Abstract:
:The value of percutaneous core needle biopsy in the immunohistological evaluation of renal allograft dysfunction was studied in 72 consecutive biopsies performed in 42 patients. The phenotypes of infiltrating cells mediating graft destruction were identified with monoclonal antibodies and immunoperoxidase staining techniques. Light microscopy, electron microscopy, and immunofluorescence staining were performed in all biopsies. Biopsies were divided into groups depending on their classification on the basis of standard histologic criteria, i.e., acute tubular necrosis (ATN), acute interstitial rejection, acute vascular rejection, chronic rejection and renal disease in native kidneys (RDNK) of nontransplant patients. Immunohistologic analysis of graft biopsies showed a significant increase in Leu 1 (pan-T cells), (P less than 0.001), Leu 2 (cytotoxic/suppressor cells) (P less than 0.001), and Leu 3 cells (P less than .05) in acute interstitial rejection. The expression of DR antigen was significantly increased in both acute (P less than .025) and chronic (P less than .05) rejection, when compared with the findings in ATN biopsies. Leu M1 (monocytes/activated T cells) and Leu 10 (B cells/macrophages) were significantly increased (P less than 0.05 and P less than .005, respectively) in acute interstitial rejection only. The helper/suppressor ratio of infiltrating cells showed no significant change in any clinopathologic category. There was no correlation between the cell populations infiltrating the graft and those monitored in the peripheral blood. Allograft mononuclear cell infiltrates in cyclosporine (CsA) vs. azathioprine-treated patients revealed significantly fewer Leu 2 (P less than .05) and Leu M1 (P less than .05) cell populations in CsA patients during acute rejection. In 32 of these 72 biopsies (44.4%), the biopsy results provided a direct contraindication to the use of steroids, by allowing differentiation between allograft rejection and other causes of graft dysfunction. A total of 38% of the biopsies yielded a histological diagnosis that contradicted the clinical pre-biopsy diagnosis. All allografts showing evidence of severe small vessel disease and/or antibody-mediated rejection eventually were lost. These data highlight the usefulness of needle biopsy material as a guide to the study of intragraft immune events and to clinical management of recipients.
journal_name
Transplantationjournal_title
Transplantationauthors
Waltzer WC,Miller F,Arnold A,Anaise D,Rapaport FTdoi
10.1097/00007890-198701000-00022subject
Has Abstractpub_date
1987-01-01 00:00:00pages
100-5issue
1eissn
0041-1337issn
1534-6080journal_volume
43pub_type
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