1
|
Herath M, Langdahl B, Ebeling PR, Milat F. Challenges in the diagnosis and management of glucocorticoid-induced osteoporosis in younger and older adults. Clin Endocrinol (Oxf) 2022; 96:460-474. [PMID: 34811782 DOI: 10.1111/cen.14637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/16/2021] [Accepted: 10/26/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Glucocorticoids constitute a considerable risk for developing osteoporosis in both younger and older adults. However, currently available bone imaging modalities and fracture-risk assessment tools do not adequately capture the dramatic changes in bone microarchitecture, heterogeneity of glucocorticoid exposure, the impact of chronic disease and other osteoporosis risk factors on the assessment of osteoporosis in these individuals. DESIGN A narrative review is presented, following a systematic search of the literature from 2000 to 2021. RESULTS Our current appreciation of glucocorticoid-induced osteoporosis (GIO) is focused on older populations, with limited evidence to guide the investigation, risk assessment and treatment in premenopausal women and men less than 50 years. The impact of the underlying chronic disease on secondary osteoporosis in these younger adults is also poorly understood. CONCLUSION Through this narrative review, we provide a comprehensive overview of and recommendations for optimising the management of this common cause of secondary osteoporosis younger and older adults.
Collapse
Affiliation(s)
- Madhuni Herath
- Department of Endocrinology, Monash Health, Melbourne, Victoria, Australia
- Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Clayton, Victoria, Australia
| | - Bente Langdahl
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Peter R Ebeling
- Department of Endocrinology, Monash Health, Melbourne, Victoria, Australia
- Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia
| | - Frances Milat
- Department of Endocrinology, Monash Health, Melbourne, Victoria, Australia
- Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Clayton, Victoria, Australia
| |
Collapse
|
2
|
Kuppachi S, Cheungpasitporn W, Li R, Caliskan Y, Schnitzler MA, McAdams-DeMarco M, Ahn JB, Bae S, Hess GP, Segev DL, Lentine KL, Axelrod DA. Kidney Transplantation, Immunosuppression, and Fracture Risk: Clinical and Economic Implications. Kidney Med 2022; 4:100474. [PMID: 35669410 PMCID: PMC9166366 DOI: 10.1016/j.xkme.2022.100474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Rationale & Objective Disorders of bone and mineral metabolism frequently develop with advanced kidney disease, may be exacerbated by immunosuppression after kidney transplantation, and increase the risk of fractures. Study Design Retrospective database study. Setting & Participants Kidney-only transplant recipients aged ≥18 years from 2005 to 2016 in the United States captured in US Renal Data System records, which integrate Organ Procurement and Transplantation Network/United Network for Organ Sharing records with Medicare billing claims. Exposures Various immunosuppression regimens in the first 3 months after kidney transplantation. Outcomes The development of fractures, as ascertained using diagnostic codes on Medicare billing claims. Analytical Approach We used multivariable Cox regression with inverse propensity weighting to compare the incidence of fractures >3 months-to-3 years after kidney transplantation associated with various immunosuppression regimens compared to a reference regimen of antithymocyte globulin (TMG) or alemtuzumab (ALEM) with tacrolimus + mycophenolic acid + prednisone using inverse probability treatment weighting. Results Overall, fractures were identified in 7.5% of kidney transplant recipients (women, 8.8%; men, 6.7%; age < 55 years, 5.9%; age ≥ 55 years, 9.3%). In time-varying regression, experiencing a fracture was associated with a substantially increased risk of subsequent death within 3 months (adjusted hazard ratio [aHR], 3.06; 95% confidence interval [CI], 2.45-3.81). Fractures were also associated with increased Medicare spending (first year: $5,122; second year: $10,890; third year: $11,083; [P < 0.001]). Induction with TMG or ALEM and the avoidance or early withdrawal of steroids significantly reduced the risk of fractures in younger (aHR, 0.63; 95% CI, 0.54-0.73) and older (aHR, 0.83; 95% CI, 0.74-0.94) patients. The avoidance or early withdrawal of steroids with any induction was associated with a reduced risk of fractures in women. Limitations This was a retrospective study which lacked data on immunosuppression levels. Conclusions Fractures after kidney transplantation are associated with significantly increased mortality risk and costs. The early avoidance or early withdrawal of steroids after induction with TMG or ALEM reduces the risk of fractures after kidney transplantation and should be considered for patients at high-risk of this complication, including older adults and women.
Collapse
Affiliation(s)
- Sarat Kuppachi
- Organ Transplant Center, University of Iowa, Iowa City, IA
| | | | - Ruixin Li
- Saint Louis University Transplant Center, Saint Louis University, St. Louis, MO
| | - Yasar Caliskan
- Saint Louis University Transplant Center, Saint Louis University, St. Louis, MO
| | - Mark A. Schnitzler
- Saint Louis University Transplant Center, Saint Louis University, St. Louis, MO
| | | | - JiYoon B. Ahn
- Department of Surgery, Johns Hopkins School of Medicine, Baltimore, MD
| | - Sunjae Bae
- Department of Surgery, Johns Hopkins School of Medicine, Baltimore, MD
| | - Gregory P. Hess
- Jefferson College of Population Health, Thomas Jefferson University, Philadelphia, PA
- Department of Clinical Epidemiology, Aarhus University, Aarhus, Denmark
| | - Dorry L. Segev
- Department of Surgery, Johns Hopkins School of Medicine, Baltimore, MD
| | - Krista L. Lentine
- Saint Louis University Transplant Center, Saint Louis University, St. Louis, MO
- Address for Correspondence: Krista L. Lentine, MD, PhD, Saint Louis University Transplant Center, 1201 S. Grand Blvd., St. Louis, MO 63104.
| | | |
Collapse
|
3
|
Kizilbash SJ, Jensen CJ, Kouri AM, Balani SS, Chavers B. Steroid avoidance/withdrawal and maintenance immunosuppression in pediatric kidney transplantation. Pediatr Transplant 2022; 26:e14189. [PMID: 34786800 DOI: 10.1111/petr.14189] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/30/2021] [Accepted: 10/06/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Corticosteroids have been an integral part of maintenance immunosuppression for pediatric kidney transplantation. However, prolonged steroid therapy is associated with significant toxicities resulting in several SW/avoidance strategies in recent years. METHOD/OBJECTIVE This comprehensive review aims to discuss steroid-related toxicities and the safety, efficacy, and benefit of steroid avoidance/withdrawal immunosuppression in pediatric kidney transplant recipients. RESULTS Initial studies of SW/avoidance conducted in the setting of CSA and AZA showed an increased incidence of AR but no increase in graft loss or mortality with SW/avoidance maintenance immunosuppression. Studies performed under modern immunosuppression (induction therapy, Tac, and MMF) show no significant increase in AR or graft loss with SW/avoidance immunosuppression. Furthermore, SW/avoidance immunosuppression is associated with significant improvement in growth, BMI, BP control, and lipid profile in pediatric kidney transplant recipients. Despite these data, SW/avoidance remains controversial, and only 40% of pediatric kidney transplant recipients in the United States are currently on SW/avoidance maintenance immunosuppression. CONCLUSION SW/avoidance maintenance immunosuppression is safe and associated with fewer side effects compared with steroid-inclusive maintenance immunosuppression in pediatric kidney transplant recipients.
Collapse
Affiliation(s)
- Sarah J Kizilbash
- Pediatric Nephrology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Chelsey J Jensen
- Solid Organ Transplant, University of Minnesota, Minneapolis, Minnesota, USA
| | - Anne M Kouri
- Pediatric Nephrology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Shanthi S Balani
- Pediatric Nephrology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Blanche Chavers
- Pediatric Nephrology, University of Minnesota, Minneapolis, Minnesota, USA
| |
Collapse
|
4
|
Chen TY, Yang J, Zuo L, Wang L, Wang LF. Relationship of abdominal aortic calcification with lumbar vertebral volumetric bone mineral density assessed by quantitative computed tomography in maintenance hemodialysis patients. Arch Osteoporos 2022; 17:24. [PMID: 35080671 PMCID: PMC8791896 DOI: 10.1007/s11657-022-01059-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 12/29/2021] [Indexed: 02/03/2023]
Abstract
INTRODUCTION This cross-sectional study aimed to investigate the relationship between abdominal aortic calcification (AAC), which is a marker of vascular calcification, and volumetric bone mineral density (vBMD) by quantitative computed tomography (QCT) in maintenance hemodialysis (MHD) patients. METHODS All participants underwent lumbar vertebral vBMD measurement by QCT. Eight cross-sections were extracted sequentially and analyzed by ImageJ software to obtain the ratio of the calcified area to the abdominal aortic area (the calcification ratio). The AAC score was determined by the sum of the calcification ratios. The relationship between AAC and vBMD was analyzed using multivariate logistic regression. RESULTS Ninety MHD patients (58.89% male) with a mean age of 63.43 (standard deviation [SD] = 13.20) years were included in the study. AAC was present (AAC score > 0) in 93.33% of the patients. The 75th percentile of the AAC score corresponding to 119 was used as the cutoff point between the mild and severe groups. After full adjustment in the logistic model, AAC was found to be inversely associated with vBMD (odds ratio [OR], 0.970; 95% confidence interval [CI], 0.944 to 0.996; P = 0.025), and patients with osteoporosis had a significantly higher risk of severe AAC than those with normal bone mass (OR, 14.498; 95% CI, 1.507 to 139.486; P = 0.021). The independent inverse association was still stable after adjusting for variables measured at different time periods and using different cutoff points of the AAC score. CONCLUSION There was an independent inverse association between AAC and vBMD, and osteoporosis was significantly associated with severe AAC in patients with MHD.
Collapse
Affiliation(s)
- Tian-Yi Chen
- Department of Renal Medicine, Beijing Jishuitan Hospital, No. 68, Hui-South Road, Hui- Longguan Town, Changping District, 100096, Beijing, China.
| | - Jie Yang
- Department of Renal Medicine, Beijing Jishuitan Hospital, No. 68, Hui-South Road, Hui- Longguan Town, Changping District, 100096, Beijing, China
| | - Li Zuo
- Department of Renal Medicine, Peking University People's Hospital, Beijing, China
| | - Ling Wang
- Department of Radiology, Beijing Jishuitan Hospital, Beijing, China
| | - Li-Fang Wang
- Clinical Epidemiology Research Center, Beijing Jishuitan Hospital, Beijing, China
| |
Collapse
|
5
|
Al Jurdi A, Da Silva Martins J, Riella LV. Mineral Bone Disorders in Kidney Transplantation. Semin Nephrol 2021; 41:168-179. [PMID: 34140095 DOI: 10.1016/j.semnephrol.2021.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Bone disease after kidney transplantation is associated with an increased risk of fractures, morbidity, and mortality. Its pathophysiology is complex, involving multiple contributors including pretransplant bone disease, immunosuppressive medications, and changes in the parathyroid-bone-kidney axis. Risk scores, bone turnover markers, and noninvasive imaging modalities are only able to partially predict the fracture risk in kidney transplant recipients. The optimal management of bone disease after kidney transplantation has not yet been established, with only a limited number of randomized clinical trials evaluating the efficacy of treatment regimens in kidney transplant recipients. This review focuses on the pathophysiology, evaluation, prevention, and treatment of post-kidney transplant mineral and bone disease as guided by recent evidence.
Collapse
Affiliation(s)
- Ayman Al Jurdi
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | | | - Leonardo V Riella
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
| |
Collapse
|
6
|
Factors Related to Bone Metabolism in Kidney Transplant Recipients. Mediators Inflamm 2021; 2021:6679095. [PMID: 33510582 PMCID: PMC7826208 DOI: 10.1155/2021/6679095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/08/2021] [Indexed: 02/06/2023] Open
Abstract
This study is aimed at establishing the prevalence of osteoporosis and osteopenia in kidney transplant recipients (KTRs) and determining the risk factors for bone mass loss. We invited KTRs who were under regular follow-up at Jiangxi Provincial People's Hospital Affiliated with Nanchang University to attend an assessment of osteoporotic risk assessed by questionnaire, biochemical profile, and dual-energy X-ray absorptiometry (DXA) scanning of the lumbar spine, total hip, and femoral neck. Binary logistic regression models were used to investigate the relationship between the different variables and bone mass density (BMD). A total of 216 patients satisfied the inclusion criteria. The group consisted of 156 men (72.22%) and 60 women (27.78%), and the mean age was 41.50 ± 9.98 years. There were 81 patients with normal bone mass (37.50%) and 135 patients with bone mass loss (62.50%). Logistic regression analysis showed that a higher phosphorus value and higher alkaline phosphatase concentration and a longer use of glucocorticoids were risk factors for bone mass loss in KTRs, and maintaining an appropriate weight and exercising an appropriate number of times per week helped to maintain bone mass.
Collapse
|
7
|
Abstract
PURPOSE OF REVIEW Despite metabolic improvements following kidney transplantation, transplant recipients still often suffer from complex mineral and bone disease after transplantation. RECENT FINDINGS The pathophysiology of post-transplant disease is unique, secondary to underlying pre-transplant mineral and bone disease, immunosuppression, and changing kidney function. Changes in modern immunosuppression regimens continue to alter the clinical picture. Modern management includes reducing cumulative steroid exposure and correcting the biochemical abnormalities in mineral metabolism. While bone mineral density screening appears to help predict fracture risk and anti-osteoporotic therapy appears to have a positive effect on bone mineral density, more data regarding specific treatment is necessary. Patients with mineral and bone disease after kidney transplantation require special care in order to properly manage and mitigate their mineral and bone disease. Recent changes in clinical management of transplant patients may also be changing the implications on patients' mineral and bone disease.
Collapse
Affiliation(s)
- Ariella M Altman
- Department of Surgery, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Stuart M Sprague
- Division of Nephrology and Hypertension, NorthShore University HealthSystem, University of Chicago Medical School, 2650 Ridge Avenue, Evanston, IL, 60201, USA.
| |
Collapse
|
8
|
Frara S, Chiloiro S, Porcelli T, Giampietro A, Mazziotti G, De Marinis L, Giustina A. Bone safety of dual-release hydrocortisone in patients with hypopituitarism. Endocrine 2018; 60:528-531. [PMID: 29313195 DOI: 10.1007/s12020-017-1512-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 12/23/2017] [Indexed: 01/24/2023]
Affiliation(s)
- Stefano Frara
- Chair of Endocrinology, Università Vita-Salute San Raffaele, Milan, Italy
| | - Sabrina Chiloiro
- Pituitary Unit, Catholic University of the Sacred Heart, Rome, Italy
| | - Teresa Porcelli
- Montichiari Hospital, ASST Spedali Civili of Brescia, Brescia, Italy
| | | | | | - Laura De Marinis
- Pituitary Unit, Catholic University of the Sacred Heart, Rome, Italy
| | - Andrea Giustina
- Chair of Endocrinology, Università Vita-Salute San Raffaele, Milan, Italy.
| |
Collapse
|
9
|
Damasiewicz MJ, Ebeling PR. Management of mineral and bone disorders in renal transplant recipients. Nephrology (Carlton) 2018; 22 Suppl 2:65-69. [PMID: 28429555 DOI: 10.1111/nep.13028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The management of post-transplantation bone disease is a complex problem that remains under-appreciated in clinical practice. In these patients, pre-existing metabolic bone disorder is further impacted by the use of immunosuppressive medications (glucocorticoids and calcineurin-inhibitors), variable post-transplantation renal allograft function and post-transplantation diabetes mellitus. The treatment of post-transplantation bone loss should begin pre-transplantation. All patients active on transplant waiting lists should be screened for bone disease. Patients should also be encouraged to take preventative measures against osteoporosis such as regular weight-bearing exercise, smoking cessation and reducing alcohol consumption. Biochemical abnormalities of disordered mineral metabolism should be corrected prior to transplantation wherever possible, and because these abnormalities commonly persist, post transplant hypophosphatemia, persistent hyperparathyroidism and low vitamin D levels should be regularly monitored and treated. Bone loss is greatest in the first 6-12 months post-transplantation, during which period any intervention is likely to be of greatest benefit. There is strong evidence that bisphosphonates prevent post-transplantation bone loss; however, data are lacking that this clearly extends to a reduction in fracture incidence. Denosumab is a potential alternative to vitamin D receptor agonists and bisphosphonates in reducing post-transplantation bone loss; however, further studies are needed to demonstrate its safety in patients with a significantly reduced estimated glomerular filtration rate. Clinical judgement remains the cornerstone of this complex clinical problem, providing a strong rationale for the formation of combined endocrinology and nephrology clinics to treat patients with Chronic Kidney Disease-Mineral and Bone Disorder, before and after transplantation.
Collapse
Affiliation(s)
- Matthew J Damasiewicz
- Department of Nephrology, Monash Health, Melbourne, Australia.,Department of Medicine, Monash University, Melbourne, Australia
| | - Peter R Ebeling
- Department of Endocrinology, Monash Health, Melbourne, Australia.,Department of Medicine, Monash University, Melbourne, Australia.,School of Clinical Sciences at Monash Health, Monash University, Melbourne, Australia
| |
Collapse
|
10
|
Haller MC, Royuela A, Nagler EV, Pascual J, Webster AC. Steroid avoidance or withdrawal for kidney transplant recipients. Cochrane Database Syst Rev 2016; 2016:CD005632. [PMID: 27546100 PMCID: PMC8520739 DOI: 10.1002/14651858.cd005632.pub3] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Steroid-sparing strategies have been attempted in recent decades to avoid morbidity from long-term steroid intake among kidney transplant recipients. Previous systematic reviews of steroid withdrawal after kidney transplantation have shown a significant increase in acute rejection. There are various protocols to withdraw steroids after kidney transplantation and their possible benefits or harms are subject to systematic review. This is an update of a review first published in 2009. OBJECTIVES To evaluate the benefits and harms of steroid withdrawal or avoidance for kidney transplant recipients. SEARCH METHODS We searched the Cochrane Kidney and Transplant Specialised Register to 15 February 2016 through contact with the Information Specialist using search terms relevant to this review. SELECTION CRITERIA All randomised and quasi-randomised controlled trials (RCTs) in which steroids were avoided or withdrawn at any time point after kidney transplantation were included. DATA COLLECTION AND ANALYSIS Assessment of risk of bias and data extraction was performed by two authors independently and disagreement resolved by discussion. Statistical analyses were performed using the random-effects model and dichotomous outcomes were reported as relative risk (RR) and continuous outcomes as mean difference (MD) with 95% confidence intervals. MAIN RESULTS We included 48 studies (224 reports) that involved 7803 randomised participants. Of these, three studies were conducted in children (346 participants). The 2009 review included 30 studies (94 reports, 5949 participants). Risk of bias was assessed as low for sequence generation in 19 studies and allocation concealment in 14 studies. Incomplete outcome data were adequately addressed in 22 studies and 37 were free of selective reporting.The 48 included studies evaluated three different comparisons: steroid avoidance or withdrawal compared with steroid maintenance, and steroid avoidance compared with steroid withdrawal. For the adult studies there was no significant difference in patient mortality either in studies comparing steroid withdrawal versus steroid maintenance (10 studies, 1913 participants, death at one year post transplantation: RR 0.68, 95% CI 0.36 to 1.30) or in studies comparing steroid avoidance versus steroid maintenance (10 studies, 1462 participants, death at one year after transplantation: RR 0.96, 95% CI 0.52 to 1.80). Similarly no significant difference in graft loss was found comparing steroid withdrawal versus steroid maintenance (8 studies, 1817 participants, graft loss excluding death with functioning graft at one year after transplantation: RR 1.17, 95% CI 0.72 to 1.92) and comparing steroid avoidance versus steroid maintenance (7 studies, 1211 participants, graft loss excluding death with functioning graft at one year after transplantation: RR 1.09, 95% CI 0.64 to 1.86). The risk of acute rejection significantly increased in patients treated with steroids for less than 14 days after transplantation (7 studies, 835 participants: RR 1.58, 95% CI 1.08 to 2.30) and in patients who were withdrawn from steroids at a later time point after transplantation (10 studies, 1913 participants, RR 1.77, 95% CI 1.20 to 2.61). There was no evidence to suggest a difference in harmful events, such as infection and malignancy, in adult kidney transplant recipients. The effect of steroid withdrawal in children is unclear. AUTHORS' CONCLUSIONS This updated review increases the evidence that steroid avoidance and withdrawal after kidney transplantation significantly increase the risk of acute rejection. There was no evidence to suggest a difference in patient mortality or graft loss up to five year after transplantation, but long-term consequences of steroid avoidance and withdrawal remain unclear until today, because prospective long-term studies have not been conducted.
Collapse
Affiliation(s)
- Maria C Haller
- Medical University ViennaSection for Clinical Biometrics, Center for Medical Statistics, Informatics and Intelligent SystemsSpitalgasse 23ViennaAustriaA‐1090
- Krankenhaus Elisabethinen LinzDepartment for Internal Medicine III, Nephrology & Hypertension Diseases, Transplantation Medicine & RheumatologyFadingerstrasse 1LinzAustria4040
- Ghent University HospitalEuropean Renal Best Practice (ERBP), guidance issuing body of the European Renal Association – European Dialysis and Transplant Association (ERA‐EDTA), Methods Support TeamGhentBelgium
| | - Ana Royuela
- Hospital Ramon y CajalCIBER Epidemiologia y Salud Publica (CIBERESP)Ctra. Colmenar km, 9.1MadridSpain28047
- Instituto de Investigación Puerta de Hierro (IDIPHIM)Clinical Biostatistics UnitC/ Joaquín Rodrigo, 2Edif. Laboratorio. Planta 0.MajadahondaMadridSpain28222
| | - Evi V Nagler
- Ghent University HospitalEuropean Renal Best Practice (ERBP), guidance issuing body of the European Renal Association – European Dialysis and Transplant Association (ERA‐EDTA), Methods Support TeamGhentBelgium
- Ghent University HospitalRenal Division, Department of Internal MedicineDe Pintelaan 185GhentBelgium9000
| | - Julio Pascual
- Hospital del Mar‐IMIMDepartment of NephrologyPasseig Maritim 25‐29BarcelonaSpain08003
| | - Angela C Webster
- The University of SydneySydney School of Public HealthEdward Ford Building A27SydneyNSWAustralia2006
- The University of Sydney at WestmeadCentre for Transplant and Renal Research, Westmead Millennium InstituteWestmeadNSWAustralia2145
- The Children's Hospital at WestmeadCochrane Kidney and Transplant, Centre for Kidney ResearchWestmeadNSWAustralia2145
| | | |
Collapse
|
11
|
Shen G, Ren H, Qiu T, Liang D, Wei Q, Tang J, Zhang Z, Yao Z, Zhao W, Jiang X. Effect of glucocorticoid withdrawal on glucocorticoid inducing bone impairment. Biochem Biophys Res Commun 2016; 477:1059-1064. [PMID: 27402272 DOI: 10.1016/j.bbrc.2016.07.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 07/07/2016] [Indexed: 10/21/2022]
Abstract
Glucocorticoid (GC) withdrawal after a short-term use was common in clinical practice like immediate post-transplant period. However, previous studies without setting age-control group failed to determine whether the BMD recovery was sufficient and whether it is necessary to accept anti-osteoporosis therapy after GC withdrawal. The aim of this study was to investigate the effect of GC withdrawal on bone impairment in glucocorticoid-induced osteoporosis (GIOP) rats. Twenty-four female Sprague-Dawley rats (3 months' old) were randomly divided into two treatment groups: an untreated age-control group (Con, n = 12); another group receiving a dexamethasone injection (DEXA, n = 12). Animals in the Con group were euthanized at 3rd month (M3) and 6th month (M6), respectively. Six rats in the DEXA group were euthanized at 3rd month (M3), whereas GC intervention was withdrew in the remaining animals of DEXA group, which were euthanized at the end of 6th month (M6). Bone mass, bone microarchitecture, biomechanical properties of vertebrae, morphology, serum levels of PINP and β-CTX were evaluated. Compared with the Con(M3) group, the Con(M6) group showed significantly better bone quantity, morphology and quality. Compared with the Con(M3) group, the DEXA (M3) group showed significantly lower BMC, BMD, BS/TV, BV/TV, Tb.N, Tb.Th, vBMD, bone strength, compressive displacement, energy absorption capacity, PINP levels, β-CTX levels, and damaged trabecular morphology. And the same change trend was observed in the comparison between the Con(M6) group and DEXA (M6) group. Compared with the DEXA (M3) group, the DEXA (M6) group showed significantly higher BMC, BMD and AREA, but no significant difference in BS/TV, BV/TV, SMI, Tb.N, Tb.Th, Tb.Sp, vBMD, bone strength, bone stiffness, compressive displacement, energy absorption capacity, PINP levels, β-CTX levels, and improvement in trabecular morphology was observed. These results indicate that the reverse effect of GC withdrawal for 3 months on bone impairment in GIOP rats was insufficient, which implied that related anti-osteoporosis treatment might be still necessitated after GC withdrawal in clinical setting.
Collapse
Affiliation(s)
- Gengyang Shen
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
| | - Hui Ren
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
| | - Ting Qiu
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - De Liang
- Department of Spinal Surgery, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Qiushi Wei
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Jingjing Tang
- Department of Spinal Surgery, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Zhida Zhang
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Zhensong Yao
- Department of Spinal Surgery, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Wenhua Zhao
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Xiaobing Jiang
- Department of Spinal Surgery, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China; Laboratory Affiliated to National Key Discipline of Orthopaedic and Traumatology of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
| |
Collapse
|
12
|
Bouquegneau A, Salam S, Delanaye P, Eastell R, Khwaja A. Bone Disease after Kidney Transplantation. Clin J Am Soc Nephrol 2016; 11:1282-1296. [PMID: 26912549 PMCID: PMC4934848 DOI: 10.2215/cjn.11371015] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Bone and mineral disorders occur frequently in kidney transplant recipients and are associated with a high risk of fracture, morbidity, and mortality. There is a broad spectrum of often overlapping bone diseases seen after transplantation, including osteoporosis as well as persisting high- or low-turnover bone disease. The pathophysiology underlying bone disorders after transplantation results from a complex interplay of factors, including preexisting renal osteodystrophy and bone loss related to a variety of causes, such as immunosuppression and alterations in the parathyroid hormone-vitamin D-fibroblast growth factor 23 axis as well as changes in mineral metabolism. Management is complex, because noninvasive tools, such as imaging and bone biomarkers, do not have sufficient sensitivity and specificity to detect these abnormalities in bone structure and function, whereas bone biopsy is not a widely available diagnostic tool. In this review, we focus on recent data that highlight improvements in our understanding of the prevalence, pathophysiology, and diagnostic and therapeutic strategies of mineral and bone disorders in kidney transplant recipients.
Collapse
Affiliation(s)
- Antoine Bouquegneau
- Department of Nephrology, Dialysis, and Transplantation, Centre Hospitalier Universitaire de Liege, Liege, Belgium
| | - Syrazah Salam
- Sheffield Kidney Institute, Northern General Hospital, Sheffield, United Kingdom; and
| | - Pierre Delanaye
- Department of Nephrology, Dialysis, and Transplantation, Centre Hospitalier Universitaire de Liege, Liege, Belgium
| | - Richard Eastell
- Academic Unit of Bone Metabolism, Metabolic Bone Centre, Northern General Hospital, Sheffield, United Kingdom
| | - Arif Khwaja
- Sheffield Kidney Institute, Northern General Hospital, Sheffield, United Kingdom; and
| |
Collapse
|
13
|
Bamgbola O. Metabolic consequences of modern immunosuppressive agents in solid organ transplantation. Ther Adv Endocrinol Metab 2016; 7:110-27. [PMID: 27293540 PMCID: PMC4892400 DOI: 10.1177/2042018816641580] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Among other factors, sophistication of immunosuppressive (IS) regimen accounts for the remarkable success attained in the short- and medium-term solid organ transplant (SOT) survival. The use of steroids, mycophenolate mofetil and calcineurin inhibitors (CNI) have led to annual renal graft survival rates exceeding 90% in the last six decades. On the other hand, attrition rates of the allograft beyond the first year have remained unchanged. In addition, there is a persistent high cardiovascular (CV) mortality rate among transplant recipients with functioning grafts. These shortcomings are in part due to the metabolic effects of steroids, CNI and sirolimus (SRL), all of which are implicated in hypertension, new onset diabetes after transplant (NODAT), and dyslipidemia. In a bid to reduce the required amount of harmful maintenance agents, T-cell-depleting antibodies are increasingly used for induction therapy. The downsides to their use are greater incidence of opportunistic viral infections and malignancy. On the other hand, inadequate immunosuppression causes recurrent rejection episodes and therefore early-onset chronic allograft dysfunction. In addition to the adverse metabolic effects of the steroid rescue needed in these settings, the generated proinflammatory milieu may promote accelerated atherosclerotic disorders, thus setting up a vicious cycle. The recent availability of newer agent, belatacept holds a promise in reducing the incidence of metabolic disorders and hopefully its long-term CV consequences. Although therapeutic drug monitoring as applied to CNI may be helpful, pharmacodynamic tools are needed to promote a customized selection of IS agents that offer the most benefit to an individual without jeopardizing the allograft survival.
Collapse
Affiliation(s)
- Oluwatoyin Bamgbola
- State University of New York Downstate Medical Center, 450 Clarkson Avenue, Brooklyn, NY 11203-2098, USA
| |
Collapse
|
14
|
Taweesedt PT, Disthabanchong S. Mineral and bone disorder after kidney transplantation. World J Transplant 2015; 5:231-242. [PMID: 26722650 PMCID: PMC4689933 DOI: 10.5500/wjt.v5.i4.231] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 09/11/2015] [Accepted: 10/27/2015] [Indexed: 02/05/2023] Open
Abstract
After successful kidney transplantation, accumulated waste products and electrolytes are excreted and regulatory hormones return to normal levels. Despite the improvement in mineral metabolites and mineral regulating hormones after kidney transplantation, abnormal bone and mineral metabolism continues to present in most patients. During the first 3 mo, fibroblast growth factor-23 (FGF-23) and parathyroid hormone levels decrease rapidly in association with an increase in 1,25-dihydroxyvitamin D production. Renal phosphate excretion resumes and serum calcium, if elevated before, returns toward normal levels. FGF-23 excess during the first 3-12 mo results in exaggerated renal phosphate loss and hypophosphatemia occurs in some patients. After 1 year, FGF-23 and serum phosphate return to normal levels but persistent hyperparathyroidism remains in some patients. The progression of vascular calcification also attenuates. High dose corticosteroid and persistent hyperparathyroidism are the most important factors influencing abnormal bone and mineral metabolism in long-term kidney transplant (KT) recipients. Bone loss occurs at a highest rate during the first 6-12 mo after transplantation. Measurement of bone mineral density is recommended in patients with estimated glomerular filtration rate > 30 mL/min. The use of active vitamin D with or without bisphosphonate is effective in preventing early post-transplant bone loss. Steroid withdrawal regimen is also beneficial in preservation of bone mass in long-term. Calcimimetic is an alternative therapy to parathyroidectomy in KT recipients with persistent hyperparathyroidism. If parathyroidectomy is required, subtotal to near total parathyroidectomy is recommended. Performing parathyroidectomy during the waiting period prior to transplantation is also preferred in patients with severe hyperparathyroidism associated with hypercalcemia.
Collapse
|
15
|
Seref-Ferlengez Z, Basta-Pljakic J, Kennedy OD, Philemon CJ, Schaffler MB. Structural and mechanical repair of diffuse damage in cortical bone in vivo. J Bone Miner Res 2014; 29:2537-44. [PMID: 25042459 PMCID: PMC4273578 DOI: 10.1002/jbmr.2309] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 06/08/2014] [Accepted: 06/28/2014] [Indexed: 11/08/2022]
Abstract
Physiological wear and tear causes bone microdamage at several hierarchical levels, and these have different biological consequences. Bone remodeling is widely held to be the mechanism by which bone microdamage is repaired. However, recent studies showed that unlike typical linear microcracks, small crack damage, the clusters of submicron-sized matrix cracks also known as diffuse damage (Dif.Dx), does not activate remodeling. Thus, the fate of diffuse damage in vivo is not known. To examine this, we induced selectively Dif.Dx in rat ulnae in vivo by using end-load ulnar bending creep model. Changes in damage content were assessed by histomorphometry and mechanical testing immediately after loading (ie, acute loaded) or at 14 days after damage induction (ie, survival ulnae). Dif.Dx area was markedly reduced over the 14-day survival period after loading (p < 0.02). We did not observe any intracortical resorption, and there was no increase in cortical bone area in survival ulnae. The reduction in whole bone stiffness in acute loaded ulnae was restored to baseline levels in survival ulnae (p > 0.6). Microindentation studies showed that Dif.Dx caused a highly localized reduction in elastic modulus in diffuse damage regions of the ulnar cortex. Moduli in these previously damaged bone areas were restored to control values by 14 days after loading. Our current findings indicate that small crack damage in bone can be repaired without bone remodeling, and they suggest that alternative repair mechanisms exist in bone to deal with submicron-sized matrix cracks. Those mechanisms are currently unknown and further investigations are needed to elucidate the mechanisms by which this direct repair occurs.
Collapse
Affiliation(s)
- Zeynep Seref-Ferlengez
- Department of Biomedical Engineering, The City College of New York, City University of New York, New York, NY
| | | | | | | | | |
Collapse
|
16
|
The role of imaging in patient selection, preoperative planning, and postoperative monitoring in human upper extremity allotransplantation. J Transplant 2014; 2014:169546. [PMID: 24800056 PMCID: PMC3985332 DOI: 10.1155/2014/169546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 02/16/2014] [Accepted: 02/25/2014] [Indexed: 11/17/2022] Open
Abstract
Objective. To describe the role of imaging in vascular composite allotransplantation based on one institution's experience with upper extremity allotransplant patients. Methods. The institutional review board approved this review of HIPAA-compliant patient data without the need for individual consent. A retrospective review was performed of imaging from 2008 to 2011 on individuals undergoing upper extremity transplantation. This demonstrated that, of the 19 patients initially considered, 5 patients with a mean age of 37 underwent transplantation. Reports were correlated clinically to delineate which preoperative factors lead to patient selection versus disqualification and what concerns dictated postoperative imaging. Findings were subdivided into musculoskeletal and vascular imaging criterion. Results. Within the screening phase, musculoskeletal exclusion criterion included severe shoulder arthropathy, poor native bone integrity, and marked muscular atrophy. Vascular exclusion criterion included loss of sufficient arterial or venous supply and significant distortion of the native vascular architecture. Postoperative imaging was used to document healing and hardware integrity. Postsurgical angiography and ultrasound were used to monitor for endothelial proliferation or thrombosis as signs of rejection and vascular complication. Conclusion. Multimodality imaging is an integral component of vascular composite allotransplantation surgical planning and surveillance to maximize returning form and functionality while minimizing possible complications.
Collapse
|
17
|
Nishioka S, Sofue T, Inui M, Nishijima Y, Moriwaki K, Hara T, Mashiba T, Kakehi Y, Kohno M. Mineral and Bone Disorder Is Temporary in Patients Treated With Early Rapid Corticosteroid Reduction After Kidney Transplantation: A Single-Center Experience. Transplant Proc 2014; 46:514-20. [DOI: 10.1016/j.transproceed.2013.11.153] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/25/2013] [Accepted: 11/27/2013] [Indexed: 12/12/2022]
|
18
|
Recovery versus persistence of disordered mineral metabolism in kidney transplant recipients. Semin Nephrol 2013; 33:191-203. [PMID: 23465505 DOI: 10.1016/j.semnephrol.2012.12.019] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In patients with end-stage renal disease, successful renal transplantation improves the quality of life and increases survival, as compared with long-term dialysis treatment. Although it long has been believed that successful kidney transplantation to a large extent solves the problem of chronic kidney disease-mineral and bone disorders (CKD-MBD), increasing evidence indicates that it only changes the phenotype of CKD-MBD. Posttransplant CKD-MBD reflects the effects of immunosuppression, previous CKD-MBD persisting after transplantation, and de novo CKD-MBD. A major and often-underestimated problem after successful renal transplantation is persistent hyperparathyroidism. Besides contributing to posttransplant hypercalcemia and hypophosphatemia, persistent hyperparathyroidism may be involved in the pathogenesis of allograft dysfunction (nephrocalcinosis), progression of vascular calcification, and bone disease (uncoupling of bone formation and bone resorption and bone mineral density loss) in renal transplant recipients. Similar to nontransplanted patients, CKD-MBD has a detrimental impact on (cardiovascular) mortality and morbidity. Additional studies urgently are needed to get more insights into the pathophysiology of posttransplant CKD-MBD. These new insights will allow for a more targeted and causal therapeutic approach.
Collapse
|
19
|
|
20
|
Alshayeb HM, Josephson MA, Sprague SM. CKD-mineral and bone disorder management in kidney transplant recipients. Am J Kidney Dis 2012; 61:310-25. [PMID: 23102732 DOI: 10.1053/j.ajkd.2012.07.022] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 07/09/2012] [Indexed: 12/11/2022]
Abstract
Kidney transplantation, the most effective treatment for the metabolic abnormalities of chronic kidney disease (CKD), only partially corrects CKD-mineral and bone disorders. Posttransplantation bone disease, one of the major complications of kidney transplantation, is characterized by accelerated loss of bone mineral density and increased risk of fractures and osteonecrosis. The pathogenesis of posttransplantation bone disease is multifactorial and includes the persistent manifestations of pretransplantation CKD-mineral and bone disorder, peritransplantation changes in the fibroblast growth factor 23-parathyroid hormone-vitamin D axis, metabolic perturbations such as persistent hypophosphatemia and hypercalcemia, and the effects of immunosuppressive therapies. Posttransplantation fractures occur more commonly at peripheral than central sites. Although there is significant loss of bone density after transplantation, the evidence linking posttransplantation bone loss and subsequent fracture risk is circumstantial. Presently, there are no prospective clinical trials that define the optimal therapy for posttransplantation bone disease. Combined pharmacologic therapy that targets multiple components of the disordered pathways has been used. Although bisphosphonate or calcitriol therapy can preserve bone mineral density after transplantation, there is no evidence that these agents decrease fracture risk. Moreover, bisphosphonates pose potential risks for adynamic bone disease.
Collapse
Affiliation(s)
- Hala M Alshayeb
- Department of Medicine, Section of Nephrology, University of Chicago, Chicago, IL, USA
| | | | | |
Collapse
|
21
|
Nikkel LE, Mohan S, Zhang A, McMahon DJ, Boutroy S, Dube G, Tanriover B, Cohen D, Ratner L, Hollenbeak CS, Leonard MB, Shane E, Nickolas TL. Reduced fracture risk with early corticosteroid withdrawal after kidney transplant. Am J Transplant 2012; 12:649-59. [PMID: 22151430 PMCID: PMC4139036 DOI: 10.1111/j.1600-6143.2011.03872.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Corticosteroid use after kidney transplantation results in severe bone loss and high fracture risk. Although corticosteroid withdrawal in the early posttransplant period has been associated with bone mass preservation, there are no published data regarding corticosteroid withdrawal and risk of fracture. We hypothesized lower fracture incidence in patients discharged from the hospital without than with corticosteroids after transplantation. From the United States Renal Data System (USRDS), 77, 430 patients were identified who received their first kidney transplant from 2000 to 2006. Fracture incidence leading to hospitalization was determined from 2000 to 2007; discharge immunosuppression was determined from United Networks for Organ Sharing forms. Time-to-event analyses were used to evaluate fracture risk. Median (interquartile range) follow-up was 1448 (808-2061) days. There were 2395 fractures during follow-up; fracture incidence rates were 0.008 and 0.0058 per patient-year for recipients discharged with and without corticosteroid, respectively. Corticosteroid withdrawal was associated with a 31% fracture risk reduction (HR 0.69; 95% CI 0.59-0.81). Fractures associated with hospitalization are significantly lower with regimens that withdraw corticosteroid. As this study likely underestimates overall fracture incidence, prospective studies are needed to determine differences in overall fracture risk in patients managed with and without corticosteroids after kidney transplantation.
Collapse
Affiliation(s)
- L. E. Nikkel
- Departments of Penn State School of Medicine at Hershey, Hershey, PA
| | - S. Mohan
- Department of Medicine, Columbia University Medical Center, New York, NY
| | - A. Zhang
- Department of Medicine, Columbia University Medical Center, New York, NY
| | - D. J. McMahon
- Department of Medicine, Columbia University Medical Center, New York, NY
| | - S. Boutroy
- Department of Medicine, Columbia University Medical Center, New York, NY
| | - G. Dube
- Department of Medicine, Columbia University Medical Center, New York, NY
| | - B. Tanriover
- Department of Medicine, Columbia University Medical Center, New York, NY
| | - D. Cohen
- Department of Medicine, Columbia University Medical Center, New York, NY
| | - L. Ratner
- Department of Surgery, Columbia University Medical Center, New York, NY
| | - C. S. Hollenbeak
- Departments of Penn State School of Medicine at Hershey, Hershey, PA
| | - M. B. Leonard
- Children’s Hospital of Philadelphia, Philadelphia, PA
| | - E. Shane
- Department of Medicine, Columbia University Medical Center, New York, NY
| | - T. L. Nickolas
- Department of Medicine, Columbia University Medical Center, New York, NY,Corresponding author: Thomas L. Nickolas,
| |
Collapse
|
22
|
Hsu BG, Ho GJ, Lee CJ, Yang YC, Chen YC, Shih MH, Lee MC. Inverse association of serum long-acting natriuretic peptide and bone mineral density in renal transplant recipients. Clin Transplant 2011; 26:E105-10. [DOI: 10.1111/j.1399-0012.2011.01575.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
23
|
Nikkel LE, Mohan S, Zhang A, McMahon DJ, Boutroy S, Dube G, Tanriover B, Cohen D, Ratner L, Hollenbeak CS, Leonard MB, Shane E, Nickolas TL. Reduced fracture risk with early corticosteroid withdrawal after kidney transplant. Am J Transplant 2011. [PMID: 22151430 DOI: 10.111/j.1600-6143.2011.03872.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Corticosteroid use after kidney transplantation results in severe bone loss and high fracture risk. Although corticosteroid withdrawal in the early posttransplant period has been associated with bone mass preservation, there are no published data regarding corticosteroid withdrawal and risk of fracture. We hypothesized lower fracture incidence in patients discharged from the hospital without than with corticosteroids after transplantation. From the United States Renal Data System (USRDS), 77, 430 patients were identified who received their first kidney transplant from 2000 to 2006. Fracture incidence leading to hospitalization was determined from 2000 to 2007; discharge immunosuppression was determined from United Networks for Organ Sharing forms. Time-to-event analyses were used to evaluate fracture risk. Median (interquartile range) follow-up was 1448 (808-2061) days. There were 2395 fractures during follow-up; fracture incidence rates were 0.008 and 0.0058 per patient-year for recipients discharged with and without corticosteroid, respectively. Corticosteroid withdrawal was associated with a 31% fracture risk reduction (HR 0.69; 95% CI 0.59-0.81). Fractures associated with hospitalization are significantly lower with regimens that withdraw corticosteroid. As this study likely underestimates overall fracture incidence, prospective studies are needed to determine differences in overall fracture risk in patients managed with and without corticosteroids after kidney transplantation.
Collapse
Affiliation(s)
- L E Nikkel
- Penn State School of Medicine at Hershey, PA, USA
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|