Laser microdissection and mass spectrometry-based proteomics aids the diagnosis and typing of renal amyloidosis.

Laser microdissection and mass spectrometry-based proteomics aids the diagnosis and typing of renal amyloidosis.
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DOI:
10.1038/ki.2012.108
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发表时间:
2012-07
影响因子:
19.6
通讯作者:
--
中科院分区:
医学1区
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肾淀粉样变性的准确诊断和分型对预后、遗传咨询和治疗至关重要。激光显微切割和质谱是分析和诊断许多肾脏疾病的新兴技术。在此,我们报告了2008-2010年期间对127例肾淀粉样变进行激光显微切割和质谱分析的结果。我们在淀粉样蛋白沉积物中发现了以下蛋白质:免疫球蛋白轻链和重链、次级反应性血清淀粉样蛋白A蛋白、白细胞源性趋化因子-2、纤维蛋白原-α链、甲状腺素运载蛋白、载脂蛋白A-I和A-IV、凝溶胶蛋白和β-2微球蛋白。因此,激光显微切割肾脏内的受影响区域,然后进行质谱分析,提供了对存款组成的直接测试,并形成了一个有用的辅助技术,用于在一个单一的程序中准确诊断和分型肾淀粉样变性。
Accurate diagnosis and typing of renal amyloidosis is critical for prognosis, genetic counseling, and treatment. Laser microdissection and mass spectrometry are emerging techniques for the analysis and diagnosis of many renal diseases. Here we present the results of laser microdissection and mass spectrometry performed on 127 cases of renal amyloidosis during 2008–2010. We found the following proteins in the amyloid deposits: immunoglobulin light and heavy chains, secondary reactive serum amyloid A protein, leukocyte cell–derived chemotaxin-2, fibrinogen-α chain, transthyretin, apolipoprotein A-I and A-IV, gelsolin, and β-2 microglobulin. Thus, laser microdissection of affected areas within the kidney followed by mass spectrometry provides a direct test of the composition of the deposit and forms a useful ancillary technique for the accurate diagnosis and typing of renal amyloidosis in a single procedure.
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