Imasawa T, Utsunomiya Y, Kawamura T, Nagasawa R, Maruyama N, Sakai O. Evidence suggesting the involvement of hematopoietic stem cells in the pathogenesis of IgA nephropathy.
Biochem Biophys Res Commun 1998;
249:605-11. [PMID:
9731183 DOI:
10.1006/bbrc.1998.9204]
[Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To investigate the role of hematopoietic stem cells in the pathogenesis of IgA nephropathy, T-cell-depleted bone marrow cells for IgA nephropathy-prone ddY mice were transplanted into C57BL/6j (B6) mice pretreated with cyclophosphamide. In the 12th week after bone marrow transplantation, transplanted bone marrow cells had successfully regenerated. In B6 recipients of T-cell-depleted allogeneic bone marrow cells for ddY mice ([ddy-->B6]), mesangial IgA and C3 deposits were significantly more intense than those in B6 mice receiving syngeneic bone marrow cells of B6 mice ([B6-->B6]). The serum IgA level in [ddY-->B6] mice was higher than that in [B6-->B6] mice. Molecular profile analysis of serum IgA revealed that the serum concentration of macromolecular IgA was increased in [ddY-->B6], but not in [B6-->B6] mice. These data suggest that disorders programmed at the level of BMCs are involved in the pathogenesis of IgA nephropathy by increasing circulating levels of macromolecular IgA.
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