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da Silva CR, Carvalho HC, Lazo Osório RA, Fernandes AB, Silveira L. Differences in whole blood before and after hemodialysis session of subjects with chronic kidney disease measured by Raman spectroscopy. Lasers Med Sci 2024; 39:175. [PMID: 38970671 DOI: 10.1007/s10103-024-04125-9] [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: 03/13/2024] [Accepted: 06/24/2024] [Indexed: 07/08/2024]
Abstract
This study aimed to identify differences in the composition of whole blood of patients with chronic kidney disease (CKD), before and after a hemodialysis session (HDS), and possible differences in blood composition between stages and between genders using Raman spectroscopy and principal component analysis (PCA). Whole blood samples were collected from 40 patients (20 women and 20 men), before and after a HDS. Raman spectra were obtained and the spectra were evaluated by PCA and partial least squares (PLS) regression. Mean spectra and difference spectrum between the groups were calculated: stages Before and After HDS, and gender Women and Men, which had their most intense peaks identified. Stage: mean spectra and difference spectrum indicated positive peaks that could be assigned to red blood cells, hemoglobin and deoxi-hemoglobin in the group Before HDS. There was no statistically significant difference by PCA. Gender: mean spectra and difference spectrum Before HDS indicated positive peaks that could be assigned to red blood cells, hemoglobin and deoxi-hemoglobin with greater intensity in the group Women, and negative peaks to white blood cells and serum, with greater intensity in the group Men. There was statistically significant difference by PCA, which also identified the peaks assigned to white blood cells, serum and porphyrin for Women and red blood cells and amino acids (tryptophan) for Men. PLS model was able to classify the spectra of the gender with 83.7% accuracy considering the classification per patient. The Raman technique highlighted gender differences in pacients with CKD.
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Affiliation(s)
| | - Henrique Cunha Carvalho
- Centro de Inovação, Tecnologia e Educação - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, Estrada Dr. Altino Bondensan, 500, Eugênio de Melo, São José dos Campos, 12247-016, SP, Brazil
- Universidade Tecnológica Federal do Paraná - UTFPR, Via Marginal Rosalina Maria dos Santos, 1233, Bloco B, Vila Urbanizada, Campo Mourão, 87301-899, PR, Brazil
| | - Rodrigo Alexis Lazo Osório
- Centro de Inovação, Tecnologia e Educação - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, Estrada Dr. Altino Bondensan, 500, Eugênio de Melo, São José dos Campos, 12247-016, SP, Brazil
| | - Adriana Barrinha Fernandes
- Universidade Anhembi Morumbi - UAM, Rua Casa do Ator, 294, Vila Olímpia, São Paulo, 04546-001, SP, Brazil
- Centro de Inovação, Tecnologia e Educação - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, Estrada Dr. Altino Bondensan, 500, Eugênio de Melo, São José dos Campos, 12247-016, SP, Brazil
| | - Landulfo Silveira
- Universidade Anhembi Morumbi - UAM, Rua Casa do Ator, 294, Vila Olímpia, São Paulo, 04546-001, SP, Brazil.
- Centro de Inovação, Tecnologia e Educação - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, Estrada Dr. Altino Bondensan, 500, Eugênio de Melo, São José dos Campos, 12247-016, SP, Brazil.
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Seirafian S, Feizi A, Shahidi S, Badri SS, Rouhani MH, Najafabadi PP, Naeini EK. The effect of oral zinc on hemoglobin and dose of erythropoietin in hemodialysis patients. JOURNAL OF RESEARCH IN MEDICAL SCIENCES : THE OFFICIAL JOURNAL OF ISFAHAN UNIVERSITY OF MEDICAL SCIENCES 2024; 28:85. [PMID: 38510781 PMCID: PMC10953733 DOI: 10.4103/jrms.jrms_271_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/15/2023] [Accepted: 10/16/2023] [Indexed: 03/22/2024]
Abstract
Background In hemodialysis (HD) patients, low serum zinc level could cause hyporesponsivity to erythropoiesis-stimulating agents and lead to anemia. This study investigated the effects of oral zinc supplements on the required dose of erythropoietin in patients undergoing HD. Materials and Methods In a double-blinded randomized trial, 76 HD patients were assigned to 2 groups of 38. One group (intervention) was treated with oral zinc supplements of 210 mg, daily for 6 months, and the other group (control) used placebo capsules for 6 months. The serum zinc level, hemoglobin level, and required dose of erythropoietin, albumin, ferritin, ferrous, and total iron-binding capacity were evaluated 3 and 6 months after intervention. Results Repeated measures ANOVA did not show a significant increase in Hb level after 6 months of intervention (P = 0.28). However, the required dose of erythropoietin was decreased, but the changes were not statistically significant (P > 0.05). The changes in the other variables were not statistically significant. Conclusion Oral zinc supplementation in HD patients could not increase hemoglobin level irrespective of their serum zinc level.
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Affiliation(s)
- Shiva Seirafian
- Isfahan Kidney Diseases Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Awat Feizi
- Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical Science, Isfahan, Iran
| | - Shahrzad Shahidi
- Department of Internal Medicine, Isfahan Kidney Diseases Research Center, Khorshid Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shirin Sadat Badri
- Department of Clinical Pharmacy and Pharmacy Practice, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Hossein Rouhani
- Food Security Research Center, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Elham Kabiri Naeini
- Isfahan Kidney Diseases Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Osueni A, Alasadi L, Jean-Louis F, Sergiy S, Spitalewitz S. The Resolution of a Cerebrovascular Accident With Phlebotomy in a Hemodialysis Patient With Sickle Cell Disease. Cureus 2023; 15:e48897. [PMID: 38106733 PMCID: PMC10725196 DOI: 10.7759/cureus.48897] [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] [Accepted: 11/15/2023] [Indexed: 12/19/2023] Open
Abstract
Anemia is commonly observed in patients with end-stage renal disease (ESRD) on maintenance hemodialysis (HD) and can be quite severe, particularly when there is an additional comorbidity. With the use of erythropoietin-stimulating agents (ESAs), anemia is effectively treated, but the complete normalization of hemoglobin is not recommended since these agents increase the risk of thrombosis. With improvements in the therapy of sickle cell disease (SCD), patients now survive longer and may more frequently reach end-stage renal disease and require renal replacement therapy. Their anemia can be severe but does respond to ESAs. The goal hemoglobin in these patients is not established and likely should be lower than others on maintenance hemodialysis (HD) since SCD patients already have an increased risk of thrombosis, and the use of ESAs may exacerbate this risk. We present a 57-year-old African-American female with SCD on maintenance HD admitted with an acute cerebrovascular accident (CVA) that occurred in spite of the fact that her hemoglobin was within the accepted range for the general population on maintenance HD. Her neurologic status did not improve with blood pressure control and exchange transfusions, the suggested initial therapy for an acute CVA in a patient with sickle cell disease (SCD). However, with phlebotomy, the patient's symptoms rapidly improved when her hemoglobin was lowered and subsequently maintained with a lower dose of ESAs. Our experience suggests that the hemoglobin goal in SCD patients on maintenance HD should be lower than in other HD patients. The role of phlebotomy during an acute thrombotic event needs to be explored further.
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Affiliation(s)
- Azeberoje Osueni
- Nephrology, Brookdale University Hospital Medical Center, Brooklyn, USA
| | - Lutfi Alasadi
- Medicine/Nephrology, Brookdale University Hospital Medical Center, Brooklyn, USA
| | - Farla Jean-Louis
- Internal Medicine, Brookdale University Hospital Medical Center, Brooklyn, USA
| | - Shurin Sergiy
- Nephrology, Brookdale University Hospital Medical Center, Brooklyn, USA
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Zhao XN, Liu SX, Wang ZZ, Zhang S, You LL. Roxadustat alleviates the inflammatory status in patients receiving maintenance hemodialysis with erythropoiesis-stimulating agent resistance by increasing the short-chain fatty acids producing gut bacteria. Eur J Med Res 2023; 28:230. [PMID: 37430374 DOI: 10.1186/s40001-023-01179-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 06/20/2023] [Indexed: 07/12/2023] Open
Abstract
BACKGROUND Hypoxia-inducible factor-prolyl hydroxylase inhibitors (HIF-PHIs) have improved the treatment of renal anemia, especially in patients resistant to erythropoiesis-stimulating agents (ESAs). HIF facilitates maintain gut microbiota homeostasis, which plays an important role in inflammation and iron metabolism, which are in turn key factors affecting ESA resistance. The current study aimed to investigate the effects of roxadustat on inflammation and iron metabolism and on the gut microbiota in patients with ESA resistance. METHODS We conducted a self-controlled, single-center study including 30 patients with ESA resistance undergoing maintenance hemodialysis. All patients received roxadustat without iron agents for renal anemia. Hemoglobin and inflammatory factors were monitored. Fecal samples were collected before and after 3 months' administration and the gut microbiota were analyzed by 16S ribosomal RNA gene sequencing. RESULTS Hemoglobin levels increased after treatment with roxadustat for 3 months (P < 0.05). Gut microbiota diversity and abundance also changed, with increases in short-chain fatty acid (SCFA)-producing bacteria (Acidaminococcaceae, Butyricicoccus, Ruminococcus bicirculans, Ruminococcus bromii, Bifidobacterium dentium, Eubacterium hallii) (P < 0.05). Serum SCFA levels also increased (P < 0.05). Inflammatory factors, including interleukin (IL)-1, IL-6, tumor necrosis factor (TNF)-α, interferon-γ, and endotoxin gradually decreased (P < 0.05). Serum hepcidin, ferritin, and total and unsaturated iron-binding capacities decreased (P < 0.05), while soluble transferrin receptor levels increased at each time point (P < 0.05). There were no significant differences in serum iron and transferrin saturation at each time point. The abundance of Alistipes shahii was significantly negatively correlated with IL-6 and TNF-α (P < 0.05). CONCLUSIONS Roxadustat alleviated renal anemia in patients with ESA resistance by decreasing inflammatory factors and hepcidin levels and improving iron utilization. These effects were at least partly mediated by improved diversity and abundance of SCFA-producing gut bacteria, probably via activation of HIF.
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Affiliation(s)
- Xiu-Nan Zhao
- Department of Nephrology, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China
- Dalian Key Laboratory of Intelligent Blood Purification, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China
| | - Shu-Xin Liu
- Department of Nephrology, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China.
- Dalian Key Laboratory of Intelligent Blood Purification, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China.
- School of Clinical Medicine, Faculty of Medicine, Dalian University of Technology, No. 2, Linggong Road, Dalian, 116024, Liaoning, China.
| | - Zhen-Zhen Wang
- Department of Nephrology, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China
- Dalian Key Laboratory of Intelligent Blood Purification, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China
| | - Shuang Zhang
- Department of Nephrology, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China
- Dalian Key Laboratory of Intelligent Blood Purification, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China
| | - Lian-Lian You
- Department of Nephrology, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China
- Dalian Key Laboratory of Intelligent Blood Purification, Dalian Municipal Central Hospital, No. 826, Xinan Road, Dalian, 116033, Liaoning, China
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Winkelmayer WC, Arnold S, Burke SK, Chertow GM, Eckardt KU, Jardine AG, Lewis EF, Luo W, Matsushita K, McCullough PA, Minga T, Parfrey PS. Safety Endpoints With Vadadustat Versus Darbepoetin Alfa in Patients With Non-Dialysis-Dependent CKD: A Post Hoc Regional Analysis of the PRO 2TECT Randomized Clinical Trial of ESA-Naïve Patients. Kidney Med 2023; 5:100666. [PMID: 37427293 PMCID: PMC10329162 DOI: 10.1016/j.xkme.2023.100666] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023] Open
Abstract
Rationale & Objective Prespecified analyses of the PRO2TECT trials comparing the safety of the oral hypoxia-inducible factor prolyl hydroxylase inhibitor vadadustat with darbepoetin alfa in patients with non-dialysis-dependent chronic kidney disease (NDD-CKD) found no difference in major adverse cardiovascular events (MACE; death from any cause or nonfatal myocardial infarction or stroke) among US patients and a higher risk among patients treated with vadadustat outside the United States. We investigated regional differences in MACE in the PRO2TECT trial that enrolled 1,751 patients previously untreated with erythropoiesis-stimulating agents. Study Design Phase 3, global, open-label, randomized, active-controlled clinical trial. Setting and Participants Erythropoiesis-stimulating agent-untreated patients with anemia and NDD-CKD. Intervention Eligible patients were randomized 1:1 to receive vadadustat or darbepoetin alfa. Outcomes The primary safety end point was time to first MACE. Secondary safety end points included time to first expanded MACE (MACE plus hospitalization for heart failure or thromboembolic event, excluding vascular access thrombosis). Results In the non-US/non-Europe region, there was a higher proportion of patients with baseline estimated glomerular filtration rate (eGFR) level of ≤10 mL/min/1.73 m2 in the vadadustat group [96 (34.7%)] than in the darbepoetin alfa group [66 (24.0%)]. In this region, there were 21 excess MACEs reported in the vadadustat group [78 events (n=276)] versus the darbepoetin alfa [57 events (n=275)], including 13 excess noncardiovascular deaths, largely from kidney failure. Noncardiovascular deaths were concentrated in Brazil and South Africa, which enrolled higher proportions of patients with an eGFR of ≤10 mL/min/1.73 m2 and who may not have had access to dialysis. Limitations Different regional treatment patterns of patients with NDD-CKD. Conclusions The higher MACE rate in the non-US/non-Europe vadadustat group may have been partly because of imbalances in the baseline eGFR level in countries where dialysis was not uniformly available resulting in many kidney-related deaths.
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Affiliation(s)
| | - Susan Arnold
- Excellentis Clinical Trial Consultants, South Africa
| | | | - Glenn M. Chertow
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA
| | - Kai-Uwe Eckardt
- Department of Nephrology and Medical Intensive Care, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Alan G. Jardine
- Department of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Eldrin F. Lewis
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA
| | - Wenli Luo
- Akebia Therapeutics Inc, Cambridge, MA
| | - Kunihiro Matsushita
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | | | | | - Patrick S. Parfrey
- Division of Nephrology, Memorial University, St John's, Newfoundland, Canada
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Parfrey PS, Burke SK, Chertow GM, Eckardt KU, Jardine AG, Lewis EF, Luo W, Matsushita K, McCullough PA, Minga T, Winkelmayer WC. Safety Endpoints With Vadadustat Versus Darbepoetin Alfa in Patients With Non -Dialysis-Dependent CKD: A Post Hoc Regional Analysis of the PRO 2TECT Randomized Clinical Trial of ESA-Treated Patients. Kidney Med 2023; 5:100667. [PMID: 37427292 PMCID: PMC10329165 DOI: 10.1016/j.xkme.2023.100667] [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: 07/11/2023] Open
Abstract
Rationale & Objective In the PRO2TECT trials, vadadustat was found to be noninferior to darbepoetin alfa in hematologic efficacy but not for major adverse cardiovascular events (MACE; all-cause death or nonfatal myocardial infarction or stroke) in patients with non-dialysis-dependent chronic kidney disease (NDD-CKD). We investigated the regional differences in MACE in the PRO2TECT trials. Study Design Phase 3, global, open-label, randomized, active-controlled clinical trial. Setting & Participants A total of 1,725 erythropoiesis-stimulating agent (ESA)-treated patients with anemia and NDD-CKD. Intervention 1:1 randomization to receive vadadustat or darbepoetin alfa. Outcomes The primary safety end point was the time to first MACE. Results At baseline, patients in Europe (n=444) were primarily treated with darbepoetin alfa, showed higher proportions on low ESA doses (<90 U/kg/wk epoetin alfa equivalents) with a hemoglobin concentration of ≥10 g/dL compared with patients in the US (n=665) and non-US/non-Europe (n=614) regions. The MACE rates per 100 person-years in the 3 vadadustat groups across regions were 14.5 in the US, 11.6 in Europe, and 10.0 in the non-US/non-Europe groups, whereas event rates in the darbepoetin alfa group were considerably lower in Europe than in the US and non-US/non-Europe groups (6.7 vs 13.3 and 10.5, respectively). The overall hazard ratio for MACE for vadadustat vs darbepoetin alpha was 1.16; 95% CI, 0.93-1.45, but varied by geographical region, with a greater hazard ratio seen in Europe (US, 1.07; 95% CI, 0.78-1.46; Europe, 2.05; 95% CI, 1.24-3.39; non-US/non-Europe, 0.91; 95% CI, 0.60-1.37); interaction between study treatment and geographical region, P = 0.07). In Europe, ESA rescue was associated with a higher risk of MACE in both groups. Limitations Several analyses are exploratory. Conclusions In this trial, there was a low risk of MACE in the darbepoetin alfa group in Europe. Patients in Europe were generally on low doses of ESA, with hemoglobin already within target range. The low risk of MACE may have been related to a limited need to switch and titrate darbepoetin alfa compared with the non-US/non-Europe group. Funding Akebia Therapeutics, Inc. Trial Registration ClinicalTrials.gov identifier: NCT02680574.
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Affiliation(s)
- Patrick S. Parfrey
- Department of Medicine, Memorial University, St John's, Newfoundland, Canada
| | | | | | - Kai-Uwe Eckardt
- Department of Nephrology and Medical Intensive Care, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Alan G. Jardine
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | | | - Wenli Luo
- Akebia Therapeutics, Inc., Cambridge, MA
| | - Kunihiro Matsushita
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | | | - Todd Minga
- Akebia Therapeutics, Inc., Cambridge, MA
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Ito H, Araki R, Mori T, Inoue H, Matsumoto S, Antoku S, Yamasaki T, Togane M. Relationship Between the Effect of Roxadustat and Comorbid Diabetes in Non-dialyzed Chronic Kidney Disease Patients: A Retrospective Observational Study. Cureus 2023; 15:e39543. [PMID: 37378104 PMCID: PMC10290911 DOI: 10.7759/cureus.39543] [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] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Introduction The dose of roxadustat, a hypoxia-inducible factor prolyl hydroxylase (HIF-PH) inhibitor, required to treat anemia, the hemoglobin level and the rate of hemoglobin target achievement were retrospectively investigated in non-dialyzed chronic kidney disease (CKD) patients with and without type 2 diabetes. Methods As the full analysis set, 25 subjects (10 with diabetes and 15 without diabetes) were observed over six months among 44 non-dialyzed CKD patients who received roxadustat. The target hemoglobin level was set at 110-130 g/L. Results The comorbidities of diabetes and body weight at baseline were significantly associated with each dose of roxadustat at six months and the change in each dose of roxadustat from the initiation of roxadustat treatment. There was no significant difference in the amount of increase in the hemoglobin level (14±11 g/L vs. 15±8 g/L) and the rate of hemoglobin target achievement (70% vs. 67%) between patients with and without diabetes. Each dose of roxadustat gradually decreased in patients without diabetes, whereas it increased in those with diabetes. Each dose of roxadustat was significantly higher in patients with diabetes than in those without diabetes at 3 (60±21 mg vs. 42±14 mg) and 6 (61±22 mg vs. 41±14 mg) months after the initiation of roxadustat treatment. Conclusion Roxadustat is useful for the treatment of anemia in both CKD patients with and without diabetes. However, the dose required to achieve the target hemoglobin level may be higher in patients with diabetes than in those without diabetes.
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Affiliation(s)
- Hiroyuki Ito
- Diabetes and Endocrinology, Edogawa Hospital, Tokyo, JPN
| | - Rie Araki
- Nephrology, Edogawa Hospital, Tokyo, JPN
| | - Toshiko Mori
- Diabetes and Endocrinology, Edogawa Hospital, Tokyo, JPN
| | - Hideyuki Inoue
- Diabetes and Endocrinology, Edogawa Hospital, Tokyo, JPN
| | | | | | | | - Michiko Togane
- Diabetes and Endocrinology, Edogawa Hospital, Tokyo, JPN
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Maruyama Y, Yokoyama K, Higuchi C, Sanaka T, Tanaka Y, Sakai K, Kanno Y, Ryuzaki M, Sakurada T, Hosoya T, Nakayama M. Changes in erythropoiesis-stimulating agent responsiveness after transfer to combined therapy with peritoneal dialysis and hemodialysis for patients on peritoneal dialysis: A prospective multicenter study in Japan. Ther Apher Dial 2023. [PMID: 36897071 DOI: 10.1111/1744-9987.13981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/20/2023] [Accepted: 03/03/2023] [Indexed: 03/11/2023]
Abstract
INTRODUCTION Inadequate dialysis and fluid overload are corrected after starting combined therapy with peritoneal dialysis (PD) and hemodialysis (HD). However, the effects on anemia management has not been elucidated. METHODS We conducted a prospective, multicenter, observational cohort study of 40 PD patients (age, 60 ± 10 years; male, 88%; median PD duration, 28 months) starting combined therapy and investigated changes in several clinical parameters, including erythropoiesis-stimulating agent (ESA) resistance index (ERI). RESULTS ERI decreased significantly during 6 months after switching to combined therapy (from 11.8 [IQR 8.0-20.4] units/week/kg/(g/dL) to 7.8 [IQR 3.9-18.6] units/week/kg/(g/dL), p = 0.047). Body weight, urinary volume, serum creatinine and the dialysate-to-plasma creatinine ratio (D/P Cr) decreased, whereas hemoglobin and serum albumin increased. In subgroup analysis, the changes in ERI were not affected by cause for starting combined therapy, PD holiday and D/P Cr. CONCLUSION Although detailed mechanism was unclear, ESA responsiveness improved after switching from PD alone to combined therapy.
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Affiliation(s)
- Yukio Maruyama
- Division of Nephrology and Hypertension, Department of Internal Medicine, Tokyo, Japan
| | - Keitaro Yokoyama
- Division of Nephrology and Hypertension, Department of Internal Medicine, Tokyo, Japan
| | | | - Tsutomu Sanaka
- Center of CKD and Lifestyle Related Diseases, Edogawa Hospital, Ichikawa, Japan
| | - Yoshihide Tanaka
- Department of Nephrology, Toho University School of Medicine, Tokyo, Japan
| | - Ken Sakai
- Department of Nephrology, Toho University School of Medicine, Tokyo, Japan
| | - Yoshihiko Kanno
- Department of Nephrology, Tokyo Medical University, Tokyo, Japan
| | - Munekazu Ryuzaki
- Division of Nephrology, Tokyo Saiseikai Central Hospital, Tokyo, Japan
| | - Tsutomu Sakurada
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Tatsuo Hosoya
- Division of Nephrology and Hypertension, Department of Internal Medicine, Tokyo, Japan
| | - Masaaki Nakayama
- Department of Nephrology, St. Luke's International Hospital, Tokyo, Japan
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Perrone V, Veronesi C, Dovizio M, Ancona DD, Bartolini F, Ferrante F, Lupi A, Palcic S, Re D, Terlizzi AP, Ramirez de Arellano Serna A, Cogliati P, Degli Esposti L. The Influence of Iron-Deficiency Anaemia (IDA) Therapy on Clinical Outcomes and Healthcare Resource Consumptions in Chronic Kidney Disease Patients Affected by IDA: A Real-Word Evidence Study among the Italian Population. J Clin Med 2022; 11:jcm11195820. [PMID: 36233688 PMCID: PMC9573467 DOI: 10.3390/jcm11195820] [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: 09/01/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022] Open
Abstract
Anaemia is a uraemia-related complication frequently found in non-dialysis-dependent chronic kidney disease (ND-CKD) patients, with iron-deficiency anaemia (IDA) as the main underlying mechanism. Given the suboptimal anaemia management in ND-CKD patients with a co-diagnosis of IDA, this study evaluated the role of IDA therapy on clinical outcomes and healthcare resource consumptions in an Italian clinical setting. A retrospective observational real-world analysis was performed on administrative databases of healthcare entities, covering around 6.9 million health-assisted individuals. From January 2010 to March 2019, ND-CKD patients were included and diagnosed with IDA in the presence of two low-haemoglobin (Hb) measurements. Patients were divided into IDA-treated and untreated, based on the prescription of iron [Anatomical-Therapeutic Chemical (ATC) code B03A] or anti-anaemia preparations (ATC code B03X), and evaluated during a 6-month follow-up from the index date [first low haemoglobin (Hb) detection]. IDA treatment resulted in significantly decreased incidence of all cause-related, cardiovascular-related, and IDA-related hospitalizations (treated vs. untreated: 44.5% vs. 81.8%, 12.3% vs. 25.3%, and 16.2% vs. 26.2%, respectively, p < 0.001). A healthcare direct cost estimation showed that overall mean expenditure per patient reduced by 47% with IDA treatment (5245€ vs. 9918€, p < 0.001), mainly attributable to hospitalizations (3767€ vs. 8486€, p < 0.001). This real-life analysis on Italian ND-CKD-IDA patients indicates that IDA therapy administration provides significant benefits in terms of patients’ clinical outcomes and healthcare cost savings.
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Affiliation(s)
- Valentina Perrone
- CliCon Società Benefit S.r.l. Health, Economics & Outcomes Research, 40137 Bologna, Italy
| | - Chiara Veronesi
- CliCon Società Benefit S.r.l. Health, Economics & Outcomes Research, 40137 Bologna, Italy
| | - Melania Dovizio
- CliCon Società Benefit S.r.l. Health, Economics & Outcomes Research, 40137 Bologna, Italy
| | - Domenica Daniela Ancona
- Dipartimento Farmaceutico, Azienda Sanitaria Locale delle province di Barletta- Andria- Trani (BAT), 76125 Andria, Italy
| | - Fausto Bartolini
- Dipartimento Farmaceutico, Unità Sanitaria Locale Umbria 2, 05100 Terni, Italy
| | - Fulvio Ferrante
- Dipartimento della Diagnostica ed Assistenza Farmaceutica, ASL Frosinone, 03100 Frosinone, Italy
| | - Alessandro Lupi
- Azienda Sanitaria Locale del Verbano Cusio Ossola (VCO), 28887 Omegna, Italy
| | - Stefano Palcic
- Azienda Sanitaria Universitaria Integrata Giuliano-Isontina (ASUGI), 34148 Trieste, Italy
| | - Davide Re
- Dipartimento Assistenza Territoriale, Azienda Sanitaria Locale di Teramo, 64100 Teramo, Italy
| | - Annamaria Pia Terlizzi
- Dipartimento Farmaceutico, Azienda Sanitaria Locale delle province di Barletta- Andria- Trani (BAT), 76125 Andria, Italy
| | | | | | - Luca Degli Esposti
- CliCon Società Benefit S.r.l. Health, Economics & Outcomes Research, 40137 Bologna, Italy
- Correspondence:
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10
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Dennhardt S, Pirschel W, Wissuwa B, Imhof D, Daniel C, Kielstein JT, Hennig-Pauka I, Amann K, Gunzer F, Coldewey SM. Targeting the innate repair receptor axis via erythropoietin or pyroglutamate helix B surface peptide attenuates hemolytic-uremic syndrome in mice. Front Immunol 2022; 13:1010882. [PMID: 36211426 PMCID: PMC9537456 DOI: 10.3389/fimmu.2022.1010882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 08/30/2022] [Indexed: 11/30/2022] Open
Abstract
Hemolytic-uremic syndrome (HUS) can occur as a systemic complication of infections with Shiga toxin (Stx)-producing Escherichia coli and is characterized by microangiopathic hemolytic anemia and acute kidney injury. Hitherto, therapy has been limited to organ-supportive strategies. Erythropoietin (EPO) stimulates erythropoiesis and is approved for the treatment of certain forms of anemia, but not for HUS-associated hemolytic anemia. EPO and its non-hematopoietic analog pyroglutamate helix B surface peptide (pHBSP) have been shown to mediate tissue protection via an innate repair receptor (IRR) that is pharmacologically distinct from the erythropoiesis-mediating receptor (EPO-R). Here, we investigated the changes in endogenous EPO levels in patients with HUS and in piglets and mice subjected to preclinical HUS models. We found that endogenous EPO was elevated in plasma of humans, piglets, and mice with HUS, regardless of species and degree of anemia, suggesting that EPO signaling plays a role in HUS pathology. Therefore, we aimed to examine the therapeutic potential of EPO and pHBSP in mice with Stx-induced HUS. Administration of EPO or pHBSP improved 7-day survival and attenuated renal oxidative stress but did not significantly reduce renal dysfunction and injury in the employed model. pHBSP, but not EPO, attenuated renal nitrosative stress and reduced tubular dedifferentiation. In conclusion, targeting the EPO-R/IRR axis reduced mortality and renal oxidative stress in murine HUS without occurrence of thromboembolic complications or other adverse side effects. We therefore suggest that repurposing EPO for the treatment of patients with hemolytic anemia in HUS should be systematically investigated in future clinical trials.
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Affiliation(s)
- Sophie Dennhardt
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany
- Septomics Research Center, Jena University Hospital, Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Wiebke Pirschel
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany
- Septomics Research Center, Jena University Hospital, Jena, Germany
| | - Bianka Wissuwa
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany
- Septomics Research Center, Jena University Hospital, Jena, Germany
| | - Diana Imhof
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Christoph Daniel
- Department of Nephropathology, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Jan T. Kielstein
- Medical Clinic V, Nephrology | Rheumatology | Blood Purification, Academic Teaching Hospital Braunschweig, Braunschweig, Germany
| | - Isabel Hennig-Pauka
- Field Station for Epidemiology, University of Veterinary Medicine Hannover, Bakum, Germany
| | - Kerstin Amann
- Department of Nephropathology, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Florian Gunzer
- Department of Hospital Infection Control, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Sina M. Coldewey
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany
- Septomics Research Center, Jena University Hospital, Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
- *Correspondence: Sina M. Coldewey,
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11
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Parathyroidectomy Improves the Consumption of Erythropoiesis-Stimulating Agents in Hemodialysis Patients. Int J Mol Sci 2022; 23:ijms231810391. [PMID: 36142295 PMCID: PMC9499136 DOI: 10.3390/ijms231810391] [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: 08/04/2022] [Revised: 09/03/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Secondary hyperparathyroidism (SHPT) is common in end-stage renal disease (ESRD) patients, and it can suppress erythropoiesis. We aimed to investigate the relationship between the consumption of erythropoiesis-stimulating agents (ESAs) and parathyroidectomy (PTX) in ESRD patients with SHPT and to determine the predictors for anemia improvement. The current standard of chronic kidney disease anemia therapy relies on the prescription of iron supplementation, and ESA. We retrospectively analyzed 81 ESRD patients with PTX at Ditmanson Medical Foundation Chiayi Christian Hospital from July 2004 to Dec 2018. The requirement of ESA therapy markedly declined from a dose of 41.6 (interquartile range [IQR], 0−91.2) to 10.3 (IQR, 0−59.5, p = 0.001) unit/kg/week. In addition, 63.7% of patients required iron replacement therapy preoperatively and the proportion reduced to 52.5% after PTX (p < 0.001). The hemoglobin (Hb) level showed an insignificant change from a median value of 10.7 g/dL (9.5−11.6 g/dL) before PTX to 10.5 g/dL (9.6−11.2 g/dL) at 6 months after PTX. A preoperative Hb level ≤ 10 mg/dL (odds ratio [OR], 20.1; 95% confidence interval [CI], 4.71−125, p < 0.001) and transferrin saturation (TSAT) < 25% (OR, 12.8; 95% CI, 2.51−129, p < 0.001) were predictors for anemia improvement. Our study demonstrated that PTX markedly decreased the requirement of ESA. Patients with a low preoperative Hb level or low TSAT showed an increase in the Hb level after PTX. PTX may be considered not only for SHPT with refractory anemia but also for high ESA-dependent patients.
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12
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Tonelli M, Thadhani R. Anaemia in chronic kidney disease: what do new generation agents offer? Lancet 2022; 399:702-703. [PMID: 35090603 DOI: 10.1016/s0140-6736(22)00120-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/06/2022] [Indexed: 12/17/2022]
Affiliation(s)
- Marcello Tonelli
- Department of Medicine, University of Calgary, Calgary T2N 4Z6, AB, Canada.
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13
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Wittbrodt ET, James G, Kumar S, van Haalen H, Chen H, Sloand JA, Kalantar-Zadeh K. Contemporary outcomes of anemia in US patients with chronic kidney disease. Clin Kidney J 2022; 15:244-252. [PMID: 35145639 PMCID: PMC8824810 DOI: 10.1093/ckj/sfab195] [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: 05/12/2021] [Indexed: 12/20/2022] Open
Abstract
Background Long-term clinical outcome data from patients with non-dialysis-dependent (NDD) chronic kidney disease (CKD) are lacking. We characterized patients with NDD-CKD and anemia using real-world data from the USA. Methods This retrospective longitudinal observational study evaluated integrated Limited Claims and Electronic Health Record Data (IBM Health, Armonk, NY), including patients ≥18 years with two or more estimated glomerular filtration rate (eGFR) measures <60 mL/min/1.73 m2 ≥90 days apart. Anemia was defined as the first observed hemoglobin <10 g/dL within 6-month pre- and post-CKD index date. Data were analyzed from January 2012 to June 2018. Patients with documented iron-deficiency anemia at baseline were excluded. Results Comprising 22 720 patients (57.4% female, 63.9% CKD stage 3, median hemoglobin 12.5 g/dL), median (interquartile range) follow-up for patients with and without anemia were 2.9 (1.5-4.4) and 3.8 (2.2-4.8) years, respectively. The most prevalent comorbidities were dyslipidemia (57.6%), type 2 diabetes mellitus (38.8%) and uncontrolled hypertension (20.0%). Overall, 23.3% of patients had anemia, of whom 1.9% and <0.1% received erythropoiesis-stimulating agents (ESAs) or intravenous iron, respectively. Anemia prevalence increased with CKD stage from 18.2% (stage 3a) to 72.8% (stage 5). Patients with anemia had a higher incidence rate of hospitalizations for heart failure (1.6 versus 0.8 per 100 patient-years), CKD stage advancement (43.5 versus 27.5 per 100 patient-years), and a 40% eGFR decrease (18.1 versus 7.3 per 100 patient-years) versus those without anemia. Conclusions Anemia, frequently observed in NDD-CKD and associated with adverse clinical outcomes, is rarely treated with ESAs and intravenous iron. These data suggest that opportunities exist for improved anemia management in patients with NDD-CKD.
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Affiliation(s)
| | - Glen James
- AstraZeneca, Biopharmaceuticals Medical, Cambridge, UK
| | - Supriya Kumar
- AstraZeneca, Biopharmaceuticals Medical, Gaithersburg, MD, USA
| | | | - Hungta Chen
- AstraZeneca, Biopharmaceuticals Medical, Gaithersburg, MD, USA
| | - James A Sloand
- AstraZeneca, Biopharmaceuticals Medical, Gaithersburg, MD, USA
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14
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Chuengsaman P, Narenpitak S, Sritippayawan S. Efficacy and safety of recombinant human erythropoietin (Hema-Plus ®) for management of anemia in Thai patients on peritoneal dialysis. World J Nephrol 2021; 10:109-121. [PMID: 34909408 PMCID: PMC8641037 DOI: 10.5527/wjn.v10.i6.109] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 08/19/2021] [Accepted: 09/17/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hema-Plus, a recombinant human erythropoietin (rHuEPO) or epoetin alfa has shown effectiveness in correction of anemia in Thai population in clinical practice. This study was aimed to demonstrate efficacy and safety under the evidence-based approach.
AIM To evaluate the efficacy and safety of rHuEPO (Hema-Plus) for treatment of anemia over 12 wk in Thai patients with Stage V chronic kidney disease (CKD) on peritoneal dialysis (PD).
METHODS This study was an open-label, multi-center study to enroll 30 CKD patients identified to start PD with hemoglobin (Hb) less than 9.5 g/dL, serum ferritin more than 100 ng/mL, serum transferrin saturation more than or equal to 20% and who had not previously received epoetin. Patients with conditions that could increase the risk of adverse effects from study participation or interfere with study outcomes, were using concomitant androgens or had secondary hyperparathyroidism were excluded. All eligible patients started Hema-Plus by SC injection at 4000 IU once or twice weekly (week 0) and with follow-up at weeks 2, 4, 8, and 12. Dosage adjustment could be done to achieve Hb level of 11-12 g/dL. Primary end point was mean change in Hb level from baseline to end of treatment (week 12). Safety was assessed throughout the study. Quality of life (QoL) was assessed using KDQOL-36.
RESULTS All 30 enrolled patients completed the study. Mean (standard deviation) Hb at baseline (week 0) to the end of 12 wk was significantly increased from 7.39 (1.29) g/dL to 11.15 (1.73) g/dL (paired t-test, P value < 0.001). Overall change of Hb means from baseline over the other 4 visits was statistically significantly increased (repeated measure ANOVA, P value < 0.001). Ten out of 39 adverse events (AEs) were serious. Two serious AEs were probably related to study medication by investigators’ assessment. At week 12, the QoL scores in all domains were significantly increased from baseline.
CONCLUSION Hema-Plus administered for 12 wk for treatment of anemia in patients on PD effectively increased Hb levels with acceptable safety profile.
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Affiliation(s)
- Piyatida Chuengsaman
- Banphaeo Dialysis Group, Banphaeo Hospital (Public Organization), Banphaeo 74120, Samutsakhon, Thailand
| | | | - Suchai Sritippayawan
- Department of Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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15
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Ishimitsu A, Satonaka H, Furuichi M, Murayama Y, Tojo A, Ishimitsu T. Role of circulating endothelial progenitors in responsiveness to erythropoiesis-stimulating agents in hemodialysis patients. RENAL REPLACEMENT THERAPY 2021. [DOI: 10.1186/s41100-021-00374-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Though treatment of anemia in chronic kidney disease (CKD) patients has been improved remarkably by erythropoiesis-stimulating agents (ESA), hypo-responsiveness to ESA poses a persistent problem in a subgroup of CKD patients, especially those on dialysis, with deteriorated mortality or cardiovascular risks. Pathomechanism of this condition including cardiovascular implications has not been sufficiently investigated.
Methods
Clinical parameters of 101 chronic hemodialysis patients which included those hospitalized in our university hospital were examined cross-sectionally. As a marker estimating ESA hypo-responsiveness, erythropoietin resistance index (ERI) was calculated. Numbers of circulating endothelial progenitor cells (EPC) were measured by flow cytometry. Associations among values were analyzed by methods including multiple linear regression.
Results
Majority (93%) of the subjects were hospitalized patients with various comorbidities. ERI (18.4 [7.2–33.0] IU/week/kg/g/dL) and ESA dose (161.6 [75.0–320.9] IU/week/kg) of all the subjects were relatively high. Factors negatively correlated with EPC included age, HD vintage, CRP, pulse rate, ESA dose and ERI, while male sex and systolic blood pressure were positively correlated. By multiple linear regression analysis, age, sex and ERI (standardized coefficient beta − 0.202, p = 0.039) remained as the independently predicting factors of EPC (log CD133/Flk1+ EPC). Darbepoetin alpha was used in 65 patients, especially predominant when requiring higher ESA doses, but by correlation or multivariable analyses, this did not substantially modify the negative association between ERI and EPC.
Conclusions
ERI was independently associated with EPC paucity in a cohort with various comorbidities. This may suggest a link which connects ESA hypo-responsiveness to compromised cardiovascular prognosis of dialysis patients.
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16
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Au EH, Wong G, Howard K, Chapman JR, Castells A, Roger SD, Bourke MJ, Macaskill P, Turner R, Lim WH, Lok CE, Diekmann F, Cross N, Sen S, Allen RD, Chadban SJ, Pollock CA, Tong A, Teixeira-Pinto A, Yang JY, Kieu A, James L, Craig JC. Factors Associated With Advanced Colorectal Neoplasia in Patients With CKD. Am J Kidney Dis 2021; 79:549-560. [PMID: 34461168 DOI: 10.1053/j.ajkd.2021.07.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 07/16/2021] [Indexed: 12/19/2022]
Abstract
RATIONALE & OBJECTIVE The risk of developing colorectal cancer in patients with chronic kidney disease (CKD) is twice that of the general population, but the factors associated with colorectal cancer are poorly understood. The aim of this study was to identify factors associated with advanced colorectal neoplasia in patients with CKD. STUDY DESIGN Prospective cohort study. SETTING & PARTICIPANTS Patients with CKD stages 3-5, including those treated with maintenance dialysis or transplantation across 11 sites in Australia, New Zealand, Canada, and Spain, were screened for colorectal neoplasia using a fecal immunochemical test (FIT) as part of the Detecting Bowel Cancer in CKD (DETECT) Study. EXPOSURE Baseline characteristics for patients at the time of study enrollment were ascertained, including duration of CKD, comorbidities, and medications. OUTCOME Advanced colorectal neoplasia was identified through a 2-step verification process with colonoscopy following positive FIT and 2-year clinical follow-up for all patients. ANALYTICAL APPROACH Potential factors associated with advanced colorectal neoplasia were explored using multivariable logistic regression. Sensitivity analyses were performed using grouped LASSO (least absolute shrinkage and selection operator) logistic regression. RESULTS Among 1,706 patients who received FIT-based screening-791 with CKD stages 3-5 not receiving kidney replacement therapy (KRT), 418 receiving dialysis, and 497 patients with a functioning kidney transplant-117 patients (6.9%) were detected to have advanced colorectal neoplasia (54 with CKD stages 3-5 without KRT, 34 receiving dialysis, and 29 transplant recipients), including 9 colorectal cancers. The factors found to be associated with advanced colorectal neoplasia included older age (OR per year older, 1.05 [95% CI, 1.03-1.07], P<0.001), male sex (OR, 2.27 [95% CI, 1.45-3.54], P<0.001), azathioprine use (OR, 2.99 [95% CI, 1.40-6.37], P=0.005), and erythropoiesis-stimulating agent use (OR, 1.92 [95% CI, 1.22-3.03], P=0.005). Grouped LASSO logistic regression revealed similar associations between these factors and advanced colorectal neoplasia. LIMITATIONS Unmeasured confounding factors. CONCLUSIONS Older age, male sex, erythropoiesis-stimulating agents, and azathioprine were found to be significantly associated with advanced colorectal neoplasia in patients with CKD.
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Affiliation(s)
- Eric H Au
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia; Centre for Transplant and Renal Research, Westmead Hospital, Westmead, Australia.
| | - Germaine Wong
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia; Centre for Transplant and Renal Research, Westmead Hospital, Westmead, Australia
| | - Kirsten Howard
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Jeremy R Chapman
- Centre for Transplant and Renal Research, Westmead Hospital, Westmead, Australia
| | - Antoni Castells
- Gastroenterology Department, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Simon D Roger
- Department of Renal Medicine, Gosford Hospital, Gosford, Australia
| | - Michael J Bourke
- Department of Gastroenterology, Westmead Hospital, Westmead, Australia
| | - Petra Macaskill
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Robin Turner
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Biostatistics Unit, Dunedin School of Medicine, Otago University, Christchurch, New Zealand
| | - Wai H Lim
- Department of Renal Medicine, Sir Charles Gairdner Hospital, Perth, Australia
| | - Charmaine E Lok
- Department of Medicine, University Health Network-Toronto General Hospital, Toronto, Ontario, Canada
| | - Fritz Diekmann
- Department of Nephrology and Kidney Transplantation, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Nicholas Cross
- Department of Nephrology and Kidney Transplantation, Christchurch Hospital, Otago University, Christchurch, New Zealand
| | - Shaundeep Sen
- Department of Renal Medicine, Concord Repatriation General Hospital, Concord, Australia
| | - Richard D Allen
- Department of Renal Medicine, Royal Prince Alfred Hospital, and Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Steven J Chadban
- Department of Renal Medicine, Royal Prince Alfred Hospital, and Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Carol A Pollock
- Department of Medicine, Northern Clinical School, Kolling Institute of Medical Research, Sydney, Australia
| | - Allison Tong
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Armando Teixeira-Pinto
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Jean Y Yang
- School of Mathematics and Statistics, University of Sydney, Sydney, Australia
| | - Anh Kieu
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Laura James
- Sydney School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, Australia; Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Jonathan C Craig
- College of Medicine and Public Health, Flinders University, Adelaide, Australia
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17
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Cai KD, Zhu BX, Lin HX, Luo Q. Successful application of roxadustat in the treatment of patients with anti-erythropoietin antibody-mediated renal anaemia: a case report and literature review. J Int Med Res 2021; 49:3000605211005984. [PMID: 33853432 PMCID: PMC8054214 DOI: 10.1177/03000605211005984] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Recombinant human erythropoietin (rHuEPO) has been used worldwide for treatment of renal
anaemia due to its good curative effect. However, rHuEPO treatment is associated with a
rare but severe complication because of the development of anti-EPO antibodies, which are
difficult to treat. Currently, the main treatments for the anti-EPO antibodies include
withdrawing the rHuEPO, providing blood transfusions and administrating steroid-based
immunosuppressive agents. Although the above methods can alleviate anti-EPO-related
anaemia, there are obvious side-effects such as decreased immunity and an increased risk
of infection. Therefore, accurately identifying anti-EPO-related anaemia and effectively
treating this complication is worth exploring. This current case report describes a
49-year-old female patient with chronic kidney disease that received rHuEPO subcutaneously
and then developed anti-EPO antibody-mediated renal anaemia with her haemoglobin levels
dropping to 37 g/l. The patient refused to be treated with steroids, so she received 120
mg roxadustat administered orally every 72 h and her Hb level increased to 110 g/l over a
few months. This current case report demonstrates that roxadustat can be used to
successfully treat anti-EPO antibody-mediated renal anaemia without the use of
steroid-based immunosuppressants.
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Affiliation(s)
- Ke-Dan Cai
- Department of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang Province, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, Zhejiang Province, China
| | - Bei-Xia Zhu
- Department of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang Province, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, Zhejiang Province, China
| | - Hai-Xue Lin
- Department of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang Province, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, Zhejiang Province, China
| | - Qun Luo
- Department of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang Province, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, Zhejiang Province, China
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18
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Hodson EM, Strippoli GFM. Long- or short-acting erythropoiesis-stimulating agents: take no shortcuts in their evaluation. Nephrol Dial Transplant 2021; 36:205-207. [PMID: 32582928 DOI: 10.1093/ndt/gfaa118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 04/23/2020] [Indexed: 11/14/2022] Open
Affiliation(s)
- Elisabeth M Hodson
- Cochrane Kidney and Transplant, Centre for Kidney Research, Children's Hospital at Westmead, Westmead, NSW, Australia
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19
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A real-world longitudinal study of anemia management in non-dialysis-dependent chronic kidney disease patients: a multinational analysis of CKDopps. Sci Rep 2021; 11:1784. [PMID: 33469061 PMCID: PMC7815803 DOI: 10.1038/s41598-020-79254-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/30/2020] [Indexed: 02/07/2023] Open
Abstract
Previously lacking in the literature, we describe longitudinal patterns of anemia prescriptions for non-dialysis-dependent chronic kidney disease (NDD-CKD) patients under nephrologist care. We analyzed data from 2818 Stage 3-5 NDD-CKD patients from Brazil, Germany, and the US, naïve to anemia medications (oral iron, intravenous [IV] iron, or erythropoiesis stimulating agent [ESA]) at enrollment in the CKDopps. We report the cumulative incidence function (CIF) of medication initiation stratified by baseline characteristics. Even in patients with hemoglobin (Hb) < 10 g/dL, the CIF at 12 months for any anemia medication was 40%, and 28% for ESAs. Patients with TSAT < 20% had a CIF of 26% and 6% for oral and IV iron, respectively. Heart failure was associated with earlier initiation of anemia medications. IV iron was prescribed to < 10% of patients with iron deficiency. Only 40% of patients with Hb < 10 g/dL received any anemia medication within a year. Discontinuation of anemia treatment was very common. Anemia treatment is initiated in a limited number of NDD-CKD patients, even in those with guideline-based indications to treat. Hemoglobin trajectory and a history of heart failure appear to guide treatment start. These results support the concept that anemia is sub-optimally managed among NDD-CKD patients in the real-world setting.
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20
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Lobo B, Abdel-Rahman E, Brown D, Dunn L, Bowman B. A recurrent neural network approach to predicting hemoglobin trajectories in patients with End-Stage Renal Disease. Artif Intell Med 2020; 104:101823. [PMID: 32499002 DOI: 10.1016/j.artmed.2020.101823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 12/30/2019] [Accepted: 02/17/2020] [Indexed: 12/20/2022]
Abstract
The most severe form of kidney disease, End-Stage Renal Disease (ESRD) is treated with various forms of dialysis - artificial blood cleansing. Dialysis patients suffer many health burdens including high mortality and hospitalization rates, and symptomatic anemia: a low red blood cell count as indicated by a low hemoglobin (Hgb) level. ESRD-induced anemia is treated, with variable patient response, by erythropoiesis stimulating agents (ESAs): expensive injectable medications typically administered during dialysis sessions. The dosing protocol is typically a population level protocol based on original clinical trials, the use of which often results in Hgb cycling. This cycling phenomenon occurs primarily due to the mismatch in the time between dosing decisions and the time it takes for the effects of a dosing change to be fully realized. In this paper we develop a recurrent neural network approach that uses historic data together with future ESA and iron dosing data to predict the 1, 2, and 3 month Hgb levels of patients with ESRD-induced anemia. The results of extensive experimentation indicate that this approach generates predictions that are clinically relevant: the mean absolute error of the predictions is comparable to estimates of the intra-individual variability of the laboratory test for Hgb.
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Affiliation(s)
- Benjamin Lobo
- Department of Systems & Information Engineering, University of Virginia, Charlottesville, VA 22904, United States
| | - Emaad Abdel-Rahman
- Division of Nephrology, Department of Medicine, University of Virginia, Charlottesville, VA 22908, United States
| | - Donald Brown
- Department of Systems & Information Engineering, University of Virginia, Charlottesville, VA 22904, United States
| | - Lori Dunn
- Medical Center - Pharmacy, University of Virginia, Charlottesville, VA 22908, United States
| | - Brendan Bowman
- Division of Nephrology, Department of Medicine, University of Virginia, Charlottesville, VA 22908, United States
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The Influence of Inflammation on Anemia in CKD Patients. Int J Mol Sci 2020; 21:ijms21030725. [PMID: 31979104 PMCID: PMC7036805 DOI: 10.3390/ijms21030725] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/15/2020] [Accepted: 01/19/2020] [Indexed: 02/06/2023] Open
Abstract
Anemia is frequently observed in the course of chronic kidney disease (CKD) and it is associated with diminishing the quality of a patient’s life. It also enhances morbidity and mortality and hastens the CKD progression rate. Patients with CKD frequently suffer from a chronic inflammatory state which is related to a vast range of underlying factors. The results of studies have demonstrated that persistent inflammation may contribute to the variability in Hb levels and hyporesponsiveness to erythropoietin stimulating agents (ESA), which are frequently observed in CKD patients. The understanding of the impact of inflammatory cytokines on erythropoietin production and hepcidin synthesis will enable one to unravel the net of interactions of multiple factors involved in the pathogenesis of the anemia of chronic disease. It seems that anti-cytokine and anti-oxidative treatment strategies may be the future of pharmacological interventions aiming at the treatment of inflammation-associated hyporesponsiveness to ESA. The discovery of new therapeutic approaches towards the treatment of anemia in CKD patients has become highly awaited. The treatment of anemia with erythropoietin (EPO) was associated with great benefits for some patients but not all.
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Anemia of Inflammation with An Emphasis on Chronic Kidney Disease. Nutrients 2019; 11:nu11102424. [PMID: 31614529 PMCID: PMC6835368 DOI: 10.3390/nu11102424] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/29/2019] [Accepted: 09/30/2019] [Indexed: 01/28/2023] Open
Abstract
Iron is vital for a vast variety of cellular processes and its homeostasis is strictly controlled and regulated. Nevertheless, disorders of iron metabolism are diverse and can be caused by insufficiency, overload or iron mal-distribution in tissues. Iron deficiency (ID) progresses to iron-deficiency anemia (IDA) after iron stores are depleted. Inflammation is of diverse etiology in anemia of chronic disease (ACD). It results in serum hypoferremia and tissue hyperferritinemia, which are caused by elevated serum hepcidin levels, and this underlies the onset of functional iron-deficiency anemia. Inflammation is also inhibitory to erythropoietin function and may directly increase hepcidin level, which influences iron metabolism. Consequently, immune responses orchestrate iron metabolism, aggravate iron sequestration and, ultimately, impair the processes of erythropoiesis. Hence, functional iron-deficiency anemia is a risk factor for several ailments, disorders and diseases. Therefore, therapeutic strategies depend on the symptoms, severity, comorbidities and the associated risk factors of anemia. Oral iron supplements can be employed to treat ID and mild anemia particularly, when gastrointestinal intolerance is minimal. Intravenous (IV) iron is the option in moderate and severe anemic conditions, for patients with compromised intestinal integrity, or when oral iron is refractory. Erythropoietin (EPO) is used to treat functional iron deficiency, and blood transfusion is restricted to refractory patients or in life-threatening emergency situations. Despite these interventions, many patients remain anemic and do not respond to conventional treatment approaches. However, various novel therapies are being developed to treat persistent anemia in patients.
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Yang H, Juang SY, Liao KF, Chen YH. Comparing the Effect of Folic Acid and Pentoxifylline on Delaying Dialysis Initiation in Patients with Advanced Chronic Kidney Disease. Nutrients 2019; 11:nu11092192. [PMID: 31547288 PMCID: PMC6769878 DOI: 10.3390/nu11092192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/04/2019] [Accepted: 09/07/2019] [Indexed: 11/17/2022] Open
Abstract
Background: We hypothesized that the nutrient loss and chronic inflammation status may stimulate progression in advanced chronic kidney disease. Therefore, we aimed to generate a study to state the influence of combined nutritional and anti-inflammatory interventions. Methods: The registry from the National Health Insurance Research Database in Taiwan was searched for 20–90 years individuals who had certified end-stage renal disease. From January 2005 through December 2010, the diagnosis code ICD-9 585 (chronic kidney disease, CKD) plus erythropoiesis-stimulating agent (ESA) use was defined as entering advanced chronic kidney disease. The ESA starting date was defined as the first index date, whereas the initiation day of maintenance dialysis was defined as the second index date. The duration between the index dates was analyzed in different medical treatments. Results: There were 10,954 patients analyzed. The combination therapy resulted in the longest duration (n = 2184, median 145 days, p < 0.001) before the dialysis initiation compared with folic acid (n = 5073, median 111 days), pentoxifylline (n = 1119, median 102 days, p = 0.654), and no drug group (control, n = 2578, median 89 days, p < 0.001). Lacking eGFR data and the retrospective nature are important limitations. Conclusions: In patients with advanced CKD on the ESA treatment, the combination of folic acid and pentoxifylline was associated with delayed initiation of hemodialysis.
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Affiliation(s)
- Hsun Yang
- Department of Nephrology, Department of Internal Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan.
| | - Shiun-Yang Juang
- Department of Medical Research, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan.
| | - Kuan-Fu Liao
- Division of Gastroenterology, Department of Internal Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan.
- School of Medicine, Tzu Chi University, Hualien 970, Taiwan.
- Graduate Institute of Integrated Medicine, China Medical University, Taichung 404, Taiwan.
| | - Yi-Hsin Chen
- Department of Nephrology, Department of Internal Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan.
- School of Medicine, Tzu Chi University, Hualien 970, Taiwan.
- Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei 112, Taiwan.
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Relationship between anti-erythropoietin receptor autoantibodies and responsiveness to erythropoiesis-stimulating agents in patients on hemodialysis: a multi-center cross-sectional study. Clin Exp Nephrol 2019; 24:88-95. [PMID: 31502102 DOI: 10.1007/s10157-019-01787-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 08/27/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND A decreased response to erythropoiesis-stimulating agents (ESAs) leads to refractory anemia and worse prognosis in patients with chronic kidney disease. We examined the association between autoantibodies to the erythropoietin receptor (EPOR) and responsiveness to ESAs in patients on maintenance hemodialysis. METHODS A total of 108 Japanese patients on maintenance hemodialysis at three institutions were enrolled. Sera from these patients were screened for anti-EPOR antibodies using an enzyme-linked immunosorbent assay. An ESA resistance index (ERI) was calculated, and patients in the highest ERI quartile were defined as ESA hyporesponsive. RESULTS Anti-EPOR antibodies were detected in 11 patients (10%). Body mass index and hemoglobin, platelet, magnesium, and ferritin levels decreased with higher ERI levels. On the other hand, C-reactive protein (CRP) levels and the prevalence of anti-EPOR antibodies increased with higher ERI levels. In multivariate analysis, the presence of anti-EPOR antibodies together with CRP was a significant risk factor for ESA hyporesponsiveness. CONCLUSIONS Anti-EPOR antibodies were detected in patients on maintenance hemodialysis, and these autoantibodies were independent factors for hyporesponsiveness to ESAs in these patients.
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Davani-Davari D, Karimzadeh I, Khalili H. The potential effects of anabolic-androgenic steroids and growth hormone as commonly used sport supplements on the kidney: a systematic review. BMC Nephrol 2019; 20:198. [PMID: 31151420 PMCID: PMC6545019 DOI: 10.1186/s12882-019-1384-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 05/15/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Anabolic-androgenic steroids and growth hormone are among the most commonly used supplements by sportsmen and sportswomen. The aim of this systematic review is to collect and report available data about renal safety of anabolic-androgenic steroids and growth hormone (GH). METHODS The search strategy was in accordance with the PRISMA guideline. Seven databases such as Scopus, Medline, Embase, and ISI Web of Knowledge were searched using keywords, such as "growth hormone", "anabolic-androgenic steroids", and "kidney injury". Articles published from 1950 to December 2017 were considered. Randomized clinical trials, prospective or retrospective human studies, case series as well as case reports, and experimental (in vivo) studies were included. Twenty one clinical and experimental articles were selected (12 for anabolic-androgenic steroids and 9 for GH). RESULTS Anabolic-androgenic steroids can affect the kidney in different aspects. They can induce or aggravate acute kidney injury, chronic kidney disease, and glomerular toxicity. These adverse effects are mediated through pathways such as stimulating renin-angiotensin-aldosterone system, enhancing the production of endothelin, producing reactive oxygen species, over-expression of pro-fibrotic and pro-apoptotic mediators (e.g., TGF-β1), as well as inflammatory cytokines (e.g., TNF-α, IL-1b, and IL-6). Although GH may affect the kidney in different aspects, such as size, glomerular filtration rate, and tubule functions, either directly or indirectly, there is no conclusive clinical evidence about its detrimental effects on the kidney in athletes and body builders. CONCLUSION Evidence regarding effects of anabolic-androgenic steroids exists; However, GH's exact effect on the kidney at doses used by athletes and body builders has not yet been clarified. Cohort clinical studies with long-term follow-up are warranted in this regard.
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Affiliation(s)
- Dorna Davani-Davari
- Department of Clinical Pharmacy, Faculty of Pharmacy, Shiraz University of Medical Sciences, Karafarin street, P O Box: 7146864685, Shiraz, Iran
| | - Iman Karimzadeh
- Department of Clinical Pharmacy, Faculty of Pharmacy, Shiraz University of Medical Sciences, Karafarin street, P O Box: 7146864685, Shiraz, Iran
| | - Hossein Khalili
- Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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D'Costa MR, Winkler NS, Milliner DS, Norby SM, Hickson LJ, Lieske JC. Oxalosis Associated With High-Dose Vitamin C Ingestion in a Peritoneal Dialysis Patient. Am J Kidney Dis 2019; 74:417-420. [PMID: 30910370 DOI: 10.1053/j.ajkd.2019.01.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 01/18/2019] [Indexed: 01/15/2023]
Abstract
We report a case of systemic oxalosis involving the eyes and joints due to long-term use of high-dose vitamin C in a patient receiving maintenance peritoneal dialysis (PD). This 76-year-old woman with autosomal dominant polycystic kidney disease underwent living unrelated kidney transplantation 10 years earlier. The transplant failed 6 months before presentation, and she initiated hemodialysis therapy before transitioning to PD therapy 4 months later. During the month before presentation, the patient noted worsening arthralgias and decreased vision. Ophthalmologic examination revealed proliferative retinopathy and calcium oxalate crystals. Plasma oxalate level was markedly elevated at 187 (reference range, <1.7) μmol/L, and urine oxalate-creatinine ratio was high (0.18mg/mg). The patient reported taking up to 4g of vitamin C per day for several years. Workup for causes of primary and secondary hyperoxaluria was otherwise negative. Vitamin C use was discontinued, and the patient transitioned to daily hemodialysis for 2 weeks. Plasma oxalate level before the dialysis session decreased but remained higher (30-53μmol/L) than typical for dialysis patients. Upon discharge, the patient remained on thrice-weekly hemodialysis therapy with stabilized vision and improved joint symptoms. This case highlights the risk of high-dose vitamin C use in patients with advanced chronic kidney disease, especially when maintained on PD therapy.
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Affiliation(s)
| | | | - Dawn S Milliner
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN; The Rare Kidney Stone Consortium, Mayo Clinic, Rochester, MN
| | - Suzanne M Norby
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | | | - John C Lieske
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN; The Rare Kidney Stone Consortium, Mayo Clinic, Rochester, MN; Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.
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Thadhani R, Guilatco R, Hymes J, Maddux FW, Ahuja A. Switching from Epoetin Alfa (Epogen®) to Epoetin Alfa-Epbx (RetacritTM) Using a Specified Dosing Algorithm: A Randomized, Non-Inferiority Study in Adults on Hemodialysis. Am J Nephrol 2018; 48:214-224. [PMID: 30196301 PMCID: PMC6214608 DOI: 10.1159/000492621] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 08/01/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND For patients with anemia undergoing hemodialysis, erythropoiesis-stimulating agents (ESAs) are typically dosed via precise algorithms. Using one such algorithm, we assessed the maintenance of hemoglobin levels in patients switched from epoetin alfa reference product (Epogen®) to epoetin alfa-epbx (RetacritTM; a biosimilar to US-licensed Epogen®/Procrit®). METHODS This randomized, open-label, non-inferiority study was conducted at Fresenius Medical Care North America (FMCNA) hemodialysis centers. Patients with anemia and chronic kidney disease undergoing maintenance hemodialysis and receiving routine intravenous (IV) Epogen® were randomized 1: 1 to switch to IV RetacritTM or continue standard-of-care (Epogen®) for 24 weeks, using analogous versions of the FMCNA ESA-dosing algorithm. The primary endpoint was the proportion of time patients' hemoglobin was 9-11 g/dL during weeks 17-24. RESULTS Of 432 randomized patients, 418 received treatment (RetacritTM, n = 212; standard-of-care, n = 206) and comprised the full analysis set. A similar proportion of patients discontinued from each arm. The proportion of time patients' hemoglobin was within the target range was 61.9% (95% CI 57.5-66.2) in the RetacritTM arm and 63.3% (95% CI 58.7-67.7) in the standard-of-care arm. The difference in proportions between treatment arms was -1.4% (95% CI -7.6 to 4.9), and the lower bound of the confidence interval was within the pre-specified non-inferiority margin of -12.5%. There was no statistically significant difference between arms in the mean change from baseline in the weekly mean ESA dose during weeks 17-24, and no clinically relevant differences in safety outcomes. CONCLUSIONS Switching to RetacritTM was non-inferior to continuing -Epogen® in maintaining hemoglobin levels in patients receiving hemodialysis, when both ESAs were dosed using a specified algorithm (ClinicalTrials.gov, NCT02504294).
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Affiliation(s)
- Ravi Thadhani
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
- Division of Nephrology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Ruffy Guilatco
- Pfizer Essential Health, Clinical Development and Medical Affairs, Pfizer Inc., Makati City, Philippines
| | - Jeffrey Hymes
- Fresenius Medical Care North America, Waltham, Massachusetts, USA
| | | | - Ajay Ahuja
- Pfizer Essential Health, Clinical Development and Medical Affairs, Pfizer Inc., Lake Forest, Illinois, USA
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Goldsmith D, Dellanna F, Schiestl M, Krendyukov A, Combe C. Epoetin Biosimilars in the Treatment of Renal Anemia: What Have We Learned from a Decade of European Experience? Clin Drug Investig 2018; 38:481-490. [PMID: 29500617 PMCID: PMC5951862 DOI: 10.1007/s40261-018-0637-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Biosimilars are biological medicines that are approved via stringently defined regulatory pathways on the basis that comparable safety, efficacy, and quality have been demonstrated to their reference medicine. The advantage of biosimilar drugs is that they may be less expensive than the reference medicine, allowing for greater patient access and cost savings in already stretched healthcare budgets. Biosimilar epoetins have been available in Europe for a decade. Complementing in vitro and preclinical characterization, and pharmacokinetic/pharmacodynamic studies, clinical trials provided the additional data needed to reassure European authorities that biosimilar epoetins were sufficiently similar to the reference epoetin to warrant approval. Post-approval, real-world studies have provided further evidence that biosimilar epoetins are an effective and well-tolerated option for the treatment of renal anemia, with ongoing pharmacovigilance and observational studies monitoring for any unexpected long-term signals that have not been identified in clinical development studies. As the evidence and experience with these products increase, many of the initial concerns are being alleviated. Nephrologists can be increasingly confident that European Medicines Agency-approved biosimilars offer high-quality, affordable, effective alternatives to existing reference medicines used to treat renal anemia, and may help yield cost savings and improve patient access.
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Affiliation(s)
- David Goldsmith
- Division of Nephrology, Guy's and St. Thomas' Hospitals, London, UK
| | | | - Martin Schiestl
- Sandoz Biopharmaceuticals, Sandoz International GmbH, Kundl, Austria
| | - Andriy Krendyukov
- Hematology/Nephrology, Sandoz Biopharmaceuticals, Hexal AG, Industriestr. 25, 83607, Holzkirchen, Germany.
| | - Christian Combe
- Service de Néphrologie Transplantation Dialyse Aphérèse, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France.,Université de Bordeaux, INSERM 1026, Bordeaux, France
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Cunha GJL, Rocha BML, Menezes Falcão L. Iron deficiency in chronic and acute heart failure: A contemporary review on intertwined conditions. Eur J Intern Med 2018; 52:1-7. [PMID: 29680173 DOI: 10.1016/j.ejim.2018.04.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/11/2018] [Accepted: 04/12/2018] [Indexed: 12/13/2022]
Abstract
Iron Deficiency (ID) is increasingly recognized as a prevalent comorbid condition in Heart Failure (HF). Despite this, the pathophysiological mechanisms for progressive ID in either chronic or acute HF are still poorly understood. Beyond the traditional factors for iron deficit in the general population, we ought to review the specificities of such paucity in the HF patient, particularly focusing on the interplay between heightened inflammation, overactivity of the sympathetic nervous system and the so-called cardio-renal-anaemia-ID syndrome. Currently, ID constitutes not only an independent prognostic marker but also a novel safe therapeutic target. Particularly, in selected stable HF patients with reduced left ventricular ejection fraction, intravenous (IV) iron improves symptomatic burden and reduces hospitalizations due to worsening HF. On this topic, the main trials of IV iron with either iron sucrose (Toblli et al., FERRIC-HF and IRON-HF) or ferric carboxymaltose (FAIR-HF, CONFIRM-HF and EFFECT-HF) will be summarized and discussed. Finally, we debate the gaps in knowledge of ID in special populations, namely the unreliability of routine plasmatic surrogate markers to assess iron status in acute and advanced HF, the challenging patient with both HF and Chronic Kidney Disease, as well as efficacy and safety concerns in these settings and the potential role of iron correction in cardiac resynchronization therapy candidates.
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Affiliation(s)
| | | | - Luiz Menezes Falcão
- Department of Internal Medicine, Hospital Santa Maria, Lisbon, Portugal; Faculty of Medicine, University of Lisbon, Lisbon, Portugal.
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30
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2015 Japanese Society for Dialysis Therapy: Guidelines for Renal Anemia in Chronic Kidney Disease. RENAL REPLACEMENT THERAPY 2017. [DOI: 10.1186/s41100-017-0114-y] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Locatelli F, Del Vecchio L, Luise MC. Current and future chemical therapies for treating anaemia in chronic kidney disease. Expert Opin Pharmacother 2017; 18:781-788. [PMID: 28443351 DOI: 10.1080/14656566.2017.1323872] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Erythropoiesis-stimulating agents (ESAs) are not perfect, since they have potential side effects. Iron therapy is also receiving growing attention in recent years. Areas covered: We performed a literature search on PubMed using the following key words: anemia, chronic kidney disease, HIF stabilisers, sotatercept, actin traps, iron, iron-containing phosphate binders, iron dialysate. We reviewed new drugs that are under clinical development to obtain better safety and activity and/or easier and cheaper manufacturing processes in comparison to available ESAs. We also considered new strategies to increase iron stores. Several phase 1 and 2 studies support the beneficial role of increasing Hypoxia Inducible factor (HIF) activity for stimulating endogenous erythropoiesis. Sotatercept and luspatercept, two activin traps, are undergoing clinical development mainly for indications other than CKD. They have the additional effect of improving osteoporosis. Iron-containing phosphate binders have become available recently. Expert opinion: Several medical needs are unmet with ESA. HIF stabilisers are the most appealing drugs undergoing clinical development. They expose patients to lower levels of EPO than ESA, possibly reducing unintended effects. Their long-term safety is still to be demonstrated. One new iron-containing phosphate binders has the potential of combining two indications: hyperphosphoremia and iron deficiency, possibly improving compliance.
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Affiliation(s)
- Francesco Locatelli
- a Department of Nephrology and Dialysis , Alessandro Manzoni Hospital, ASST Lecco , Lecco , Italy
| | - Lucia Del Vecchio
- a Department of Nephrology and Dialysis , Alessandro Manzoni Hospital, ASST Lecco , Lecco , Italy
| | - Maria Carmen Luise
- a Department of Nephrology and Dialysis , Alessandro Manzoni Hospital, ASST Lecco , Lecco , Italy
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Use of darbepoetin alfa for myelodysplastic syndrome coincident with chronic kidney disease. CEN Case Rep 2017; 5:117-118. [PMID: 28509181 DOI: 10.1007/s13730-016-0212-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 12/28/2015] [Indexed: 12/29/2022] Open
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Clark B, Woolford SM, Eastwood A, Sharpe K, Barnes PG, Gore CJ. Temporal changes in physiology and haematology in response to high- and micro-doses of recombinant human erythropoietin. Drug Test Anal 2017; 9:1561-1571. [DOI: 10.1002/dta.2176] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 02/14/2017] [Accepted: 02/16/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Brad Clark
- University of Canberra Research Institute for Sport and Exercise, University of Canberra; University Drive North Bruce 2617 ACT Australia
| | - Sarah M. Woolford
- South Australian Sports Institute; Valetta Road Kidman Park 5025 SA Australia
| | - Annette Eastwood
- Department of Physiology; Australian Institute of Sport; Leverrier Crescent Bruce 2617 ACT Australia
- Bond Institute of Health and Sport; Bond University; Laver Drive Robina 4226 Queensland Australia
| | - Ken Sharpe
- Statistical Consulting Centre, School of Mathematics and Statistics; The University of Melbourne; Peter Hall Building Parkville 3010 Victoria Australia
| | - Peter G. Barnes
- South Australian Sports Institute; Valetta Road Kidman Park 5025 SA Australia
| | - Christopher J. Gore
- Department of Physiology; Australian Institute of Sport; Leverrier Crescent Bruce 2617 ACT Australia
- School of Education, Bedford Park Campus; Flinders University; Bedford Park 5042 SA Australia
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Roles of Serum Calcium, Phosphorus, PTH and ALP on Mortality in Peritoneal Dialysis Patients: A Nationwide, Population-based Longitudinal Study Using TWRDS 2005-2012. Sci Rep 2017; 7:33. [PMID: 28232731 PMCID: PMC5428378 DOI: 10.1038/s41598-017-00080-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 01/31/2017] [Indexed: 12/12/2022] Open
Abstract
Biomarkers of chronic kidney disease-mineral and bone disorder (CKD-MBD) correlate with morbidity and mortality in dialysis patients. However, the comparative roles of each CKD-MBD biomarker remained undetermined on long-term peritoneal dialysis (PD) patients. This retrospective study, employing a population-based database, aimed to evaluate the performance and provide the best evidence of each biomarker of CKD-MBD as predictor of all-cause mortality. Throughout the 8-year study period, total 12,116 PD patients were included in this study. Cox proportional regression and Kaplan-Meier method were used for survival analysis. For Cox regression model, baseline measurements and time-varying covariates were used for analysis. In Cox regression model using time-dependent covariates, serum calcium level of ≧9.5 mg/dL was associated with increased mortality. For phosphorus, serum levels of either ≧6.5 mg/dL or <3.5 mg/dL were associated with increased mortality. For parathyroid hormone (PTH), higher serum levels were not associated increased mortality. For alkaline phosphatase (ALP), mortality increased at levels ≧100 IU/L. Our findings suggested that the detrimental effect of ALP on survival was more consistent, while serum calcium, phosphorus and PTH may have a less prominent effect on mortality. This study provided additional information for manipulating CKD-MBD biomarkers in PD patients.
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Sibbel SP, Koro CE, Brunelli SM, Cobitz AR. Characterization of chronic and acute ESA hyporesponse: a retrospective cohort study of hemodialysis patients. BMC Nephrol 2015; 16:144. [PMID: 26283069 PMCID: PMC4539683 DOI: 10.1186/s12882-015-0138-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 08/03/2015] [Indexed: 12/18/2022] Open
Abstract
Background Some patients with chronic kidney disease do not respond adequately to erythropoiesis-stimulating agent (ESA) treatment; these patients are referred to as ESA hyporesponders. There is no widely accepted contemporary definition for chronic ESA hyporesponse. The study objective was to propose and validate an operational definition for chronic ESA hyporesponse. Methods This was a retrospective cohort study using electronic health care records. Participants were anemic hemodialysis patients treated during February 2012 and were followed for 15 months. Patients’ ESA response (responders) or lack of response (chronic and acute hyporesponders) based on longitudinal patterns of ESA dose and hemoglobin level was assessed. Persistence of hyporesponse, longitudinal iron measures, transfusion rates, and mortality rates were analyzed. Frequency of blood transfusions (monthly) and death rates (quarterly) were calculated. Log normalized serum ferritin concentration was analyzed. Results Of 97,677 eligible patients, 6632 had acute hyporesponsiveness (ESA responsiveness restituted in ≤ 4 months) and 3086 had chronic hyporesponsiveness (lack of ESA response for > 4 months). Over months 1–4 among chronic hyporesponders, mean serum ferritin (722–785 ng/mL) and transferrin saturation (TSAT; 26.76 %-27.08 %) were constant, while acute hyporesponsive patients experienced increased ferritin (654-760 ng/mL) and TSAT (25.71–30.88 %) levels. Compared to ESA responders (0.19–0.30 %), chronic hyporesponders were transfused 7-times (1.20–2.17 %) more frequently over follow-up. Quarterly mortality was greatest in chronic ESA hyporesponders (2.98–5.48 %), followed by acute ESA hyporesponders (2.17–3.30 %) and ESA responders (1.43–2.49 %). With consistence over the study, chronic hyporesponders died more frequently than patients in the other study cohorts. Conclusions Findings indicate that 4 months of continuous ESA hyporesponsiveness can be used to differentiate acute from chronic hyporesponsiveness. This definition of chronic hyporesponsiveness is supported by outcome data showing higher mortality and transfusion rates in chronic hyporesponders compared to acute hyporesponders. Electronic supplementary material The online version of this article (doi:10.1186/s12882-015-0138-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Carol E Koro
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, PA, 19426, USA.
| | | | - Alexander R Cobitz
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, PA, 19426, USA.
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Wilhelm-Leen ER, Winkelmayer WC. Mortality risk of darbepoetin alfa versus epoetin alfa in patients with CKD: systematic review and meta-analysis. Am J Kidney Dis 2015; 66:69-74. [PMID: 25636816 DOI: 10.1053/j.ajkd.2014.12.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 12/21/2014] [Indexed: 12/30/2022]
Abstract
BACKGROUND Epoetin alfa (EPO) and darbepoetin alfa (DPO) are erythropoiesis-stimulating agents that are widely and interchangeably used for the treatment of anemia in patients with advanced chronic kidney disease and end-stage renal disease. No study has specifically compared the risks of hard study outcomes between EPO and DPO, including mortality. STUDY DESIGN Systematic review of the literature and meta-analysis. SETTING & POPULATION Patients enrolled in randomized trials comparing EPO versus DPO for the treatment of anemia in adults with chronic kidney disease, including those requiring dialysis. SELECTION CRITERIA FOR STUDIES We conducted a systematic search of the literature (PubMed, CENTRAL, SCOPUS, and EMBASE, all years) and industry resources, using predefined search terms and data abstraction tools. We then summarized key characteristics and findings of these trials and performed a random-effects meta-analysis of trials with at least 3 months' duration to identify the summary OR of mortality between patients randomly assigned to DPO versus EPO. INTERVENTION DPO versus EPO. OUTCOME All-cause mortality. RESULTS We identified 9 trials that met the stated inclusion criteria. Overall, 2,024 patients were included in the meta-analysis, of whom 126 died during follow-up, which ranged from 20 to 52 weeks. We found no significant difference in mortality between patients randomly assigned to DPO versus EPO (OR, 1.33; 95% CI, 0.88-2.01). No treatment heterogeneity across studies was detected (Q statistic=4.60; P=0.8). LIMITATIONS Generalizability to nontrial populations is uncertain. CONCLUSIONS Few trials directly comparing DPO and EPO have been conducted and follow-up was limited. In aggregate, no effect of specific erythropoiesis-stimulating agent on mortality was identified, but the confidence limits were wide and remained compatible with considerable harm from DPO. Absent adequately powered randomized trials, observational postmarketing comparative effectiveness studies comparing these erythropoiesis-stimulating agents are required to better characterize the long-term safety profiles of these agents.
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Affiliation(s)
| | - Wolfgang C Winkelmayer
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA; Section of Nephrology, Baylor College of Medicine, Houston, TX.
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Chao CT, Lai CF, Huang JW, Chiang CK, Huang SJ. Association of increased travel distance to dialysis units with the risk of anemia in rural chronic hemodialysis elderly. Hemodial Int 2014; 19:44-53. [PMID: 24923997 DOI: 10.1111/hdi.12187] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Geographic remoteness has been found to influence health-related outcomes negatively. As reported in the literature, rural dialysis patients have a higher risk of mortality with increasing travel distance to dialysis units. However, few studies have focused on the impact of travel distances on the development of dialysis complications. We utilized a prospectively collected chronic hemodialysis patient cohort from a rural regional hospital for analysis. Data on demographics, comorbidities, and serum laboratory results were obtained. Correlation analyses between travel distance to dialysis units and dialysis complications were conducted, and significantly correlated parameters were entered into multivariate logistic regression models to determine their exact associations. A total of 46 rural chronic hemodialysis patients were enrolled, with an average age higher than others in the literature. Significant correlation was found between travel distance and serum hemoglobin levels (R(2) = -0.34, P value = 0.029). Multivariate logistic regression found that every 1 km increase in travel distance was associated with an increased risk of anemia (hemoglobin <9 g/dL) (odds ratio 1.46; P value = 0.01). Sensitivity analyses further showed that the associated risk was partially attenuated by serum albumin (odds ratio 1.83; P value = 0.07) and ferritin (odds ratio 1.39; P value = 0.08) levels. This is the first study to demonstrate the association between increased travel distance to dialysis units and the risk of anemia in chronic dialysis patients, especially elderly. Malnutrition, inflammation, and atherosclerosis syndrome could be partially responsible for the observed association. Further research is required to confirm our findings.
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Affiliation(s)
- Chia-Ter Chao
- Department of Medicine, National Taiwan University Hospital Jin-Shan branch, New Taipei City, Taiwan; Division of Nephrology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
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Papadopoulos G, Dounousi E, Papathanasiou A, Papathanakos G, Tzimas P. Cerebral oximetry values in dialyzed surgical patients: a comparison between hemodialysis and peritoneal dialysis. Ren Fail 2013; 35:855-9. [PMID: 23713678 DOI: 10.3109/0886022x.2013.794675] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Cerebral tissue regional oxygen saturation (rSO2) through near-infrared spectroscopy (NIRS) is a method for non-invasive monitoring of cerebral tissue oxygenation. However, nowadays there is limited information on the level of cerebral tissue oxygenation in dialyzed end-stage renal disease (ESRD) surgical patients. The aim of this observational study was to evaluate the baseline cerebral rSO2 values, to compare values between hemodialysis (HD) and peritoneal dialysis (PD) patients and identify risk factors that could predict cerebral tissue oxygenation in these patients. PATIENTS/METHODS Thirty-two ESRD patients (≥18 years old), scheduled to undergo elective minor or major surgery, were enrolled. Patients were allocated in two groups according to dialysis modality. Twenty-three patients were treated with HD and nine were treated with PD. Demographic and clinical characteristics, comorbidities and arterial hemoglobin oxygen saturation (SpO2) of the study population were recorded. RESULTS Patients who were treated with HD had significant lower baseline rSO2 values compared with PD patients [median, 50% (28-63) vs. 63% (45-69), p = 0.002]. Hierarchical linear regression model analysis showed that preoperative Hb and SpO2 were positive predictive variables (B = 0.353, p = 0.01 and B = 0.375, p = 0.009, respectively) for rSO2. Moreover, dialysis modality was independent predictor for baseline rSO2. The modality of dialysis remained an independent predictor for rSO2 after controlling for the other significant variables (B = 0.291, p = 0.032) and PD was associated with higher baseline values of rSO2. CONCLUSION In conclusion, ESRD surgical patients undergoing PD treatment appear to have significantly higher baseline cerebral tissue saturation values compared with HD.
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Affiliation(s)
- Georgios Papadopoulos
- Department of Anesthesia and Postoperative Intensive Care, University Hospital of Ioannina, Ioannina, Greece
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The MAINTAIN study--managing hemoglobin variability with darbepoetin alfa in dialysis patients experiencing a severe drop in hemoglobin. Wien Klin Wochenschr 2013; 125:71-82. [PMID: 23299452 DOI: 10.1007/s00508-012-0311-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 11/30/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Dialysis patients, receiving erythropoiesis stimulating agents, typically show signs of hemoglobin variability as a consequence of their dosing patterns, bleeding, infection, etc., which is commonly managed adjusting the dose regimen of the erythropoiesis stimulating agent. However, information on dosing strategies used in daily clinical practice and their outcomes in relation to hemoglobin variability is limited. OBJECTIVES To investigate clinical practice in Austria in relation with the management of hemoglobin variability, defined as a decrease of ³ 1 g/dL within 4 weeks from ³ 11 g/dL to £ 11 g/dL during maintenance therapy with darbepoetin alfa. The nature and incidence of clinical events related to the hemoglobin drop were also assessed. RESEARCH DESIGN AND METHODS The MAINTAIN non-interventional study was conducted in hemodialysis patients, receiving darbepoetin alfa in accordance to the label approved in the European Union at that time. Patient data were documented retrospectively for the 3 months prior to the hemoglobin drop. Data for the 6 months post hemoglobin drop were collected retrospectively or prospectively, depending on the time of patient inclusion respective to the Hb drop. RESULTS A hundred thirty six of 154 patients fulfilled all inclusion/exclusion criteria and had prospective documentation of 6 months. The main causes for the hemoglobin drop included surgical and medical procedures (36.1 %), and infections or infestations (24.4 %). The median treatment period was 273 days. The mean hemoglobin drop was - 1.74 g/dL (95 % confidence interval (CI): - 1.60 to - 1.87). Consequently, 81 % of the patients had their dose of darbepoetin alfa increased within a median Kaplan-Meier time to dose increase of 12.5 days (95 % CI: 6-22). The geometric mean weekly darbepoetin alfa dose increased by a factor of 1.1 from 29.1 mg (95 % CI: 24.6-34.4) in the 3 months before hemoglobin drop to 32.4 (95 % CI: 27.2-38.6) in months 4-6 post hemoglobin drop. Three patients had red blood cell transfusions before hemoglobin drop and nine patients after hemoglobin drop. The mean hemoglobin increase was 0.43 g/dL (95 % CI: 0.24-0.62) from immediately prior to 2 weeks after dose increase. The median Kaplan-Meier time to achieve a hemoglobin ³ 11 g/dL after hemoglobin drop was 36 days (95 % CI: 32-45). Frequent darbepoetin alfa dose adjustments were necessary to sustain maintenance levels. No drug-related adverse events were reported. CONCLUSIONS This observational study describes physicians' reactions to a drop in hemoglobin in clinical practice. Using darbepoetin alfa, the drop was generally compensated without leading to overcorrection.
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