Abstract:
:In vivo and animal models of monoclonal light chain-associated renal diseases are limited. The Vk*MYC transgenic model with multiple myeloma in 50-70 weeks old mice with renal involvement has been reported before, but detailed renal pathologic changes have not been well documented. This study fully investigated pathologic changes in the kidneys of Vk*MYC transgenic model using light microscopy, immunofluorescence stains for kappa and lambda light chains, and electron microscopy. Compared to the kidneys of wild-type mice, the kidneys of transgenic mice showed either mesangial segmental expansion, some with associated hypercellularity, and/or thrombotic obstruction of glomerular capillaries. The glomeruli revealed stronger lambda staining than kappa light chain staining. Six out of 12 kidneys from transgenic mice showed abundant electron-dense deposits when examined ultrastructurally. The deposits were located in glomerular capillary lumina in three cases. Large luminal and subendothelial deposits were characterized by randomly disposed microtubular structures measuring up to 16 nm in diameter, with overall features most consistent with cryoglobulins. In summary, about 50% of kidneys from the Vk*MYC mice with myeloma had features most consistent with monoclonal cryoglobulinemic glomerulopathy.
journal_name
Ultrastruct Patholjournal_title
Ultrastructural pathologyauthors
Zhang PL,Herrera GA,Liu Bdoi
10.1080/01913123.2020.1841349subject
Has Abstractpub_date
2020-11-20 00:00:00pages
387-394issue
4-6eissn
0191-3123issn
1521-0758journal_volume
44pub_type
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