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  • Title: [Usefulness of HLA-DR expression in tubular cells of transplanted kidney for the diagnosis of rejection].
    Author: Almirall J, Solé M, Campistol JM, Bru C, Andreu J.
    Journal: Med Clin (Barc); 1996 Oct 19; 107(13):481-5. PubMed ID: 9045012.
    Abstract:
    BACKGROUND: Fine needle aspiration is a useful technique as a monitorization method after kidney transplantation for diagnosis of rejection. In addition to the cells of the intrarenal inflammatory infiltrate, the material obtained contains an important quantity of parenchymatous renal cells. The expression of class II HLA antigens in renal tubular cells has been related with episodes of rejection. The aim of this study was to determine the clinical usefulness of fine needle aspiration in diagnosis and control of kidney transplant rejection. PATIENTS AND METHODS: HLA-DR expression of renal tubular cells obtained in 155 fine needle aspirations carried out in 36 consecutive kidney transplantations were prospectively studied. The technique used was that of alkaline phosphatase. The study period included the two months following the graft. RESULTS: Rejection was considered to occur on expression of HLA-DR in more than 20% of tubular cells and as thus this method showed a sensitivity and specificity of 78 and 79%, respectively. Likewise, a good correlation was observed between the persistence of tubular HLA-DR expression following rejection treatment and severity of the same. The group of patients with stable renal function presented a slight, transitory expression within the first 10-12 days after transplantation. CONCLUSIONS: HLA-DR expression of the tubular cells obtained by aspiration puncture is a useful method for the diagnosis and control of kidney transplant rejection.
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