BACKGROUND: There are no previous population-based studies assessing the prevalence of Blomia tropicalis (BT). This investigation analyzes the prevalence of sensitization to BT and its contribution to asthma and related diseases among young adults in the Canary Islands. MATERIAL AND METHODS: From a random sample of 9506 adults, aged between 20 and 44, who had previously answered a short respiratory questionnaire, a further 20% random sample was drawn. All participants filled in an extensive questionnaire, and they underwent spirometry and bronchial hyperresponsiveness (BHR) test and skin testing to several allergens as well as the determination of total IgE and specific IgE. RESULTS: The prevalence of positive skin tests to BT was 13.8% (95% confidence interval [CI] 10.6-17.9%) and that of BT-specific IgE 17.9% (95% CI 14.2-24.5%). Sensitization to BT (positive skin tests or positive specific IgE) was 20.9% (95% CI 16.9-25.5%). Most of the subjects sensitized to BT were also sensitized to Dermatophagoides pteronissimus; however, only 7% displayed monosensitization to BT. Among subjects who exhibited BHR, sensitization to BT reached 46.7% (95% CI 32.7-60.9%), among those with asthma 50% (95% CI 26.8-73.2%), in subjects with rhinitis 37.2% (95% CI 28.1-47.6%), and in those suffering from dermatitis 25.9% (95% CI 18.7-34.5%). A strong association of BT sensitization with BHR and asthma before and after 15 years was found. CONCLUSION: The prevalence of sensitization to BT among young adults in the Canary Islands is high, and it displays a close relationship with allergic respiratory diseases and dermatitis.
BACKGROUND: There are no previous population-based studies assessing the prevalence of Blomia tropicalis (BT). This investigation analyzes the prevalence of sensitization to BT and its contribution to asthma and related diseases among young adults in the Canary Islands. MATERIAL AND METHODS: From a random sample of 9506 adults, aged between 20 and 44, who had previously answered a short respiratory questionnaire, a further 20% random sample was drawn. All participants filled in an extensive questionnaire, and they underwent spirometry and bronchial hyperresponsiveness (BHR) test and skin testing to several allergens as well as the determination of total IgE and specific IgE. RESULTS: The prevalence of positive skin tests to BT was 13.8% (95% confidence interval [CI] 10.6-17.9%) and that of BT-specific IgE 17.9% (95% CI 14.2-24.5%). Sensitization to BT (positive skin tests or positive specific IgE) was 20.9% (95% CI 16.9-25.5%). Most of the subjects sensitized to BT were also sensitized to Dermatophagoides pteronissimus; however, only 7% displayed monosensitization to BT. Among subjects who exhibited BHR, sensitization to BT reached 46.7% (95% CI 32.7-60.9%), among those with asthma 50% (95% CI 26.8-73.2%), in subjects with rhinitis 37.2% (95% CI 28.1-47.6%), and in those suffering from dermatitis 25.9% (95% CI 18.7-34.5%). A strong association of BT sensitization with BHR and asthma before and after 15 years was found. CONCLUSION: The prevalence of sensitization to BT among young adults in the Canary Islands is high, and it displays a close relationship with allergic respiratory diseases and dermatitis.
Authors: Eric Walter Pefura-Yone; André Pascal Kengne; Emmanuel Afane-Ze; Christopher Kuaban Journal: World Allergy Organ J Date: 2014-08-19 Impact factor: 4.084
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Authors: Désirée Larenas-Linnemann; Alexandra Michels; Hanna Dinger; Kijawasch Shah-Hosseini; Ralph Mösges; Alfredo Arias-Cruz; Marichuy Ambriz-Moreno; Martín Bedolla Barajas; Ruth Cerino Javier; María de la Luz Cid Del Prado; Manuel Alejandro Cruz Moreno; Roberto García Almaráz; Cecilia Y García-Cobas; Daniel A Garcia Imperial; Rosa Garcia Muñoz; Dante Hernández-Colín; Francisco J Linares-Zapien; Jorge A Luna-Pech; Juan J Matta-Campos; Norma Martinez Jiménez; Miguel A Medina-Ávalos; Alejandra Medina Hernández; Alberto Monteverde Maldonado; Doris N López; Luis J Pizano Nazara; Emmanuel Ramirez Sanchez; José D Ramos-López; Noel Rodríguez-Pérez; Pablo G Rodríguez-Ortiz Journal: Clin Transl Allergy Date: 2014-06-04 Impact factor: 5.871