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Mao TH, Huang HQ, Zhang CH. Clinical characteristics and treatment compounds of obesity-related kidney injury. World J Diabetes 2024; 15:1091-1110. [DOI: 10.4239/wjd.v15.i6.1091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/22/2023] [Accepted: 04/08/2024] [Indexed: 06/11/2024] Open
Abstract
Disorders in energy homeostasis can lead to various metabolic diseases, particularly obesity. The obesity epidemic has led to an increased incidence of obesity-related nephropathy (ORN), a distinct entity characterized by proteinuria, glomerulomegaly, progressive glomerulosclerosis, and renal function decline. Obesity and its associated renal damage are common in clinical practice, and their incidence is increasing and attracting great attention. There is a great need to identify safe and effective therapeutic modalities, and therapeutics using chemical compounds and natural products are receiving increasing attention. However, the summary is lacking about the specific effects and mechanisms of action of compounds in the treatment of ORN. In this review, we summarize the important clinical features and compound treatment strategies for obesity and obesity-induced kidney injury. We also summarize the pathologic and clinical features of ORN as well as its pathogenesis and potential therapeutics targeting renal inflammation, oxidative stress, insulin resistance, fibrosis, kidney lipid accumulation, and dysregulated autophagy. In addition, detailed information on natural and synthetic compounds used for the treatment of obesity-related kidney disease is summarized. The synthesis of detailed information aims to contribute to a deeper understanding of the clinical treatment modalities for obesity-related kidney diseases, fostering the anticipation of novel insights in this domain.
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Affiliation(s)
- Tuo-Hua Mao
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Han-Qi Huang
- Department of Endocrinology, Hubei No. 3 People’s Hospital of Jianghan University, Wuhan 430033, Hubei Province, China
| | - Chuan-Hai Zhang
- Department of Physiology, UT Southwestern Medical Center, Dallas, TX 75390, United States
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2
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da Silva IO, de Menezes NK, Jacobina HD, Parra AC, Souza FL, Castro LC, Roelofs JJTH, Tammaro A, Gomes SA, Sanches TR, Andrade L. Obesity aggravates acute kidney injury resulting from ischemia and reperfusion in mice. Sci Rep 2024; 14:9820. [PMID: 38684767 PMCID: PMC11059346 DOI: 10.1038/s41598-024-60365-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 04/22/2024] [Indexed: 05/02/2024] Open
Abstract
In critically ill patients, overweight and obesity are associated with acute respiratory distress syndrome and acute kidney injury (AKI). However, the effect of obesity on ischemia-reperfusion injury (IRI)-induced AKI is unknown. We hypothesized that obesity would aggravate renal IRI in mice. We fed mice a standard or high-fat diet for eight weeks. The mice were divided into four groups and submitted to sham surgery or IRI: obese, normal, normal + IRI, obese, and obese + IRI. All studies were performed 48 h after the procedures. Serum glucose, cholesterol, and creatinine clearance did not differ among the groups. Survival and urinary osmolality were lower in the obese + IRI group than in the normal + IRI group, whereas urinary neutrophil gelatinase-associated lipocalin levels, tubular injury scores, and caspase 3 expression were higher. Proliferating cell nuclear antigen expression was highest in the obese + IRI group, as were the levels of oxidative stress (urinary levels of thiobarbituric acid-reactive substances and renal heme oxygenase-1 protein expression), whereas renal Klotho protein expression was lowest in that group. Expression of glutathione peroxidase 4 and peroxiredoxin 6, proteins that induce lipid peroxidation, a hallmark of ferroptosis, was lower in the obese + IRI group. Notably, among the mice not induced to AKI, macrophage infiltration was greater in the obese group. In conclusion, greater oxidative stress and ferroptosis might aggravate IRI in obese individuals, and Klotho could be a therapeutic target in those with AKI.
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Affiliation(s)
- Igor Oliveira da Silva
- Laboratory of Basic Science in Renal Diseases (LIM-12), Division of Nephrology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Nicole K de Menezes
- Laboratory of Basic Science in Renal Diseases (LIM-12), Division of Nephrology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Heloisa D Jacobina
- Laboratory of Basic Science in Renal Diseases (LIM-12), Division of Nephrology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Antonio Carlos Parra
- Laboratory of Basic Science in Renal Diseases (LIM-12), Division of Nephrology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Felipe Lima Souza
- Laboratory of Cellular Genetic and Molecular Nephrology, Division of Nephrology, Av. Dr. Arnaldo, 455, 3º Andar, sala 3310, University of São Paulo School of Medicine, São Paulo, SP, CEP 01246-903, Brazil
| | - Leticia Cardoso Castro
- Laboratory of Basic Science in Renal Diseases (LIM-12), Division of Nephrology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Joris J T H Roelofs
- Department of Pathology, Amsterdam UMC, Location AMC, University of Amsterdam, Amsterdam, the Netherlands
- Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, the Netherlands
| | - Alessandra Tammaro
- Department of Pathology, Amsterdam UMC, Location AMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Samirah Abreu Gomes
- Laboratory of Cellular Genetic and Molecular Nephrology, Division of Nephrology, Av. Dr. Arnaldo, 455, 3º Andar, sala 3310, University of São Paulo School of Medicine, São Paulo, SP, CEP 01246-903, Brazil
| | - Talita Rojas Sanches
- Laboratory of Basic Science in Renal Diseases (LIM-12), Division of Nephrology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Lucia Andrade
- Laboratory of Basic Science in Renal Diseases (LIM-12), Division of Nephrology, University of São Paulo School of Medicine, São Paulo, Brazil.
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Khalil MAM, Sadagah NM, Tan J, Syed FO, Chong VH, Al-Qurashi SH. Pros and cons of live kidney donation in prediabetics: A critical review and way forward. World J Transplant 2024; 14:89822. [PMID: 38576756 PMCID: PMC10989475 DOI: 10.5500/wjt.v14.i1.89822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/11/2023] [Accepted: 01/16/2024] [Indexed: 03/15/2024] Open
Abstract
There is shortage of organs, including kidneys, worldwide. Along with deceased kidney transplantation, there is a significant rise in live kidney donation. The prevalence of prediabetes (PD), including impaired fasting glucose and impaired glucose tolerance, is on the rise across the globe. Transplant teams frequently come across prediabetic kidney donors for evaluation. Prediabetics are at risk of diabetes, chronic kidney disease, cardiovascular events, stroke, neuropathy, retinopathy, dementia, depression and nonalcoholic liver disease along with increased risk of all-cause mortality. Unfortunately, most of the studies done in prediabetic kidney donors are retrospective in nature and have a short follow up period. There is lack of prospective long-term studies to know about the real risk of complications after donation. Furthermore, there are variations in recommendations from various guidelines across the globe for donations in prediabetics, leading to more confusion among clinicians. This increases the responsibility of transplant teams to take appropriate decisions in the best interest of both donors and recipients. This review focuses on pathophysiological changes of PD in kidneys, potential complications of PD, other risk factors for development of type 2 diabetes, a review of guidelines for kidney donation, the potential role of diabetes risk score and calculator in kidney donors and the way forward for the evaluation and selection of prediabetic kidney donors.
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Affiliation(s)
- Muhammad Abdul Mabood Khalil
- Center of Renal Diseases and Transplantation, King Fahad Armed Forces Hospital Jeddah, Jeddah 23311, Saudi Arabia
| | - Nihal Mohammed Sadagah
- Center of Renal Diseases and Transplantation, King Fahad Armed Forces Hospital Jeddah, Jeddah 23311, Saudi Arabia
| | - Jackson Tan
- Department of Nephrology, RIPAS Hospital Brunei Darussalam, Brunei Muara BA1710, Brunei Darussalam
| | - Furrukh Omair Syed
- Center of Renal Diseases and Transplantation, King Fahad Armed Forces Hospital Jeddah, Jeddah 23311, Saudi Arabia
| | - Vui Heng Chong
- Division of Gastroenterology and Hepatology, Department of Medicine, Raja Isteri Pengiran Anak Saleha Hospital, Bandar Seri Begawan BA1710, Brunei Darussalam
| | - Salem H Al-Qurashi
- Center of Renal Diseases and Transplantation, King Fahad Armed Forces Hospital Jeddah, Jeddah 23311, Saudi Arabia
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Mahmood K, Ahmad A, Upadhyay R, Khatoon T, Imbisat Z, Akela A. Comprehensive Surgical Audit of Live-Related Donor Nephrectomy: Procedural Parameters, Demographics, Health Assessments, Complications, and Postoperative Outcomes. Cureus 2024; 16:e57363. [PMID: 38694424 PMCID: PMC11061546 DOI: 10.7759/cureus.57363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2024] [Indexed: 05/04/2024] Open
Abstract
BACKGROUND AND OBJECTIVES End-stage renal disease (ESRD) rates are on the rise globally, including in India. However, the affordability of dialysis treatment remains a significant challenge for many, with costs varying across different regions. Although cost-effective, kidney transplantation faces challenges like a surgeon shortage, lack of infrastructure, and lack of logistic support. The study examines Indian laparoscopic nephrectomy outcomes and their benefits for donor recovery. It covers kidney donor procedural details, demographics, preoperative health evaluations, complications, and one-month follow-up. METHODS Ethical approval was obtained, and the study involved 102 cases at the Indira Gandhi Institute of Medical Science, Patna, Bihar, India, from 2019 to 2023. Detailed preoperative assessments, postoperative complications, and one-month follow-up analyses were conducted. Statistical analysis employed SPSS version 17 (IBM Corp., Armonk, NY). RESULTS The results revealed an average surgery time of 152.3 min, blood loss of 205 ± 42 ml, and a hospital stay of 4.6 ± 2.2 days. The study found a female predominance (80.39%), with a mean donor age of 35.9 ± 5.2 years. Preoperative assessments showed robust patient health, with glomerular filtration rate (GFR) exceeding the expected threshold and normal urea levels, creatinine, electrolytes, liver enzymes, bilirubin, albumin, and total protein. Post-nephrectomy complications were reported, with females experiencing more difficulties than males. CONCLUSION This study underscores the efficiency and safety of laparoscopic nephrectomy in the Indian context, providing valuable insights into donor demographics, preoperative health assessments, complications, and postoperative outcomes. The findings contribute to understanding laparoscopic nephrectomy outcomes and associated risk factors despite certain limitations.
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Affiliation(s)
- Khalid Mahmood
- Department of Urology, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Ahsan Ahmad
- Department of Urology, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Rohit Upadhyay
- Department of Urology, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Takallum Khatoon
- Department of Anaesthesiology, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Zaid Imbisat
- Department of Urology, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Ankur Akela
- Department of Urology, Indira Gandhi Institute of Medical Sciences, Patna, IND
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Plawecki M, Gayrard N, Jeanson L, Chauvin A, Lajoix AD, Cristol JP, Jover B, Raynaud F. Cardiac remodeling associated with chronic kidney disease is enhanced in a rat model of metabolic syndrome: Preparation of mesenchymal transition. Mol Cell Biochem 2024; 479:29-39. [PMID: 36976428 DOI: 10.1007/s11010-023-04710-6] [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: 12/12/2022] [Accepted: 03/13/2023] [Indexed: 03/29/2023]
Abstract
Cardiac alteration due to chronic kidney disease is described by tissue fibrosis. This remodeling involves myofibroblasts of various origins, including epithelial or endothelial to mesenchymal transitions. In addition, obesity and insulin resistance together or separately seem to exacerbate cardiovascular risk in chronic kidney disease (CKD). The main objective of this study was to assess if pre-existing metabolic disease exacerbates CKD-induced cardiac alterations. In addition, we hypothesised that endothelial to mesenchymal transition participates in this enhancement of cardiac fibrosis. Rats fed cafeteria type diet for 6 months underwent a subtotal nephrectomy at 4 months. Cardiac fibrosis was evaluated by histology and qRT-PCR. Collagens and macrophages were quantified by immunohistochemistry. Endothelial to mesenchymal transitions were assessed by qRT-PCR (CD31, VE-cadherin, α-SMA, nestin) and also by CD31 immunofluorescence staining. Rats fed with cafeteria type regimen were obese, hypertensive and insulin resistant. Cardiac fibrosis was predominant in CKD rats and was highly majored by cafeteria regimen. Collagen-1 and nestin expressions were higher in CKD rats, independently of regimen. Interestingly, in rats with CKD and cafeteria diet we found an increase of CD31 and α-SMA co-staining with suggest an implication of endothelial to mesenchymal transition during heart fibrosis. We showed that rats already obese and insulin resistant had an enhanced cardiac alteration to a subsequent renal injury. Cardiac fibrosis process could be supported by a involvement of the endothelial to mesenchymal transition phenomenon.
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Affiliation(s)
- Maëlle Plawecki
- PHYMEDEXP, Université de Montpellier, INSERM, CNRS, Montpellier, France
- Laboratoire de Biochimie et d'hormonologie, CHU Lapeyronie, Montpellier, France
| | | | - Laura Jeanson
- BC2M, Université de Montpellier, Montpellier, France
| | - Anthony Chauvin
- PHYMEDEXP, Université de Montpellier, INSERM, CNRS, Montpellier, France
| | | | - Jean-Paul Cristol
- PHYMEDEXP, Université de Montpellier, INSERM, CNRS, Montpellier, France
- Laboratoire de Biochimie et d'hormonologie, CHU Lapeyronie, Montpellier, France
| | - Bernard Jover
- PHYMEDEXP, Université de Montpellier, INSERM, CNRS, Montpellier, France
| | - Fabrice Raynaud
- PHYMEDEXP, Université de Montpellier, INSERM, CNRS, Montpellier, France.
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Carullo N, Zicarelli M, Michael A, Faga T, Battaglia Y, Pisani A, Perticone M, Costa D, Ielapi N, Coppolino G, Bolignano D, Serra R, Andreucci M. Childhood Obesity: Insight into Kidney Involvement. Int J Mol Sci 2023; 24:17400. [PMID: 38139229 PMCID: PMC10743690 DOI: 10.3390/ijms242417400] [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: 11/02/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
This review examines the impact of childhood obesity on the kidney from an epidemiological, pathogenetic, clinical, and pathological perspective, with the aim of providing pediatricians and nephrologists with the most current data on this topic. The prevalence of childhood obesity and chronic kidney disease (CKD) is steadily increasing worldwide, reaching epidemic proportions. While the impact of obesity in children with CKD is less pronounced than in adults, recent studies suggest a similar trend in the child population. This is likely due to the significant association between obesity and the two leading causes of end-stage renal disease (ESRD): diabetes mellitus (DM) and hypertension. Obesity is a complex, systemic disease that reflects interactions between environmental and genetic factors. A key mechanism of kidney damage is related to metabolic syndrome and insulin resistance. Therefore, we can speculate about an adipose tissue-kidney axis in which neurohormonal and immunological mechanisms exacerbate complications resulting from obesity. Adipose tissue, now recognized as an endocrine organ, secretes cytokines called adipokines that may induce adaptive or maladaptive responses in renal cells, leading to kidney fibrosis. The impact of obesity on kidney transplant-related outcomes for both donors and recipients is also significant, making stringent preventive measures critical in the pre- and post-transplant phases. The challenge lies in identifying renal involvement as early as possible, as it is often completely asymptomatic and not detectable through common markers of kidney function. Ongoing research into innovative technologies, such as proteomics and metabolomics, aims to identify new biomarkers and is constantly evolving. Many aspects of pediatric disease progression in the population of children with obesity still require clarification. However, the latest scientific evidence in the field of nephrology offers glimpses into various new perspectives, such as genetic factors, comorbidities, and novel biomarkers. Investigating these aspects early could potentially improve the prognosis of these young patients through new diagnostic and therapeutic strategies. Hence, the aim of this review is to provide a comprehensive exploration of the pathogenetic mechanisms and prevalent pathological patterns of kidney damage observed in children with obesity.
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Affiliation(s)
- Nazareno Carullo
- Department of Health Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (N.C.); (M.Z.); (A.M.); (T.F.); (G.C.)
| | - Mariateresa Zicarelli
- Department of Health Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (N.C.); (M.Z.); (A.M.); (T.F.); (G.C.)
| | - Ashour Michael
- Department of Health Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (N.C.); (M.Z.); (A.M.); (T.F.); (G.C.)
| | - Teresa Faga
- Department of Health Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (N.C.); (M.Z.); (A.M.); (T.F.); (G.C.)
| | - Yuri Battaglia
- Department of Medicine, University of Verona, 37129 Verona, Italy;
| | - Antonio Pisani
- Department of Public Health, University Federico II of Naples, 80131 Naples, Italy;
| | - Maria Perticone
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (M.P.); (D.C.); (D.B.)
| | - Davide Costa
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (M.P.); (D.C.); (D.B.)
- Interuniversity Center of Phlebolymphology (CIFL), “Magna Graecia” University, 88100 Catanzaro, Italy;
| | - Nicola Ielapi
- Interuniversity Center of Phlebolymphology (CIFL), “Magna Graecia” University, 88100 Catanzaro, Italy;
- Department of Public Health and Infectious Disease, “Sapienza” University of Rome, 00185 Rome, Italy
| | - Giuseppe Coppolino
- Department of Health Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (N.C.); (M.Z.); (A.M.); (T.F.); (G.C.)
| | - Davide Bolignano
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (M.P.); (D.C.); (D.B.)
| | - Raffaele Serra
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (M.P.); (D.C.); (D.B.)
- Interuniversity Center of Phlebolymphology (CIFL), “Magna Graecia” University, 88100 Catanzaro, Italy;
| | - Michele Andreucci
- Department of Health Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (N.C.); (M.Z.); (A.M.); (T.F.); (G.C.)
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Abstract
The prevalence of obesity has increased dramatically during the past decades, which has been a major health problem. Since 1975, the number of people with obesity worldwide has nearly tripled. An increasing number of studies find obesity as a driver of chronic kidney disease (CKD) progression, and the mechanisms are complex and include hemodynamic changes, inflammation, oxidative stress, and activation of the renin-angiotensin-aldosterone system (RAAS). Obesity-related kidney disease is characterized by glomerulomegaly, which is often accompanied by localized and segmental glomerulosclerosis lesions. In these patients, the early symptoms are atypical, with microproteinuria being the main clinical manifestation and nephrotic syndrome being rare. Weight loss and RAAS blockers have a protective effect on obesity-related CKD, but even so, a significant proportion of patients eventually progress to end-stage renal disease despite treatment. Thus, it is critical to comprehend the mechanisms underlying obesity-related CKD to create new tactics for slowing or stopping disease progression. In this review, we summarize current knowledge on the mechanisms of obesity-related kidney disease, its pathological changes, and future perspectives on its treatment.
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Affiliation(s)
- Zongmiao Jiang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Yao Wang
- Department of Orthopedics, The Second Hospital Jilin University, Changchun, China
| | - Xue Zhao
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Haiying Cui
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Mingyue Han
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Xinhua Ren
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Xiaokun Gang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Guixia Wang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
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Haruhara K, Kanzaki G, Tsuboi N. Nephrons, podocytes and chronic kidney disease: Strategic antihypertensive therapy for renoprotection. Hypertens Res 2023; 46:299-310. [PMID: 36224286 PMCID: PMC9899692 DOI: 10.1038/s41440-022-01061-5] [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] [Received: 05/28/2022] [Revised: 08/06/2022] [Accepted: 09/05/2022] [Indexed: 02/07/2023]
Abstract
Chronic kidney disease (CKD) is one of the strongest risk factors for hypertension, and hypertension can exacerbate the progression of CKD. Thus, the management of CKD and antihypertensive therapy are inextricably linked. Research over the past decades has shown that the human kidney is more diverse than initially thought. Subjects with low nephron endowment are at increased risk of developing CKD and hypertension, which is consistent with the theory of the developmental origins of health and disease. Combined with other lifetime risks of CKD, hypertension may lead to a vicious cycle consisting of podocyte injury, glomerulosclerosis and further loss of nephrons. Of note, recent studies have shown that the number of nephrons correlates well with the number of podocytes, suggesting that these two components are intrinsically linked and may influence each other. Both nephrons and podocytes have no or very limited regenerative capacity and are destined to decrease throughout life. Therefore, one of the best strategies to slow the progression of CKD is to maintain the "numbers" of these essential components necessary to preserve renal function. To this end, both the achievement of an optimal blood pressure and a maximum reduction in urinary protein excretion are essential. Lifestyle modifications and antihypertensive drug therapy must be carefully individualized to address the potential diversity of the kidneys.
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Affiliation(s)
- Kotaro Haruhara
- grid.411898.d0000 0001 0661 2073Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Go Kanzaki
- grid.411898.d0000 0001 0661 2073Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Nobuo Tsuboi
- grid.411898.d0000 0001 0661 2073Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
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Matas AJ, Rule AD. Long-term Medical Outcomes of Living Kidney Donors. Mayo Clin Proc 2022; 97:2107-2122. [PMID: 36216599 PMCID: PMC9747133 DOI: 10.1016/j.mayocp.2022.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 06/03/2022] [Accepted: 06/13/2022] [Indexed: 12/15/2022]
Abstract
Historically, to minimize risks, living kidney donors have been highly selected and healthy. Operative risks are well-defined, yet concern remains about long-term risks. In the general population, even a mild reduction in glomerular filtration rate (GFR) is associated with cardiovascular disease, chronic kidney disease, and end-stage kidney disease (ESKD). However, reduction in GFR in the general population is due to kidney or systemic disease. Retrospective studies comparing donors with matched general population controls have found no increased donor risk. Prospective studies comparing donors with controls (maximum follow-up, 9 years) have reported that donor GFR is stable or increases slightly, whereas GFR decreases in controls. However, these same studies identified metabolic and vascular donor abnormalities. There are a few retrospective studies comparing donors with controls. Each has limitations in selection of the control group, statistical analyses, and/or length of follow-up. One such study reported increased donor mortality; 2 reported a small increase in absolute risk of ESKD. Risk factors for donor ESKD are similar to those in the general population. Postdonation pregnancies are also associated with increased risk of hypertension and preeclampsia. There is a critical need for long-term follow-up studies comparing donors with controls from the same era, geographic area, and socioeconomic status who are healthy, with normal renal function on the date matching the date of donation, and are matched on demographic characteristics with the donors. These data are needed to optimize donor candidate counseling and informed consent.
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Affiliation(s)
- Arthur J Matas
- Transplantation Division, Department of Surgery, University of Minnesota, Minneapolis.
| | - Andrew D Rule
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
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10
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Okidi O, Sharma V, Piscoran O, Biggins F, Singh R, Augustine T. The altruistic elderly, a valuable but unrecognised kidney donor group. A case report of an 85-year-old unspecified kidney donor. BMC Geriatr 2022; 22:826. [PMID: 36303107 PMCID: PMC9615365 DOI: 10.1186/s12877-022-03511-8] [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: 04/23/2021] [Accepted: 10/08/2022] [Indexed: 11/27/2022] Open
Abstract
Background Kidney transplantation is the definitive treatment for end stage renal disease (ESRD), offering improved quality of life and survival benefit over remaining on dialysis. There is, however, a prevailing significant mismatch between patients awaiting transplantation and available donor kidneys. Over time, initial stringent donor criteria have broadened and organs from extended criteria donors (ECDs) and older donors are now being accepted for transplantation. The spectrum of living donors has also undergone a change from close family members to an increasingly non-related, non-directed altruistic donors, newly classified as ‘unspecified’ donors. Unspecified elderly donors could be a potential untapped resource to expanding the kidney donor pool globally. Case Presentation We present a case of an 85 year and 8 months old individual, who donated to an unrelated non-directed matched recipient in the national deceased donor transplant waiting list with excellent donor and recipient outcomes at 7 years. Conclusion To our knowledge she is one of the oldest reported unspecified living kidney donors in the world to date. This case illustrates that elderly donors in good health can come forward to donate, knowing that it is safe and valuable. Once the immediate perioperative challenges after kidney donation are managed, elderly donors rarely encounter long term sequelae. We therefore report this case to increase awareness and refocus attention of transplant teams on elderly donors as a potential untapped group to help address the organ shortage problem in renal transplantation.
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Affiliation(s)
- Okechukwu Okidi
- The Manchester Centre for Transplantation, Manchester Royal Infirmary, Oxford Road, Manchester, M13 9WL, UK. .,Abdominal Organ Transplantation, Houston Methodist Hospital, Houston, TX, 77030, USA.
| | - Videha Sharma
- The Manchester Centre for Transplantation, Manchester Royal Infirmary, Oxford Road, Manchester, M13 9WL, UK
| | - Oana Piscoran
- The Manchester Centre for Transplantation, Manchester Royal Infirmary, Oxford Road, Manchester, M13 9WL, UK
| | - Fiona Biggins
- Department of Renal Medicine, Lancashire Teaching Hospitals NHS Foundation Trust, Preston, UK
| | - Rajinder Singh
- The Manchester Centre for Transplantation, Manchester Royal Infirmary, Oxford Road, Manchester, M13 9WL, UK
| | - Titus Augustine
- The Manchester Centre for Transplantation, Manchester Royal Infirmary, Oxford Road, Manchester, M13 9WL, UK.,Division of Diabetes, Endocrinology and Gastroenterology, Faculty of Medicine, Biology and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
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11
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Novel Insights in the Physiopathology and Management of Obesity-Related Kidney Disease. Nutrients 2022; 14:nu14193937. [PMID: 36235590 PMCID: PMC9572176 DOI: 10.3390/nu14193937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/18/2022] [Accepted: 09/19/2022] [Indexed: 11/30/2022] Open
Abstract
Obesity is recognized as an independent risk factor for the development of kidney disease, which has led to the designation of obesity-related glomerulopathy (ORG). Common renal features observed in this condition include glomerular hypertrophy, glomerulosclerosis, haemodynamic changes and glomerular filtration barrier defects. Additionally, and although less studied, obesity-related kidney disease also involves alterations in renal tubules, including tubule hypertrophy, lipid deposition and tubulointerstitial fibrosis. Although not completely understood, the harmful effects of obesity on the kidney may be mediated by different mechanisms, with alterations in adipose tissue probably playing an important role. An increase in visceral adipose tissue has classically been associated with the development of kidney damage, however, recent studies point to adipose tissue surrounding the kidney, and specifically to the fat within the renal sinus, as potentially involved in the development of ORG. In addition, new strategies for the treatment of patients with obesity-related kidney disease are focusing on the management of obesity. In this regard, some non-invasive options, such as glucagon-like peptide-1 (GLP-1) receptor agonists or sodium–glucose cotransporter-2 (SGLT2) inhibitors, are being considered for application in the clinic, not only for patients with diabetic kidney disease but as a novel pharmacological strategy for patients with ORG. In addition, bariatric surgery stands as one of the most effective options, not only for weight loss but also for the improvement of kidney outcomes in obese patients with chronic kidney disease.
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Bellini MI, Nozdrin M, Pengel L, Knight S, Papalois V. Risks for donors associated with living kidney donation: meta-analysis. Br J Surg 2022; 109:671-678. [PMID: 35612960 PMCID: PMC10364766 DOI: 10.1093/bjs/znac114] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/30/2021] [Accepted: 03/21/2022] [Indexed: 08/02/2023]
Abstract
BACKGROUND Living kidney donation risk is likely to differ according to donor's demographics. We aimed to analyse the effects of age, sex, body mass index (BMI) and ethnicity. METHODS A systematic review and meta-analysis was undertaken of the effects of preoperative patient characteristics on donor kidney function outcomes, surgical complications, and hypertension. RESULTS 5129 studies were identified, of which 31 met the inclusion criteria, mainly from the USA and Europe. The estimated glomerular filtration rate (eGFR) in donors aged over 60 years was a mean of 9.54 ml per min per 1.73 m2 lower than that of younger donors (P < 0.001). Female donors had higher relative short- and long-term survival. BMI of over 30 kg/m2 was found to significantly lower the donor's eGFR 1 year after donation: the eGFR of obese donors was lower than that of non-obese patients by a mean of -2.70 (95 per cent c.i. -3.24 to -2.15) ml per min per 1.73 m2 (P < 0.001). Obesity was also associated with higher blood pressure both before and 1 year after donation, and a higher level of proteinuria, but had no impact on operative complications. In the long term, African donors were more likely to develop end-stage renal disease than Caucasians. CONCLUSION Obesity and male sex were associated with inferior outcomes. Older donors (aged over 60 years) have a larger eGFR decline than younger donors, and African donors have a higher incidence of ESRD than Caucasians.
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Affiliation(s)
- Maria Irene Bellini
- Correspondence to: Maria Irene Bellini, Department of Surgical Sciences, Terza Clinica Chirurgica, Sapienza University, Viale Regina Elena 324, 00161 Roma, Italy (e-mail: )
| | | | - Liset Pengel
- Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Simon Knight
- Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
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13
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Martínez-Montoro JI, Morales E, Cornejo-Pareja I, Tinahones FJ, Fernández-García JC. Obesity-related glomerulopathy: Current approaches and future perspectives. Obes Rev 2022; 23:e13450. [PMID: 35362662 PMCID: PMC9286698 DOI: 10.1111/obr.13450] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 12/20/2022]
Abstract
Obesity-related glomerulopathy (ORG) is a silent comorbidity which is increasing in incidence as the obesity epidemic escalates. ORG is associated with serious health consequences including chronic kidney disease, end-stage renal disease (ESRD), and increased mortality. Although the pathogenic mechanisms involved in the development of ORG are not fully understood, glomerular hemodynamic changes, renin-angiotensin-aldosterone system (RAAS) overactivation, insulin-resistance, inflammation and ectopic lipid accumulation seem to play a major role. Despite albuminuria being commonly used for the non-invasive evaluation of ORG, promising biomarkers of early kidney injury that are emerging, as well as new approaches with proteomics and metabolomics, might permit an earlier diagnosis of this disease. In addition, the assessment of ectopic kidney fat by renal imaging could be a useful tool to detect and evaluate the progression of ORG. Weight loss interventions appear to be effective in ORG, although large-scale trials are needed. RAAS blockade has a renoprotective effect in patients with ORG, but even so, a significant proportion of patients with ORG will eventually progress to ESRD despite therapeutic efforts. It is noteworthy that certain antidiabetic agents such as sodium-glucose cotransporter 2 inhibitors (SGLT2i) or glucagon-like peptide-1 receptor agonists (GLP-1 RAs) could be useful in the treatment of ORG through different pleiotropic effects. In this article, we review current approaches and future perspectives in the care and treatment of ORG.
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Affiliation(s)
- José Ignacio Martínez-Montoro
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, Málaga, Spain.,Faculty of Medicine, University of Málaga, Málaga, Spain.,Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Enrique Morales
- Department of Nephrology, 12 de Octubre University Hospital, Madrid, Spain.,Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain.,Department of Medicine, Complutense University, Madrid, Spain
| | - Isabel Cornejo-Pareja
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, Málaga, Spain.,Faculty of Medicine, University of Málaga, Málaga, Spain.,Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain.,Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y la Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain
| | - Francisco J Tinahones
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, Málaga, Spain.,Faculty of Medicine, University of Málaga, Málaga, Spain.,Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain.,Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y la Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain
| | - José Carlos Fernández-García
- Faculty of Medicine, University of Málaga, Málaga, Spain.,Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain.,Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y la Nutrición (CIBERObn), Instituto de Salud Carlos III, Madrid, Spain.,Department of Endocrinology and Nutrition, Regional University Hospital of Málaga, Málaga, Spain
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14
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Goh ET, Gan CC, Lim SK, Wong CM, Lee YW, Jalalonmuhali M. Metabolic Changes In Living Kidney Donors After Donation In University Malaya Medical Centre. Transplant Proc 2022; 54:242-247. [DOI: 10.1016/j.transproceed.2022.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 10/19/2022]
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15
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Rinne AG, Sorensen CA, Lima SL, Gil MG, Mena NN, Martín LD, Ramírez A, Morales A, Vega N, Gallego E, Izquierdo EM, Cabello E, Rodríguez AER, González JP, Escamilla B, Cruz C, Tamajón LP, Ramírez AT, Gaspari F, Ortiz A, Porrini E. OUP accepted manuscript. Clin Kidney J 2022; 15:885-894. [PMID: 35498883 PMCID: PMC9050540 DOI: 10.1093/ckj/sfab220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Indexed: 11/22/2022] Open
Abstract
Background In living kidney transplantation there are two different individuals, a healthy donor and a renal transplant recipient. This is an excellent human model to study factors that influence kidney function in the context of reduced renal mass and the adaptation of two comparable kidneys to different metabolic demands. Methods We analyzed the changes in measured glomerular filtration rate (GFR, iohexol) from pretransplantation to 12 months after transplantation in 30 donor–recipient pairs. Each donor was compared with his/her recipient. We defined a priori three different groups based on GFR differences at 12 months: donor > recipient (Group A; 78 ± 8 versus 57 ± 8 mL/min), donor < recipient (Group B; 65 ± 11 versus 79 ± 11 mL/min) and donor ≈ recipient (Group C; 66 ± 7 versus 67 ± 7 mL/min). Other factors like donor/recipient mismatches in body mass index (BMI), surface area and gender were evaluated. Results In Group A donors were mostly male and recipients were female (75% each). Donors had a higher baseline weight than their recipients. During follow-up, weight remained stable in donors but increased 7% in recipients. In Group B donors were mostly female (60%) and recipients male. At baseline, donors had a lower weight than recipients. At 12 months, weight was stable in donors but increased in recipients. In Group C donors were mostly (75%) female and recipients male. At baseline, donors had a higher BMI than their recipients. At 12 months, BMI was stable in donors but increased 14% in recipients. In multivariable analysis, higher GFR at 12 months was associated with higher baseline weight and GFR in donors and with male gender and higher baseline weight in recipients. Conclusions Kidneys from living donors are more ‘plastic’ than originally thought and respond to metabolic demands and weight changes of their new host. These changes should be taken into account when assessing GFR outcomes in this population.
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Affiliation(s)
- Ana González Rinne
- Department of Nephrology, University Hospital of the Canary Islands, Tenerife, Spain
| | | | - Sergio Luis Lima
- IIS-Fundación Jiménez Diaz, Department of Medicine, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - Marta Gómez Gil
- Radiology Department, Hospital Universitario de Canarias, Tenerife, Spain
| | - Natalia Negrín Mena
- Research Unit Department, Unidad de Investigación Clínica y Ensayos Clínicos, Hospital Universitario de Canarias, Tenerife, Spain
- LFR Laboratorio de Función Renal, Universidad de La Laguna, Tenerife, Spain
| | - Laura Díaz Martín
- Research Unit Department, Unidad de Investigación Clínica y Ensayos Clínicos, Hospital Universitario de Canarias, Tenerife, Spain
- LFR Laboratorio de Función Renal, Universidad de La Laguna, Tenerife, Spain
| | - Ana Ramírez
- Nephrology Department, Hospital Universitario Insular, Las Palmas de Gran Canaria, Spain
| | - Adelaida Morales
- Nephrology Department, Hospital General de Lanzarote, Arrecife, Spain
| | - Nicanor Vega
- Nephrology Department, Hospital Universitario Doctor Negrín, Las Palmas de Gran Canaria, Spain
| | - Eduardo Gallego
- Nephrology Department, Hospital Universitario Nuestra Señora de Candelaria, Tenerife, Spain
| | | | - Elisa Cabello
- Nephrology Department, Hospital General de La Palma, Santa Cruz de La Palma, Spain
| | | | | | - Beatriz Escamilla
- Department of Nephrology, University Hospital of the Canary Islands, Tenerife, Spain
| | - Coriolano Cruz
- Research Unit Department, Unidad de Investigación Clínica y Ensayos Clínicos, Hospital Universitario de Canarias, Tenerife, Spain
- LFR Laboratorio de Función Renal, Universidad de La Laguna, Tenerife, Spain
| | - Lourdes Pérez Tamajón
- Department of Nephrology, University Hospital of the Canary Islands, Tenerife, Spain
| | - Armando Torres Ramírez
- Department of Nephrology, University Hospital of the Canary Islands, Tenerife, Spain
- Internal Medicine Department, Universidad de La Laguna, ITB Instituto de Tecnologías Biomédicas, Tenerife, Spain
| | - Flavio Gaspari
- LFR Laboratorio de Función Renal, Universidad de La Laguna, Tenerife, Spain
| | - Alberto Ortiz
- IIS-Fundación Jiménez Diaz, Department of Medicine, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
- Red de Investigación Renal, Instituto Carlos III-FEDER, Madrid, Spain
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Arabi Z, Bukhari M, Hamad A, Altheaby A, Kaysi S. Practice Patterns in the Acceptance of Medically Complex Living Kidney Donors with Obesity, Hypertension, Family History of Kidney Disease, or Donor-Recipient Age Discrepancy. Avicenna J Med 2021; 11:172-184. [PMID: 34881200 PMCID: PMC8648409 DOI: 10.1055/s-0041-1736541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background
To assess the practice patterns of the acceptance of medically complex living kidney donors (MCLKDs).
Methods
We distributed a survey to nephrologists and transplant surgeons (TS) across the world through major international transplant societies. The survey contained questions regarding obesity, abnormal blood glucose profile, mild hypertension, donor-recipient age discrepancy, or family history of kidney disease of unknown etiology.
Results
In total, 239 respondents from 29 countries (42% were nephrologists and 58% were TS).
Most respondents would allow donations from obese donors, especially if they intended to lose weight but would be cautious if these donors had abnormal blood glucose or family history of diabetes mellitus. In hypertensive donors, future pregnancy plans mattered in decisions regarding the acceptance of female donors. Most respondents would allow young donors but would be more cautious if they had a future risk of hypertension or a family history of kidney disease of unknown etiology. They would also allow donations from an older person if prolonged waiting time was anticipated. We found multiple areas of consensus of practice among the diverse members of international transplant societies, with some interesting variations among nephrologists and TS. Conclusions
This survey highlights the practice patterns of the acceptance of MCLKDs among the international community. In the absence of clear guidelines, this survey provides additional information to counsel kidney donors with these conditions.
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Affiliation(s)
- Ziad Arabi
- Department of the Organ Transplant Center, Division of Adult Transplant Nephrology, King Abdulaziz Medical City, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Muhammad Bukhari
- Department of Medicine, Division of Adult Nephrology, Taif University, Taif, Saudi Arabia
| | - Abdullah Hamad
- Department of Medicine, Division of Nephrology, Regional Medical Center of Orangeburg and Calhoun Counties, Orangeburg, South Carolina, United States
| | - Abdulrahman Altheaby
- Department of the Organ Transplant Center, Division of Adult Transplant Nephrology, King Abdulaziz Medical City, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Saleh Kaysi
- Department of Medicine, Division of Nephrology, CHU, Clermont-Ferrand, France
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17
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Abstract
The kidney is one of the target organs that may show health disorders as a result of obesity. Obesity-related glomerulopathy (ORG) is a kidney disease category based on a biopsy diagnosis that may occur secondary to obesity. Detailed clinicopathologic observations of ORG have provided significant knowledge regarding obesity-associated renal complications. Glomerulomegaly with focal segmental glomerulosclerosis of perihilar locations is a typical renal histopathologic finding in ORG, which has long been considered to represent a state of single-nephron glomerular hyperfiltration. This hypothesis was recently confirmed in ORG patients by estimating single-nephron glomerular filtration rate using a combined image analysis and biopsy-based stereology. Overshooting in glomerulotubular and tubuloglomerular interactions may lead to glomerular hyperfiltration/hypertension, podocyte failure, tubular protein-traffic overload, and tubulointerstitial scarring, constituting a vicious cycle of a common pathway to the further loss of functioning nephrons and the progression of kidney functional impairment.
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Affiliation(s)
- Nobuo Tsuboi
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
| | - Yusuke Okabayashi
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
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18
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Extracellular fluid volume: A suitable indexation variable to assess impact of bariatric surgery on glomerular filtration rate in patients with chronic kidney disease. PLoS One 2021; 16:e0256234. [PMID: 34398928 PMCID: PMC8366966 DOI: 10.1371/journal.pone.0256234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 08/02/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Bariatric surgery (BS) might be a nephroprotective treatment in obese patients with chronic kidney disease (CKD), and the non-linear relation between body surface area (BSA) and extracellular fluid volume (ECFV) in obese people raises the question of the most relevant way to scale glomerular filtration rate (GFR) for assessing renal function changes after BS. METHODS We screened 1774 BS candidates and analysed 10 consecutive participants with CKD stage 3. True GFR (mGFR), measured by the renal clearance of 51Cr-ethylenediaminetetraacetic acid (EDTA), was scaled either to BSA (mGFRBSA) or to ECFV measured by 51Cr-EDTA distribution volume (mGFRECFV) before and one year after BS. RESULTS The 10 candidates for BS had a mean body mass index of 43.3 ± 3.6 kg/m2 and a mean GFR of 48 ± 8 mL/min/1.73 m2. Six participants had a sleeve gastrectomy and four had a Roux-en-Y gastric bypass. One year after BS, ECFV decreased (23.2 ± 6.2 to 17.9 ± 4.3 L, p = 0.001), absolute mGFR was not significantly modified (74 ± 23 versus 68 ±19 mL/min), mGFRBSA did not change significantly (53 ± 18 versus 56 ± 17 mL/min/1.73 m2) whereas mGFRECFV significantly increased (42 ± 13 versus 50 ± 14 mL/min/12.9 L, p = 0.037). The relation between mGFRECFV and mGFRBSA was different from the identity line before (p = 0.014) but not after BS (p = 0.09). CONCLUSION There is a difference between mGFRBSA and mGFRECFV following BS and the latter might better reflect the adequacy between renal function and corpulence.
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19
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Mohamed MM, Daoud A, Quadri S, Casey MJ, Salas MAP, Rao V, Fülöp T, Soliman KM. Hypertension and obesity in living kidney donors. World J Transplant 2021; 11:180-186. [PMID: 34164293 PMCID: PMC8218343 DOI: 10.5500/wjt.v11.i6.180] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/26/2021] [Accepted: 05/22/2021] [Indexed: 02/06/2023] Open
Abstract
Over the past few decades, the shortage in the kidney donor pool as compared to the increasing number of candidates on the kidney transplant waitlist led to loosening of kidney donors’ acceptance criteria. Hypertension and obesity represent risk factors for chronic kidney disease, both in native kidneys and those in kidney transplant recipients. While great progress has been made in kidney transplantation from living donors to benefit the recipient survival and quality of life, progress has been slow to fully risk-characterize the donors. This review critically reassesses the current state of understanding regarding the risk of end-stage kidney disease in those donors with obesity, hypertension or both. Accurate risk assessment tools need to be developed urgently to fully understand the risk glomerular filtration rate compensation failure in the remaining kidney of the donors.
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Affiliation(s)
- Mahmoud M Mohamed
- Department of Medicine, Division of Nephrology, University of Tennessee, Memphis, TN 38163, United States
| | - Ahmed Daoud
- Department of Medicine, Division of Nephrology, Cairo University, Cairo 11562, Egypt
| | - Syed Quadri
- Department of Medicine, Division of Nephrology, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Michael J Casey
- Department of Medicine, Division of Nephrology, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Mariah Aurora Posadas Salas
- Department of Medicine, Division of Nephrology, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Vinaya Rao
- Department of Medicine, Division of Nephrology, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Tibor Fülöp
- Department of Medicine, Division of Nephrology, Medical University of South Carolina, Charleston, SC 29425, United States
- Medicine Service, Ralph H. Johnson VA Medical Center, Charleston, SC 29401, United States
| | - Karim M Soliman
- Department of Medicine, Division of Nephrology, Medical University of South Carolina, Charleston, SC 29425, United States
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20
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Quero M, Montero N, Rama I, Codina S, Couceiro C, Cruzado JM. Obesity in Renal Transplantation. Nephron Clin Pract 2021; 145:614-623. [PMID: 33975320 DOI: 10.1159/000515786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 03/08/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Data from the WHO show an increasing rate of overweight and obesity in general population in the last decades. This increase in obesity also affects population with end-stage renal disease (ESRD) and kidney transplant (KT) candidates. SUMMARY In this review, we focused on how obesity impacts on KT stages: access to KT and outcomes of KT candidates; how to reduce weight and its consequences; short and long-term outcomes in obese recipients and the impact of weight variations; and the implications of obesity in living donor KT. We searched MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials until November 30, 2020. We selected systematic reviews and meta-analyses and randomized clinical trials. When no such reports were found for a topic, observational studies were included in the assessment. Key Messages: Although obesity is a risk factor to present worst outcomes after KT, several studies have demonstrated a survival benefit compared to patients who continue on dialysis. There is a need for a public health campaign to raise awareness in KT candidates and to highlight the importance of self-care, increasing exercise, healthy diet, and weight loss.
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Affiliation(s)
- Maria Quero
- Nephrology Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain, .,Biomedical Research Institute (IDIBELL), Hospital Duran i Reynals, L'Hospitalet de Llobregat, Spain, .,Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, L'Hospitalet de Llobregat, Spain,
| | - Nuria Montero
- Nephrology Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain.,Biomedical Research Institute (IDIBELL), Hospital Duran i Reynals, L'Hospitalet de Llobregat, Spain.,Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, L'Hospitalet de Llobregat, Spain
| | - Inés Rama
- Nephrology Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain.,Biomedical Research Institute (IDIBELL), Hospital Duran i Reynals, L'Hospitalet de Llobregat, Spain
| | - Sergi Codina
- Nephrology Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain.,Biomedical Research Institute (IDIBELL), Hospital Duran i Reynals, L'Hospitalet de Llobregat, Spain
| | - Carlos Couceiro
- Nephrology Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain
| | - Josep M Cruzado
- Nephrology Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain.,Biomedical Research Institute (IDIBELL), Hospital Duran i Reynals, L'Hospitalet de Llobregat, Spain.,Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, L'Hospitalet de Llobregat, Spain
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21
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Locke JE, Shelton B, Orandi B, Olthoff K, Pomfret E, Forde KA, Sawinski D, Gray M, Ascher N. Obesity is a risk factor for progression to kidney transplant waitlisting after liver transplantation. Clin Transplant 2021; 35:e14317. [PMID: 33866616 DOI: 10.1111/ctr.14317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 03/26/2021] [Accepted: 04/06/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Non-alcoholic steatohepatitis has emerged as a leading cause of cirrhosis, and obesity-associated comorbidities, including renal disease, have increased in prevalence. Obesity predisposes the kidney to hyperfiltration injury, potentially impairing acute kidney injury recovery. Identification of patients at risk for renal dysfunction is impeded by poor performance of renal function estimating equations among cirrhotics. To better understand obesity among cirrhotics and renal disease progression, we examined likelihood of kidney transplantation (KT) waitlisting after liver transplant alone (LTA) by obesity class. METHODS 68 607 LTA recipients were identified in SRTR (2005-2018). Fine and Gray competing risks models were used to analyze likelihood of KT waitlisting. RESULTS 27.4% of recipients were obese (BMI ≥ 30 kg/m2 ) and were 10% more likely to require KT waitlisting (aHR: 1.10, 95%CI: 1.01-1.20). Risk was highest among recipients with Classes II and III obesity (BMI: ≥35 kg/m2 ) (aHR: 1.37, 95%CI: 1.17-1.56). Moreover, recipients with Classes II and III obesity were 57% more likely to require KT waitlisting within one year post-LTA (aHR: 1.57, 95%CI: 1.18-2.10) compared to non-obese recipients. DISCUSSION These findings suggest obesity was a risk factor for renal recovery failure and/or renal disease progression post-LTA and may confound identification of renal dysfunction and/or prediction of renal recovery among cirrhotics.
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Affiliation(s)
- Jayme E Locke
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Brittany Shelton
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Babak Orandi
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Kim Olthoff
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | - Kimberly A Forde
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Deirdre Sawinski
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Meagan Gray
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Nancy Ascher
- University of California at San Francisco School of Medicine, San Francisco, CA, USA
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22
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Valensi P, Prévost G, Pinto S, Halimi JM, Donal E. The impact of diabetes on heart failure development: The cardio-renal-metabolic connection. Diabetes Res Clin Pract 2021; 175:108831. [PMID: 33895192 DOI: 10.1016/j.diabres.2021.108831] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/14/2021] [Accepted: 04/17/2021] [Indexed: 01/01/2023]
Abstract
Heart failure (HF) and chronic kidney disease (CKD) are often associated in type 2 diabetes (T2D), aggravate each other and exert synergistic effects to increase the risk of cardiac and renal events. The risks of renal worsening in HF patients and HF in CKD patients need to be evaluated to tailor preventive therapy. The recent CV and renal trials enriched our knowledge about the natural history of HF and CKD in T2D and provided evidence for the benefit of sodium-glucose cotransporter 2 inhibitors (SGLT2is) in HF and renal decline prevention. SGLT-2is are the best choice in patients with HFrEF to improve CV prognosis and HF-related outcomes and also to prevent kidney-related outcomes, and in CKD patients to slow down renal failure and also reduce hospitalization for HF and CV death. In both situations the number of patients to treat in order to prevent such events in one patient is lower than in the general T2D population at high CV risk. GLP1-receptor agonists could be an alternative in a patient who is intolerant or has a contraindication to SGLT-2is. A tight collaboration between diabetologists, nephrologists and cardiologists should be encouraged for a holistic and effective strategy to reduce the burden of cardio-renal-metabolic interaction.
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Affiliation(s)
- Paul Valensi
- Unit of Endocrinology-Diabetology-Nutrition, AP-HP, Jean Verdier Hospital, Paris 13 University, Sorbonne Paris Cité, CRNH-IdF, CINFO, Bondy, France.
| | - Gaétan Prévost
- Department of Endocrinology, Diabetes and Metabolic Diseases, Normandie Univ, UNIROUEN, Rouen University Hospital, 76000 Rouen, France
| | - Sara Pinto
- Unit of Endocrinology-Diabetology-Nutrition, AP-HP, Jean Verdier Hospital, Paris 13 University, Sorbonne Paris Cité, CRNH-IdF, CINFO, Bondy, France
| | - Jean-Michel Halimi
- Department of Nephrology, CHU Tours, France and EA4245, Tours University, Tours, France
| | - Erwan Donal
- Department of Cardiology, University of Rennes, CHU Rennes, INSERM, LTSI-UMR 1099, Rennes, France
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23
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Sandino J, Luzardo L, Morales E, Praga M. Which Patients with Obesity Are at Risk for Renal Disease? Nephron Clin Pract 2021; 145:595-603. [PMID: 33677441 DOI: 10.1159/000513868] [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: 07/08/2020] [Accepted: 12/16/2020] [Indexed: 11/19/2022] Open
Abstract
Obesity-related glomerulopathy (ORG) is an increasingly recognized cause of end-stage kidney disease. The most common clinical presentation is a slowly increasing nonnephrotic proteinuria that is followed by a progressive decline of kidney function. Key histological findings are glomerulomegaly and lesions of focal and segmental glomerulosclerosis. A central pathogenic mechanism is the increased sodium reabsorption by proximal tubules that typically accompanies obesity. This causes a decrease in the offer of sodium to the macula densa in the distal nephron, which results in a vasodilation of afferent glomerular arterioles and glomerular hyperfiltration. From a clinical point of view, it is essential to differentiate focal segmental glomerulosclerosis secondary to obesity from primary glomerular processes, which requires a careful differential diagnosis. Diet-induced weight loss, bariatric surgery, and renin-angiotensin blockers are the fundamental therapeutic measures in ORG. The recently developed sodium-glucose cotransporter 2 inhibitors and glucagon-like peptide 1 agonist represent a significant advance in renal protection and will probably improve clinical kidney outcomes in ORG.
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Affiliation(s)
- Justo Sandino
- Department of Nephrology, University Hospital "12 de Octubre", Madrid, Spain
| | - Leonella Luzardo
- Nephrology Center, Hospital de Clínicas, Universidad de la República, Montevideo, Uruguay
| | - Enrique Morales
- Department of Nephrology, University Hospital "12 de Octubre", Madrid, Spain, .,Research Institute of University Hospital "12 de Octubre" (imas12), Madrid, Spain, .,Department of Medicine, Complutense University of Madrid, Madrid, Spain,
| | - Manuel Praga
- Department of Nephrology, University Hospital "12 de Octubre", Madrid, Spain.,Research Institute of University Hospital "12 de Octubre" (imas12), Madrid, Spain.,Department of Medicine, Complutense University of Madrid, Madrid, Spain
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24
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Jung SW, Cho M, Oh W, Ko GJ, Moon JY, Lee SH, Kim YG. Incremental Effect of Aging on Obesity-Related Incident Chronic Kidney Disease in the Korean General Population. J Am Med Dir Assoc 2020; 22:1751-1756.e2. [PMID: 33238141 DOI: 10.1016/j.jamda.2020.10.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/16/2020] [Accepted: 10/19/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Obesity may increase the risk of kidney function decline. However, few studies have addressed how age modifies obesity-associated risk of chronic kidney disease (CKD) in the Asian general population. DESIGN A community-based prospective cohort study. SETTING AND PARTICIPANTS 6538 Korean general population with normal kidney function from the Korean Genome and Epidemiology Study Database. METHODS Participants were stratified according to age (40-49, 50-59, and 60-69 years old) and body mass index [≥18.5-<23 (normal-weight), ≥23-<27.5 (overweight), and ≥27.5 (obese)]. We conducted Kaplan-Meier and multivariable-adjusted Cox regression analyses to investigate the association of aging and obesity with incident CKD. RESULTS During the 12-year follow-up, an overall incidence rate of CKD was 6.1 cases per 1000 person-years. Obese, but not overweight, people had an increased risk of incident CKD compared with normal-weight people in multivariable models adjusted for metabolic factors. When analyzed by 10-year increments, this association was significant only in 60-69-year-old individuals. Kaplan-Meier analysis showed that the incidence of CKD associated with overweight or obesity showed an accentuated increase with age. With reference to normal-weight individuals aged 40-49 years, the adjusted hazard ratio of CKD increased with age regardless of body mass index, and the positive association between obesity and incident CKD was more prominent with increasing age. CONCLUSIONS AND IMPLICATIONS Obesity-associated risk of incident CKD was accentuated in older people, and this association was independent of metabolic abnormalities.
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Affiliation(s)
- Su Woong Jung
- Division of Nephrology, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea
| | - Minhae Cho
- School of Social Work, University of Memphis, Memphis, TN, USA
| | - Wonsuk Oh
- Institute for Health Informatics, University of Minnesota, Minneapolis, MN, USA
| | - Gang Jee Ko
- Division of Nephrology, Department of Internal Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Ju-Young Moon
- Division of Nephrology, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea
| | - Sang-Ho Lee
- Division of Nephrology, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea
| | - Yang Gyun Kim
- Division of Nephrology, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea.
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25
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Shields CA, Poudel B, McPherson KC, Brown AK, Ekperikpe US, Browning E, Sutton L, Cornelius DC, Williams JM. Treatment With Gemfibrozil Prevents the Progression of Chronic Kidney Disease in Obese Dahl Salt-Sensitive Rats. Front Physiol 2020; 11:566403. [PMID: 33071820 PMCID: PMC7533555 DOI: 10.3389/fphys.2020.566403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/27/2020] [Indexed: 11/24/2022] Open
Abstract
Recently, we reported that Dahl salt-sensitive leptin receptor mutant (SSLepRmutant) rats exhibit dyslipidemia and renal lipid accumulation independent of hyperglycemia that progresses to chronic kidney disease (CKD). Therefore, in the current study, we examined the effects of gemfibrozil, a lipid-lowering drug (200 mg/kg/day, orally), on the progression of renal injury in SS and SSLepRmutant rats for 4 weeks starting at 12 weeks of age. Plasma triglyceride levels were markedly elevated in the SSLepRmutant strain compared to SS rats (1193 ± 243 and 98 ± 16 mg/day, respectively). Gemfibrozil treatment only reduced plasma triglycerides in the SSLepRmutant strain (410 ± 79 mg/dL). MAP was significantly higher in the SSLepRmutant strain vs. SS rats at the end of the study (198 ± 7 vs. 165 ± 7 mmHg, respectively). Administration of gemfibrozil only lowered MAP in SSLepRmutant rats (163 ± 8 mmHg). During the course of the study, proteinuria increased to 125 ± 22 mg/day in SS rats. However, proteinuria did not change in the SSLepRmutant strain and remained near baseline (693 ± 58 mg/day). Interestingly, treatment with gemfibrozil increased the progression of proteinuria by 77% in the SSLepRmutant strain without affecting proteinuria in SS rats. The renal injury in the SSLepRmutant strain progressed to CKD. Moreover, the kidneys from SSLepRmutant rats displayed significant glomerular injury with mesangial expansion and increased renal lipid accumulation and fibrosis compared to SS rats. Treatment with gemfibrozil significantly reduced glomerular injury and lipid accumulation and improved renal function. These data indicate that reducing plasma triglyceride levels with gemfibrozil inhibits hypertension and CKD associated with obesity in SSLepRmutant rats.
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Affiliation(s)
- Corbin A. Shields
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Bibek Poudel
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Kasi C. McPherson
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Andrea K. Brown
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Ubong S. Ekperikpe
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Evan Browning
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Lamari Sutton
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Denise C. Cornelius
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
- Department of Emergency Medicine, University of Mississippi Medical Center, Jackson, MS, United States
| | - Jan M. Williams
- Department of Experimental Therapeutics and Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
- *Correspondence: Jan M. Williams,
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26
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Kopylov VY. Сhanges in the functional state of the epithelium of the proximal renal tubules in patients with the initial stage of chronic heart failure during simvastatin therapy. Klin Lab Diagn 2020; 65:602-606. [PMID: 33245648 DOI: 10.18821/0869-2084-2020-65-10-602-606] [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] [Indexed: 06/11/2023]
Abstract
To assess the change in the functional state of the proximal renal tubule epithelium in patients with dyslipidemia on the background of obesity, by determining the concentration in the urine of the examined level of cystatin C and the degree of activity of the renal organ-specific enzymes neutral α-glucosidase (NAG) and L-alaninaminopeptidase (laap) during simvastatin therapy at a daily dose of 20 mg for 6 months. The study involved 88 people who were divided into three groups: control, comparison and main. The control group is a group of practically healthy individuals: 30 people, average age 20.67 ± 0.18 years, body mass index (BMI) 21.36 ± 0.4 kg/m2. Comparison group (obese): 27 people, average age 22.38 ± 0.76 years, BMI 31.48 ± 0.56 kg / m2. Patients of the main group were divided into 2 subgroups. The first main subgroup of persons with chronic heart failure stage I (CHF I) without type 2 diabetes mellitus (DM 2)) - 15 observed: average age 56.8 ± 1.8 years, BMI 30.28 ± 1.11 kg / m2. The second main subgroup (CHF I with DM 2) - 16 observed: average age 48.25 ± 2.45 years, BMI 30.37 ± 1.11 kg/m2. The study found that simvastatin therapy does not affect glomerular filtration rate in patients with asymptomatic heart dysfunction. There was an increased level of cystatin C in the urine of the comparison group compared to the control group, the concentration of cystatin C in the main subgroups was statistically significantly higher than the control group. On the background of simvastatin therapy for 6 months, the level of this analyte is statistically significantly increased. The activity of LAAP and NAG during simvastatin therapy during the follow-up period in the CHF I subgroup without DM2 significantly decreased. In the subgroup of CHF I + DM2, a decrease in the concentration of LAAP and an increase in the activity of NAG was revealed, which may indicate that the brush border epithelium dystrophy occurred during simvastatin therapy. Simvastatin therapy for 6 months in patients with the initial stage of heart failure at a daily dosage of 20 mg does not impair glomerular function in the form of reduced glomerular filtration rate (GFR). Cystatin C levels are higher in obese individuals without heart failure and significantly higher in those with asymptomatic heart failure. When treating dyslipidemia with simvastatin at a dose of 20 mg / day, there is a decrease in the activity of NAG and laap in patients with CHF I without DM2. In the result of lipid-lowering therapy with simvastatin in a daily dosage of 20 mg in patients with CHF I+D2M there is increased activity of NAG while reducing the concentration of the LAAP, which may be due to degeneration of the proximal tubular epithelium, amid additional load on a partially renal route of metabolism of simvastatin.
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27
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Melkonian V, Nguyen MTJP. Managing the Obese Living Kidney Donor. CURRENT TRANSPLANTATION REPORTS 2020. [DOI: 10.1007/s40472-020-00279-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
Long-term safety of living kidney donation (LKD), especially for young donors, has become a real matter of concern in the transplant community and may contribute to creating resistance to LKD. In this context, the criteria that govern living donor donations must live up to very demanding standards as well as adjust to this novel reality. In the first part, we review the existing guidelines published after 2010 and critically examine their recommendations to see how they do not necessarily lead to consistent and universal practices in the choice of specific thresholds for a parameter used to accept or reject a living donor candidate. In the second part, we present the emergence of a new paradigm for LKD developed in the 2017 Kidney Disease: Improving Global Outcomes guidelines with the introduction of an integrative risk-based approach. Finally, we focus on predonation renal function evaluation, a criteria that remain central in the selection process, and discuss several issues surrounding the donor candidate's glomerular filtration rate assessment.
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29
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Naik AS, Afshinnia F, Aqeel J, Cibrik DM, Samaniego M, Wickman L, Wang SQ, Chowdhury M, Wiggins RC. Accelerated podocyte detachment early after kidney transplantation is related to long-term allograft loss of function. Nephrol Dial Transplant 2020; 34:1232-1239. [PMID: 30500951 DOI: 10.1093/ndt/gfy350] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Kidney allograft half-life has not improved despite excellent short-term survival. Recent long-term surveillance biopsy studies identify accumulating glomerulosclerosis (GS) to be associated with late allograft loss. While podocyte depletion is well known to drive proteinuria and GS in animal models and human glomerular diseases, its role in renal allograft loss of function is generally not recognized. METHODS To address these questions, we collected urine from 125 kidney allograft recipients in the first posttransplant year for urine pellet messenger RNA (mRNA) and protein analysis, with a median follow up of 4.5 years. RESULTS Using multivariable linear models adjusted for proteinuria, transplant, recipient and donor factors, we observed that the average urine pellet podocin mRNA normalized to urine creatinine (UPodCR) in the first posttransplant year was significantly associated with an estimated glomerular filtration rate (eGFR) decline (P = 0.001). The relationship between UPodCR and eGFR decline persisted even among recipients who were nonproteinuric and who had no recurrent or de novo glomerular disease identified on 1-year protocol biopsy. Finally, we identified recipient, donor and recipient:donor body surface area mismatch ratio to be independently associated with UPodCR early after transplantation. A larger donor was protective, while a larger recipient and increased recipient:donor size mismatch ratio were associated with increased UPodCR. CONCLUSIONS These findings support the concept that in kidney allografts, accelerated podocyte loss precedes proteinuria and is associated with inferior long-term allograft outcomes as measured by eGFR decline and may be initiated by recipient:donor size mismatch. Modulating factors driving early podocyte detachment after kidney transplantation may help improve long-term outcomes.
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Affiliation(s)
- Abhijit S Naik
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Farsad Afshinnia
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Jawad Aqeel
- College of Literature, Science, and the Arts, University of Michigan, Ann Arbor, MI, USA
| | - Diane M Cibrik
- Department of Internal Medicine, University of Kansas, Kansas City, KS, USA
| | | | - Larysa Wickman
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI, USA
| | - Su Q Wang
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Mahboob Chowdhury
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Roger C Wiggins
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
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30
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Andrade HS, Srougi V, Arap MA, Mitre AI, Camargo CP, Zargar H, Kaouk JH, Nahas WC, Srougi M, Duarte RJ. Postoperative Renal Function in Patients Undergoing Unilateral Nephrectomy: Development of a Prediction Model Using Preoperative Risk Factors and 51Cr-EDTA Clearance. J Endourol 2020; 34:394-399. [PMID: 31973616 DOI: 10.1089/end.2019.0546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Objectives: To analyze the preoperative variables associated to the postoperative glomerular filtration rate (GFR) outcomes after nephrectomy for benign and malignant conditions, measured by the reference isotopic technique 51Cr-ethylene diamine tetra-acetic (51Cr-EDTA) and to create a model to predict the short-term postoperative GFR. Secondary aim was to evaluate which of the common equations for GFR estimation (Cockcroft-Gault, Modification of Diet in Renal Disease [MDRD] or Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) has the best correlation with the 51Cr-EDTA. Methods: Patients undergoing unilateral nephrectomy from 2014 to 2018 were selected. Pre- and postoperative variables were prospectively collected. Univariate and multivariate analyses were done to identify independent risk factors associated with renal function outcomes and to create a model to predict the postoperative GFR. Correlation analyses were performed to evaluate the performance of various serum creatinine-based equations for GFR estimation compared with 51Cr-EDTA. Results: In total, 107 patients were evaluated. After univariate and multivariate analyses, older age (p = 0.008), higher split function of the operated kidney on dimercaptosuccinic acid (DMSA) scintigraphy (p < 0.001), and lower preoperative 51Cr-EDTA (p < 0.001) were independent risk factors for higher GFR decline. Correlation analyses showed that GFR estimated by CKD-EPI equation had the best concordance to GFR measured by 51Cr-EDTA. Conclusions: Based on our findings age, DMSA and lower preoperative 51Cr-EDTA are predictors of postoperative renal function after unilateral nephrectomy. For the assessment of estimated GFR, CKD-EPI equation appears to have the best concordance with 51Cr-EDTA.
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Affiliation(s)
- Hiury S Andrade
- Department of Urology, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil
| | - Victor Srougi
- Department of Urology, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil
| | - Marco A Arap
- Department of Urology, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil.,Hospital Sirio Libanes, Sao Paulo, Brazil
| | - Anuar I Mitre
- Department of Urology, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil.,Hospital Sirio Libanes, Sao Paulo, Brazil
| | | | - Homayoun Zargar
- Department of Urology, Royal Melbourne Hospital, University of Melbourne, Melbourne, Australia
| | - Jihad H Kaouk
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio
| | - Willian C Nahas
- Department of Urology, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil
| | - Miguel Srougi
- Department of Urology, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil
| | - Ricardo J Duarte
- Department of Urology, Clinicas Hospital, University of Sao Paulo, Sao Paulo, Brazil
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31
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Jimenez-Romero ME, Moreno-Cortes JC, Canelon-Castillo EY, Diez-Farto S, Santotoribio JD. Predictive Factors of Renal Function in Partial Laparoscopic Nephrectomy in Patients with a Kidney Tumor. Curr Urol 2019; 13:150-156. [PMID: 31933594 DOI: 10.1159/000499277] [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: 12/04/2018] [Accepted: 01/10/2019] [Indexed: 01/08/2023] Open
Abstract
Background Laparoscopic partial nephrectomy has proven to be an ideal option for tumors in initial stages, preserving part of the renal parenchyma and reducing the possible risk of glomerular filtration decrease. Objectives The main objective of this study is to determine the factors that can influence, to a greater extent, renal function deterioration after surgery. Methods This is an observational, descriptive and longitudinal study. The renal funct ion was calculated using the Chronic Kidney Disease Epidemiology Collaboration formula, and patients were divided into 2 groups depending on whether or not their renal function had been affected after surgery. We studied the correlation between the decrease of renal function and other variables. Results The sample comprised 48 patients. In 30 of these cases, renal function had deteriorated after surgery. We observed a statistically significant relationship between the weight of the patient (p = 0.0230), size of the tumor (p = 0.0035), ischemic time (p = 0.0287), duration of the surgery (p = 0.0297), the RENAL score (p = 0.0230) and renal function deterioration. Conclusions Partial laparoscopic nephrectomy is associated with a deterioration in renal function, where there is a decrease in glomerular filtration after surgery. The deterioration will depend on the weight of the patient, size of the tumour, ischemic time and duration of the surgery. The RENAL score can be used to predict said deterioration.
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Affiliation(s)
- Miguel E Jimenez-Romero
- Department of Urology, Puerto Real University Hospital.,Department of Surgery, Cadiz University School of Medicine
| | | | | | | | - Jose D Santotoribio
- Department of Laboratory Medicine, Puerto Real University Hospital.,Department of Biomedicine, Biotechnology and Public Health, Cadiz University School of Medicine, Cadiz, Spain
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32
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Donation approval among obese living kidney donor candidates: The impact of metabolic syndrome. Surgery 2019; 166:940-946. [PMID: 31444005 DOI: 10.1016/j.surg.2019.07.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 07/02/2019] [Accepted: 07/07/2019] [Indexed: 01/03/2023]
Abstract
BACKGROUND The scarcity of organs available for transplantation has increased attempts to augment transplantation by utilizing obese living kidney donors. The literature has suggested that these donors have increased risks postdonation. Not surprising, the threshold for living kidney donor approval among obese persons is typically higher and the process more costly. Therefore, a screening tool to predict the likelihood of approval among obese living kidney donor candidates was created. METHODS A single-center retrospective study was performed among obese (body mass index ≥ 30 kg/m2) living kidney donor candidates evaluated in clinic (January 1, 2012, to December 31, 2017). Approved candidates were compared with those not approved using multivariable logistic regression, and a prediction tool was generated. RESULTS Among 389 obese living kidney donor candidates, there were no significant differences in sex or race and ethnicity by approval status. However, nonapproved candidates had a higher prevalence of metabolic syndrome. In the prediction model, glucose impairment and hypertension were most predictive of nonapproval. CONCLUSION Among obese living kidney donor candidates, several metabolic syndrome components were associated with decreased odds of approval. This tool may serve as a useful initial screening for obese living kidney donor candidates, permitting more cost-effective evaluation processes. The tool could also be used to promote expeditious interventions in the preclinical setting, including weight management programs, to improve the likelihood of donation and postdonation outcomes.
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33
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Hand-Assisted Nephrectomy Predisposes Incisional Herniation in Obese Living Donors. Transplant Proc 2019; 51:2210-2214. [PMID: 31378469 DOI: 10.1016/j.transproceed.2019.02.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 02/17/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Living kidney donation from donors with a body mass index (BMI) over 30 can bring risks for the donor and the recipients. In this retrospective study, we evaluated the effect of a donor's obesity on a donor's long-term surveillance and the recipient outcomes. METHOD We performed hand-assisted retroperitoneoscopic donor nephrectomy in 565 living kidney transplantations between February 2009 and December 2015. One hundred fifty-two donors (26.9%) had a BMI > 30 and were described as the obese group. Four hundred thirteen donors (73.1%) were described as the nonobese group and had a BMI < 30. Incision to kidney removal time, mean follow-up period, postoperative complications, weight gained after surgery, and serum creatinine level (postop day 1-end of follow-up) were recorded for the donors. Serum creatinine level (postop day 5-end of follow-up) and immediate function of transplanted kidney were recorded for the recipients. RESULTS The obese donors were older, and the female sex was dominant. Mean incision to kidney removal period was longer in the obese patients (P = .012). The mean follow-up period was 49.97 ± 28.40 months for the donors. There was no significant difference in donor kidney function between the groups. The incidence of herniation was significantly higher in the obese group (P = .021). There was no significant difference between the recipient early and late serum creatinine levels and slow and delayed graft functions after the transplantation. CONCLUSION Postoperative kidney functions concerning the outcomes of the obese and nonobese living donors were similar in our series. Donor BMI had no influence on early and late kidney functions of the recipients. There was no difference in postoperative complications, except incisional hernia, that was statistically more significant in the obese donors.
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34
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Hirai T, Shuji Y, Takiyama M, Hanada K, Itoh T. Renin-angiotensin system inhibitors for countering proteinuria induced by angiogenesis inhibitors: a retrospective observational analysis. Cancer Chemother Pharmacol 2019; 84:195-202. [PMID: 31119376 DOI: 10.1007/s00280-019-03876-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 05/14/2019] [Indexed: 12/20/2022]
Abstract
PURPOSE Occurrence of proteinuria could result in cessation of bevacizumab and ramucirumab treatments. Renin-angiotensin system (RAS) inhibitors exert a renoprotective effect by countering proteinuria. However, the association between renoprotective effect of RAS inhibitors and blood pressure control is unclear. This study assessed the risk factors for proteinuria induced by bevacizumab or ramucirumab and the relationship between renoprotective effect of RAS inhibitors and blood pressure control. METHODS A retrospective observational analysis was conducted at Tokyo Women's Medical University, Medical Center East from June 2015 to May 2018. Multivariate logistic regression analysis was used to identify risk factors for proteinuria induced by treatment with bevacizumab and ramucirumab. Renoprotective effect was assessed by analyzing blood pressure data in association with the use of RAS inhibitors. RESULTS Out of 208 patients included in this study, proteinuria was observed in 50 (24%) patients. Body mass index ≥ 24 kg/m2 (OR = 2.45, 95% CI 1.21-4.96, p = 0.01), colorectal cancer (OR = 1.95, 95% CI 1.00-3.80, p < 0.05), and use of RAS inhibitors (OR = 0.25 95% CI 0.07-0.92, p = 0.04) were associated with proteinuria induced by treatment with bevacizumab and ramucirumab. A change in systolic blood pressure at second visit was higher in patients with RAS inhibitors compared with those in patients without RAS inhibitors (25 mmHg vs - 5 mmHg, p = 0.04). CONCLUSION Although RAS inhibitors protected patients from proteinuria induced by bevacizumab or ramucirumab, RAS inhibitors could not adequately control their blood pressures in patients with proteinuria.
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Affiliation(s)
- Toshinori Hirai
- Department of Pharmacy, Tokyo Women's Medical University, Medical Center East, 2-1-10, Nishiogu, Arakawa-ku, Tokyo, 116-0011, Japan.
| | - Yukari Shuji
- Department of Pharmacy, Tokyo Women's Medical University, Medical Center East, 2-1-10, Nishiogu, Arakawa-ku, Tokyo, 116-0011, Japan
| | - Megumi Takiyama
- Department of Pharmacy, Tokyo Women's Medical University, Medical Center East, 2-1-10, Nishiogu, Arakawa-ku, Tokyo, 116-0011, Japan
| | - Kazuhiko Hanada
- Department of Pharmacometrics and Pharmacokinetics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Toshimasa Itoh
- Department of Pharmacy, Tokyo Women's Medical University, Medical Center East, 2-1-10, Nishiogu, Arakawa-ku, Tokyo, 116-0011, Japan
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Schelb JE, De Paula RB, Ezequiel DGA, Costa MB. Obesidade e doença renal: aspectos fisiopatológicos. HU REVISTA 2019. [DOI: 10.34019/1982-8047.2018.v44.13982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A epidemia de obesidade observada nas últimas décadas é acompanhada de aumento exponencial de doenças crônicas relacionadas, com destaque diabetes mellitus tipo 2, hipertensão arterial sistêmica, dislipidemia e doenças cardiovasculares. Do mesmo modo, a obesidade constitui fator de risco independente para o desenvolvimento de doença renal crônica, condição associada a elevados índices de morbidade e de mortalidade. A obesidade causa lesão renal de maneira indireta, por meio de sua estreita associação com hipertensão arterial sistêmica e com diabetes mellitus tipo 2 e de maneira direta, ao induzir adaptações glomerulares que culminam na glomerulopatia específica da obesidade. Além disso, o excesso de peso contribui para o agravamento de glomerulopatias pré-existentes. Múltiplos fatores explicam o desenvolvimento e o agravamento das lesões renais associadas à obesidade, em especial alterações hemodinâmicas, inflamatórias e metabólicas. Nesse contexto, a redução do peso corporal com ênfase nas alterações metabólicas e inflamatórias bem como o tratamento da hipertensão arterial e do diabetes mellitus constituem o primeiro passo para a prevenção primária e secundária do desenvolvimento de doença renal crônica. Nesta revisão serão apresentados os principais mecanismos fisiopatológicos da lesão renal associada à obesidade.
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McPherson KC, Shields CA, Poudel B, Fizer B, Pennington A, Szabo-Johnson A, Thompson WL, Cornelius DC, Williams JM. Impact of obesity as an independent risk factor for the development of renal injury: implications from rat models of obesity. Am J Physiol Renal Physiol 2018; 316:F316-F327. [PMID: 30539649 DOI: 10.1152/ajprenal.00162.2018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Diabetes and hypertension are the major causes of chronic kidney disease (CKD). Epidemiological studies within the last few decades have revealed that obesity-associated renal disease is an emerging epidemic and that the increasing prevalence of obesity parallels the increased rate of CKD. This has led to the inclusion of obesity as an independent risk factor for CKD. A major complication when studying the relationship between obesity and renal injury is that cardiovascular and metabolic disorders that may result from obesity including hyperglycemia, hypertension, and dyslipidemia, or the cluster of these disorders [defined as the metabolic syndrome, (MetS)] also contribute to the development and progression of renal disease. The associations between hyperglycemia and hypertension with renal disease have been reported extensively in patients suffering from obesity. Currently, there are several obese rodent models (high-fat diet-induced obesity and leptin signaling dysfunction) that exhibit characteristics of MetS. However, the available obese rodent models currently have not been used to investigate the impact of obesity alone on the development of renal injury before hypertension and/or hyperglycemia. Therefore, the aim of this review is to describe the incidence and severity of renal disease in these rodent models of obesity and determine which models are suitable to study the independent effects obesity on the development and progression of renal disease.
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Affiliation(s)
- Kasi C McPherson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Corbin A Shields
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Bibek Poudel
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Brianca Fizer
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Alyssa Pennington
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Ashley Szabo-Johnson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Willie L Thompson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Denise C Cornelius
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi.,Department of Emergency Medicine, University of Mississippi Medical Center , Jackson, Mississippi
| | - Jan M Williams
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
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MESH Headings
- Adipokines/metabolism
- Adipose Tissue, White/metabolism
- Adipose Tissue, White/physiopathology
- Adiposity
- Animals
- Comorbidity
- Energy Metabolism
- Humans
- Inflammation Mediators/metabolism
- Kidney/metabolism
- Kidney/physiopathology
- Obesity/epidemiology
- Obesity/metabolism
- Obesity/physiopathology
- Obesity/therapy
- Obesity, Metabolically Benign/epidemiology
- Obesity, Metabolically Benign/metabolism
- Obesity, Metabolically Benign/physiopathology
- Obesity, Metabolically Benign/therapy
- Prognosis
- Renal Insufficiency, Chronic/epidemiology
- Renal Insufficiency, Chronic/metabolism
- Renal Insufficiency, Chronic/physiopathology
- Renal Insufficiency, Chronic/therapy
- Risk Factors
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Affiliation(s)
- Jay I Lakkis
- University of Hawaii John A. Burns School of Medicine, 95 Maui Lani Pkwy, Wailuku, HI 96793-2416
| | - Mathew R Weir
- Division of Nephrology, University of Maryland School of Medicine, 22 S. Greene St., Room N3W143, Baltimore, MD 21201.
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Krezdorn N, Tasigiorgos S, Wo L, Lopdrup R, Turk M, Kiwanuka H, Ahmed S, Petruzzo P, Bueno E, Pomahac B, Riella LV. Kidney Dysfunction After Vascularized Composite Allotransplantation. Transplant Direct 2018; 4:e362. [PMID: 30046652 PMCID: PMC6056276 DOI: 10.1097/txd.0000000000000795] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 03/26/2018] [Accepted: 04/02/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Kidney dysfunction is a major complication after nonrenal solid organ transplants. Transplantation of vascularized composite allografts (VCA) has yielded successful midterm outcomes despite high rates of acute rejection and greater requirements of immunosuppression. Whether this translates in higher risks of kidney complications is unknown. METHODS Ninety-nine recipients of facial or extremity transplants from the Brigham and Women's Hospital (BWH) and the International Registry on Hand and Composite Tissue Transplantation (IR) were reviewed. We assessed immunosuppression, markers of renal function over time, as well as pretransplant and posttransplant renal risk factors. RESULTS Data were obtained from 10 patients from BWH (age at transplant, 42.5 ± 13.8 years) and 89 patients (37.8 ± 11.5 years) from IR. A significant rise in creatinine levels (BWH, P = 0.0195; IR, P < 0.0001) and drop in estimated glomerular filtration rate (GFR) within the first year posttransplant was observed. The BWH and IR patients lost a mean of 22 mL/min GFR and 60 mL/min estimated GFR in the first year, respectively. This decrease occurred mostly in the first 6 months posttransplant (BWH). Pretransplant creatinine levels were not restored in either cohort. A mixed linear model identified multiple variables correlating with renal dysfunction, particularly tacrolimus trough levels. CONCLUSIONS Kidney dysfunction represents a major complication posttransplantation in VCA recipients early on. Strategies to mitigate this complication, such as reducing calcineurin inhibitor trough levels or using alternative immunosuppressive agents, may improve long-term patient outcomes. Standardizing laboratory and data collection of kidney parameters and risk factors in VCA patients will be critical for better understanding of this complication.
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Affiliation(s)
- Nicco Krezdorn
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Sotirios Tasigiorgos
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Luccie Wo
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Rachel Lopdrup
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Marvee Turk
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Harriet Kiwanuka
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Salman Ahmed
- Transplantation Research Center, Renal Division, Brigham & Women's Hospital, Harvard Medical School, Boston, MA
| | - Palmina Petruzzo
- Department of Transplantation, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
- Department of Surgery, University of Cagliari, Cagliari, Italy
| | - Ericka Bueno
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Bohdan Pomahac
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Leonardo V. Riella
- Transplantation Research Center, Renal Division, Brigham & Women's Hospital, Harvard Medical School, Boston, MA
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Favre G, Schiavo L, Lemoine S, Esnault VLM, Iannelli A. Longitudinal assessment of renal function in native kidney after bariatric surgery. Surg Obes Relat Dis 2018; 14:1411-1418. [PMID: 30077663 DOI: 10.1016/j.soard.2018.05.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/09/2018] [Accepted: 05/16/2018] [Indexed: 12/31/2022]
Abstract
The epidemic of obesity parallels that of chronic kidney disease (CKD). Obesity worsens the course of CKD, mainly defined by an abnormal glomerular filtration rate (GFR). Patients with severe obesity stages (II and III with body mass index >35 kg/m2) are eligible for bariatric surgery (BS), which is the most efficient method of achieving durable weight loss. BS may reverse glomerular hyperfiltration and albuminuria, improve adipocytokine profile, and relieve diabetes and hypertension. Obesity remission after BS might prevent the progression of renal failure in populations with morbid obesity. However, evidence for the beneficial effect of BS on renal function is scant. This lack of knowledge is mainly due to methodologic reasons, which are addressed in this review. The reversibility of hyperfiltration due to the presence of functional renal reserve hampers the interpretation of changes in true GFR after BS. This true GFR is only obtained with the renal clearance of an exogenous filtration marker. Estimation of GFR is generally provided by prediction equations, namely by modification of diet in renal diseases or by chronic kidney disease-epidemiology collaborative group. These equations are not accurate because the serum levels of both creatinine and cystatin C depend on extrarenal factors, which are modified by BS. Comparing the slopes of measured GFR according to various durations of exposure with morbid obesity would be critical in providing reliable data. Herein, we review the current knowledge on the effects of BS on kidney function; we specify the methodologic issues and particularities of the dietary management of CKD patients to propose reliable directions for future clinical research.
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Affiliation(s)
- Guillaume Favre
- Service de Néphrologie-Dialyses-Transplantation, Hôpital Pasteur, Nice; CNRS-UMR 7370 - Laboratoire de Physiomedecine moléculaire, Nice; Université Côte d'Azur, Faculté de Médecine, Nice.
| | - Luigi Schiavo
- Department of Cardio-Thoracic and Respiratory Science, University of Campania Luigi Vanvitelli, Naples, Italy; IX Division of General Surgery, Vascular Surgery, and Applied Biotechnology, Naples University Polyclinic, Naples, Italy
| | - Sandrine Lemoine
- Service de néphrologie et d'exploration fonctionnelle rénale, Lyon, France; Université de Lyon, Université Lyon 1, Villeurbanne, France; Centre de référence des maladies rénales rares, Bron, France
| | - Vincent L M Esnault
- Service de Néphrologie-Dialyses-Transplantation, Hôpital Pasteur, Nice; Université Côte d'Azur, Faculté de Médecine, Nice
| | - Antonio Iannelli
- Université Côte d'Azur, Faculté de Médecine, Nice; Digestive Surgery and Liver Transplantation Unit, Archet 2 Hospital, University Hospital of Nice, Nice, France; INSERM, U1065, Team 8 "Hepatic complications of obesity", Nice, France
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40
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Naik AS, Cibrik DM, Sakhuja A, Samaniego M, Lu Y, Shahinian V, Norman SP, Schnitzler MA, Kasiske BL, Segev DL, Lentine KL. Temporal trends, center-level variation, and the impact of prevalent state obesity rates on acceptance of obese living kidney donors. Am J Transplant 2018; 18:642-649. [PMID: 28949096 DOI: 10.1111/ajt.14519] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/30/2017] [Accepted: 09/16/2017] [Indexed: 01/25/2023]
Abstract
The impact of pre-donation obesity on long-term outcomes of living kidney donors remains controversial. Published guidelines offer varying recommendations regarding BMI (kg/m2 ) thresholds for donor acceptance. We examined temporal and center-level variation in BMI of accepted donors across US transplant centers. Using national transplant registry data, we performed multivariate hierarchical logistic regression modeling using pairwise comparisons (overweight, BMI: 25-29.9; mildly obese, BMI: 30-34.9; very obese, BMI: ≥35; versus normal BMI: 18.5-24.9). Metrics of heterogeneity, including median odds ratio (MOR), were calculated. Among 90 013 living kidney donors, 2001-2016, proportions who were very obese decreased and proportions who were mildly obese or overweight increased. Significant center-level heterogeneity was noted in BMI of accepted donors; the MOR varied from 1.10 for overweight to 1.93 for very obese donors. At centers located in the 10 states with the highest general population obesity rates, adjusted odds of very obese donor status were 185% higher (reference: normal BMI) than in states with the lowest obesity rates. Although there is a declining trend in acceptance of very obese living kidney donors, variation across centers is significant. Furthermore, local population obesity rates may affect the decision to accept obese individuals as donors.
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Affiliation(s)
- Abhijit S Naik
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Diane M Cibrik
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Ankit Sakhuja
- Division of Pulmonary and Critical Care, Mayo Clinic, Rochester, MN, USA
| | - Milagros Samaniego
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Yee Lu
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Vahakn Shahinian
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Silas P Norman
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Mark A Schnitzler
- Saint Louis University Center for Abdominal Transplantation, St. Louis, MO, USA
| | - Bertram L Kasiske
- Hennepin County Medical Center, Minneapolis, MN, USA.,Scientific Registry of Transplant Recipients, Minneapolis Medical Research Foundation, Minneapolis, MN, USA
| | - Dorry L Segev
- Abdominal Transplantation, Johns Hopkins University, Baltimore, MD, USA
| | - Krista L Lentine
- Saint Louis University Center for Abdominal Transplantation, St. Louis, MO, USA
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Abstract
Obesity and overweight are recognized as epidemics of non-communicable diseases in the 21st century. The kidneys are a target organ for obesity, damage to which is considered to be an independent risk factor for the development of renal failure. Obesity-related glomerulopathy (OGP) is one of the types of renal injury in obesity, which is characterized by the development of proteinuria in patients with a body mass index (BMI) of >30 kg/m2 in the absence of other causes of kidney damage. The pathogenesis of OGP is multifactorial. It is associated with intrarenal hemodynamic disorders - the development of renal hyperfiltration, the damaging action of adipose tissue hormones (hyperleptinemia, activation of the renin-angiotensin-aldosterone system, decreased production of adiponectin); with ectopic lipid accumulation in the kidney. The morphological pattern of OGP is characterized by a low glomerular density (oligonephronia) that leads to glomerular and tubular hypertrophy; by the development of perihilar focal segmental glomerulosclerosis (FSGS), obvious podocyte damages, and the development of a fatty kidney. The clinical picture of OGP is characterized by the slow and gradual development of albuminuria, not exceeding Stage A3 (300-1999 mg/day). Approximately one-third of patients develop partial nephrotic syndrome with massive proteinuria, but without edema and hypoproteinemia. Complete nephrotic syndrome is observed in not more than 6% of patients with OGP. In the course of the disease, 50% of patients develop hypertension and more than 80% do dyslipidemia. Stages IV-V chronic kidney disease may develop 20-30 years after the disease occurs.
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Affiliation(s)
- I M Kutyrina
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia, Moscow, Russia
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42
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Whaley-Connell A, Sowers JR. Insulin Resistance in Kidney Disease: Is There a Distinct Role Separate from That of Diabetes or Obesity? Cardiorenal Med 2017; 8:41-49. [PMID: 29344025 DOI: 10.1159/000479801] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Insulin resistance is a central component of the metabolic dysregulation observed in obesity, which puts one at risk for the development of type 2 diabetes and complications related to diabetes such as chronic kidney disease. Insulin resistance and compensatory hyperinsulinemia place one at risk for other risk factors such as dyslipidemia, hypertension, and proteinuria, e.g., development of kidney disease. Our traditional view of insulin actions focuses on insulin-sensitive tissues such as skeletal muscle, liver, adipose tissue, and the pancreas. However, insulin also has distinct actions in kidney tissue that regulate growth, hypertrophy, as well as microcirculatory and fibrotic pathways which, in turn, impact glomerular filtration, including that governed by tubuloglomerular feedback. However, it is often difficult to discern the distinct effects of excess circulating insulin and impaired insulin actions, as exist in the insulin resistance individual, from the associated effects of obesity or elevated systolic blood pressure on the development and progression of kidney disease over time. Therefore, we review the experimental and clinical evidence for the distinct impact of insulin resistance on kidney function and disease.
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Affiliation(s)
- Adam Whaley-Connell
- Research Service, Harry S. Truman Memorial Veterans' Hospital, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA.,Diabetes and Cardiovascular Center, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA.,Division of Nephrology and Hypertension, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA.,Division of Endocrinology and Metabolism, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA.,Department of Medicine, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA
| | - James R Sowers
- Research Service, Harry S. Truman Memorial Veterans' Hospital, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA.,Diabetes and Cardiovascular Center, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA.,Division of Endocrinology and Metabolism, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA.,Department of Medicine, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA.,Department of Medical Pharmacology and Physiology, University of Missouri-Columbia School of Medicine, Columbia, Missouri, USA
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43
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Zou Z, Zhuang Y, Liu L, Shen B, Xu J, Luo Z, Teng J, Wang C, Ding X. Role of Body Mass Index in Acute Kidney Injury Patients after Cardiac Surgery. Cardiorenal Med 2017; 8:9-17. [PMID: 29344022 DOI: 10.1159/000477824] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 05/17/2017] [Indexed: 01/30/2023] Open
Abstract
Background/Aims To explore the association of body mass index (BMI) with the risk of developing acute kidney injury after cardiac surgery (CS-AKI) and for AKI requiring renal replacement therapy (AKI-RRT) after cardiac surgery. Methods Clinical data of 8,455 patients undergoing cardiac surgery, including demographic preoperative, intraoperative, and postoperative data were collected. Patients were divided into underweight (BMI <18.5), normal weight (18.5≤ BMI <24), overweight (24≤ BMI <28), and obese (BMI ≥28) groups. The influence of BMI on CS-AKI incidence, duration of hospital, and intensive care unit (ICU) stays as well as AKI-related mortality was analyzed. Results The mean age of the patients was 53.2 ± 13.9 years. The overall CS-AKI incidence was 33.8% (n = 2,855) with a hospital mortality of 5.4% (n = 154). The incidence of AKI-RRT was 5.2% (n = 148) with a mortality of 54.1% (n = 80). For underweight, normal weight, overweight, and obese cardiac surgery patients, the AKI incidences were 29.9, 31.0, 36.5, and 46.0%, respectively (p < 0.001). The hospital mortality of AKI patients in the 4 groups was 9.5, 6.0, 3.8, and 4.3%, whereas the hospital mortality of AKI-RRT patients in the 4 groups was 69.2, 60.8, 36.4, and 58.8%, both significantly different (p < 0.05). Hospital and ICU stay durations were not significantly different in the 4 BMI groups. Conclusion The hospital prognosis of AKI and AKI-RRT patients after cardiac surgery was best when their BMI was in the 24-28 range.
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Affiliation(s)
- Zhouping Zou
- Department of Nephrology, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yamin Zhuang
- Department of Cardiology Surgery, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Lan Liu
- Department of Cardiology Surgery, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Bo Shen
- Department of Nephrology, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Shanghai Key Laboratory of Kidney and Blood Purification, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Shanghai Institute for Kidney and Dialysis, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiarui Xu
- Department of Nephrology, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Shanghai Key Laboratory of Kidney and Blood Purification, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Shanghai Institute for Kidney and Dialysis, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhe Luo
- Department of Cardiology Surgery, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jie Teng
- Department of Nephrology, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Shanghai Key Laboratory of Kidney and Blood Purification, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Shanghai Institute for Kidney and Dialysis, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Nephrology, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chunsheng Wang
- Department of Cardiology Surgery, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaoqiang Ding
- Department of Nephrology, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Shanghai Key Laboratory of Kidney and Blood Purification, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Shanghai Institute for Kidney and Dialysis, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China
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Marcusa DP, Schaubel DE, Woodside KJ, Sung RS. Impact of screening for metabolic syndrome on the evaluation of obese living kidney donors. Am J Surg 2017; 215:144-150. [PMID: 28882358 DOI: 10.1016/j.amjsurg.2017.08.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 08/02/2017] [Accepted: 08/28/2017] [Indexed: 11/13/2022]
Abstract
BACKGROUND We report our experience with metabolic syndrome screening for obese living kidney donor candidates to mitigate the long-term risk of CKD. METHODS We retrospectively reviewed 814 obese (BMI≥30) and 993 nonobese living kidney donor evaluations over 12 years. Using logistic regression, we explored interactions between social/clinical variables and candidate acceptance before and after policy implementation. RESULTS Obese donor candidate acceptance decreased after metabolic syndrome screening began (56.3%, 46.3%, p < 0.01), while nonobese candidate acceptance remained similar (59.6%, 59.2%, p = 0.59). Adjusting for age, gender, race, BMI, and number of prior evaluations, acceptance of obese candidates decreased significantly more than nonobese (p = 0.025). In candidates without metabolic syndrome, there was no significant change in how age, sex, race, or BMI affected a donor candidate's probability of acceptance. CONCLUSION Metabolic syndrome screening is a simple stratification tool for centers with liberal absolute BMI cut-offs to exclude potentially higher-risk obese candidates.
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Affiliation(s)
- Daniel P Marcusa
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | | | | | - Randall S Sung
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA.
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45
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Whaley-Connell A, Sowers JR. Obesity and kidney disease: from population to basic science and the search for new therapeutic targets. Kidney Int 2017; 92:313-323. [DOI: 10.1016/j.kint.2016.12.034] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 11/22/2016] [Accepted: 12/14/2016] [Indexed: 12/17/2022]
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46
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Risk-Factor Profile of Living Kidney Donors: The Australia and New Zealand Dialysis and Transplant Living Kidney Donor Registry 2004-2012. Transplantation 2017; 100:1278-83. [PMID: 27123877 DOI: 10.1097/tp.0000000000000877] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Recent literature suggests that living kidney donation may be associated with an excess risk of end-stage kidney disease and death. Efforts to maximize access to transplantation may result in acceptance of donors who do not fit within current guidelines, potentially placing them at risk of adverse long-term outcomes. METHODS We studied the risk profile of Australian and New Zealand living kidney donors using data from the Australia and New Zealand Dialysis and Transplant Living Kidney Donor Registry over 2004 to 2012. We compared their predonation profile against national guidelines for donor acceptance. RESULTS The analysis included 2,932 donors (mean age 48.8 ± 11.2 years, range 18-81), 58% female and 87% Caucasian. Forty (1%) had measured glomerular filtration rate less than 80 mL/min; 32 (1%) had proteinuria >300 mg/day; 589 (20%) were hypertensive; 495 (18%) obese; 9 (0.3%) were diabetic while a further 55 (2%) had impaired glucose tolerance; and 218 (7%) were current smokers. Overall 767 donors (26%) had at least one relative contraindication to donation and 268 (9%) had at least one absolute contraindication according to national guidelines. CONCLUSIONS Divergence of current clinical practice from national guidelines has occurred. In the context of recent evidence demonstrating elevated long-term donor risk, rigorous follow-up and reporting of outcomes are now mandated to ensure safety and document any change in risk associated with such a divergence.
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47
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Muturi A, Kotecha V, Kanyi S. A retrospective study to assess the evaluation of living related kidney donors and their outcomes following nephrectomy at Kenyatta National Hospital. BMC Nephrol 2017; 18:171. [PMID: 28545474 PMCID: PMC5445395 DOI: 10.1186/s12882-017-0585-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 05/15/2017] [Indexed: 01/10/2023] Open
Abstract
Background Kidney transplantation is the renal replacement therapy of choice for end stage renal disease. To ensure safety regular audit of the donation process is necessary. The aim of this study was to assess the evaluation of potential living related kidney donors and document their outcomes following nephrectomy. Methods This was a retrospective descriptive study involving all living related kidney donors seen at Kenyatta National Hospital (KNH) renal unit from 2010 to 2014. Upon approval by KNH/ERC, the records of all kidney donors were retrieved. Demographic characteristics, number of potential and actual donors, their clinical, laboratory and radiological data as well as documented complications and deaths were recorded. SPSS version 17(Chicago, Ilinois) was used for data entry and analysis. Chi square test and Mann Whitney U test were used as tests of association for categorical and continuous data respectively, with P value set at <0.05. Results Median age of the donors was 34 years (IQR 31–39). First-degree relatives were majority(84.5%). Renal function assessment was done using mean glomerular filtration rate (GFR) from the radionuclide scan (DTPA) and serum creatinine levels. The donors had a mean GFR of 99.2 ± SD 6.6. All the haematological and biochemical tests were within normal. Majority(42.9%) were HLA compatible, but data on HLA typing was missing for 22% of the patients records. On CT angiogram, single renal artery and single renal vein were found in 94 and 88% respectively. Immediate complications included excessive bleeding(2%) and breach of other cavities (4%). Paralytic ileus (32%) and atelectasis (27%) were the most common early postoperative complications. There was no mortality. Conclusion Our study reports no fatality but significant post-operative complications. These are significant findings that may be used to review and improve care and to educate potential kidney donors on the safety of this procedure in our centre, in a bid to widen the pool of potential living kidney donors.
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Affiliation(s)
- A Muturi
- University of Nairobi, Nairobi, Kenya.
| | - V Kotecha
- University of Nairobi, Nairobi, Kenya
| | - S Kanyi
- Department of Surgery Kenyatta National Hospital, Nairobi, Kenya
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The Impact of Obesity on Allograft Failure After Kidney Transplantation: A Competing Risks Analysis. Transplantation 2017; 100:1963-9. [PMID: 26569067 DOI: 10.1097/tp.0000000000000983] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The impact of pretransplant body mass index (BMI) on long-term allograft outcomes after kidney transplantation remains controversial. The conventional approach of using Kaplan-Meier method to calculate the cumulative risk of death-censored allograft failure may overestimate the risk of failure especially when competing failure risks are present. METHOD A retrospective cohort of adult first-time kidney transplant recipients was drawn from the Organ Procurement and Transplantation Network database (2001 to 2009). Based on World Health Organization obesity classification, BMI was categorized as: less than 18.5, 18.5 to <25, 25 to < 30, 30 to < 35, 35 to <40 and ≥40 kg/m. Both unadjusted and adjusted risk models were used to assess for risk of allograft failure in the presence of death as a competing event. RESULTS A total of 108 654 recipients were studied. In both unadjusted and adjusted models, increasing BMI level was associated with increased risk of long-term allograft failure. In the adjusted model with BMI 18.5 to less than 25 as the reference, the subhazards ratios (SHRs) for BMI were: less than 18.5: SHR, 0.96; P = 0.41; 25 to less than 30: SHR, 1.05; P = 0.01; 30 to less than 35: SHR, 1.15; P = <0.001; 35 to less than 40: SHR, 1.21; P < 0.001; and greater than 40: SHR, 1.13; P = 0.002. CONCLUSIONS Handling of death as a competing event demonstrates a graded, detrimental impact of increasing pretransplant BMI on the risk of graft failure after kidney transplantation in both unadjusted and adjusted models. Compared with previous studies, a lower BMI was not associated with an increased risk of graft loss in a competing risk model.
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Doucet B, Kostner K, Kaiser O, Hawley C, Isbel N. Live donor study - implications of kidney donation on cardiovascular risk with a focus on lipid parameters including lipoprotein a. Nephrology (Carlton) 2017; 21:901-4. [PMID: 27062186 DOI: 10.1111/nep.12792] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 03/14/2016] [Accepted: 04/01/2016] [Indexed: 12/29/2022]
Abstract
In this prospective observational cohort study, we evaluate the change in cardiovascular risk parameters, with a focus on lipids, in live kidney donors 1 year post donation. Body mass index, systolic/diastolic blood pressure, kidney function (chromium-51 ethylenediaminetetraacetic acid estimated glomerular filtration) and lipid parameters were measured at baseline and 1 year. Data on 87 live kidney donors were collected. Body mass index increased from 26.5 ± 2.7 pre to 27.4 ± 3.0 kg/m(2) post donation (p < 0.0001). Chromium-51 ethylenediaminetetraacetic acid estimated glomerular filtration decreased from 111.8 ± 20.0 pre to 72.1 ± 13.1 mL/min/1.73 m(2) post donation (p < 0.0001). Serum triglyceride levels increased from 0.8 (interquartile range 0.6-1.3) pre to 1.0 mmol/L (interquartile range 0.7-1.6) post donation (p = 0.0004). Statin use increased from 11.5% pre to 21% post donation (p < 0.005). Low-density lipoprotein remained stable, and other lipids (high-density lipoprotein, apolipoprotein B and lipoprotein a) did not change post donation.
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Affiliation(s)
- Brian Doucet
- Department of Cardiology, Mater Misericordiae Hospital, Brisbane, Queensland, Australia.,School of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Karam Kostner
- Department of Cardiology, Mater Misericordiae Hospital, Brisbane, Queensland, Australia.,School of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Omar Kaiser
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Carmel Hawley
- School of Medicine, University of Queensland, Brisbane, Queensland, Australia.,Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.,Translational Research Institute, Brisbane, Queensland, Australia.,Australasian Kidney Trials Network, University of Queensland, Brisbane, Queensland, Australia
| | - Nicole Isbel
- School of Medicine, University of Queensland, Brisbane, Queensland, Australia. .,Department of Nephrology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.
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de Souza Rodrigues T, Amorim de Albuquerque AL, de Oliveira Cosme FA, de Oliveira JAMG, Magalhães I, Teles F, Pedrosa AF. Evaluation of renal function in a specific population of living kidney donors. J Ren Care 2017; 43:114-120. [PMID: 28233463 DOI: 10.1111/jorc.12198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND The increase in candidates for kidney transplant has led to growth in the number of living donor transplants. Therefore, studies that adequately evaluate the possible long-term consequences of elective transplant nephrectomy are needed. OBJECTIVE To evaluate the possible long-term adverse effects of transplant nephrectomy on the renal function of living kidney donors. DESIGN A cross-sectional study. PARTICIPANTS Thirty-three living kidney donors registered in the transplant programme of a centre in Alagoas, Brazil. MEASUREMENTS Demographic characteristics, anthropometric measures, clinical data and biomarkers (creatinine, eGFR, microalbuminuria, cholesterol and triglycerides) were measured. Creatinine clearance was calculated using the Cockcroft-Gault and Modification of Diet in Renal Disease formulae. RESULTS Of the 33 individuals, 63.63% were female, and the median age was 45 years. Additionally, 24.24% of these individuals had altered blood pressure, 39.39% had altered abdominal circumference (AC) and 36.36% were obese, with a body mass index ≥30. Furthermore, 33.33% of these individuals had elevated triglyceride levels. The average eGFR was 97.33 (33.03-175.9) ml/min/1.73 m2 (CG) and 84.14 (29.4-131) ml/min/1.73 m2 (MDRD). The microalbuminuria level was altered in 12.12% patients. CONCLUSION Kidney donation is unquestionably a safe procedure. However, a better understanding of the long-term consequences of living donor kidney transplantation is still needed. This knowledge may have important implications for the follow-up of these patients. Our study has demonstrated a non-negligible presence of an early marker of glomerular injury and a decrease in the GFR of some patients, thereby reinforcing the proposal for long-term follow-up of living kidney donors.
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Affiliation(s)
| | | | | | | | | | - Flávio Teles
- Alagoas State University of Health Science, Maceió, Alagoas, Brazil.,School of Medicine, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - André Falcão Pedrosa
- Alagoas State University of Health Science, Maceió, Alagoas, Brazil.,School of Medicine, Federal University of Alagoas, Maceió, Alagoas, Brazil
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