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Hosseininasab SS, Dhiaa SM, Shahrtash SA, Lak M, Faghihkhorasani A, Mahdi F. The interaction between klotho protein and epigenetic alteration in diabetes and treatment options. J Diabetes Metab Disord 2024; 23:333-341. [PMID: 38932867 PMCID: PMC11196449 DOI: 10.1007/s40200-024-01387-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/11/2024] [Indexed: 06/28/2024]
Abstract
Introduction Klotho is a membrane protein predominantly expressed in the kidneys, and its discovery was serendipitously made through gene-targeting experiments conducted on mice. Klotho has a favorable role in the regulation of multiple cellular processes, such as aging, oxidative stress, inflammation, and apoptosis. This regulation occurs through the targeting of diverse signaling molecules, cell membrane receptors, and ion channels, achieved by physical contacts or enzymatic activities of Klotho. This review examines the role of Klotho in the epigenetic regulation of molecules associated with diabetes. Methods Authors conducted a thorough literature search using the PubMed®, Web of Science™, and Scopus®. Relevant articles up to September 2023, published in the English language were considered. We reviewed research databases searching for studies that included keywords klotho, epigenetic, and diabetes. Results 14 related papers about epigenetic modification of proteins involved in diabetes pathogenesis were selected to be included in this narrative review. In the studies, the kidney was the most investigated organ regarding this correlation. Also, phosphorylation and methylation were the common epigenetic modifications of proteins by Klotho. Conclusion Klotho has a significant role in the maturation of adipocytes and the regulation of systemic glucose metabolism, exhibiting a strong association with the pathogenesis of diabetes. Both epigenetic alterations and the modulation of protein phosphorylation by Klotho play significant roles in the regulation of Klotho expression and the modulation of other molecules implicated in the etiology of diabetes.
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Affiliation(s)
| | | | | | - Mehrnoosh Lak
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Fatemeh Mahdi
- Department of Internal Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Brooks ER, Siriruchatanon M, Prabhu V, Charytan DM, Huang WC, Chen Y, Kang SK. Chronic kidney disease and risk of kidney or urothelial malignancy: systematic review and meta-analysis. Nephrol Dial Transplant 2024; 39:1023-1033. [PMID: 38037426 PMCID: PMC11139511 DOI: 10.1093/ndt/gfad249] [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: 08/05/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is highly prevalent, affecting approximately 11% of US adults. Multiple studies have evaluated a potential association between CKD and urinary tract malignancies. Summary estimates of urinary tract malignancy risk in CKD patients with and without common co-existing conditions may guide clinical practice recommendations. METHODS Four electronic databases were searched for original cohort studies evaluating the association between CKD and urinary tract cancers (kidney cancer and urothelial carcinoma) through 25 May 2023, in persons with at least moderate CKD and no dialysis or kidney transplantation. Quality assessment was performed for studies meeting inclusion criteria using the Newcastle-Ottawa Scale. Meta-analysis with a random-effects model was performed for unadjusted incidence rate ratios (IRR) as well as adjusted hazard ratios (aHR) for confounding conditions (diabetes, hypertension and/or tobacco use), shown to have association with kidney cancer and urothelial carcinoma. Sub-analysis was conducted for estimates associated with CKD stages separately. RESULTS Six cohort studies with 8 617 563 persons were included. Overall, the methodological quality of the studies was good. CKD was associated with both higher unadjusted incidence and adjusted hazard of kidney cancer (IRR 3.36, 95% confidence interval (CI) 2.32-4.88; aHR 2.04, 95% CI 1.77-2.36) and urothelial cancer (IRR 3.96, 95% CI 2.44-6.40; aHR 1.35, 95% CI 1.22-1.50) compared with persons without CKD. Examining incident urinary tract cancers by CKD severity, risks were elevated in stage 3 CKD (kidney aHR 1.89, 95% CI 1.56-2.30; urothelial carcinoma aHR 1.35, 95% CI 1.20-1.52) as well as in stages 4/5 CKD (kidney cancer aHR 2.30, 95% CI 2.00-2.66; urothelial carcinoma aHR 1.24, 95% CI 1.04-1.49). CONCLUSIONS Even moderate CKD is associated with elevated risk of kidney cancer and urothelial carcinoma. Providers should consider these elevated risks when managing individuals with CKD, particularly when considering evaluation for the presence and etiology of hematuria.
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Affiliation(s)
- Emily R Brooks
- Department of Radiology, NYU Grossman School of Medicine, New York, NY, USA
| | | | - Vinay Prabhu
- Department of Radiology, NYU Grossman School of Medicine, New York, NY, USA
| | - David M Charytan
- Department of Medicine, Division of Nephrology, NYU Grossman School of Medicine, New York, NY, USA
| | - William C Huang
- Department of Urology, NYU Grossman School of Medicine, New York, NY, USA
| | - Yu Chen
- Department of Population Health, NYU Grossman School of Medicine, New York, NY, USA
| | - Stella K Kang
- Department of Radiology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Population Health, NYU Grossman School of Medicine, New York, NY, USA
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Jayaraj JM, Muthusamy K. Role of deleterious nsSNPs of klotho protein and their drug response: a computational mechanical insights. J Biomol Struct Dyn 2024; 42:2886-2896. [PMID: 37216366 DOI: 10.1080/07391102.2023.2214230] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 04/23/2023] [Indexed: 05/24/2023]
Abstract
Worldwide, the burden of chronic kidney disease (CKD) has increased rapidly and is a lethal disease. The klotho protein plays a vital role in the regulatory mechanism in the progression of CKD. Particularly the decreased expression of klothoand its genetic variations might affect the potency of drugs. This study aims to identify a new drug molecule, which works equipotential in all types of klotholike wild and mutant variants. All non-synonymous SNPs were predicted by several SNP tools. Where, two missense variants were examined as vulnerable, significantly damaging, and also involved in the structural conformational changes of the protein. Based on structure-based screening, E-pharmacophore screening, binding mode analysis, binding free energy analysis, QM/MM, and molecular dynamics analysis a lead compound (Lifechemical_F2493-2038) was identified as an effective agonistic molecule hence the identified Lifechemical_F2493-2038 compound is well bound to the wild and mutant proteins which found to increase the expression of klotho.Communicated by Ramaswamy H. Sarma.
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Yang M, Zhang C. The role of innate immunity in diabetic nephropathy and their therapeutic consequences. J Pharm Anal 2024; 14:39-51. [PMID: 38352948 PMCID: PMC10859537 DOI: 10.1016/j.jpha.2023.09.003] [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] [Received: 02/26/2023] [Revised: 07/12/2023] [Accepted: 09/05/2023] [Indexed: 02/16/2024] Open
Abstract
Diabetic nephropathy (DN) is an enduring condition that leads to inflammation and affects a substantial number of individuals with diabetes worldwide. A gradual reduction in glomerular filtration and emergence of proteins in the urine are typical aspects of DN, ultimately resulting in renal failure. Mounting evidence suggests that immunological and inflammatory factors are crucial for the development of DN. Therefore, the activation of innate immunity by resident renal and immune cells is critical for initiating and perpetuating inflammation. Toll-like receptors (TLRs) are an important group of receptors that identify patterns and activate immune responses and inflammation. Meanwhile, inflammatory responses in the liver, pancreatic islets, and kidneys involve inflammasomes and chemokines that generate pro-inflammatory cytokines. Moreover, the activation of the complement cascade can be triggered by glycated proteins. This review highlights recent findings elucidating how the innate immune system contributes to tissue fibrosis and organ dysfunction, ultimately leading to renal failure. This review also discusses innovative approaches that can be utilized to modulate the innate immune responses in DN for therapeutic purposes.
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Affiliation(s)
- Min Yang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
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Wang Y, Huang X, Xia S, Huang Q, Wang J, Ding M, Mo Y, Yang J. Gender differences and risk factors for acute kidney injury following cardiac surgery: A single center retrospective cohort study. Heliyon 2023; 9:e22177. [PMID: 38046157 PMCID: PMC10686869 DOI: 10.1016/j.heliyon.2023.e22177] [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: 03/10/2023] [Revised: 10/19/2023] [Accepted: 11/06/2023] [Indexed: 12/05/2023] Open
Abstract
Background We studied AKI incidence and prognosis in cardiac surgery patients under and over 60 years old. Methods We studied AKI in patients who underwent cardiac surgery at the First Affiliated Hospital of Wenzhou Medical University between Jan 2020 and Dec 2021, using improved global prognostic criteria for diagnosis. Results After analyzing 781 patients (402 males, 379 females), AKI incidence after surgery was 30.22 %. Adjusting for propensity scores revealed no significant difference in AKI incidence between young males (24.1 %) and females (19.3 %). However, young females had higher AKI stages. Among older patients, AKI incidence was comparable between males (43.4 %) and females (42.2 %), but females had longer intubation times. Independent risk factors for AKI included age, male gender, and BMI, while intraoperative hemoglobin level was protective. Conclusions No gender gap in AKI frequency for <60 years old and ≥60 years old post-cardiac surgery, yet women display increased AKI severity and extended intubation duration.
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Affiliation(s)
- Yichuan Wang
- Department of Anesthesiology, The First Affiliated Hospital of Soochow University, China
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, China
| | - Xuliang Huang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, China
| | - Shanshan Xia
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, China
| | - Qingqing Huang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, China
| | - Jue Wang
- Department of Cardiac Surgery, The First Affiliated Hospital of Wenzhou Medical University, China
| | - Maochao Ding
- Department of Human Anatomy, Wenzhou Medical University, China
| | - Yunchang Mo
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, China
| | - Jianping Yang
- Department of Anesthesiology, The First Affiliated Hospital of Soochow University, China
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Amiresmaili M, Goudarzi R, Agoush L. Informal Caregivers and Care Burden in Iran: Systematic Review and Meta-Analysis. IRANIAN JOURNAL OF NURSING AND MIDWIFERY RESEARCH 2023; 28:649-658. [PMID: 38205404 PMCID: PMC10775867 DOI: 10.4103/ijnmr.ijnmr_343_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 10/17/2021] [Accepted: 05/21/2022] [Indexed: 01/12/2024]
Abstract
Background The increase in the average age of the population, the decrease in the size of the household and rising in the number of working women impose an increasing burden on home caregivers in Iran. The aim of this study was to measure care burden of informal caregivers in Iran through systematic review and meta-analysis of existing literature. Materials and Methods A systematic review was conducted by using national and international databases of Scopus, PubMed, Embase, Web of Science, SID, Magiran, and IranDoc papers in English and Persian language up to the first half of 2020. In this meta-analysis, we calculated the pooled care burden and 95% confidence intervals in Statistical Software For Data Science (STATA) V.15. Results Forty-four papers were included in the current study based on inclusion and exclusion criteria comprising of 8626 samples. Pooled mean of Burden of Care was 52.01 (95% CI: 48.21-55.82). Highest pooled mean(SD) of care burden (64.37) was related to caregivers of schizophrenia patients (95% CI: 56.09-72.64). Highest care burden (53.45) was observed in most deprived areas (95%CI = 47.05-59.86). A statistically significant relationship was observed between caregivers gender and care burden (p < 0.05). Conclusions The reported care burden of informal caregivers requires the establishment of a support system to control mental and physical stress. Due to the dispersion and cultural diversity in Iran, more studies are needed to obtain more accurate data.
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Affiliation(s)
- Mohammadreza Amiresmaili
- Health in Disasters and Emergencies Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Reza Goudarzi
- Modeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Leila Agoush
- Department of Management, Policy and Health Economics, School of Management and Medical Information Sciences, Kerman University of Medical Sciences, Kerman, Iran
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Ali A, Mulatu K, Feleke SF, Wassie GT. Prevalence of chronic kidney disease and associated factors among patients with underlying chronic disease at Dessie Referral Hospital, East Amhara Region, Ethiopia. FRONTIERS IN EPIDEMIOLOGY 2023; 3:1154522. [PMID: 38455919 PMCID: PMC10910998 DOI: 10.3389/fepid.2023.1154522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 06/22/2023] [Indexed: 03/09/2024]
Abstract
Background Chronic kidney disease is defined as a reduction in glomerular filtration rate below 60 ml/min per 1.73 m2 and presence of albuminuria over a period of time. Globally, 10%-15% of populations are affected by chronic kidney disease. Studies conducted in Jimma, Addis Ababa, and the Tigray region were conducted on a single chronic disease and did not include human immune viruses. In addition, there has been no such study conducted in the Amhara region. Therefore, the aim of this study was to determine the magnitude and associated factors of chronic kidney disease among chronic patients who are followed up at an outpatient department. Methods An institutional-based cross-sectional study of 480 chronic patients was conducted at Dessie Referral Hospital, Dessie, Ethiopia between 15 March and 16 April 2020. Data were entered into Epidata and exported to SPSS version 25 for analysis. Binary logistic regression models were performed to identify factors associated with chronic kidney disease. The variables with a p-value ≤0.25 were considered to be a candidate for multivariable logistic regression. A p-value ≤0.05 was considered a statistically significant association. Results The magnitude of chronic kidney disease among the study participants was 21.3%. Variables such as hypertension [adjusted odds ratio (AOR): 2.6, 95% CI: 1.58-4.27], use of non-steroidal anti-inflammatory drugs (AOR: 2.4, 95% CI: 1.41-3.97), smoking (AOR: 4.4, 95% CI: 2.65-7.34), routine physical activity (AOR: 0.6, 95% CI: 0.35-0.94), and obesity (AOR: 3.0, 95% CI: 1.76-5.05) were significantly associated with the chronic kidney disease. Conclusion This study found that the magnitude of chronic kidney disease in the study area was high. Hypertension, use of non-steroidal anti-inflammatory drugs, smoking, routine physical activity, and obesity were found to be significant factors for chronic kidney disease.
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Affiliation(s)
- Ahmed Ali
- Department of Epidemiology and Biostatistics, School of Public Health, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
| | - Kebadnew Mulatu
- Department of Epidemiology and Biostatistics, School of Public Health, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
| | - Sefineh Fenta Feleke
- Department of Public Health, College of Health Sciences, Woldia University, Woldia, Ethiopia
| | - Gizachew Tadesse Wassie
- Department of Epidemiology and Biostatistics, School of Public Health, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
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García-Prieto A, de la Flor JC, Coll E, Iglesias E, Reque J, Valga F. Expanded hemodialysis: what's up, Doc? Clin Kidney J 2023; 16:1071-1080. [PMID: 37398691 PMCID: PMC10310509 DOI: 10.1093/ckj/sfad033] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Indexed: 10/06/2023] Open
Abstract
In recent years there has been an increasing interest in expanded hemodialysis (HDx), an emerging renal replacement therapy based on the use of medium cut-off membranes (MCO). Thanks to the internal architecture of these types of membranes, with a higher pore size and smaller fiber inner diameter to favor internal filtration rate, they can increase the removal of larger middle molecules in conventional hemodialysis. Secondarily, several reports suggest that this therapy potentially improve the outcomes for end-stage renal disease patients. However, HDx has not been defined yet and the characteristics of MCO membranes are not well stablished. The aim of this narrative review is to define HDx and summarize the dialyzers that have been used so far to perform this therapy, collect the evidence available on its efficacy and clinical outcomes compared with other hemodialysis techniques and settle the bases for its optimal prescription.
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Affiliation(s)
- Ana García-Prieto
- Nephrology Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | | | - Elisabet Coll
- Nephrology Department, Fundación Puigvert, Barcelona, Spain
| | - Elena Iglesias
- Nephrology Department, Complejo Hospitalario Universitario de Orense, Ourense, Spain
| | - Javier Reque
- Nephrology Department, Hospital General Universitario de Castellón, Castellón, Spain
| | - Francisco Valga
- Nephrology Department, Hospital Universitario de Gran Canaria Doctor Negrín, Las Palmas de Gran Canaria, Spain
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H Hathaway M, L Patil C, Odhiambo A, Onyango D, Dorevitch S. Prevalence and predictors of chronic kidney disease of undetermined causes (CKDu) in Western Kenya's "sugar belt": a cross-sectional study. BMC Nephrol 2023; 24:157. [PMID: 37280533 DOI: 10.1186/s12882-023-03213-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 05/22/2023] [Indexed: 06/08/2023] Open
Abstract
BACKGROUND Epidemics of chronic kidney disease of undetermined causes (CKDu) among young male agricultural workers have been observed in many tropical regions. Western Kenya has similar climatic and occupational characteristics as many of those areas. The study objectives were to characterize prevalence and predictors of CKDu, such as, HIV, a known cause of CKD, in a sugarcane growing region of Kenya; and to estimate prevalence of CKDu across occupational categories and evaluate if physically demanding work or sugarcane work are associated with reduced eGFR. METHODS The Disadvantaged Populations eGFR Epidemiology Study (DEGREE) protocol was followed in a cross-sectional study conducted in Kisumu County, Western Kenya. Multivariate logistic regression was performed to identify predictors of reduced eGFR. RESULTS Among 782 adults the prevalence of eGFR < 90 was 9.85%. Among the 612 participants without diabetes, hypertension, and heavy proteinuria the prevalence of eGFR < 90 was 8.99% (95%CI 6.8%, 11.5%) and 0.33% (95%CI 0.04%, 1.2%) had eGFR < 60. Among the 508 participants without known risk factors for reduced eGFR (including HIV), the prevalence of eGFR < 90 was 5.12% (95%CI 3.4%, 7.4%); none had eGFR < 60. Significant risk factors for reduced eGFR were sublocation, age, body mass index, and HIV. No association was found between reduced eGFR and work in the sugarcane industry, as a cane cutter, or in physically demanding occupations. CONCLUSION CKDu is not a common public health problem in this population, and possibly this region. We recommend that future studies should consider HIV to be a known cause of reduced eGFR. Factors other than equatorial climate and work in agriculture may be important determinants of CKDu epidemics.
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Affiliation(s)
- Michelle H Hathaway
- Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois Chicago, 1603 W. Taylor St., Chicago, IL, 60612, USA.
| | - Crystal L Patil
- Department of Human Development Nursing Science, College of Nursing, University of Illinois Chicago, 845 S. Damen Ave., MC 802, Chicago, IL, 60612, USA
| | - Aloyce Odhiambo
- Safe Water and AIDS Project, Behind Royal City Garden Hotel, Milimani Estate, Off Aga Khan Road, P.O. Box, Kisumu, 3323-40100, Kenya
| | - Dickens Onyango
- County Department of Health, County Government of Kisumu, Kisumu, Kenya
| | - Samuel Dorevitch
- Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois Chicago, 1603 W. Taylor St., Chicago, IL, 60612, USA
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Zhou Z, Kuang H, Wang F, Liu L, Zhang L, Fu P. High cut-off membranes in patients requiring renal replacement therapy: a systematic review and meta-analysis. Chin Med J (Engl) 2023; 136:34-44. [PMID: 36848147 PMCID: PMC10106154 DOI: 10.1097/cm9.0000000000002150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND Whether high cut-off (HCO) membranes are more effective than high-flux (HF) membranes in patients requiring renal replacement therapy (RRT) remains controversial. The aim of this systematic review was to investigate the efficacy of HCO membranes regarding the clearance of inflammation-related mediators, β2-microglobulin and urea; albumin loss; and all-cause mortality in patients requiring RRT. METHODS We searched all relevant studies on PubMed, Embase, Web of Science, the Cochrane Library, and China National Knowledge Infrastructure, with no language or publication year restrictions. Two reviewers independently selected studies and extracted data using a prespecified extraction instrument. Only randomized controlled trials (RCTs) were included. Summary estimates of standardized mean differences (SMDs) or weighted mean differences (WMDs) and risk ratios (RRs) were obtained by fixed-effects or random-effects models. Sensitivity analyses and subgroup analyses were performed to determine the source of heterogeneity. RESULTS Nineteen RCTs involving 710 participants were included in this systematic review. Compared with HF membranes, HCO membranes were more effective in reducing the plasma level of interleukin-6 (IL-6) (SMD -0.25, 95% confidence interval (CI) -0.48 to -0.01, P = 0.04, I2 = 63.8%); however, no difference was observed in the clearance of tumor necrosis factor-α (TNF-α) (SMD 0.03, 95% CI -0.27 to 0.33, P = 0.84, I2 = 4.3%), IL-10 (SMD 0.22, 95% CI -0.12 to 0.55, P = 0.21, I2 = 0.0%), or urea (WMD -0.27, 95% CI -2.77 to 2.23, P = 0.83, I2 = 19.6%). In addition, a more significant reduction ratio of β 2 -microglobulin (WMD 14.8, 95% CI 3.78 to 25.82, P = 0.01, I2 = 88.3%) and a more obvious loss of albumin (WMD -0.25, 95% CI -0.35 to -0.16, P < 0.01, I2 = 40.8%) could be observed with the treatment of HCO membranes. For all-cause mortality, there was no difference between the two groups (risk ratio [RR] 1.10, 95% CI 0.87 to 1.40, P = 0.43, I2 = 0.0%). CONCLUSIONS Compared with HF membranes, HCO membranes might have additional benefits on the clearance of IL-6 and β 2-microglobulin but not on TNF-α, IL-10, and urea. Albumin loss is more serious with the treatment of HCO membranes. There was no difference in all-cause mortality between HCO and HF membranes. Further larger high-quality RCTs are needed to strengthen the effects of HCO membranes.
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Affiliation(s)
- Zhifeng Zhou
- Division of Nephrology, Kidney Research Institute, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Huang Kuang
- Division of Nephrology, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Beijing 100034, China
| | - Fang Wang
- Division of Nephrology, Kidney Research Institute, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Lu Liu
- Preventive Medicine, West China School of Public Health, Sichuan University, Chengdu, Sichuan 610041, China
| | - Ling Zhang
- Division of Nephrology, Kidney Research Institute, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Ping Fu
- Division of Nephrology, Kidney Research Institute, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
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Effect of anti-resistance exercise intervention on sarcopenia in hemodialysis patients under nanofiber-based composite membrane. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02740-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Body composition is associated with tacrolimus pharmacokinetics in kidney transplant recipients. Eur J Clin Pharmacol 2022; 78:1273-1287. [PMID: 35567629 PMCID: PMC9283366 DOI: 10.1007/s00228-022-03323-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 04/15/2022] [Indexed: 12/03/2022]
Abstract
Purpose A population pharmacokinetic (popPK) model may be used to improve tacrolimus dosing and minimize under- and overexposure in kidney transplant recipients. It is unknown how body composition parameters relate to tacrolimus pharmacokinetics and which parameter correlates best with tacrolimus exposure. The aims of this study were to investigate which body composition parameter has the best association with the pharmacokinetics of tacrolimus and to describe this relationship in a popPK model. Methods Body composition was assessed using bio-impedance spectroscopy (BIS). Pharmacokinetic analysis was performed using nonlinear mixed effects modeling (NONMEM). Lean tissue mass, adipose tissue mass, over-hydration, and phase angle were measured with BIS and then evaluated as covariates. The final popPK model was evaluated using goodness-of-fit plots, visual predictive checks, and a bootstrap analysis. Results In 46 kidney transplant recipients, 284 tacrolimus concentrations were measured. The base model without body composition parameters included age, plasma albumin, plasma creatinine, CYP3A4 and CYP3A5 genotypes, and hematocrit as covariates. After full forward inclusion and backward elimination, only the effect of the phase angle on clearance (dOFV = − 13.406; p < 0.01) was included in the final model. Phase angle was positively correlated with tacrolimus clearance. The inter-individual variability decreased from 41.7% in the base model to 34.2% in the final model. The model was successfully validated. Conclusion The phase angle is the bio-impedance spectroscopic parameter that correlates best with tacrolimus pharmacokinetics. Incorporation of the phase angle in a popPK model can improve the prediction of an individual’s tacrolimus dose requirement after transplantation. Supplementary information The online version contains supplementary material available at 10.1007/s00228-022-03323-0.
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Local Insulin-Derived Amyloidosis Model Confronted with Silymarin: Histological Insights and Gene Expression of MMP, TNF-α, and IL-6. Int J Mol Sci 2022; 23:ijms23094952. [PMID: 35563343 PMCID: PMC9101448 DOI: 10.3390/ijms23094952] [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: 03/08/2022] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 02/06/2023] Open
Abstract
Amyloidosis is a heterogeneous group of protein deposition diseases associated with the presence of amyloid fibrils in tissues. Analogs of insulin that are used for treating diabetic patients (including regular insulin) can form amyloid fibrils, both in vitro and in vivo as reported in patients. The main purpose of this study was the induction of localized insulin-generated amyloidosis and the observation of silymarin effects on this process. In order to obtain amyloid structures, regular insulin was incubated at 37 °C for 24 h. Congo red absorbance and transmission electron microscopy images validated the formation of amyloid fibrils. Those fibrils were then injected subcutaneously into rats once per day for 6, 12 or 18 consecutive days in the presence or absence of silymarin, and caused development of firm waxy masses. These masses were excised and stained with Hematoxylin and Eosin, Congo red and Thioflavin S. Histological examination showed adipose cells and connective tissue in which amyloid deposition was visible. Amyloids decreased in the presence of silymarin, and the same effect was observed when silymarin was added to normal insulin and injected subsequently. Furthermore, plasma concentrations of MMP2, TNF-α, and IL-6 inflammatory factors were measured, and their gene expression was locally assessed in the masses by immunohistochemistry. All three factors increased in the amyloidosis state, while silymarin had an attenuating effect on their plasma levels and gene expression. In conclusion, we believe that silymarin could be effective in counteracting insulin-generated local amyloidosis.
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14
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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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15
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Bahador RS, Farokhzadian J, Mangolian P, Nouhi E. Concerns and Challenges of Living Donors When Making Decisions on Organ Donation: A Qualitative Study. IRANIAN JOURNAL OF NURSING AND MIDWIFERY RESEARCH 2022; 27:149-156. [PMID: 35419258 PMCID: PMC8997179 DOI: 10.4103/ijnmr.ijnmr_158_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 05/24/2021] [Accepted: 11/03/2021] [Indexed: 11/04/2022]
Abstract
Background Mental concerns of living donors can be a solid barrier to logical and informed decision-making for organ donation. The present study explores living donors' mental concerns and problems during the process of decision-making for organ donation. Materials and Methods present study was performed using qualitative content analysis. Twenty-one participants were selected by purposive sampling. The data were collected and recorded through semistructured interviews and analyzed by MAX Qualitative Data Analysis software 12, based on Graneheim and Lundman's contractual content analysis method. Results Data analysis extracted 425 codes, 13 subcategories, 3 main categories, and 1 core theme (conflict between doubt and certainty). The three main categories were individual barriers and concerns (faced by the donor), interpersonal concerns and barriers (experienced by the family), and socio-organizational concerns and barriers (at the community). Conclusions Based on the results, donors have significant concerns and face major problems when deciding on organ donation. Therefore, health-care professionals should take into account organ donors' concerns, raise awareness of donor associations, and formulate policies to increase living donors' satisfaction.
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Affiliation(s)
| | | | - Parvin Mangolian
- Nursing Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Esmat Nouhi
- Nursing Research Center, Kerman University of Medical Sciences, Kerman, Iran,Address for correspondence: Dr. Esmat Nouhi, Nursing Research Center, Kerman University of Medical Sciences, Kerman, Iran. E-mail:
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16
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Motshwari DD, George C, Matshazi DM, Weale CJ, Davids SFG, Zemlin AE, Erasmus RT, Kengne AP, Matsha TE. Expression of whole blood miR-126-3p, -30a-5p, -1299, -182-5p and -30e-3p in chronic kidney disease in a South African community-based sample. Sci Rep 2022; 12:4107. [PMID: 35260775 PMCID: PMC8904505 DOI: 10.1038/s41598-022-08175-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 02/04/2022] [Indexed: 12/30/2022] Open
Abstract
The burden of chronic kidney disease (CKD) in Africa remains poorly characterized, due partly to the lack of appropriate diagnostic strategies. Although in recent years the diagnostic and prognostic utility of microRNAs (miRNAs) have gained prominence in the context of CKD, its value has not been evaluated in African populations. We investigated the expression of whole blood miRNAs (miR-126-3p, -30a-5p, -1299, -182-5p and -30e-3p) in a total sample of 1449 comprising of 13.3% individuals with CKD (stage 1-5) and 26.4% male participants, as well as the association of these miRNAs with prevalent CKD, in a community-based sample of South African adults. We used Reverse Transcription Quantitative Real-Time PCR (RT-qPCR) to analyze miRNA expression. There was an increased expression in whole blood miR-126-3p, -30a-5p, -1299 and -182-5p in individuals with CKD, compared to those without (all p ≤ 0.036), whereas miR-30e-3p showed no significant difference between the groups (p = 0.482). Only miR-126-3p, -182-5p and -30e-3p were independently associated with increased risk of CKD (all p ≤ 0.022). This study showed for the first time that there is a dysregulation of whole blood miR-126-3p, -30a-5p, -1299 and -182-5p in South Africans of mixed-ancestry with CKD. More research is needed to ascertain their role in CKD risk screening in African populations.
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Affiliation(s)
- Dipuo D Motshwari
- SAMRC/CPUT/Cardiometabolic Health Research Unit, Department of Biomedical Sciences, Faculty of Health and Wellness Science, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Cindy George
- Non-Communicable Disease Research Unit, South African Medical Research Council, Parow, Francie van Zijl Drive, Parow Valley, Cape Town, South Africa.
| | - Don M Matshazi
- SAMRC/CPUT/Cardiometabolic Health Research Unit, Department of Biomedical Sciences, Faculty of Health and Wellness Science, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Cecil J Weale
- SAMRC/CPUT/Cardiometabolic Health Research Unit, Department of Biomedical Sciences, Faculty of Health and Wellness Science, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Saarah F G Davids
- SAMRC/CPUT/Cardiometabolic Health Research Unit, Department of Biomedical Sciences, Faculty of Health and Wellness Science, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Annalise E Zemlin
- Division of Chemical Pathology, Faculty of Medicine and Health Sciences, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town, South Africa
| | - Rajiv T Erasmus
- SAMRC/CPUT/Cardiometabolic Health Research Unit, Department of Biomedical Sciences, Faculty of Health and Wellness Science, Cape Peninsula University of Technology, Cape Town, South Africa
- Division of Chemical Pathology, Faculty of Medicine and Health Sciences, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town, South Africa
| | - Andre P Kengne
- Non-Communicable Disease Research Unit, South African Medical Research Council, Parow, Francie van Zijl Drive, Parow Valley, Cape Town, South Africa
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Tandi E Matsha
- SAMRC/CPUT/Cardiometabolic Health Research Unit, Department of Biomedical Sciences, Faculty of Health and Wellness Science, Cape Peninsula University of Technology, Cape Town, South Africa
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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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Alazouny ZM, Alghonamy NM, Mohamed SR, Abdel Aal SM. Mesenchymal stem cells microvesicles versus granulocytes colony stimulating factor efficacy in ameliorating septic induced acute renal cortical injury in adult male albino rats (Histological and Immunohistochemical Study). Ultrastruct Pathol 2022; 46:164-187. [PMID: 35193482 DOI: 10.1080/01913123.2022.2039826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Sepsis is the most common cause of acute kidney injury in ICU patients, with increasing mortalities. Treatment septic AKI is unsatisfactory; therefore, more effective therapies must be investigated. MSCs-MVs have the same effectiveness in tissue repair as their original cells. Granulocyte colony-stimulating factor (G-CSF) is considered a simple and convenient tool in regenerative medicine. This study aimed to compare the probable therapeutic effect of MSCs-MVs versus G-CSF on septic AKI in rats. Forty-eight adult male rats were divided into four groups; I control group (IA-ID), II induced-sepsis group, III G-CSF, and IV MSC-MVs groups. Sepsis was induced in groups II, III, IV through a single IV injection of 10 mg/ kg of E.Coli-LPS dissolved in 1 ml saline. Four hours later, group IV received a single IV injection of MSCs-MVs, while group III received a SC injection of Neupogen for 5 days. All animals were sacrificed 7 days from the start. Serum and tissue samples of each group were used for biochemical study. Sections from all groups were subjected to light and electron microscopic examination. A fluorescent microscope examination for subgroup ID and group IV was done. Morphometric and statistical analyses were performed. Group II showed features of acute tubular injury. Group III showed some improvement (biochemically, LM & EM level) however, group IV showed more improvement. MVs injection caused a marked improvement in septic AKI; G-CSF can also meliorate the degenerative effect of sepsis on renal cortex, but to a lesser extent than MSCs-MVs.
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Affiliation(s)
- Zeinab M Alazouny
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Nabila M Alghonamy
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Samar R Mohamed
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Sara M Abdel Aal
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Gao C, Zhang Q, Yang Y, Li Y, Lin W. Recent trends in therapeutic application of engineered blood purification materials for kidney disease. Biomater Res 2022; 26:5. [PMID: 35120554 PMCID: PMC8815201 DOI: 10.1186/s40824-022-00250-0] [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: 10/23/2021] [Accepted: 01/10/2022] [Indexed: 12/11/2022] Open
Abstract
Blood purification is a commonly used method to remove excess metabolic waste in the blood in renal replacement therapy. The sufficient removal of these toxins from blood can reduce complications and improve survival lifetime in dialysis patients. However, the current biological blood purification materials in clinical practice are not ideal, where there is an unmet need for producing novel materials that have better biocompatibility, reduced toxicity, and, in particular, more efficient toxin clearance rates and a lower cost of production. Given this, this review has carefully summarized newly developed engineered different structural biomedical materials for blood purification in terms of types and structure characteristics of blood purification materials, the production process, as well as interfacial chemical adsorption properties or mechanisms. This study may provide a valuable reference for fabricating a user-friendly purification device that is more suitable for clinical blood purification applications in dialysis patients.
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Affiliation(s)
- Cui Gao
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang, China
| | - Qian Zhang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang, China
| | - Yi Yang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang, China.
- Department of Nephology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang, China.
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang, China.
| | - Yangyang Li
- Key Laboratory of Women's Reproductive Health Research of Zhejiang Province, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang, China.
- Cancer Center, Zhejiang University, Hangzhou, 310058, Zhejiang, China.
| | - Weiqiang Lin
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang, China.
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang, China.
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20
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Ebrahim Z, Glorieux G, Moosa MR, Blaauw R. Effect of simplified dietary advice on nutritional status and uremic toxins in chronic kidney disease participants. SOUTH AFRICAN JOURNAL OF CLINICAL NUTRITION 2022. [DOI: 10.1080/16070658.2021.2018788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Zarina Ebrahim
- Division of Human Nutrition, Stellenbosch University, Cape Town, South Africa
| | - Griet Glorieux
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, Ghent, Belgium
| | - M Rafique Moosa
- Department of Medicine, Stellenbosch University, Cape Town, South Africa
| | - Renée Blaauw
- Division of Human Nutrition, Stellenbosch University, Cape Town, South Africa
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21
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Molano AP, Hutchison CA, Sanchez R, Rivera AS, Buitrago G, Dazzarola MP, Munevar M, Guerrero M, Vesga JI, Sanabria M. Medium Cut-Off Versus High-Flux Hemodialysis Membranes and Clinical Outcomes: A Cohort Study Using Inverse Probability Treatment Weighting. Kidney Med 2022; 4:100431. [PMID: 35492142 PMCID: PMC9044098 DOI: 10.1016/j.xkme.2022.100431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Rationale & Objective This study investigated the effects on patients’ outcomes of using medium cutoff (MCO) versus high-flux (HF) dialysis membranes. Study Design A retrospective, observational, multicenter, cohort study. Setting & Participants Patients aged greater than 18 years receiving hemodialysis at the Baxter Renal Care Services dialysis network in Colombia. The inception of the cohort occurred from September 1, 2017, to November 30, 2017, with follow-up to November 30, 2019. Exposure The patients were divided into 2 cohorts according to the dialyzer used at the inception: (1) MCO membrane or (2) HF membrane. Outcomes Primary outcomes were the hospitalization rate from any cause and hospitalization days per patient-year. Secondary outcomes were acute cardiovascular events and mortality rates from any cause and secondary to cardiovascular causes. Laboratory parameters were assessed throughout the 2-year follow-up period. Analytical Approach Descriptive statistics were used to report population characteristics. Inverse probability of treatment weighting was applied to each group before analysis. All categorical variables were compared using Pearson’s χ2 test, and continuous variables were analyzed with the t test. Baseline differences between groups with a value of >10% were considered clinically meaningful. Laboratory variables were measured at 5 consecutive time points. A between-patient effect was analyzed using a split-plot factorial analysis of variance. Results The analysis included 1,098 patients, of whom 564 (51.3%) were dialyzed with MCO membranes and 534 (48.7%) with HF membranes. Patients receiving hemodialysis with MCO membranes had a lower all-cause hospitalization incidence rate (IR) per patient-year (IR = 0.93; 95% CI, 0.82-1.03) than those receiving hemodialysis with HF membranes (IR = 1.13; 95% CI, 0.96-1.30), corresponding to a significant incident rate ratio (MCO/HF) of 0.82 (95% CI, 0.68-0.99; P = 0.04). The frequency of nonfatal cardiovascular events showed statistical significance, with a lower incidence in the MCO group (incident rate ratio = 0.66; 95% CI, 0.46-0.96; P = 0.03). No statistically significant differences in all-cause time until death were observed (P = 0.48). Albumin levels were similar between the 2 dialyzer cohorts. Limitations Despite the robust statistical analysis, there remains the possibility that unmeasured variables may still generate residual imbalance and, therefore, skew the results. Conclusions The incidences of hospitalization and cardiovascular events in patients receiving hemodialysis were lower when dialyzed with MCO membranes than HF membranes. A randomized controlled trial would be desirable to confirm these results. Trial Registration Clinical Trials.gov, ISRCTN12403265.
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Affiliation(s)
| | - Colin A. Hutchison
- Department of Medicine, Hawke’s Bay District Health Board, Hastings, New Zealand
| | - Ricardo Sanchez
- Clinical Research Institute, School of Medicine, National University of Colombia, Bogotá, DC, Colombia
| | | | - Giancarlo Buitrago
- Clinical Research Institute, School of Medicine, National University of Colombia, Bogotá, DC, Colombia
| | - María P. Dazzarola
- Baxter Renal Care Services–Servicios de Terapia Renal del Valle, Cali, Colombia
| | - Mario Munevar
- Baxter Renal Care Services–Sucursal Barranquilla, Barranquilla, Colombia
| | - Mauricio Guerrero
- Baxter Renal Care Services–Sucursal Barranquilla, Barranquilla, Colombia
| | | | - Mauricio Sanabria
- Baxter Renal Care Services–Latin America, Bogotá, DC, Colombia
- Address for Correspondence: Mauricio Sanabria, MSc, Baxter Renal Care Services–Latin America, Transversal 23 # 97-73, 6th Floor, Bogotá 110221002, Colombia.
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22
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Stati G, Rossi F, Trakoolwilaiwan T, Tung LD, Mourdikoudis S, Thanh NTK, Di Pietro R. Development and Characterization of Curcumin-Silver Nanoparticles as a Promising Formulation to Test on Human Pterygium-Derived Keratinocytes. Molecules 2022; 27:282. [PMID: 35011514 PMCID: PMC8746426 DOI: 10.3390/molecules27010282] [Citation(s) in RCA: 8] [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: 11/30/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 02/05/2023] Open
Abstract
Pterygium is a progressive disease of the human eye arising from sub-conjunctival tissue and extending onto the cornea. Due to its invasive growth, pterygium can reach the pupil compromising visual function. Currently available medical treatments have limited success in suppressing efficiently the disease. Previous studies have demonstrated that curcumin, polyphenol isolated from the rhizome of Curcuma longa, induces apoptosis of human pterygium fibroblasts in a dose- and time-dependent manner showing promising activity in the treatment of this ophthalmic disease. However, this molecule is not very soluble in water in either neutral or acidic pH and is only slightly more soluble in alkaline conditions, while its dissolving in organic solvents drastically reduces its potential use for biomedical applications. A nanoformulation of curcumin stabilized silver nanoparticles (Cur-AgNPs) seems an effective strategy to increase the bioavailability of curcumin without inducing toxic effects. In fact, silver nitrates have been used safely for the treatment of many ophthalmic conditions and diseases for a long time and the concentration of AgNPs in this formulation is quite low. The synthesis of this new compound was achieved through a modified Bettini's method adapted to improve the quality of the product intended for human use. Indeed, the pH of the reaction was changed to 9, the temperature of the reaction was increased from 90 °C to 100 °C and after the synthesis the Cur-AgNPs were dispersed in Borax buffer using a dialysis step to improve the biocompatibility of the formulation. This new compound will be able to deliver both components (curcumin and silver) at the same time to the affected tissue, representing an alternative and a more sophisticated strategy for the treatment of human pterygium. Further in vitro and in vivo assays will be required to validate this formulation.
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Affiliation(s)
- Gianmarco Stati
- Department of Medicine and Ageing Sciences, G. d’Annunzio University of Chieti-Pescara, Via dei Vestini, 31, 66100 Chieti, Italy
| | - Francesco Rossi
- UCL Healthcare Biomagnetic & Nanomaterials Laboratories, The Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, UK; (F.R.); (T.T.); (L.D.T.); (S.M.)
- Biophysics Group, Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University, Via Torino, 155/b, 30170 Venice, Italy
| | - Thithawat Trakoolwilaiwan
- UCL Healthcare Biomagnetic & Nanomaterials Laboratories, The Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, UK; (F.R.); (T.T.); (L.D.T.); (S.M.)
- Biophysics Group, Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
- Healthy Infrastructure Research Group, University College London, Gower Street, London WC1E 6BT, UK
| | - Le Duc Tung
- UCL Healthcare Biomagnetic & Nanomaterials Laboratories, The Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, UK; (F.R.); (T.T.); (L.D.T.); (S.M.)
- Biophysics Group, Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
| | - Stefanos Mourdikoudis
- UCL Healthcare Biomagnetic & Nanomaterials Laboratories, The Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, UK; (F.R.); (T.T.); (L.D.T.); (S.M.)
- Biophysics Group, Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic
| | - Nguyễn Thi Kim Thanh
- UCL Healthcare Biomagnetic & Nanomaterials Laboratories, The Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, UK; (F.R.); (T.T.); (L.D.T.); (S.M.)
- Biophysics Group, Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
| | - Roberta Di Pietro
- Department of Medicine and Ageing Sciences, G. d’Annunzio University of Chieti-Pescara, Via dei Vestini, 31, 66100 Chieti, Italy
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de Oliveira Neto L, Tavares VDDO, Agrícola PMD, de Oliveira LP, Sales MC, de Sena-Evangelista KCM, Gomes IC, Galvão-Coelho NL, Pedrosa LFC, Lima KC. Factors associated with inflamm-aging in institutionalized older people. Sci Rep 2021; 11:18333. [PMID: 34526542 PMCID: PMC8443661 DOI: 10.1038/s41598-021-97225-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/13/2021] [Indexed: 02/08/2023] Open
Abstract
The increase in inflammatory cytokines associated with a reduction in the bioavailability of zinc has been used as a marker for inflammation. Despite the high inflammatory state found in institutionalized older individuals, few studies have proposed verifying the factors associated with this condition in this population. To verify the factors associated with inflamm-aging in institutionalized older people. A total of 178 older people (≥ 60 years old) living in nursing homes in Natal/RN were included in the study. Cluster analysis was used to identify three groups according to their inflammatory state. Analysis anthropometric, biochemical, sociodemographic, and health-related variables was carried out. In sequence, an ordinal logistic regression was performed for a confidence level of 95% in those variables with p < 0.20 in the bivariate analysis. IL-6, TNF-α, zinc, low-density lipids (LDL), high-density lipids (HDL), and triglycerides were associated with inflamm-aging. The increase of 1 unit of measurement of LDL, HDL, and triglycerides increased the chance of inflammation-aging by 1.5%, 4.1%, and 0.9%, respectively, while the oldest old (≥ 80 years old) had an 84.9% chance of presenting inflamm-aging in relation to non-long-lived older people (< 80 years). The association between biochemical markers and inflamm-aging demonstrates a relationship between endothelial injury and the inflammatory state. In addition, the presence of a greater amount of fat in the blood may present a higher relative risk of death.
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Affiliation(s)
- Leônidas de Oliveira Neto
- Department of Arts, Postgraduate Program in Rehabilitation Sciences, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 3000-Lagoa Nova, Natal, RN, 59078-970, Brazil.
| | | | | | | | - Márcia Cristina Sales
- Graduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | | | - Igor Conterato Gomes
- Department of Epidemiology, School of Public Health, University of São Paulo, Brazil, São Paulo, SP, Brazil
| | | | | | - Kenio Costa Lima
- Graduate Program in Collective Health, Federal University of Rio Grande do Norte, Natal, RN, Brazil
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Reis T, Anwar S, Neves FDADR, Ronco C. Disruptive technologies for hemodialysis: medium and high cutoff membranes. Is the future now? ACTA ACUST UNITED AC 2021; 43:410-416. [PMID: 33836041 PMCID: PMC8428648 DOI: 10.1590/21758239-jbn-2020-0273] [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: 12/18/2020] [Accepted: 01/04/2021] [Indexed: 01/19/2023]
Abstract
In the past decade, a new class of hemodialysis (HD) membranes (high retention
onset class) became available for clinical use. The high cutoff (HCO) and the
medium cutoff (MCO) membranes have wider pores and more uniformity in pore size,
allowing an increased clearance of uremic toxins. Owing to the mechanism of
backfiltration/internal filtration, middle molecules are dragged by the
convective forces, and no substitution solution is needed. The HCO dialyzer is
applied in septic patients with acute kidney injury requiring continuous kidney
replacement therapy. The immune response is modulated thanks to the removal of
inflammatory mediators. Another current application for the HCO dialyzer is in
hematology, for patients on HD secondary to myeloma-kidney, since free light
chains are more efficiently removed with the HCO membrane, reducing their
deleterious effect on the renal tubules. In its turn, the MCO dialyzer is used
for maintenance HD patients. A myriad of clinical trials published in the last
three years consistently demonstrates the ability of this membrane to remove
uremic toxins more efficiently than the high-flux membrane, an evolutionary
disruption in the HD standard of care. Safety concerns regarding albumin loss as
well as blood contamination from pyrogens in the dialysate have been overcome.
In this update article, we explore the rise of new dialysis membranes in the
light of the scientific evidence that supports their use in clinical
practice.
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Affiliation(s)
- Thiago Reis
- Universidade de Brasília, Faculdade de Ciências da Saúde, Laboratório de Farmacologia Molecular, Brasília, DF, Brasil.,San Bortolo Hospital, International Renal Research Institute of Vicenza, Department of Nephrology, Dialysis and Transplantation, Vicenza, Italy.,Clínica de Doenças Renais de Brasília, Departamento de Nefrologia, Brasília, DF, Brasil.,Academia Nacional de Medicina, Programa Jovens Lideranças Médicas, Rio de Janeiro, RJ, Brasil
| | - Siddiq Anwar
- Abu Dhabi Health Services (SEHA) Company, Department of Nephrology, Abu Dhabi, United Arab Emirates
| | | | - Claudio Ronco
- San Bortolo Hospital, International Renal Research Institute of Vicenza, Department of Nephrology, Dialysis and Transplantation, Vicenza, Italy.,University of Padova, Department of Medicine, Padova, Italy
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Louise Benelli J, Basso RP, Rodrigues MDL, Poester VR, Munhoz LS, Aquino VR, Stevens DA, Xavier MO. Coinfection of disseminated cryptococcosis and BK Virus, a casualty of missed diagnosis during the COVID-19 Pandemic: A case report and review of the literature. Curr Med Mycol 2021; 7:44-49. [PMID: 35528625 PMCID: PMC9006733 DOI: 10.18502/cmm.7.2.7802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/14/2021] [Accepted: 10/17/2021] [Indexed: 11/16/2022] Open
Abstract
Background and Purpose The COVID-19 pandemic resulted in an overload of health services and healthcare professionals. The result is a setback in health promotion and prevention, delays in diagnosis, and deaths from other diseases that are currently receiving inadequate attention. This article illustrates the risk of this negligence. Case report This study aimed to report a case of coinfection of disseminated cryptococcosis and BK virus in a patient without a previous diagnosis of human immunodeficiency virus infection and COVID-19 negative in the context of the COVID-19 pandemic. Despite receiving antifungal therapy, the patient died. Conclusion This fatal case is a warning regarding delay of diagnosis and neglect of other serious illnesses owing to the current pandemic, including fungal diseases and neglected diagnoses.
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Affiliation(s)
- Jéssica Louise Benelli
- Laboratory of Mycology, Faculty of Medicine, Federal University of Rio Grande, Rio Grande (FURG), Brazil,
Postgraduate Program in Health Science, Federal University of Rio Grande (PPGCS-FURG), Rio Grande, Brazil,
Clinical Analysis Laboratory, Dr. Miguel Riet Correa University Hospital, Rio Grande (HU-FURG/EBSERH), Brazil
| | - Rossana Patrícia Basso
- Postgraduate Program in Health Science, Federal University of Rio Grande (PPGCS-FURG), Rio Grande, Brazil,
Specialized Care Service in Infectious Diseases, Dr. Miguel Riet Correa University Hospital, Rio Grande, Brazil
| | - Márcia de Lima Rodrigues
- Specialized Care Service in Infectious Diseases, Dr. Miguel Riet Correa University Hospital, Rio Grande, Brazil
| | - Vanice Rodrigues Poester
- Laboratory of Mycology, Faculty of Medicine, Federal University of Rio Grande, Rio Grande (FURG), Brazil,
Postgraduate Program in Health Science, Federal University of Rio Grande (PPGCS-FURG), Rio Grande, Brazil
| | - Lívia Silveira Munhoz
- Postgraduate Program in Health Science, Federal University of Rio Grande (PPGCS-FURG), Rio Grande, Brazil
| | - Valerio Rodrigues Aquino
- Laboratory Diagnostic Service, Microbiology Unit, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil
| | - David A. Stevens
- California Institute for Medical Research, San Jose, and Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Melissa Orzechowski Xavier
- Laboratory of Mycology, Faculty of Medicine, Federal University of Rio Grande, Rio Grande (FURG), Brazil,
Postgraduate Program in Health Science, Federal University of Rio Grande (PPGCS-FURG), Rio Grande, Brazil
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IgA Vasculitis: a Review and Update on the Management of Renal and Extrarenal Disease, Highlighting What’s New for Biomarkers and Treatment. CURRENT PEDIATRICS REPORTS 2021. [DOI: 10.1007/s40124-021-00247-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abebe A, Kebede B, Wobie Y. Clinical Profile and Short-Term Outcomes of Acute Kidney Injury in Patients Admitted to a Teaching Hospital in Ethiopia: A Prospective Study. Int J Nephrol Renovasc Dis 2021; 14:201-209. [PMID: 34239318 PMCID: PMC8259934 DOI: 10.2147/ijnrd.s318037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 06/22/2021] [Indexed: 11/23/2022] Open
Abstract
Background Acute kidney injury (AKI) is a common complication in hospitalized patients and a marker for poor patient outcomes. It is associated with a high risk of mortality and other short- and long-term adverse outcomes. We aim to assess the clinical profile and short-term outcomes of acute kidney injury in adult patients admitted to the medical ward. Methods A hospital-based prospective observational study was conducted from October 2019 to January 2020. All adult patients diagnosed as AKI using kidney disease improving global outcomes (KIDGO) criteria were included in the study and prospectively followed to document the short-term outcomes. Outcomes and their predictors were determined using multivariate logistic regression. P-value less than 0.05 was taken as statistically significant. Results A total of 160 patients were included in the study. Out of this, 96 (60%) were males, 118 (74%) had community-acquired AKI, and 51 (32%) had stage 3 AKI. Common causes of AKI were hypovolemia 62 (39%) and sepsis 35 (22%). Hypertension 69 (43%) and heart failure 50 (31%) were common underlying comorbidities. Fifty-six (35%) patients developed systemic complications, 98 (61.2%) had persistent AKI, 136 (85%) had prolonged length of hospital stay, and 18 (11%) were readmitted to the hospital. The presence of AKI-related complication (AOR=2.7, 95% CI: 1.14–6.58, p=0.024), and duration of AKI (AOR=9.7, 95% CI: 2.56–36.98, p=0.001) were factors associated with prolonged length of hospital stay. Preexisting CKD (AOR=3.6, 95% CI: 1.02–13.14, p=0.035) and stage 3 AKI (AOR=2.1, 95% CI: 1.6–3.57, p=0.04) were factors associated with 30-day hospital readmission. Conclusion Hypovolemia and infections were the primary causes of AKI. Complications, prolonged length of hospital stay, persistent AKI, and rehospitalization were poor short-term outcomes of AKI. Early diagnosis and timely management of AKI particularly in high-risk hospitalized patients, and post-AKI care including management of comorbidities for AKI survivors should improve these poor short-term outcomes.
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Affiliation(s)
- Abinet Abebe
- Clinical Pharmacy, School of Pharmacy, College of Health and Medical Sciences, Mizan Tepi University, Mizan, Ethiopia
| | - Bezie Kebede
- Clinical Pharmacy, School of Pharmacy, College of Health and Medical Sciences, Mizan Tepi University, Mizan, Ethiopia
| | - Yohannes Wobie
- Clinical Pharmacy, School of Pharmacy, College of Health and Medical Sciences, Mizan Tepi University, Mizan, Ethiopia
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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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29
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Jung CY, Heo GY, Park JT, Joo YS, Kim HW, Lim H, Chang TI, Kang EW, Yoo TH, Kang SW, Lee J, Kim SW, Oh YK, Jung JY, Oh KH, Ahn C, Han SH. Sex disparities and adverse cardiovascular and kidney outcomes in patients with chronic kidney disease: results from the KNOW-CKD. Clin Res Cardiol 2021; 110:1116-1127. [PMID: 34003323 DOI: 10.1007/s00392-021-01872-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/07/2021] [Indexed: 12/18/2022]
Abstract
AIMS Longitudinal studies of the association between sex and adverse clinical outcomes in patients with chronic kidney disease (CKD) are scarce. We assessed whether major outcomes may differ by sex among CKD patients. METHODS We analyzed a total of 1780 participants with non-dialysis CKD G1-5 from the KoreaN cohort study for Outcome in patients with Chronic Kidney Disease (KNOW-CKD). The primary outcome was a composite of non-fatal cardiovascular events or all-cause mortality. Secondary outcomes included fatal and non-fatal cardiovascular events, all-cause mortality, and a composite kidney outcome of ≥ 50% decline in estimated glomerular filtration rate from baseline or the onset of end-stage kidney disease. RESULTS There were 1088 (61%) men and 692 (39%) women in the study cohort. The proportion of smokers was significantly higher in men (24% vs. 3%). During 8430 person-years of follow-up, 201 primary outcome events occurred: 144 (13%) in men and 57 (8%) in women, with corresponding incidence rates of 2.9 and 1.7 per 100 person-years, respectively. In multivariable Cox models, men were associated with a 1.58-fold (95% CI 1.06-2.35) higher risk of composite outcome. Propensity score matching analysis revealed similar findings (HR 1.81; 95% CI 1.14-2.91). Risk of all-cause mortality was significantly higher in men of the matched cohort. However, there was no difference in the risk of CKD progression. In the subgroup with coronary artery calcium (CAC) measurements, men had a higher likelihood of CAC progression. CONCLUSIONS In Korean CKD patients, men were more likely to experience adverse cardiovascular events and death than women.
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Affiliation(s)
- Chan-Young Jung
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Republic of Korea
| | - Ga Young Heo
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Republic of Korea
| | - Jung Tak Park
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Republic of Korea
| | - Young Su Joo
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Republic of Korea
| | - Hyung Woo Kim
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Republic of Korea
| | - Hyunsun Lim
- Research and Analysis Team, National Health Insurance Service Ilsan Hospital, Goyangshi, Gyeonggi-do, Republic of Korea
| | - Tae Ik Chang
- Department of Internal Medicine, National Health Insurance Service Medical Center, Ilsan Hospital, Goyangshi, Gyeonggi-do, Republic of Korea
| | - Ea Wha Kang
- Department of Internal Medicine, National Health Insurance Service Medical Center, Ilsan Hospital, Goyangshi, Gyeonggi-do, Republic of Korea
| | - Tae-Hyun Yoo
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Republic of Korea
| | - Shin-Wook Kang
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Republic of Korea
| | - Joongyub Lee
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Soo Wan Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Yun Kyu Oh
- Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Ji Yong Jung
- Division of Nephrology, Department of Internal Medicine, Gachon University of Gil Medical Center, Incheon, Republic of Korea
| | - Kook-Hwan Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Curie Ahn
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seung Hyeok Han
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Republic of Korea.
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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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31
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Heparin immobilized graphene oxide in polyetherimide membranes for hemodialysis with enhanced hemocompatibility and removal of uremic toxins. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119068] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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32
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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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Ghosh A, Vallam Thodi F, Sengupta S, Kannan S, Krishnan L, Bhattacharya E. Effective clearance of uremic toxins using functionalised silicon Nanoporous membranes. Biomed Microdevices 2021; 23:4. [PMID: 33415531 DOI: 10.1007/s10544-020-00539-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2020] [Indexed: 12/24/2022]
Abstract
In-house fabricated silicon nanoporous membranes (SNMs), functionalized for efficient clearance of uremic toxins, can lead to compact and portable dialysis systems. Efficacy of 15 nm thick SNMs, with average pore diameter of 8 nm, was tested for dialysis of two uremic toxins - urea and creatinine using custom made teflon apparatus of 2, 10 and 30 ml. The apparatus consisted of two reservoirs, with the cis containing the uremic fluid, and the trans containing the dialysate. Peristalsis was found to enhance the clearance rate by a factor of four as compared to unstirred condition. Functionalisation of the SNMs reduced protein binding, and surface binding of urea from 23% to negligible values. A lateral array of nine SNMs and a new design for the dialysis apparatus, increased the clearance rate by a factor of twelve from that of the single SNM. The arrays cleared about 42% of urea and 48% of creatinine from 30 ml of diluted serum samples, in 15 min. Periodic replacement of the trans fluid cleared about 81% of high concentration uremic toxins from the cis reservoir in 45 mins. The SNM arrays are stable, reproducible, and with the superior clearance rates for urea and creatinine, they have the potential to be used as membranes for portable hemodialysers.
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Affiliation(s)
- Ananya Ghosh
- Department of Electrical Engineering, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Fidal Vallam Thodi
- Centre for NEMS and Nanophotonics, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Sudeshna Sengupta
- Centre for NEMS and Nanophotonics, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Sivasundari Kannan
- Department of Electrical Engineering, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Lalitha Krishnan
- Centre for NEMS and Nanophotonics, Indian Institute of Technology-Madras, Chennai, 600036, India
| | - Enakshi Bhattacharya
- Department of Electrical Engineering, Indian Institute of Technology-Madras, Chennai, 600036, India. .,Centre for NEMS and Nanophotonics, Indian Institute of Technology-Madras, Chennai, 600036, India.
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Putz FJ, Jung EM, Putz C, Banas MC, Bergler T, Vienken J, Banas B. Contrast-Enhanced Ultrasonography as a Novel Method for the Dynamic Visualization of Blood Flow and Fiber Blockage in Dialyzers: A Feasibility Study. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:2265-2275. [PMID: 32553530 DOI: 10.1016/j.ultrasmedbio.2020.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/07/2020] [Accepted: 05/05/2020] [Indexed: 06/11/2023]
Abstract
The capillary dialyzer represents the central element of the extracorporeal blood circuit of a therapy system for hemodialysis. The aim of this study was to assess the blood-flow characteristics of dialyzers with the help of modern ultrasound techniques. Five brand-new dialyzers (FX80 classix, Fresenius Medical Care, Bad Homburg, Germany) and five dialyzers after a dialysis session were analyzed by different ultrasound techniques to detect functional and structural changes. B-mode and Doppler techniques were not suitable to describe differences in brand-new and clinically applied dialyzers. Contrast-enhanced ultrasonography, however, was able to visualize blood-flow profiles in the capillaries. Although dialyzers displayed no signs of clinical dysfunction, contrast-enhanced ultrasonography was able to detect blocked capillaries of varying degrees after a dialysis session in all five examined dialyzers. Consequently, the blood-flow velocity was higher in the remaining unblocked capillaries in comparison to the velocity in the brand-new dialyzers. This information may be helpful for improving the geometric design of dialyzers, including their capillary membranes, and optimizing anti-coagulation strategies in hemodialysis patients.
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Affiliation(s)
- Franz Josef Putz
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany.
| | - Ernst Michael Jung
- Interdisciplinary Ultrasound Department, University Hospital Regensburg, Regensburg, Germany
| | - Christina Putz
- Department of Cardio-thoracic Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Miriam C Banas
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - Tobias Bergler
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
| | | | - Bernhard Banas
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
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35
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Bunch A, Sanchez R, Nilsson LG, Bernardo AA, Vesga JI, Ardila F, Guerrero IM, Sanabria RM, Rivera AS. Medium cut-off dialyzers in a large population of hemodialysis patients in Colombia: COREXH registry. Ther Apher Dial 2020; 25:33-43. [PMID: 32352233 PMCID: PMC7818220 DOI: 10.1111/1744-9987.13506] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 12/31/2022]
Abstract
Expanded hemodialysis (HDx) provides increased clearance of conventional and large middle molecules through innovative medium cutoff (MCO) membranes. However, there is a paucity of real-world data regarding the benefits and safety of HDx. This large observational study evaluated outcomes among patients in Colombia undergoing HDx at a extended dialysis clinical services provider. This was a prospective single cohort study of prevalent patients who were treated with HDx; baseline information was collected from the most recent data before patients were started on HDx. Patients were followed prospectively for 1 year for changes in serum albumin and other laboratory parameters compared with the baseline. Survival, hospitalization and safety were assessed from the start of HDx. A total of 1000 patients were invited to enroll; 992 patients met the inclusion criteria for data analysis and 638 patients completed the year of follow-up. Seventy-four (8%) patients died during 866 patient-years (PY) of follow-up; the mortality rate was 8.54 deaths/100 PY (95% confidence interval [CI], 6.8-10.7). There were 673 hospitalization events with a rate of 0.79 events/PY (95% CI, 0.73-0.85) with 6.91 hospital days/PY (95% CI, 6.74-7.09). The observed variability from baseline and maximum average change in mean serum albumin levels were -1.8% and -3.5%, respectively. No adverse events were related to the MCO membrane. HDx using an MCO membrane maintains stable serum albumin levels and is safe in terms of nonoccurrence of dialyzer related adverse events.
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Affiliation(s)
- Alfonso Bunch
- Medical Department, Renal Therapy Services-Latin America, Bogotá, DC, Colombia
| | - Ricardo Sanchez
- Epidemiology Department, Universidad Nacional de Colombia, Bogotá, DC, Colombia
| | - Lars-Göran Nilsson
- Medical Affairs, Baxter Healthcare Corporation, Deerfield, Illinois, USA
| | | | - Jasmin I Vesga
- Medical Department, Renal Therapy Services-Colombia, Bogotá, DC, Colombia
| | - Fredy Ardila
- Medical Department, Renal Therapy Services-Colombia, Bogotá, DC, Colombia
| | - Ivan M Guerrero
- Nephrology Department, Renal Therapy Services-Barranquilla, Barranquilla, Colombia
| | - Rafael M Sanabria
- Medical Department, Renal Therapy Services-Latin America, Bogotá, DC, Colombia
| | - Angela S Rivera
- Medical Affairs, Baxter Healthcare Corporation, Deerfield, Illinois, USA
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Yamamoto R, Imai E, Maruyama S, Yokoyama H, Sugiyama H, Nitta K, Tsukamoto T, Uchida S, Takeda A, Sato T, Wada T, Hayashi H, Akai Y, Fukunaga M, Tsuruya K, Masutani K, Konta T, Shoji T, Hiramatsu T, Goto S, Tamai H, Nishio S, Shirasaki A, Nagai K, Yamagata K, Hasegawa H, Yasuda H, Ichida S, Naruse T, Nishino T, Sobajima H, Tanaka S, Akahori T, Ito T, Terada Y, Katafuchi R, Fujimoto S, Okada H, Ishimura E, Kazama JJ, Hiromura K, Mimura T, Suzuki S, Saka Y, Sofue T, Suzuki Y, Shibagaki Y, Kitagawa K, Morozumi K, Fujita Y, Mizutani M, Shigematsu T, Kashihara N, Sato H, Matsuo S, Narita I, Isaka Y. Incidence of remission and relapse of proteinuria, end-stage kidney disease, mortality, and major outcomes in primary nephrotic syndrome: the Japan Nephrotic Syndrome Cohort Study (JNSCS). Clin Exp Nephrol 2020; 24:526-540. [PMID: 32146646 PMCID: PMC7248042 DOI: 10.1007/s10157-020-01864-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 02/18/2020] [Indexed: 12/12/2022]
Abstract
Background Despite recent advances in immunosuppressive therapy for patients with primary nephrotic syndrome, its effectiveness and safety have not been fully studied in recent nationwide real-world clinical data in Japan. Methods A 5-year cohort study, the Japan Nephrotic Syndrome Cohort Study, enrolled 374 patients with primary nephrotic syndrome in 55 hospitals in Japan, including 155, 148, 38, and 33 patients with minimal change disease (MCD), membranous nephropathy (MN), focal segmental glomerulosclerosis (FSGS), and other glomerulonephritides, respectively. The incidence rates of remission and relapse of proteinuria, 50% and 100% increases in serum creatinine, end-stage kidney disease (ESKD), all-cause mortality, and other major adverse outcomes were compared among glomerulonephritides using the Log-rank test. Incidence of hospitalization for infection, the most common cause of mortality, was compared using a multivariable-adjusted Cox proportional hazard model. Results Immunosuppressive therapy was administered in 339 (90.6%) patients. The cumulative probabilities of complete remission within 3 years of the baseline visit was ≥ 0.75 in patients with MCD, MN, and FSGS (0.95, 0.77, and 0.79, respectively). Diabetes was the most common adverse events associated with immunosuppressive therapy (incidence rate, 71.0 per 1000 person-years). All-cause mortality (15.6 per 1000 person-years), mainly infection-related mortality (47.8%), was more common than ESKD (8.9 per 1000 person-years), especially in patients with MCD and MN. MCD was significantly associated with hospitalization for infection than MN. Conclusions Patients with MCD and MN had a higher mortality, especially infection-related mortality, than ESKD. Nephrologists should pay more attention to infections in patients with primary nephrotic syndrome. Electronic supplementary material The online version of this article (10.1007/s10157-020-01864-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ryohei Yamamoto
- Health and Counseling Center, Osaka University, 1-17 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan. .,Department of Nephrology, Osaka University Graduate School of Medicine, 2-2-D11 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Enyu Imai
- Nakayamadera Imai Clinic, 2-8-18 Nakayamadera, Takarazuka, Hyogo, 665-0861, Japan
| | - Shoichi Maruyama
- Department of Nephrology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Hitoshi Yokoyama
- Department of Nephrology, Kanazawa Medical Univeristy School of Medicine, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Hitoshi Sugiyama
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikatacho, Kita-ku, Okayama, Okayama, 700-8558, Japan
| | - Kosaku Nitta
- Department of Nephrology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Tatsuo Tsukamoto
- Department of Nephrology and Dialysis, Kitano Hospital, Tazuke Kofukai Medical Research Institute, 2-4-20 Ogimachi, Kita-ku, Osaka, Osaka, 530-8480, Japan
| | - Shunya Uchida
- Department of Internal Medicine, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8606, Japan
| | - Asami Takeda
- Kidney Disease Center, Japanese Red Cross Nagoya Daini Hospital, 2-9 Myokencho, Showa-ku, Nagoya, Aichi, 466-8650, Japan
| | - Toshinobu Sato
- Department of Nephrology, JCHO Sendai Hospital, 3-16-1 Tsutsumi-machi, Aoba-ku, Sendai, Miyagi, 981-8501, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hiroki Hayashi
- Department of Nephrology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, 470-1192, Japan
| | - Yasuhiro Akai
- First Department of Internal Medicine, Nara Medical University, 840 Shijocho, Kashihara, Nara, 634-8522, Japan
| | - Megumu Fukunaga
- Division of Nephrology, Department of Internal Medicine, Toyonaka Municipal Hospital, 4-14-1 Shibaharacho, Toyonaka, Osaka, 560-8565, Japan
| | - Kazuhiko Tsuruya
- Department of Integrated Therapy for Chronic Kidney Disease, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, 812-8582, Japan
| | - Kosuke Masutani
- Division of Nephrology and Rheumatology, Department of Internal Medicine, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
| | - Tsuneo Konta
- Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, 2-2 Iida-Nishi, Yamagata-shi, Yamagata, Yamagata, 990-9585, Japan
| | - Tatsuya Shoji
- Department of Kidney Disease and Hypertension, Osaka General Medical Center, 3-1-56 Bandaihigashi, Sumiyoshi-ku, Osaka, Osaka, 558-8558, Japan
| | - Takeyuki Hiramatsu
- Department of Nephrology, Konan Kosei Hospital, 137 Omatsubara, Takayacho, Konan, Aichi, 483-8704, Japan
| | - Shunsuke Goto
- Division of Nephrology and Kidney Center, Kobe University Graduate School of Medicine, 7-5-1 Kusunokicho, Cuho-ku, Kobe, Hyogo, 650-0017, Japan
| | - Hirofumi Tamai
- Department of Nephrology, Anjo Kosei Hospital, 28 Higashihirokute, Anjocho, Anjo, Aichi, 446-8602, Japan
| | - Saori Nishio
- Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita-ku, Sapporo, Hokkaido, 060-8638, Japan
| | - Arimasa Shirasaki
- Department of Nephrology, Ichinomiya Municipal Hospital, 2-2-22 Bunkyo, Ichinomiya, Aichi, 491-8558, Japan
| | - Kojiro Nagai
- Department of Nephrology, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15, Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Kunihiro Yamagata
- Department of Nephrology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Hajime Hasegawa
- Department of Nephrology and Hypertension, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-850, Japan
| | - Hideo Yasuda
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Shizunori Ichida
- Department of Nephrology, Japanese Red Cross Nagoya Daiichi Hospital, 3-35 Michishitacho, Nakamura-ku, Nagoya, Aichi, 453-8511, Japan
| | - Tomohiko Naruse
- Department of Nephrology, Kasugai Municipal Hospital, 1-1-1 Takakicho, Kasugai, Aichi, 486-8510, Japan
| | - Tomoya Nishino
- Department of Nephrology, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Nagasaki, 852-8501, Japan
| | - Hiroshi Sobajima
- Department of Diabetology and Nephrology, Ogaki Municipal Hospital, 4-86 Minaminokawacho, Ogaki, Gifu, 503-8502, Japan
| | - Satoshi Tanaka
- Department of Nephrology, Shizuoka General Hospital, 4-27-1 Kitaando, Aoi-ku, Shizuoka, Shizuoak, 420-8527, Japan
| | - Toshiyuki Akahori
- Department of Nephrology, Chutoen General Medical Center, 1-1 Shobugaike, Kakegawa, Shizuoka, 436-8555, Japan
| | - Takafumi Ito
- Division of Nephrology, Shimane University Hospital, 89-1 Enyacho, Izumo, Shimane, 693-8501, Japan
| | - Yoshio Terada
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Okocho Kohasu, Nankoku, Kochi, 783-8505, Japan
| | - Ritsuko Katafuchi
- Kideny Unit, National Hospital Organization Fukuokahigashi Medical Center, 1-1-1 Chidori, Koga, Fukuoka, 811-3195, Japan
| | - Shouichi Fujimoto
- Department of Hemovascular Medicine and Artificial Organs, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotakecho, Miyazaki, Miyazaki, 889-1692, Japan
| | - Hirokazu Okada
- Department of Nephrology, Saitama Medical University, 38 Morohongo, Moroyama, Iruma, Saitama, 350-0495, Japan
| | - Eiji Ishimura
- Department of Nephrology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Junichiro J Kazama
- Department of Nephrology and Hypertension, Fukushima Medical University School of Medicine, 1 Hikariga-oka, Fukushima-City, Fukushima, 960-1295, Japan
| | - Keiju Hiromura
- Department of Nephrology and Rheumatology, Gunma University Graduate School of Medicine, 3-39-22 Showa-matchi, Maebashi, Gunma, 371-8511, Japan
| | - Tetsushi Mimura
- Department of Nephrology, Gifu Prefectural Tajimi Hospital, 5-161 Maebatacho, Tajimi, Gifu, 507-8522, Japan
| | - Satoshi Suzuki
- Department of Nephrology, Kainan Hospital, 396 Minamihonden, Maegasucho, Yatomi, Aichi, 498-8502, Japan
| | - Yosuke Saka
- Department of Nephrology, Yokkaichi Municipal Hospital, 2-2-37 Shibata, Yokkaichi, Mie, 510-8567, Japan
| | - Tadashi Sofue
- Department of Cardiorenal and Cerebrovascular Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Yusuke Suzuki
- Division of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Yugo Shibagaki
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-000, Japan
| | - Kiyoki Kitagawa
- Division of Internal Medicine, National Hospital Organization Kanazawa Medical Center, 1-1 Shimoishibikimachi, Kanazawa, Ishikawa, 920-8650, Japan
| | - Kunio Morozumi
- Department of Nephrology, Masuko Memorial Hospital, 35-28 Takegashicho, Nakamura-ku, Nagoya, Aichi, 453-0016, Japan
| | - Yoshiro Fujita
- Department of Nephrology, Chubu Rosai Hospital, 1-10-6 Komei, Minato-ku, Nagoya, Aichi, 455-8530, Japan
| | - Makoto Mizutani
- Department of Nephrology, Handa City Hospital, 2-29 Toyocho, Handa, Aichi, 475-8599, Japan
| | - Takashi Shigematsu
- Department of Nephrology, Wakayama Medical University, 811-1 Kimiidera, Wakayama-City, Wakayama, 641-8509, Japan
| | - Naoki Kashihara
- Department of Nephrology and Hypertension, Kawasaki Medical School, 577 Matsushima, Kurashiki, Osakayama, 701-0192, Japan
| | - Hiroshi Sato
- Department of Nephrology, Endocrinology, and Vascular Medicine, Tohoku Univeristy Gradaute School of Medicine, 1-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Seiichi Matsuo
- Department of Nephrology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Ichiei Narita
- Division of Clinical Nephrology and Rheumatology, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachi-dori, Chuo Ward, Niigata, Niigata, 951-8510, Japan
| | - Yoshitaka Isaka
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2-D11 Yamadaoka, Suita, Osaka, 565-0871, Japan
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Buckberry C, Hoenich N, Krieter D, Lemke HD, Rüth M, Milad JE. Enhancement of solute clearance using pulsatile push-pull dialysate flow for the Quanta SC+: A novel clinic-to-home haemodialysis system. PLoS One 2020; 15:e0229233. [PMID: 32119698 PMCID: PMC7051047 DOI: 10.1371/journal.pone.0229233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 02/01/2020] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND AND OBJECTIVE The SC+ haemodialysis system developed by Quanta Dialysis Technologies is a small, easy-to-use dialysis system designed to improve patient access to self-care and home haemodialysis. A prototype variant of the standard SC+ device with a modified fluidic management system generating a pulsatile push-pull dialysate flow through the dialyser during use has been developed for evaluation. It was hypothesized that, as a consequence of the pulsatile push-pull flow through the dialyser, the boundary layers at the membrane surface would be disrupted, thereby enhancing solute transport across the membrane, modifying protein fouling and maintaining the surface area available for mass and fluid transport throughout the whole treatment, leading to solute transport (clearance) enhancement compared to normal haemodialysis (HD) operation. METHODS The pumping action of the SC+ system was modified by altering the sequence and timings of the valves and pumps associated with the flow balancing chambers that push and pull dialysis fluid to and from the dialyser. Using this unique prototype device, solute clearance performance was assessed across a range of molecular weights in two related series of laboratory bench studies. The first measured dialysis fluid moving across the dialyser membrane using ultrasonic flowmeters to establish the validity of the approach; solute clearance was subsequently measured using fluorescently tagged dextran molecules as surrogates for uraemic toxins. The second study used human blood doped with uraemic toxins collected from the spent dialysate of dialysis patients to quantify solute transport. In both, the performance of the SC+ prototype was assessed alongside reference devices operating in HD and pre-dilution haemodiafiltration (HDF) modes. RESULTS Initial testing with fluorescein-tagged dextran molecules (0.3 kDa, 4 kDa, 10 kDa and 20 kDa) established the validity of the experimental pulsatile push-pull operation in the SC+ system to enhance clearance and demonstrated a 10 to 15% improvement above the current HD mode used in clinic today. The magnitude of the observed enhancement compared favourably with that achieved using pre-dilution HDF with a substitution fluid flow rate of 60 mL/min (equivalent to a substitution volume of 14.4 L in a 4-hour session) with the same dialyser and marker molecules. Additional testing using human blood indicated a comparable performance to pre-dilution HDF; however, in contrast with HDF, which demonstrated a gradual decrease in solute removal, the clearance values using the pulsatile push-pull method on the SC+ system were maintained over the entire duration of treatment. Overall albumin losses were not different. CONCLUSIONS Results obtained using an experimental pulsatile push-pull dialysis flow configuration with an aqueous blood analogue and human blood ex vivo demonstrate an enhancement of solute transport across the dialyser membrane. The level of enhancement makes this approach comparable with that achieved using pre-dilution HDF with a substitution fluid flow rate of 60 mL/min (equivalent to a substitution volume of 14.4 L in a 4-hour session). The observed enhancement of solute transport is attributed to the disruption of the boundary layers at the fluid-membrane interface which, when used with blood, minimizes protein fouling and maintains the surface area.
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Affiliation(s)
- Clive Buckberry
- Quanta Dialysis Technologies Ltd, Alcester, Warwickshire, United Kingdom
- * E-mail:
| | | | | | | | - Marieke Rüth
- EXcorLab GmbH, Industrie Center Obernburg, Obernburg, Germany
| | - John E. Milad
- Quanta Dialysis Technologies Ltd, Alcester, Warwickshire, United Kingdom
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Dejvorakul S, Kumar R, Srirojanakul S, Panupichit N, Somrongthong R. Factors predicted with quality of life among hemodialysis patients in private hospital of Thailand. Hosp Pract (1995) 2019; 47:254-258. [PMID: 31661995 DOI: 10.1080/21548331.2019.1682879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Background: The quality of life (QOL) among the end-stage renal disease patients is an essential component for assessing the success of treatment. This study aimed to determine the factors predicted with quality of life among hemodialysis patients in private hospital of Thailand.Method: This cross-sectional study was conducted by interviewing 188 Thai patients with end-stage renal disease (ESRD), who were on hemodialysis (HD) at Sanamchan Hospital Bangkok. Patients with stable hemodynamic status without any history of mental illness were included in this study. However, those who could not properly communicate were excluded. The descriptive statistics and the multiple linear regression were applied to identify the predictive factors of quality of life (QOL) scores in the end-stage renal disease (ESRD) patients on maintenance hemodialysis (HD). The QoL was assessed in three components including kidney disease component score (KDCS) physical component score (PCS) and mental component score (MCS).Findings: More than half of the participants (57%) in this research were male and (44%) were unemployed. The mean average systolic value of the participants was 157 (25.12 SD) mmHg and the diastolic blood pressure was 81 (5.85 SD) mmHg. Average hematocrit (Hct) was 30.95 (4.38 SD), Kt/v was 1.86 (0.96 SD), and average normalized protein catabolic rate (nPCR) was 1.12 (1.09 SD). The age, income, patients with more than three associated diseases, enough expenses for living, frequency of dialysis per week, and duration of treatment was statistically significant with the kidney disease component score (KDCS) (F = 6.28, p < 0.05). Furthermore, the age, income, patients with more than three associated diseases, hematocrit (Hct) and frequency of dialysis per week were the statistically significant with the physical component score (PCS) (F = 4.99, p < 0.05) while patients with more than three associated diseases and enough expenses for living were the statistically significant with the mental component score (MCS) (F = 3.30, p ≤ 0.05).Conclusion: Study concluded that the factors like; age, expenses for living, frequency of dialysis, patients with more than three associated diseases were had a positive impact on the quality of life among the end-stage renal disease patients coming for dialysis in private hospital of Thailand.
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Affiliation(s)
| | - Ramesh Kumar
- College of Public Health Sciences, Chulalongkorn University, Thailand.,Health Services Academy, Islamabad, Pakistan
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Storr M, Ward RA. Membrane innovation: closer to native kidneys. Nephrol Dial Transplant 2019; 33:iii22-iii27. [PMID: 30281130 PMCID: PMC6168921 DOI: 10.1093/ndt/gfy228] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 06/19/2018] [Indexed: 12/11/2022] Open
Abstract
Modern methods in analytical biochemistry have established that uraemia is associated with the retention of proteins, both in their native state and post-translationally modified, over a wide range of molecular weights up to 60 kDa. Evidence is accumulating that these higher molecular weight retention solutes are important uraemic toxins, and therapies such as online haemodiafiltration (HDF), which enhance their removal, are associated with improved outcomes. However, HDF has limitations regarding cost, clinical implementation and the need for an external source of sterile substitution solution to maintain fluid balance. New membranes that have a solute removal profile more closely approaching that of the glomerular filtration barrier when used for conventional haemodialysis, while at the same time not allowing the passage of clinically significant amounts of beneficial proteins, are needed to address these limitations. Tighter control of the molecular characteristics of the polymers used for membrane fabrication, along with the introduction of additives and improvements in the manufacturing process, has led to membranes with a tighter pore size distribution that allows the use of an increased absolute pore size without leaking substantial amounts of albumin. At the same time, the wall thickness and internal diameter of membrane fibres have been decreased, enhancing convective transport within the dialyser without the need for an external source of substitution solution. These new expanded range membranes provide a solute removal profile more like that of the native kidney than currently available membranes when used in conventional haemodialysis.
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Affiliation(s)
- Markus Storr
- Baxter International, Research and Development, Hechingen, Germany
- Correspondence and offprint requests to: Markus Storr; E-mail:
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40
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Ashby D, Borman N, Burton J, Corbett R, Davenport A, Farrington K, Flowers K, Fotheringham J, Andrea Fox RN, Franklin G, Gardiner C, Martin Gerrish RN, Greenwood S, Hothi D, Khares A, Koufaki P, Levy J, Lindley E, Macdonald J, Mafrici B, Mooney A, Tattersall J, Tyerman K, Villar E, Wilkie M. Renal Association Clinical Practice Guideline on Haemodialysis. BMC Nephrol 2019; 20:379. [PMID: 31623578 PMCID: PMC6798406 DOI: 10.1186/s12882-019-1527-3] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 08/21/2019] [Indexed: 12/15/2022] Open
Abstract
This guideline is written primarily for doctors and nurses working in dialysis units and related areas of medicine in the UK, and is an update of a previous version written in 2009. It aims to provide guidance on how to look after patients and how to run dialysis units, and provides standards which units should in general aim to achieve. We would not advise patients to interpret the guideline as a rulebook, but perhaps to answer the question: "what does good quality haemodialysis look like?"The guideline is split into sections: each begins with a few statements which are graded by strength (1 is a firm recommendation, 2 is more like a sensible suggestion), and the type of research available to back up the statement, ranging from A (good quality trials so we are pretty sure this is right) to D (more like the opinion of experts than known for sure). After the statements there is a short summary explaining why we think this, often including a discussion of some of the most helpful research. There is then a list of the most important medical articles so that you can read further if you want to - most of this is freely available online, at least in summary form.A few notes on the individual sections: 1. This section is about how much dialysis a patient should have. The effectiveness of dialysis varies between patients because of differences in body size and age etc., so different people need different amounts, and this section gives guidance on what defines "enough" dialysis and how to make sure each person is getting that. Quite a bit of this section is very technical, for example, the term "eKt/V" is often used: this is a calculation based on blood tests before and after dialysis, which measures the effectiveness of a single dialysis session in a particular patient. 2. This section deals with "non-standard" dialysis, which basically means anything other than 3 times per week. For example, a few people need 4 or more sessions per week to keep healthy, and some people are fine with only 2 sessions per week - this is usually people who are older, or those who have only just started dialysis. Special considerations for children and pregnant patients are also covered here. 3. This section deals with membranes (the type of "filter" used in the dialysis machine) and "HDF" (haemodiafiltration) which is a more complex kind of dialysis which some doctors think is better. Studies are still being done, but at the moment we think it's as good as but not better than regular dialysis. 4. This section deals with fluid removal during dialysis sessions: how to remove enough fluid without causing cramps and low blood pressure. Amongst other recommendations we advise close collaboration with patients over this. 5. This section deals with dialysate, which is the fluid used to "pull" toxins out of the blood (it is sometimes called the "bath"). The level of things like potassium in the dialysate is important, otherwise too much or too little may be removed. There is a section on dialysate buffer (bicarbonate) and also a section on phosphate, which occasionally needs to be added into the dialysate. 6. This section is about anticoagulation (blood thinning) which is needed to stop the circuit from clotting, but sometimes causes side effects. 7. This section is about certain safety aspects of dialysis, not seeking to replace well-established local protocols, but focussing on just a few where we thought some national-level guidance would be useful. 8. This section draws together a few aspects of dialysis which don't easily fit elsewhere, and which impact on how dialysis feels to patients, rather than the medical outcome, though of course these are linked. This is where home haemodialysis and exercise are covered. There is an appendix at the end which covers a few aspects in more detail, especially the mathematical ideas. Several aspects of dialysis are not included in this guideline since they are covered elsewhere, often because they are aspects which affect non-dialysis patients too. This includes: anaemia, calcium and bone health, high blood pressure, nutrition, infection control, vascular access, transplant planning, and when dialysis should be started.
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Affiliation(s)
- Damien Ashby
- Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, England.
| | - Natalie Borman
- Wessex Kidney Centre, Portsmouth NHS Trust, Portsmouth, England
| | - James Burton
- University Hospitals of Leicester NHS Trust, Leicester, England
| | - Richard Corbett
- Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, England
| | | | - Ken Farrington
- Lister Hospital, East & North Hertfordshire NHS Trust, Stevenage, England
| | - Katey Flowers
- Wessex Kidney Centre, Portsmouth NHS Trust, Portsmouth, England
| | | | - R N Andrea Fox
- School of Nursing and Midwifery, University of Sheffield, Sheffield, England
| | - Gail Franklin
- East & North Hertfordshire NHS Trust, Stevenage, England
| | | | | | - Sharlene Greenwood
- Renal and Exercise Rehabilitation, King's College Hospital, London, England
| | | | - Abdul Khares
- Haemodialysis Patient, c/o The Renal Association, Bristol, UK
| | - Pelagia Koufaki
- School of Health Sciences, Queen Margaret University, Edinburgh, Scotland
| | - Jeremy Levy
- Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, England
| | - Elizabeth Lindley
- Department of Renal Medicine, Leeds Teaching Hospitals NHS Trust, Leeds, England
| | - Jamie Macdonald
- School of Sport, Health and Exercise Sciences, Bangor University, Bangor, UK
| | - Bruno Mafrici
- Nottingham University Hospitals NHS Trust, Nottingham, UK
| | | | | | - Kay Tyerman
- Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Enric Villar
- Lister Hospital, East & North Hertfordshire NHS Trust, Stevenage, England
| | - Martin Wilkie
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, England
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Hulko M, Dietrich V, Koch I, Gekeler A, Gebert M, Beck W, Krause B. Pyrogen retention: Comparison of the novel medium cut-off (MCO) membrane with other dialyser membranes. Sci Rep 2019; 9:6791. [PMID: 31043670 PMCID: PMC6494805 DOI: 10.1038/s41598-019-43161-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/03/2019] [Indexed: 11/09/2022] Open
Abstract
Haemodialysis effectively removes small solutes and smaller-sized middle molecules from the blood; however, the clearance of larger middle molecules, which have been associated with negative effects, is poor. The novel medium cut-off (MCO) dialysis membrane has larger pore sizes and a more open structure than other high-flux membranes, providing improved removal of larger middle molecules while retaining albumin. However, larger pore sizes may potentially increase permeability to pyrogens, including endotoxins and other bacterial contaminants, that could be present in the dialysis fluid. In this study, we tested the capacity of low-flux, high-flux, MCO and high cut-off dialyser membranes with different pore sizes to prevent pyrogens crossing from dialysate to the blood side in a closed-loop test system, differentiating among lipopolysaccharides, peptidoglycans and bacterial DNA using a toll-like receptor assay. Even though the bacterial contamination levels in our test system exceeded the acceptable pyrogen dose for standard dialysis fluid, levels of lipopolysaccharides, peptidoglycans and bacterial DNA in the blood-side samples were too low to identify potential differences in pyrogen permeability among the membranes. Our results suggest that MCO membranes are suitable for haemodialysis using ISO standard dialysis fluid quality, and retain endotoxins at a similar level as other membranes.
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Affiliation(s)
- Michael Hulko
- Baxter International Inc., Research & Development, Holger-Crafoord-Str. 26, 72379, Hechingen, Germany.
| | - Verena Dietrich
- Baxter International Inc., Research & Development, Holger-Crafoord-Str. 26, 72379, Hechingen, Germany
| | - Ilona Koch
- Baxter International Inc., Research & Development, Holger-Crafoord-Str. 26, 72379, Hechingen, Germany
| | - Alexander Gekeler
- Baxter International Inc., Research & Development, Holger-Crafoord-Str. 26, 72379, Hechingen, Germany
| | - Michael Gebert
- Baxter International Inc., Research & Development, Holger-Crafoord-Str. 26, 72379, Hechingen, Germany
| | - Werner Beck
- Baxter International Inc., Research & Development, Holger-Crafoord-Str. 26, 72379, Hechingen, Germany
| | - Bernd Krause
- Baxter International Inc., Research & Development, Holger-Crafoord-Str. 26, 72379, Hechingen, Germany
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42
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Geremia I, Bansal R, Stamatialis D. In vitro assessment of mixed matrix hemodialysis membrane for achieving endotoxin-free dialysate combined with high removal of uremic toxins from human plasma. Acta Biomater 2019; 90:100-111. [PMID: 30953798 DOI: 10.1016/j.actbio.2019.04.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 03/29/2019] [Accepted: 04/02/2019] [Indexed: 01/18/2023]
Abstract
For a single hemodialysis session nearly 500 L of water are consumed for obtaining pyrogen-free dialysis fluid. However, many efforts are required to avoid biofilm formation in the system and risk of contamination can persist. Water scarcity and inadequate water purification facilities worsen contamination risk in developing countries. Here, we investigated the application of an activated carbon (AC)/polyethersulfone/polyvinylpyrrolidone mixed matrix membrane (MMM) for achieving for the first time endotoxin-free dialysate and high removal of uremic toxins from human plasma with a single membrane. The MMM, thanks to sorbent AC, can remove approximately 10 times more endotoxins from dialysis fluid compared to commercial fibers. Pyrogens transport through the MMM was investigated analyzing inflammation in THP-1 monocytes incubated with samples from the dialysis circuit, revealing safety-barrier properties of the MMM. Importantly, endotoxins from dialysate and protein-bound toxins from human plasma can be removed simultaneously without compromising AC adsorption capacity. We estimated that only 0.15 m2 of MMM is needed to totally remove the daily production of the protein-bound toxins indoxyl sulfate and hippuric acid and to completely remove endotoxins in a wearable artificial kidney (WAK) device. Our results could open up new possibilities for dialysis therapy with low water consumption including WAK and where purity and scarcity of water are limiting factors for hemodialysis treatment. STATEMENT OF SIGNIFICANCE: Hemodialysis is a life-sustaining extracorporeal treatment for renal disease, however the production of pyrogen-free dialysate is very costly and water demanding. Biofilm formation in the system worsens bacteria contamination risk. Pyrogens could be transferred into the patients' blood and trigger inflammation. Here, we show for the first time that a mixed matrix membrane composed of polyethersulfone/polyvinylpyrrolidone and activated carbon can achieve simultaneous complete removal of endotoxins from dialysate and high removal of uremic toxins from human plasma without compromising activated carbon adsorption capacity. The mixed matrix membrane could find future applications for simultaneous blood purification and dialysate depyrogenation thus lowering water consumption as for wearable artificial kidney devices and where purity and scarcity of water hamper hemodialysis treatment.
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