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Immunopathogenesis of idiopathic nephrotic syndrome. Cell Mol Immunol 2022; 19:1429-1431. [PMID: 35986135 PMCID: PMC9708844 DOI: 10.1038/s41423-022-00908-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 07/20/2022] [Indexed: 01/27/2023] Open
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2
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Le podocyte perd pieds sous l’effet du sorafenib. Nephrol Ther 2022. [DOI: 10.1016/j.nephro.2022.07.258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Altérations du métabolisme lipidique du podocyte dans le syndrome néphrotique idiopathique : impact de CMIP. Nephrol Ther 2021. [DOI: 10.1016/j.nephro.2021.07.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Néphrotoxicité des thérapies ciblées anti-angiogéniques : impact direct du sorafenib sur le podocyte. Nephrol Ther 2020. [DOI: 10.1016/j.nephro.2020.07.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Recherche de marqueurs in vitro spécifiques de la récidive post-greffe de la hyalinose segmentaire et focale. Nephrol Ther 2018. [DOI: 10.1016/j.nephro.2018.07.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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6
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Syndrome néphrotique à lésions glomérulaires minimes associé à l’infection par le VIH : à propos de huit cas. Nephrol Ther 2017. [DOI: 10.1016/j.nephro.2017.08.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Impact du rituximab sur les populations lymphocytaires T au cours du syndrome néphrotique à lésions glomérulaires minimes. Nephrol Ther 2016. [DOI: 10.1016/j.nephro.2016.07.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Identification de facteurs de récidive post-greffe du syndrome néphrotique idiopathique par analyse du sécrétome ex vivo des PBMC de patients. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Un traitement de 6mois par Hydréa réduit la protéinurie et le DFG des patients drépanocytaires. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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c-mip altère la régulation de CD20 et l’activation du lymphocyte B. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Effet du rituximab sur les perturbations immunologiques du syndrome néphrotique idiopathique à rechute. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Caractérisation phénotypique et fonctionnelle des souris invalidées pour le gène c-mip dans les podocytes. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Syndrome néphrotique paranéoplasique et maladie de Hodgkin : à propos de c-mip. Rev Med Interne 2014. [DOI: 10.1016/j.revmed.2014.10.345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Glomérulonéphrite extra-membraneuse et maladies hépatiques dysimmunitaires. Nephrol Ther 2014. [DOI: 10.1016/j.nephro.2014.07.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Modifications de la signalisation proximale du podocyte induites par l’adriamycine. Nephrol Ther 2013. [DOI: 10.1016/j.nephro.2013.07.362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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C-mip est un régulateur négatif de l’activation T. Nephrol Ther 2013. [DOI: 10.1016/j.nephro.2013.07.363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Implication de c-mip dans le syndrome néphrotique associé aux thérapies anti-VEGF. Nephrol Ther 2013. [DOI: 10.1016/j.nephro.2013.07.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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[Kidney involvement in sarcoidosis]. Rev Med Interne 2012; 34:538-44. [PMID: 23154110 DOI: 10.1016/j.revmed.2012.10.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 09/26/2012] [Accepted: 10/08/2012] [Indexed: 12/20/2022]
Abstract
Sarcoidosis is a chronic multisystemic inflammatory disorder of unknown etiology, characterized by the presence of non-necrotizing epithelioid and giant cell granulomas. Various renal manifestations have been reported in patients with sarcoidosis. Disorders of bone and mineral metabolism related to the overexpression of 25-hydroxyvitamin-D1α-hydroxylase by alveolar and granuloma macrophages are frequently associated with sarcoidosis. Hypercalcemia and hypercalciuria are a major cause of renal injury predisposing to pre renal azotemia, acute tubular necrosis, nephrolithiasis and nephrocalcinosis. Therapeutic management of hypercalcemia includes preventive measures (limited sunlight exposure, limited vitamin D and calcium intakes, and adequate hydration) and specific treatment in cases of severe hypercalcemia (corticosteroid therapy, chloroquine or ketoconazole). Granulomatous tubulointerstitial nephritis is the most common renal lesion associated with sarcoidosis leading to end stage renal disease in some patients. In these cases, interstitial fibrosis seems to appear early in the course of sarcoidosis and is a major prognostic factor requiring rapid corticosteroid therapy to reduce the risk of severe renal impairment. Membranous nephropathy seems to be the most frequent glomerular disease that may occur in association with sarcoidosis. Among kidney allograft recipients, the risk of recurrence of granulomatous tubulointerstitial nephritis is high and may have a negative impact on the graft survival.
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19
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Experimental pathology. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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20
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Minimal change nephrotic syndrome and classical Hodgkin's lymphoma: Report of 21 cases and review of the literature. Kidney Int 2006; 69:2251-60. [PMID: 16672913 DOI: 10.1038/sj.ki.5000341] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Minimal change nephrotic syndrome (MCNS) is described as a paraneoplastic manifestation of classical Hodgkin's lymphoma (cHL). We reassessed the pathophysiological and clinical significance of this association. A retrospective study was performed to evaluate a cohort of adult patients who developed MCNS and cHL. Twenty-one patients recruited in 15 French centers were analyzed. cHL was associated with inflammatory and general symptoms in most cases. The morphological subtype was predominantly nodular sclerosis (71.4%). MCNS appeared before the diagnosis of lymphoma in eight patients (38.1%) and in this case, it was characterized by a nephrotic syndrome (NS) frequently resistant (50%) or dependent (12.5%) to steroid treatment. Interestingly, diagnosis (3-120 months after MCNS) and effective treatment of the hemopathy were associated with the disappearance of the MCNS. cHL was diagnosed before MCNS in nine patients (42.9%), and in this case, glomerulopathy was associated with cHL relapse in 55.5% of cases. In four patients (19%), the two diseases occurred simultaneously. Extensive immunohistochemical study of lymph nodes was performed in eight patients and did not reveal particular features. In conclusion, MCNS associated with cHL is frequently dependent or resistant to steroid regimen, but remission of NS is obtained with the cure of lymphoma.
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21
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[Recent approaches to the pathogenesis of minimal change nephrotic syndrome]. NEPHROLOGIE 2002; 23:367-9. [PMID: 12500423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Clinical and experimental observations suggest that lipoid nephrosis (Minimal change nephrotic syndrome) results from T cell dysfunction due to still unknown mechanisms. By substractive screening library, we identified 84 transcripts, of which 42 correspond to known genes, 12 match with proteins of yet unknown function and 30 are unknown clones. Among the 42 known transcripts, at least 18 are closely involved in the T-Cell Receptor mediated signaling cascades. This includes genes encoding components of the T-Cell Receptor and proteins associated with the cytoskeleton scaffold, as well as transcription factors. During the relapse phase, we have detected very low levels of IL12R beta 2 mRNA suggesting that the T-cell activation evolves toward a Th2 phenotype. Thus, the combination of substractive cloning and differential screening constitutes an efficient approach to identify genes likely involved in the pathophysiology of MCNS.
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Isolation of cDNAs encoding immunogenic regions of gp330, the autoantigen involved in Heymann nephritis. Clin Exp Immunol 1996; 104:312-7. [PMID: 8625526 PMCID: PMC2200411 DOI: 10.1046/j.1365-2249.1996.35741.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Active Heymann nephritis is an organ-specific autoimmune disease of the rat kidney, characterized by the formation of immune complexes located subepithelially in the glomerulus. The T cell-mediated humoral immune response is directed to gp330, a large renal epithelial glycoprotein which is expressed both in the proximal tubule and on glomerular podocytes. In this study polyclonal rabbit antibodies raised against affinity-purified rat gp330 were used to screen a lambda-gt11 expression library of the rat kidney. One cDNA clone that was recognized by the antibodies coded for a 2.7-kb protein that is not described in the sequence database of GenBank/EMBL. Two other groups of cDNA clones were identified that displayed similarity with several members of the low-density lipoprotein (LDL)-receptor gene family to which gp330 belongs. By comparison with the gp330-cDNA sequence, these two clones could be mapped to two remote areas on the extracellular domain of gp330. The antigenicity of these two areas is in accordance with their location in highly hydrophilic regions on the extracellular domain of gp330. The cDNA clones described in this study may represent two main immunodominant regions on rat gp330.
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Comparative immunochemistry and ontogeny of two closely related coated pit proteins. The 280-kd target of teratogenic antibodies and the 330-kd target of nephritogenic antibodies. THE AMERICAN JOURNAL OF PATHOLOGY 1993; 142:1654-67. [PMID: 8494057 PMCID: PMC1886914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We have previously shown that monoclonal antibodies specific for a 280-kd protein (gp280) concentrated within the coated pits of renal and yolk sac brush border-induced fetal malformations, whereas antibodies specific for gp330, another coated pit protein with a similar distribution, had no deleterious effect on embryonic development. In this study, we show that gp280 and gp330 are closely related proteins, as indicated by: 1) similarities in peptide maps obtained after cyanogen bromide cleavage, 2) immunological cross-reactivity related to a minor contingent of antibodies that do not have teratogenic activity, and 3) asynchronous but related expressions during ontogenesis. During the early stages of development, the expression of the two glycoproteins was limited to (gp330) or predominant in (gp280) the clathrin-coated pits and intermicrovillar areas. In the pre-implantation embryo, gp330 was expressed by trophectodermal cells, which became negative in day-6 embryos trapped in endometrial infoldings. At this stage, gp280 and gp330 were both simultaneously detectable at the apical pole of the first entoblastic cells and remained expressed by the brush border of visceral yolk sac epithelial cells until the end of pregnancy. In addition, gp330 was expressed by amniotic cells and neurectodermal structures. During nephrogenesis, in contrast, the expression of gp280 and gp330 by the intermicrovillar areas of the proximal tubule cell was the result of a complex maturation process. gp280 and gp330 were diffusely distributed in S-shaped bodies in the presumptive areas of the glomerulus, proximal tubule, and distal tubule (gp330). During development of the nephron, the pattern of expression became progressively restricted to the proximal tubule and glomerulus (gp330), and selective localization in the intermicrovillar areas was only achieved in filtrating nephrons.
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[Teratogenesis and autoimmunity: significance of an experimental murine model for human pathology]. BULLETIN DE L'ACADEMIE NATIONALE DE MEDECINE 1993; 177:613-26; discussion 626-7. [PMID: 8364759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Fetal malformations constitute a major problem of public health. Unfortunately the known causes do not account for more than 50% of the cases observed. The potential role of immune mechanisms is suggested by experimental studies in the rat indicating that antibodies reactive with the yolk sac induce fetal malformations. In this study we show that these antibodies are specific for a 280 kDa protein expressed only in the kidney and the yolk sac by cell structures associated with the formation of endocytic vesicles. We further show that a similar protein is expressed in man by the yolk sac, the kidney and the trophoblasts. The possible role in pathology of antibodies against the human protein is discussed.
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25
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Monoclonal antibodies to glomerular antigens. Nephrol Dial Transplant 1992; 7 Suppl 1:9-15. [PMID: 1362802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023] Open
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Coexpression in humans by kidney and fetal envelopes of a 280 kDa-coated pit-restricted protein. Similarity with the murine target of teratogenic antibodies. THE AMERICAN JOURNAL OF PATHOLOGY 1992; 140:33-44. [PMID: 1731529 PMCID: PMC1886245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Experimental studies performed in the rat over the last three decades have shown that antibodies raised against kidney or yolk sac, which, in the rat, surrounds the embryo and serves as a placenta during the major part of pregnancy, induced fetal resorptions or malformations. It is generally considered that the teratogenic antibodies decrease internalization and degradation of maternal proteins by yolk sac epithelial cells leading to an inadequate supply of nutriments to the embryo. These observations demonstrating the pathogenic role of antibodies to fetal envelopes are of great potential interest in clinical pathology since most cases of fetal malformations in humans are of unknown cause. The authors have recently shown that the key teratogenic antibodies in the murine system were directed against a 280 kDa-coated pit protein (gp280) specific for the brush border of epithelial cells lining the renal proximal tubule and the yolk sac. This observation allows for the unique opportunity to search for a similar system in humans. In this study, the presence in humans of a protein closely related to murine gp280 is shown, as indicated by extensive immunologic crossreactivity, close apparent molecular weights, strong homology of bidimensional peptide maps, and restricted distribution at the organ and subcellular level. In addition to kidney and yolk sac, human gp280 was also detected within the coated pits of the placental syncytiotrophoblastic cells. When introduced in an in vitro rat embryo culture system, antibodies to human gp280-induced developmental anomalies in a dose-dependent manner. These observations indicate that the antigenic component of the murine model is present in humans and can give rise to heterologous antibodies that cause developmental anomalies, suggesting that the experimental model might be of significance in human pathology.
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MESH Headings
- Animals
- Antibodies, Monoclonal/immunology
- Antibodies, Neoplasm/immunology
- Cells, Cultured
- Coated Pits, Cell-Membrane/chemistry
- Coated Pits, Cell-Membrane/immunology
- Congenital Abnormalities/etiology
- Cross Reactions
- Electrophoresis, Polyacrylamide Gel
- Embryo, Mammalian/chemistry
- Embryo, Mammalian/cytology
- Extraembryonic Membranes/chemistry
- Extraembryonic Membranes/ultrastructure
- Female
- Fluorescent Antibody Technique
- Humans
- Immunoblotting
- Immunohistochemistry
- Kidney Tubules, Proximal/chemistry
- Kidney Tubules, Proximal/ultrastructure
- Male
- Membrane Glycoproteins/analysis
- Membrane Glycoproteins/immunology
- Microscopy, Immunoelectron
- Microvilli/chemistry
- Microvilli/ultrastructure
- Peptide Mapping
- Rats
- Rats, Inbred Strains
- Yolk Sac/chemistry
- Yolk Sac/ultrastructure
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Gallium67 scintigraphy in the diagnosis of glomerulonephritis. Clin Nephrol 1988; 30:128-33. [PMID: 3180521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
To assess the role of gallium-67 (67Ga) scintigraphy in the diagnosis of glomerular diseases, we performed the following technique in 39 patients with glomerulonephritis (GN) who underwent simultaneous Ga scan and histologic examination. 72 hours after IV injection of Ga citrate (2 mCi), isotopic kidney activity (normally undetectable) was compared to the activity of the liver and quantified as follows: less than (1+), equal to (2+) or greater than (3+) that of the liver. Renal biopsy was performed at the same time to evaluate the type of the GN and to quantify interstitial cellular infiltration. Proteinuria, serum albumin and creatinine were measured. There was a significant correlation between the level of 67Ga kidney activity and the degree of proteinuria and hypoalbuminemia. On the contrary, no correlation was found between isotopic activity and the degree of renal failure or the degree of interstitial cellular infiltration. Increased kidney 67Ga activity did not appear characteristic of a specific histologic type of GN. Increased glomerular permeability may alter renal uptake of Ga; therefore 67Ga scanning does not appear to contribute significantly to the diagnosis and the follow-up of either primary or secondary GN.
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Characterization of a 280-kD protein restricted to the coated pits of the renal brush border and the epithelial cells of the yolk sac. Teratogenic effect of the specific monoclonal antibodies. J Exp Med 1988; 167:213-8. [PMID: 2891781 PMCID: PMC2188808 DOI: 10.1084/jem.167.1.213] [Citation(s) in RCA: 119] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Intermicrovillar areas and apical vesicles characterized by an extensive clathrin coat can be identified in some epithelial cell types. We describe a 280-kD protein, characteristic of these areas in the proximal tubule brush border and epithelial cells of the visceral yolk sac. When injected to 9-d pregnant rats, mAbs to the 280-kD protein regularly induced fetal resorption and/or malformations. Antibodies to a 330-kD protein that is also coated-pit-restricted had no effect. Our observations point to a key function for p280 and suggest that immunity to specific constituents of the receptor-mediated endocytotic system may be involved in the induction of fetal abnormalities.
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Immunological segmentation of the rabbit distal, connecting, and collecting tubules. THE AMERICAN JOURNAL OF PHYSIOLOGY 1987; 252:F412-22. [PMID: 3548436 DOI: 10.1152/ajprenal.1987.252.3.f412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
To obtain monoclonal antibodies (MAB) specific for the different cell types of distal and collecting tubules, BALB/c mice were immunized with cell suspensions highly enriched in cells from the distal segments of the rabbit nephron. Nine MAB were selected and cloned. Four groups could be identified on the basis of double-labeling immunofluorescence (IF) on frozen kidney sections and on microdissected tubules. In addition, binding specificity at the cellular level was studied by immunoelectronmicroscopy (IEM) for selected MAB. A single MAB (group 1) was specific for distal bright cells and a subpopulation of cortical ascending limb cells. Six MAB (group 2) reacted with connecting and collecting tubules. Five of these (group 2A) had similar binding patterns and reacted identically with the two tubular segments. The MAB studied by IEM was specific for connecting and principal cells. One antibody (group 2B) reacted with only a fraction of the cells associated with the connecting tubule (CNT), but with all cells of the cortical collecting tubule (CCT). By IEM, this antibody was found to be specific for intercalated cells in CNT and bound both principal and intercalated cells of the CCT. Two MAB (group 3) reacted with antigen(s) expressed by the various terminal segments of renal tubule. MAB of groups 1 and 2A, which define distal bright cells and connecting-principal cells from the CNT-CCT, respectively, were used for cell fractionation experiments. Heterogeneous rabbit cortical cells were first incubated with the selected MAB. MAB-bearing renal cells were separated on plastic dishes previously coated with an affinity-purified goat anti-mouse immunoglobulin. Using these procedures it was possible to obtain highly purified subpopulations of distal, bright, or connecting-principal cells.
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