immuno-histological assessment of sub-clinical acute and borderline rejection in renal allograft recipients: data from a transplant center in india
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2015
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Abstract
This single-center study was carried out on living related and unrelated renal transplant recipients (RTRs) to evaluate the usefulness of surveillance biopsies in monitoring stable renal allografts using immuno-histological markers for immune-activation. This is a prospective, longitudinal study. Protocol biopsies of 60 RTRs with stable graft function were evaluated at three, six and 12 months post-transplant. Immuno-histological evaluation was carried out using immune-activation markers (perforins, granzyme and interleukin-2R), phenotypic markers (CD-3 and CD-20), viral markers and C4d. The demographic and clinical profile was recorded for each patient. All cases of acute sub-clinical rejection (SCR) were treated and borderline SCR cases were followed-up without treatment. SCR at three and six months post-transplant was evident in 16.7% and 3.7% of RTRs, respectively. Positive statistical association of SCR was seen with HLA-DR mismatches, whereas patients receiving induction therapy and tacrolimus-based immunosuppression exhibited a lower incidence of SCR. T cell phenotype with persistent expression of immune-activation markers exhibited positive statistical association with interstitial fibrosis and tubular atrophy at 12-month follow-up biopsy. The mean creatinine levels were significantly lower in the protocol biopsy group than the non-protocol biopsy group. No significant difference was found between the mean creatinine levels of the SCR group after treatment and the non-SCR cases within the protocol biopsy group. Early treatment of sub-clinical acute rejection leads to better functional outcomes. However, persistent immune-activation is associated with chronicity and may have implications on long-term graft survival.
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badwal2015saudiimmuno-histological
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| Authors | ;Sonia Badwal;Arun Kumar;A K Hooda;P P Varma |
| Journal | 15th ibero-american conference on software engineering, cibse 2012 |
| Year | 2015 |
| DOI |
10.4103/1319-2442.168647
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