학술논문
Nationwide survey of refractory asthma with bronchiectasis by inflammatory subtypes
Document Type
Report
Author
Nomura, Natsuko; Matsumoto, Hisako; Yokoyama, Akihito; Nishimura, Yoshihiro; Asano, Koichiro; Niimi, Akio; Tohda, Yuji; Harada, Norihiro; Nagase, Hiroyuki; Nagata, Makoto; Inoue, Hiromasa; Kondo, Mitsuko; Horiguchi, Takahiko; Miyahara, Nobuaki; Hizawa, Nobuyuki; Hojo, Masayuki; Hattori, Noboru; Hashimoto, Naozumi; Yamasaki, Akira; Kadowaki, Toru; Kimura, Tomoki; Miki, Mari; Taniguchi, Hirokazu; Toyoshima, Mikio; Kawamura, Tetsuji; Matsuno, Osamu; Sato, Yoko; Sunadome, Hironobu; Nagasaki, Tadao; Oguma, Tsuyoshi; Hirai, Toyohiro; Ohnishi, Hisashi; Imaizumi, Kazuyoshi; Fujita, Masaki; Suda, Takafumi; Takaki, Yoichi; Kijima, Takashi; Tobino, Kazunori; Hoshino, Makoto; Imokawa, Shiro; Hiraoka, Noriya; Sugita, Takakazu; Ikeda, Naomi Miho; Ohnishi, Kayoko Okamura Hisashi; Terada-Hirashima, Junko; Isogai, Sumito; Hirano, Ryosuke; Fujisawa, Tomoyuki; Higaki, Naoko; Miyamoto, Shintaro; Nakashima, Taku; Iwamoto, Hiroshi; Mikami, Koji; Minami, Toshiyuki; Takahashi, Ryo; Tsuji, Taisuke; Ikeue, Tatsuyoshi; Kunichika, Naomi; Tomari, Shinya; Okochi, Yasumi; Mato, Naoko; Hagiwara, Koichi; Dobashi, Kunio; Taooka, Yasuyuki; Machida, Kentaro; Tanosaki, Takae; Masaki, Katsunori; Fukunaga, Koichi; Sano, Akiko; Iwanaga, Takashi; Higashimoto, Yuji; Matsumoto, Masataka; Takatsuki, Kiyonobu; Nagata, Kazuma; Tachikawa, Ryo; Tomii, Keisuke; Kaneko, Masahiro; Tomioka, Hiromi; Nagano, Tatsuya; Yamane, Mayuka; Yoshida, Chieko; Sakagami, Takuro; Seto, Yurie; Kaneko, Yoshiko; Takayama, Koichi; Terada, Satoru; Nishi, Kenta; Tajiri, Tomoko; Nakamura, Saya; Wakahara, Keiko; Ito, Takefumi; Nakano, Takako; Yamashita, Takafumi; Takata, Shohei; Seri, Yoshihiro; Mizumori, Yasuyuki; Tsukamoto, Hiroaki; Kagami, Ryogo; Nakahara, Yasuharu; Ishii, Yukio; Kita, Toshiyuki; Hidaka, Kouko; Minakuchi, Masayoshi; Tsuboi, Tomomasa; Tamaki, Shinji; Matsuki, Takanori; Kida, Hiroshi; Tomita, Katsuyuki; Abe, Takashi; Shindoh, Joe; Taniguchi, Akihiko; Azuma, Masato; Kataoka, Mikio; Ogawa, Haruhiko; Matsumoto, Takeshi; Aihara, Kensaku; Nakagome, Kazuyuki; Miyajima, Satsuki; Hashimoto, Kentaro; Shiota, Tetsuhiro; Yamaguchi, Masafumi; Nakano, Yasutaka; Otsuka, Kojiro; Yasuo, Masanori; Hanaoka, Masayuki; Yamada, Takashi; Shirai, Toshihiro; Iwasaki, Yoshinobu; Mineshita, Masamichi; Tsuburai, Takahiro; Komase, Yuko; Koh, Hidefumi; Hasegawa, Koichi; Kita, Hideo; Murakami, Koji; Sugiura, Hisatoshi; Ichinose, Masakazu; Kutsuzawa, Tomoko; Tanaka, Jun; Kono, Yuta; Abe, Shinji; Nakamura, Morio; Orimo, Mami; Tagaya, Etsuko; Matsuda, Toshiaki; Harada, Tomoya; Iijima, Hiroaki; Kawabata, Hiroki; Yatera, Kazuhiro; Masuko, Hironori; Morishima, Yuko; Nakanishi, Masanori; Yamamoto, Nobuyuki; Inoue, Sumito; Hamada, Kazuki; Yamaji, Yoshikazu; Hirano, Tsunahiko; Matsunaga, Kazuto
Source
Respiratory Research. December 20, 2022, Vol. 23 Issue 1
Subject
Language
English
ISSN
1465-9921
Abstract
Author(s): Natsuko Nomura[sup.1] , Hisako Matsumoto[sup.1,2] , Akihito Yokoyama[sup.3] , Yoshihiro Nishimura[sup.4] , Koichiro Asano[sup.5] , Akio Niimi[sup.6] , Yuji Tohda[sup.2] , Norihiro Harada[sup.7] , Hiroyuki Nagase[sup.8] , Makoto Nagata[sup.9] [...]
Rationale Bronchiectasis and bronchiolitis are differential diagnoses of asthma; moreover, they are factors associated with worse asthma control. Objective We determined clinical courses of bronchiectasis/bronchiolitis-complicated asthma by inflammatory subtypes as well as factors affecting them. Methods We conducted a survey of refractory asthma with non-cystic fibrosis bronchiectasis/bronchiolitis in Japan. Cases were classified into three groups, based on the latest fractional exhaled NO (FeNO) level (32 ppb for the threshold) and blood eosinophil counts (320/[micro]L for the threshold): high (type 2-high) or low (type 2-low) FeNO and eosinophil and high FeNO or eosinophil (type 2-intermediate). Clinical courses in groups and factors affecting them were analysed. Results In total, 216 cases from 81 facilities were reported, and 142 were stratified: 34, 40 and 68 into the type 2-high, -intermediate and -low groups, respectively. The frequency of bronchopneumonia and exacerbations requiring antibiotics and gram-negative bacteria detection rates were highest in the type 2-low group. Eighty-seven cases had paired latest and oldest available data of FeNO and eosinophil counts; they were analysed for inflammatory transition patterns. Among former type 2-high and -intermediate groups, 32% had recently transitioned to the -low group, to which relatively low FeNO in the past and oral corticosteroid use contributed. Lastly, in cases treated with moderate to high doses of inhaled corticosteroids, the frequencies of exacerbations requiring antibiotics were found to be higher in cases with more severe airway lesions and lower FeNO. Conclusions Bronchiectasis/bronchiolitis-complicated refractory asthma is heterogeneous. In patients with sputum symptoms and low FeNO, airway colonisation of pathogenic bacteria and infectious episodes are common; thus, corticosteroids should be carefully used. Keywords: Asthma, Blood eosinophil counts, Bronchiectasis, Bronchiolitis, FeNO
Rationale Bronchiectasis and bronchiolitis are differential diagnoses of asthma; moreover, they are factors associated with worse asthma control. Objective We determined clinical courses of bronchiectasis/bronchiolitis-complicated asthma by inflammatory subtypes as well as factors affecting them. Methods We conducted a survey of refractory asthma with non-cystic fibrosis bronchiectasis/bronchiolitis in Japan. Cases were classified into three groups, based on the latest fractional exhaled NO (FeNO) level (32 ppb for the threshold) and blood eosinophil counts (320/[micro]L for the threshold): high (type 2-high) or low (type 2-low) FeNO and eosinophil and high FeNO or eosinophil (type 2-intermediate). Clinical courses in groups and factors affecting them were analysed. Results In total, 216 cases from 81 facilities were reported, and 142 were stratified: 34, 40 and 68 into the type 2-high, -intermediate and -low groups, respectively. The frequency of bronchopneumonia and exacerbations requiring antibiotics and gram-negative bacteria detection rates were highest in the type 2-low group. Eighty-seven cases had paired latest and oldest available data of FeNO and eosinophil counts; they were analysed for inflammatory transition patterns. Among former type 2-high and -intermediate groups, 32% had recently transitioned to the -low group, to which relatively low FeNO in the past and oral corticosteroid use contributed. Lastly, in cases treated with moderate to high doses of inhaled corticosteroids, the frequencies of exacerbations requiring antibiotics were found to be higher in cases with more severe airway lesions and lower FeNO. Conclusions Bronchiectasis/bronchiolitis-complicated refractory asthma is heterogeneous. In patients with sputum symptoms and low FeNO, airway colonisation of pathogenic bacteria and infectious episodes are common; thus, corticosteroids should be carefully used. Keywords: Asthma, Blood eosinophil counts, Bronchiectasis, Bronchiolitis, FeNO