Abstract:
BACKGROUND:Feather duvet lung (FDL) is a rare subgroup of bird fancier's lung (BFL). We were interested in determining antigen-specific IgG antibodies in patients with FDL and comparing them with those with BFL. MATERIAL AND METHODS:Specific IgG antibodies against goose and duck feathers, analysed with an automated fluorimetric enzyme immunoassay, were measured in healthy subjects (group A, n = 30), in patients with FDL (group B, n = 10) and with BFL (group C, n = 35); typical specific IgG antibodies of BFL in groups B and C. RESULTS:An optimal threshold value for antibodies against goose or duck feathers to differentiate patients with either BFL or FDL from healthy subjects was determined at 10.85 mg L(-1) for goose feathers and at 8.81 mg L(-1) for duck feathers, respectively. Specific IgG antibodies against goose feathers were significantly higher in group B compared with group C. A ratio of specific IgG antibodies against goose feathers and budgerigar antigens with a threshold value of 0.91 could discriminate between patients with FDL and BFL with a specificity of 97% and a sensitivity of 90%. CONCLUSIONS:We were able to demonstrate the significant difference in IgG antibodies in patients with FDL and BFL and their contribution to discriminate between these similar kinds of extrinsic allergic alveolitis.
journal_name
Eur J Clin Investjournal_title
European journal of clinical investigationauthors
Koschel D,Lützkendorf L,Wiedemann B,Höffken Gdoi
10.1111/j.1365-2362.2010.02327.xsubject
Has Abstractpub_date
2010-09-01 00:00:00pages
797-802issue
9eissn
0014-2972issn
1365-2362pii
ECI2327journal_volume
40pub_type
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