result 10782 件
| Author | Murata, Atsuo| Miyake, Takashi| |
|---|---|
| Published Date | 2008-12 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| Author | Murata, Atsuo| Takahashi, Rina| |
|---|---|
| Published Date | 2008-12 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| Author | Wang Shuguang| Murata, Atsuo| |
|---|---|
| Published Date | 2008-12 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| Author | Hanaa, E.Sayed| Hossam, A.Gabbar| Soheir, A. Fouadc| Khalil, M. Ahmedc| Miyazaki, Shigeji| |
|---|---|
| Published Date | 2008-12 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| Author | Hanaa, E.Sayed| Hossam, A.Gabbar| Miyazaki, Shigeji| |
|---|---|
| Published Date | 2008-12 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| Author | Matsui Takeshi| Sakawa Masatoshi| Kato Kosuke| Matsumoto Koichi| |
|---|---|
| Published Date | 2008-12 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| Author | Hara Akira| Yamaguchi Tomohisa| Ichimura Takumi| Takahama Tetsuyuki| |
|---|---|
| Published Date | 2008-12 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| Author | Mera Kazuya| Ichimura Takumi| |
|---|---|
| Published Date | 2008-12 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| JaLCDOI | 10.18926/14788 |
|---|---|
| Title Alternative | 肺気腫と喘息のHRCT上のlow attenuation are（LAA）の性質の差。喫煙との関連を含めて |
| FullText URL | 74_035_041.pdf |
| Author | Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Iwagaki, Naofumi| Nagata, Takuya| Fujii, Makoto| Takata, Shingo| Yokoi, Tadashi| Hamada, Masanori| Tanizaki, Yoshiro| |
| Abstract | The low attenuation area (LAA) of the lungs on high resolution computed tomography (HRCT) was evaluated in 20 asthmatics (10 ex-smokers and 10 never-smokers) and 10 patients with pulmonary emphysema (all ex-smokers) by ventilatory function, lung volume, DLco, and a ratio of expiratory LAA/inspiratory LAA. 1 . The % LAA of the lungs on HRCT was significantly larger in patients with pulmonary emphysema(PE) than in those with asthma, but there was not significant difference in % LAA between ex-smokers and never-smokers of asthmatics. 2. A ratio of expiratory Winspiratory LAA was significantly higher in patients with PE than in those with asthma , and the ratio was significantly higher in ex-smokers of asthmatics than in never-smokers (p<0.05). 3 . The difference in % residual volume and % DLco was significant between asthma and PE , and between ex - smokers and never-smokers of asthmatics (% RV : p<0.05, DLco : p<0.05) . 4 . The difference in the values of % FVC, % FEV(1) .O, and FEV1.0% was significant between asthma and PE, but not significant between ex-smokers and never- smokers of asthmatics. The results suggest that the difference in a ratio of expiratory W inspiratory LAA, % RV and % DLco was significant between ex - smokers and never - smokers of asthmatics , and cigarette smoking induces more irreversible changes of the lungs. |
| Keywords | low attenuation area asthma pulmonary emphysema cigarette smoking |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2004-02-01 |
| Volume | volume74 |
| Start Page | 35 |
| End Page | 41 |
| ISSN | 1348-1258 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002308507 |
| JaLCDOI | 10.18926/14784 |
|---|---|
| Title Alternative | 長期間の喫煙は高齢者気管支喘息における気道過敏性と関連した白血球LTB4産生を亢進させる |
| FullText URL | 74_018_025.pdf |
| Author | Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Iwagaki, Naofumi| Nagata, Takuya| Fujii, Makoto| Takata, Shingo| Yokoi, Tadashi| Hamada, Masanori| Tanizaki, Yoshiro| |
| Abstract | Abstract : Influence of cigarette smoking on leukotriene 84 (LTB4) generation by leucocytes associated with bronchial hyperresponsiveness was examined in 110 patients with asthma. l. The frequency of positive RAST score for inhalant allergens and LTB4 generation by leucocytes were significantly larger in previous and current smokers than in nonsmokers. 2. In nonsmokers, bronchial hyperresponsiveness was significantly higher in asthmatics under the age of 49 years compared with that in patients between 50 and 59 years, between 60 and 69 years, and those over age 70 years. In contrast, no significant differences were present between bronchial hyperresponsiveness and patient age in previous and current smokers. 3. In patients over age 60, bronchial hyperresponsiveness was significantly higher in previous and current smokers than in nonsmokers. In these patients, LTB4 generation was significantly more increased in previous and current smokers than in nonsmokers. 4. A significant correlation was observed in asthmatics of nonsmokers between LTB4 generation and bronchial hyperresponsiveness . 5. LTC4 generation was significantly higher in previous and current smokers than in nonsmokers in patients under age 49 years. These results show that in patients over age 60 years, cigarette smoking induces an increase in the generation of LTB4, leading to an increase in bronchial hyperresponsiveness . |
| Keywords | cigarette smoking asthma LTB4 generation LTC4 generation bronchial hyperresponsiveness |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2004-02-01 |
| Volume | volume74 |
| Start Page | 18 |
| End Page | 25 |
| ISSN | 1348-1258 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002308359 |
| JaLCDOI | 10.18926/14772 |
|---|---|
| Title Alternative | Influences of aging and cigarette smoking on pathophysiology in elderly patients with asthma (2) |
| FullText URL | 73_093_101.pdf |
| Author | Tanizaki, Yoshiro| Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Tsugeno, Hirofumi| Okamoto, Makoto| Nishida, Norikazu| Nagata, Takuya| Takata, Shingo| Yokoi, Tadashi| |
| Abstract | 高齢者気管支喘息について.IgEにmediateされるアレルギー反応の特徴、臨床病態,肺機能(換気機能,ガス交換),気腫化傾向,治療上の問題点などを検討した. 1.高齢者喘息におけるIgE抗体の関与は予想外に多く,しかもアレルギーの家族歴を有する症例で特に高度であった。また,加齢とともに感作される抗原の種類が異なってくることが示唆された。 2.臨床病態では,単純性気管支攣縮型に比べ,気管支攣縮+過分泌型や細気管支閉塞型が増加する傾向が見られた｡ 3.肺機能では,airflow (% FVC,FEV1.0%)ゃlung volume(% RV)をあらわすパラメーターは,いずれも70才以上の症例で若青年者喘息に比べ有意に低下していることが示された｡また,transfer factor(% DLco)も70才以上の症例では有意の低下傾向が見られた。 4.HRCT上の1950HU以下の肺の% UIAは,加齢とともに増加する傾向を示し,% RVの増加と同様肺の気腫化傾向が見られること,しかし,この現象が肺気腫へと移行することはないことが示された. 5.治療上では,薬物療法よりも気道の浄化を促す吸入や水中運動(温泉療法など)が重要であると考えられた｡ |
| Keywords | 高齢者喘息 IgE抗体 % RV % DLco 気腫可傾向 |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2003-02-01 |
| Volume | volume73 |
| Start Page | 93 |
| End Page | 101 |
| ISSN | 1348-1258 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002308220 |
| JaLCDOI | 10.18926/14771 |
|---|---|
| Title Alternative | 食道痛細胞におけるWntのベータカテ二ンTCF経路の活性化の検討 |
| FullText URL | 73_075_080.pdf |
| Author | Mizushima, Takaaki| Ochi, Koji| Emori, Yasuyuki| Tanioka, Hiroaki| Sawa, Kiminari| Fujioka, Shinichi| Shinji, Toshiyuki| Koide, Norio| Tanizaki, Yoshiro| |
| Abstract | Although, accumulation of nuclear and cytoplasmic beta-catenin has been observed in ESCCs, mutation of APC and beta-catenin are not found in ESCCs. Therefore, another mechanism for cytoplasmic beta- catenin accumulation might exist in ESCCs. Materials and Methods: Human ESCCs cell lines and the 293 stable transfectants expressing Wnt-1, Wnt-5A, and Wnt-7A were cultured under standard conditions. The TOPFlash or FOPFlash reporter plasmids were transfected. Results: Transfected mutant beta-catenin as well as an axin fragment harbing the GSK3 beta interaction domain, the latter a potent GSK3 beta inhibitor. both robustly activated pTOPFlash in ESCCs cells. When pTOPFlash/pFOPFlash reporters were transfected in ESCCs cell lines followed by cocultivation with 293 cells that stably express Wnt -1, all cell lines except one demonstrated TCF mediated transcriptional. But, cells were co- cultured, Wnt - 7A or Wnt - 5A did not activate TCF mediated transcription in a cell number dependent fashion. Discussion; We report the activation of TCF promoter gene by extemal Wnt stimuli in ESCCs cells. |
| Keywords | esophageal carcinoma Wnt TCF beta-catenin |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2003-02-01 |
| Volume | volume73 |
| Start Page | 75 |
| End Page | 80 |
| ISSN | 1348-1258 |
| language | English |
| File Version | publisher |
| NAID | 120002308224 |
| JaLCDOI | 10.18926/14769 |
|---|---|
| Title Alternative | The level of plasma BNP continued remarkably high in the elderly presented with old myocardial infarction. |
| FullText URL | 73_064_071.pdf |
| Author | Nishida, Norikazu| Ashida, Kozo| Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Tsugeno, Hirofumi| Okamoto, Makoto| Nagata, Takuya| Yokoi, Tadashi| Nakai, Mutsuo| Makino, Hirofumi| Tanizaki, Yoshiro| |
| Abstract | 心不全が比較的良好にコントロールされているのにもかかわらず,高齢の陳旧性心筋梗塞後患者等で脳性ナトリウム利尿ペプチド(BNP)の異常高値が持続する場合がある.今回,また超高齢の心不全患者で同所見を認めたので,考察を含めて報告する. 93歳高齢の陳急性心筋梗塞患者で,BNP1600-1200の著明な高値が持続した.主に心尖部と一部の前側壁の陳旧性心筋梗塞症であったが,利尿薬等による治療によって心不全はコントロールできており,救急入院時を除いては,鬱血性心不全の状態ではなかった.心願超音 波検査でも心内圧の上昇や下大静脈の拡張も認めなかった.利尿薬を増量するとむしろ脱水による腎機能障害の増悪を認めていた. 入院中に狭心痛を認めることがあり,心筋逸脱酔素の軽度の上昇を認めた.BNPの著明な高値持続は,陳旧性心筋梗塞後の心臓機能障害や左室肥大,僧帽弁閉頚不全等による慢性心不全･心負荷のための心筋でのBNP合成･分泌元進の他に,新たな小梗塞(非貫壁性心筋梗塞)や持続する無症候性の心筋虚血による心筋でのBNP合成･分泌亢進,高齢によるBNPクリアランスの低下と分泌の持続的亢進,慢性腎機能障害によるBNPクリアランスの低下,心筋障害後の心筋再構築(リモデリング)の訳節と心筋繊維化抑制の為に合成が元進していると考えられる.更に,いわゆる老人肺･慢性呼吸機能低下による右心系の負荷による心室からの分泌元進,ステロイドホルモン内服による鉱井コルチコイド作用,貧血,低栄養状態等の様々な要因が重なっているものと考えられた. 心臓でBNPの産生･分泌が亢進するのは,心不全に伴う全身の体液量バランスや血行動態等の悪化を改善,調節するためだけではなく,心臓自身のリモデリングの調節･抑制,再構築の調薪のため,さらには心臓･心筋の繊維化や拡張障害の増悪を抑制するための自己防衛 機構としても機能している.心臓は,単に循環系のポンプではなく,利尿ペプチドホルモンを分泌する内分泌器官でもある. 一般的に加齢に伴いBNPは上昇してくる.特に70歳以上の高齢者では顕著になる.考察ではその点についても新たな文献的考察も含めて報告し,高齢者のBNPの捉え方と治療についても述べる. |
| Keywords | bronchial asthma spa therapy perilla seed oil alpha -linolenic acid Leukotriene C4 |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2003-02-01 |
| Volume | volume73 |
| Start Page | 64 |
| End Page | 71 |
| ISSN | 1348-1258 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002308534 |
| JaLCDOI | 10.18926/14767 |
|---|---|
| Title Alternative | 高齢者喘息のIgEにmediateされるアレルギー反応におよぽす喫煙の影響 |
| FullText URL | 73_049_054.pdf |
| Author | Ashida, Kozo| Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Tsugeno, Hirofumi| Nishida, Norikazu| Nagata, Takuya| Takata, Shingo| Yokoi, Tadashi| Tanizaki, Yoshiro| |
| Abstract | The influence of cigarette smoking on the pathophysiology of asthma in the elderly remains controversial. In this study, the inluence of cigarette smoking on IgE - mediated allergy including the generation of leukotrienes B4 (LTB4) and C4 (LTC4) was examined in forty asthmatics over the age of 70 years (20 ex-smokers and 20 never-smokers), and 20 patients with pulmonary emphysema over age 70 (all ex - smokers). The frequency of patients with serum IgE more than 200 IU/ml was significantly larger in smoking asthmatics than in non - smoking asthmatics. The incidence of patients with positive RAST score for inhalant allergens, was also significantly higher in patients with a history of smoking than in those without a smoking history. There were no significant differences in the frequency of patients with positive RAST and those with serum IgE more than 200 IU/ml between non-smoking asthmatics and patients with pulmonary emphysema. The generation of leukotriene B4 (LTB4) by leukocytes was significantly more increased in ex-smokers than in never-smokers in the elderly asthmatics. The results suggest the possibility that cigarette smoking enhances IgE - mediated allergy in elderly patients with asthma. |
| Keywords | cigarette smoking IgE - mediated allergy LTB4 LTC4 generation elderly asthmatics |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2003-02-01 |
| Volume | volume73 |
| Start Page | 49 |
| End Page | 54 |
| ISSN | 1348-1258 |
| language | English |
| File Version | publisher |
| NAID | 120002308483 |
| JaLCDOI | 10.18926/14766 |
|---|---|
| FullText URL | 73_044_048.pdf |
| Author | Ashida, Kozo| Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Tsugeno, Hirofumi| Nishida, Norikazu| Nagata, Takuya| Yokoi, Tadashi| Takata, Shingo| Tanizaki, Yoshiro| |
| Abstract | The influence of cigarette smoke on pulmonary function, airflow, lung volume, and transfer factor in patients with asthma was examined in 40 subjects over the age of 70 years (20 ever-smokers and 20 never-smokers), and 20 patients with pulmonary emphysema over age 70 (all ex-smokers). The ventilatory parameters showing airflow limitation (% FEV(1) and FEV(1)%) were not significantly different between ever-smokers and never-smokers of elderly asthmatics. In contrast, % FEV(1) and FEV(1) % values were significantly lower in patients with pulmonary emphysema than in those with asthma with or without a history of smoking. The % RV value was significantly larger and % DLco value was significantly more decreased in ever-smokers compared with neversmokers of the elderly asthmatics. However, there were no significant differences in % RV and % DLco values between asthmatics with a history of smoking and patients with pulmonary emphysema. The results show that cigarette smoke inflluences % RV and % DLco, but not % FEV(1) and FEV(1) %, suggesting airflow limitation of large and moderate size airways. |
| Keywords | cigarette smoking FEV(1) % % RV % DLco elderly asthmatics |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2003-02-01 |
| Volume | volume73 |
| Start Page | 44 |
| End Page | 48 |
| ISSN | 1348-1258 |
| language | English |
| File Version | publisher |
| NAID | 120002308159 |
| JaLCDOI | 10.18926/14764 |
|---|---|
| Title Alternative | lgEにmediatedされるアレルギ反応― 、肺機能、HRCT上の肺のlow attenuatjonarea (LAA)、およびLTB4,LTC4産生から見た喘息の病態に対する加齢の影響 |
| FullText URL | 73_031_038.pdf |
| Author | Mitsunobu, Fumihiro| Ashida, Kozo| Hosaki, Yasuhiro| Tsugeno, Hirofumi| Nishida, Norikazu| Nagata, Takuya| Yokoi, Tadashi| Takata, Shingo| Tanizaki, Yoshiro| |
| Abstract | The influence of aging on the pathophysiology of asthma in the elderly was examined in 40 patients (20 younger asthmatics under the age of 50 years, mean age 32.5 years and 20 elderly asthmatics over the age of 70 years, mean age 74.3 years), relating to IgE - mediated allergy, pulmonary function, low attenuation area (LAA) of the lungs on HRCT, and the generation of leukotrienes B4 (LTB4) and C4 (LTC4) by leukocytes. The frequency of patients with serum IgE of more than 200 IU/ml, and the incidence of those with a positive RAST score for inhalant allergens were significantly higher in younger patients than in elderly subjects. The values of % FVC, % FEV1 and FEV 1% were significantly larger in younger patients compared with elderly subjects. The % RV was significantly larger in elderly patients than in younger patients, however, the difference in % DLco was not significant between the two age groups. The LAA of the lungs on HRCT and the ratio of expiratory LAA (exp LAA) to inspiratory LAA (ins LAA) were also significantly larger in elderly asthmatics than in younger subjects. The generation of LTB4 and LTC4 was larger in younger patients than in elderly subjects, and LTB4 generation was significantly larger in younger subjects compared with elderly subjects. These results suggest that changes in IgE-mediated allergy, airflow and lung volume accompanied with hyperinflation are often observed in elderly asthmatics. |
| Keywords | IgE-mediated allergy pulmonary function elderly asthmatics HRCT % RV |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2003-02-01 |
| Volume | volume73 |
| Start Page | 31 |
| End Page | 38 |
| ISSN | 1348-1258 |
| language | English |
| File Version | publisher |
| NAID | 120002308601 |
| Author | Murata, Atsuo| |
|---|---|
| Published Date | 2008/12/10 |
| Publication Title | Proceedings : Fourth International Workshop on Computational Intelligence & Applications |
| Volume | volume2008 |
| Issue | issue1 |
| Content Type | Conference Paper |
| JaLCDOI | 10.18926/14758 |
|---|---|
| Title Alternative | 長期間喫煙による気管支唱息,肺気腫の病態的変化 |
| FullText URL | 075_074_087.pdf |
| Author | Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Hamada, Masanori| Iwagaki, Naofumi| Fujii, Makoto| Takata, Shingo| Tanizaki, Yoshiro| |
| Abstract | The influence of long-term cigarette smoking on the pathophysiology of chronic respiratory diseases with obstructive ventilatory dysfunction was discussed in patients with asthma and pulmonary emphysema (PE). 1. In patients with asthma, significant differences in the pathophysiology of the disease were observed between smokers and nonsmokers. A positive RAST score against inhalant allergens, bronchial hyperresponsiveness, and LTB4 generation by leucocytes were significantly more increased in smokers than in nonsmokers. The values of FEV1/FVC and OLco were significantly more decreased, and % RV was significantly more increased in smokers than in nonsmokers. 2. In comparison of asthma with PE, IgE-mediated allergy was significantly more increased in smokers with asthma than in nonsmokers with asthma and in smokers with PE. The values of % FEV1, FEVl %, and % OLco were significantly higher in nonsmokers with asthma than in smokers with PE, however, the % OLco and % RV were not significantly different between smokers with asthma and those with PE. The % LAA of the lungs on HRCT was larger in patients with PE than in smokers and nonsmokers with asthma. The results suggest that cigarette smoking influences the pathophysiology of asthma and PE. |
| Keywords | cigarette smoking (喫煙) pulmonary function (肺機能) hyperinflation (肺の過膨張) asthma (喘息) pulmonary emphysema (肺気腫) |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2004-12-01 |
| Volume | volume75 |
| Start Page | 74 |
| End Page | 87 |
| ISSN | 1348-1258 |
| language | English |
| File Version | publisher |
| NAID | 120002308631 |
| JaLCDOI | 10.18926/14757 |
|---|---|
| Title Alternative | Spa therapy for patients with respiratory disease. Clinical efficacy and action mechanisms of the therapy on asthma |
| FullText URL | 075_061_073.pdf |
| Author | Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Hamada, Masanori| Yamaoka, Kiyonori| Tanizaki, Yoshiro| |
| Abstract | 呼吸器疾患に対する温泉療法は,最近の22年間にわたり行われてきた結果,その有用性は十分明かとなっている｡この22年の間に,温泉療法を受ける対象もかなり変わってきており,例えば気管支喘息では,ステロイド依存性重症難治性喘息の全症例に対する割合は明 らかに低くなってきている｡また,COPDでは最近全症例に対する肺気腫の割合も,また症例数も著明に増加しつつある｡一方,温泉療法を求めて来院される症例数は年ごとに増加する傾向にあり,初期の5年間と比べ,最近の5年間では,気管支喘息では8.2倍,また肺気腫では 34.8倍の増加が観察されている｡呼吸器疾患に対する温泉療法の作用機序としては,直接作用として,自･他覚症状の改善,換気機能の改善,気道過敏性の改善,気道抵抗の低下,肺の過膨脹の改善,過分泌の抑制などが観察される｡一方,間接作用としては,副腎皮質機能の改善,精神的リラックス,抗酸化酵素であるSOD活性の克進などが観察され,これらの間接作用も気管支喘息の病態改善に重要な役割を果しているものと考えられる｡ |
| Keywords | 温泉療法 (spa therapy) 気管支喘息 (asthma) 精神的リラックス (psychological relaxation) SOD活性 (SOD activity) 副腎皮質機能 |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2004-12-01 |
| Volume | volume75 |
| Start Page | 61 |
| End Page | 73 |
| ISSN | 1348-1258 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002308488 |
| JaLCDOI | 10.18926/14755 |
|---|---|
| Title Alternative | 高齢者喘息における喫煙による気道過敏性の亢進について |
| FullText URL | 73_025_030.pdf |
| Author | Mitsunobu, Fumihiro| Hosaki, Yasuhiro| Ashida, Kozo| Tsugeno, Hirofumi| Nishida, Norikazu| Nagata, Takuya| Takata, Shingo| Yokoi, Tadashi| Tanizaki, Yoshiro| |
| Abstract | Influence of cigarette smoking on the pathogenesis of asthma in the elderly remains controversial. This study was undertaken to clarify the influence of cigarette smoking on IgE-mediated allergy, bronchial hyperresponsiveness, and the generation of leukotrienes B4 (LTB4) and C4 (LTC4) by leukocytes in 48 elderly patients (25 patients with a history of smoking for more than 20 years and 23 never-smokers) with asthma over the age of 70 years. 1. The incidence of positive IgE antibodies for inhalant allergens was significantly higher in asthmatics with a history of smoking than in never-smokers of asthmatics. 2. In bronchial hyperresponsiveness for methacholine, the Cmin was significantly lower in ever-smokers than in never-smokers of elderly asthmatics. 3. The generation of LB4 was significantly increased in patients with a history of smoking compared with those without a smoking history. However, the difference in LTC4 generation was not significant between ever-smokers and never-smokers of asthmatics. These results suggest that cigarette smoking increases bronchial hyperresponsiceness through IgE-mediated allergy and LTB4 generation. |
| Keywords | cigarette smoking IgE - mediated allergy elderly asthmatics bronchial hyperresponsiveness |
| Publication Title | 岡大三朝医療センター研究報告 |
| Published Date | 2003-02-01 |
| Volume | volume73 |
| Start Page | 25 |
| End Page | 30 |
| ISSN | 1348-1258 |
| language | English |
| File Version | publisher |
| NAID | 120002308038 |
