Solubilization of intraglomerular deposits of serum proteins by fresh human sera or gamma-globulin in patients with diabetic nephropathy.
The solubilization of renal deposits of IgG and other serum proteins by fresh human sera or human gamma-globulin was studied in patients with diabetic nephropathy. Renal biopsy specimens were from 10 patients with diabetic nephropathy. These specimens were incubated with fresh sera obtained from the same patients and healthy adults or human gamma-globulin at 37 degrees C for 1 hr in plastic test tubes. The sections were stained with FITC-labeled heavy chain specific anti-human IgG, alpha 1-antitrypsin, haptoglobin and beta-lipoprotein antisera, and then examined with a fluorescent microscope. It was demonstrated that fresh human sera or gamma-globulin significantly solubilized glomerular deposits of IgG and other serum proteins in patients with diabetic nephropathy. It was postulated that solubilization of protein deposits in glomeruli requires the same substances detected in vitro in the kidney tissues from patients with diabetic nephropathy.
D000328:Adult; D001790:Blood Physiological Phenomena; D001798:Blood Proteins / Q000302:isolation & purification*; D003928:Diabetic Nephropathies / Q000097:blood / Q000378:metabolism* / Q000473:pathology; D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D007074:Immunoglobulin G / Q000378:metabolism; D007678:Kidney Glomerulus / Q000032:analysis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012995:Solubility; D005719:gamma-Globulins / Q000494:pharmacology*
D001798:Blood Proteins; D007074:Immunoglobulin G; D005719:gamma-Globulins