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KMID : 1134220140340040211
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Hanyang Medical Reviews
2014 Volume.34 No. 4 p.211 ~ p.216
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Current Issues in the Treatment of Chronic Antibody-Mediated Rejection in Kidney Transplantation
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Chung Byung-Ha
Yang Chul-Woo
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Abstract
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Circulating alloantibodies are found in a substantial number of renal allograft recipients, and can induce chronic allograft injury, which is represented microscopically as transplant glomerulopathy and diffuse C4d deposition in peritubular capillaries (PTCs). Development of these injuries is significantly correlated with late allograft loss, and in this regard, it was included as a new disease entity named chronic antibody-mediated rejection (cAMR) in the updated Banff 05 classification. Usually, the prognosis of cAMR is poor and conventional immunosuppressants mainly targeting T cell-mediated immunity cannot prevent or reverse it. Therefore, some researchers have suggested that therapies directed at the humoral response may be required for the treatment of cAMR. Recently, some reports have suggested that the combined use of rituximab and intravenous immunoglobulin (IVIg) therapy may be useful for the treatment of cAMR. Our previous study also showed that rituximab and IVIg combination therapy effectively delayed the progression of cAMR. We administered rituximab and IVIg combination therapy to 18 biopsy-proven cAMR patients and found that it significantly slowed the decline of the estimated glomerular filtration rate. However, this effect was limited in patients with heavy proteinuria, and dissipated in all patients by 1 year post-treatment. Recently, new drugs targeting the humoral immune system, such as bortezomib and eculizumab, have been tested for the treatment of cAMR. However, the studies still lack definitive data in terms of successful treatment of cAMR. We speculate that those therapies will compensate for the limitation of previous anti-humoral therapies for cAMR.
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KEYWORD
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Kidney Transplantation, Chronic Rejection, Donor-Specific Antibodies, Pathology, Therapeutics
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