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Identification of the CD4+ T cell as a major pathogenic factor in ischemic acute renal failure
Melissa J. Burne, … , Michael P. O’Donnell, Hamid Rabb
Melissa J. Burne, … , Michael P. O’Donnell, Hamid Rabb
Published November 1, 2001
Citation Information: J Clin Invest. 2001;108(9):1283-1290. https://doi.org/10.1172/JCI12080.
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Article

Identification of the CD4+ T cell as a major pathogenic factor in ischemic acute renal failure

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Abstract

Leukocytes have been implicated in the pathogenesis of ischemic acute renal failure (ARF), but the roles of the individual cell types involved are largely unknown. Recent indirect evidence suggests that T cells may play an important role in a murine model of ARF. In the current study, we found that mice deficient in T cells (nu/nu mice) are both functionally and structurally protected from postischemic renal injury. Reconstitution of nu/nu mice with wild-type T cells restored postischemic injury. We then analyzed the contribution of the individual T cell subsets to postischemic injury and found that mice deficient in CD4+ T cells, but not mice deficient in CD8+ T cells, were significantly protected from ARF. Direct evidence for a pathophysiologic role of the CD4+ T cell was obtained when reconstitution of CD4-deficient mice with wild-type CD4+ T cells restored postischemic injury. In addition, adoptive transfers of CD4+ T cells lacking either the costimulatory molecule CD28 or the ability to produce IFN-γ were inadequate to restore injury phenotype. These results demonstrate that the CD4+ T cell is an important mediator of ischemic ARF, and targeting this cell may yield novel therapies.

Authors

Melissa J. Burne, Frank Daniels, Asmaa El Ghandour, Shamila Mauiyyedi, Robert B. Colvin, Michael P. O’Donnell, Hamid Rabb

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