Abstract
Human T-cell leukaemia virus type-1 (HTLV-1) is known to cause adult T-cell leukaemia. The prevalence of anti-HTLV-1 antibody in haemodialysis patients has been reported to be higher than that in the general population. The anti-HTLV-1 antibody-positive rate in patients with primary glomerulonephritis in the Nagasaki district, an endemic area of HTLV-1, was evaluated. The antibody-positive rates in patients with primary glomerulonephritis (9.9%) and in haemodialysis patients (18.4%) were significantly higher than the rate in general blood donors (6.6%). Of 142 patients with primary glomerulonephritis, 14 (9.9%) were positive for the antibody; histological evaluation of these patients showed minor glomerular abnormality in one, mesangial proliferative glomerulonephritis in eight (IgA nephropathy in six and non-IgA nephropathy in two), membranous nephropathy in three, and crescentic glomerulonephritis in two. Evaluation of 10 antibody-positive patients by immunofluorescent microscopy showed immunocomplex-type nephritis in nine, suggesting the involvement of HTLV-1-associated antigen in the development and progression of glomerulonephritis.
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