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Silva MVR, Carvalho AB, Manfredi SR, Cassiolato JL, Canziani MEF. Effect of medium cut-off and high-flux hemodialysis membranes on blood pressure assessed by ambulatory blood pressure monitoring. Artif Organs 2024; 48:433-443. [PMID: 38409907 DOI: 10.1111/aor.14724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/20/2023] [Accepted: 01/23/2024] [Indexed: 02/28/2024]
Abstract
BACKGROUND Hypertension is one of the most critical risk factors for cardiovascular disease, which is the leading cause of death in hemodialysis (HD) patients. Medium cut-off (MCO) membrane increases the clearance of medium molecules, which could improve blood pressure (BP) control. This study aimed to compare the effect of MCO and high-flux hemodialysis membranes on BP assessed by ambulatory blood pressure monitoring (ABPM). METHODS This is a pre-established secondary analysis of a 28-week, randomized, open-label crossover clinical trial. Patients were randomized to HD with MCO or high-flux membranes over 12 weeks, followed by a 4-week washout period, and then switched to the alternate membrane treatment for 12 weeks. ABPM was started before the HD session and ended at least 24 h later in weeks 1, 12, 16, and 28. RESULTS 32 patients, 59% male, with a mean age of 52.7 years, and 40% with unknown CKD etiology, were enrolled. The dialysis vintage was 8 years, and more than 70% of the patients had hypertension. Regarding 24-h BP control, morning diastolic BP showed an increase in the high-flux compared to stability in the MCO group (interaction effect, p = 0.039). The adjusted ANOVA models showed no significant difference in the morning BP levels between the groups. Considering only the period of the HD session, patients in the MCO, compared to those in the high-flux membrane group, showed greater BP stability during dialysis, characterized by smaller variation in the pre-post HD systolic and minimum systolic BP (treatment effect, p = 0.039, and p = 0.023, respectively). CONCLUSIONS MCO membrane seems to have a beneficial effect on morning BP and favors better BP stability during HD sessions.
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Fiorentino M, La Fergola F, De Rosa S. Medium cut-off dialyzer for middle molecular uremic toxins in AKI and chronic dialysis. J Nephrol 2024; 37:23-37. [PMID: 37843731 PMCID: PMC10920419 DOI: 10.1007/s40620-023-01771-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/18/2023] [Indexed: 10/17/2023]
Abstract
Uremic toxins accumulate in patients affected by renal failure and can deposit in different organs, including the kidneys and heart. Given their physicochemical characteristics, uremic toxins can contribute to organ dysfunction due to several pathobiological actions at cellular and molecular levels. Several uremic compounds have been described in serum and plasma from patients with acute kidney injury (AKI) and kidney failure; they are usually classified based on their molecular size and protein-binding properties. In this scenario, new dialytic approaches have been proposed in the last few years with the aim of improving uremic toxin removal. Recent studies which focused on the use of medium cut-off membranes in patients on chronic hemodialysis have shown a discrete ability to remove β2-microglobulin and other middle molecules, such as kappa and lambda free light chains, complement factor D and α1-microglobulin. However, current evidence is mainly based on the impact on short-term outcomes and, consequently, longer observational studies are necessary to confirm the efficacy and safety of the medium cut-off dialyzer. Here we present the state-of-the-art on the clinical application of medium cut-off membranes in AKI and chronic dialysis patients.
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Affiliation(s)
- Marco Fiorentino
- Nephrology, Dialysis and Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari "Aldo Moro", Bari, Italy
| | - Francesco La Fergola
- Nephrology, Dialysis and Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari "Aldo Moro", Bari, Italy
| | - Silvia De Rosa
- Centre for Medical Sciences - CISMed, University of Trento, Via S. Maria Maddalena 1, 38122, Trento, Italy.
- Anesthesia and Intensive Care, Santa Chiara Regional Hospital, APSS Trento, Trento, Italy.
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de Sequera P, Pérez-García R, Vega A, Martínez-Vaquera S, Acosta JG, Pérez Del Valle K, Fernández-Lucas M, García-Rubiales MA, García-Herrera AL, Coll E, Mérida E, Martínez-Miguel P, Castaño I, Gil-Casares B, Garro J, Maduell F. Trial design of the MOTheR HDx study: a multicenter, open-label, prospective, randomized study to explore the morbidity and mortality in patients dialyzed with the Theranova HDx in comparison with online hemodiafiltration. Clin Kidney J 2023; 16:2254-2261. [PMID: 37915938 PMCID: PMC10616438 DOI: 10.1093/ckj/sfad128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Indexed: 11/03/2023] Open
Abstract
Background Dialysis patients have been maintaining a high rate of cardiovascular morbidity and mortality. For this reason, it is to introduce necessary new technical advances in clinical practice. There is a relation between toxins retention and inflammation, mortality and morbidity. Medium cut-off (MCO) membranes are a new generation of membranes that allow the removal of a greater number of medium-sized molecules compared with high-flux hemodialysis (HF-HD), but retaining albumin. MCO membranes have an increased permeability and the presence of internal filtration. Because of these special properties, MCO generated a new concept of therapy called expanded HD (HDx). Until now, online hemodiafiltration (OL-HDF) has demonstrated its superiority, in terms of survival, compared with HF-HD. However, the comparison between OL-HDF and HDx remains an unsolved question. Methods The MOTheR HDx study trial (NCT03714386) is an open-label, multicenter, prospective, 1:1 randomized, parallel-group trial designed to evaluate the efficacy and safety of HDx compared with OL-HDF in patients treated for dialysis in Spain for up to 36 months. The main endpoint is to determinate whether HDx is non inferior to OL-HDF at reducing the combined outcome of all-cause death and stroke (ischemic or hemorrhagic), acute coronary syndrome (angina and myocardial infarction), peripheral arterial disease (amputation or revascularization) and ischemic colitis (mesenteric thrombosis). Results The trial has already started.
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Affiliation(s)
| | | | - Almudena Vega
- Nephrology Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | | | | | | | | | | | | | - Elisabeth Coll
- Nephrology Department, Fundación Puigvert, Barcelona, Spain
| | - Evangelina Mérida
- Nephrology Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | | | - Itziar Castaño
- Nephrology Department, Complejo Hospitalario de Navarra, Navarra, Spain
| | | | - Julia Garro
- Nephrology Department, Hospital Universitario Joan XXIII, Tarragona, Spain
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Kim CS, Joo SY, Choi HS, Bae EH, Ma SK, Kim SW. Comparison of the medium cutoff dialyzer and postdilution hemodiafiltration on the removal of small and middle molecule uremic toxins. Kidney Res Clin Pract 2023; 42:712-722. [PMID: 37448285 DOI: 10.23876/j.krcp.21.287] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 07/04/2022] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND The medium cutoff (MCO) dialyzer increases the removal of several middle molecules more effectively than high-flux hemodialysis (HD). However, comparative data addressing the efficacy and safety of MCO dialyzers vs. postdilution hemodiafiltration (HDF) in Korean patients are lacking. METHODS Nine patients with chronic HD were included in this pre-post study. Patients underwent HD with an MCO dialyzer for 4 weeks, followed by a 2-week washout period using a high-flux dialyzer to minimize carryover effects, and then turned over to postdilution HDF for 4 weeks. Reduction ratios and differences in the uremic toxins before and after dialysis were calculated from the MCO dialysis, postdilution HDF, and high-flux HD. In the in vitro study, EA.hy926 cells were incubated with dialyzed serum. RESULTS Compared to postdilution HDF, the MCO dialyzer achieved significantly higher reduction ratios for larger middle molecules (myoglobin, kappa free light chain [κFLC], and lambda FLC [λFLC]). Similarly, the differences in myoglobin, κFLC, and λFLC concentrations before and after the last dialysis session were significantly greater in MCO dialysis than in postdilution HDF. The expression of Bax and nuclear factor κB was decreased in the serum after dialysis with the MCO dialyzer than with HDF. CONCLUSION Compared with high-volume postdilution HDF, MCO dialysis did not provide greater removal of molecules below 12,000 Da, whereas it was superior in the removal of larger uremic middle molecule toxins in patients with kidney failure. Moreover, these results may be expected to have an anti-apoptotic effect on the human endothelium.
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Affiliation(s)
- Chang Seong Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Soo Yeon Joo
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hong Sang Choi
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Eun Hui Bae
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Seong Kwon Ma
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Soo Wan Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
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Jonny J, Teressa M. Expanded hemodialysis: a new concept of renal replacement therapy. J Investig Med 2023; 71:38-41. [PMID: 36316065 DOI: 10.1136/jim-2022-002431] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2022] [Indexed: 01/06/2023]
Abstract
Expanded hemodialysis (HDx) is an innovation that can increase the effectiveness of hemodialysis. The dialysis process is expected to promote more uremic toxins removal without causing significant hypoalbuminemia using the medium cut-off (MCO) membrane or also known as the high retention onset membrane. Compared with conventional membranes such as those of low-flux hemodialysis, high-flux hemodialysis, and hemodiafiltration, the MCO membrane in HDx is considered to be the closest to the physiology of the glomerular membrane. Several studies have shown the use of the MCO membrane in HDx provides clinical benefits and better outcome although further studies are needed to assess the long-term effect and greater impact for dialysis patients.
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Affiliation(s)
- Jonny Jonny
- Division of Nephrology, Department of Internal Medicine, Gatot Soebroto Army Hospital, Jakarta, Indonesia
| | - Maria Teressa
- Division of Nephrology, Department of Internal Medicine, Gatot Soebroto Army Hospital, Jakarta, Indonesia
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Koniman R, Teo SH, Kaushik M, Nagarajan C, Tan MSY, Tan HK, Ramirez MEG, Lim CC. The use of medium cutoff dialyzers in patients with multiple myeloma and acute kidney injury requiring hemodialysis: A systematic review. Semin Dial 2023; 36:12-17. [PMID: 35840146 DOI: 10.1111/sdi.13115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 06/14/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Patients with multiple myeloma and high serum levels of circulating free light chains (FLC) have increased risk of acute kidney injury (AKI) secondary to cast nephropathy and is associated with poor survival. Despite removal of FLC by medium cutoff (MCO) dialyzer, the role of MCO hemodialysis (HD) in the treatment of cast nephropathy and its clinical benefits remain unknown. METHODS A systematic review was conducted to establish the effectiveness of MCO dialyzer and clinical outcomes, compared to other forms of dialyzers in the removal of FLC, in myeloma patients with AKI. The primary outcome was effectiveness of MCO-HD in reducing serum FLC. The secondary outcomes were HD independence, estimated glomerular filtrate rate, mortality rates, length of hospitalization, rebound of serum FLC before the next dialysis, removal of other molecules during dialysis, and adverse events. RESULTS We identified three case series, with a total of 17 patients. There were no randomized controlled trials (RCTs) or cohort studies. These case series showed that MCO dialyzer was effective in the removal of FLC and led to a reduction in FLC concentration post-dialysis. The majority of the case series did not have comparator arm and renal and/or other clinical outcomes. CONCLUSION MCO dialyzer appeared to be effective in the removal of FLC based on the existing limited data. However, more data, particularly large-scale RCTs, are needed to assess the use of MCO dialyzer in reducing serum FLC and its effect on clinical outcomes in patients with multiple myeloma and AKI.
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Affiliation(s)
- Riece Koniman
- Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore
| | - Su Hooi Teo
- Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore
| | - Manish Kaushik
- Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore
| | | | - Melinda Si Yun Tan
- Department of Haematology, Singapore General Hospital, Singapore, Singapore
| | - Han Khim Tan
- Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore
| | | | - Cynthia Ciwei Lim
- Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore
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Growth Differentiation Factor 15 (GDF-15) Levels Associate with Lower Survival in Chronic Kidney Disease Patients with COVID-19. Biomedicines 2022; 10:biomedicines10123251. [PMID: 36552007 PMCID: PMC9775159 DOI: 10.3390/biomedicines10123251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/09/2022] [Accepted: 12/10/2022] [Indexed: 12/15/2022] Open
Abstract
A cytokine storm drives the pathogenesis of severe COVID-19 infection and several biomarkers have been linked to mortality. Chronic kidney disease (CKD) emerged as a risk factor for severe COVID-19. We investigated the association between selected biomarkers and mortality in 77 patients hospitalized for COVID-19, and whether they differ in patients with eGFR higher and lower than 45 mL/min. The association between patients’ characteristics, plasma biomarkers and mortality was conducted by univariate logistic regression models and independent predictors of mortality were then used to create a multivariate prediction model through Cox regression. Patients with lower eGFR had a significant increase of GDF-15, CD-25 and RAGE, with higher plasma levels in non-survivors and in patients who needed ventilation. At univariate analysis, low and mid-low GDF-15 quartiles (<4.45 ng/mL) were associated with lower mortality risk, while mid-high and high quartiles (>4.45 ng/mL) were associated with higher mortality risk. Independent association between GDF-15 quartiles and mortality risk was confirmed in the Cox model and adjusted for eGFR, age, fever and dyspnea (HR 2.28, CI 1.53−3.39, p < 0.0001). The strength of the association between GDF-15 quartiles and mortality risk increased in patients with lower compared to higher eGFR (HR 2.53, CI 1.34−4.79 versus HR 1.99, CI 1.17−3.39). Our findings may suggest a further investigation of the effect of GDF-15 signaling pathway inhibition in CKD.
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Maduell F, Broseta JJ, Rodríguez-Espinosa D, del Risco J, Rodas LM, Arias-Guillén M, Vera M, Fontseré N, Salgado MDC, Rico N. Comparison of four medium cut-off dialyzers. Clin Kidney J 2022; 15:2292-2299. [PMID: 36381368 PMCID: PMC9664569 DOI: 10.1093/ckj/sfac167] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Indexed: 08/25/2023] Open
Abstract
BACKGROUND Recently, several pharmaceutical companies have developed new medium cut-off (MCO) dialyzers for expanded hemodialysis (HDx). This study aimed to compare the safety and efficacy of four MCO dialyzers, against each other and versus high-flux hemodialysis (HD) and post-dilution hemodiafiltration (HDF). METHODS A prospective study was carried out on 23 patients who underwent six dialysis sessions: two sessions with the FX80 Cordiax in HD and HDF, and four HDx sessions with the Phylther 17-SD, Vie-18X, Elisio HX19 and Theranova 400 dialyzers. The reduction ratios (RRs) of urea, creatinine, β2-microglobulin, myoglobin, kappa free immunoglobulin light chain (κFLC), prolactin, α1-microglobulin, α1-acid glycoprotein, lambda (λFLC) and albumin were compared. Dialysate albumin loss was also measured. RESULTS The differences in efficacy between the evaluated dialyzers were minimal in small molecules and even up to the size of β2-microglobulin. The main differences were found between myoglobin, κFLC, prolactin, α1-microglobulin and λFLC RRs, in which all four MCO dialyzers, with similar efficacy, were clearly superior to HD and slightly inferior to HDF treatment. Albumin losses in the dialysate with HD dialyzers were <1 g and between 1.5 and 2.5 g in HDx and HDF. The global removal score values were similar in all four HDx treatments, and again significantly higher than those with HD. CONCLUSIONS The results of the four MCO dialyzers evaluated in this study showed good efficiency, with no significant performance differences between them while being completely safe in terms of albumin loss. Likewise, the study confirms the superiority of HDx over high-flux HD with an efficacy close to that of post-dilution HDF.
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Affiliation(s)
- Francisco Maduell
- Department of Nephrology, Hospital Clínic Barcelona, Barcelona, Spain
| | | | | | - Jimena del Risco
- Department of Nephrology, Hospital Clínic Barcelona, Barcelona, Spain
| | - Lida María Rodas
- Department of Nephrology, Hospital Clínic Barcelona, Barcelona, Spain
| | | | - Manel Vera
- Department of Nephrology, Hospital Clínic Barcelona, Barcelona, Spain
| | - Néstor Fontseré
- Department of Nephrology, Hospital Clínic Barcelona, Barcelona, Spain
| | | | - Nayra Rico
- Department of Biochemistry, Hospital Clínic Barcelona, Barcelona, Spain
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Donati G, Gasperoni L, Napoli M, Scrivo A, Zappulo F, Abenavoli C, Hu L, Angelini A, Di Nunzio M, Tringali E, Cingolani A, Marchegiani BC, Rigotti A, La Manna G. Anti-Inflammatory Approach in Chronic Dialysis Patients with SARS-CoV-2: ATA or PMMA Dialyzers? Blood Purif 2022; 52:210-218. [PMID: 36323242 PMCID: PMC9782266 DOI: 10.1159/000526319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 07/21/2022] [Indexed: 12/23/2022]
Abstract
INTRODUCTION High-flux hemodialysis membranes may modulate the cytokine storm of SARS-CoV-2, but their impact on chronic hemodialysis (CHD) patients is unknown. The aim of the study was the evaluation of asymmetric cellulose triacetate (ATA) and polymethylmethacrylate (PMMA) dialyzers on inflammatory markers and clinical outcomes in CHD patients with SARS-CoV-2. METHODS A prospective, observational study on CHD patients with SARS-CoV-2 was carried out. Patients were enrolled from March 2020 to May 2021. Pre- and postdialysis C-reactive protein (CRP), procalcitonin (PCT), and interleukin-6 (IL-6) were determined at each session. Patients who underwent on-line hemodiafiltration (OLHDF) with a PMMA dialyzer were compared with those treated with OLHDF with a ATA dialyzer. The primary endpoint was the differences in the reduction ratio per session (RR) of CRP, PCT, IL-6, and IL-6 RR >25%. RESULTS We consecutively enrolled 74 CHD patients with COVID-19, 48 were treated with ATA membrane, and 26 with PMMA. Median IL-6 RR was higher in the ATA group compared to PMMA (17.08%, IQR -9.0 to 40.0 vs. 2.95%, IQR -34.63 to 27.32). Median CRP RR was 7.77% (IQR 2.47-13.77) in the ATA group versus 4.8% (IQR -2.65 to 11.38) in the PMMA group (p = 0.0017). Median PCT-RR% was 77.38% (IQR 70.92-82.97) in ATA group versus 54.59% (IQR 42.62-63.16) in the PMMA group (p < 0.0001). A multiple logistic regression analysis with IL-6 RR >25% as the outcome including the membrane employed, pre-dialysis IL-6, CRP, PCT, and ferritin showed that ATA led to a higher probability to reach the outcome (OR 1.891, 95% CI 1.273-2.840, p = 0.0018) while higher CRP favors the risk of lower IL-6 RR values (OR 0.910, 95% CI 0.868-0.949, p ≤ 0.0001). CONCLUSIONS In SARS-CoV-2 CHD patients treated with OLHDF, ATA showed a better anti-inflammatory profile, regarding IL-6 RR, compared to PMMA.
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Affiliation(s)
- Gabriele Donati
- Nephrology, Dialysis and Renal Transplantation Unit, Azienda Ospedaliero-Universitaria di Modena, Modena, Italy,Surgical, Medical, Dental and Morphological Sciences Department (CHIMOMO), University of Modena and Reggio Emilia, Modena, Italy
| | - Lorenzo Gasperoni
- Nephrology and Dialysis Unit, Azienda USL della Romagna, Infermi Hospital, Rimini, Italy
| | - Marianna Napoli
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Anna Scrivo
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Fulvia Zappulo
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Chiara Abenavoli
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Lilio Hu
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Andrea Angelini
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Miriam Di Nunzio
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Edoardo Tringali
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Alessandra Cingolani
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Beatrice Claudia Marchegiani
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Angelo Rigotti
- Nephrology and Dialysis Unit, Azienda USL della Romagna, Infermi Hospital, Rimini, Italy
| | - Gaetano La Manna
- Nephrology Dialysis and Renal Transplantation Unit, S. Orsola University Hospital, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy,Department of Experimental Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy,*Gaetano La Manna,
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A randomized prospective cross over study on the effects of medium cut-off membranes on T cellular and serologic immune phenotypes in hemodialysis. Sci Rep 2022; 12:16419. [PMID: 36180564 PMCID: PMC9524345 DOI: 10.1038/s41598-022-20818-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 09/19/2022] [Indexed: 11/08/2022] Open
Abstract
Extended cut-off filtration by medium cut-off membranes (MCO) has been shown to be safe in maintenance hemodialysis (HD). The notion of using them for the control of chronic low-grade inflammation and positively influencing cellular immune aberrations seems tempting. We conducted an open label, multicenter, randomized, 90 day 2-phase cross over clinical trial (MCO- vs. high flux-HD). 46 patients underwent randomization of which 34 completed the study. Dialysate- or pre- and post-dialysis serum inflammatory mediators were assayed for each study visit. Ex vivo T cell activation was assessed from cryopreserved leucocytes by flow cytometry. Linear mixed models were used to compare treatment modalities, with difference in pre-dialysis serum MCP-1 levels after 3 months as the predefined primary endpoint. Filtration/dialysate concentrations of most mediators, including MCP-1 (mean ± SD: 10.5 ± 5.9 vs. 5.1 ± 3.8 pg/ml, P < 0.001) were significantly increased during MCO- versus high flux-HD. However, except for the largest mediator studied, i.e., YKL-40, this did not confer any advantages for single session elimination kinetics (post-HD mean ± SD: 360 ± 334 vs. 564 ± 422 pg/ml, P < 0.001). No sustained reduction of any of the studied mediators was found neither. Still, the long-term reduction of CD69+ (P = 0.01) and PD1+ (P = 0.02) activated CD4+ T cells was striking. Thus, MCO-HD does not induce reduction of a broad range of inflammatory mediators studied here. Long-term reduction over a 3-month period was not possible. Increased single session filtration, as evidenced by increased dialysate concentrations of inflammatory mediators during MCO-HD, might eventually be compensated for by compartment redistribution or increased production during dialysis session. Nevertheless, lasting effects on the T-cell phenotype were seen, which deserves further investigation.
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Effects of Medium Cut-Off Polyarylethersulfone and Polyvinylpyrrolidone Blend Membrane Dialyzers in Hemodialysis Patients: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. MEMBRANES 2022; 12:membranes12050443. [PMID: 35629769 PMCID: PMC9144787 DOI: 10.3390/membranes12050443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/15/2022] [Accepted: 04/15/2022] [Indexed: 11/25/2022]
Abstract
The use of medium cut-off (MCO) polyarylethersulfone and polyvinylpyrrolidone blend membrane is an emerging mode in hemodialysis. Recent studies have shown that MCO membranes exhibit a middle high molecular weight uremic toxin clearance superior to standard high flux hemodialysis. We conducted a systematic literature review and meta-analysis of randomized controlled trials to investigate whether MCO membranes efficiently increase the reduction ratio of middle molecules, and to explore the potential clinical applications of MCO membranes. We selected articles that compared beta 2-microglobulin (β2M), kappa free light chain (κFLC), lambda free light chain (λFLC), interleukin-6 (IL-6), and albumin levels among patients undergoing hemodialysis. Five randomized studies with 328 patients were included. The meta-analysis demonstrated a significantly higher reduction ratio of serum β2M (p < 0.0001), κFLC (p < 0.0001), and λFLC (p = 0.02) in the MCO group. No significant difference was found in serum IL-6 levels after hemodialysis. Albumin loss was observed in the MCO group (p = 0.04). In conclusion, this meta-analysis study demonstrated the MCO membranes’ superior ability to clear β2M, κFLC, and λFLC. Serum albumin loss is an issue and should be monitored. Further studies are expected to identify whether MCO membranes could significantly improve clinical outcomes and overall survival.
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12
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Zhao Y, Gan L, Niu Q, Ni M, Zuo L. Efficacy and safety of expanded hemodialysis in hemodialysis patients: a meta-analysis and systematic review. Ren Fail 2022; 44:541-550. [PMID: 35343378 PMCID: PMC8967190 DOI: 10.1080/0886022x.2022.2048855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background Expanded hemodialysis (HDx) is a new dialysis modality, but a systematic review of the clinical effects of using HDx is lacking. This systematic review and meta-analysis aimed to assess the efficacy and safety of HDx for hemodialysis (HD) patients. Methods PubMed, the Cochrane library, and EMBASE databases were systematically searched for prospective interventional studies comparing the efficacy and safety of HDx with those of high flux HD or HDF in HD patients. Results Eighteen trials including a total of 853 HD patients were enrolled. HDx increased the reduction ratio (RR) of β2-microglobulin (SMD 6.28%, 95% CI 0.83, 1.73, p = .02), κFLC (SMD 15.86%, 95% CI 6.96, 24.76, p = .0005), and λFLC (SMD 22.42%, 95% CI, 17.95, 26.88, p < .0001) compared with high flux HD. The RR of β2-microglobulin in the HDx group was lower than that in the HDF group (SMD −3.53%, 95% CI −1.16, −1.9, p < .0001). HDx increased the RRs of κFLC (SMD 1.34%, 95% CI 0.52, 2.16, p = .001) and λFLC (SMD 7.28%, 95% CI 1.08, 13.48, p = .02) compared to HDF. There was no significant difference in albumin loss into the dialysate between the HDx and HDF groups (SMD 0.35 g/session, 95% CI −2.38, 3.09, p = .8). Conclusions This meta-analysis indicated that compared with high-flux HD and HDF, HDx can increase the clearance of medium and large-molecular-weight uremic toxins. And it does not increase the loss of albumin compared with HDF.
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Affiliation(s)
- Yuchao Zhao
- Department of Nephrology, Peking University People's Hospital, Beijing, P. R. China
| | - Liangying Gan
- Department of Nephrology, Peking University People's Hospital, Beijing, P. R. China
| | - Qingyu Niu
- Department of Nephrology, Peking University People's Hospital, Beijing, P. R. China
| | - Mengfan Ni
- Department of Nephrology, Peking University People's Hospital, Beijing, P. R. China
| | - Li Zuo
- Department of Nephrology, Peking University People's Hospital, Beijing, P. R. China
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13
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Maduell F, Broseta JJ. Hemodiafiltration (HDF) versus expanded hemodialysis (HDx). Semin Dial 2022; 35:436-439. [PMID: 35293638 DOI: 10.1111/sdi.13071] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/03/2022] [Indexed: 12/22/2022]
Abstract
Medium cutoff (MCO) membranes have resulted in a novel dialyzer class designed to improve membrane permeability and have been postulated as an alternative to online hemodiafiltration since MCO membranes may achieve similar solute clearances. These membranes have been incorporated into clinical practice, and the term expanded HD (HDx) has been proposed to differentiate from high-flux hemodialysis. Efficacy, safety, and quality of life comparison of HDF versus HDx have been reviewed in this article.
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Affiliation(s)
- Francisco Maduell
- Department of Nephrology and Renal Transplantation, Hospital Clínic of Barcelona, Barcelona, Spain
| | - José Jesús Broseta
- Department of Nephrology and Renal Transplantation, Hospital Clínic of Barcelona, Barcelona, Spain
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14
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Effects of Expanded Hemodialysis with Medium Cut-Off Membranes on Maintenance Hemodialysis Patients: A Review. MEMBRANES 2022; 12:membranes12030253. [PMID: 35323729 PMCID: PMC8953230 DOI: 10.3390/membranes12030253] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 02/04/2023]
Abstract
Kidney failure is associated with high morbidity and mortality. Hemodialysis, the most prevalent modality of renal replacement therapy, uses the principle of semipermeable membranes to remove solutes and water in the plasma of patients with kidney failure. With the evolution of hemodialysis technology over the last half century, the clearance of small water-soluble molecules in such patients is adequate. However, middle molecules uremic toxins are still retained in the plasma and cause cardiovascular events, anemia, and malnutrition, which significantly contribute to poor quality of life and high mortality in maintenance hemodialysis patients. A new class of membrane, defined as a medium cut-off (MCO) membrane, has emerged in recent years. Expanded hemodialysis with MCO membranes is now recognized as the artificial kidney model closest to natural kidney physiology. This review summarizes the unique morphological characteristics and internal filtration–backfiltration mechanism of MCO membranes, and describes their effects on removing uremic toxins, alleviating inflammation and cardiovascular risk, and improving quality of life in maintenance hemodialysis patients.
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15
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Kandi M, Brignardello-Petersen R, Couban R, Wu C, Nesrallah G. Clinical Outcomes With Medium Cut-Off Versus High-Flux Hemodialysis Membranes: A Systematic Review and Meta-Analysis. Can J Kidney Health Dis 2022; 9:20543581211067087. [PMID: 35083060 PMCID: PMC8785433 DOI: 10.1177/20543581211067087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND A novel medium cut-off (MCO) dialyzer (Theranova, Baxter Healthcare, Deerfield, IL, USA) enhances large middle molecule clearance while retaining selectivity for molecules >45 000 Da. OBJECTIVE We undertook a systematic review and meta-analysis evaluating clinical outcomes with MCO vs high-flux membranes. METHODS We searched MEDLINE, EMBASE, CINAHL, Cochrane Library, and Web of Science through July 2020, and gray literature sources from 2017. We included randomized (RS) and nonrandomized studies (NRS) comparing MCO and high-flux membranes in adults receiving maintenance hemodialysis. Pairs of reviewers performed study selection, data extraction, and risk of bias assessment in duplicate. We conducted random-effects pairwise meta-analyses to pool results across studies and used the Grading of Recommendations Assessment, Development and Evaluation approach to assess evidence certainty. RESULTS We identified 22 eligible studies (6 RS, 16 NRS; N = 1811 patients; patient-years = 1546). The MCO dialyzer improved (estimate; 95% confidence interval [CI]; certainty rating) quality of life (mean difference [MD] = 16.7/100 points; 6.9 to 26.4; moderate), Kidney Disease Quality of Life Instrument (KDQOL) subscales-burden (MD = 4.0; 1.1 to 6.9; moderate) and effects (MD = 5.4; 3.2 to 7.6; moderate), pruritus (MD = -4.4; -7.1 to -1.7; moderate), recovery time (MD = -420 minutes; -541 to -299; high), and restless legs syndrome (odds ratio = 0.39; 0.29 to 0.53; moderate). There was little to no difference in all-cause mortality (risk difference = -0.4%; -2.8 to 2.1; moderate) and serious adverse events (rate ratio = 0.63; 0.38 to 1.04; low). MCO dialysis reduced hospitalization (rate ratio = 0.48; 0.27 to 0.84; low), infection (rate ratio = 0.38; 0.17 to 0.85; moderate), hospitalization days (MD = -1.5 days; 95% CI, -2.22 to -0.78; moderate), erythropoiesis resistance index (MD = -2.92 U/kg/week/g/L; 95% CI, -4.25 to -1.6; moderate) and cumulative iron use over 12 weeks (MD = -293 mg; 95% CI, -368 to -218; moderate). We found with low certainty that MCO dialysis had little to no effect on KDQOL symptoms/problem list, pain, and physical health and moderate certainty that MCO dialysis likely has no effect on the KDQOL mental health composite. CONCLUSIONS We found with predominantly moderate certainty that the MCO dialyzer improves several patient-important outcomes with no apparent risks or harms. More definitive studies are needed to better quantify the effects of MCO membranes on mortality, hospitalization, and other rare events.
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Affiliation(s)
- Maryam Kandi
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, ON, Canada
| | | | - Rachel Couban
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, ON, Canada
| | | | - Gihad Nesrallah
- University of Toronto, ON, Canada
- Nephrology Program, Humber River Hospital, Toronto, ON, Canada
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16
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Kandi M, Brignardello-Petersen R, Couban R, Wu C, Nesrallah G. Effects of Medium Cut-Off Versus High-Flux Hemodialysis Membranes on Biomarkers: A Systematic Review and Meta-Analysis. Can J Kidney Health Dis 2022; 9:20543581211067090. [PMID: 35070336 PMCID: PMC8777328 DOI: 10.1177/20543581211067090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Medium cut-off (MCO) membranes enhance large middle-molecule clearance while selectively retaining molecules >45 000 Da. OBJECTIVES We undertook a systematic review and meta-analysis comparing the effects of MCO versus high-flux membranes on biomarkers. METHODS We searched MEDLINE, Embase, CINAHL, Cochrane Library, and Web of Science from January 2015 to July 2020, and gray literature sources from 2017. We included randomized (RS) and nonrandomized studies (NRS) comparing MCO and high-flux membranes in adults (>18 years) receiving maintenance hemodialysis. We performed study selection, data extraction, and quality appraisals in duplicate and used the Grading of Recommendations Assessment, Development, and Evaluation framework. Outcomes included solute removal (plasma clearance or dialysate quantitation), reduction ratios, and predialysis serum concentrations for a range of prespecified large middle molecules. RESULTS We identified 26 eligible studies (10 RS and 16 NRS; N = 1883 patients; patient-years = 1366.3). The mean difference (MD) for albumin removal was 2.31 g per session (95% confidence interval [CI], 2.79 to 1.83; high certainty), with a reduction in predialysis albumin of -0.12 g/dl (95% CI, -0.16 to -0.07; I 2 = 0%; high certainty) in the first 24 weeks, returning to normal (MD = -0.02 g/dl, 95% CI, -0.07 to -0.03; I 2 = 56%; high certainty) after 24 weeks. We also found with high certainty that MCO dialysis resulted in a large increase (standardized mean difference [SMD]> 2.0 for all) in β2-microglobulin, κ- and λ-free light chains, and myoglobin removal, resulting in moderate (SMD > 0.5) to large (SMD > 0.8) reductions in predialysis concentrations for all of these solutes. Medium cut-off dialysis increased the reduction ratio for tumor necrosis factor-alpha (TNF-α) by 7.7% (95% CI, 4.7 to 10.6; moderate certainty), and reduced predialysis TNF-α by SMD -0.48 (95% CI, -0.91 to -0.04; moderate certainty). We found with moderate certainty that MCO dialysis had little to no effect on predialysis interleukin-6 (IL-6) plasma concentrations. Medium cut-off dialysis reduced mRNA expression of TNF-α and IL-6 in peripheral leukocytes by MD -15% (95% CI, -19.6 to -10.4; moderate certainty) and -8.8% (95% CI, -10.2 to -7.4; moderate certainty), respectively. CONCLUSION Medium cut-off dialysis increases the clearance of a wide range of large middle molecules and likely reduces inflammatory mediators with a concomitant transient reduction in serum albumin concentration. The net effect of MCO dialysis on large middle molecules could translate into important clinical effects.
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Affiliation(s)
- Maryam Kandi
- Department of Health Research Methods,
Evidence & Impact, McMaster University, Hamilton, ON, Canada
| | | | - Rachel Couban
- Department of Health Research Methods,
Evidence & Impact, McMaster University, Hamilton, ON, Canada
| | | | - Gihad Nesrallah
- University of Toronto, ON, Canada
- Nephrology Program, Humber River
Hospital, Toronto, ON, Canada
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17
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Abstract
The year 2021 was the last full year of Alberto Ortiz’s editorship at Clinical Kidney Journal (CKJ). On May 2022, Maria José Soler will start her term as the Editor-in-Chief. Over these years, CKJ obtained its first journal impact factor and has consolidated its position among the top journals in the field, consistently ranking among the top 25% (first quartile) journals in Urology and Nephrology. The 2020 journal impact factor rose to 4.45, becoming the top open access journal in Nephrology and the ninth ranked Nephrology journal overall. We now review the recent history of the journal and the most highly cited topics which include the epidemiology of kidney disease, chronic kidney disease topics, such as the assessment and treatment of chronic kidney disease, onconephrology, cardionephrology, glomerular disease, transplantation and coronavirus disease 2019 (COVID-19).
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18
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Ueda Y, Ookawara S, Ito K, Sasabuchi Y, Hayasaka H, Kofuji M, Uchida T, Imai S, Kiryu S, Minato S, Miyazawa H, Sanayama H, Hirai K, Tabei K, Morishita Y. Association between hepatic oxygenation on near-infrared spectroscopy and clinical factors in patients undergoing hemodialysis. PLoS One 2021; 16:e0259064. [PMID: 34673824 PMCID: PMC8530328 DOI: 10.1371/journal.pone.0259064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 10/11/2021] [Indexed: 11/18/2022] Open
Abstract
The hepato-splanchnic circulation directly influences oxygenation of the abdominal organs and plays an important role in compensating for the blood volume reduction that occurs in the central circulation during hemodialysis (HD) with ultrafiltration. However, the hepato-splanchnic circulation and oxygenation cannot be easily evaluated in the clinical setting of HD therapy. We included 185 HD patients and 15 healthy volunteers as the control group in this study. Before HD, hepatic regional oxygen saturation (rSO2), a marker of hepatic oxygenation reflecting the hepato-splanchnic circulation and oxygenation, was monitored using an INVOS 5100c oxygen saturation monitor. Hepatic rSO2 was significantly lower in patients undergoing HD than in healthy controls (56.4 ± 14.9% vs. 76.2 ± 9.6%, p < 0.001). Multivariable regression analysis showed that hepatic rSO2 was independently associated with body mass index (BMI; standardized coefficient: 0.294), hemoglobin (Hb) level (standardized coefficient: 0.294), a history of cardiovascular disease (standardized coefficient: -0.157), mean blood pressure (BP; standardized coefficient: 0.154), and serum albumin concentration (standardized coefficient: 0.150) in Model 1 via a simple linear regression analysis. In Model 2 using the colloid osmotic pressure (COP) in place of serum albumin concentration, the COP (standardized coefficient: 0.134) was also identified as affecting hepatic rSO2. Basal hepatic oxygenation before HD might be affected by BMI, Hb levels, a history of cardiovascular disease, mean BP, serum albumin concentration, and the COP. Further prospective studies are needed to clarify whether changes in these parameters, including during HD, affect the hepato-splanchnic circulation and oxygenation in HD patients.
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Affiliation(s)
- Yuichiro Ueda
- Division of Nephrology, Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Susumu Ookawara
- Division of Nephrology, Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
- * E-mail:
| | - Kiyonori Ito
- Division of Nephrology, Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | | | - Hideyuki Hayasaka
- Department of Clinical Engineering, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Masaya Kofuji
- Department of Clinical Engineering, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Takayuki Uchida
- Department of Clinical Engineering, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Sojiro Imai
- Department of Dialysis, Minami-Uonuma City Hospital, Niigata, Japan
| | - Satoshi Kiryu
- Department of Dialysis, Minami-Uonuma City Hospital, Niigata, Japan
| | - Saori Minato
- Division of Nephrology, Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Haruhisa Miyazawa
- Division of Nephrology, Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Hidenori Sanayama
- Division of Neurology, Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Keiji Hirai
- Division of Nephrology, Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Kaoru Tabei
- Department of Dialysis, Minami-Uonuma City Hospital, Niigata, Japan
| | - Yoshiyuki Morishita
- Division of Nephrology, Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
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19
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Pelayo-Alonso R, Cobo-Sánchez JL, Patricia Martínez-Álvarez P, Portilla-Sánchez M, Ibarguren-Rodríguez E. Hemodiálisis extendida frente a convencional o hemodiafiltración en línea. Estudio comparativo de necesidad de heparina y coagulación del sistema. ENFERMERÍA NEFROLÓGICA 2021. [DOI: 10.37551/s2254-28842021024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Introducción: La reciente aparición de membranas de corte medio ofrece una alternativa para la eliminación de moléculas medianas y nueva terapia dialítica, la hemodiálisis expandida. Estas membranas se caracterizan por un mayor tamaño de poro que podría afectar a la eliminación de la heparina utilizada durante las sesiones de hemodiálisis. Objetivo: Determinar si existen diferencias en la necesidad de heparina y el estado de coagulación del sistema y dializador según técnica dialítica empleada. Material y Método: Estudio cuasiexperimental en pacientes en hemodiálisis con dos periodos de estudio, en el primero, el paciente realizó hemodiálisis convencional o hemodiafiltración y en el segundo, hemodiálisis expandida con membranas de corte medio. Resultados: El dializador quedó parcialmente coagulado en el 10,3% de las sesiones de hemodiálisis expandida frente al 19,1% de las sesiones de hemodiálisis y el 11,4% de hemodiafiltración (p=0,011). Conclusiones: La hemodiálisis expandida ofrece mejor estado de coagulación final del sistema y dializador que otras membranas.
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Affiliation(s)
- Raquel Pelayo-Alonso
- UC Nefrología-Unidad de Hemodiálisis. Hospital Universitario Marqués de Valdecilla. Santander. España
| | - José Luis Cobo-Sánchez
- Subdirección de Cuidados. Servicio Cántabro de Salud. Santander. España. Escuela Universitaria de Enfermería Clínica Mompía. Universidad Católica de Ávila. Mompía. España
| | | | - Marta Portilla-Sánchez
- UC Nefrología-Unidad de Hemodiálisis. Hospital Universitario Marqués de Valdecilla. Santander. España
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20
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Maheshwari V, Tao X, Thijssen S, Kotanko P. Removal of Protein-Bound Uremic Toxins Using Binding Competitors in Hemodialysis: A Narrative Review. Toxins (Basel) 2021; 13:toxins13090622. [PMID: 34564626 PMCID: PMC8473190 DOI: 10.3390/toxins13090622] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/28/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022] Open
Abstract
Removal of protein-bound uremic toxins (PBUTs) during conventional dialysis is insufficient. PBUTs are associated with comorbidities and mortality in dialysis patients. Albumin is the primary carrier for PBUTs and only a small free fraction of PBUTs are dialyzable. In the past, we proposed a novel method where a binding competitor is infused upstream of a dialyzer into an extracorporeal circuit. The competitor competes with PBUTs for their binding sites on albumin and increases the free PBUT fraction. Essentially, binding competitor-augmented hemodialysis is a reactive membrane separation technique and is a paradigm shift from conventional dialysis therapies. The proposed method has been tested in silico, ex vivo, and in vivo, and has proven to be very effective in all scenarios. In an ex vivo study and a proof-of-concept clinical study with 18 patients, ibuprofen was used as a binding competitor; however, chronic ibuprofen infusion may affect residual kidney function. Binding competition with free fatty acids significantly improved PBUT removal in pre-clinical rat models. Based on in silico analysis, tryptophan can also be used as a binding competitor; importantly, fatty acids or tryptophan may have salutary effects in HD patients. More chemoinformatics research, pre-clinical, and clinical studies are required to identify ideal binding competitors before routine clinical use.
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Affiliation(s)
- Vaibhav Maheshwari
- Renal Research Institute, New York, NY 10065, USA; (X.T.); (S.T.); (P.K.)
- Correspondence:
| | - Xia Tao
- Renal Research Institute, New York, NY 10065, USA; (X.T.); (S.T.); (P.K.)
| | - Stephan Thijssen
- Renal Research Institute, New York, NY 10065, USA; (X.T.); (S.T.); (P.K.)
| | - Peter Kotanko
- Renal Research Institute, New York, NY 10065, USA; (X.T.); (S.T.); (P.K.)
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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21
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Ciceri P, Cozzolino M. Expanded Haemodialysis as a Current Strategy to Remove Uremic Toxins. Toxins (Basel) 2021; 13:toxins13060380. [PMID: 34073439 PMCID: PMC8226798 DOI: 10.3390/toxins13060380] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/20/2021] [Accepted: 05/22/2021] [Indexed: 01/04/2023] Open
Abstract
Chronic kidney disease (CKD) is characterized by the retention of solutes named uremic toxins, which strongly associate with high morbidity and mortality. Mounting evidence suggests that targeting uremic toxins and/or their pathways may decrease the risk of cardiovascular disease in CKD patients. Dialysis therapies have been developed to improve removal of uremic toxins. Advances in our understanding of uremic retention solutes as well as improvements in dialysis membranes and techniques (HDx, Expanded Hemodialysis) will offer the opportunity to ameliorate clinical symptoms and outcomes, facilitate personalized and targeted dialysis treatment, and improve quality of life, morbidity and mortality.
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Affiliation(s)
- Paola Ciceri
- Renal Research Laboratory, Department of Nephrology, Dialysis and Renal Transplant, Fondazione Ca’ Granda IRCCS, Ospedale Maggiore Policlinico, 20122 Milan, Italy;
| | - Mario Cozzolino
- Renal Division, ASST Santi Paolo e Carlo, Department of Health Sciences, University of Milan, 20142 Milan, Italy
- Correspondence: ; Tel.: +39-02-81844215
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22
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Perez-Garcia R, Alcazar-Arroyo R, de Sequera-Ortiz P. What is the role of expanded hemodialysis in renal replacement therapy in 2020? Nefrologia 2021; 41:227-236. [PMID: 36166240 DOI: 10.1016/j.nefroe.2021.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/13/2020] [Indexed: 06/16/2023] Open
Affiliation(s)
- Rafael Perez-Garcia
- Hospital Universitario Infanta Leonor, Servicio de Nefrología, Madrid, Spain.
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23
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Esposito P, Cipriani L, Verzola D, Grignano MA, De Amici M, Testa G, Grosjean F, Russo E, Garibotto G, Rampino T, Viazzi F. Effects of Different Dialysis Strategies on Inflammatory Cytokine Profile in Maintenance Hemodialysis Patients with COVID-19: A Randomized Trial. J Clin Med 2021; 10:jcm10071383. [PMID: 33808205 PMCID: PMC8037035 DOI: 10.3390/jcm10071383] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/17/2021] [Accepted: 03/26/2021] [Indexed: 02/06/2023] Open
Abstract
Uncontrolled inflammation plays a relevant role in the pathogenesis of coronavirus disease-19 (COVID-19). Here, we studied the time trend of inflammatory markers in a population of hemodialysis (HD) patients affected by COVID-19, undergoing two different dialysis approaches. In a prospective study, thirty-one maintenance HD patients with COVID-19 were randomized to expanded HD (HDx), performed using a medium cut-off membrane, or standard treatment using a protein-leaking dialyzer (PLD). Circulating levels of interleukin-6 (IL-6), interleukin-8 (IL-8), interleukin-10 (IL-10), soluble TLR4 (sTLR4), and interferon-gamma (IFN-γ), were collected at diagnosis, and one and two weeks after. Compared with 14 non-infected HD patients, COVID-19 patients showed lymphopenia and higher ferritin and lactate dehydrogenase levels. Moreover, COVID-19 patients had higher levels of IL-10 (15.2 (12.5) vs. 1.2 (1.4) pg/mL, p = 0.02). Twenty-nine patients were randomized to HDx (n = 15) or PLD (n = 14). After a single treatment, IL-8 showed a significant reduction in both groups, whereas IL-10 decreased only in HDx. All over the study, there were no significant modifications in circulating cytokine levels between the two groups, except for a parallel increase of IL-8 and IL-10 at one week control in the HDx group. No correlations were found between cytokine levels and clinical outcomes. In maintenance HD patients, COVID-19 is not related to a sustained inflammatory response. Therefore, modulation of inflammation seems not to be a suitable therapeutic target in this specific population.
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Affiliation(s)
- Pasquale Esposito
- Department of Internal Medicine, University of Genova, 16132 Genova, Italy; (L.C.); (D.V.); (E.R.); (G.G.); (F.V.)
- IRCCS Ospedale Policlinico San Martino, Clinica Nefrologica, Dialisi, Trapianto, 16132 Genova, Italy
- Correspondence:
| | - Leda Cipriani
- Department of Internal Medicine, University of Genova, 16132 Genova, Italy; (L.C.); (D.V.); (E.R.); (G.G.); (F.V.)
| | - Daniela Verzola
- Department of Internal Medicine, University of Genova, 16132 Genova, Italy; (L.C.); (D.V.); (E.R.); (G.G.); (F.V.)
| | - Maria Antonietta Grignano
- Unit of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, and University of Pavia, 27100 Pavia, Italy; (M.A.G.); (F.G.); (T.R.)
| | - Mara De Amici
- Laboratory of Immuno-Allergology of Clinical Chemistry and Pediatric Clinic, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy;
| | - Giorgia Testa
- Pediatrics Clinic, Fondazione IRCCS Policlinico San Matteo, University of Pavia, 27100 Pavia, Italy;
| | - Fabrizio Grosjean
- Unit of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, and University of Pavia, 27100 Pavia, Italy; (M.A.G.); (F.G.); (T.R.)
| | - Elisa Russo
- Department of Internal Medicine, University of Genova, 16132 Genova, Italy; (L.C.); (D.V.); (E.R.); (G.G.); (F.V.)
| | - Giacomo Garibotto
- Department of Internal Medicine, University of Genova, 16132 Genova, Italy; (L.C.); (D.V.); (E.R.); (G.G.); (F.V.)
| | - Teresa Rampino
- Unit of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, and University of Pavia, 27100 Pavia, Italy; (M.A.G.); (F.G.); (T.R.)
| | - Francesca Viazzi
- Department of Internal Medicine, University of Genova, 16132 Genova, Italy; (L.C.); (D.V.); (E.R.); (G.G.); (F.V.)
- IRCCS Ospedale Policlinico San Martino, Clinica Nefrologica, Dialisi, Trapianto, 16132 Genova, Italy
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24
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[What is the role of expanded hemodialysis in renal replacement therapy in 2020?]. Nefrologia 2021; 41:227-236. [PMID: 33685663 DOI: 10.1016/j.nefro.2020.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/13/2020] [Indexed: 10/22/2022] Open
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25
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Galassi A, Magagnoli L, Cozzolino M. COVID-19 in a dialysis center in Milan from March to June 2020: understanding how to respond to the second wave of the pandemic. J Nephrol 2021; 34:11-14. [PMID: 33534068 PMCID: PMC7857107 DOI: 10.1007/s40620-020-00933-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Andrea Galassi
- Renal and Dialysis Unit, San Paolo Hospital, ASST Santi Paolo e Carlo, Milan, Italy.,Department of Health Sciences, Renal Division, ASST Santi Paolo E Carlo, University of Milan, Milan, Italy
| | - Lorenza Magagnoli
- Renal and Dialysis Unit, San Paolo Hospital, ASST Santi Paolo e Carlo, Milan, Italy.,Department of Health Sciences, Renal Division, ASST Santi Paolo E Carlo, University of Milan, Milan, Italy
| | - Mario Cozzolino
- Renal and Dialysis Unit, San Paolo Hospital, ASST Santi Paolo e Carlo, Milan, Italy. .,Department of Health Sciences, Renal Division, ASST Santi Paolo E Carlo, University of Milan, Milan, Italy.
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26
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Galassi A, Casanova F, Gazzola L, Rinaldo R, Ceresa M, Restelli E, Giorgini A, Birocchi S, Giovenzana M, Zoni U, Valli F, Massironi L, Belletti S, Magagnoli L, Stucchi A, Ippolito M, Carugo S, Parazzini E, Cozzolino M. SARS-CoV-2-related ARDS in a maintenance hemodialysis patient: case report on tailored approach by daily hemodialysis, noninvasive ventilation, tocilizumab, anxiolytics, and point-of-care ultrasound. Clin Case Rep 2021; 9:694-703. [PMID: 33362933 PMCID: PMC7753751 DOI: 10.1002/ccr3.3623] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 12/13/2022] Open
Abstract
Without rescue drugs approved, holistic approach by daily hemodialysis, noninvasive ventilation, anti-inflammatory medications, fluid assessment by bedside ultrasound, and anxiolytics improved outcomes of a maintenance hemodialysis patient affected by severe COVID-19.
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Affiliation(s)
- Andrea Galassi
- Renal & Dialysis UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Francesca Casanova
- Internal Medicine UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Lidia Gazzola
- Department of Health SciencesClinic of Infectious Disease“San Paolo” Hospital‐University of MilanMilanItaly
| | - Rocco Rinaldo
- Respiratory UnitDepartment of Health SciencesUniversity of MilanASST Santi Paolo e CarloMilanItaly
| | - Marco Ceresa
- Palliative Care UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Elena Restelli
- Internal Medicine UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Alessia Giorgini
- Gastroenterology and Hepatology UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Simone Birocchi
- Internal Medicine UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Marco Giovenzana
- Unit of Hepatobiliary, Pancreatic, and Digestive SurgeryDepartment of SurgeryS. Paolo HospitalUniversity of MilanMilanItaly
| | - Ulisse Zoni
- Internal Medicine UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Federica Valli
- Division of CardiologyS. Paolo HospitalUniversity of MilanMilanItaly
| | - Laura Massironi
- Division of CardiologyS. Paolo HospitalUniversity of MilanMilanItaly
| | | | - Lorenza Magagnoli
- Renal & Dialysis UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Andrea Stucchi
- Renal & Dialysis UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Michela Ippolito
- Renal & Dialysis UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
| | - Stefano Carugo
- Division of CardiologyS. Paolo HospitalUniversity of MilanMilanItaly
| | - Elena Parazzini
- Respiratory UnitDepartment of Health SciencesUniversity of MilanASST Santi Paolo e CarloMilanItaly
| | - Mario Cozzolino
- Renal & Dialysis UnitS. Paolo HospitalASST Santi Paolo e CarloMilanItaly
- Department of Health SciencesUniversity of MilanMilanItaly
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27
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Kalantar-Zadeh K, Ficociello LH, Bazzanella J, Mullon C, Anger MS. Slipping Through the Pores: Hypoalbuminemia and Albumin Loss During Hemodialysis. Int J Nephrol Renovasc Dis 2021; 14:11-21. [PMID: 33505168 PMCID: PMC7829597 DOI: 10.2147/ijnrd.s291348] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 12/30/2020] [Indexed: 12/12/2022] Open
Abstract
Hypoalbuminemia results when compensatory mechanisms are unable to keep pace with derangements in catabolism/loss and/or decreased synthesis of albumin. Across many disease states, including chronic kidney disease (CKD), hypoalbuminemia is a well-established, independent risk factor for adverse outcomes, including mortality. In the setting of CKD, reduced serum albumin concentrations are often a manifestation of protein-energy wasting, a state of metabolic and nutritional alterations resulting in reduced protein and energy stores. The progression of CKD to kidney failure and the initiation of maintenance hemodialysis (HD) further predisposes an already at-risk population toward hypoalbuminemia such that approximately 60% of HD patients have albumin concentrations <4.0 g/dl. Albumin loss into the dialysate through the dialyzer appears to be a potentially modifiable cause of hypoalbuminemia in some patients. A group of newer dialyzers for maintenance HD-sometimes termed protein-leaking or medium cut-off membranes-aim to improve clearance of middle molecules (vs high flux dialyzers) but are associated with increased albumin losses. In this article, we will examine the impact of dialyzer selection on albumin losses during conventional HD, including the clinical relevance of such losses on serum albumin levels. Data on the clinical relevance of albumin losses during dialysis and current gaps in the evidence base are also discussed.
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Affiliation(s)
- Kamyar Kalantar-Zadeh
- Division of Nephrology, Hypertension and Kidney Transplantation, University of California, Irvine, School of Medicine, Orange, CA, USA
- Department of Epidemiology, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
- Los Angeles Biomedical Research Institute at Harbor–UCLA, Torrance, CA, USA
| | | | | | - Claudy Mullon
- Fresenius Medical Care Renal Therapies Group, Waltham, MA, USA
| | - Michael S Anger
- Fresenius Medical Care Renal Therapies Group, Waltham, MA, USA
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28
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Yalın SF, Altıparmak MR, Dincer MT, Yadigar S, Murt A, Parmaksiz E, Ronco C. Medium Cut-Off Dialysis Membranes: Can They Have Impact on Outcome of COVID-19 Hemodialysis Patients? Blood Purif 2021; 50:921-924. [PMID: 33445173 PMCID: PMC7900453 DOI: 10.1159/000513621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/08/2020] [Indexed: 12/19/2022]
Abstract
Introduction Severe acute respiratory syndrome coronavirus-2 may lead to high levels of expression of inflammatory cytokines. Medium cut-off (MCO) membranes may make greater clearances for large-middle molecules (including cytokines) than low-flux (LF) membranes. In this study, we aimed to evaluate the impact of MCO membranes on outcome of COVID-19 patients on hemodialysis (HD). Methods Sixty COVID-19 HD patients were included in this study. The patients were categorized into 2 groups regarding type of HD membranes. Clinical data were taken from medical records. Results Initial crp and ferritin levels, which are surragates of cytokine storm and severity of disease in COVID-19, were significantly higher in MCO membrane group compared to LF group (p = 0.037 and 0.000, respectively). Although there were more patients with severe disease in MCO group, there were no significant differences regarding need for intensive care unit and death. Conclusion It may be an option to use MCO membranes in HD patients with COVID-19 in order to reduce cytokine levels and prevent cytokine storm.
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Affiliation(s)
- Serkan Feyyaz Yalın
- Department of Nephrology, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey,
| | - Mehmet Rıza Altıparmak
- Department of Nephrology, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Mevlut Tamer Dincer
- Department of Nephrology, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Serap Yadigar
- Department of Nephrology, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
| | - Ahmet Murt
- Department of Nephrology, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Ergun Parmaksiz
- Department of Nephrology, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
| | - Claudio Ronco
- Department of Medicine (DIMED), University of Padova, Padova, Italy.,Department of Nephrology, Dialysis and Transplantation, San Bortolo Hospital, International Renal Research Institute of Vicenza, Vicenza, Italy
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29
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Cozzolino M, Ronco C. Medium Cut-Off Membranes: Incremental or Quantum Leap Innovation in Haemodialysis? Blood Purif 2020; 50:449-452. [PMID: 33352554 DOI: 10.1159/000512537] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 10/23/2020] [Indexed: 11/19/2022]
Affiliation(s)
- Mario Cozzolino
- Division of Nephrology and Dialysis, Department of Health Sciences, University of Milan, ASST Santi Paolo e Carlo, Milan, Italy,
| | - Claudio Ronco
- Department of Medicine, University of Padua, Padua, Italy.,Department of Nephrology, Dialysis and Kidney Transplant, International Renal Research Institute, San Bortolo Hospital, Vicenza, Italy
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Ciceri P, Tettamanti G, Galassi A, Magagnoli L, Fabresse N, Alvarez JC, Massy ZA, Messa P, Cozzolino M. Pro-calcifying analysis of uraemic serum from patients treated with medium cut-off membrane in a prospective, cross-over study. Clin Kidney J 2020; 14:1798-1807. [PMID: 34221387 PMCID: PMC8243281 DOI: 10.1093/ckj/sfaa216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/08/2020] [Indexed: 12/23/2022] Open
Abstract
Background The retention of a large number of solutes that are normally excreted or metabolized by the kidney is responsible for the symptoms typical in uraemic patients. These molecules are defined as uraemic toxins and can be classified into three groups: small water-soluble molecules, middle molecules and protein-bound toxins. Recently, efforts were put towards developing dialysis membranes that allow the removal of large middle molecules without clinically relevant albumin loss. These membranes are the medium cut-off (MCO) membranes that allow the removal of middle molecules up to ∼50 000 Da. Methods We performed a prospective, open-label, controlled, cross-over pilot study comparing expanded haemodialysis (HDx) (novel MCO membrane Theranova 400) and conventional haemodialysis (HD) in 20 prevalent HD patients. Ten patients used conventional HD high-flux dialyser and 10 patients used HDx for 3 months; later the patients switched and received the other treatment for a further 3 months. We then analysed the pro-calcifying effect of uraemic serum in a model of high phosphate(Pi)-induced calcification in vascular smooth muscle cells (VSMCs). Results In this study, every patient was the control of himself and, interestingly, we found a tendency of less pro-calcifying potential from HDx-treated patients' serum compared with HD. Studying pathogenetic processes involved in high Pi-induced calcium deposition, we found that uraemic serum of HDx-treated patients induced less VSMC necrosis compared with uraemic serum of HD patients. Nevertheless, no differences were found between the different dialytic treatments in the serum potential to induce apoptosis and to modulate the expression of a panel of genes involved in VSMC simil-osteoblastic differentiation such as bone morphogenetic protein 2, runt-related transcription factor 2, osteocalcin, matrix Gla protein, osteopontin, elastin and collagen I α1. In an effort to characterize the difference in uraemic toxin profile during the two different dialytic treatments, we measured a panel of 10 uraemic toxins and 3 precursors, finding a significant increased removal during HDx of 3-carboxy-4-methyl-5-propyl-2-furanpropanoic acid, tryptophane and some of its metabolites, such as 3-indoxyl sulphate, indole 3-acetic acid and kynurenine. Conclusions These preliminary data are promising, although larger patients' groups are needed to better understand the effects of HDx on vascular calcification.
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Affiliation(s)
- Paola Ciceri
- Department of Nephrology, Dialysis and Renal Transplant, Renal Research Laboratory, Fondazione Ca' Granda IRCCS, Ospedale Maggiore Policlinico, Milan, Italy
| | - Giorgia Tettamanti
- Department of Health Sciences, Renal Division, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Andrea Galassi
- Department of Health Sciences, Renal Division, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Lorenza Magagnoli
- Department of Health Sciences, Renal Division, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Nicolas Fabresse
- Laboratory of Pharmacology and Toxicology, CHU Raymond Poincare, Garches, France
| | - Jean-Claude Alvarez
- Laboratory of Pharmacology and Toxicology, CHU Raymond Poincare, Garches, France.,INSERM U-1173, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay (Versailles-Saint-Quentin-en-Yvelines), Montigny le Bretonneux, France
| | - Ziad A Massy
- Division of Nephrology, Ambroise Paré University Hospital, APHP, Boulogne-Billancourt/Paris, Paris, France.,Centre for Research in Epidemiology and Population Health (CESP), INSERM UMRS 1018, Université Paris-Saclay, Université Versailles Saint Quentin (UVSQ), Villejuif, France
| | - Piergiorgio Messa
- Department of Nephrology, Dialysis and Renal Transplant, Renal Research Laboratory, Fondazione Ca' Granda IRCCS, Ospedale Maggiore Policlinico, Milan, Italy
| | - Mario Cozzolino
- Department of Health Sciences, Renal Division, ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
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31
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Weiner DE, Falzon L, Skoufos L, Bernardo A, Beck W, Xiao M, Tran H. Efficacy and Safety of Expanded Hemodialysis with the Theranova 400 Dialyzer: A Randomized Controlled Trial. Clin J Am Soc Nephrol 2020; 15:1310-1319. [PMID: 32843372 PMCID: PMC7480550 DOI: 10.2215/cjn.01210120] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 07/14/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND OBJECTIVES Expanded hemodialysis therapy enabled by medium cut-off membranes may promote greater clearance of larger middle molecules that comprise putative uremic solutes than conventional high-flux dialysis. This randomized trial evaluated the efficacy and safety of hemodialysis treatment with a medium cut-off dialyzer. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Clinically stable patients on maintenance hemodialysis were randomized to receive dialysis with either a medium cut-off dialyzer (Theranova 400) or a high-flux dialyzer (Elisio-17H) over 24 weeks of treatment. The primary safety end point was the predialysis serum albumin level after 24 weeks of treatment. The primary efficacy end point was the reduction ratio of free λ light chains at 24 weeks of treatment. RESULTS Among 172 patients on maintenance hemodialysis, mean age was 59±13 years, 61% were men, 40% were Black, and mean dialysis vintage was 5±4 years. Of the 86 patients randomized to each dialyzer, 65 completed the trial in each group. The reduction ratio for the removal of free λ light chains was significantly higher in the Theranova 400 group compared with the Elisio-17H group after 4 weeks (39% versus 20%) and 24 weeks (33% versus 17%; both P<0.001). Among secondary end points, the Theranova 400 group demonstrated significantly larger reduction ratios at 4 and 24 weeks for complement factor D, free κ light chains, TNFα, and β2-microglobulin (P<0.001 for all), but not for IL-6. Predialysis serum albumin levels were similar between groups after 24 weeks (4 g/dl with the Theranova 400 and 4.1 g/dl with the Elisio-17H), consistent with noninferiority of the Theranova 400 dialyzer in maintaining predialysis serum albumin levels after 24 weeks of treatment. CONCLUSIONS Hemodialysis therapy with the Theranova 400 dialyzer provides superior removal of larger middle molecules, as exemplified by free λ light chains, compared with a similar size high-flux dialyzer, while maintaining serum albumin level. CLINICAL TRIAL REGISTRY NAME AND REGISTRATION NUMBER A Multi-Center, Prospective, Randomized, Controlled, Open-Label, Parallel Study to Evaluate the Safety and Efficacy of the Theranova 400 Dialyzer in End Stage Renal Disease (ESRD) Patients, NCT03257410.
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Affiliation(s)
- Daniel E. Weiner
- Tufts Medical Center, Medicine, Nephrology, Boston, Massachusetts
| | - Luke Falzon
- Baxter Healthcare Corporation, Worldwide Medical, San Gwann, Malta
| | - Line Skoufos
- Baxter Healthcare Corporation, Worldwide Medical, Deerfield, Illinois
| | - Angelito Bernardo
- Baxter Healthcare Corporation, Worldwide Medical, Deerfield, Illinois
| | - Werner Beck
- Baxter International Inc., Worldwide Medical, Hechingen, Germany
| | - Mengqi Xiao
- Baxter Healthcare Corporation, Worldwide Medical, Deerfield, Illinois
| | - Ha Tran
- Baxter Healthcare Corporation, Worldwide Medical, Deerfield, Illinois
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32
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Ronco C, Reis T, Cozzolino M. Rationale for Medium Cutoff Membranes in COVID-19 Patients Requiring Renal Replacement Therapy. Nephron Clin Pract 2020; 144:550-554. [PMID: 32750694 PMCID: PMC7490487 DOI: 10.1159/000509807] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 06/26/2020] [Indexed: 12/13/2022] Open
Abstract
The current pandemic of coronavirus disease 2019 (COVID-19) spotlighted the vulnerability of patients with chronic kidney disease stage 5 on maintenance hemodialysis (HD) to the viral infection. Social distancing is the most effective preventive measure to reduce the risk of infection. Nonetheless, the necessity to frequently reach the dialysis center and the inherent social gathering both impede social distancing and also self-quarantine for infected individuals. A baseline hyperinflammatory state driven by factors such as the retention of uremic toxins afflicts these patients. Concomitantly, a condition of relative immunosuppression is also attributed to similar factors. The use of high-flux (HF) dialyzers for HD is the standard of care. However, with HF membranes, the removal of large middle molecules is scant. Medium cutoff (MCO) dialyzers are a new class of membranes that allow substantial removal of large middle molecules with negligible albumin losses. Recent trials confirmed long-term safety and long-term sustained reduction in the concentration of large uremic toxins with MCO dialyzers. Herein, we discuss the rationale for applying MCO membranes in COVID-19 patients and its possible immunoadjuvant effects that could mitigate the burden of COVID-19 infection in dialysis patients. We also discuss the direct cytopathic effect of the virus on renal tissue and extracorporeal blood purification techniques that can prevent kidney damage or reduce acute kidney injury progression.
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Affiliation(s)
- Claudio Ronco
- Department of Medicine (DIMED), University of Padova, Padova, Italy
- Department of Nephrology, Dialysis and Transplantation, International Renal Research Institute of Vicenza, San Bortolo Hospital, Vicenza, Italy
| | - Thiago Reis
- Department of Nephrology, Dialysis and Transplantation, International Renal Research Institute of Vicenza, San Bortolo Hospital, Vicenza, Italy
- Department of Nephrology, Clínica de Doenčas Renais de Brasília, Brasília, Brazil
| | - Mario Cozzolino
- Department of Health Sciences, University of Milan, Milan, Italy
- Department of Nephrology and Dialysis, ASST Santi Paolo e Carlo, Milan, Italy
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