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  • Title: Severe alpha1-antitrypsin deficiency (PiZ homozygosity) with membranoproliferative glomerulonephritis and nephrotic syndrome, reversible after orthotopic liver transplantation.
    Author: Elzouki AN, Lindgren S, Nilsson S, Veress B, Eriksson S.
    Journal: J Hepatol; 1997 Jun; 26(6):1403-7. PubMed ID: 9210630.
    Abstract:
    BACKGROUND/AIMS: Nephropathy associated with alpha1-antitrypsin deficiency is assumed to be an unusual entity. We describe the case of a 23-year-old woman with severe alpha1-antitrypsin (PiZ homozygosity) deficiency who developed hepatic cirrhosis in childhood, and glomerulonephritis and nephrotic syndrome in adult life. METHODS/RESULTS: A renal biopsy was consistent with membranoproliferative glomerulonephritis. An immunofluorescence study revealed the presence of alpha1-antitrypsin (PiZ) in the subendothelial region of the glomerular basement membrane. The renal disease was reversible after orthotopic liver transplantation. CONCLUSIONS: The presence of abnormal PiZ protein in the subendothelial region of the glomerular basement membrane may suggest a possible role for this protein in the pathogenesis of glomerulonephritis. The case should add impetus to the search for alpha1-antitrypsin deficiency in any patient presenting with combined liver and renal disease, in the absence of evidence of hepato-renal syndrome, and illustrates that liver transplantation alone may reverse the nephropathy associated with alpha1-antitrypsin deficiency.
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