[New findings in the pathogenesis of chronic glomerulonephritis]

30 untreated patients with membranoproliferative glomerulonephritis (MPGN) with isolated urinary syndrome were examined for cellular and humoral immunity. There was a significant (p < 0.05) reduction of the number of T-helpers/inductors (T4/4B4) and early undifferentiated lymphoid precursors with the marker enzyme. T-lymphocytes with markers T1, T3, T11, T12 as well as T-suppressors/cytotoxic cells (T8/2H4) occurred in normal quantities. IL-1 and IL-2 production was inhibited. Mature T-lymphocytes with markers T11, suppressors T8, early precursors of T-cells (T6) were higher in number in development of dystrophic changes in tubular epithelium. It is suggested that T-cell factor may be involved in nephron impairment observed in MPGN patients. Humoral immunity disorders are of the secondary nature.