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Malouch D, Berchel M, Dreanno C, Stachowski-Haberkorn S, Chalopin M, Godfrin Y, Jaffrès PA. Evaluation of lipophosphoramidates-based amphiphilic compounds on the formation of biofilms of marine bacteria. Biofouling 2023; 39:591-605. [PMID: 37584265 DOI: 10.1080/08927014.2023.2241377] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/11/2023] [Accepted: 07/21/2023] [Indexed: 08/17/2023]
Abstract
The bacteriostatic and/or bactericidal properties of few phosphoramide-based amphiphilic compounds on human pathogenic bacteria were previously reported. In this study, the potential of two cationic (BSV36 and KLN47) and two zwitterionic (3 and 4) amphiphiles as inhibitors of marine bacterial growth and biofilm formation were investigated. Results showed that the four compounds have little impact on the growth of a panel of 18 selected marine bacteria at a concentration of 200 µM, and up to 700 µM for some bacterial strains. Interestingly, cationic lipid BSV36 and zwitterionic lipids 3 and 4 effectively disrupt biofilm formation of Paracoccus sp. 4M6 and Vibrio sp. D02 at 200 µM and to a lesser extent of seven other bacterial strains tested. Moreover, ecotoxicological assays on four species of microalgae highlighted that compounds 3 and 4 have little impact on microalgae growth with EC50 values of 51 µM for the more sensitive species and up to 200 µM for most of the others. Amphiphilic compounds, especially zwitterionic amphiphiles 3 and 4 seem to be promising candidates against biofilm formation by marine bacteria.
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Affiliation(s)
- Dorsaf Malouch
- Univ Brest, CNRS, CEMCA UMR 6521, Brest, France
- Ifremer, Laboratoire Détection Capteurs et Mesures, Centre de Bretagne, Plouzané, France
| | | | - Catherine Dreanno
- Ifremer, Laboratoire Détection Capteurs et Mesures, Centre de Bretagne, Plouzané, France
| | | | - Morgane Chalopin
- Ifremer, Laboratoire Détection Capteurs et Mesures, Centre de Bretagne, Plouzané, France
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Akcha F, Coquillé N, Sussarellu R, Rouxel J, Chouvelon T, Gonzalez P, Legeay A, Bruzac S, Sireau T, Gonzalez JL, Gourves PY, Godfrin Y, Buchet V, Stachowski-Haberkorn S. Trophic transfer of copper decreases the condition index in Crassostrea gigas spat in concomitance with a change in the microalgal fatty acid profile and enhanced oyster energy demand. Sci Total Environ 2022; 824:153841. [PMID: 35181356 DOI: 10.1016/j.scitotenv.2022.153841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 01/26/2022] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
Due to new usages and sources, copper (Cu) concentrations are increasing in the Arcachon Basin, an important shellfish production area in France. In the present paper, the trophic transfer of Cu was studied between a microalga, Tetraselmis suecica, and Crassostrea gigas (Pacific oyster) spat. An experimental approach was developed to assess Cu exposure, transfer and toxicity on both phytoplankton and spat. Exposure of microalgal cultures to Cu for 7-8 days (3.1 ± 0.1, 15.7 ± 0.2 and 50.4 ± 1.0 μg Cu·L-1 for the control, Cu15 and Cu50 conditions, respectively) led to concentrations in microalgae (28.3 ± 0.9 and 110.7 ± 11.9 mg Cu·kg dry weight-1 for Cu15 and Cu50, respectively) close to those measured in the field. Despite Cu accumulation, the physiology of the microalgae remained poorly affected. Exposed cultures could only be discriminated from controls by a higher relative content in intracellular reactive oxygen species, and a lower relative content in lipids together with a reduced metabolic activity. By contrast, the fatty acid profile of microalgae was modified, with a particularly relevant lower content of the essential polyunsaturated fatty acid 22:6n-3 (docosahexaenoic acid [DHA]). Following 21 days of spat feeding with Cu15 and Cu50 microalgal cultures, trophic transfer of Cu was observed with a high initial Cu concentration in spat tissues. No effect was observed on oxidative stress endpoints. Cu exposure was responsible for a decrease in the spat condition index, an outcome that could be related to an insufficient DHA supply and extra energy demand as suggested by the overexpression of genes involved in energy metabolism, ATP synthesis and glycogen catabolism.
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Affiliation(s)
- F Akcha
- Ifremer, Laboratory of Ecotoxicology, 44311 Nantes cedex 03, France.
| | - N Coquillé
- Ifremer, Laboratory of Ecotoxicology, 44311 Nantes cedex 03, France
| | - R Sussarellu
- Ifremer, Laboratory of Ecotoxicology, 44311 Nantes cedex 03, France
| | - J Rouxel
- Ifremer, Laboratory of Ecotoxicology, 44311 Nantes cedex 03, France
| | - T Chouvelon
- Ifremer, Laboratory of Biogeochemistry of Metallic Contaminants, 44311 Nantes cedex 03, France
| | - P Gonzalez
- University of Bordeaux, CNRS, EPOC, UMR 5805, Aquatic Ecotoxicology, Arcachon, France
| | - A Legeay
- University of Bordeaux, CNRS, EPOC, UMR 5805, Aquatic Ecotoxicology, Arcachon, France
| | - S Bruzac
- Ifremer, Laboratory of Biogeochemistry of Metallic Contaminants, 44311 Nantes cedex 03, France
| | - T Sireau
- Ifremer, Laboratory of Biogeochemistry of Metallic Contaminants, 44311 Nantes cedex 03, France
| | - J-L Gonzalez
- Ifremer, Laboratory of Biogeochemistry of Metallic Contaminants, 44311 Nantes cedex 03, France
| | - P-Y Gourves
- University of Bordeaux, CNRS, EPOC, UMR 5805, Aquatic Ecotoxicology, Arcachon, France
| | - Y Godfrin
- Ifremer, Laboratory of Ecotoxicology, 44311 Nantes cedex 03, France
| | - V Buchet
- Ifremer, Experimental Facilities for Marine Mollusks, 85230 Bouin, France
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Garcia C, Mesnil A, Tourbiez D, Moussa M, Dubreuil C, Gonçalves de Sa A, Chollet B, Godfrin Y, Dégremont L, Serpin D, Travers MA. Vibrio aestuarianus subsp. cardii subsp. nov., pathogenic to the edible cockles Cerastoderma edule in France, and establishment of Vibrio aestuarianus subsp. aestuarianus subsp. nov. and Vibrio aestuarianus subsp. francensis subsp. nov. Int J Syst Evol Microbiol 2021; 71:004654. [PMID: 33507857 PMCID: PMC8346768 DOI: 10.1099/ijsem.0.004654] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 12/24/2020] [Indexed: 11/28/2022] Open
Abstract
Cockle mortality events have been reported in northern France since 2012. In the present study, we describe and investigate the implication of a potential bacterial causative agent in cockle mortality. Bacteria isolated from five different cockle mortality events were characterized and studied. Using phenotypic analysis combined with DNA-DNA hybridization (DDH) and whole genome sequencing, the isolates were shown to belong to Vibrio aestuarianus, a species regularly detected in France during oyster mortality events. Comparison of the strains from cockles with strains from French oysters and the type strain showed that the strains from cockles were genetically different to those from oysters and also different to the V. aestuarianus type strain. Moreover, the cockle and oyster strains were classified into two different, but close, groups both separated from the type strain by: (1) analyses of the ldh gene sequences; (2) DDH assays between 12/122 3T3T (LMG 31436T=DSM 109723T), a representative cockle strain, 02/041T (CIP 109791T=LMG 24517T) representative oyster strain and V. aestuarianus type strain LMG 7909T; (3) average nucleotide identity values calculated on the genomes; and (4) phenotypic traits. Finally, results of MALDI-TOF analyses also revealed specific peaks discriminating the three representative strains. The toxicity of representative strains of these cockle isolates was demonstrated by experimental infection of hatchery-produced cockles. The data therefore allow us to propose two novel subspecies of Vibrio aestuarianus: Vibrio aestuarianus subsp. cardii subsp. nov. for the cockle strains and Vibrio aestuarianus subsp. francensis subsp. nov. for the Pacific oyster strains, in addition to an emended description of the species Vibrio aestuarianus.
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Affiliation(s)
- Céline Garcia
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Aurélie Mesnil
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
- IHPE, Univ. Montpellier, CNRS, Ifremer, Univ. Perpignan Via Domitia, 34090 Montpellier, France
| | - Delphine Tourbiez
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Mirna Moussa
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Christine Dubreuil
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Amélie Gonçalves de Sa
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Bruno Chollet
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Yoann Godfrin
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Lionel Dégremont
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Delphine Serpin
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
| | - Marie-Agnès Travers
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, 17390 La Tremblade, France
- IHPE, Univ. Montpellier, CNRS, Ifremer, Univ. Perpignan Via Domitia, 34090 Montpellier, France
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Ben Cheikh Y, Travers MA, Morga B, Godfrin Y, Rioult D, Le Foll F. First evidence for a Vibrio strain pathogenic to Mytilus edulis altering hemocyte immune capacities. Dev Comp Immunol 2016; 57:107-119. [PMID: 26719026 DOI: 10.1016/j.dci.2015.12.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 12/17/2015] [Accepted: 12/17/2015] [Indexed: 06/05/2023]
Abstract
Bacterial isolates were obtained from mortality events affecting Mytilus edulis and reported by professionals in 2010-2013 or from mussel microflora. Experimental infections allowed the selection of two isolates affiliated to Vibrio splendidus/Vibrio hemicentroti type strains: a virulent 10/068 1T1 (76.6% and 90% mortalities in 24 h and 96 h) and an innocuous 12/056 M24T1 (0% and 23.3% in 24 h and 96 h). These two strains were GFP-tagged and validated for their growth characteristics and virulence as genuine models for exposure. Then, host cellular immune responses to the microbial invaders were assessed. In the presence of the virulent strain, hemocyte motility was instantaneously enhanced but markedly slowed down after 2 h exposure. By contrast, hemocyte velocity increased in the presence of the innocuous 12/056 M24T1. At the same time interval, 10/068 1T1 invaded hemocytes and was more rapidly internalized than the innocuous strain. Extracellular products (ECPs) prepared from 10/068 1T1 cultures significantly inhibited phagocytic activity while 12/056 M24T1 ECPs had no effect. Furthermore, the pathogenic strain and its ECPs inhibited oxidative burst unlike 12/056 M24T1 strain/ECPs which enhanced ROS production. Taken together, our results suggest that the mussel pathogen 10/068 1T1 may escape immune response by altering hemocytes functions.
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Affiliation(s)
- Yosra Ben Cheikh
- Laboratory of Ecotoxicology- Aquatic Environments, UMR-I 02, SEBIO, University of Le Havre, F-76063, Le Havre Cedex, France
| | - Marie-Agnès Travers
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, Avenue de Mus de Loup, 17390, La Tremblade, France
| | - Benjamin Morga
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, Avenue de Mus de Loup, 17390, La Tremblade, France
| | - Yoann Godfrin
- Ifremer, SG2M-LGPMM, Laboratoire de Génétique et Pathologie des Mollusques Marins, Avenue de Mus de Loup, 17390, La Tremblade, France
| | - Damien Rioult
- Laboratory of Ecotoxicology- Aquatic Environments, UMR-I 02, SEBIO, University of Reims Champagne Ardenne, Campus Moulin de la House, F-51100, Reims, France
| | - Frank Le Foll
- Laboratory of Ecotoxicology- Aquatic Environments, UMR-I 02, SEBIO, University of Le Havre, F-76063, Le Havre Cedex, France.
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Gay F, Aguera K, Campion Y, Horand F, Berlier W, Godfrin Y. Potentiel de la déplétion en asparagine dans le traitement de tumeurs urologiques. Prog Urol 2012. [DOI: 10.1016/j.purol.2012.08.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Godfrin Y, Dufour E, Aguera K, Lorenzi P, Gay F, Horand F. 218 L-Asparaginase-loaded red blood cells: a promising therapy in solid tumours. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71025-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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8
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Dufour E, Aguera K, Lorenzi P, Gay F, Horand F, Godfrin Y. Efficacy of L-asparaginase loaded red blood cells combined with gemcitabine on pancreatic cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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9
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Le Berre L, Godfrin Y, Perretto S, Smit H, Buzelin F, Kerjaschki D, Usal C, Cuturi C, Soulillou JP, Dantal J. The Buffalo/Mna rat, an animal model of FSGS recurrence after renal transplantation. Transplant Proc 2001; 33:3338-40. [PMID: 11750427 DOI: 10.1016/s0041-1345(01)02437-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Le Berre L, Godfrin Y, Lafond-Puyet L, Perretto S, Le Carrer D, Bouhours JF, Soulillou JP, Dantal J. Effect of plasma fractions from patients with focal and segmental glomerulosclerosis on rat proteinuria. Kidney Int 2000; 58:2502-11. [PMID: 11115084 DOI: 10.1046/j.1523-1755.2000.00434.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Patients suffering from focal and segmental glomerulosclerosis (FSGS) and in whom this disease recurs after transplantation are likely to have an active form of the disease and to have a factor(s) (such as, albuminuric factor) present in their blood that alters glomerular permeability for albumin. METHODS We used a sequential 50 and 70% ammonium sulfate (AS) precipitation of plasma from patients with relapsing FSGS and non-FSGS nephrotic syndrome (NS), in addition to plasma from healthy individuals, to obtain both an immunoglobulin (Ig)-rich fraction (50% AS precipitate) and a non-Ig fraction (70% AS supernatant). These fractions were injected intra-arterially or intravenously/intraperitoneally into Sprague-Dawley rats, and proteinuria (g protein/mmol creatinine) was measured for 24 hours. Ig fractions eluted from immunoadsorption onto protein A were also tested. A biochemical characterization was then carried out on the 70% AS supernatants by ultrafiltration on 30 and 50 kD cut-off membranes and by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Differentially stained bands were sequenced. RESULTS The 70% AS supernatants from FSGS patients induced proteinuria when injected intra-arterially into normal rats. This effect was significantly different (P < 0.05) from that observed when similar fractions were prepared from the plasma of patients suffering from non-FSGS NS, but was not different from that observed with fractions from healthy individuals and even with an injection of saline solution. Injections of other plasma fractions did not induce a significant proteinuria in the FSGS group versus the non-FSGS NS group. SDS-PAGE of 70% AS supernatants revealed a protein of 23 kD that was more concentrated in AS supernatants from FSGS plasma than the other plasma samples and that was identified by microsequencing as apolipoprotein A1. After sequential ultrafiltration of 70% AS supernatants on 30 and 50 kD cut-off membranes, a second band of 43 kD was found at a much higher concentration in the FSGS samples than in non-FSGS NS and healthy individuals samples. This band is likely to correspond to a candidate albuminuric factor recently reported by another group [1], and was identified by microsequencing as alpha1 acid glycoprotein or orosomucoid. Consequently, purified orosomucoid from the plasma of FSGS, non-FSGS NS patients, or healthy individuals was injected intra-arterially into rats. No differences were found between the proteinuria induced in each group. CONCLUSIONS These data strongly suggest that in vivo injection of material into the rat is not a reliable model for testing plasma fraction activity and that the 43 kD orosomucoid is not likely to be the albuminuric factor.
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Affiliation(s)
- L Le Berre
- Institut National de la Santé Et de la Recherche Médicale (INSERM), Unité de Recherche U437 "Immunointervention dans les allo et xenotransplantations," Institut de Transplantation et Recherche en Transplantation (ITERT), Nantes, France
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11
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Barreau N, Godfrin Y, Bouhours JF, Bignon JD, Karam G, Leteissier E, Moreau A, Dantal J, Menoret S, Anegon I, Imbert BM, Brouard S, Soulillou JP, Blancho G. Interaction of anti-HLA antibodies with pig xenoantigens. Transplantation 2000; 69:148-56. [PMID: 10653394 DOI: 10.1097/00007890-200001150-00025] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Many patients with renal failure are condemned to long-term dialysis with little prospect of transplantation because they are highly sensitized with immunoglobulin G (IgG) directed against class I human leukocyte antigens (HLA) of virtually all donors. Xenotransplantation could represent an attractive solution providing their alloantibodies (alloAb) do not recognize porcine motifs. Hitherto there has been no in vivo demonstration of any cross-reactivity and the objective of this work was to investigate this problem using a technique of extracorporeal pig kidney perfusion as a model of clinical xenografting. METHODS Pig kidneys were perfused ex vivo with plasma from both a group of highly sensitized patients and healthy individuals. Sequential plasma samples were analyzed for the titer of anti-Galalpha1-3Gal antibody (Ab) (major natural xenoreactive Ab) by enzyme-linked immunosorbent assay and anti-HLA class I Ab against a cell panel. At the end of perfusion, kidneys were perfused with a citric acid buffer to elute bound Ab. RESULTS Galalpha1-3Gal Ab were shown to decrease rapidly in the plasma (in less than 10 min) and then reached a plateau. A fractional decrease in anti-HLA Ab was also found in some of the perfused plasma samples. Anti-Gal Ab were readily detected in all citric acid perfusates and anti-HLA Ab in 8 of 10. The HLA specificities of eluted Ab were mainly concordant with the originally designated specificities for each patient. CONCLUSION Anti-HLA class I Ab presumably cross-react with pig class I homologues. However, some plasma samples did not cross-react, suggesting that negatively cross-matched pig kidneys could be identified in the pig population for xenotransplantation in these patients. Further studies are required to precisely describe these cross-reactivities and to understand their functional significance in xenotransplantation.
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Affiliation(s)
- N Barreau
- Inserm Unit 437 Immunointervention in Allo and Xenotransplantation and ITERT (Institut de Transplantation Et de Recherche en Transplantation), Nantes, France
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Dantal J, Godfrin Y, Koll R, Perretto S, Naulet J, Bouhours JF, Soulillou JP. Antihuman immunoglobulin affinity immunoadsorption strongly decreases proteinuria in patients with relapsing nephrotic syndrome. J Am Soc Nephrol 1998; 9:1709-15. [PMID: 9727380 DOI: 10.1681/asn.v991709] [Citation(s) in RCA: 97] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Approximately 20 to 30% of patients with idiopathic nephrotic syndrome and focal glomerulosclerosis experience a relapse of their nephrotic syndrome after transplantation. Previously, it has been shown that ex vivo immunoadsorption on protein A strongly (although transiently) reduces proteinuria in relapsing patients. To investigate whether the factor(s) that give rise to albuminuria are bound directly to protein A in the immunoadsorption procedure or are part of a complex with Ig, four patients with relapse of focal glomerulosclerosis presenting as nephrotic syndrome after transplantation were treated, sequentially, using a (non-protein A) anti-Ig affinity column and a protein A column. This study reports that the effect on proteinuria of immunoadsorption using an anti-Ig immunoaffinity column is comparable in its magnitude and kinetics to that of immunoadsorption on protein A. The two procedures were also equally effective in depleting the relapsing patients' plasma of a factor capable of altering the albumin permselectivity of isolated glomeruli in vitro. This study demonstrates for the first time that immunoglobulins have a role in the nephrotic syndrome. In addition, the fact that the two different immunoadsorption procedures both resulted in the removal of the same putative albuminuric factor in these patients and that no autoreactivity of eluted immunoglobulins was observed on human tissues strongly suggests that the factor or factors that may be responsible for immediate nephrotic syndrome after transplantation are bound to an immunoglobulin. However, no firm evidence can be yet provided against a direct role of immunoglobulins.
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Affiliation(s)
- J Dantal
- Institut de Transplantation et de Recherche en Transplantation and Institut National de la Santé et de la Recherche Médicale, Unit 437, Nantes, France
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13
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Haas M, Godfrin Y, Oberbauer R, Yilmaz N, Borchhardt K, Regele H, Druml W, Derfler K, Mayer G. Plasma immunadsorption treatment in patients with primary focal and segmental glomerulosclerosis. Nephrol Dial Transplant 1998; 13:2013-6. [PMID: 9719156 DOI: 10.1093/ndt/13.8.2013] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND In primary focal and segmental glomerulosclerosis (FSGS) renal prognosis is poor if no remission of proteinuria can be obtained by treatment. In some patients a permeability factor, responsible for damaging the glomerular epithelial cell and detectable by an in vitro test (GVV-test), seems to be present in the serum. METHOD We determined the effects of an immunadsorption treatment (IAT) on proteinuria and glomerular permselectivity (using a neutral dextran and dextransulfate-sieving technique to assess glomerular size and charge selectivity) in five patients with FSGS in the native kidneys and three patients with recurrence of FSGS after kidney transplantation. Furthermore, we performed the GVV-test using sera obtained from the patients before and after therapy. RESULTS IAT reduced proteinuria by more than 50% in four patients, all of whom had an improvement in glomerular-size selectivity. Charge selectivity was better preserved after therapy in three out of these four subjects. The GVV-test prior to IAT was positive in two patients who also responded clinically to therapy. After IAT the GVV-test was negative in all patients, indicating an elimination of the proteinuric factor in the two previously positive patients. CONCLUSION We conclude that a positive GVV-test before treatment makes a favourable response of IAT on proteinuria likely in patients with FSGS. If a reduction of proteinuria can be obtained by IAT this is due to an improvement in glomerular size and/or charge selectivity.
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Affiliation(s)
- M Haas
- Department of Internal Medicine III, University of Vienna, Austria
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14
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Godfrin Y, Dantal J, Perretto S, Hristea D, Legendre C, Kreis H, Soulillou JP. Study of the in vitro effect on glomerular albumin permselectivity of serum before and after renal transplantation in focal segmental glomerulosclerosis. Transplantation 1997; 64:1711-5. [PMID: 9422407 DOI: 10.1097/00007890-199712270-00014] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND The selective proteinuria observed in patients with focal segmental glomerulosclerosis (FSGS) suggests an abnormal loss of fixed anionic charges on the glomerular capillary wall. METHODS In this article, we have studied the putative presence of such factor(s) by using a new in vitro assay to assess glomerular permselectivity by measuring glomerular volume variation (GVV) in isolated glomeruli after hypotonic stress. We randomly tested the serum GVV activity of 10 healthy donors and 143 patients before transplantation. Of the patients, 80 had FSGS, 26 membranous glomerulonephritis, 19 polycystic kidney disease, and 18 malformative uropathies. Moreover, we tested the pre- and posttransplantation serum of 14 patients with recurrence and 14 without recurrence. RESULTS Serum GVV was significantly higher in patients with FSGS than in those with the other end-stage renal diseases studied (P<0.01) or in healthy donors (P<0.01). However, a wide distribution of serum GVV activity in patients with and without FSGS was observed. Statistically, pregraft GVV values were not predictive of the recurrence of FSGS after transplantation. Moreover, we observed a significant decrease in serum GVV activity after transplantation in patients without recurrence (P<0.01) compared to those who underwent a recurrence. CONCLUSIONS These results reinforce the hypothesis of a circulating factor that alters glomerular albumin permselectivity in FSGS patients. However, the presence of this factor before transplantation did not appear to predict relapse of the disease after transplantation, as recently supported, although its activity seems to be down-regulated after transplantation in patients who do not experience recurrence of the disease.
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Affiliation(s)
- Y Godfrin
- Institut National de la Santé Et de la Recherche Médicale (INSERM) Unité 437, Immunointervention dans les Allo et Xénotransplantations, Nantes, France
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David A, Cassard A, Tesson L, Blancho G, Sigalla J, Charreau B, Godfrin Y, Smit H, Le Mauff B, Soulillou JP, Anegon I. In vitro and in vivo gene transfer in the rat: characterization of recombinant adenoviral vectors for rat interleukin-4 or interleukin-10 cDNA. Transplant Proc 1997; 29:1750-1. [PMID: 9142259 DOI: 10.1016/s0041-1345(97)00042-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- A David
- INSERM U437, ITERT, Nantes, France
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Affiliation(s)
- Y Godfrin
- Institut National de la Santé Et de la Recherche Medicale (I.N.S.E.R.M.) Unité 437, Nantes, France
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Eschwège P, Godfrin Y, Conti M, Quillard J, Douguet D, Benoit G. Subzero nonfrozen storage of rat kidneys and livers: computer-assisted organ perfusion-storage equipment. Transplant Proc 1996; 28:2900-2. [PMID: 8908117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- P Eschwège
- Laboratoire de Chirurgie Expérimentale, Faculté de Médecine Paris-Sud, France
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Eschwège P, Godfrin Y, Conti M, Quillard J, Douguet D, Benoit G. Ninety-six hours subzero nonfrozen storage of rat kidneys: preliminary report. Transplant Proc 1996; 28:2903-4. [PMID: 8908118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- P Eschwège
- Laboratoire de Chirurgie Expérimentale, Faculté de Médecine Paris-Sud, France
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Eschewege P, Godfrin Y, Conti M, Quillard J, Douguet D, Benoit G. [Development of a device allowing for the perfusion and preservation of rat kidneys at -4 degrees C]. Prog Urol 1996; 6:357-61. [PMID: 8763689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVES In order to prolong the cold ischaemia time and to improve the quality of donor kidneys, we have designed and developed a renal perfusion machine allowing the control of perfusion parameters (temperature, pressure, flow rate, resistance) during the various phases of a kidney perfusion and storage protocol at -4 degrees C. ANIMALS, MATERIALS AND METHODS Twenty four rat kidneys were removed and the effects of perfusion and storage at -4 degrees C were studied using a perfusion/storage machine allowing the controlled addition of 2,3 butanediol in University of Wisconsin (UW solution). The kidneys were stored for 96 hours at -4 degrees C and were studied in terms of perfusion parameters (pressure, resistance) and according to their histological appearance. RESULTS The machine allows controlled perfusion of a cryoprotective agent and preservation of kidneys at -4 degrees C for 96 hours. CONCLUSION In animals, it is possible to store kidneys at a temperature of -4 degrees C for 96 hours by using a vecor solution (UW solution) and a cryoprotective agent (2,3 butanediol). The perfusion and storage of organs under these conditions must be performed by a computer-assisted machine, allowing monitoring and control of the various steps of perfusion/storage.
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Affiliation(s)
- P Eschewege
- Laboratoire de Chirurgie Expérimentale et Service d'Urologie, Faculté de Médecine Paris-Sud, Hôpital de Bicêtre, Le Kremlin Bicêtre
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Dantal J, Godfrin Y, Soulillou JP. New insight into the pathogenesis of the 'idiopathic nephrotic syndrome'. Nephrol Dial Transplant 1995; 10:1979-82. [PMID: 8643152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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