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Sun CLF, Jaffe E, Levi R. Increased emergency cardiovascular events among under-40 population in Israel during vaccine rollout and third COVID-19 wave. Sci Rep 2022; 12:6978. [PMID: 35484304 PMCID: PMC9048615 DOI: 10.1038/s41598-022-10928-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 04/14/2022] [Indexed: 01/10/2023] Open
Abstract
Cardiovascular adverse conditions are caused by coronavirus disease 2019 (COVID-19) infections and reported as side-effects of the COVID-19 vaccines. Enriching current vaccine safety surveillance systems with additional data sources may improve the understanding of COVID-19 vaccine safety. Using a unique dataset from Israel National Emergency Medical Services (EMS) from 2019 to 2021, the study aims to evaluate the association between the volume of cardiac arrest and acute coronary syndrome EMS calls in the 16-39-year-old population with potential factors including COVID-19 infection and vaccination rates. An increase of over 25% was detected in both call types during January-May 2021, compared with the years 2019-2020. Using Negative Binomial regression models, the weekly emergency call counts were significantly associated with the rates of 1st and 2nd vaccine doses administered to this age group but were not with COVID-19 infection rates. While not establishing causal relationships, the findings raise concerns regarding vaccine-induced undetected severe cardiovascular side-effects and underscore the already established causal relationship between vaccines and myocarditis, a frequent cause of unexpected cardiac arrest in young individuals. Surveillance of potential vaccine side-effects and COVID-19 outcomes should incorporate EMS and other health data to identify public health trends (e.g., increased in EMS calls), and promptly investigate potential underlying causes.
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Affiliation(s)
- Christopher L F Sun
- Sloan School of Management, Massachusetts Institute of Technology, 100 Main Street, Cambridge, MA, 02142-1347, USA
- Healthcare Systems Engineering, Massachusetts General Hospital, Boston, MA, USA
| | - Eli Jaffe
- Israel National Emergency Medical Services (Magen David Adom), Tel Aviv-Jaffo, Israel
- Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Retsef Levi
- Sloan School of Management, Massachusetts Institute of Technology, 100 Main Street, Cambridge, MA, 02142-1347, USA.
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Chandran R, Nagendra L, Acharya S, Hosmane GB, Shetty V, Kellarai A, KR B. Vitamin D Supplementation in Sarcoidosis: A Double-Edged Sword. JOURNAL OF HEALTH AND ALLIED SCIENCES NU 2021. [DOI: 10.1055/s-0041-1736280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractSarcoidosis is complicated by disordered vitamin D and calcium metabolism, which has important implications on disease activity and bone health. Although the majority of the patients with sarcoidosis are typically deficient in 25-hydroxyvitamin D, repletion of vitamin D is controversial in light of the hypercalcemia risk. Presently, there are no clear guidelines regarding vitamin D supplementation as a part of osteoporosis prevention in patients with vitamin D deficiency and sarcoidosis. We report a patient with sarcoidosis who presented with severe hypercalcemia following vitamin D supplementation and review the debated role of vitamin D supplementation in vitamin D-deficient sarcoid patients.
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Affiliation(s)
- Rishikesh Chandran
- Department of General Medicine, K.S. Hegde Medical Academy, Mangalore, Karnataka, India
| | - Lakshmi Nagendra
- Department of Endocrinology, K.S. Hegde Medical Academy, Mangalore, Karnataka, India
| | - Shrikrishna Acharya
- Department of Endocrinology, K.S. Hegde Medical Academy, Mangalore, Karnataka, India
| | | | - Vijith Shetty
- Department of Oncology, K.S. Hegde Medical Academy, Mangalore, Karnataka, India
| | - Adithi Kellarai
- Department of General Medicine, K.S. Hegde Medical Academy, Mangalore, Karnataka, India
| | - Bhagavan KR
- Department of General Surgery, K.S Hegde Medical Academy, Mangalore, Karnataka, India
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Werner J, Rivera N, Grunewald J, Eklund A, Iseda T, Darlington P, Kullberg S. HLA-DRB1 alleles associate with hypercalcemia in sarcoidosis. Respir Med 2021; 187:106537. [PMID: 34325227 DOI: 10.1016/j.rmed.2021.106537] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 06/19/2021] [Accepted: 07/03/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND The mechanisms behind and which patients are at risk of developing sarcoidosis associated hypercalcemia (SAHC) have not been addressed. Different human leukocyte antigen (HLA) alleles associate with disease phenotypes in sarcoidosis. Insights into associations between HLA alleles, clinical phenotype and calcium levels may provide clues to mechanisms behind SAHC and help monitoring patients at risk for SAHC. AIMS AND OBJECTIVES To identify any HLA-association with SAHC, and to phenotypically characterize this patient group. METHODS 66 patients with SAHC (s-Ca2+>1.33 mmol/L) and 150 normocalcemic patients as controls were identified in a cohort of sarcoidosis patients. Data on HLA-DRB1 alleles, sex, angiotensin-converting enzyme (ACE), creatinine, extrapulmonary manifestations (EPM), age at sarcoidosis diagnosis, and how long after diagnosis SAHC emerged, were retrieved. RESULTS HLA-DRB1*04 was more common in patients with SAHC and the proportion of patients with HLA-DRB1*04 increased the more pronounced hypercalcemia. In patients with s-Ca2+>1.4 mmol/L, 20 out of 30 carried the HLA-DRB1*04 allele (67%, p < 0.01). Patients with SAHC more often disclosed renal insufficiency, elevated ACE, EPM, and a non-resolving disease than controls. The mean duration between sarcoidosis diagnosis and detection of SAHC was 1.39 years. CONCLUSIONS SAHC is associated with a more severe disease phenotype, particularly patients carrying the HLA-DRB1*04 allele are at higher risk for SAHC. HLA-assessment in the clinic can be a way to identify these patients. The results provide a basis for future studies on the connection between HLA-DRB1*04 and SAHC mechanisms.
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Affiliation(s)
- Joanna Werner
- Department of Respiratory Medicine, Theme Inflammation and Infection, Karolinska University Hospital, 171 76, Stockholm, Sweden; Department of Medicine Solna, Respiratory Medicine Division, Karolinska Institutet, 171 77, Stockholm, Sweden.
| | - Natalia Rivera
- Department of Medicine Solna, Respiratory Medicine Division, Karolinska Institutet, 171 77, Stockholm, Sweden.
| | - Johan Grunewald
- Department of Respiratory Medicine, Theme Inflammation and Infection, Karolinska University Hospital, 171 76, Stockholm, Sweden; Department of Medicine Solna, Respiratory Medicine Division, Karolinska Institutet, 171 77, Stockholm, Sweden.
| | - Anders Eklund
- Department of Medicine Solna, Respiratory Medicine Division, Karolinska Institutet, 171 77, Stockholm, Sweden.
| | - Tomoko Iseda
- Department of Medicine Solna, Respiratory Medicine Division, Karolinska Institutet, 171 77, Stockholm, Sweden.
| | - Pernilla Darlington
- Department of Internal Medicine, Sjukhusbacken 10, Södersjukhuset, 118 83, Stockholm, Sweden; Department of Clinical Science and Education, Södersjukhuset and Karolinska Institutet, 171 77, Stockholm, Sweden.
| | - Susanna Kullberg
- Department of Respiratory Medicine, Theme Inflammation and Infection, Karolinska University Hospital, 171 76, Stockholm, Sweden; Department of Medicine Solna, Respiratory Medicine Division, Karolinska Institutet, 171 77, Stockholm, Sweden.
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Abstract
After the initial description of extrarenal synthesis of 1,25-dihydroxyvitamin D (1,25-(OH)2D) three decades ago, extensive progress has been made in unraveling the immunomodulatory roles of vitamin D in the pathogenesis of granulomatous disorders, including sarcoidosis. It has been shown that 1,25-(OH)2D has dual effects on the immune system, including upregulating innate immunity as well as downregulating the autoimmune response. The latter mechanism plays an important role in the pathogenesis and treatment of sarcoidosis. Vitamin D supplementation in patients with sarcoidosis has been hampered owing to concerns about the development of hypercalcemia and hypercalciuria given that extrarenal 1-α hydroxylase is substrate dependent. Recently, a few studies have cast doubt over the mechanisms underlying the development of hypercalcemia in this population. These studies demonstrated an inverse relationship between the level of vitamin D and severity of sarcoidosis. Consequently, clinical interest has been piqued in the use of vitamin D to attenuate the autoimmune response in this disorder. However, the development of hypercalcemia and the attendant detrimental effects are real possibilities. Although the average serum calcium concentration did not change following vitamin D supplementation, in two recent studies, hypercalciuria occurred in one out of 13 and two out of 16 patients. This review is a concise summary of the literature, outlining past work and newer developments in the use of vitamin D in sarcoidosis. We feel that larger-scale placebo-controlled randomized studies are needed in this population. Since the current first-line treatment of sarcoidosis is glucocorticoids, which confer many systemic adverse effects, and steroid-sparing immunosuppressant treatment options carry additional risks of adverse effects, adjunct management with vitamin D in combination with potent anti-osteoporotic medications could minimize the risk of glucocorticoid-induced osteoporosis and modulate the immune system to attenuate disease activity in sarcoidosis.
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Affiliation(s)
- Fabiola Gianella
- Pulmonary and Critical Care Medicine Division, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Connie CW Hsia
- Pulmonary and Critical Care Medicine Division, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Khashayar Sakhaee
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Zhou Y, Lower EE. Balancing Altered Calcium Metabolism with Bone Health in Sarcoidosis. Semin Respir Crit Care Med 2020; 41:618-625. [PMID: 32777848 DOI: 10.1055/s-0040-1713009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Abnormal calcium metabolism in sarcoidosis patients can lead to hypercalcemia, hypercalciuria, and kidney stones. Hypercalcemia in sarcoidosis is usually due to increased activity of 1α-hydroxylase in macrophages of pulmonary granulomata, resulting in low levels of 25-hydroxyvitamin D and high levels of calcitriol. Vitamin D supplementation may be dangerous for some sarcoidosis patients and is recommended only for those with decreased 25-hydroxyvitamin D and reduced or normal calcitriol level. Diagnosis, treatment of osteoporosis, and maintenance of bone health are complex issues for sarcoidosis patients. An approach to diagnosis and treatment of bone fragility is presented.
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Affiliation(s)
- Ying Zhou
- Department of Respiratory Medicine, Clinical Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Elyse E Lower
- Department of Internal Medicine, University of Cincinnati Medical Center, Cincinnati, Ohio
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Crouser ED, Maier LA, Wilson KC, Bonham CA, Morgenthau AS, Patterson KC, Abston E, Bernstein RC, Blankstein R, Chen ES, Culver DA, Drake W, Drent M, Gerke AK, Ghobrial M, Govender P, Hamzeh N, James WE, Judson MA, Kellermeyer L, Knight S, Koth LL, Poletti V, Raman SV, Tukey MH, Westney GE. Diagnosis and Detection of Sarcoidosis. An Official American Thoracic Society Clinical Practice Guideline. Am J Respir Crit Care Med 2020; 201:e26-e51. [PMID: 32293205 PMCID: PMC7159433 DOI: 10.1164/rccm.202002-0251st] [Citation(s) in RCA: 437] [Impact Index Per Article: 109.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background: The diagnosis of sarcoidosis is not standardized but is based on three major criteria: a compatible clinical presentation, finding nonnecrotizing granulomatous inflammation in one or more tissue samples, and the exclusion of alternative causes of granulomatous disease. There are no universally accepted measures to determine if each diagnostic criterion has been satisfied; therefore, the diagnosis of sarcoidosis is never fully secure. Methods: Systematic reviews and, when appropriate, meta-analyses were performed to summarize the best available evidence. The evidence was appraised using the Grading of Recommendations, Assessment, Development, and Evaluation approach and then discussed by a multidisciplinary panel. Recommendations for or against various diagnostic tests were formulated and graded after the expert panel weighed desirable and undesirable consequences, certainty of estimates, feasibility, and acceptability. Results: The clinical presentation, histopathology, and exclusion of alternative diagnoses were summarized. On the basis of the available evidence, the expert committee made 1 strong recommendation for baseline serum calcium testing, 13 conditional recommendations, and 1 best practice statement. All evidence was very low quality. Conclusions: The panel used systematic reviews of the evidence to inform clinical recommendations in favor of or against various diagnostic tests in patients with suspected or known sarcoidosis. The evidence and recommendations should be revisited as new evidence becomes available.
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Gwadera Ł, Białas AJ, Iwański MA, Górski P, Piotrowski WJ. Sarcoidosis and calcium homeostasis disturbances-Do we know where we stand? Chron Respir Dis 2020; 16:1479973119878713. [PMID: 31718265 PMCID: PMC6854763 DOI: 10.1177/1479973119878713] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The majority of cases involving hypercalcemia in the setting of sarcoidosis are explained by the overproduction of calcitriol by activated macrophages. Vitamin D takes part in the regulation of granuloma formation. However, using vitamin D metabolites to assess the activity of the disease is still problematic, and its usefulness is disputable. In some cases, though, a calcium metabolism disorder could be a valuable tool (i.e. as a marker of extrathoracic sarcoidosis). Although sarcoidosis does not cause a decrease in bone mineral density, increased incidence of vertebral deformities is noted. Despite increasing knowledge about calcium homeostasis disorders in patients with sarcoidosis, there is still a need for clear guidelines regarding calcium and vitamin D supplementation in these patients.
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Affiliation(s)
- Łukasz Gwadera
- Department of Pneumology and Allergy, Chair of Internal Medicine, Medical University of Lodz, Poland
| | - Adam Jerzy Białas
- Department of Pneumology and Allergy, Chair of Internal Medicine, Medical University of Lodz, Poland
| | | | - Paweł Górski
- Department of Pneumology and Allergy, Chair of Internal Medicine, Medical University of Lodz, Poland
| | - Wojciech Jerzy Piotrowski
- Department of Pneumology and Allergy, Chair of Internal Medicine, Medical University of Lodz, Poland
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Bolland MJ, Gamble GD, Avenell A, Grey A, Lumley T. Baseline P value distributions in randomized trials were uniform for continuous but not categorical variables. J Clin Epidemiol 2019; 112:67-76. [DOI: 10.1016/j.jclinepi.2019.05.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/02/2019] [Accepted: 05/15/2019] [Indexed: 10/26/2022]
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Bolland MJ, Gamble GD, Avenell A, Grey A. Rounding, but not randomization method, non-normality, or correlation, affected baseline P-value distributions in randomized trials. J Clin Epidemiol 2019; 110:50-62. [DOI: 10.1016/j.jclinepi.2019.03.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 02/03/2019] [Accepted: 03/01/2019] [Indexed: 10/27/2022]
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Malihi Z, Wu Z, Lawes CMM, Scragg R. Adverse events from large dose vitamin D supplementation taken for one year or longer. J Steroid Biochem Mol Biol 2019; 188:29-37. [PMID: 30529281 DOI: 10.1016/j.jsbmb.2018.12.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 11/23/2018] [Accepted: 12/06/2018] [Indexed: 02/07/2023]
Abstract
In recent years, clinical trials increasingly have given large doses of vitamin D supplements to investigate possible health benefits beyond bone at high 25-hydroxyvitamin D levels. However, there are few publications on the safety of high-dose vitamin D given long term. The study objective was to investigate the cumulative relative risk (RR) of total adverse events, kidney stones, hypercalcemia and hypercalciuria from ≥2800 IU/d vitamin D2 or D3 supplementation, followed for one year or more in randomized controlled trials (RCTs). A systematic review was conducted in Medline Ovid, EMBASE and Cochrane in March 2018 to update results of studies published since a previous review in October 2015. RCTs were included if they gave vitamin D2 or D3 at ≥2800 IU/d for at least one year and reported on total adverse events or at least one calcium-related adverse event. There were a total of 32 studies that met the inclusion criteria. Of these, only 15 studies (3150 participants) reported one or more event of the outcomes of interest. Long-term high-dose vitamin D supplementation did not increase total adverse events compared to placebo in 1731 participants from 10 studies (RR = 1.05; 95% CI = 0.88, 1.24; p = 0.61), nor kidney stones in 1336 participants from 5 studies (RR = 1.26; 95% CI = 0.35, 4.58; p = 0.72). However, there was a trend for vitamin D to increase risk of hypercalcemia in 2598 participants from 10 studies (RR = 1.93; 95% CI = 1.00, 3.73; p = 0.05); while its effect on hypercalciuria in only 276 participants from 3 studies was inconclusive (RR = 1.93; 95% CI = 0.83, 4.46; p = 0.12). In conclusion, one year or longer supplementation with a large daily, weekly or monthly dose of vitamin D2 /D3 did not significantly increase a risk of total adverse events or kidney stones, although there was a trend towards increased hypercalcemia, and possibly for hypercalciuria.
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Affiliation(s)
- Z Malihi
- School of Population Health, University of Auckland, New Zealand
| | - Zhenqiang Wu
- School of Population Health, University of Auckland, New Zealand
| | | | - Robert Scragg
- School of Population Health, University of Auckland, New Zealand.
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11
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Serum and urinary calcium level in Latvian patients with sarcoidosis. Reumatologia 2018; 56:377-381. [PMID: 30647484 PMCID: PMC6330682 DOI: 10.5114/reum.2018.80715] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 12/03/2018] [Indexed: 12/19/2022] Open
Abstract
Objectives Sarcoidosis is a multisystem granulomatous disease of unknown etiology that in 90% of cases affects the lungs. Calcium metabolism testing can be useful in diagnostics. The aim of the study was to assess the correlation between calcium metabolism and sarcoidosis form of manifestation/demographic indicators. Material and methods In a retrospective study medical records of all patients (n = 699) who had been hospitalized with suspected sarcoidosis in a specialized clinic of Riga Eastern Clinical University Hospital during the period from January 1st, 2013 until December 31st, 2014 were analyzed. Further analysis included only patients with histologically and/or clinically confirmed sarcoidosis (n = 281). Results Patients’ average age at the time of diagnosis was 39 ±13 years. Elevated serum calcium was observed in 9.9% of cases. A statistically significant correlation was found between serum calcium and age (p < 0.01). There was an association between serum calcium and gender (p < 0.05) – levels were higher in men (2.43 mmol/l) than in women (2.40 mmol/l). Elevated calcium in 24-hour urine was observed in 22.7% of patients. The mean value was 232.3 mg/24 h, levels were higher in men (258.7 mg/24 h) than in women (202.3 mg/24 h), and the association with gender was statistically significant (p < 0.01). Conclusions We can conclude that in Latvia sarcoidosis affects mostly young and middle-aged people. Both serum calcium and calcium in 24-hour urine are important parameters for sarcoidosis diagnostics. Hypercalcemia was found in 9.9% of patients, hypercalciuria in 22.7% of patients, and both were statistically significantly higher in men, regardless of age.
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Bolland MJ, Grey A, Avenell A. Effects of vitamin D supplementation on musculoskeletal health: a systematic review, meta-analysis, and trial sequential analysis. Lancet Diabetes Endocrinol 2018; 6:847-858. [PMID: 30293909 DOI: 10.1016/s2213-8587(18)30265-1] [Citation(s) in RCA: 248] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/23/2018] [Accepted: 08/24/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND The effects of vitamin D on fractures, falls, and bone mineral density are uncertain, particularly for high vitamin D doses. We aimed to determine the effect of vitamin D supplementation on fractures, falls, and bone density. METHODS In this systematic review, random-effects meta-analysis, and trial sequential analysis, we used findings from literature searches in previously published meta-analyses. We updated these findings by searching PubMed, Embase, and Cochrane Central on Sept 14, 2017, and Feb 26, 2018, using the search term "vitamin D" and additional keywords, without any language restrictions. We assessed randomised controlled trials of adults (>18 years) that compared vitamin D with untreated controls, placebo, or lower-dose vitamin D supplements. Trials with multiple interventions (eg, co-administered calcium and vitamin D) were eligible if the study groups differed only by use of vitamin D. We excluded trials of hydroxylated vitamin D analogues. Eligible studies included outcome data for total or hip fractures, falls, or bone mineral density measured at the lumbar spine, total hip, femoral neck, total body, or forearm. We extracted data about participant characteristics, study design, interventions, outcomes, funding sources, and conflicts of interest. The co-primary endpoints were participants with at least one fracture, at least one hip fracture, or at least one fall; we compared data for fractures and falls using relative risks with an intention-to-treat analysis using all available data. The secondary endpoints were the percentage change in bone mineral density from baseline at lumbar spine, total hip, femoral neck, total body, and forearm. FINDINGS We identified 81 randomised controlled trials (n=53 537 participants) that reported fracture (n=42), falls (n=37), or bone mineral density (n=41). In pooled analyses, vitamin D had no effect on total fracture (36 trials; n=44 790, relative risk 1·00, 95% CI 0·93-1·07), hip fracture (20 trials; n=36 655, 1·11, 0·97-1·26), or falls (37 trials; n=34 144, 0·97, 0·93-1·02). Results were similar in randomised controlled trials of high-dose versus low-dose vitamin D and in subgroup analyses of randomised controlled trials using doses greater than 800 IU per day. In pooled analyses, there were no clinically relevant between-group differences in bone mineral density at any site (range -0·16% to 0·76% over 1-5 years). For total fracture and falls, the effect estimate lay within the futility boundary for relative risks of 15%, 10%, 7·5%, and 5% (total fracture only), suggesting that vitamin D supplementation does not reduce fractures or falls by these amounts. For hip fracture, at a 15% relative risk, the effect estimate lay between the futility boundary and the inferior boundary, meaning there is reliable evidence that vitamin D supplementation does not reduce hip fractures by this amount, but uncertainty remains as to whether it might increase hip fractures. The effect estimate lay within the futility boundary at thresholds of 0·5% for total hip, forearm, and total body bone mineral density, and 1·0% for lumbar spine and femoral neck, providing reliable evidence that vitamin D does not alter these outcomes by these amounts. INTERPRETATION Our findings suggest that vitamin D supplementation does not prevent fractures or falls, or have clinically meaningful effects on bone mineral density. There were no differences between the effects of higher and lower doses of vitamin D. There is little justification to use vitamin D supplements to maintain or improve musculoskeletal health. This conclusion should be reflected in clinical guidelines. FUNDING Health Research Council of New Zealand.
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Affiliation(s)
- Mark J Bolland
- Department of Medicine, University of Auckland, Auckland, New Zealand.
| | - Andrew Grey
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Alison Avenell
- Health Services Research Unit, University of Aberdeen, Foresterhill, Aberdeen, Scotland, UK
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Papanikolaou IC, Tabila B, Tabila K, Borok Z, Sharma O, Gould MK. Vitamin D status in sarcoidosis: a cross-sectional study. SARCOIDOSIS VASCULITIS AND DIFFUSE LUNG DISEASES 2018; 35:154-159. [PMID: 32476896 DOI: 10.36141/svdld.v35i2.6199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 09/25/2017] [Indexed: 11/02/2022]
Abstract
Background: Hypercalcemia, a common feature in sarcoidosis, is due to the excessive production of active Vitamin D metabolite, 1,25(OH)2D. Levels of 25(OH) Vitamin D however may not be appropriate. Objectives: To assess Vitamin D status and its clinical associations in sarcoidosis patients compared to a general respiratory diseases out-patient clinic population, serving as controls. Methods: 64 sarcoidosis cases and 53 control cases with other than sarcoidosis respiratory diseases, matched for age and sex were included in the study. Serum 25(OH)D, 1,25(OH)2D, calcium, angiotensin converting enzyme (ACE) were measured. 25(OH) Vitamin D was described as deficient when <20 ng/ml and insufficient when <30 ng/ml. Clinical parameters were recorded for sarcoidosis cases. Results: Overall 41/64 sarcoidosis cases (64%) had low 25(OH) D, 7/64 (11%) had high 1,25(OH)2D and 2/64 had hypercalcaemia (3%). Sarcoidosis subjects likely exhibited deficient (39%) or normal 25(OH)D levels (36%) in comparison to controls (p=0.018). 25(OH) Vitamin D deficiency in sarcoidosis was associated with race and radiological stage I disease, with regression analysis identifying African-American race as the only significant risk factor (p=0.03). An inverse correlation between ACE and 25(OH)D levels was found (p=0.052). 1,25(OH)2D was significantly elevated in sarcoidosis compared to controls. Among sarcoidosis patients, those with insufficient 25(OH)D levels exhibited higher calcium levels in serum. Conclusions: 25(OH) Vitamin D deficiency is prevalent in sarcoidosis, particularly in African-Americans and likely those with active disease. However, concomitant 1,25(OH)2D elevation and associated hypercalcaemia make Vitamin D supplementation dangerous in sarcoidosis. (Sarcoidosis Vasc Diffuse Lung Dis 2018; 35: 154-159).
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Affiliation(s)
- Ilias C Papanikolaou
- Division of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine, University of Southern California, USA.,Department of Pulmonary Medicine, Corfu General Hospital, Greece
| | - Brian Tabila
- Division of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine, University of Southern California, USA
| | | | - Zea Borok
- Will Rogers Institute Pulmonary Research Center, Division of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine, University of Southern California, USA
| | - Om Sharma
- Division of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine, University of Southern California, USA
| | - Michael K Gould
- Health Services Research and Implementation Science, Kaiser Permanente Southern California
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Abstract
PURPOSE OF REVIEW Vitamin D supplementation is widespread used in the general population. In sarcoidosis, up to 50% of patients, especially postmenopausal women and those taking corticosteroids, show evidence of increased bone fragility. The purpose of this review is to provide an evidence-based rationale on how to treat sarcoidosis patients with bone health issues. RECENT FINDINGS Evidence from observational studies show that decreased 25-hydroxy vitamin D is common in sarcoidosis. However, the great majority of sarcoidosis patents have normal or often elevated levels of 1,25-dihydroxy vitamin D (calcitriol), a marker associated with disease activity. High calcitriol levels may often be associated with hypercalcemia and hypercalcuria. The few interventional randomized controlled studies in the field, suggest that vitamin D supplementation may not be well tolerated because of hypercalcemia, moreover without substantial benefit on bone health and risk for fractures in these patients. SUMMARY Vitamin D supplementation may be withheld in sarcoidosis patients with bone fragility, unless calcitriol levels are below normal limits. A treating scheme is proposed.
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Malihi Z, Wu Z, MM Lawes C, Scragg R. Noncalcemic adverse effects and withdrawals in randomized controlled trials of long-term vitamin D2 or D3 supplementation: a systematic review and meta-analysis. Nutr Rev 2017; 75:1007-1034. [DOI: 10.1093/nutrit/nux059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Saidenberg-Kermanac’h N, Valeyre D, Boissier MC. Vitamin D supplementation in patients treated for sarcoidosis: Controversy or consensus? Joint Bone Spine 2017; 84:521-523. [DOI: 10.1016/j.jbspin.2017.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/05/2017] [Indexed: 11/24/2022]
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Robertson AP, Weinreb A, Weinreb JE. Protection of Bone Density in Sarcoidosis: Can we Give Vitamin D without Causing Hypercalcemia? AACE Clin Case Rep 2017. [DOI: 10.4158/ep161608.cr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Malihi Z, Wu Z, Stewart AW, Lawes CM, Scragg R. Hypercalcemia, hypercalciuria, and kidney stones in long-term studies of vitamin D supplementation: a systematic review and meta-analysis. Am J Clin Nutr 2016; 104:1039-1051. [PMID: 27604776 DOI: 10.3945/ajcn.116.134981] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 08/03/2016] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Vitamin D supplementation is increasingly being used in higher doses in randomized controlled trials (RCTs). However, adverse events from very large annual doses of vitamin D have been shown in 2 RCTs, whereas in a third RCT, low-dose vitamin D, with calcium supplements, was shown to increase kidney stone risk. OBJECTIVE We analyzed the side effects related to calcium metabolism in RCTs, specifically hypercalcemia, hypercalciuria, and kidney stones, in participants who were given vitamin D supplements for ≥24 wk compared with in subjects in the placebo arm. DESIGN The following 3 main online databases were searched: Ovid Medline (PubMed), EMBASE, and the Cochrane Library. Software was used for the meta-analysis. RESULTS A total of 48 studies with 19,833 participants were identified, which reported ≥1 of the following side effects: hypercalcemia, hypercalciuria, or kidney stones. Of these studies, kidney stones were reported in only 9 trials with a tendency for fewer subjects reporting stones in the vitamin D arm than in the placebo arm (RR: 0.66, 95% CI: 0.41, 1.09; P = 0.10). In 37 studies, hypercalcemia was shown with increased risk shown for the vitamin D group (RR: 1.54; 95% CI: 1.09, 2.18; P = 0.01). Similar increased risk of hypercalciuria was shown in 14 studies for the vitamin D group (RR: 1.64; 95% CI: 1.06, 2.53; P = 0.03). In subgroup analyses, it was shown that the effect of vitamin D supplementation on risk of hypercalcemia, hypercalciuria, or kidney stones was not modified by baseline 25-hydroxyvitamin D, vitamin D dose and duration, or calcium co-supplementation. CONCLUSIONS Long-term vitamin D supplementation resulted in increased risks of hypercalcemia and hypercalciuria, which were not dose related. However, vitamin D supplementation did not increase risk of kidney stones. Additional large RCTs of long-term vitamin D supplementation are required to confirm these findings.
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Affiliation(s)
- Zarintaj Malihi
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Zhenqiang Wu
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Alistair W Stewart
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Carlene Mm Lawes
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Robert Scragg
- School of Population Health, University of Auckland, Auckland, New Zealand
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Sodhi A, Aldrich T. Vitamin D Supplementation: Not So Simple in Sarcoidosis. Am J Med Sci 2016; 352:252-7. [DOI: 10.1016/j.amjms.2016.05.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 11/29/2022]
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Iliceto A, Berndt SL, Greenslade JH, Parsonage WA, Hammett C, Than M, Hawkins T, Parker K, O'Kane S, Cullen L. Agreement Between Patient-reported and Cardiology-adjudicated Medical History in Patients With Possible Ischemic Chest Pain: An Observational Study. Crit Pathw Cardiol 2016; 15:121-125. [PMID: 27465009 DOI: 10.1097/hpc.0000000000000082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE Obtaining an accurate medical history is essential in the assessment of patients, particularly in emergency department (ED) patients with acute chest pain, as there can be a time imperative for diagnosis and commencement of treatment. We aimed to evaluate reliability of patient-reported compared with physician-adjudicated medical history by assessing patient's recall and communication of personal events and its influence on the accuracy of the medical history. METHODS A total of 776 patients presenting at ED with suspected cardiac chest pain were recruited. Data collection included self-reported patient history, electrocardiogram testing, and troponin I measurements. Independent assessment of risk factors and medical history was adjudicated by cardiologists. Diagnosis of acute coronary syndrome (ACS) at 30 days after presentation was assessed. Cohen's kappa measured patient-cardiologist agreement. Cardiologist adjudicated events were taken as true to assess accuracy. RESULTS A total of 83 participants (10.7%) were diagnosed with ACS at 30 days after presentation. "Previous coronary artery bypass grafting" showed highest agreement (K = 1.00) between patient-reported and cardiologist-adjudicated events. Lowest agreement between patient-reported and cardiologist-adjudicated events was found for "prior ventricular dysrhythmia" (K = 0.33). Accuracy of reported "prior congestive heart failure" differed significantly between patients with and without diagnosed ACS at 30 days (92.8% and 97.5%, respectively). CONCLUSIONS Accuracy of patient's recall and communication of medical history and risk factors was substantial but not perfect in the assessment of patients with ACS in the ED context. Our study reinforces the importance in the utilization of medical records and collateral information to address possible discrepancies in the medical history and improve patient care.
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Affiliation(s)
- Alessandro Iliceto
- From the *Department of Emergency Medicine, and Department of Cardiology, Royal Brisbane and Women's Hospital, Herston, QLD, Australia; ‡School of Medicine, The University of Queensland, St. Lucia, QLD, Australia; ¶School of Public Health, Queensland University of Technology, Kelvin Grove, QLD, Australia; and ‖Christchurch School of Medicine, University of Otago, Christchurch, New Zealand
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Bours S, de Vries F, van den Bergh JPW, Lalmohamed A, van Staa TP, Leufkens HGM, Geusens PPP, Drent M, Harvey NC. Risk of vertebral and non-vertebral fractures in patients with sarcoidosis: a population-based cohort. Osteoporos Int 2016; 27:1603-1610. [PMID: 26630976 PMCID: PMC4791462 DOI: 10.1007/s00198-015-3426-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 11/13/2015] [Indexed: 11/12/2022]
Abstract
UNLABELLED In this retrospective cohort study using the Clinical Practice Research Datalink (CPRD), patients with sarcoidosis have an increased risk of clinical vertebral fractures and when on recent treatment with oral glucocorticoids, also an increased risk of any fractures and osteoporotic fractures. INTRODUCTION Sarcoidosis is a chronic inflammatory disease, in which fragility fractures have been reported despite normal BMD. The aim of this study was to assess whether patients with sarcoidosis have an increased risk of clinical fractures compared to the general population. METHODS A retrospective cohort study was conducted using the CPRD. All patients with a CPRD code for sarcoidosis between January 1987 and September 2012 were included. Cox proportional hazards models were used to derive adjusted relative risks (RRs) of fractures in all sarcoidosis patients compared to matched controls, and within the sarcoidosis group according to use and dose of systemic glucocorticoids. RESULTS Five thousand seven hundred twenty-two sarcoidosis patients (mean age 48.0 years, 51 % females, mean follow-up 6.7 years) were identified. Compared to 28,704 matched controls, the risk of any fracture was not different in patients with sarcoidosis. However, the risk of clinical vertebral fractures was significantly increased (adj RR 1.77; 95 % CI 1.06-2.96) and the risk of non-vertebral fractures was decreased although marginally significant (adj RR 0.87; 95 % CI 0.77-0.99). Compared to sarcoidosis patients not taking glucocorticoids, recent use of systemic glucocorticoids was associated with an increased risk of any fracture (adj RR 1.50; 95 % CI 1.20-1.89) and of an osteoporotic fracture (adj RR 1.47; 95 % CI 1.07-2.02). CONCLUSIONS Patients with sarcoidosis have an increased risk of clinical vertebral fractures, and when using glucocorticoid therapy, an increased risk of any fractures and osteoporotic fractures. In contrast, the risk of non-vertebral fractures maybe decreased. Further investigation is needed to understand the underlying mechanisms of these contrasting effects on fracture risk.
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Affiliation(s)
- S Bours
- Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - F de Vries
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Utrecht, The Netherlands.
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK.
- Department of Clinical Pharmacy and Toxicology, Maastricht University Medical Centre, Maastricht, The Netherlands.
- CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, The Netherlands.
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
| | - J P W van den Bergh
- Department of Internal Medicine, Viecuri MC Venlo, Venlo, The Netherlands
- NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
- Biomedical Research Institute, Hasselt University, Hasselt, Belgium
| | - A Lalmohamed
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Utrecht, The Netherlands
- Department of Clinical Pharmacy, University Medical Center Utrecht, Utrecht, The Netherlands
| | - T P van Staa
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Utrecht, The Netherlands
- Farr Institute, University of Manchester, Manchester, UK
| | - H G M Leufkens
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute of Pharmaceutical Sciences, Utrecht, The Netherlands
| | - P P P Geusens
- Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Centre, Maastricht, The Netherlands
- Biomedical Research Institute, Hasselt University, Hasselt, Belgium
| | - M Drent
- ILD Center of Excellence, St. Antonius Hospital, Nieuwegein, The Netherlands
- Department of Pharmacology and Toxicology, FHML, University Maastricht, Maastricht, The Netherlands
| | - N C Harvey
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK
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Yee AM. Sarcoidosis: Rheumatology perspective. Best Pract Res Clin Rheumatol 2016; 30:334-356. [DOI: 10.1016/j.berh.2016.07.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 07/12/2016] [Indexed: 02/07/2023]
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Bolland MJ, Wilsher ML, Grey A, Horne AM, Fenwick S, Gamble GD, Reid IR. Bone density is normal and does not change over 2 years in sarcoidosis. Osteoporos Int 2015; 26:611-6. [PMID: 25172384 DOI: 10.1007/s00198-014-2870-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 08/21/2014] [Indexed: 10/24/2022]
Abstract
SUMMARY Small studies have previously suggested that sarcoidosis may be associated with low bone mineral density. In this observational study of 64 patients with sarcoidosis, bone mineral density was within the normal range at baseline, and there was no evidence of accelerated bone loss over 1-2 years. INTRODUCTION Several small studies have suggested that sarcoidosis may be associated with low bone mineral density (BMD). METHODS We undertook a cross-sectional study of BMD in 64 patients with sarcoidosis. Of these, 27 with 25-hydroxyvitamin D<50 nmol/L entered a 1-year intervention study of vitamin D supplements, and 37 entered a 2-year longitudinal study of BMD, with the primary endpoint of the change in lumbar spine BMD. RESULTS The mean age of participants was 58 years, 68% were female, and 8% were currently using oral glucocorticoids. At baseline, BMD for the entire cohort was greater than the expected values for the population at the lumbar spine (mean Z-score 0.7, P<0.001) and total body (0.5, P<0.001) and similar to expected values at the femoral neck (0.2, P=0.14) and total hip (0.2, P=0.14). BMD did not change at any of these four sites (P>0.19) over 2 years in the longitudinal study. In the intervention study, vitamin D supplements had no effect on BMD, and therefore we pooled the data from all participants. BMD did not change over 1 year at the spine, total hip, or femoral neck (P>0.3), but decreased by 0.7% (95% confidence interval 0.3-1.1) at the total body (P=0.019). CONCLUSIONS BMD was normal at baseline, and there was no consistent evidence of accelerated bone loss over 1-2 years, regardless of baseline vitamin D status. Patients with sarcoidosis not using oral glucocorticoids do not need routine monitoring of BMD.
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Affiliation(s)
- M J Bolland
- Department of Medicine, University of Auckland, Private Bag 92 019, Auckland, 1142, New Zealand,
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Kamphuis LS, Bonte-Mineur F, van Laar JA, van Hagen PM, van Daele PL. Calcium and vitamin D in sarcoidosis: is supplementation safe? J Bone Miner Res 2014; 29:2498-503. [PMID: 24753153 DOI: 10.1002/jbmr.2262] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 03/25/2014] [Accepted: 03/30/2014] [Indexed: 11/06/2022]
Abstract
Granulomas in sarcoidosis express high levels of 1α-hydroxylase, an enzyme that catalyzes the hydroxylation of 25-OH vitamin D to its active form, 1,25(OH)2 vitamin D. Overproduction of 1α-hydroxylase is held responsible for the development of hypercalcemia in sarcoidosis patients. Corticosteroids are used as first-line treatment in organ-threatening sarcoidosis. In this light, osteoporosis prevention with calcium and vitamin D (CAD) supplementation is often warranted. However, sarcoidosis patients are at risk for hypercalcemia, and CAD supplementation affects the calcium metabolism. We studied calcium and vitamin D disorders in a large cohort of sarcoidosis patients and investigated if CAD supplementation is safe. Retrospectively, data of 301 sarcoidosis patients from July 1986 to June 2009 were analyzed for serum calcium, 25-hydroxy vitamin D (25-(OH)D), 1,25-dihydroxy vitamin D (1,25(OH)2 D), and use of CAD supplementation. Disease activity of sarcoidosis was compared with serum levels of vitamin D. Hypercalcemia occurred in 8%. A significant negative correlation was found between 25-(OH)D and disease activity of sarcoidosis measured by somatostatin receptor scintigraphy. In our study, 5 of the 104 CAD-supplemented patients developed hypercalcemia, but CAD supplementation was not the cause of hypercalcemia. Patients without CAD supplementation were at higher risk for developing hypercalcemia. During CAD supplementation, no hypercalcemia developed as a result of supplementation. Hypovitaminosis D seems to be related with more disease activity of sarcoidosis and, therefore, could be a potential risk factor for disease activity of sarcoidosis. Thus, vitamin D-deficient sarcoidosis patients should be supplemented.
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Affiliation(s)
- Lieke S Kamphuis
- Department of Immunology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands; Department of Internal Medicine, Section of Clinical Immunology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands
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Eklund A, du Bois RM. Approaches to the treatment of some of the troublesome manifestations of sarcoidosis. J Intern Med 2014; 275:335-49. [PMID: 24433397 DOI: 10.1111/joim.12198] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Sarcoidosis can be a major therapeutic challenge given its multiplicity of clinical presentations, variable combination of organ involvement and severity, and unpredictable longitudinal behaviour. Six manifestations of sarcoidosis are especially difficult to manage because of (i) an incomplete knowledge of causation - fatigue and small fibre neuropathy, (ii) the rare occurrence in sarcoidosis - intra-abdominal complications or (iii) the potentially life-threatening consequences in some patients - neurological disease, pulmonary hypertension and hypercalcaemia. In none of these situations have a prospective, double-blind, placebo-controlled trial of any therapy been conducted. Despite this absence of any firm evidence base to support therapeutic recommendations, these six entities can be extremely problematic for the practising clinician. It is for this reason that we have focused in this review on these six disease manifestations and provided a synopsis of each problem together with suggested treatment approaches, based on an analysis of the current literature.
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Affiliation(s)
- A Eklund
- Department of Medicine, Karolinska University Hospital, Karolinska Institutet and Centre for Molecular Medicine, Stockholm, Sweden
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