title: Acute interstitial nephritis. A case characterized by increase in serum IgG, IgM, and IgE concentrations. Eosinophilia, and IgE deposition in renal tubules.
abstract: A case of acute interstitial nephritis with a distinct immunopathologic pattern was seen. The relevant findings included elevated levels of serum IgG, IgM, and IgE; persistent eosinophilia; prominent granular and electron-dense depositions of IgE and C3 in renal tubules, as demonstrated by direct immunofluorescent and electron microscopic procedures; persistent failure to demonstrate anti-basement membrane antibodies (both glomerular and tubular); and hypocomplementemia. The findings in our case suggest a type of acute interstitial nephritis with a somewhat different clinical outlook. In this respect, serial assays of complement components and IgE in serum and kidney tissue and determinations of circulating anti-basement membrane antibodies (both glomerular and tubular) may be of particular importance.
mesh_terms: D000208:Acute Disease; D003176:Complement C3 / Q000032:analysis; D004802:Eosinophilia / Q000276:immunology*; D005260:Female; D006801:Humans; D007073:Immunoglobulin E / Q000032:analysis / Q000378:metabolism; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis*; D007687:Kidney Tubules, Proximal / Q000276:immunology* / Q000473:pathology; D008875:Middle Aged; D009395:Nephritis, Interstitial / Q000276:immunology*
chemical_list: D003176:Complement C3; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins; D007073:Immunoglobulin E