A 13-year Study of Japanese Cedar Pollinosis in Japanese Schoolchildren

Ozasa, Kotaro; Hama, Takemitsu; Dejima, Kenji; Watanabe, Yoshiyuki; Hyo, Sawako; Takato, Tsuyoshi; Araki, Natsuko; Takenaka, Hiroshi

doi:10.2332/allergolint.o-07-513

Cited by 26 publications

(25 citation statements)

References 11 publications

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“…In a previous study, no significant difference in the prevalence of atopic dermatitis between boys and girls in Japan was reported [24]. However, the prevalence of asthma and rhinitis in boys was greater than that in girls [25][26][27]. Similar to previous studies, our study showed a higher symptom prevalence among boys than girls.…”

Section: Discussionsupporting

confidence: 80%

Dampness, food habits, and sick building syndrome symptoms in elementary school pupils

Saijo

Nakagi

Ito

et al. 2010

Environ Health Prev Med

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Objectives We investigated dampness/mold in schools and dwellings, and food habits and subjective symptoms in elementary school pupils, in order to clarify the effect of dampness and food habits on subjective symptoms in elementary school pupils. Methods Questionnaires were used to investigate dampness in classrooms and dwellings in Hokkaido, Japan, and its effect on subjective symptoms in 1,077 pupils in 8 elementary schools. We used a dampness index for both the home and classroom; the index was the sum of the presence of four dampness indicators: (1) visible mold, (2) moldy odor, (3) water leakage, and (4) condensation on windowpanes. The questionnaire also contained queries about food habits, as follows: the frequency of eating breakfast, whether the energy provided by the school lunch was sufficient, and whether eating too many snacks and/or sweets were consumed. Adjusted logistic regression was used to determine whether dampness and food habits were related to the subjective symptoms. Results In fully adjusted models, the home dampness index was significantly related to cough, general symptoms, and having at least one symptom; the classroom dampness index was significantly related to nasal symptoms. In addition, usually not eating breakfast was significantly related to eye symptoms, and too many snacks and/or sweets was significantly related to eye, nasal, and general symptoms. Conclusions Both home and classroom dampness can affect pupils' health. Home dampness, in particular, was significantly related to cough and general symptoms, and classroom dampness was significantly related to nasal symptoms. Furthermore, favorable food habits have a positive effect on pupils' subjective symptoms.

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Section: Discussionsupporting

confidence: 80%

Dampness, food habits, and sick building syndrome symptoms in elementary school pupils

Saijo

Nakagi

Ito

et al. 2010

Environ Health Prev Med

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“…Over the same period, however, rhinitis and itching eyes in spring and autumn, of the pollinosis type, continued to increase. In Japan, pollen of the Japanese cedar ( Cryptometria japonica ) and the Japanese cypress ( Chamaecyparis obtusa ), which shares common antigenicity with the Japanese cedar, spreads ubiquitously through the air at high levels from February to May, and the number of pollinosis patients has increased over the past 40 yr to become a major concern (22–24). Some 70% of the land surface of Japan is covered in forest, and 28% of those forests are made up of plantations of the Japanese cedar and the Japanese cypress (Japanese Forestry Agency: ‘State of Forestry Resources’ 2007).…”

Section: Discussionmentioning

confidence: 99%

Trends of allergic symptoms in school children: large‐scale long‐term consecutive cross‐sectional studies in Osaka Prefecture, Japan

Yura

Kouda

Iki

et al. 2011

Pediatric Allergy Immunology

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“…An increase in allergic diseases in Japan has recently been reported [1][2][3]; 3-4% of the population have symptoms of asthma, about 30% suffer from allergic rhinitis, and 20% of schoolchildren or junior high-school students have atopic dermatitis. In general, allergic disease is benign, but quality of life decreases remarkably due to cough, mucus and pruritus.…”

Section: Introductionmentioning

confidence: 99%

Assessment of allergic hypersensitivity to dental materials

Hosoki

Bando

Asaoka

et al. 2009

Bio-Medical Materials and Engineering

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Some metallic materials in dental prostheses may cause allergic hypersensitivity. Symptoms appear not only in the oral cavity, but also on hands, feet or the entire body. Release of metal ions is thought to cause the allergic reactions; micro-particles of the corrosion products of the metal and/or ionic metal hydroxides/oxides may be the allergens. The study purpose was to review clinical surveillance of dental allergic hypersensitivity in our dental hospital. From July 2000 to June 2005, 212 patients with suspected dental metal allergy were patch tested with 26 reagents, including 19 ready-made patch test reagents (Patch test reagents™, Torii Pharmaceutical Corporation, Tokyo, Japan) and 9 custom-made reagents. One-hundredand-sixty-seven patients were females (78.8%) and 45 patients were males (21.2%). A total of 148 patients (69.8%) had one or more positive patch test reactions. The most common allergens were nickel (25.0%), palladium (24.4%), chromium (16.7%), cobalt (15.9%) and stannum (12.5%). Typical allergic symptoms and diagnoses were Pustulosis palmaris et plantaris, lichen planus, stomatitis and contact dermatitis. This study indicates that dentists and dental researchers should be concerned about the allergenic potential of dental metal materials.

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A 13-year Study of Japanese Cedar Pollinosis in Japanese Schoolchildren

Cited by 26 publications

References 11 publications

Dampness, food habits, and sick building syndrome symptoms in elementary school pupils

Dampness, food habits, and sick building syndrome symptoms in elementary school pupils

Trends of allergic symptoms in school children: large‐scale long‐term consecutive cross‐sectional studies in Osaka Prefecture, Japan

Assessment of allergic hypersensitivity to dental materials

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