title: IL-5 predominant in bronchoalveolar lavage fluid and peripheral blood in a patient with acute eosinophilic pneumonia.
abstract: We describe an acute eosinophilic pneumonia (AEP) patient with bronchoalveolar lavage fluid (BALF). Eosinophil cell number (47%), content of interleukin (IL)-5 (8.22 x 10(2) pg/ml) and eosinophil cationic protein (9.25 micrograms/ml) were high in BALF. No eosinophilia was seen in peripheral blood on admission; however, content of IL-5 was 9.47 x 10(2) pg/ml. After methylprednisolone pulse therapy, he improved rapidly with a reduction in eosinophil cell number (7%) and the content of IL-5 (< 100 pg/ml) in BALF. However, a high content of IL-5 (6.9 x 10(2) pg/ml) and transient eosinophilia (17.5%) were seen in peripheral blood. It is important to distinguish between AEP and infectious pneumonia, because of the differing treatments. If the diagnosis of AEP is doubtful, BALF should be performed early.
authors.affiliation: First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto.
authors.forename: S
authors.initials: S
authors.lastname: Yamaguchi
authors.forename: Y
authors.initials: Y
authors.lastname: Okubo
authors.forename: M
authors.initials: M
authors.lastname: Hossain
authors.forename: K
authors.initials: K
authors.lastname: Fujimoto
authors.forename: T
authors.initials: T
authors.lastname: Honda
authors.forename: K
authors.initials: K
authors.lastname: Kubo
authors.forename: M
authors.initials: M
authors.lastname: Sekiguchi
authors.forename: K
authors.initials: K
authors.lastname: Takatsu
mesh_terms: D000208:Acute Disease; D000328:Adult; D001992:Bronchoalveolar Lavage Fluid / Q000737:chemistry* / Q000166:cytology; D006801:Humans; D015848:Interleukin-5 / Q000032:analysis* / Q000097:blood; D008297:Male; D011657:Pulmonary Eosinophilia / Q000175:diagnosis / Q000378:metabolism*; D012131:Respiratory Insufficiency / Q000150:complications
chemical_list: D015848:Interleukin-5