Mice selected on the basis of an acute inflammatory response (AIR) can provide information about the immunopathological mechanisms of glomerulonephritis. We studied the differences between mice selected for a maximal AIR (AIRmax that attract more polymorphonuclear cells to the site of injury) or a minimal AIR (AIRmin that attract more mononuclear cells) in an experimental model of IgA nephropat...

Proliferative glomerulonephritis with monoclonal IgG deposits (PGNMID) is a recently described entity. It is featured by glomerular nonorganized monoclonal immunoglobulin G deposits. Monoclonal IgG deposits are associated with glomerular proliferative lesions, mimicking different types of immune-complex glomerulonephritis. We report two classic cases of PGNMID which fulfilled all criteria of th...

INTRODUCTION Immunoglobulin (Ig) A nephropathy is the most common primary glomerulonephritis in the world and about 20% to 50% of patients with it develop progressive renal failure. There is considerable evidence to show that IgA nephropathy is influenced by genetic factors. The purpose of this review is to provide useful information concerning genetics of IgA nephropathy. METHODS AND RESULTS...

Proliferative glomerulonephritis with monoclonal immunoglobulin G deposit (PGNMID), a recently described pathologic entity in native kidneys, has been recognized in kidney transplant patients, where it can present as either recurrent or de novo disease. There is no definitive treatment to date, in either population. Here, we present two cases of PGNMID in kidney allografts that illustrate the c...

Membranoproliferative glomerulonephritis (GN) may be pathogenically associated with infection due to the hepatitis C virus (HCV) as many clinical cases have shown. The potential relationship between the HCV and IgA GN, by contrast, has been suggested only in isolated cases. IgA nephropathy recurs in up to 50% of cases after renal transplantation, but it is uncommon for it to appear as a de novo...

I mmunoglobulin A nephropathy (IgAN) is defined by the predominant deposition of IgA in the glomerular mesangium. Light microscopic appearances and clinical features can vary considerably, reflecting the many patterns of histopathologic injury seen in this glomerulonephritis (GN) Closely associated with IgAN is Henoch-Schönlein purpura (HSP), a smallvessel systemic vasculitis characterized by s...

Henoch-Schönlein purpura (HSP) is a systemic small-vessel leucocytoclastic vasculitis with deposition of immune complexes containing Immunoglobulin A (IgA). IgA Nephropathy (IgAN) is a glomerulonephritis caused by mesangial deposition of IgA. The onset of HSP, but not IgAN, has been linked to influenza vaccination. We report the first case of HSP with glomerular involvement, in a renal transpla...

IgA nephropathy (IgAN), a mesangial proliferative glomerulonephritis (GN), is the most common GN in all parts of the world where renal biopsy is widely practiced. It is unique among glomerular diseases in being defined by immunohistochemical findings, i.e., mesangial deposition of IgA, rather than by light microscopy. Because the clinical features of IgAN were discussed in 1997 (1), we focus on...

BACKGROUND/AIMS The purpose of this study was to investigate the expression of urokinase-type plasminogen activator (uPA), uPA receptor (uPAR), and plasminogen activator inhibitor (PAI)-1 on podocytes in immunoglobulin A (IgA) glomerulonephritis (GN). METHODS Renal biopsy specimens from 52 IgA GN patients were deparaffinized and subjected to immunohistochemical staining for uPA, PAI-1, and uP...