Document Detail

Pollen augments the influence of desert dust on symptoms of adult asthma patients.
MedLine Citation:
PMID:  22113159     Owner:  NLM     Status:  In-Data-Review    
Background: East Asian desert dust storms that occur during mainly spring are called Asian dust storms (ADS). Our objective was to study the association of pollen and ADS with symptoms of adult asthma patients in Japan. Methods: We designed a telephone survey to investigate the upper and lower respiratory, ocular, and skin symptoms of asthma patients during ADS in February, March, and December on 2009. Peak expiratory flow (PEF) was also measured from February to May. Results: We surveyed 106 patients in February, 101 patients in March, and 103 patients in December. In February and March, Japanese cedar and/or cypress pollen was also in the atmosphere during ADS, but no pollen was identified during December survey. Worsening of upper or lower respiratory, ocular, or skin symptoms was noted by 20.8% of patients in February, 33.7% in March, and 16.5% in December. Worsening of symptoms was significantly more common in March than in February or December. Two patients needed emergency treatment for exacerbation during ADS in March, but no patient needed hospitalization in any period. There was no significant difference of the daily morning PEF/personal best PEF ratio between ADS days and control days. However, in patients with worsening of upper and/or lower respiratory tract symptoms, the daily morning PEF/personal best ratio was significantly associated with the atmospheric level of particulate matter, but not with levels of pollen or other air pollutants. Conclusions: Pollen augmented symptoms in adult asthma patients, but ADS on its own also were able to aggravate symptoms and pulmonary function.
Masanari Watanabe; Tadashi Igishi; Naoto Burioka; Akira Yamasaki; Jun Kurai; Hiromi Takeuchi; Takanori Sako; Atsushi Yoshida; Kazuhiko Yoneda; Yasushi Fukuoka; Masaki Nakamoto; Yasuyuki Hasegawa; Hiroki Chikumi; Shingo Matsumoto; Sayaka Minato; Kazunori Horasaki; Eiji Shimizu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Allergology international : official journal of the Japanese Society of Allergology     Volume:  60     ISSN:  1440-1592     ISO Abbreviation:  Allergol Int     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9616296     Medline TA:  Allergol Int     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  517-24     Citation Subset:  IM    
Department of Respirology and Rheumatology, Faculty of Medicine, Tottori University, Tottori, Japan.
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