scholarly journals Podocyte Injury in Lupus Nephritis

2019 ◽  
Vol 8 (9) ◽  
pp. 1340 ◽  
Author(s):  
Hamza Sakhi ◽  
Anissa Moktefi ◽  
Khedidja Bouachi ◽  
Vincent Audard ◽  
Carole Hénique ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
Glomerular Injury ◽  
Crescent Formation ◽  
Podocyte Injury ◽  
Inflammatory Processes ◽  
Lupus Podocytopathy ◽  
Parietal Epithelial Cells ◽  
Lupus Glomerulonephritis

Systemic lupus erythematosus (SLE) is characterized by a broad spectrum of renal lesions. In lupus glomerulonephritis, histological classifications are based on immune-complex (IC) deposits and hypercellularity lesions (mesangial and/or endocapillary) in the glomeruli. However, there is compelling evidence to suggest that glomerular epithelial cells, and podocytes in particular, are also involved in glomerular injury in patients with SLE. Podocytes now appear to be not only subject to collateral damage due to glomerular capillary lesions secondary to IC and inflammatory processes, but they are also a potential direct target in lupus nephritis. Improvements in our understanding of podocyte injury could improve the classification of lupus glomerulonephritis. Indeed, podocyte injury may be prominent in two major presentations: lupus podocytopathy and glomerular crescent formation, in which glomerular parietal epithelial cells play also a key role. We review here the contribution of podocyte impairment to different presentations of lupus nephritis, focusing on the podocyte signaling pathways involved in these lesions.

Mesangial lupus nephritis with associated nephrotic syndrome.

1997 ◽  
Vol 8 (7) ◽  
pp. 1199-1204
Author(s):  
N Stankeviciute ◽  
W Jao ◽  
A Bakir ◽  
J P Lash
Keyword(s):  
Nephrotic Syndrome ◽  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
World Health ◽  
Clinical Tool ◽  
Laboratory Findings ◽  
Glomerular Lesion ◽  
Health Organization ◽  
Lupus Glomerulonephritis ◽  
Nephrotic Range Proteinuria

Patients with mesangial proliferative lupus glomerulonephritis (World Health Organization class II) are generally believed to have only mild to moderate proteinuria and normal renal function. However, there have been several reports of patients with mesangial lupus with nephrotic-range proteinuria. In this report, we present two additional cases and review the literature. Of seven reported cases, persistent nephrotic syndrome was observed in four, morphologic transformation occurred in three, and all but one presented with varying degrees of azotemia. These cases reinforce the concept that in systemic lupus erythematosus, laboratory findings may not correlate well with the underlying glomerular lesion, and therefore, the renal biopsy is an essential clinical tool in the approach to lupus nephritis.

scholarly journals Case Report: A Rare Case of Lupus Nephritis Associated With Mantle Cell Lymphoma

2021 ◽  
Vol 8 ◽  
Author(s):  
Daorina Bao ◽  
Ying Tan ◽  
Xiaojuan Yu ◽  
Bingjie Wang ◽  
Hui Wang ◽  
...  
Keyword(s):  
Renal Function ◽  
Lupus Nephritis ◽  
Mantle Cell Lymphoma ◽  
Lupus Erythematosus ◽  
Rare Case ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Lymphoid Cells ◽  
Glomerular Injury ◽  
Mantle Cell

In this research, we described a very rare case of secondary lupus nephritis associated with B-cell lymphoma. An 84-year-old man was hospitalized at our institute for lower extremity edema persisting for over 2 months. He was diagnosed with systemic lupus erythematosus based on clinical and laboratory criteria, which showed impaired renal function and nephrotic syndrome with predominant hematuria. Renal biopsy showed IV+V lupus nephritis with highly infiltrated lymphoid cells in the kidney. Secondary lupus nephritis was suspected based on the possible pathogenesis of glomerular injury due to mantle cell lymphoma. Low-dose dexamethasone, rituximab, and lenalidomide were immediately started on the patient, and his renal function was improved after the first cycle of chemotherapy.

Parietal epithelial cells role in repair versus scarring after glomerular injury

2020 ◽  
Vol 29 (3) ◽  
pp. 293-301 ◽  
Author(s):  
Hélène Lazareth ◽  
Olivia Lenoir ◽  
Pierre-Louis Tharaux
Keyword(s):  
Epithelial Cells ◽  
Glomerular Injury ◽  
Parietal Epithelial Cells

scholarly journals Cre recombinase toxicity in podocytes: a novel genetic model for FSGS in adolescent mice

2019 ◽  
Vol 317 (5) ◽  
pp. F1375-F1382 ◽  
Author(s):  
Madeleine Frahsek ◽  
Kevin Schulte ◽  
Arnaldo Chia-Gil ◽  
Sonja Djudjaj ◽  
Herdit Schueler ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Focal Segmental Glomerulosclerosis ◽  
Genetic Model ◽  
Transgenic Animals ◽  
Cre Recombinase ◽  
Young Age ◽  
Podocyte Injury ◽  
Sclerotic Lesions ◽  
Parietal Epithelial Cells ◽  
Time Point

Here, we show that inducible overexpression of Cre recombinase in glomerular podocytes but not in parietal epithelial cells may trigger focal segmental glomerulosclerosis (FSGS) in juvenile transgenic homocygous Pod-rtTA/LC1 mice. Administration of doxycycline shortly after birth, but not at any other time point later in life, resulted in podocyte injury and development of classical FSGS lesions in these mice. Sclerotic lesions were formed as soon as 3 wk of age, and FSGS progressed with low variability until 13 wk of age. In addition, our experiments identified Cre toxicity as a potentially relevant limitation for studies in podocytes of transgenic animals. In summary, our study establishes a novel genetic model for FSGS in mice, which exhibits low variability and manifests already at a young age.

scholarly journals Subtotal Ablation of Parietal Epithelial Cells Induces Crescent Formation

2012 ◽  
Vol 23 (4) ◽  
pp. 629-640 ◽  
Author(s):  
Eva-Maria Sicking ◽  
Astrid Fuss ◽  
Sandra Uhlig ◽  
Peggy Jirak ◽  
Henry Dijkman ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Crescent Formation ◽  
Parietal Epithelial Cells

The renal glomerulus

2015 ◽  
Author(s):  
Marlies Elger ◽  
Wilhelm Kriz
Keyword(s):  
Epithelial Cells ◽  
Mesangial Cells ◽  
Juxtaglomerular Apparatus ◽  
Cell Types ◽  
Stem Cell Population ◽  
Glomerular Filtration Barrier ◽  
Crescent Formation ◽  
Filtration Barrier ◽  
Parietal Epithelial Cells ◽  
Bowman's Capsule

The glomerulus performs its functions with three major cell types. Endothelial cells and visceral epithelial cells (podocytes) lie on the inside and outside of the glomerular basement membrane, and together these three structures form the glomerular filtration barrier. Mesangial cells sit in the axial region. Pathologies of all these regions and cell types can be identified. Parietal epithelial cells lining Bowman’s capsule participate in crescent formation, and at the tubular pole some of these cells seem to represent a stem cell population for tubular cells and podocytes. The extraglomerular mesangium and juxtaglomerular apparatus complete the description of the glomerular corpuscle. The structure of these elements, and how they relate to function, are illustrated in detail.

The correlation of urinary podocytes and podocalyxin with histological features of lupus nephritis

Lupus ◽  
2017 ◽  
Vol 27 (3) ◽  
pp. 484-493 ◽  
Author(s):  
D Ikuma ◽  
K Hiromura ◽  
H Kajiyama ◽  
J Suwa ◽  
H Ikeuchi ◽  
...  
Keyword(s):  
Lupus Nephritis ◽  
Lupus Erythematosus ◽  
Activity Index ◽  
Sandwich Elisa ◽  
Characteristic Analysis ◽  
Crescent Formation ◽  
Class V ◽  
Histological Features ◽  
Cellular Crescent ◽  
Class Iv

Objectives The objective of this study was to test the correlation of urinary podocyte number (U-Pod) and urinary podocalyxin levels (U-PCX) with histology of lupus nephritis. Methods This was an observational, cross-sectional study. Sixty-four patients were enrolled: 40 with lupus nephritis and 24 without lupus nephritis (12 lupus nephritis patients in complete remission and 12 systemic lupus erythematosus patients without lupus nephritis). Urine samples were collected before initiating treatment. U-Pod was determined by counting podocalyxin-positive cells, and U-PCX was measured by sandwich ELISA, normalized to urinary creatinine levels (U-Pod/Cr, U-PCX/Cr). Results Lupus nephritis patients showed significantly higher U-Pod/Cr and U-PCX/Cr compared with patients without lupus nephritis. U-Pod/Cr was high in proliferative lupus nephritis (class III±V/IV±V), especially in pure class IV (4.57 (2.02–16.75)), but low in pure class V (0.30 (0.00–0.71)). U-Pod/Cr showed a positive correlation with activity index ( r=0.50, P=0.0012) and was independently associated with cellular crescent formation. In contrast, U-PCX/Cr was high in both proliferative and membranous lupus nephritis. Receiver operating characteristic analysis revealed significant correlation of U-Pod/Cr with pure class IV, class IV±V and cellular crescent formation, and the combined values of U-Pod/Cr and U-PCX/Cr were shown to be associated with pure class V. Conclusions U-Pod/Cr and U-PCX/Cr correlate with histological features of lupus nephritis.

Sign in / Sign up

Export Citation Format

Share Document