[Gramineae pollen dispersal and pollinosis in the city of Hisai in Mie Prefecture. A 14-year study of gramineae pollen dispersal and cases of sensitization to gramineae experienced at an allergy clinic over a 15-year period].
(1) A study of Gramineae pollen dispersal was conducted in Hisai, Mie Prefecture from 1987 to 2000; Gramineae pollen counts did not increase, with an average of 133 during the 14 years. There was two or three peaks in the annual dispersal period, suggesting that symptoms in late May, late July to early August, and late September are important for diagnosis of Gramineae pollinosis in this region. (2) Changes in the frequencies of sensitization to Gramineae pollen and Gramineae pollinosis were studied in 756 allergy clinic patients with nasal allergies examined over a 15-year period from 1986 to 2000. Results for the frequency of sensitization every 5 years came to 7.9, 22.4, and 23.3% and that of Gramineae pollinosis were 4.8, 10.3, and 12.1%. Both frequencies tended to increase after 1990. Out of 135 patients with sensitization to Gramineae, 88.1% had multiple sensitization to Japanese cedar and 54.8% had sensitization to Japanese cedar as well as house dust or mites. Patients sensitized only to Gramineae accounted for 5.9% of total patients. About half of the patients with sensitization to Gramineae developed pollinosis. As the CAP RAST score increased, so did the increase of pollinosis.
Ito
Yukiko
Y
Department of Otorhinolaryngology, National Mie Chuo Hospital.
Kimura
Tetsuro
T
Miyamura
Tomotaka
T
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000393:Air Pollutants / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D006109:Poaceae; D011058:Pollen / Q000276:immunology*; D015995:Prevalence; D011852:Radioallergosorbent Test; D006255:Rhinitis, Allergic, Seasonal / Q000453:epidemiology* / Q000276:immunology; D012621:Seasons; D012737:Sex Factors; D013997:Time Factors
D000393:Air Pollutants