scholarly journals Bone Involvement in Primary Hyperparathyroidism and Changes After Parathyroidectomy

2010 ◽  
Vol 10 (1) ◽  
pp. 84 ◽  
Author(s):  
Lars Rolighed ◽  
Lars Rejnmark ◽  
Peer Christiansen ◽  
◽  
◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Fracture Risk ◽  
Bone Metabolism ◽  
Plasma Calcium ◽  
Parathyroid Glands ◽  
Elevated Plasma ◽  
Mineral Density ◽  
High Bone Turnover ◽  
Normal Bone ◽  
High Bone

Parathyroid hormone (PTH) is produced and secreted by the parathyroid glands and has primary effects on kidney and bone. During the pathological growth of one or more parathyroid glands, the plasma level of PTH increases and causes primary hyperparathyroidism (PHPT). This disease is normally characterised by hyperparathyroid hypercalcaemia. In PHPT a continuously elevated PTH stimulates the kidney and bone causing a condition with high bone turnover, elevated plasma calcium and increased fracture risk. If bone resorption is not followed by a balanced formation of new bone, irreversible bone loss may occur in these patients. Medical treatment can help to minimise the loss of bone but the cure of PHPT is by parathyroidectomy. After operation, bone mineral density increases during the return to normal bone metabolism. Supplementation with calcium and vitamin D after operation may improve the normalisation to normal bone metabolism with a secondary reduction in fracture risk.

scholarly journals Bone Involvement in Primary Hyperparathyroidism and Changes After Parathyroidectomy

2013 ◽  
Vol 09 (02) ◽  
pp. 181 ◽  
Author(s):  
Lars Rolighed ◽  
Lars Rejnmark ◽  
Peer Christiansen ◽  
◽  
◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Fracture Risk ◽  
Bone Metabolism ◽  
Plasma Calcium ◽  
Parathyroid Glands ◽  
Elevated Plasma ◽  
Mineral Density ◽  
High Bone Turnover ◽  
Normal Bone ◽  
High Bone

Parathyroid hormone (PTH) is produced and secreted by the parathyroid glands and has primary effects on kidney and bone. During the pathologic growth of one or more parathyroid glands, the plasma level of PTH increases and causes primary hyperparathyroidism (PHPT). This disease is normally characterized by hyperparathyroid hypercalcemia. In PHPT a continuously elevated PTH stimulates the kidney and bone causing a condition with high bone turnover, elevated plasma calcium, and increased fracture risk. If bone resorption is not followed by a balanced formation of new bone, irreversible bone loss may occur in these patients. Medical treatment can help to minimize the loss of bone but the cure of PHPT is by parathyroidectomy. After operation, bone mineral density increases during the return to normal bone metabolism. Supplementation with calcium and vitamin D after operation may improve the normalization to normal bone metabolism with a secondary reduction in fracture risk.

scholarly journals Bone and Mineral Metabolism Phenotypes in MEN1-Related and Sporadic Primary Hyperparathyroidism, before and after Parathyroidectomy

Cells ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1895
Author(s):  
Francesca Marini ◽  
Francesca Giusti ◽  
Federica Cioppi ◽  
Davide Maraghelli ◽  
Tiziana Cavalli ◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Bone Mass ◽  
Bone Metabolism ◽  
Mineral Metabolism ◽  
Parathyroid Tissue ◽  
Young Patients ◽  
Surgical Removal ◽  
Mineral Density ◽  
Bone Mass Loss ◽  
Before And After

Primary hyperparathyroidism (PHPT) is the most common endocrinopathy in multiple endocrine neoplasia type 1 (MEN1). Persistent levels of increased parathyroid hormone (PTH) result in a higher incidence of osteopenia and osteoporosis compared to the general population. Surgical removal of hyper-functioning parathyroid tissue is the therapy of choice. This retrospective study evaluated the effect of parathyroidectomy (PTX) on bone metabolism and bone mass in two series of patients with MEN1 PHPT and sporadic PHPT (sPHPT) by comparing bone metabolism-related biochemical markers and bone mineral density (BMD) before and after surgery. Our data confirmed, in a higher number of cases than in previously published studies, the efficacy of PTX, not only to rapidly restore normal levels of PTH and calcium, but also to normalize biochemical parameters of bone resorption and bone formation, and to improve spine and femur bone mass, in both MEN1 PHPT and sPHPT. Evaluation of single-patient BMD changes after surgery indicates an individual variable bone mass improvement in a great majority of MEN1 PHPT patients. In MEN1 patients, PTX is strongly suggested in the presence of increased PTH and hypercalcemia to prevent/reduce the early-onset bone mass loss and grant, in young patients, the achievement of the bone mass peak; routine monitoring of bone metabolism and bone mass should start from adolescence. Therapy with anti-fracture drugs is indicated in MEN1 patients with BMD lower than the age-matched normal values.

scholarly journals Skeletal Microstructure and Estimated Bone Strength Improve Following Parathyroidectomy in Primary Hyperparathyroidism

2017 ◽  
Vol 103 (1) ◽  
pp. 196-205 ◽  
Author(s):  
Natalie E Cusano ◽  
Mishaela R Rubin ◽  
Barbara C Silva ◽  
Yu-Kwang Donovan Tay ◽  
John M Williams ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bone Density ◽  
Primary Hyperparathyroidism ◽  
Fracture Risk ◽  
Bone Strength ◽  
Failure Load ◽  
Mineral Density ◽  
Element Analysis ◽  
Volumetric Bone Density

Abstract Context High-resolution peripheral quantitative computed tomography (HRpQCT) is a noninvasive imaging technology that can provide insight into skeletal microstructure and strength. In asymptomatic primary hyperparathyroidism (PHPT), HRpQCT imaging has demonstrated both decreased cortical and trabecular indices, consistent with evidence for increased fracture risk. There are limited data regarding changes in HRpQCT parameters postparathyroidectomy. Objective To evaluate changes in skeletal microstructure by HRpQCT in subjects with PHPT after parathyroidectomy. Design We studied 29 subjects with PHPT (21 women, 8 men) with HRpQCT at baseline and 6, 12, 18, and 24 months postparathyroidectomy. Main Outcome Measures Volumetric bone mineral density, microarchitectural indices, and finite element analysis at the distal radius and tibia. Results At both the radius and tibia, there were significant improvements in total, cortical, and trabecular volumetric bone density as early as 6 months postparathyroidectomy (24-month values for total volumetric bone density, radius: +2.8 ± 4%, tibia: +4.4 ± 4%; P < 0.0001 for both), cortical thickness (radius: +1.1 ± 2%, tibia: +2.0 ± 3%; P < 0.01 for both), and trabecular bone volume (radius: +3.8 ± 5%, tibia: +3.2 ± 4%; P < 0.0001 for both). At both sites, by finite element analysis, stiffness and failure load were improved starting at 6 months postparathyroidectomy (24-month values for failure load, radius: +6.2 ± 6%, tibia: +4.8 ± 7%; P < 0.0001 for both). Conclusions These results provide information about skeletal microarchitecture in subjects with PHPT followed through 2 years after parathyroidectomy. Estimated bone strength is improved, consistent with data showing decreased fracture risk postparathyroidectomy.

scholarly journals Iatrogenic lesions of the skeleton

2017 ◽  
Vol 20 (4) ◽  
pp. 19-25
Author(s):  
Galina A. Melnichenko ◽  
Elizaveta O. Mamedova
Keyword(s):  
Risk Factors ◽  
Fracture Risk ◽  
Bone Metabolism ◽  
Negative Impact ◽  
Public Health Problem ◽  
Osteoporotic Fractures ◽  
Mineral Density ◽  
Level Of Evidence ◽  
Important Public Health Problem

Osteoporotic fractures are an important public health problem due to their negative impact on the quality of life and life expectancy, as well as high cost of treatment and rehabilitation. Along with the major risk factors for osteoporotic fractures, such as low bone mineral density (BMD), age, low body weight, frequent falls and previous fractures, an important secondary risk factor, especially among susceptible individuals, is taking certain medications. The difficulty in assessing fracture risk when taking various drugs, as well as the development of appropriate methods of prevention and treatment, is often due to the absence of large randomized trials with a sufficient level of evidence, as well as the heterogeneity of the main risk factors for fractures in studied groups of patients. We focus on the main groups of drugs for which there is evidence of a negative impact on bone metabolism, BMD and fracture risk. In addition to drugs, bone metabolism is also influenced by bariatric surgery, transplantation of solid organs, gonadectomy for various diseases. This article is the RePrint from the original publication in Obesity and Metabolism 2016; 13(2); pp. 41-47. doi: 10.14341/omet2016241-47

scholarly journals Brown tumor of the jaw after pregnancy and lactation in a MEN1 patient

2016 ◽  
Vol 2016 ◽  
Author(s):  
Anna Casteràs ◽  
Lídia Darder ◽  
Carles Zafon ◽  
Juan Antonio Hueto ◽  
Margarita Alberola ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Primary Hyperparathyroidism ◽  
Bone Mineral ◽  
Parathyroid Glands ◽  
Brown Tumor ◽  
Mineral Density ◽  
Men 1 ◽  
Pregnancy And Lactation ◽  
Brown Tumors

Summary Skeletal manifestations of primary hyperparathyroidism (pHPT) include brown tumors (BT), which are osteoclastic focal lesions often localized in the jaws. Brown tumors are a rare manifestation of pHTP in Europe and USA; however, they are frequent in developing countries, probably related to vitamin D deficiency and longer duration and severity of disease. In the majority of cases, the removal of the parathyroid adenoma is enough for the bone to remineralize, but other cases require surgery. Hyperparathyroidism in MEN1 develops early, and is multiglandular and the timing of surgery remains questionable. To our knowledge, there are no reports of BT in MEN 1 patients. We present a 29-year-old woman with MEN 1 who developed a brown tumor of the jaw 24 months after getting pregnant, while breastfeeding. Serum corrected calcium remained under 2.7 during gestation, and at that point reached a maximum of 2.82 mmol/L. Concomitant PTH was 196 pg/mL, vitamin D 13.7 ng/mL and alkaline phosphatase 150 IU/L. Bone mineral density showed osteopenia on spine and femoral neck (both T-scores = −1.6). Total parathyroidectomy was performed within two weeks, with a failed glandular graft autotransplantation, leading to permanent hypoparathyroidism. Two months after removal of parathyroid glands, the jaw tumor did not shrink; thus, finally it was successfully excised. We hypothesize that higher vitamin D and mineral requirements during maternity may have triggered an accelerated bone resorption followed by appearance of the jaw BT. We suggest to treat pHPT before planning a pregnancy in MEN1 women or otherwise supplement with vitamin D, although this approach may precipitate severe hypercalcemia. Learning points: Brown tumors of the jaw can develop in MEN 1 patients with primary hyperparathyroidism at a young age (less than 30 years). Pregnancy and lactation might trigger brown tumors by increasing mineral and vitamin D requirements. Early parathyroidectomy is advisable in MEN 1 patients with primary hyperparathyroidism, at least before planning a pregnancy. Standard bone mineral density does not correlate with the risk of appearance of a brown tumor. Removal of parathyroid glands does not always lead to the shrinkage of the brown tumor, and surgical excision may be necessary.

Low bone mineral density and high bone metabolism turnover in premenopausal women with unipolar depression

Bone ◽  
2008 ◽  
Vol 42 (3) ◽  
pp. 582-590 ◽  
Author(s):  
Milan Petronijević ◽  
Nataša Petronijević ◽  
Maja Ivković ◽  
Dušan Stefanović ◽  
Nevena Radonjić ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Metabolism ◽  
Bone Mineral ◽  
Premenopausal Women ◽  
Unipolar Depression ◽  
Mineral Density ◽  
Low Bone Mineral Density ◽  
High Bone

Long-Term Skeletal Outcomes of Primary Hyperparathyroidism Patients After Treatment with Parathyroidectomy: A Systematic Review and Meta-Analysis

2018 ◽  
Vol 50 (03) ◽  
pp. 242-249 ◽  
Author(s):  
Lu Zhang ◽  
Xiaomei Liu ◽  
Hongwei Li
Keyword(s):  
Lumbar Spine ◽  
Primary Hyperparathyroidism ◽  
Fracture Risk ◽  
Weighted Mean Difference ◽  
Controlled Trials ◽  
Cochrane Central Register ◽  
Mineral Density ◽  
Risk Of Fracture ◽  
Statistical Heterogeneity

AbstractThe aim of the study was to assess and define the association between parathyroidectomy (PTX) and long-term skeletal outcomes in primary hyperparathyroidism (PHPT) patients. PubMed, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials were systematically searched up to June 31, 2017, without language restriction. Any study comparing skeletal outcomes [fracture risk or bone mineral density (BMD)] of PHPT patients after more than 12 months of PTX treatment versus non-PTX treatment was included. Pooled relative risks or odds ratios with 95% confidence intervals and weighted mean difference were calculated using random-effects models irrespective of statistical heterogeneity assessed by I2 statistic. Finally, 5 randomized controlled trials (RCTs, n=584) and 10 cohort studies (CSs, n=12202) were included. CSs suggest PTX treatment versus non-PTX treatment is significantly associated with 36% reduction in the risk of fracture, with no heterogeneity, and an increase in the lumbar spine change by 0.55 WMD, with no heterogeneity. RCTs indicate PTX treatment versus non-PTX treatment is significantly associated with BMD change of 0.97 WMD at the lumbar spine with substantial heterogeneity, and 1.23 WMD at the femoral neck with no heterogeneity. The existing CSs indicate PTX-treatment versus non-PTX-treatment might reduce the risk of fracture in PHPT patients. The existing RCTs do not provide sufficient or precise evidence that PTX-treatment affects the fracture risk of PHPT patients, but offer data that subsets of patients who could potentially benefit from PTX-treatment can be identified.

scholarly journals Bone Mineral Density Compared to Trabecular Bone Score in Primary Hyperparathyroidism

2022 ◽  
Vol 11 (2) ◽  
pp. 330
Author(s):  
Alicia R. Jones ◽  
Koen Simons ◽  
Susan Harvey ◽  
Vivian Grill
Keyword(s):  
Bone Mineral Density ◽  
Lumbar Spine ◽  
Primary Hyperparathyroidism ◽  
Fracture Risk ◽  
Trabecular Bone ◽  
Bone Quality ◽  
Bone Mineral ◽  
Trabecular Bone Score ◽  
Statistical Significance ◽  
Mineral Density

Individuals with primary hyperparathyroidism (PHPT) have reduced bone mineral density (BMD) according to dual X-ray absorptiometry at cortical sites, with relative sparing of trabecular BMD. However, fracture risk is increased at all sites. Trabecular bone score (TBS) may more accurately describe their bone quality and fracture risk. This study compared how BMD and TBS describe bone quality in PHPT. We conducted a retrospective cross-sectional study with a longitudinal component, of adults with PHPT, admitted to a tertiary hospital in Australia over ten years. The primary outcome was the TBS at the lumbar spine, compared to BMD, to describe bone quality and predict fractures. Secondary outcomes compared changes in TBS after parathyroidectomy. Of 68 included individuals, the mean age was 65.3 years, and 79% were female. Mean ± SD T-scores were −1.51 ± 1.63 at lumbar spine and mean TBS was 1.19 ± 0.12. Only 20.6% of individuals had lumbar spine BMD indicative of osteoporosis, while 57.4% of TBS were ≤1.20, indicating degraded architecture. There was a trend towards improved fracture prediction using TBS compared to BMD which did not reach statistical significance. Comparison of 15 individuals following parathyroidectomy showed no improvement in TBS.

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