differences are caused by a difference in the prevalence of atopic sensitization itself, or by an increasing and geographically variable susceptibility in sensitized persons to develop clinical disease. P.

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Section: Discussionsupporting

confidence: 93%

Skin prick tests and specific IgE in adults from three different areas of Sweden

Plaschke¹,

Janson²,

Norrman³

et al. 1996

Allergy

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“…Such houses do not conform to architectural regulations and are constructed in the periphery of cities, with poor living conditions such as lack of water, gas and sewerage systems from the municipal network. Previous studies have confirmed that houses with basement floors that have higher frequency of house dust mites are associated with respiratory symptoms when compared with apartments [17,18]. The present study supported the argument that respiratory allergic diseases and respiratory symptoms could be increased among people living in shanty-type houses as compared with those living in apartments.…”

Section: Discussionsupporting

confidence: 89%

Prevalence and Risk Factors of Allergies in Turkey (PARFAIT): results of a multicentre cross-sectional study in adults

Kurt¹,

Metintaş²,

Başyiğit³

et al. 2009

European Respiratory Journal

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The Prevalence and Risk Factors of Allergies in Turkey (PARFAIT) study was planned to evaluate the prevalence of and risk factors for asthma and allergic diseases in Turkey.The present analysis used data from 25,843 parents of primary school children, obtained from a cross-sectional questionnaire-based study.A total of 25,843 questionnaires from 14 centres were evaluated. In rural areas, the prevalences asthma, wheezing, allergic rhinitis and eczema in males were: 8.5% (95% confidence interval (CI) 7.9-9.1%), 13.5% (95% CI 12.8-14.2%), 17.5% (95% CI 16.7-18.2%) and 10.8% (95% CI 10.2-11.4%), respectively; and in females were: 11.2% (95% CI 10.9-11.8%), 14.7% (95% CI 14.3-15.1%), 21.2% (95% CI 20.4-22.0%) and 13.1% (95% CI 12.4-13.8%), respectively. In urban areas, the corresponding prevalences in males were: 6.2% (95% CI 5.8-6.6%), 10.8% (95% CI 10.3-11.3%), 11.7% (95% CI 11.4-12.0%) and 6.6% (95% CI 6.2-7.0%), respectively; and in females were: 7.5 % (95% CI 7.9-7.1%), 12.0% (95% CI 11.7-12.3%), 17.0% (95% CI 16.4-17.6%) and 7.3% (95% CI 6.9-7.7%), respectively. Having an atopic first-degree relative or any other atopic diseases had significant effects on the prevalence of allergic diseases. Housing conditions, such as living in a shanty-type house, visible moulds at home and use of wood or biomass as heating or cooking material were associated with one or more allergic diseases.Although genetic susceptibility is strongly associated, country-and population-based environmental factors may contribute to increased prevalence rates of allergic diseases.

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“…Although previous studies have not obtained samples from basements, the low floor levels of houses (ie, ground or first floors) have been shown to have significantly higher concentrations of Der f 1 and Der p 1 allergens than the higher floor levels. 19,22,37 Thus, it appears that basements are notable reservoirs of HDM allergens for dogs and are also unrecognized reservoirs of HDM allergens for humans.…”

Section: Discussionmentioning

confidence: 99%

Quantitation of house dust mites and house dust mite allergens in the microenvironment of dogs

Randall

Hillier²,

Cole³

et al. 2003

ajvr

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Sensitization to Domestic Mites in a Cold Temperate Region

Cited by 61 publications

References 27 publications

Skin prick tests and specific IgE in adults from three different areas of Sweden

Skin prick tests and specific IgE in adults from three different areas of Sweden

Prevalence and Risk Factors of Allergies in Turkey (PARFAIT): results of a multicentre cross-sectional study in adults

Quantitation of house dust mites and house dust mite allergens in the microenvironment of dogs

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