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Kojima D, Washida N, Uchiyama K, Hama EY, Nagasaka T, Kusahana E, Nakayama T, Nagashima K, Sato Y, Morimoto K, Kanda T, Itoh H. The body mass index change is associated with death or hemodialysis transfer in Japanese patients initiating peritoneal dialysis. Ren Fail 2023; 45:2163904. [PMID: 36637000 PMCID: PMC9848317 DOI: 10.1080/0886022x.2022.2163904] [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] [Indexed: 01/14/2023] Open
Abstract
A decreased body mass index (BMI) over time is associated with a poor prognosis for patients on hemodialysis. We aimed to examine whether this association also applies to patients with peritoneal dialysis (PD). BMI change was defined as the percentage change in the BMI between the time of PD catheter insertion and six months after its insertion. The association between the BMI change and all-cause mortality or PD discontinuation from six months after PD catheter insertion until October 2021 was investigated. This retrospective cohort study included 122 patients (aged 61.1 ± 12.1 years; 90 males) who underwent PD catheter insertion between January 2008 and March 2020. The median follow-up period was 43.1 (21.2-78.8) months. The median six-month percentage change in the BMI was -2.14 (-5.56-1.84)%, and patients were categorized into tertiles based on their BMI changes. The fully-adjusted Cox regression analysis revealed a significantly higher rate of PD discontinuation or all-cause mortality (hazard ratio (HR): 2.48; 95%; confidence interval (CI): 1.41-4.37) in patients with the lowest tertile (T1, BMI change: < -4.13%) compared to patients with the middle tertile (T2, BMI change: -4.13%-0.67%). The risk was not significantly higher in patients with the highest tertile (T3, BMI change: >0.67%) than those in the T2 group (HR: 1.18; 95% CI: 0.66-2.11). A decreased BMI over time is independently associated with HD transfer or all-cause mortality among patients initiating PD, which highlights the importance of the 6-month BMI change as a novel prognostic marker.
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Affiliation(s)
- Daiki Kojima
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Washida
- Department of Nephrology, International University of Health and Welfare Narita Hospital, Narita, Japan
| | - Kiyotaka Uchiyama
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan,CONTACT Kiyotaka Uchiyama Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Eriko Yoshida Hama
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Tomoki Nagasaka
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Ei Kusahana
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Takashin Nakayama
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Kengo Nagashima
- Biostatistics Unit, Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
| | - Yasunori Sato
- Biostatistics Unit, Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
| | - Kohkichi Morimoto
- Apheresis and Dialysis Center, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Takeshi Kanda
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Hiroshi Itoh
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
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Koźma-Śmiechowicz MA, Gajewski B, Fortak P, Gajewska K, Nowicki M. Physical Activity, Body Composition, Serum Myokines and the Risk of Death in Hemodialysis Patients. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:2020. [PMID: 38004069 PMCID: PMC10673408 DOI: 10.3390/medicina59112020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/10/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023]
Abstract
Background and Objectives: The aim of this study was to assess the relationship between habitual physical activity, body composition, serum myokine concentration, and all-cause mortality in chronic hemodialysis patients. Materials and Methods: A prospective cohort study with a 7-year follow-up was conducted in a group of 38 patients (24 men, 14 women, mean age 65.6 ± 13.9 years, dialysis vintage 1.17 ± 1.25 years). Baseline serum concentrations of myokines-follistatin and myostatin-were assessed along with a measurement of physical activity with multidimensional accelerometery, body composition, and the force of forearm muscle contraction. Survival analysis was performed using the Kaplan-Meier method for tertiles of follistatin, serum myostatin, body composition, and physical activity expressed in metabolic equivalents (MET). Results: The mean physical activity among patients was 81 min/24 h (median 38.5 min), and the mean weekly 3MET activity was 493 min (median 218 min). The probability of survival of patients was significantly lower in the subgroup with 3MET/24 h less than 26 min/24 h and 3METt less than 148 min per week compared to the other subgroup (p = 0.006 and p = 0.006, respectively). During the 70-month follow-up, the subgroup with the lowest baseline follistatin concentration showed a significantly lower risk of death (p = 0.02). Baseline myostatin levels were not significant risk factors for mortality, nor were BMI or lean and fat tissue index categories. Conclusions: Physical activity and low plasma follistatin, but not body composition indexes or plasma myostatin, could serve as predictors of all-cause mortality in hemodialysis patients.
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Affiliation(s)
- Martyna A. Koźma-Śmiechowicz
- Department of Nephrology, Hypertension and Kidney Transplantation, Central University Hospital of the Medical University of Lodz, 90-222 Lodz, Poland
| | | | | | | | - Michał Nowicki
- Department of Nephrology, Hypertension and Kidney Transplantation, Central University Hospital of the Medical University of Lodz, 90-222 Lodz, Poland
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Peçanha A, Nerbass FB, Sesso RC, Lugon JR. Obesity and survival in a national cohort of incident hemodialysis patients: An analysis of the Brazilian Dialysis Registry. Hemodial Int 2023; 27:428-435. [PMID: 37264563 DOI: 10.1111/hdi.13099] [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: 02/25/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023]
Abstract
INTRODUCTION A phenomenon called the "obesity paradox" has consistently been reported in several cohorts of patients on chronic hemodialysis. In this setting, a higher body mass index (BMI) is paradoxically associated with better survival. This study aimed to evaluate the effect of BMI on mortality in patients undergoing chronic hemodialysis using the Brazilian Dialysis Registry. METHODS This was a retrospective national cohort study with data on incident hemodialysis patients collected between January 2011 to December 2018. Those aged <18 or > 80 years were excluded from the study. The variables studied were the clinical and laboratory data regularly collected at the dialysis units. The variable of primary interest was BMI, represented as the median of the entire dialysis treatment and stratified into four ranges according to the World Health Organization (WHO) classification. The primary outcome was death within 4 years. Cox proportional hazards regression analysis was used to test associations with mortality. FINDINGS The analyzed sample consisted of 5489 patients from 73 centers in five regions of the country. Of these, 5.9% were underweight, 48.3% were of normal weight, 31.0% were overweight, and 14.7% were obese. The 4-year survival rates in these BMI ranges were 58%, 70%, 75%, and 80%, respectively. The probability of survival for each BMI extract was significantly different from that in the normal-weight range (p < 0.05). In the fully adjusted Cox proportional hazard regression model, BMI > 24.9 kg/m2 remained an independent protective factor for mortality (HR: 0.76, 95% CI: 0.62-0.95, p = 0.016). DISCUSSION In Brazil, being overweight and obese are protective factors for survival in the chronic hemodialysis population.
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Affiliation(s)
- Angélica Peçanha
- Postgraduation Program in Medical Sciences, Medical School, Universidade Federal Fluminense, Rio de Janeiro, Brazil
| | - Fabiana B Nerbass
- Nephrology Division, Pro-rim Foundation, Joinville, Santa Catarina, Brazil
| | - Ricardo C Sesso
- Nephrology Division, Department of Medicine, Medical School, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Jocemir R Lugon
- Nephrology Division, Department of Medicine, Medical School, Universidade Federal Fluminense, Rio de Janeiro, Brazil
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Echefu G, Stowe I, Burka S, Basu-Ray I, Kumbala D. Pathophysiological concepts and screening of cardiovascular disease in dialysis patients. FRONTIERS IN NEPHROLOGY 2023; 3:1198560. [PMID: 37840653 PMCID: PMC10570458 DOI: 10.3389/fneph.2023.1198560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 08/10/2023] [Indexed: 10/17/2023]
Abstract
Dialysis patients experience 10-20 times higher cardiovascular mortality than the general population. The high burden of both conventional and nontraditional risk factors attributable to loss of renal function can explain higher rates of cardiovascular disease (CVD) morbidity and death among dialysis patients. As renal function declines, uremic toxins accumulate in the blood and disrupt cell function, causing cardiovascular damage. Hemodialysis patients have many cardiovascular complications, including sudden cardiac death. Peritoneal dialysis puts dialysis patients with end-stage renal disease at increased risk of CVD complications and emergency hospitalization. The current standard of care in this population is based on observational data, which has a high potential for bias due to the paucity of dedicated randomized clinical trials. Furthermore, guidelines lack specific guidelines for these patients, often inferring them from non-dialysis patient trials. A crucial step in the prevention and treatment of CVD would be to gain better knowledge of the influence of these predisposing risk factors. This review highlights the current evidence regarding the influence of advanced chronic disease on the cardiovascular system in patients undergoing renal dialysis.
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Affiliation(s)
- Gift Echefu
- Division of Cardiovascular Medicine, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Ifeoluwa Stowe
- Department of Internal Medicine, Baton Rouge General Medical Center, Baton Rouge, LA, United States
| | - Semenawit Burka
- Department of Internal Medicine, University of Texas Rio Grande Valley, McAllen, TX, United States
| | - Indranill Basu-Ray
- Department of Cardiology, Memphis Veterans Affairs (VA) Medical Center, Memphis, TN, United States
| | - Damodar Kumbala
- Nephrology Division, Renal Associates of Baton Rouge, Baton Rouge, LA, United States
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The Effect of Sumac Fruit on Serum Lipids and Body Mass Index in Hemodialysis Patients. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:1687740. [PMID: 36337586 PMCID: PMC9633190 DOI: 10.1155/2022/1687740] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 09/04/2022] [Accepted: 10/21/2022] [Indexed: 11/11/2022]
Abstract
Background Sumac fruit is an antioxidant and reduces serum triglyceride (TG) and cholesterol (CHOL) levels. Therefore, this study aimed to investigate the effect of sumac fruit on serum lipids and body mass index (BMI) of hemodialysis (HD) patients. Materials and Methods This triple-blind randomized clinical trial study was conducted for 12 weeks on HD patients. Participants were randomly divided into three groups of 2-gram sumac (N = 40), 3-gram sumac (N = 40), and placebo (N = 40) by nonprobability consecutive sampling and stratified block randomization method based on inclusion criteria. Serum lipids and BMI were measured at the beginning of the study and also at the end of the sixth and the twelfth weeks. The physical activity and 24-hour dietary recall questionnaires were used to collect data. Results No significant difference was found between the level of nutrient and micronutrient intake (P > 0.05), physical activity (P=0.159), and BMI (P=0.718) of patients in the three groups before and after the intervention. However, the difference in serum low-density lipoprotein (LDL) levels in each studied group was significant over time (P < 0.001). The difference was not statistically significant between the groups before the intervention, 6 and 12 weeks after the intervention (group effect), and between the study groups over time (time-group interaction). No statistically significant difference was observed between the mean levels of TG (P=0.875), CHOL level (P=0.969), LDL level (P=0.998), high-density lipoprotein (HDL) level (P=0.136), and BMI (P=0.608) in the groups over time. Conclusion Consumption of sumac fruit significantly changed the LDL level over time. Although BMI and serum lipids changed in HD patients, these changes were not significant. Future studies are needed to determine the effective dose of sumac and any dose increase should take toxicity into account and consider a larger sample size and longer intervention and follow-up times.
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Schwarz A, Schäfer F, Framke T, Linnenweber-Held S, Richter N, Haller H. Risk Factors Influencing the Outcomes of Kidney Re-Transplantation. Ann Transplant 2021; 26:e928922. [PMID: 34267171 PMCID: PMC8290903 DOI: 10.12659/aot.928922] [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] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Our kidney transplant waitlist includes 20% re-transplantations (TX2). Knowing what to expect is a clinical obligation. MATERIAL AND METHODS We compared graft and patient survival of all 162 TX2 patients, transplanted 2000 to 2009, with 162 patients after first transplantation (TX1) matched for age, sex, living/non-living donation, and transplantation date. Patient follow-up was 10 years. RESULTS TX2 graft and patient survivals were inferior to TX1 (p<0.001 and p=0.047). TX2 patients had a longer cumulative dialysis vintage, more human leucocyte antigen (HLA) mismatches, more panel-reactive HLA antibodies, more often received induction therapy with rabbit-antithymocyte globulin (rATG), and had a lower body mass index (all p<0.05). Death from infection and graft failure by rejection was more frequent after TX2 (both p<0.05) but not after TX1. Multivariable Cox regression analysis revealed that both cohorts had graft failure and death risk associated with infection and cardiovascular disease, and graft failure by humoral rejection. However, only TX2 patients had an additional risk of graft failure with early inferior graft function and of patient death with ≥2 comorbidities. Moreover, Kaplan-Meier analysis showed that TX2 and not TX1 patients had a lower graft and patient survival associated with infection and with ≥2 comorbidities (all p<0.05). CONCLUSIONS Re-transplantation is associated with worse graft outcomes mainly because of immunologic and graft-quality reasons, although the high number of comorbidities and infection severities aside from cardiovascular disease drive mortality. The more frequent rATG induction of TX2 patients could promote infection by enhancing immunosuppression. By addressing comorbidities, outcomes could possibly be improved.
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Affiliation(s)
- Anke Schwarz
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Frank Schäfer
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Theodor Framke
- Institute for Biostatistics, Hannover Medical School, Hannover, Germany
| | | | - Nicolas Richter
- Department of Visceral Surgery and Transplantation, Hannover Medical School, Hannover, Germany
| | - Hermann Haller
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
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Dam M, Hartman EA, Kruizenga H, van Jaarsveld BC, Weijs PJM. Are we overfeeding hemodialysis patients with protein? Exploring an alternative method to estimate protein needs. Clin Nutr ESPEN 2021; 44:230-235. [PMID: 34330471 DOI: 10.1016/j.clnesp.2021.06.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 06/16/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND & AIMS Sufficient protein intake is of great importance in hemodialysis (HD) patients, especially for maintaining muscle mass. Daily protein needs are generally estimated using bodyweight (BW), in which individual differences in body composition are not accounted for. As body protein mass is best represented by fat free mass (FFM), there is a rationale to apply FFM instead of BW. The agreement between both estimations is unclear. Therefore, the aim of this study is to compare protein needs based on either FFM or BW in HD patients. METHODS Protein needs were estimated in 115 HD patients by three different equations; FFM, BW and BW adjusted for low or high BMI. FFM was measured by multi-frequency bioelectrical impedance spectroscopy and considered the reference method. Estimations of FFM x 1.5 g/kg and FFM x 1.9 g/kg were compared with (adjusted)BW x 1.2 and x 1.5, respectively. Differences were assessed with repeated measures ANOVA and Bland-Altman plots. RESULTS Mean protein needs estimated by (adjusted)BW were higher compared to those based on FFM, across all BMI categories (P < 0.01) and most explicitly in obese patients. In females with BMI >30, protein needs were 69 ± 17.4 g/day higher based on BW and 45 ± 9.3 g/day higher based on BMI adjusted BW, compared to FFM. In males with BMI >30, protein needs were 51 ± 20.4 g/day and 23 ± 20.9 g/day higher compared to FFM, respectively. CONCLUSIONS Our data show large differences and possible overestimations of protein needs when comparing BW to FFM. We emphasize the importance of more research and discussion on this topic.
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Affiliation(s)
- Manouk Dam
- Department of Nutrition and Dietetics, Amsterdam University Medical Centers, Location AMC, Meibergdreef 9, 1105, AZ, Amsterdam, the Netherlands.
| | - Eva Anne Hartman
- Department of Nutrition and Dietetics, Amsterdam University Medical Centers, Location AMC, Meibergdreef 9, 1105, AZ, Amsterdam, the Netherlands.
| | - Hinke Kruizenga
- Department of Nutrition and Dietetics, Amsterdam University Medical Centers, Location VUmc, Boelelaan 1117, 1081, HV, Amsterdam, the Netherlands.
| | - Brigit C van Jaarsveld
- Department of Nephrology, Amsterdam University Medical Centers, Location AMC, Meibergdreef 9, 1105, AZ, Amsterdam, the Netherlands.
| | - Peter J M Weijs
- Department of Nutrition and Dietetics, Amsterdam University Medical Centers, Location VUmc, Boelelaan 1117, 1081, HV, Amsterdam, the Netherlands; Amsterdam University of Applied Sciences, Faculty of Sports and Nutrition, Department of Nutrition and Dietetics, Dr. Meurerlaan 8, 1067, SM, Amsterdam, the Netherlands.
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Chintam K, Chang AR. Strategies to Treat Obesity in Patients With CKD. Am J Kidney Dis 2021; 77:427-439. [PMID: 33075388 PMCID: PMC7904606 DOI: 10.1053/j.ajkd.2020.08.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/11/2020] [Indexed: 12/17/2022]
Abstract
Obesity prevalence continues to increase worldwide, accompanied by a rising tide of hypertension, diabetes, and chronic kidney disease (CKD). Although body mass index is typically used to assess obesity in clinical practice, altered body composition (eg, reduced muscle mass and increased visceral adiposity) are common among patients with CKD. Weight loss achieved through behavioral modification or medications reduces albuminuria and in some cases slows the decline in estimated glomerular filtration rate. Use of medications that promote weight loss with favorable cardiovascular risk profiles should be promoted, particularly in patients with type 2 diabetes, obesity, and CKD. For those who fail to achieve weight loss through lifestyle modification, bariatric surgery should be considered because observational studies have shown reductions in risk for estimated glomerular filtration rate decline and kidney failure. Uncertainty persists on the risk to benefit ratio of intentional weight loss in patients with kidney failure due to the lack of prospective trials and limitations of observational data. Regardless, sleeve gastrectomy is increasingly being used for patients with kidney failure and severe obesity, with success in achieving sustained weight loss, improved access to kidney transplantation, and favorable posttransplantation outcomes. More research is needed assessing long-term cardiovascular and kidney outcomes of most weight loss medications.
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Affiliation(s)
| | - Alex R Chang
- Department of Population of Health Sciences, Geisinger, Danville, PA; Kidney Health Research Institute, Geisinger, Danville, PA; Department of Nephrology, Geisinger, Danville, PA.
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Han BG, Han J, Lee KH. Association of impedance ratio with corrected Geriatric Nutritional Risk Index in older patients with nondialysis chronic kidney disease stage 5. JPEN J Parenter Enteral Nutr 2021; 46:93-103. [PMID: 33586150 DOI: 10.1002/jpen.2089] [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] [Received: 08/21/2020] [Revised: 01/27/2021] [Accepted: 02/09/2021] [Indexed: 01/26/2023]
Abstract
BACKGROUND The usual calculation of body mass index (BMI) can be misleading in patients with advanced chronic kidney disease (CKD) because their altered fluid balances may not be reflected. We obtained corrected BMI (cBMI) and corrected Geriatric Nutritional Risk Index (cGNRI) values and investigated whether the impedance ratio (IR) of 200/5 kHz, measured using bioimpedance spectroscopy, was associated with cGNRI in older patients with nondialysis CKD stage 5 (CKD5-ND). METHODS Patients over 65 years old (n = 118) were divided into groups by cGNRI tertiles. The differences between the correlations were tested using Steiger's z-test. The IR and cBMI were used as both continuous and categorical variables in the regression analyses to determine the factors that were independently associated with the cGNRI. RESULTS Patients in the third cGNRI tertile had a significantly lower mean IR than those in the other 2 tertiles (P < .001). Across the 3 cGNRI tertile groups, the IR was incrementally lower in the higher cGNRI tertiles (P for trend < .001). The Steiger's z-test showed that the IR had a significantly stronger correlation with cGNRI than cBMI had with cGNRI. In the multivariable linear regression analyses, the IR was independently associated with the cGNRI, after adjusting for various confounders. CONCLUSION The current results revealed that the IR was a more sensitive indicator of nutrition risk than BMI and was independently associated with cGNRI in older patients with CKD5-ND. Our study suggests that the IR is an appropriate tool for nutrition risk screening.
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Affiliation(s)
- Byoung-Geun Han
- Department of Nephrology, Yonsei University Wonju College of Medicine, Wonju, Kang-won, Korea
| | - Jihye Han
- Politics and International Relations, London School of Economics and Political Science, London, United Kingdom.,United Nations Development Programme Seoul Policy Center, Seoul, Korea
| | - Kwang Hoon Lee
- Dr. Lee's Medical Clinic and Hemodialysis Center, Wonju, Kang-won, Korea
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Arhuidese IJ, Holscher CM, Elemuo C, Parkerson GR, Johnson BL, Malas MB. Impact of Body Mass Index on Outcomes of Autogenous Fistulas for Hemodialysis Access. Ann Vasc Surg 2020; 68:192-200. [DOI: 10.1016/j.avsg.2020.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 04/14/2020] [Accepted: 04/17/2020] [Indexed: 11/25/2022]
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Ikizler TA, Burrowes JD, Byham-Gray LD, Campbell KL, Carrero JJ, Chan W, Fouque D, Friedman AN, Ghaddar S, Goldstein-Fuchs DJ, Kaysen GA, Kopple JD, Teta D, Yee-Moon Wang A, Cuppari L. KDOQI Clinical Practice Guideline for Nutrition in CKD: 2020 Update. Am J Kidney Dis 2020; 76:S1-S107. [PMID: 32829751 DOI: 10.1053/j.ajkd.2020.05.006] [Citation(s) in RCA: 782] [Impact Index Per Article: 195.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/29/2020] [Indexed: 12/14/2022]
Abstract
The National Kidney Foundation's Kidney Disease Outcomes Quality Initiative (KDOQI) has provided evidence-based guidelines for nutrition in kidney diseases since 1999. Since the publication of the first KDOQI nutrition guideline, there has been a great accumulation of new evidence regarding the management of nutritional aspects of kidney disease and sophistication in the guidelines process. The 2020 update to the KDOQI Clinical Practice Guideline for Nutrition in CKD was developed as a joint effort with the Academy of Nutrition and Dietetics (Academy). It provides comprehensive up-to-date information on the understanding and care of patients with chronic kidney disease (CKD), especially in terms of their metabolic and nutritional milieu for the practicing clinician and allied health care workers. The guideline was expanded to include not only patients with end-stage kidney disease or advanced CKD, but also patients with stages 1-5 CKD who are not receiving dialysis and patients with a functional kidney transplant. The updated guideline statements focus on 6 primary areas: nutritional assessment, medical nutrition therapy (MNT), dietary protein and energy intake, nutritional supplementation, micronutrients, and electrolytes. The guidelines primarily cover dietary management rather than all possible nutritional interventions. The evidence data and guideline statements were evaluated using Grading of Recommendations, Assessment, Development and Evaluation (GRADE) criteria. As applicable, each guideline statement is accompanied by rationale/background information, a detailed justification, monitoring and evaluation guidance, implementation considerations, special discussions, and recommendations for future research.
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Okazaki M, Inaguma D, Imaizumi T, Hishida M, Kurasawa S, Kubo Y, Kato S, Yasuda Y, Katsuno T, Kaneda F, Maruyama S. Impact of old age on the association between in-center extended-hours hemodialysis and mortality in patients on incident hemodialysis. PLoS One 2020; 15:e0235900. [PMID: 32649701 PMCID: PMC7351168 DOI: 10.1371/journal.pone.0235900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 06/25/2020] [Indexed: 11/18/2022] Open
Abstract
With the global problem of aging, it has become more difficult to improve the prognosis of older dialysis patients. Extended-hours hemodialysis offers longer treatment time compared to conventional hemodialysis regimen and provides favorable metabolic status, hemodynamic stability, and increased dietary intake. Despite prior studies reporting that in-center extended-hours hemodialysis can reduce the mortality rate, the treatment impact on elderly patients remains unclear. Therefore, we examined the association between extended-hours hemodialysis compared to conventional hemodialysis and all-cause mortality. Survival analyses using Cox proportional hazard model with multivariable adjustments and propensity-score based method were performed to compare mortality risk between 198 consecutive patients who started in-center extended-hours hemodialysis (Extended-HD) and 1407 consecutive patients who initiated conventional hemodialysis. The median age was 67.1 years in the Extended-HD group and 70.7 years in the conventional hemodialysis group. Extended-HD was associated with lower all-cause mortality in overall patients and the subgroup >70 years (adjusted hazard ratios of 0.60 [95% CI, 0.39–0.91] and 0.35 [95% CI, 0.18–0.69], respectively). There was a significant interaction between age >70 years and Extended-HD. In conclusion, extended-hours hemodialysis was associated with a lower mortality rate, especially in elderly patients.
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Affiliation(s)
- Masaki Okazaki
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Clinical Trials and Research, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Daijo Inaguma
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Takahiro Imaizumi
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Advanced Medicine, Nagoya University Hospital, Nagoya, Japan
- Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Manabu Hishida
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Shimon Kurasawa
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoko Kubo
- Department of Preventive Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Sawako Kato
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshinari Yasuda
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takayuki Katsuno
- Department of Nephrology and Rheumatology, Aichi Medical University School of Medicine, Nagakute, Japan
| | | | - Shoichi Maruyama
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- * E-mail:
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Choudhury RA, Hoeltzel G, Prins K, Chow E, Moore HB, Lawson PJ, Yoeli D, Pratap A, Abt PL, Dumon KR, Conzen KD, Nydam TL. Sleeve Gastrectomy Compared with Gastric Bypass for Morbidly Obese Patients with End Stage Renal Disease: a Decision Analysis. J Gastrointest Surg 2020; 24:756-763. [PMID: 31044345 DOI: 10.1007/s11605-019-04225-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 03/29/2019] [Indexed: 01/31/2023]
Abstract
INTRODUCTION The use of bariatric surgery has increased for morbidly obese patients with end stage renal disease (ESRD) for whom listing on the waitlist is often restricted until a certain BMI threshold is achieved. Effective weight loss for this population improves access to life-saving renal transplantation. However, it is unclear whether sleeve gastrectomy (SG) vs Roux-en-Y gastric bypass (RYGB) is a more effective therapy for these patients. METHODS A decision analytic Markov state transition model was created to simulate the life of morbidly obese patients with ESRD who were deemed ineligible to be waitlisted for renal transplantation unless they achieved a BMI less than 35 kg/m2. Life expectancy following weight management (MWM), RYGB, and SG were estimated. Base case patients were defined as having a pre-intervention BMI of 45 kg/m2. Sensitivity analysis of initial BMI was performed. Markov parameters were extracted from literature review. RESULTS RYGB improved survival compared with SG and MWM. RYGB patients had higher rates of transplantation, leading to improved mean long-term survival. Base case patients who underwent RYGB gained 1.3 additional years of life compared with patient's who underwent SG and 2.6 additional years of life compared with MWM. CONCLUSIONS RYGB improves access to renal transplantation and thereby increases long-term survival compared with SG and MWM. The use of SG may be incongruent with the goal of improving access to renal transplantation for morbidly obese patients.
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Affiliation(s)
- Rashikh A Choudhury
- Department of Surgery, Division of Transplant Surgery, University of Colorado Hospital, Aurora, CO, USA.
| | - Gerard Hoeltzel
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Kas Prins
- Department of Surgery, Division of Transplant Surgery, University of Colorado Hospital, Aurora, CO, USA
| | - Eric Chow
- Department of Medicine- Quantitative Sciences Unit, Stanford University Medical Center, Palo Alto, CA, USA
| | - Hunter B Moore
- Department of Surgery, Division of Transplant Surgery, University of Colorado Hospital, Aurora, CO, USA
| | - Peter J Lawson
- Department of Surgery, Division of Transplant Surgery, University of Colorado Hospital, Aurora, CO, USA
| | - Dor Yoeli
- Department of Surgery, Division of Transplant Surgery, University of Colorado Hospital, Aurora, CO, USA
| | - Akshay Pratap
- Department Surgery, Division of MIS/Bariatric Surgery, University of Colorado Hospital, Aurora, CO, USA
| | - Peter L Abt
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Kristoffel R Dumon
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Kendra D Conzen
- Department of Surgery, Division of Transplant Surgery, University of Colorado Hospital, Aurora, CO, USA
| | - Trevor L Nydam
- Department of Surgery, Division of Transplant Surgery, University of Colorado Hospital, Aurora, CO, USA
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Hishida M, Imaizumi T, Nishiyama T, Okazaki M, Kaihan AB, Kato S, Kubo Y, Ando M, Kaneda H, Maruyama S. Survival Benefit of Maintained or Increased Body Mass Index in Patients Undergoing Extended-Hours Hemodialysis Without Dietary Restrictions. J Ren Nutr 2019; 30:154-162. [PMID: 31401040 DOI: 10.1053/j.jrn.2019.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 05/16/2019] [Accepted: 06/02/2019] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Low body mass index (BMI) is a potential risk factor for mortality in patients on maintenance hemodialysis. This suggests the usefulness of BMI as a prognostic factor and implies the importance of nutritional status, inflammation, and oxidative stress, all of which affect BMI. We aimed to evaluate BMI changes over time and the mortality risk in patients undergoing a novel combination therapy consisting of an extended-hours hemodialysis protocol without dietary restrictions, which enabled sufficient nutrition. DESIGN AND METHODS This is a retrospective cohort study. Patients were divided into 2 groups based on BMI change (ΔBMI < 0, ΔBMI ≥ 0) between the 3rd and 12th month after transfer to the clinic. We studied the associations of BMI changes with all-cause mortality. Further subgroup analyses were performed using Cox models. We finally studied 187 patients who were receiving the combined therapy. The main outcome measure was all-cause mortality of the study group. RESULTS The median (interquartile range) follow-up time was 4.9 (3.0-8.6) years. Overall, 138 patients were in the ΔBMI ≥ 0 group. As per unadjusted and adjusted Cox models, maintained or increased BMI during this period was associated with hazard ratios of 0.45 (confidence interval 0.23-0.87, P < .05) and 0.35 (confidence interval 0.17-0.75, P < .01) for all-cause mortality, respectively. In the same group, maintained or increased BMI was found to be significantly associated with decreased mortality in female, older, and nondiabetic patients. The data indicated that diabetic status could have a modifying effect on the association between variation in BMI and mortality (P = .006). CONCLUSIONS Extended-hours hemodialysis without dietary restrictions led to a beneficial effect of maintenance or increase in BMI, especially in females, patients aged ≥65 years, and those without diabetic nephropathy, which could lead to prolonged survival.
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Affiliation(s)
- Manabu Hishida
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Takahiro Imaizumi
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Toshiro Nishiyama
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Masaki Okazaki
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Ahmad Baseer Kaihan
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Sawako Kato
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Yoko Kubo
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Masahiko Ando
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Hiroshi Kaneda
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan
| | - Shoichi Maruyama
- Department of Nephrology, Nagoya University Graduate School of Medicine, Kamome Clinic, Ibaraki, Japan.
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15
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Hwang SD, Lee JH, Jhee JH, Song JH, Kim JK, Lee SW. Impact of body mass index on survival in patients undergoing peritoneal dialysis: Analysis of data from the Insan Memorial End-Stage Renal Disease Registry of Korea (1985-2014). Kidney Res Clin Pract 2019; 38:239-249. [PMID: 31096315 PMCID: PMC6577214 DOI: 10.23876/j.krcp.18.0106] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 12/30/2018] [Accepted: 01/22/2019] [Indexed: 12/11/2022] Open
Abstract
Background Significant increases in the prevalence of obesity have been observed among patients with peritoneal dialysis (PD). The impact of body mass index (BMI) on survival remains unknown in Korean PD patients. Methods Among data of 80,674 patients on PD acquired from the Insan Memorial ESRD Registry database for the years 1985 to 2014, 6,071 cases were analyzed. Subjects were classified by baseline BMI; < 21.19 kg/m2 (quartile 1, n = 1,518), 21.19 to 23.18 kg/m2 (quartile 2, reference; n = 1,453), 23.19 to 25.71 kg/m2 (quartile 3, n = 1,583), and > 25.71 kg/m2 (quartile 4, n = 1,517). Results Mean age was 65.8 years, and baseline BMI was 23.57 kg/m2. Numbers of male and diabetic patients were 3,492 (57.5%) and 2,192 (36.1%), respectively. Among 6,071 cases, 2,229 (36.7%) all-cause deaths occurred. As a whole, Kaplan–Meier survival curves according to BMI quartiles was significantly different (P = 0.001). All-cause mortality was significantly higher in quartile 4 than in the reference (hazard ratio [HR] = 1.154, 95% confidence interval [CI], 1.025–1.300; P = 0.018). There was no statistical difference in all-cause mortality among BMI quartiles in diabetic patients on PD. In non-diabetic patients, all-cause mortality of quartiles 1 and 3 was not different from the reference, but the HR was 1.176 times higher in quartile 4 (95% CI, 1.024–1.350; P = 0.022). Conclusion Baseline BMI > 25.71 kg/m2 seems to be an important risk factor for all-cause mortality in Korean PD patients.
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Affiliation(s)
- Seun Deuk Hwang
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea
| | - Jin Ho Lee
- Division of Nephrology, Department of Internal Medicine, Bong Seng Memorial Hospital, Busan, Korea
| | - Jong Hyun Jhee
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea
| | - Joon Ho Song
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea
| | - Joong Kyung Kim
- Division of Nephrology, Department of Internal Medicine, Bong Seng Memorial Hospital, Busan, Korea
| | - Seoung Woo Lee
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea
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Abstract
Cardiovascular disease (CVD) is highly prevalent in the peritoneal dialysis (PD) population, affecting up to 60% of cohorts. CVD is the primary cause of death in up to 40% of PD patients in Australia, New Zealand, and the United States. Cardiovascular mortality rates are reported to be approximately 14 per 100 patient-years, which are 10- to 20-fold greater than those of age- and sex-matched controls. The excess risk of CVD is related to a combination of traditional risk factors (such as hypertension, dyslipidemia, obesity, smoking, sedentary lifestyle, and insulin resistance), nontraditional (kidney disease-related) risk factors (such as anemia, chronic volume overload, inflammation, malnutrition, hyperuricemia, and mineral and bone disorder), and PD-specific risk factors (such as dialysis solutions, glycation end products, hypokalemia, residual kidney function, and ultrafiltration failure). Interventions targeting these factors may mitigate cardiovascular risk, although high-level clinical evidence is lacking. This review summarizes the evidence relating to cardiovascular interventions targeting modifiable CVD risk factors in PD patients, as well as highlighting the key recommendations of the International Society for Peritoneal Dialysis Cardiovascular and Metabolic Guidelines.
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17
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Clinical value of body composition monitor to evaluate lean and fat tissue mass in peritoneal dialysis. Eur J Clin Nutr 2019; 73:1520-1528. [PMID: 30647437 DOI: 10.1038/s41430-019-0391-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/30/2018] [Accepted: 12/22/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND/OBJECTIVES Bioimpedance analysis is often routinely performed in any dialysis unit to guide fluid management but can provide a reproduceable assessment of fat and muscle mass. We wished to determine the clinical significance of low muscle or high fat mass and the determinants that influence their change. SUBJECTS/METHODS We performed retrospective analysis of 824 patients on peritoneal dialysis who underwent routine repeated bioimpedance analysis measurements using the body composition monitor (BCM). RESULTS Lean tissue index (LTI) was an independent predictor of mortality when sex, age, PD vintage and diabetes status were included in the models (HR 0.93; 95% CI 0.86-1.00, p < 0.05) and when baseline serum albumin was included in a separate model (HR 0.86; 95% CI: 0.79-0.93, p < 0.001). High fat tissue index (FTI) was an independent predictor of mortality when demographic factors were included (HR 0.87; 95% CI: 0.78-0.97, p < 0.02), but not with the addition biochemical parameters. Changes in body composition of 206 patients over a 2-year follow-up period could not be predicted by baseline demographics, functional or biochemical assessments. However, there was a strong inverse relationship between changes in LTI and FTI. There were no associations between changes in body composition with prescribed dialysate glucose. CONCLUSIONS We showed body composition changes are common and complex. LTI was an independent predictor of survival. Changes in LTI and FTI could not be predicted by baseline parameters. BCM may be a sensitive and accurate tool to monitor changes in body composition during dialysis treatment.
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18
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The state of nutrition care in outpatient hemodialysis settings in Malaysia: a nationwide survey. BMC Health Serv Res 2018; 18:939. [PMID: 30514284 PMCID: PMC6280465 DOI: 10.1186/s12913-018-3702-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 11/09/2018] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND This study aimed to assess the situational capacity for nutrition care delivery in the outpatient hemodialysis (HD) setting in Malaysia by evaluating dietitian accessibility, nutrition practices and patients' outcomes. METHODS A 17-item questionnaire was developed to assess nutrition practices and administered to dialysis managers of 150 HD centers, identified through the National Renal Registry. Nutritional outcomes of 4362 patients enabled crosscutting comparisons as per dietitian accessibility and center sector. RESULTS Dedicated dietitian (18%) and visiting/shared dietitian (14.7%) service availability was limited, with greatest accessibility at government centers (82.4%) > non-governmental organization (NGO) centers (26.7%) > private centers (15.1%). Nutritional monitoring varied across HD centers as per albumin (100%) > normalized protein catabolic rate (32.7%) > body mass index (BMI, 30.7%) > dietary intake (6.0%). Both sector and dietitian accessibility was not associated with achieving albumin ≥40 g/L. However, NGO centers were 36% more likely (p = 0.030) to achieve pre-dialysis serum creatinine ≥884 μmol/L compared to government centers, whilst centers with dedicated dietitian service were 29% less likely (p = 0.017) to achieve pre-dialysis serum creatinine ≥884 μmol/L. In terms of BMI, private centers were 32% more likely (p = 0.022) to achieve BMI ≥ 25.0 kg/m2 compared to government centers. Private centers were 62% less likely (p < 0.001) while NGO centers were 56% less likely (p < 0.001) to achieve serum phosphorus control compared to government centers. Patients from centers with a shared/visiting dietitian had 35% lower probability (p < 0.001) to achieve serum phosphorus levels below 1.78 mmol/L compared to centers without access to a dietitian. CONCLUSIONS There were clear discrepancies in nutritional care in Malaysian HD centers. Changes in stakeholder policy are required to ensure that dietitian service is available in Malaysian HD centers.
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Sato Y, Toida T, Nakagawa H, Iwakiri T, Nishizono R, Kikuchi M, Fujimoto S. Diminishing dry weight is strongly associated with all-cause mortality among long-term maintenance prevalent dialysis patients. PLoS One 2018; 13:e0203060. [PMID: 30148875 PMCID: PMC6110511 DOI: 10.1371/journal.pone.0203060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 08/14/2018] [Indexed: 11/18/2022] Open
Abstract
Objectives To investigate the relationship between dry weight (DW) change and survival in long-term maintenance prevalent dialysis patients. Methods We conducted a prospective data collection study with retrospective analysis of the registered data. Patients were followed up for 5 years (1-year observation of DW changes and subsequent 4-year follow-up). The outcome was all-cause mortality. The predictors were 1-year DW change rates. The hazard ratios (HRs) for all-cause mortality were calculated using multivariable Cox regression analysis, fully adjusted for age, sex, basal kidney disease, dialysis vintage, current smoking, past cardiovascular events, serum albumin, DW at enrollment, serum creatinine, mean predialysis systolic blood pressure, and cardiothoracic ratio or 1-year cardiothoracic ratio change rate. Propensity score (PS) analysis was also conducted using the same covariates of Cox regression analysis. Results In total, 899 dialysis patients (mean dialysis vintage: 101.2 months) were followed up, and 180 deaths were recorded, of which 90 were of cardiovascular origin. Each 2% decrement of DW showed adjusted HR, and the 95% confidence interval was 1.24 [1.16–1.33]. According to the 1-year DW change rate, participants were divided into five groups (group A, ≥+3%; group B, +1 to +2.9%; group C, -0.9 to +0.9%; group D, -2.9 to -1.0%; and group E, ≤-3%). For survival curves based on grouping, group B had the best and group E had the worst survival rate (p<0.01, log-rank test). Therefore, we set group B as a reference; adjusted risks for death of groups D and E were 2.16 [1.23–3.79] and 2.66 [1.54–4.58], respectively. However, this relation was blunted in patients of heavier DW. The PS-matched cohort showed a poorer prognosis in patients with diminishing DW divided by DW change rate at -0.635% (mean value of DW change rate). Conclusion In the long-term maintenance hemodialysis cohort, 1-year DW decrement, especially ≤-3.0%, was significantly associated with all-cause mortality, and cardiovascular disease-related death was prominent in these patients.
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Affiliation(s)
- Yuji Sato
- Dialysis Division, University of Miyazaki Hospital, Miyazaki, Japan
- * E-mail:
| | - Tatsunori Toida
- Department of Hemovascular Medicine and Artificial Organs, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Hideto Nakagawa
- Dialysis Division, University of Miyazaki Hospital, Miyazaki, Japan
| | - Takashi Iwakiri
- Dialysis Division, University of Miyazaki Hospital, Miyazaki, Japan
| | - Ryuzoh Nishizono
- Department of Internal Medicine, Division of Circulatory and Body Fluid Regulation, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Masao Kikuchi
- Department of Internal Medicine, Division of Circulatory and Body Fluid Regulation, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Shouichi Fujimoto
- Department of Hemovascular Medicine and Artificial Organs, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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20
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Polinder-Bos HA, Diepen MV, Dekker FW, Hoogeveen EK, Franssen CFM, Gansevoort RT, Gaillard CAJM. Lower body mass index and mortality in older adults starting dialysis. Sci Rep 2018; 8:12858. [PMID: 30150623 PMCID: PMC6110755 DOI: 10.1038/s41598-018-30952-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 08/06/2018] [Indexed: 01/08/2023] Open
Abstract
Lower body mass index (BMI) has consistently been associated with mortality in elderly in the general and chronic disease populations. Remarkably, in older incident dialysis patients no association of BMI with mortality was found. We performed an in-depth analysis and explored possible time-stratified effects of BMI. 908 incident dialysis patients aged ≥65 years of the NECOSAD study were included, and divided into tertiles by baseline BMI (<23.1 (lower), 23.1–26.0 (reference), ≥26.0 (higher) kg/m2). Because the hazards changed significantly during follow-up, the effect of BMI was modeled for the short-term (<1 year) and longer-term (≥1 year after dialysis initiation). During follow-up (median 3.8 years) 567 deaths occurred. Lower BMI was associated with higher short-term mortality risk (adjusted-HR 1.63 [1.14–2.32] P = 0.007), and lower longer-term mortality risk (adjusted-HR 0.81 [0.63–1.04] P = 0.1). Patients with lower BMI who died during the first year had significantly more comorbidity, and worse self-reported physical functioning compared with those who survived the first year. Thus, lower BMI is associated with increased 1-year mortality, but conditional on surviving the first year, lower BMI yielded a similar or lower mortality risk compared with the reference. Those patients with lower BMI, who had limited comorbidity and better physical functioning, had better survival.
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Affiliation(s)
- Harmke A Polinder-Bos
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
| | - Merel van Diepen
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Friedo W Dekker
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ellen K Hoogeveen
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands.,Department of Nephrology, Jeroen Bosch Hospital, Den Bosch, The Netherlands
| | - Casper F M Franssen
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ron T Gansevoort
- Department of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Carlo A J M Gaillard
- Division of Internal Medicine and Dermatology, Department of Nephrology, University Medical Center Utrecht, University of Utrecht, Utrecht, The Netherlands
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21
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Naderi N, Kleine CE, Park C, Hsiung JT, Soohoo M, Tantisattamo E, Streja E, Kalantar-Zadeh K, Moradi H. Obesity Paradox in Advanced Kidney Disease: From Bedside to the Bench. Prog Cardiovasc Dis 2018; 61:168-181. [PMID: 29981348 DOI: 10.1016/j.pcad.2018.07.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 07/02/2018] [Indexed: 02/06/2023]
Abstract
While obesity is associated with a variety of complications including diabetes, hypertension, cardiovascular disease and premature death, observational studies have also found that obesity and increasing body mass index (BMI) can be linked with improved survival in certain patient populations, including those with conditions marked by protein-energy wasting and dysmetabolism that ultimately lead to cachexia. The latter observations have been reported in various clinical settings including end-stage renal disease (ESRD) and have been described as the "obesity paradox" or "reverse epidemiology", engendering controversy. While some have attributed the obesity paradox to residual confounding in an effort to "debunk" these observations, recent experimental discoveries provide biologically plausible mechanisms in which higher BMI can be linked to longevity in certain groups of patients. In addition, sophisticated epidemiologic methods that extensively adjusted for confounding have found that the obesity paradox remains robust in ESRD. Furthermore, novel hypotheses suggest that weight loss and cachexia can be linked to adverse outcomes including cardiomyopathy, arrhythmias, sudden death and poor outcomes. Therefore, the survival benefit observed in obese ESRD patients can at least partly be derived from mechanisms that protect against inefficient energy utilization, cachexia and protein-energy wasting. Given that in ESRD patients, treatment of traditional risk factors has failed to alter outcomes, detailed translational studies of the obesity paradox may help identify innovative pathways that can be targeted to improve survival. We have reviewed recent clinical evidence detailing the association of BMI with outcomes in patients with chronic kidney disease, including ESRD, and discuss potential mechanisms underlying the obesity paradox with potential for clinical applicability.
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Affiliation(s)
- Neda Naderi
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA; Department of Internal Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Carola-Ellen Kleine
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA; Nephrology Section, Tibor Rubin VA Medical Center, Long Beach, CA
| | - Christina Park
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA; Nephrology Section, Tibor Rubin VA Medical Center, Long Beach, CA
| | - Jui-Ting Hsiung
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA; Nephrology Section, Tibor Rubin VA Medical Center, Long Beach, CA
| | - Melissa Soohoo
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA; Nephrology Section, Tibor Rubin VA Medical Center, Long Beach, CA; Dept. of Epidemiology, UCLA Fielding School of Public Health, Los Angeles, CA
| | - Ekamol Tantisattamo
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA
| | - Elani Streja
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA; Nephrology Section, Tibor Rubin VA Medical Center, Long Beach, CA
| | - Kamyar Kalantar-Zadeh
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA; Nephrology Section, Tibor Rubin VA Medical Center, Long Beach, CA; Dept. of Epidemiology, UCLA Fielding School of Public Health, Los Angeles, CA.
| | - Hamid Moradi
- Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, School of Medicine, Orange, CA; Nephrology Section, Tibor Rubin VA Medical Center, Long Beach, CA.
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22
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Rahimlu M, Shab-Bidar S, Djafarian K. Body Mass Index and All-cause Mortality in Chronic Kidney Disease: A Dose-response Meta-analysis of Observational Studies. J Ren Nutr 2018. [PMID: 28625526 DOI: 10.1053/j.jrn.2017.01.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
This article provides a dose-response meta-analysis to evaluate the relationship between body mass index (BMI) and all-cause and disease-specific mortality in chronic kidney disease (CKD) by pooling together early stage, hemodialysis, and peritoneal dialysis patients. We evaluated eligible studies that published between 1966 and December 2014 by searching in PubMed, Object View and Interaction Design (OVID), and the Scopus databases. We used random-effects generalized least squares spline models for trend estimation to derive pooled dose-response estimates. Nonlinear associations of BMI with all-cause mortality were observed (P-nonlinearity < .0001), with an increased rate of mortality with BMIs > 30 kg/m2 in all stages of CKD together. However, reanalysis of data separately by stage of CKD (hemodialysis and peritoneal dialysis) showed that the risk of all-cause mortality decreased with a steep slope in individuals with BMIs > 30 kg/m2. This meta-analysis indicates that higher BMI has protective effects with respect to all-cause mortality in patients with both type of dialysis.
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Affiliation(s)
- Mehran Rahimlu
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Sakineh Shab-Bidar
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
| | - Kurosh Djafarian
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
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23
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Golestaneh L. Decreasing hospitalizations in patients on hemodialysis: Time for a paradigm shift. Semin Dial 2018; 31:278-288. [DOI: 10.1111/sdi.12675] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ladan Golestaneh
- Nephrology Division; Department of Medicine; Montefiore Medical Center; Albert Einstein College of Medicine; Bronx NY USA
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24
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Peritoneal dialysis catheter function and survival are not adversely affected by obesity regardless of the operative technique used. Surg Endosc 2017; 32:1714-1723. [DOI: 10.1007/s00464-017-5852-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 08/22/2017] [Indexed: 10/18/2022]
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25
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Liu J, Zeng X, Hong HG, Li Y, Fu P. The association between body mass index and mortality among Asian peritoneal dialysis patients: A meta-analysis. PLoS One 2017; 12:e0172369. [PMID: 28207885 PMCID: PMC5313204 DOI: 10.1371/journal.pone.0172369] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 02/03/2017] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Previous studies have revealed that increased body mass index (BMI) is associated with decreased mortality among hemodialysis patients. However, few studies have dealt with the association between BMI and mortality among patients undergoing peritoneal dialysis (PD) and even fewer studies have focused on the Asian PD patients. The reported studies were often non-conclusive and some even yielded contradictory results. This paper, to our best knowledge, registers the first attempt to systematically review the current literature and summarize new results on the association between BMI and mortality among the Asian PD population. METHOD A systematic literature review was performed in Medline and EMBASE to identify relevant cohort studies on all-cause and cardiovascular disease (CVD) mortality stratified by BMI categories tailored to Asians among the Asian PD population. We meta-analyzed individual results based on a random effect model, strictly complying with Preferred Reporting Items for Systematic Reviews and Meta-analysis. RESULTS The paper reviews seven cohort studies with a total of 3,610 Asian PD patients. Obese group (BMI = 25-29.9 kg/m2) was associated with higher risk of all-cause mortality (HR = 1.46, 95%CI [1.07-1.98]; p = 0.02) and CVD mortality (HR = 2.01, 95%CI [1.14-3.54]; p = 0.02), compared to the normal group (BMI = 18.5-22.9 kg/m2). The underweight group (BMI<18.5kg/m2) was also associated with an elevated risk of all-cause mortality (HR = 2.11, 95%CI [1.46-3.07]; p<0.001). No significant associations between BMI with all-cause mortality were found among the overweight group (23-24.9 kg/m2) (HR = 1.00, 95%CI [0.76-1.32]; p = 0.9). The association between BMI and CVD mortality risk among the underweight and overweight groups was found nonsignificant (p = 0.5 and 0.6 respectively). CONCLUSION Obesity is associated with increased mortality in Asian PD patients. The study indicates a "V-shaped" trend in the association between BMI and mortality in these patients.
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Affiliation(s)
- Jing Liu
- Division of Nephrology, Kidney Research Institution, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Xiaoxi Zeng
- Division of Nephrology, Kidney Research Institution, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Hyokyoung G. Hong
- Department of Statistics and Probability, Michigan State University, East Lansing, Michigan, United States of America
| | - Yi Li
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Ping Fu
- Division of Nephrology, Kidney Research Institution, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
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Abstract
Technical innovations in peritoneal dialysis (PD), now used widely for the long-term treatment of ESRD, have significantly reduced therapy-related complications, allowing patients to be maintained on PD for longer periods. Indeed, the survival rate for patients treated with PD is now equivalent to that with in-center hemodialysis. In parallel, changes in public policy have spurred an unprecedented expansion in the use of PD in many parts of the world. Meanwhile, our improved understanding of the molecular mechanisms involved in solute and water transport across the peritoneum and of the pathobiology of structural and functional changes in the peritoneum with long-term PD has provided new targets for improving efficiency and for intervention. As with hemodialysis, almost half of all deaths on PD occur because of cardiovascular events, and there is great interest in identifying modality-specific factors contributing to these events. Notably, tremendous progress has been made in developing interventions that substantially reduce the risk of PD-related peritonitis. Yet the gains have been unequal among individual centers, primarily because of unequal clinical application of knowledge gained from research. The work to date has further highlighted the areas in need of innovation as we continue to strive to improve the health and outcomes of patients treated with PD.
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Affiliation(s)
- Rajnish Mehrotra
- Kidney Research Institute and
- Harborview Medical Center, Division of Nephrology, Department of Medicine, University of Washington, Seattle, Washington
| | - Olivier Devuyst
- Institute of Physiology, University of Zurich, Zurich, Switzerland
- Division of Nephrology, Université Catholique de Louvain Medical School, Brussels, Belgium
| | - Simon J Davies
- Department of Nephrology, Keele University, Staffordshire, United Kingdom; and
| | - David W Johnson
- Department of Nephrology, Division of Medicine, Princess Alexandra Hospital, University of Queensland, Brisbane, Australia
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27
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Ekart R, Hojs R. Obese and diabetic patients with end-stage renal disease: Peritoneal dialysis or hemodialysis? Eur J Intern Med 2016; 32:1-6. [PMID: 27067614 DOI: 10.1016/j.ejim.2016.03.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 02/20/2016] [Accepted: 03/18/2016] [Indexed: 12/13/2022]
Abstract
Obesity is a chronic disease that is increasingly prevalent around the world and is a well-recognized risk factor for type 2 diabetes and hypertension, leading causes of end-stage renal disease (ESRD). The obese diabetic patient with ESRD is a challenge for the nephrologist with regard to the type of renal replacement therapy that should be suggested and offered to the patient. There is no evidence that either peritoneal dialysis or hemodialysis is contraindicated in obese ESRD patients. In the literature, we can find a discrepancy in the impact of obesity on mortality among hemodialysis vs. peritoneal dialysis patients. Several studies in hemodialysis patients suggest that a higher BMI confers a survival advantage - the so-called "reverse epidemiology". In contrast, the literature among obese peritoneal dialysis patients is inconsistent, with various studies reporting an increased risk of death, no difference, or a decreased risk of death. Many of these studies only spanned across a few years, and this is probably too short of a time frame for a realistic assessment of obesity's impact on mortality in ESRD patients. The decision for dialysis modality in an obese diabetic patient with ESRD should be individualized. According to the results of published studies, we cannot suggest PD or HD as a better solution for all obese diabetic patients. The obese patient should be educated about all their dialysis options, including home dialysis therapies. In this review, the available literature related to the dialysis modality in obese patients with diabetes and ESRD was reviewed.
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Affiliation(s)
- Robert Ekart
- University Medical Centre Maribor, Clinic for Internal Medicine, Department of Dialysis, Maribor, Slovenia; University of Maribor, Faculty of Medicine, Maribor, Slovenia.
| | - Radovan Hojs
- University of Maribor, Faculty of Medicine, Maribor, Slovenia; University Medical Centre Maribor, Clinic for Internal Medicine, Department of Nephrology, Maribor, Slovenia
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28
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Duranton F, Duny Y, Szwarc I, Deleuze S, Rouanet C, Selcer I, Maurice F, Rivory JP, Servel MF, Jover B, Brunet P, Daurès JP, Argilés À. Early changes in body weight and blood pressure are associated with mortality in incident dialysis patients. Clin Kidney J 2016; 9:287-94. [PMID: 26985382 PMCID: PMC4792627 DOI: 10.1093/ckj/sfv153] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 12/18/2015] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND While much research is devoted to identifying novel biomarkers, addressing the prognostic value of routinely measured clinical parameters is of great interest. We studied early blood pressure (BP) and body weight (BW) trajectories in incident haemodialysis patients and their association with all-cause mortality. METHODS In a cohort of 357 incident patients, we obtained all records of BP and BW during the first 90 days on dialysis (over 12 800 observations) and analysed trajectories using penalized B-splines and mixed linear regression models. Baseline comorbidities and all-cause mortality (median follow-up: 2.2 years) were obtained from the French Renal Epidemiology and Information Network (REIN) registry, and the association with mortality was assessed by Cox models adjusting for baseline comorbidities. RESULTS During the initial 90 days on dialysis, there were non-linear decreases in BP and BW, with milder slopes after 15 days [systolic BP (SBP)] or 30 days [diastolic BP (DBP) and BW]. SBP or DBP levels at dialysis initiation and changes in BW occurring in the first month or during the following 2 months were significantly associated with survival. In multivariate models adjusting for baseline comorbidities and prescriptions, higher SBP value and BW slopes were independently associated with a lower risk of mortality. Hazard ratios of mortality and 95% confidence intervals were 0.92 (0.85-0.99) for a 10 mmHg higher SBP and 0.76 (0.66-0.88) for a 1 kg/month higher BW change on Days 30-90. CONCLUSIONS BW loss in the first weeks on dialysis is a strong and independent predictor of mortality. Low BP is also associated with mortality and is probably the consequence of underlying cardiovascular diseases. These early markers appear to be valuable prognostic factors.
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Affiliation(s)
- Flore Duranton
- RD – Néphrologie/EA7288, Université Montpellier, Montpellier, France
| | - Yohan Duny
- EA2415, Institut Universitaire de Recherche Clinique, Université Montpellier, Montpellier, France
| | - Ilan Szwarc
- Néphrologie Dialyse Saint Guilhem, Sète, France
| | | | | | | | | | | | | | - Bernard Jover
- EA7288, UFR Pharmacie, Université Montpellier, Montpellier, France
| | - Philippe Brunet
- Service de Néphrologie, CHU de La Conception, Université Aix – Marseille, Marseille, France
| | - Jean-Pierre Daurès
- EA2415, Institut Universitaire de Recherche Clinique, Université Montpellier, Montpellier, France
| | - Àngel Argilés
- RD – Néphrologie/EA7288, Université Montpellier, Montpellier, France
- Néphrologie Dialyse Saint Guilhem, Sète, France
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29
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Ito K, Ookawara S, Ueda Y, Miyazawa H, Yamada H, Goto S, Ishii H, Shindo M, Kitano T, Hirai K, Yoshida M, Kaku Y, Hoshino T, Nabata A, Mori H, Yoshida I, Kakei M, Morishita Y, Tabei K. A Higher Cardiothoracic Ratio Is Associated with 2-Year Mortality after Hemodialysis Initiation. NEPHRON EXTRA 2015; 5:100-10. [PMID: 26951636 PMCID: PMC4777940 DOI: 10.1159/000442591] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
UNLABELLED A high cardiothoracic ratio (CTR) is indicative of a cardiac disorder. However, few reports have revealed an association between the CTR and mortality in patients starting hemodialysis (HD). METHODS Patients with HD initiation (n = 387; mean age, 66.7 ± 12.7 years) were divided into the following three groups according to their CTR at HD initiation: CTR <50%, 50% ≤ CTR < 55%, and CTR ≥55%. Kaplan-Meier analysis was performed to compare 2-year all-cause mortality among these groups. Furthermore, we investigated the factors affecting their 2-year mortality using a Cox proportional hazard regression analysis. RESULTS Sixty-five patients (17%) died within 2 years after HD initiation. Kaplan-Meier analysis showed that patients with CTR ≥55% had a higher mortality rate than those in the other groups. Cox proportional hazard regression analysis was performed using parameters with p values <0.1 among these three groups [sex, age, presence or absence of ischemic heart disease, hemoglobin levels, serum albumin levels, CTR, body mass index (BMI)] and confounding factors [presence or absence of diabetes mellitus, and estimated glomerular filtration rate (eGFR)]. Age, eGFR, BMI, and CTR ≥55% at HD initiation were identified as factors influencing 2-year mortality. CONCLUSION CTR >55% is one of the most important independent factors to affect 2-year all-cause mortality. Thus, confirming the cardiac condition of patients at HD initiation with a CTR >55% may improve their survival.
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Affiliation(s)
- Kiyonori Ito
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Susumu Ookawara
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Yuichiro Ueda
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Haruhisa Miyazawa
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Hodaka Yamada
- Endocrinology and Metabolism, First Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Sawako Goto
- Division of Clinical Nephrology and Rheumatology, Niigata University Medical and Dental Hospital, Japan
| | - Hiroki Ishii
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Mitsutoshi Shindo
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Taisuke Kitano
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Keiji Hirai
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Masashi Yoshida
- Endocrinology and Metabolism, First Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Yoshio Kaku
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Taro Hoshino
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Aoi Nabata
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Honami Mori
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | | | - Masafumi Kakei
- Endocrinology and Metabolism, First Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Yoshiyuki Morishita
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Kaoru Tabei
- Divisions of Nephrology, Saitama Medical Center, Jichi Medical University, Saitama, Japan; Minami-Uonuma City Hospital, Niigata, Japan
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