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Asthma aggravates the patient\u2019s quality of life and needs continuous pharmacological treatment. Therefore, discovery of drugs for the treatment of asthma is an important area of human health. The aim of the present study was to evaluate whether Cynanchum atratum extract (CAE) modulates the asthma-like allergic airway inflammation and to study its possible mechanism of action using ovalbumin (OVA)-induced airway inflammation and lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice, as well as a mast cell-based in vitro model. The histological analysis showed that CAE reduced the airway constriction and immune cell infiltration. CAE also inhibited release of [Formula: see text]-hexosaminidase and expression of inflammatory cytokines such as tumor necrosis factor (TNF)-[Formula: see text], interleukin (IL)-4, and IL-5 in bronchoalveolar lavage fluid and lung tissues. In addition, CAE reduced the OVA-specific immunoglobulin (Ig) E, total IgE, IgG1, and IgG2a levels in the serum. In the LPS-induced ALI model, CAE suppressed the LPS-induced lung barrier dysfunction and the release of proinflammatory cytokines. Because allergic airway inflammatory responses are associated with the activation of mast cells, RBL-2H3 cells were used to evaluate the underlying mechanism of CAE effects. In RBL-2H3 cells, CAE down-regulated release of [Formula: see text]-hexosaminidase and histamine by reducing the intracellular calcium influx. In addition, CAE suppressed the expression of proinflammatory cytokines by inhibiting nuclear translocation of nuclear factor-[Formula: see text]B. Taken together, our findings suggest that CAE may help in the prevention or treatment of airway inflammatory diseases. <\/jats:p>","DOI":"10.1142\/s0192415x19500915","type":"journal-article","created":{"date-parts":[[2019,12,4]],"date-time":"2019-12-04T00:43:45Z","timestamp":1575420225000},"page":"1795-1814","source":"Crossref","is-referenced-by-count":5,"title":["<i>Cynanchum atratum<\/i> Ameliorates Airway Inflammation via Maintaining Alveolar Barrier and Regulating Mast Cell-Mediated Inflammatory Responses"],"prefix":"10.1142","volume":"47","author":[{"given":"Yeon-Yong","family":"Kim","sequence":"first","affiliation":[{"name":"Immunoregulatory Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181, Ipsin-gil, Jeongeup 56212, Republic of Korea"},{"name":"CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, 680, Gukchaebosang-ro, Jung-gu, Daegu 41944, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Soyoung","family":"Lee","sequence":"additional","affiliation":[{"name":"Immunoregulatory Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181, Ipsin-gil, Jeongeup 56212, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hyun-Jae","family":"Jang","sequence":"additional","affiliation":[{"name":"Immunoregulatory Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181, Ipsin-gil, Jeongeup 56212, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gayeong","family":"Hur","sequence":"additional","affiliation":[{"name":"Immunoregulatory Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181, Ipsin-gil, Jeongeup 56212, Republic of Korea"},{"name":"Department of Biotechnology, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju 54896, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seung Woong","family":"Lee","sequence":"additional","affiliation":[{"name":"Immunoregulatory Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181, Ipsin-gil, Jeongeup 56212, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyungsook","family":"Jung","sequence":"additional","affiliation":[{"name":"Immunoregulatory Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181, Ipsin-gil, Jeongeup 56212, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seung-Jae","family":"Lee","sequence":"additional","affiliation":[{"name":"Immunoregulatory Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181, Ipsin-gil, Jeongeup 56212, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sang-Hyun","family":"Kim","sequence":"additional","affiliation":[{"name":"CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, 680, Gukchaebosang-ro, Jung-gu, Daegu 41944, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mun-Chual","family":"Rho","sequence":"additional","affiliation":[{"name":"Immunoregulatory Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181, Ipsin-gil, Jeongeup 56212, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2019,12,15]]},"reference":[{"key":"S0192415X19500915BIB001","first-page":"107","volume":"42","author":"Ahn M.J.","year":"2011","journal-title":"Kor. 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