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Proteomic profile of mesothelial exosomes isolated from peritoneal dialysis effluent of children with focal segmental glomerulosclerosis. Sci Rep 2021; 11:20807. [PMID: 34675284 PMCID: PMC8531449 DOI: 10.1038/s41598-021-00324-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 10/08/2021] [Indexed: 01/06/2023] Open
Abstract
Peritoneal dialysis (PD) is the worldwide recognized preferred dialysis treatment for children affected by end-stage kidney disease (ESKD). However, due to the unphysiological composition of PD fluids, the peritoneal membrane (PM) of these patients may undergo structural and functional alterations, which may cause fibrosis. Several factors may accelerate this process and primary kidney disease may have a causative role. In particular, patients affected by steroid resistant primary focal segmental glomerulosclerosis, a rare glomerular disease leading to nephrotic syndrome and ESKD, seem more prone to develop peritoneal fibrosis. The mechanism causing this predisposition is still unrecognized. To better define this condition, we carried out, for the first time, a new comprehensive comparative proteomic mass spectrometry analysis of mesothelial exosomes from peritoneal dialysis effluent (PDE) of 6 pediatric patients with focal segmental glomerular sclerosis (FSGS) versus 6 patients affected by other primary renal diseases (No FSGS). Our omic study demonstrated that, despite the high overlap in the protein milieu between the two study groups, machine learning allowed to identify a core list of 40 proteins, with ANXA13 as most promising potential biomarker, to distinguish, in our patient population, peritoneal dialysis effluent exosomes of FSGS from No FSGS patients (with 100% accuracy). Additionally, the Weight Gene Co-expression Network Analysis algorithm identified 17 proteins, with PTP4A1 as the most statistically significant biomarker associated to PD vintage and decreased PM function. Altogether, our data suggest that mesothelial cells of FSGS patients are more prone to activate a pro-fibrotic machinery. The role of the proposed biomarkers in the PM pathology deserves further investigation. Our results need further investigations in a larger population to corroborate these findings and investigate a possible increased risk of PM loss of function or development of encapsulating peritoneal sclerosis in FSGS patients, thus to eventually carry out changes in PD treatment and management or implement new solutions.
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Guedes AM. Peritoneal Protein Loss, Leakage or Clearance in Peritoneal Dialysis, Where do we Stand? Perit Dial Int 2019; 39:201-209. [DOI: 10.3747/pdi.2018.00138] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 12/28/2018] [Indexed: 11/15/2022] Open
Abstract
Peritoneal protein loss (PPL) through peritoneal effluent has been a well-recognized detrimental result of peritoneal dialysis (PD) treatment since its inception. Investigation has focused mainly on PPL quantitative and qualitative determinations and evaluation of its prognostic value. A comprehensive review of the pathophysiology of PPL (3-pore model revisited), methods of quantification, dialysate protein composition, and impact on clinical outcomes is presented herein. The author summarizes a brief analysis of associated cardiovascular disease and nutritional consequences, exploring the controversial cause-effect on mortality and technique failure. Therapeutic modalities aiming to reduce PPL (angiotensin-converting enzyme inhibitors [ACEI]s and vitamin D therapies) were explored, although it is unclear whether PPL represents a valid therapeutic target or, on the other hand, is solely a manifestation of endothelial dysfunction.
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Affiliation(s)
- Anabela Malho Guedes
- Serviço de Nefrologia, Centro Hospitalar Universitário do Algarve, Faro, Portugal; Algarve Biomedical Center, Faro, Portugal
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Zavvos V, Buxton AT, Evans C, Lambie M, Davies SJ, Topley N, Wilkie M, Summers A, Brenchley P, Goumenos DS, Johnson TS. A prospective, proteomics study identified potential biomarkers of encapsulating peritoneal sclerosis in peritoneal effluent. Kidney Int 2017; 92:988-1002. [PMID: 28673451 DOI: 10.1016/j.kint.2017.03.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 03/14/2017] [Accepted: 03/16/2017] [Indexed: 11/28/2022]
Abstract
Encapsulating peritoneal sclerosis (EPS) is a potentially devastating complication of peritoneal dialysis (PD). Diagnosis is often delayed due to the lack of effective and accurate diagnostic tools. We therefore examined peritoneal effluent for potential biomarkers that could predict or confirm the diagnosis of EPS and would be valuable in stratifying at-risk patients and driving appropriate interventions. Using prospectively collected samples from the Global Fluid Study and a cohort of Greek PD patients, we utilized 2D SDSPAGE/ MS and iTRAQ to identify changes in the peritoneal effluent proteome from patients diagnosed with EPS and controls matched for treatment exposure. We employed a combinatorial peptide ligand library to compress the dynamic range of protein concentrations to aid identification of low-abundance proteins. In patients with stable membrane function, fibrinogen γ-chain and heparan sulphate proteoglycan core protein progressively increased over time on PD. In patients who developed EPS, collagen-α1(I), γ-actin and Complement factors B and I were elevated up to five years prior to diagnosis. Orosomucoid-1 and a2-HS-glycoprotein chain-B were elevated about one year before diagnosis, while apolipoprotein A-IV and α1-antitrypsin were decreased compared to controls. Dynamic range compression resulted in an increased number of proteins detected with improved resolution of protein spots, compared to the full fluid proteome. Intelectin-1, dermatopontin, gelsolin, and retinol binding protein-4 were elevated in proteome-mined samples from patients with EPS compared to patients that had just commenced peritoneal dialysis. Thus, prospective analysis of peritoneal effluent uncovered proteins indicative of inflammatory and pro-fibrotic injury worthy of further evaluation as diagnostic/prognostic markers.
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Affiliation(s)
- Vasileios Zavvos
- Department of Nephrology, University Hospital of Patras, Patras, Greece; Academic Nephrology Unit and Sheffield Kidney Institute, University of Sheffield, Sheffield, UK
| | - Anthony T Buxton
- Academic Nephrology Unit and Sheffield Kidney Institute, University of Sheffield, Sheffield, UK
| | - Caroline Evans
- Proteomics Unit, Chemical Engineering, University of Sheffield, Sheffield, UK
| | - Mark Lambie
- Institute of Applied Clinical Sciences, Keele University, Keele, UK
| | - Simon J Davies
- Institute of Applied Clinical Sciences, Keele University, Keele, UK
| | - Nicholas Topley
- Wales Kidney Research Unit, Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, UK
| | - Martin Wilkie
- Academic Nephrology Unit and Sheffield Kidney Institute, University of Sheffield, Sheffield, UK
| | - Angela Summers
- Kidney Research Laboratories, Manchester Royal Infirmary, Manchester, UK
| | - Paul Brenchley
- Kidney Research Laboratories, Manchester Royal Infirmary, Manchester, UK
| | | | - Timothy S Johnson
- Academic Nephrology Unit and Sheffield Kidney Institute, University of Sheffield, Sheffield, UK.
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Pearson LJ, Klaharn IY, Thongsawang B, Manuprasert W, Saejew T, Somparn P, Chuengsaman P, Kanjanabuch T, Pisitkun T. Multiple extracellular vesicle types in peritoneal dialysis effluent are prominent and contain known biomarkers. PLoS One 2017; 12:e0178601. [PMID: 28594924 PMCID: PMC5464591 DOI: 10.1371/journal.pone.0178601] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 05/16/2017] [Indexed: 12/15/2022] Open
Abstract
Peritoneal dialysis inevitability results in activation of inflammatory processes and its efficiency is highly variable between patients. An improved method to isolate biomarkers and study pathophysiological mechanisms in peritoneal dialysis effluent (PDE) is expected to be of much benefit for the development of this treatment approach and help with patient management. Extracellular vesicles (EVs) are released as part of normal cellular processes. Their proteome is expected to reflect both type and health of their cell of origin. Although there is a significant interest in using EVs for "liquid biopsies", little is reported of their presence or composition in plentiful dialysis waste fluids, including peritoneal dialysis effluent (PDE). Here we determined the presence of EVs in PDE and subsequently characterized their proteome. EVs were first isolated from PDE using differential centrifugation, then a further enrichment using size exclusion chromatography (SEC) was performed. The presence of EVs was demonstrated using transmission electron microscopy, and their particle counts were investigated using nanoparticle tracking analysis and dynamic light scattering. Using tandem mass spectrometry, marker proteins from three types of EVs i.e. apoptotic bodies, ectosomes, and exosomes were identified. The proteomic results demonstrated that the isolation of EVs by differential centrifugation helped enrich for over 2,000 proteins normally masked by abundant proteins in PDE such as albumin and SEC markedly further improved the isolation of low abundant proteins. Gene ontology analysis of all identified proteins showed the marked enrichment of exosome and membrane-associated proteins. Over 3,700 proteins were identified in total, including many proteins with known roles in peritoneal pathophysiology. This study demonstrated the prominence of EVs in PDE and their potential value as a source of biomarkers for peritoneal dialysis patients.
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Affiliation(s)
- Lachlan James Pearson
- Systems Biology Center, Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - I-yanut Klaharn
- Systems Biology Center, Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Bussakorn Thongsawang
- Kidney and Metabolic Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Wasin Manuprasert
- Kidney and Metabolic Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Thunvarat Saejew
- Peritoneal Dialysis Excellence Centre, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Poorichaya Somparn
- Systems Biology Center, Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | | | - Talerngsak Kanjanabuch
- Kidney and Metabolic Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Peritoneal Dialysis Excellence Centre, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
- * E-mail: (TP); (TK)
| | - Trairak Pisitkun
- Systems Biology Center, Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- * E-mail: (TP); (TK)
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McGuire AL, Mulroney KT, Carson CF, Ram R, Morahan G, Chakera A. Analysis of early mesothelial cell responses to Staphylococcus epidermidis isolated from patients with peritoneal dialysis-associated peritonitis. PLoS One 2017; 12:e0178151. [PMID: 28542390 PMCID: PMC5443531 DOI: 10.1371/journal.pone.0178151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 05/08/2017] [Indexed: 02/06/2023] Open
Abstract
The major complication of peritoneal dialysis (PD) is the development of peritonitis, an infection within the abdominal cavity, primarily caused by bacteria. PD peritonitis is associated with significant morbidity, mortality and health care costs. Staphylococcus epidermidis is the most frequently isolated cause of PD-associated peritonitis. Mesothelial cells are integral to the host response to peritonitis, and subsequent clinical outcomes, yet the effects of infection on mesothelial cells are not well characterised. We systematically investigated the early mesothelial cell response to clinical and reference isolates of S. epidermidis using primary mesothelial cells and the mesothelial cell line Met-5A. Using an unbiased whole genome microarray, followed by a targeted panel of genes known to be involved in the human antibacterial response, we identified 38 differentially regulated genes (adj. p-value < 0.05) representing 35 canonical pathways after 1 hour exposure to S. epidermidis. The top 3 canonical pathways were TNFR2 signaling, IL-17A signaling, and TNFR1 signaling (adj. p-values of 0.0012, 0.0012 and 0.0019, respectively). Subsequent qPCR validation confirmed significant differences in gene expression in a number of genes not previously described in mesothelial cell responses to infection, with heterogeneity observed between clinical isolates of S. epidermidis, and between Met-5A and primary mesothelial cells. Heterogeneity between different S. epidermidis isolates suggests that specific virulence factors may play critical roles in influencing outcomes from peritonitis. This study provides new insights into early mesothelial cell responses to infection with S. epidermidis, and confirms the importance of validating findings in primary mesothelial cells.
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Affiliation(s)
- Amanda L. McGuire
- Translational Renal Research Group, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia
- School of Medicine and Pharmacology, University of Western Australia, Crawley, Western Australia, Australia
- * E-mail:
| | - Kieran T. Mulroney
- Translational Renal Research Group, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia
- School of Medicine and Pharmacology, University of Western Australia, Crawley, Western Australia, Australia
| | - Christine F. Carson
- Translational Renal Research Group, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia
- School of Medicine and Pharmacology, University of Western Australia, Crawley, Western Australia, Australia
| | - Ramesh Ram
- Centre for Diabetes Research, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia
| | - Grant Morahan
- Centre for Diabetes Research, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia
| | - Aron Chakera
- Translational Renal Research Group, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia
- School of Medicine and Pharmacology, University of Western Australia, Crawley, Western Australia, Australia
- Department of Renal Medicine, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
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Lin SY, Hsu WH, Lin CC, Chen CJ. Mass spectrometry-based proteomics in Chest Medicine, Gerontology, and Nephrology: subgroups omics for personalized medicine. Biomedicine (Taipei) 2014; 4:25. [PMID: 25520938 PMCID: PMC4264973 DOI: 10.7603/s40681-014-0025-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 07/30/2014] [Indexed: 12/12/2022] Open
Abstract
Mass spectrometry (MS) is currently the most promising tool for studying proteomics to investigate largescale proteins in a specific proteome. Emerging MS-based proteomics is widely applied to decipher complex proteome for discovering potential biomarkers. Given its growing usage in clinical medicine for biomarker discovery to predict, diagnose and confer prognosis, MS-based proteomics can benefit study of personalized medicine. In this review we introduce some fundamental MS theory and MS-based quantitative proteomic approaches as well as several representative clinical MS-based proteomics issues in Chest Medicine, Gerontology, and Nephrology.
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Affiliation(s)
- Shih-Yi Lin
- Institute of Clinical Medical Science, China Medical University College of Medicine, 404 Taichung, Taiwan
- Department of Internal Medicine, China Medical University Hospital, 404 Taichung, Taiwan
- Division of Nephrology and Kidney Institute, China Medical University Hospital, 404 Taichung, Taiwan
| | - Wu-Huei Hsu
- Institute of Clinical Medical Science, China Medical University College of Medicine, 404 Taichung, Taiwan
- Department of Internal Medicine, China Medical University Hospital, 404 Taichung, Taiwan
- Division of Pulmonary and Critical Care Medicine, China Medical University Hospital and China Medical University, 404 Taichung, Taiwan
| | - Cheng-Chieh Lin
- Institute of Clinical Medical Science, China Medical University College of Medicine, 404 Taichung, Taiwan
- Department of Family Medicine, China Medical University Hospital, 404 Taichung, Taiwan
- School of Medicine, College of Medicine China Medical University, No. 91, Hsueh Shih Road, 404 Taichung, Taiwan
| | - Chao-Jung Chen
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, No. 91, Hsueh-Shih Road, 402 Taichung, Taiwan
- Proteomics Core Laboratory, Department of Medical Research, China Medical University Hospital, 404 Taichung, Taiwan
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7
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Oliveira E, Araújo JE, Gómez-Meire S, Lodeiro C, Perez-Melon C, Iglesias-Lamas E, Otero-Glez A, Capelo JL, Santos HM. Proteomics analysis of the peritoneal dialysate effluent reveals the presence of calcium-regulation proteins and acute inflammatory response. Clin Proteomics 2014; 11:17. [PMID: 24742231 PMCID: PMC4022211 DOI: 10.1186/1559-0275-11-17] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 03/03/2014] [Indexed: 12/12/2022] Open
Abstract
Background Peritoneal dialysis (PD) is a form of renal replacement used for advanced chronic kidney disease. PD effluent holds a great potential for biomarker discovery for diagnosis and prognosis. In this study a novel approach to unravelling the proteome of PD effluent based-on dithiothreitol depletion followed by 2D-SDS-PAGE and protein identification using tandem mass spectrometry is proposed. Results A total of 49 spots were analysed revealing 25 proteins differentially expressed, among them many proteins involved in calcium regulation. Conclusions Remarkably, a group of proteins dealing with calcium metabolism and calcium regulation has been found to be lost through peritoneal dialysate effluent, giving thus a potential explanation to the calcification of soft tissues in patients subjected to peritoneal dialysis and kidney injury. Comparison of literature dealing with PD is difficult due to differences in sample treatment and analytical methodologies.
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Affiliation(s)
- Elisabete Oliveira
- BIOSCOPE Research Group. REQUIMTE, Departamento de Química. Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal ; PROTEOMASS Scientific Society, Madan Parque, Rua dos Inventores, Caparica, 2825-182, Portugal
| | - José E Araújo
- BIOSCOPE Research Group. REQUIMTE, Departamento de Química. Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal ; PROTEOMASS Scientific Society, Madan Parque, Rua dos Inventores, Caparica, 2825-182, Portugal
| | - Silvana Gómez-Meire
- SING Group. Informatics Department. Higher Technical School of Computer Engineering, University of Vigo, Ourense, Spain
| | - Carlos Lodeiro
- BIOSCOPE Research Group. REQUIMTE, Departamento de Química. Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal ; PROTEOMASS Scientific Society, Madan Parque, Rua dos Inventores, Caparica, 2825-182, Portugal
| | - Cristina Perez-Melon
- Servicio de Nefrología, Complejo Hospitalario Universitario de Ourense, Ourense, 32004, España
| | - Elena Iglesias-Lamas
- Servicio de Nefrología, Complejo Hospitalario Universitario de Ourense, Ourense, 32004, España
| | - Alfonso Otero-Glez
- Servicio de Nefrología, Complejo Hospitalario Universitario de Ourense, Ourense, 32004, España
| | - José L Capelo
- BIOSCOPE Research Group. REQUIMTE, Departamento de Química. Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal ; PROTEOMASS Scientific Society, Madan Parque, Rua dos Inventores, Caparica, 2825-182, Portugal
| | - Hugo M Santos
- BIOSCOPE Research Group. REQUIMTE, Departamento de Química. Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal ; PROTEOMASS Scientific Society, Madan Parque, Rua dos Inventores, Caparica, 2825-182, Portugal
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8
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Lichtenauer AM, Herzog R, Tarantino S, Aufricht C, Kratochwill K. Equalizer technology followed by DIGE-based proteomics for detection of cellular proteins in artificial peritoneal dialysis effluents. Electrophoresis 2014; 35:1387-94. [DOI: 10.1002/elps.201300499] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 01/17/2014] [Accepted: 02/21/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Anton Michael Lichtenauer
- Department of Pediatrics and Adolescent Medicine; Medical University of Vienna; Austria
- Zytoprotec GmbH; Vienna Austria
| | - Rebecca Herzog
- Department of Pediatrics and Adolescent Medicine; Medical University of Vienna; Austria
- Zytoprotec GmbH; Vienna Austria
| | - Silvia Tarantino
- Department of Pediatrics and Adolescent Medicine; Medical University of Vienna; Austria
| | - Christoph Aufricht
- Department of Pediatrics and Adolescent Medicine; Medical University of Vienna; Austria
| | - Klaus Kratochwill
- Department of Pediatrics and Adolescent Medicine; Medical University of Vienna; Austria
- Zytoprotec GmbH; Vienna Austria
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Foster TL, Ferrantelli E, van Wier-van der Schaaf T, Beelen RHJ. European Training and Research in Peritoneal Dialysis: scientific objectives, training, implementation and impact of the programme. J Ren Care 2013; 40:34-9. [PMID: 24325343 DOI: 10.1002/jorc.12041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Peritoneal dialysis (PD) offers many advantages over hospital-based haemodialysis, including better quality of life. Despite this, there is a general under-utilisation of PD in Europe, which, to some extent, can be attributed to a lack of knowledge and education amongst renal clinicians and nurses. OBJECTIVES The specific aim of the European Training and Research in Peritoneal Dialysis (EuTRiPD) programme is to address this lack of knowledge, to develop a minimum of five biomarkers that allow the prediction of outcome in PD and three therapeutic treatments to improve outcome in PD. APPROACH EuTRiPD is a EU-wide consortium with clinical, academic and commercial partners set up to address this knowledge gap. By training through research and close collaboration between academic and commercial entities we hope to improve the outcome and uptake of PD. It is the goal of EuTRiPD to improve the currently hampered diagnostic therapeutic developments in renal replacement therapy (RRT) and structure existing high-quality PD-related research across Europe. CONCLUSION It is hoped that EuTRiPD can and will have a significant impact on socio-economic and scientific aspects of PD. It is the aim for EuTRiPD to boost the uptake of PD throughout Europe by making PD the obvious choice for patients.
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Affiliation(s)
- Tom L Foster
- Department of Molecular Cell Biology and Immunology, VU University Medical Center (VUMC), Amsterdam, The Netherlands
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