[The morphological characteristics of psoriatic nephropathy].

Three variants of psoriatic nephropathy are distinguished on the basis of light microscopical and immunohistochemical study of 23 cases/20 kidney biopsies and 3 autopsy cases/: glomerulonephritis, amyloidosis and minimal kidney alterations. Chronic glomerulonephritis is mainly of a mesangioproliferative type with fixation of IgA and C3 on the mesangium and basal membranes of glomerular capillaries. Psoriatic amyloidosis has morphologically, all the features of acquired amyloidosis/AA-amyloidosis/. Thus psoriatic nephropathy is a reflection of a disturbed homeostasis.