scholarly journals MECHANISMS IN ENDOCRINOLOGY: Endogenous subclinical hypercortisolism and bone: a clinical review

2016 ◽  
Vol 175 (6) ◽  
pp. R265-R282 ◽  
Author(s):  
I Chiodini ◽  
C Eller Vainicher ◽  
V Morelli ◽  
S Palmieri ◽  
E Cairoli ◽  
...  
Keyword(s):  
Bone Quality ◽  
Fragility Fractures ◽  
Primary Osteoporosis ◽  
Mineral Density ◽  
Subclinical Hypercortisolism ◽  
Biochemical Tests ◽  
Glucocorticoid Sensitivity ◽  
Increased Risk ◽  
The Individual ◽  
Specific Symptoms

In recent years, the condition of subclinical hypercortisolism (SH) has become a topic of growing interest. This is due to the fact that SH prevalence is not negligible (0.8–2% in the general population) and that, although asymptomatic, this subtle cortisol excess is not harmless, being associated with an increased risk of complications, in particular of osteoporosis and fragility fractures. As specific symptoms of hypercortisolism are absent in SH, the SH diagnosis relies only on biochemical tests and it is a challenge for physicians. As a consequence, even the indications for the evaluation of bone involvement in SH patients are debatable and guidelines are not available. Finally, the relative importance of bone density, bone quality and glucocorticoid sensitivity in SH is a recent field of research. On the other hand, SH prevalence seems to be increased in osteoporotic patients, in whom a vertebral fracture may be the presenting symptom of an otherwise asymptomatic cortisol excess. Therefore, the issue of who and how to screen for SH among the osteoporotic patients is widely debated. The present review will summarize the available data regarding the bone turnover, bone mineral density, bone quality and risk of fracture in patients with endogenous SH. In addition, the role of the individual glucocorticoid sensitivity in SH-related bone damage and the problem of diagnosing and managing the bone consequences of SH will be reviewed. Finally, the issue of suspecting and screening for SH patients with apparent primary osteoporosis will be addressed.

scholarly journals DXA parameters, Trabecular Bone Score (TBS) and Bone Mineral Density (BMD), in fracture risk prediction in endocrine-mediated secondary osteoporosis

Endocrine ◽  
2021 ◽  
Author(s):  
Enisa Shevroja ◽  
Francesco Pio Cafarelli ◽  
Giuseppe Guglielmi ◽  
Didier Hans
Keyword(s):  
Bone Mineral Density ◽  
Trabecular Bone ◽  
Bone Mineral ◽  
Trabecular Bone Score ◽  
Bone Microarchitecture ◽  
Fragility Fractures ◽  
Endocrine Disorders ◽  
Mineral Density ◽  
Increased Risk

AbstractOsteoporosis, a disease characterized by low bone mass and alterations of bone microarchitecture, leading to an increased risk for fragility fractures and, eventually, to fracture; is associated with an excess of mortality, a decrease in quality of life, and co-morbidities. Bone mineral density (BMD), measured by dual X-ray absorptiometry (DXA), has been the gold standard for the diagnosis of osteoporosis. Trabecular bone score (TBS), a textural analysis of the lumbar spine DXA images, is an index of bone microarchitecture. TBS has been robustly shown to predict fractures independently of BMD. In this review, while reporting also results on BMD, we mainly focus on the TBS role in the assessment of bone health in endocrine disorders known to be reflected in bone.

scholarly journals Management of primary and secondary osteoporosis in children

2020 ◽  
Vol 12 ◽  
pp. 1759720X2096926
Author(s):  
Sophia D. Sakka ◽  
Moira S. Cheung
Keyword(s):  
Bone Fractures ◽  
Bone Biopsy ◽  
Treatment Options ◽  
Quantitative Computed Tomography ◽  
Fragility Fractures ◽  
Secondary Osteoporosis ◽  
Long Bone ◽  
Vertebral Fracture Assessment ◽  
Primary Osteoporosis ◽  
Mineral Density

Osteoporosis in children differs from adults in terms of definition, diagnosis, monitoring and treatment options. Primary osteoporosis comprises primarily of osteogenesis imperfecta (OI), but there are significant other causes of bone fragility in children that require treatment. Secondary osteoporosis can be a result of muscle disuse, iatrogenic causes, such as steroids, chronic inflammation, delayed or arrested puberty and thalassaemia major. Investigations involve bone biochemistry, dual-energy X-ray absorptiometry scan for bone densitometry and vertebral fracture assessment, radiographic assessment of the spine and, in some cases, quantitative computed tomography (QCT) or peripheral QCT. It is important that bone mineral density (BMD) results are adjusted based on age, gender and height, in order to reflect size corrections in children. Genetics are being used increasingly for the diagnosis and classification of various cases of primary osteoporosis. Bone turnover markers are used less frequently in children, but can be helpful in monitoring treatment and transiliac bone biopsy can assist in the diagnosis of atypical cases of osteoporosis. The management of children with osteoporosis requires a multidisciplinary team of health professionals with expertise in paediatric bone disease. The prevention and treatment of fragility fractures and improvement of the quality of life of patients are important aims of a specialised service. The drugs used most commonly in children are bisphosphonates, that, with timely treatment, can give good results in improving BMD and reshaping vertebral fractures. The data regarding their effect on reducing long bone fractures are equivocal. Denosumab is being used increasingly for various conditions with mixed results. There are more drugs trialled in adults, but these are not yet licenced for children. Increasing awareness of risk factors for paediatric osteoporosis, screening and referral to a specialist team for appropriate management can lead to early detection and treatment of asymptomatic fractures and prevention of further bone damage.

scholarly journals Influence of Hyponatremia on Spinal Bone Quality and Fractures Due to Low-Energy Trauma

Medicina ◽  
2021 ◽  
Vol 57 (11) ◽  
pp. 1224
Author(s):  
Katharina Jäckle ◽  
Friederike Klockner ◽  
Daniel Bernd Hoffmann ◽  
Paul Jonathan Roch ◽  
Maximilian Reinhold ◽  
...  
Keyword(s):  
Bone Quality ◽  
Serum Sodium ◽  
Quantitative Computed Tomography ◽  
Low Energy ◽  
Fracture Rate ◽  
Mineral Density ◽  
Body Fracture ◽  
Increased Risk ◽  
Chronic Hyponatremia ◽  
Trauma Group

Background and Objectives: Hyponatremia is the most common electrolyte disorder in elderly and associated with increased risk of falls. Clinical studies as well as small animal experiments suggested an association between chronic hyponatremia and osteoporosis. Furthermore, it has been assumed that subtle hyponatremia may be an independent fracture risk in the elderly. Therefore, this study was designed to evaluate the possible influence of chronic hyponatremia on osteoporosis and low-energy fractures of the spine. Materials and Methods: 144 patients with a vertebral body fracture (mean age: 69.15 ± 16.08; 73 females and 71 males) due to low-energy trauma were treated in a level one trauma center within one year and were included in the study. Chronic hyponatremia was defined as serum sodium < 135 mmol/L at admission. Bone mineral density (BMD) of the spine was measured using quantitative computed tomography in each patient. Results: Overall, 19.44% (n = 28) of patients in the low-energy trauma group had hyponatremia. In the group with fractures caused by low-energy trauma, the proportion of hyponatremia of patients older than 65 years was significantly increased as compared to younger patients (p** = 0.0016). Furthermore, there was no significant gender difference in the hyponatremia group. Of 28 patients with chronic hyponatremia, all patients had decreased bone quality. Four patients showed osteopenia and the other 24 patients even showed osteoporosis. In the low-energy trauma group, the BMD correlated significantly with serum sodium (r = 0.396; p*** < 0.001). Conclusions: The results suggest that chronic hyponatremia affects bone quality. Patients with chronic hyponatremia have an increased prevalence of fractures after low-energy trauma due to a decreased bone quality. Therefore, physicians from different specialties should focus on the treatment of chronic hyponatremia to reduce the fracture rate after low-energy trauma, particularly with elderly patients.

Vertebral bone quality score predicts fragility fractures independently of bone mineral density

2020 ◽  
Vol 20 (9) ◽  
pp. S48
Author(s):  
Jeff Ehresman ◽  
Andrew Schilling ◽  
Xinghai Yang ◽  
Zach Pennington ◽  
A. Karim Ahmed ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Quality ◽  
Bone Mineral ◽  
Fragility Fractures ◽  
Quality Score ◽  
Mineral Density ◽  
Vertebral Bone

Selenium: A Trace Element for a Healthy Skeleton - A Narrative Review

2020 ◽  
Vol 20 ◽  
Author(s):  
Fabio Vescini ◽  
Iacopo Chiodini ◽  
Andrea Palermo ◽  
Roberto Cesareo ◽  
Vincenzo De Geronimo ◽  
...  
Keyword(s):  
Bone Mass ◽  
Bone Metabolism ◽  
Bone Cells ◽  
Fragility Fractures ◽  
Serum Selenium ◽  
Mineral Density ◽  
Increased Risk ◽  
Serum Selenium Levels ◽  
Essential Nutrient ◽  
The Relationship

: Inadequate serum selenium levels may delay the growth and the physiological changes in bone metabolism. In humans, reduced serum selenium concentrations are associated with both increased bone turnover and reduced bone mineral density. Moreover, a reduced nutritional intake of selenium may lead to an increased risk of bone disease. Therefore, selenium is an essential nutrient playing a role in bone health, probably due to specific selenium-proteins. Some selenium-proteins have an anti-oxidation enzymatic activity and participate in maintaining the redox cellular balance, regulating inflammation and proliferation/differentiation of bone cells too. At least nine selenium-proteins are known to be expressed by fetal osteoblasts and appear to protect bone cells from oxidative stress at bone microenvironment. Mutations of selenium-proteins and reduced circulating levels of selenium are known to be associated with skeletal diseases such as the Kashin-Beck osteoarthropathy and postmenopausal osteoporosis. In addition, the intake of selenium appears to be inversely related to the risk of hip fragility fractures. Recent data suggest that an altered selenium state may affect bone mass even in males and seleniumproteins and selenium concentrations were positively associated with the bone mass at femoral, total and trochanteric site. However, selenium, but not selenium-proteins, seems to be associated with femoral neck bone mass after adjustment for many bone fracture risk factors. The present review summarizes the findings of observational and interventional studies, which have been designed for investigating the relationship between selenium and bone metabolism.

scholarly journals Nutrients and Dietary Patterns Related to Osteoporosis

Nutrients ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1986 ◽  
Author(s):  
Araceli Muñoz-Garach ◽  
Beatriz García-Fontana ◽  
Manuel Muñoz-Torres
Keyword(s):  
Vitamin D ◽  
Dietary Patterns ◽  
Scientific Evidence ◽  
Complex Mixture ◽  
Public Health Problem ◽  
Fragility Fractures ◽  
Major Public Health Problem ◽  
Mineral Density ◽  
Common Chronic Disease ◽  
Increased Risk

Osteoporosis is a common chronic disease characterized by a decrease in bone mineral density, impaired bone strength, and an increased risk of fragility fractures. Fragility fractures are associated with significant morbidity, mortality and disability and are a major public health problem worldwide. The influence of nutritional factors on the development and progression of this disease can be significant and is not yet well established. Calcium intake and vitamin D status are considered to be essential for bone metabolism homeostasis. However, some recent studies have questioned the usefulness of calcium and vitamin D supplements in decreasing the risk of fractures. The adequate intake of protein, vegetables and other nutrients is also of interest, and recommendations have been established by expert consensus and clinical practice guidelines. It is important to understand the influence of nutrients not only in isolation but also in the context of a dietary pattern, which is a complex mixture of nutrients. In this review, we evaluate the available scientific evidence for the effects of the main dietary patterns on bone health. Although some dietary patterns seem to have beneficial effects, more studies are needed to fully elucidate the true influence of diet on bone fragility.

Bone Health in Adults Treated with Endocrine Therapy for Early Breast or Prostate Cancer

2015 ◽  
pp. e567-e574 ◽  
Author(s):  
Catherine H. Van Poznak
Keyword(s):  
Prostate Cancer ◽  
Vitamin D ◽  
Bone Resorption ◽  
Endocrine Therapy ◽  
Sex Hormones ◽  
Bone Health ◽  
Estrogen Therapy ◽  
Fragility Fractures ◽  
Mineral Density ◽  
Increased Risk

Bone is a hormonally responsive organ. Sex hormones and calcium regulating hormones, including parathyroid hormone, 1–25 dihydroxy vitamin D, and calcitonin, have effects on bone resorption and bone deposition. These hormones affect both bone quality and bone quantity. The sex hormone estrogen inhibits bone resorption, and estrogen therapy has been developed to prevent and treat osteoporosis. Androgens are an important source of estrogen through the action of the enzyme aromatase and may themselves stimulate bone formation. Hence, the sex steroids play a role in bone metabolism. Breast cancer and prostate cancer are frequently hormonally responsive and may be treated with antiestrogens or antiandrogens respectfully. In addition, chemotherapy and supportive medications may alter the patient's endocrine system. In general, the suppression of sex hormones has a predictable affect on bone health, as seen by loss of bone mineral density and increased risk of fragility fractures. The bone toxicity of cancer-directed endocrine therapy can be mitigated through screening, counseling on optimization of calcium and vitamin D intake, exercise, and other lifestyle/behavioral actions, as well as the use of medications when the fracture risk is high. Maintaining bone health in patients who are treated with endocrine therapy for breast and prostate cancer is the focus of this review.

Insights into the genetics of osteoporosis from recent genome-wide association studies

2011 ◽  
Vol 13 ◽  
Author(s):  
Hou-Feng Zheng ◽  
Timothy D. Spector ◽  
J. Brent Richards
Keyword(s):  
Rare Variants ◽  
Association Studies ◽  
Fragility Fractures ◽  
Fracture Prevention ◽  
Genome Wide Association ◽  
Genome Wide Association Studies ◽  
Mineral Density ◽  
Genome Wide ◽  
Increased Risk ◽  
Genetics Of Osteoporosis

Osteoporosis, which is characterised by reduced bone mineral density (BMD) and an increased risk of fragility fractures, is the result of a complex interaction between environmental factors and genetic variants that confer susceptibility. Heritability studies have shown that BMD and other osteoporosis-related traits such as ultrasound properties of bone, skeletal geometry and bone turnover have significant inheritable components. Although previous linkage and candidate gene studies have provided few replicated loci for osteoporosis, genome-wide association approaches have produced clear and reproducible findings. To date, 20 genome-wide association studies (GWASs) for osteoporosis and related traits have been conducted, identifying dozens of genes. Further meta-analyses of GWAS data and deep resequencing of rare variants will uncover more novel susceptibility loci and ultimately provide possible therapeutic targets for fracture prevention.

scholarly journals Bone mineral density and microarchitecture among Chinese patients with rheumatoid arthritis: a cross-sectional study with HRpQCT

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Shangyi Jin ◽  
Mengtao Li ◽  
Qian Wang ◽  
Xiaofeng Zeng ◽  
Weibo Xia ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Bone Mineral Density ◽  
Bone Mineral ◽  
Bone Microarchitecture ◽  
Fragility Fractures ◽  
Cross Sectional Study ◽  
Mineral Density ◽  
Cross Sectional ◽  
X Ray ◽  
Increased Risk

Abstract Background Patients with rheumatoid arthritis (RA) are at increased risk of fractures. Although their decline in bone mineral density (BMD) is well-established, data regarding the alterations in bone microarchitecture are limited. In this study, we aimed to evaluate bone microarchitecture, geometry, and volumetric BMD among patients with RA in mainland China using high-resolution peripheral quantitative computed tomography (HRpQCT). Methods In this cross-sectional study, patients with RA were recruited from the Peking Union Medical College Hospital site of the Chinese Registry of rhEumatoiD arthrITis (CREDIT). Each participant underwent HRpQCT scanning (Scanco XtremeCT II), thoracolumbar X-ray and dual-energy X-ray absorptiometry. The primary outcomes were HRpQCT-related measures at distal radius and tibia. Data regarding demographic features, RA-related characteristics, and history of fragility fractures were collected. Correlation between HRpQCT parameters and potentially related factors were analyzed using linear regression analysis. A group of age- and sex-matched healthy controls was included for comparison. Results A total of 81 patients with RA [69 women, aged 57.9 ± 8.7 years, disease duration 5.7 (IQR 1.4–11.2) years] and 81 matched healthy controls were included. Compared with controls, patients with RA had significantly larger bone area and lower total and trabecular vBMD at both the distal radius and tibia. Lower cortical bone thickness was also shown at the distal tibia. Among patients with RA, advanced age, low BMI, female sex, disease duration, and activity were associated with decreased vBMD and impaired bone microstructure. Female reproductive factors including menopause, late menarche, breast feeding, and early childbirth also showed negative correlation with these parameters. Compared to patients with RA without fractures, patients with fragility fractures (n = 11) showed lower trabecular and cortical vBMD, thinner cortical bone, impaired trabecular microstructure, and a trend of declined bone strength. Current glucocorticoid intake was related to decreased vBMD, trabecular number, increased trabecular separation, and inhomogeneity. Conclusions In this study, we observed alterations in bone mineral density, geometry, and microarchitecture among patients with RA compared to healthy individuals, which may impair bone strength and lead to increased risk of fractures. Both traditional risk factors for osteoporosis and RA-associated factors need to be considered in the assessment of the bone quality.

scholarly journals SAT0468 EFFECTS OF ANDROGEN DEPRIVATION THERAPY ON BONE QUALITY (TBS) IN PATIENTS WITH PROSTATE CANCER

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1191.2-1192
Author(s):  
S. Garcia-Cirera ◽  
E. Casado ◽  
J. Muñoz ◽  
L. Del Río ◽  
M. Arévalo ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Lumbar Spine ◽  
Androgen Deprivation Therapy ◽  
Bone Quality ◽  
Bone Microarchitecture ◽  
Androgen Deprivation ◽  
Mineral Density ◽  
Increased Risk ◽  
One Year

Background:Androgen deprivation therapy (ADT), by inducing severe hypogonadism, leads to a loss of bone mineral density (BMD) and an increased risk of fragility fractures after 6 months of treatment in men with prostate cancer1. However, its effect on bone quality has not been described.Objectives:To evaluate the changes on bone microarchitecture (bone quality) assessed by TBS (trabecular Bone Score) in male patients with prostate cancer after one year of treatment with ADT.Methods:All patients diagnosed with prostate cancer candidates for long-term ADT admitted to Urology department of Hospital Universitari Parc Tauli (reference population of 450,000 inhabitants) between April 2017 and December 2019 were included. Patients who received chemotherapy, previous hormonal therapy or specific treatment for osteoporosis in the last year or those who had a very impaired functional capacity (Barthel index <30) were excluded.Demographic, clinical and analytical data (testosterone, calcium, phosphorous, alkaline phosphatase, 25-hidroxyvitamin D, PTH) were collected in all patients. A bone densitometry (GE-Lunar Prodigy) including the measurement of lumbar spine TBS (L1-L4) using Medimaps Software was performed at baseline and at 12 months of treatment with ADT.Results:78 patients were included. Mean age 77,9±8,3 years. The median Gleason score was 7,88±1,05. 3 patients had previous fragility fracture (one sacral fracture, one fibula and one multiple vertebral fracture). Baseline analytical values in patients were the following: testosterone11,6±74,9 nmol/L.; 25-hidroxyvitamin D 20,8±10,4 ng/ml; PTH 51,8±23,0 pg/ml; CTX 0,58±0,66. The daily calcium intake was 573±207 mg/day.According to BMD, 17 patients (21,8%) had osteoporosis before starting ADT, with the following average T-score values: lumbar spine +0,15±1,85, femoral neck -1,75±1,00, and total hip -1,19±1,16. Mean baseline TBS value of the entire cohort was 1,279±0,122. 30,5% of the patients showed very degraded microarchitecture (TBS<1,230), 28,8% had partially degraded microarchitecture (TBS 1,230-1,310) and in 40,7% showed normal microarchitecture (TBS >1,310).After one year of ADT treatment, TBS mildly worsened in this cohort, with a median value of 1,256±0,131 (p = NS). However up to 43% of patients reached highly degraded microarchitecture, 27% partially degraded and only 29,5% had a normal TBS (p = NS).Conclusion:Most patients with prostate cancer have an altered bone quality before starting ADT. After 12 months of treatment, the percentage of patients with highly degraded bone microarchitecture increases, although not significantly. More studies are needed to confirm this trend and to evaluate if these patients present more long-term fractures.References:[1]Lee R, et al. Bone 2011; 48 (1): 88-95Disclosure of Interests:Silvia Garcia-Cirera: None declared, Enrique Casado Speakers bureau: UCB, Lilly, Amgen, Theramex, Gebro, Gedeon-Richter, Stada, Jesús Muñoz: None declared, Luis Del Río: None declared, Marta Arévalo: None declared, Menna Rusiñol: None declared, Noemí Navarro: None declared, Víctor Parejo: None declared, Jordi Gratacos-Masmitja Grant/research support from: a grant from Pfizzer to study implementation of multidisciplinary units to manage PSA in SPAIN, Consultant of: Pfizzer, MSD, ABBVIE, Janssen, Amgen, BMS, Novartis, Lilly, Speakers bureau: Pfizzer, MSD, ABBVIE, Janssen, Amgen, BMS, Novartis, Lilly

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