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Updated: Aug 24, 2026
Mouse Model of Alloimmune-induced Vascular Rejection and Transplant Arteriosclerosis
Published on: May 17, 2015
The pathobiology of chronic allograft nephropathy: immune-mediated damage and accelerated aging
Simone A Joosten1, Cees van Kooten, Yvo W J Sijpkens
1Department of Nephrology, Leiden University Medical Center, Leiden, The Netherlands. s.a.joosten@lumc.nl
Abstract:
Chronic allograft nephropathy includes chronic calcineurin nephrotoxicity, recurrent and de novo glomerulonephritis and a group of disorders with graft dysfunction of unknown etiology designated chronic rejection. Review of risk factors of the latter category show that the chronic rejection lesions emerge in organs that have undergone injury. Despite the relevance of nonalloantigen-dependent progression factors in the tissue injury, alloantigen-dependent factors predominate in the pathogenesis. Lately, B cell responses have received increasing interest in transplant rejection and include responses against both major histocompatibility complex (MHC) and tissue-specific antigens, mainly on the endothelium and in the glomeruli. These humoral responses are thought to be involved in the development of vascular and glomerular lesions. Furthermore, at the tissue level, markers of senescence are found in the tubular epithelium contributing to the lesions of tubular atrophy and interstitial fibrosis.
Insights
Chronic allograft nephropathy involves various causes, including chronic rejection where prior injury exacerbates graft dysfunction. Alloantigen-dependent factors, particularly B cell responses, are key drivers of these complex kidney transplant complications.
Area of Science:
- Nephrology
- Transplantation Immunology
Background:
- Chronic allograft nephropathy encompasses diverse conditions, including calcineurin nephrotoxicity, glomerulonephritis, and chronic rejection of unknown etiology.
- Chronic rejection lesions develop in injured organs, with nonalloantigen-dependent factors contributing to tissue injury, but alloantigen-dependent factors dominating pathogenesis.
Purpose of the Study:
- To review the risk factors and pathogenesis of chronic allograft nephropathy, focusing on chronic rejection.
- To highlight the emerging role of B cell responses in transplant rejection and their contribution to graft lesions.
Main Methods:
- Review of existing literature on chronic allograft nephropathy and chronic rejection.
- Analysis of risk factors and pathogenetic mechanisms, including alloantigen-dependent and independent pathways.
Main Results:
- Chronic rejection lesions are linked to prior organ injury.
- B cell responses against major histocompatibility complex (MHC) and tissue-specific antigens are implicated in vascular and glomerular damage.
- Senescence markers in tubular epithelium contribute to tubular atrophy and interstitial fibrosis.
Conclusions:
- Alloantigen-dependent factors, especially B cell-mediated humoral responses, play a predominant role in the pathogenesis of chronic allograft nephropathy.
- Understanding these mechanisms, including B cell involvement and cellular senescence, is crucial for managing kidney transplant outcomes.
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