ObjectiveTo explore the distribution of mite allergens in chronic obstructive pulmonary disease (COPD) patients and the role of allergen in acute exacerbation of COPD (AECOPD) in Hainan Province. MethodsWe selected 65 COPD patients, 58 other patients without allergic disease and 34 healthy subjects as the control group from January to June in 2009. All subjects underwent skin prick test (SPT) to make statistical analysis. We observed the COPD patients for 3 years to analyze the correlation between SPT positive incidence and frequency of acute exacerbation. ResultsThe SPT positive incidence was higher in the COPD group (P<0.05). The most frequent allergen in COPD group was Blomia Tropicalis. But the SPT positive incidence and frequency of acute exacerbation was not obvious correlated (P>0.05). ConclusionThe exogenous allergens may participate in the pathogenesis of COPD. Blomia Tropicalis may be an important allergen of COPD patients in Hainan Province other than Dermatophagoides Pteronyssinus and Dermatophagoides Farinae. But allergy does not play a role in acute exacerbation of COPD.
ObjectiveTo investigate the common inhalant allergens causing allergic rhinitis in underage patients, and provide references for clinical prevention of allergic rhinitis. MethodsUnderage patients with allergic rhinitis admitted to our hospital between January 2010 and June 2013 were screened and skin prick test (SPT) was applied to investigate the response intensity to 22 kinds of common inhalant allergens and analyze the correlation of the positive rates and grades of allergens with age and sex. ResultsA total of 402 patients were included, and 77.6% (312/402) of them reported positive reaction of SPT; and the top five allergens were dust mites (242/402, 60.2%), house dust (235/402, 58.5%), housefly (142/402, 35.3%), spring pollen Ⅲ (133/402, 33.1%) and mulberry silk (121/402, 30.1%), respectively. Compared with patients whose age was younger than 5 years, both the positive rates and grades of SPT were significantly higher in patients above 5 years old. Additionally, the higher positive rates and grades of SPT were also observed much more in male patients than female patients. ConclusionThe most common inhalant allergens causing allergic rhinitis in underage patients are dust mites and house dust. And the SPT response intensity of inhalant allergens can be affected by age and gender.