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Ferreira AC, Mendes M, Silva C, Cotovio P, Aires I, Navarro D, Caeiro F, Salvador R, Correia B, Cabral G, Nolasco F, Ferreira A. Bone densitometry versus bone histomorphometry in renal transplanted patients: a cross-sectional study. Transpl Int 2021; 34:1065-1073. [PMID: 33909300 DOI: 10.1111/tri.13888] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/23/2021] [Accepted: 04/14/2021] [Indexed: 11/28/2022]
Abstract
Bone loss leads to increase risk of fractures in renal transplantation. The aim of this study was to analyse the relationship between bone densitometry (DXA) findings, bone histomorphometry and bone-related molecules 1-year after renal transplantation. We performed a cross-sectional study of de novo renal transplanted patients that agreed to perform a bone biopsy and a DXA examination 1 year after transplantation. All patients underwent a laboratory evaluation, bone biopsy, DXA examination and cardiac CT 1 year after transplantation. 67 patients were included, 16 had a normal examination, and 18 patients were classified as having osteoporosis by DXA. Correlations between bone mineral density and T-scores of total femur and femoral neck were the ones that best correlated with bone volume assessed by a bone biopsy. The sensitivity of DXA for osteoporosis diagnosis was 47.0%, and the specificity was 81.2%. The positive predictive value was 50.0%, and the negative predictive value (NPV) was 80.0%. DXA parameters also correlated with klotho and sclerostin serum levels. In this population, a normal examination excluded the presence of osteoporosis, helping in identifying patients that would not benefit from therapy. Overall, densitometry in total femur and femoral neck correlated well with bone volume measured by bone biopsy.
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Affiliation(s)
- Ana Carina Ferreira
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal.,Nova Medical School, Lisbon, Portugal
| | - Marco Mendes
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal
| | - Cecília Silva
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal
| | - Patrícia Cotovio
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal
| | - Inês Aires
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal.,Nova Medical School, Lisbon, Portugal
| | - David Navarro
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal
| | - Fernando Caeiro
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal
| | - Rute Salvador
- Tissue Repair and Inflammation Lab, CEDOC, Lisbon, Portugal
| | - Bruna Correia
- Tissue Repair and Inflammation Lab, CEDOC, Lisbon, Portugal
| | | | - Fernando Nolasco
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal.,Nova Medical School, Lisbon, Portugal
| | - Aníbal Ferreira
- Nephrology Department, Hospital Curry Cabral, CHULC, Lisbon, Portugal.,Nova Medical School, Lisbon, Portugal
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3
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Holden RM, Mustafa RA, Alexander RT, Battistella M, Bevilacqua MU, Knoll G, Mac-Way F, Reslerova M, Wald R, Acott PD, Feltmate P, Grill A, Jindal KK, Karsanji M, Kiberd BA, Mahdavi S, McCarron K, Molnar AO, Pinsk M, Rodd C, Soroka SD, Vinson AJ, Zimmerman D, Clase CM. Canadian Society of Nephrology Commentary on the Kidney Disease Improving Global Outcomes 2017 Clinical Practice Guideline Update for the Diagnosis, Evaluation, Prevention, and Treatment of Chronic Kidney Disease-Mineral and Bone Disorder. Can J Kidney Health Dis 2020; 7:2054358120944271. [PMID: 32821415 PMCID: PMC7412914 DOI: 10.1177/2054358120944271] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 06/06/2020] [Indexed: 12/23/2022] Open
Abstract
Purpose of review: (1) To provide commentary on the 2017 update to the Kidney Disease Improving Global Outcomes (KDIGO) 2017 Clinical Practice Guideline Update for the Diagnosis, Evaluation, Prevention, and Treatment of Chronic Kidney Disease-Mineral and Bone Disorder (CKD-MBD); (2) to apply the evidence-based guideline update for implementation within the Canadian health care system; (3) to provide comment on the care of children with chronic kidney disease (CKD); and (4) to identify research priorities for Canadian patients. Sources of information: The KDIGO 2017 Clinical Practice Guideline Update for the Diagnosis, Evaluation, Prevention, and Treatment of CKD-MBD. Methods: The commentary committee co-chairs selected potential members based on their knowledge of the Canadian kidney community, aiming for wide representation from relevant disciplines, academic and community centers, and different geographical regions. Key findings: We agreed with many of the recommendations in the clinical practice guideline on the diagnosis, evaluation, prevention, and treatment of CKD-MBD. However, based on the uncommon occurrence of abnormalities in calcium and phosphate and the low likelihood of severe abnormalities in parathyroid hormone (PTH), we recommend against screening and monitoring levels of calcium, phosphate, PTH, and alkaline phosphatase in adults with CKD G3. We suggest and recommend monitoring these parameters in adults with CKD G4 and G5, respectively. In children, we agree that monitoring for CKD-MBD should begin in CKD G2, but we suggest measuring ionized calcium, rather than total calcium or calcium adjusted for albumin. With regard to vitamin D, we suggest against routine screening for vitamin D deficiency in adults with CKD G3-G5 and G1T-G5T and suggest following population health recommendations for adequate vitamin D intake. We recommend that the measurement and management of bone mineral density (BMD) be according to general population guidelines in CKD G3 and G3T, but we suggest against routine BMD testing in CKD G4-G5, CKD G4T-5T, and in children with CKD. Based on insufficient data, we also recommend against routine bone biopsy in clinical practice for adults with CKD or CKD-T, or in children with CKD, although we consider it an important research tool. Limitations: The committee relied on the evidence summaries produced by KDIGO. The CSN committee did not replicate or update the systematic reviews.
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Affiliation(s)
- Rachel M Holden
- Division of Nephrology, Department of Medicine, Queen's University, Kingston, ON, Canada
| | - Reem A Mustafa
- Division of Nephrology and Hypertension, Department of Internal Medicine, The University of Kansas Medical Center, Kansas City, USA.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - R Todd Alexander
- Department of Pediatrics and Physiology, University of Alberta, Edmonton, Canada
| | - Marisa Battistella
- University Health Network, Leslie Dan Faculty of Pharmacy, University of Toronto, ON, Canada
| | - Micheli U Bevilacqua
- Division of Nephrology, Department of Medicine, The University of British Columbia, Vancouver, Canada
| | - Greg Knoll
- Division of Nephrology, The Ottawa Hospital, ON, Canada
| | - Fabrice Mac-Way
- Division of Nephrology, CHU de Québec, Hôtel-Dieu de Québec Hospital, Université Laval, Québec City, QC, Canada
| | - Martina Reslerova
- Nephrology Section, St. Boniface General Hospital, University of Manitoba, Winnipeg, Canada
| | - Ron Wald
- Division of Nephrology, St. Michael's Hospital, University of Toronto, ON, Canada
| | - Philip D Acott
- Division of Nephrology, Department of Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - Patrick Feltmate
- Department of Geriatric Medicine, Dalhousie University, Halifax, NS, Canada
| | - Allan Grill
- Department of Family & Community Medicine, University of Toronto, ON, Canada
| | - Kailash K Jindal
- Division of Nephrology, Department of Medicine, University of Alberta, Edmonton, Canada
| | - Meena Karsanji
- Professional Practice, Vancouver Coastal Health, Richmond, BC, Canada
| | - Bryce A Kiberd
- Division of Nephrology, Department of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Sara Mahdavi
- Department of Nutritional Sciences, University of Toronto, ON, Canada.,Department of Nephrology, Scarborough Health Network, ON, Canada
| | - Kailee McCarron
- Nova Scotia Renal Program, Nova Scotia Health Authority, Halifax, Canada
| | - Amber O Molnar
- Division of Nephrology, McMaster University, Hamilton, ON, Canada
| | - Maury Pinsk
- Division of Nephrology, Department of Pediatrics & Child Health, University of Manitoba, Winnipeg, Canada
| | - Celia Rodd
- Division of Diabetes & Endocrinology, Department of Pediatrics & Child Health, University of Manitoba, Winnipeg, Canada
| | - Steven D Soroka
- Division of Nephrology, Department of Medicine, Dalhousie University, NSHA Renal Program and Pharmacy Services, Halifax, NS, Canada
| | - Amanda J Vinson
- Division of Nephrology, Dalhousie University, Halifax, NS, Canada
| | - Deborah Zimmerman
- Division of Nephrology, Department of Medicine, University of Ottawa, ON, Canada
| | - Catherine M Clase
- Division of Nephrology, Department of Medicine, Department of Health Research, Evidence and Impact, McMaster University, Hamilton, ON, Canada
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4
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Haffner D, Leifheit-Nestler M. Treatment of hyperphosphatemia: the dangers of aiming for normal PTH levels. Pediatr Nephrol 2020; 35:485-491. [PMID: 31823044 DOI: 10.1007/s00467-019-04399-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/30/2019] [Accepted: 10/14/2019] [Indexed: 12/14/2022]
Abstract
Secondary hyperparathyroidism is part of the complex of chronic kidney disease-associated mineral and bone disorders (CKD-MBD) and is linked with high bone turnover, ectopic calcification, and increased cardiovascular mortality. Therefore, measures for CKD-MBD aim at lowering PTH levels, but there is no general consensus on optimal PTH target values. This manuscript is part of a pros and cons debate for keeping PTH levels within the normal range in children with CKD, focusing on the cons. We conclude that a modest increase in PTH most likely represents an appropriate adaptive response to declining kidney function in patients with CKD stages 2-5D, due to phosphaturic effects and increasing bone resistance. There is no evidence for strictly keeping PTH levels within the normal range in CKD patients with respect to bone health and cardiovascular outcome. In addition, the potentially adverse effects of PTH-lowering measures, such as active vitamin D and calcimimetics, must be taken into account. We suggest that PTH values of 1-2 times the upper normal limit (ULN) may be acceptable in children with CKD stage 2-3, and that PTH levels of 1.7-5 times UNL may be optimal in patients with CKD stage 4-5D. However, standard care of CKD-MBD in children relies on a combination of different measures in which the observation of PTH levels is only a small part of, and trends in PTH levels rather than absolute target values should determine treatment decisions in patients with CKD as recommended by the 2017 KDIGO guidelines.
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Affiliation(s)
- Dieter Haffner
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
| | - Maren Leifheit-Nestler
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
- Pediatric Research Center, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
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