Binding of serum immunoglobulins to collagens in IgA nephropathy and HIV infection.

Binding of serum immunoglobulins to collagens in IgA nephropathy and HIV infection.
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IgA 肾病和 HIV 感染中血清免疫球蛋白与胶原蛋白的结合。

DOI:
10.1038/ki.1992.298
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发表时间:
1992
影响因子:
19.6
通讯作者:
Mestecky,J
Mestecky,J
中科院分区:
医学1区
文献类型:
--
作者:
vandenWallBake,AW;Kirk,KA;Gay,RE;Switalski,LM;Julian,BA;Jackson,S;Gay,S;Mestecky,J

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伊加肾病和HIV感染中血清免疫球蛋白与胶原蛋白的结合。伊加肾病(IgAN)中伊加与系膜结合的机制尚不清楚。伊加和系膜基质成分之间的相互作用可能有贡献。我们测量了酶联免疫吸附试验的结合血清伊加,IgG,IgM从IgAN患者,人类免疫缺陷病毒I型(HIV)感染,和健康对照纯化的天然胶原蛋白I至VI型,并提取正常肾组织。HIV感染是一个适当的疾病控制,因为缺乏系膜伊加存款,尽管高血清水平的伊加和IgA 1含有免疫复合物。仅在IgAN中发现IgA与I型和V型胶原蛋白以及肾提取物的结合水平增加。IgAN和HIV感染的患者都增加了IgA与II型、III型和VI型胶原的结合。预吸收的血清与明胶大大减少了IgA结合胶原蛋白I型至IV型,但不V型和VI型。这一发现表明,与胶原V型的结合不是纤连蛋白介导的,但可能反映自身抗体的形成。因此,纤连蛋白介导的IgA-胶原相互作用对IgAN没有特异性,其致病作用值得怀疑。伊加抗胶原V型抗体的作用需要进一步研究。
Binding of serum immunoglobulins to collagens in IgA nephropathy and HIV infection. The mechanism of the binding of IgA to the mesangium in IgA nephropathy (IgAN) is unknown. Interactions between IgA and components of the mesangial matrix may contribute. We measured by enzyme-linked immunosorbent assay the binding of serum IgA, IgG, and IgM from patients with IgAN, human immunodeficiency virus type I (HIV) infection, and healthy controls to purified native collagen types I to VI, and to an extract of normal kidney tissue. HIV infection is an appropriate disease control because of the lack of mesangial IgA deposits, despite high serum levels of IgA and IgA1-containing immune complexes. Increased levels of IgA-binding to collagen types I and V and the kidney extract were found only in IgAN. Both IgAN and HIV-infected patients had increased IgA-binding to collagen types II, III, and VI. Preabsorption of the sera with gelatin substantially reduced the IgA-binding to collagen types I to IV, but not to types V and VI. This finding suggests that the binding to collagen type V is not fibronectin-mediated, but may reflect autoantibody formation. Thus, fibronectin-mediated IgA-collagen interactions are not specific for IgAN, and their pathogenetic role is questionable. The role of IgA anti-collagen type V antibodies requires further study.
DOI: 10.1172/jci112522
发表时间: 1986-06-01
影响因子: 15.9
作者:
CZERKINSKY, C;KOOPMAN, WJ;MESTECKY, J
通讯作者: MESTECKY, J
IgA 肾病患者体内存在循环抗基底膜抗体,与 I、II 和 IV 型胶原蛋白的常见结构发生反应。
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DOI: --
发表时间: 1984
期刊: Nephron
影响因子: 2.5
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发表时间: 1980-01-01
影响因子: 15.9
作者:
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发表时间: 1977-01-01
影响因子: 6.4
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