Surface IgA and Fc-alpha receptors on human alveolar macrophages from normal subjects and from patients with sarcoidosis.
Surface IgA and Fc-alpha receptors on human alveolar macrophages from normal subjects and from patients with sarcoidosis.
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正常受试者和结节病患者的人肺泡巨噬细胞上的表面 IgA 和 Fc-α 受体。
DOI:
10.1164/ajrccm/139.3.740
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发表时间:
1989
期刊:
影响因子:
--
通讯作者:
J. Vaerman
中科院分区:
文献类型:
--
作者:
Y. Sibille;B. Châtelain;P. Staquet;W. Merrill;D. Delacroix;J. Vaerman
Human alveolar macrophages (AM) obtained by bronchoalveolar lavage (BAL) were found to bear cytophilic IgA and Fc alpha-receptors (Fc alpha R) on their surface. The cytophilic IgA belongs to the IgA1 subclass, but unoccupied receptors can be saturated with either IgA1 or IgA2 molecules. Although both polymeric and monomeric forms could attach, binding was about 5-fold greater for the polymers. Both cytophilic IgA and Fc alpha R are sensitive to trypsin and disappear after 18 h of AM culture. An increase in cytophilic IgA was observed on AM from untreated patients with pulmonary sarcoidosis, but not on AM from steroid-treated patients. A significant correlation was found between IgA levels in BAL and the percentage of AM with cytophilic IgA in normal subjects and in steroid-treated sarcoid patients. However, no such relationship was seen among untreated patients. These data suggest that multiple factors may modulate AM surface receptors for IgA. Inflammatory events occurring in the lungs could alter receptor expression and perhaps be of significance in the immunophysiopathology of certain pulmonary diseases.
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DOI:
--
发表时间:
1987
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Perussia,B;Kobayashi,M;Rossi,ME;Anegon,I;Trinchieri,G
通讯作者:
Trinchieri,G
DOI:
--
发表时间:
1983
期刊:
Federation proceedings
影响因子:
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作者:
Spiegelberg,HL;Boltz-Nitulescu,G;Plummer,JM;Melewicz,FM
通讯作者:
Melewicz,FM
DOI:
10.1172/jci111669
发表时间:
1985
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
David;Friedman;Francis;Netti;Alan;D. Schreiber
通讯作者:
David;Friedman;Francis;Netti;Alan;D. Schreiber
DOI:
--
发表时间:
1985
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Maliszewski,CR;Shen,L;Fanger,MW
通讯作者:
Fanger,MW
DOI:
--
发表时间:
1981
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Guyre,PM;Crabtree,GR;Bodwell,JE;Munck,A
通讯作者:
Munck,A