期刊
MATRIX BIOLOGY
卷 71-72, 期 -, 页码 250-261出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matbio.2018.04.008
关键词
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资金
- NIH [R01DK078314, R56DK100593, R01DK058366, T32 DK007126]
- Alport Syndrome Foundation-Pedersen Family-Kidney Foundation of Canada
The glomerular basement membrane (GBM) is an important component of the kidney's glomerular filtration barrier. Like all basement membranes, the GBM contains type IV collagen, laminin, nidogen, and heparan sulfate proteoglycan. It is flanked by the podocytes and glomerular endothelial cells that both synthesize it and adhere to it. Mutations that affect the GBM's collagen alpha 3 alpha 4 alpha 5(IV) components cause Alport syndrome (kidney disease with variable ear and eye defects) and its variants, including thin basement membrane nephropathy. Mutations in LAMB2 that impact the synthesis or function of laminin alpha 5 beta 2 gamma 1 (LM-521) cause Pierson syndrome (congenital nephrotic syndrome with eye and neurological defects) and its less severe variants, including isolated congenital nephrotic syndrome. The very different types of kidney diseases that result from mutations in collagen IV vs. laminin are likely due to very different pathogenic mechanisms. A better understanding of these mechanisms should lead to targeted therapeutic approaches that can help people with these rare but important diseases. (C) 2018 Elsevier B.V. All rights reserved.
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