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Freda PU. Impact of medical therapy for hormone-secreting Pituitary tumors on bone. Pituitary 2024:10.1007/s11102-024-01421-z. [PMID: 38967763 DOI: 10.1007/s11102-024-01421-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/22/2024] [Indexed: 07/06/2024]
Abstract
PURPOSE Bone health is often impaired in patients with hormone-secreting pituitary tumors. Since medical therapy is central to their care, understanding how its use impacts on this is highly important. METHODS This review summarizes a systemmatic review of the literature on the effects of medical therapies for hormone-secreting pituitary tumors on bone. RESULTS In acromegaly, medical therapy lowers bone turnover marker (BTM) levels, consistent with correction of the high bone turnover of active disease, and overall, areal bone mineral density (aBMD) does not change or increases. Somatostatin-receptor ligand (SRL) and pegvisomant-treated acromegaly patients have persistently reduced volumetric BMD and microarchitectural abnormalities of the peripheral skeleton, deficits that are similar to those in surgically-treated patients. Fracture risk remains elevated in medically-treated acromegaly patients but in conjunction with biochemical control the risk is lessened. Treatment of prolactin-secreting tumors with dopamine agonists is associated with improvements in aBMD, but this does not always fully normalize despite effective medical treatment of the prolactinoma. In one cross-sectional study, prolactinoma patients had lower total volumetric BMD and impaired microarchitecture suggesting that bone microstructure does not fully normalize despite dopamine agonist therapy. Cross-sectional studies show a high rate of VF in patients with prolactin-secreting tumors that is lowered on cabergoline therapy, but still the fracture rate of men and postmenopausal women is higher than that of controls in some studies. Studies on the effects of modern-day medical therapy for Cushing's disease on bone are lacking. CONCLUSION More research is needed on the effectsof medical therapies for hormone secreting pituitary tumors on bone health.
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Affiliation(s)
- Pamela U Freda
- Department of Medicine, Vagelos College of Physicians & Surgeons Columbia University, 650 West 168th Street 10-1014, New York, NY, 10032, USA.
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2
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Freda PU. Differences between bone health parameters in adults with acromegaly and growth hormone deficiency: A systematic review. Best Pract Res Clin Endocrinol Metab 2023; 37:101824. [PMID: 37798201 PMCID: PMC10843107 DOI: 10.1016/j.beem.2023.101824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Preserving bone health is an important goal of care of patients with acromegaly and growth hormone deficiency (GHD). Both disorders are associated with compromised bone health and an increased risk of fracture. However, parameters of bone health that are routinely used to predict fractures in other populations, such as aBMD measured by DXA, are unreliable for this in acromegaly and GHD. Additional methodologies need to be employed to assess bone health in these patients. This review summarizes available data on the effects of acromegaly and GHD on parameters of bone health such as aBMD, volumetric bone mineral density (vBMD) and microarchitecture assessed by HRpQCT and other techniques, trabecular bone score (TBS) and fracture assessment. More research is needed to identify reliable predictors of fracture risk and to determine how best to screen for and treat those patients at risk so that bone health is optimized in these patients.
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Affiliation(s)
- Pamela U Freda
- Vagelos College of Physicians and Surgeons, Columbia University, New York.
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Sorohan MC, Baciu IF, Galoiu SA, Niculescu DA, Caragheorgheopol A, Iordachescu CN, Poiana C. Acromegaly versus hypogonadism: Bone fragility and evaluation. ANNALES D'ENDOCRINOLOGIE 2023; 84:719-726. [PMID: 37689348 DOI: 10.1016/j.ando.2023.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/22/2023] [Accepted: 08/19/2023] [Indexed: 09/11/2023]
Abstract
INTRODUCTION Osteopathy in patients with acromegaly is characterized by increased prevalence of vertebral fragility fractures (VF). However, the diagnostic criteria for osteoporosis are seldomly met in terms of bone mineral density (BMD), as patients with acromegaly frequently present normal BMD for age and gender. METHODOLOGY We performed a cross-sectional study on 71 patients with acromegaly and 75 patients with hypogonadism. Turnover markers comprised alkaline phosphatase, osteocalcin, the C-terminal telopeptide of type I collagen and total procollagen type-1 amino-terminal propeptide; imaging comprised dual x-ray absorptiometry for BMD, T and Z scores of the lumbar spine, femoral neck and total hip, trabecular bone score (TBS), and x-ray scans of the thoracic and lumbar spine. RESULTS Vertebral fractures (VF) in subjects with acromegaly were significantly more frequent than in subjects with hypogonadism, with a prevalence of 29.6% compared to 9.3%. Patients with acromegaly had significantly higher BMD at all skeletal sites but lower TBS than hypogonadal subjects. This difference remained statistically significant after grouping patients with acromegaly according to gonadal status and comparing them with patients with hypogonadism. However, presence of hypogonadism in patients with acromegaly did not influence BMD, TBS or VF prevalence. Moreover, patients with active acromegaly did not have significantly different BMD, TBS and VF prevalence compared to patients with controlled disease. Patients with acromegaly with VF had significantly lower BMD at all skeletal sites than those without VF, but no difference in TBS. CONCLUSIONS Vertebral fractures are frequent in acromegaly, and are associated with lower BMD but not with TBS. Patients with acromegaly, regardless of gonadal status, have significantly higher BMD but lower TBS than hypogonadal patients. Moreover, disease activity and hypogonadism do not influence BMD, TBS or VF in acromegaly.
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Affiliation(s)
- Madalina Cristina Sorohan
- Carol Davila University of Medicine and Pharmacy, Aviatorilor Boulevard, Nr. 34-38, Bucharest, Romania.
| | - Ionela Florina Baciu
- Carol Davila University of Medicine and Pharmacy, Aviatorilor Boulevard, Nr. 34-38, Bucharest, Romania; CI Parhon National Institute of Endocrinology, Bucharest, Romania
| | - Simona Andreea Galoiu
- Carol Davila University of Medicine and Pharmacy, Aviatorilor Boulevard, Nr. 34-38, Bucharest, Romania; CI Parhon National Institute of Endocrinology, Bucharest, Romania
| | - Dan Alexandru Niculescu
- Carol Davila University of Medicine and Pharmacy, Aviatorilor Boulevard, Nr. 34-38, Bucharest, Romania; CI Parhon National Institute of Endocrinology, Bucharest, Romania
| | | | | | - Catalina Poiana
- Carol Davila University of Medicine and Pharmacy, Aviatorilor Boulevard, Nr. 34-38, Bucharest, Romania; CI Parhon National Institute of Endocrinology, Bucharest, Romania
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4
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Wydra A, Stelmachowska-Banaś M, Czajka-Oraniec I. Skeletal complications in acromegaly. Reumatologia 2023; 61:248-255. [PMID: 37745143 PMCID: PMC10515128 DOI: 10.5114/reum/169918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 07/24/2023] [Indexed: 09/26/2023] Open
Abstract
Hypersecretion of growth hormone (GH) is rare and typically results from a pituitary functional tumor - somatotropinoma. It leads to excessive linear bone growth and manifests as gigantism if occurring in childhood and adolescence, before the closure of epiphyses or as a acromegaly in adulthood. The excess of GH impacts bone metabolism directly as well as indirectly through increased insulin-like growth factor 1 (IGF-1). In acromegaly as a consequence of overproduction of GH and IFG-1 and the influence of these hormones on bone osteoblasts, bone metabolism, growth and density increase. However, bone turnover is accelerated causing impaired bone microstructure and strength, which may lead to increased risk of vertebral fractures irrespective of normal bone mineral density. Apart from the changes in bone architecture, acromegaly also results in a degenerative joint disease of a different nature than primary osteoarthritis. Moreover, acromegaly leads to cardiovascular, metabolic and respiratory complications, and thus significantly impairs the quality of life. In this review, authors summarize the pathophysiology, diagnosis, and treatment of bone and joint disease in acromegaly.
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Affiliation(s)
- Arnika Wydra
- Department of Endocrinology, Centre of Postgraduate Medical Education, Bielanski Hospital, Warsaw, Poland
| | - Maria Stelmachowska-Banaś
- Department of Endocrinology, Centre of Postgraduate Medical Education, Bielanski Hospital, Warsaw, Poland
| | - Izabella Czajka-Oraniec
- Department of Endocrinology, Centre of Postgraduate Medical Education, Bielanski Hospital, Warsaw, Poland
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5
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Kuker AP, Agarwal S, Shane E, Cohen A, Nickolas TL, Stein EM, Reid TJ, Hans D, Cremers S, Bruce JN, Freda PU. Persistent Deficits in Bone Quality in Treated Acromegaly: Evidence From Assessments of Microstructure. J Endocr Soc 2023; 7:bvad121. [PMID: 37809053 PMCID: PMC10553518 DOI: 10.1210/jendso/bvad121] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Indexed: 10/07/2023] Open
Abstract
Purpose Fractures are increased in patients with acromegaly, both before and after successful acromegaly treatment. Abnormalities of bone microstructure, which may underlie this fragility, are present in active acromegaly but to what extent these improve with acromegaly treatment or persist despite biochemical remission remains unclear. To examine these questions, we studied the effects of acromegaly treatment and remission on bone quality. Methods Sixty-five women and men with acromegaly were studied. Subgroups underwent assessments of areal bone mineral density by dual x-ray absorptiometry, trabecular bone score (TBS), and volumetric bone mineral density, microarchitecture, stiffness and failure load of the distal radius and tibia by high-resolution peripheral quantitative tomography in a longitudinal study before and after acromegaly treatment and in a cross-sectional study in which patients were compared to sex-, age-, and body mass index-matched healthy controls. Results In the longitudinal study, significant increases in total, cortical, and trabecular densities at the radius and tibia and increased stiffness and failure load of the tibia occurred with acromegaly treatment. In the cross-sectional study, patients in biochemical remission after surgery had larger bones, lower trabecular and cortical volumetric density, and disrupted trabecular microarchitecture compared to controls. TBS did not change with acromegaly treatment but correlated with some microstructural parameters. Conclusion We show, for the first time, that volumetric bone mineral density and microarchitecture of the peripheral skeleton improve with acromegaly treatment but remain abnormal in patients in remission after surgery compared to controls. These abnormalities, known to be associated with fractures in other populations, may play a role in the pathogenesis of persistent fragility in treated acromegaly.
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Affiliation(s)
- Adriana P Kuker
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Sanchita Agarwal
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Elizabeth Shane
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Adi Cohen
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Thomas L Nickolas
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Emily M Stein
- Endocrinology and Metabolic Bone Diseases, Hospital for Special Surgery, New York, NY 10032, USA
| | - Tirissa J Reid
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Didier Hans
- Center for Bone Diseases, Bone and Joint Department, Lausanne University Hospital, Lausanne 1011, Switzerland
| | - Serge Cremers
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
- Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Jeffrey N Bruce
- Neurosurgery, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Pamela U Freda
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
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6
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Ságová I, Mokáň M, Tonhajzerová I, Rončáková M, Vaňuga P. Age, body composition parameters and glycaemic control contribute to trabecular bone score deterioration in acromegaly more than disease activity. Front Endocrinol (Lausanne) 2023; 14:1197725. [PMID: 37670889 PMCID: PMC10475557 DOI: 10.3389/fendo.2023.1197725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/30/2023] [Indexed: 09/07/2023] Open
Abstract
Introduction Impairment of bone structure in patients with acromegaly (AP) varies independently of bone mineral density (BMD). Body composition parameters, which are altered in patients with acromegaly, are important determinants of bone strength. Purpose The aim of this study was to examine BMD and lumbar trabecular bone score (TBS) by dual-energy X-ray absorptiometry (DXA) and to assess its relationship with disease activity, age, glucose metabolism, and body composition parameters. Methods This cross-sectional prospective study involved 115 patients with acromegaly (70 F, 45 M) and 78 healthy controls (CON) (53 F, 25 M) matched for age, gender, and BMI. Bone mineral density, TBS and body composition parameters were measured using DXA. Results AP presented with lower TBS compared to CON (1.2 ± 0.1 v 1.31 ± 0.1, P< 0.001). No significant correlation was observed between IGF-1/GH levels and TBS. Age, glycated haemoglobin, BMI, waist circumference, fat mass, and lean mass negatively correlated with TBS in both sexes. Multiple linear regression analysis of all these parameters revealed age and waist circumference as independent significant predictors of TBS in AP. We did not find difference in BMD (lumbar and femoral sites) between AP and CON nor between active and controlled AP. We observed negative correlation between age and BMD of the femoral neck and total hip (P < 0.001). Testosterone levels in males, BMI, waist circumference, fat mass, and lean mass positively correlated with BMD in AP, with stronger correlation between lean mass and BMD compared to fat mass. Conclusion Patients with acromegaly have lower TBS than controls, confirming impaired bone microarchitecture in acromegaly regardless of BMD. Age, body composition parameters and glucose metabolism contribute to TBS deterioration in AP more than disease activity itself.
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Affiliation(s)
- Ivana Ságová
- Department of Endocrinology, National Institute of Endocrinology and Diabetology, Ľubochňa, Slovakia
- Comenius University Jessenius Faculty of Medicine, 1st Department of Internal Medicine, University Hospital Martin, Martin, Slovakia
| | - Marián Mokáň
- Comenius University Jessenius Faculty of Medicine, 1st Department of Internal Medicine, University Hospital Martin, Martin, Slovakia
| | - Ingrid Tonhajzerová
- Comenius University Jessenius Faculty of Medicine, Department of Physiology, Martin, Slovakia
| | - Marianna Rončáková
- Department of Endocrinology, National Institute of Endocrinology and Diabetology, Ľubochňa, Slovakia
| | - Peter Vaňuga
- Department of Endocrinology, National Institute of Endocrinology and Diabetology, Ľubochňa, Slovakia
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7
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Malczewska-Lenczowska J, Surała O, Sitkowski D, Szczepańska B, Zawadzki M. The effect of body size and composition on lumbar spine trabecular bone score in morphologically diverse subjects. PLoS One 2023; 18:e0287330. [PMID: 37399218 DOI: 10.1371/journal.pone.0287330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/02/2023] [Indexed: 07/05/2023] Open
Abstract
AIM The trabecular bone score (TBS) is a tool for assessing bone quality and health. Current TBS algorithm corrects for body mass index (BMI), as a proxy of regional tissue thickness. However, this approach fails to consider BMI inaccuracies due to individual differences in body stature, composition and somatotype. This study investigated the relationship between TBS and body size and composition in subjects with a normal BMI, but with large morphological diversity in body fatness and height. METHODS Young male subjects (n = 97; age 17.2±1.0 years), including ski jumpers (n = 25), volleyball players (n = 48) and non-athletes (controls n = 39), were recruited. The TBS was determined from L1-L4 dual-energy X-ray absorptiometry (DXA) scans using TBSiNsight software. RESULTS TBS correlated negatively with height and tissue thickness in the L1-L4 area in ski jumpers (r = -0.516 and r = -0.529), volleyball players (r = -0.525 and r = -0.436), and the total group (r = -0.559 and r = -0.463), respectively. Multiple regression analyses revealed that height, L1-L4 soft tissue thickness, fat mass and muscle mass were significant determinants of TBS (R2 = 0.587, p<0.001). L1-L4 soft tissue thickness explained 27% and height 14% of the TBS variance. CONCLUSION The negative association of TBS and both features suggests that a very low L1-L4 tissue thickness may lead to overestimation of the TBS, while tall stature may have the opposite effect. It seems that the utility of the TBS as a skeletal assessment tool in lean and/or tall young male subjects could be improved if tissues thickness in the lumbar spine area and stature instead of BMI were considered in the algorithm.
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Affiliation(s)
| | - Olga Surała
- Department of Nutrition Physiology and Dietetics, Institute of Sport-National Research Institute, Warsaw, Poland
| | - Dariusz Sitkowski
- Department of Physiology, Institute of Sport-National Research Institute, Warsaw, Poland
| | - Beata Szczepańska
- Department of Nutrition Physiology and Dietetics, Institute of Sport-National Research Institute, Warsaw, Poland
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Slagboom TNA, van Bunderen CC, De Vries R, Bisschop PH, Drent ML. Prevalence of clinical signs, symptoms and comorbidities at diagnosis of acromegaly: a systematic review in accordance with PRISMA guidelines. Pituitary 2023:10.1007/s11102-023-01322-7. [PMID: 37210433 PMCID: PMC10397145 DOI: 10.1007/s11102-023-01322-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/26/2023] [Indexed: 05/22/2023]
Abstract
OBJECTIVE Diagnostic delay is high in acromegaly and leads to increased morbidity and mortality. The aim of this study is to systematically assess the most prevalent clinical signs, symptoms and comorbidities of acromegaly at time of diagnosis. DESIGN A literature search (in PubMed, Embase and Web of Science) was performed on November 18, 2021, in collaboration with a medical information specialist. METHODS Prevalence data on (presenting) clinical signs, symptoms and comorbidities at time of diagnosis were extracted and synthesized as weighted mean prevalence. The risk of bias was assessed for each included study using the Joanna Briggs Institute Critical Appraisal Checklist for Studies Reporting Prevalence Data. RESULTS Risk of bias and heterogeneity was high in the 124 included articles. Clinical signs and symptoms with the highest weighted mean prevalence were: acral enlargement (90%), facial features (65%), oral changes (62%), headache (59%), fatigue/tiredness (53%; including daytime sleepiness: 48%), hyperhidrosis (47%), snoring (46%), skin changes (including oily skin: 37% and thicker skin: 35%), weight gain (36%) and arthralgia (34%). Concerning comorbidities, acromegaly patients more frequently had hypertension, left ventricle hypertrophy, dia/systolic dysfunction, cardiac arrhythmias, (pre)diabetes, dyslipidemia and intestinal polyps- and malignancy than age- and sex matched controls. Noteworthy, cardiovascular comorbidity was lower in more recent studies. Features that most often led to diagnosis of acromegaly were typical physical changes (acral enlargement, facial changes and prognatism), local tumor effects (headache and visual defect), diabetes, thyroid cancer and menstrual disorders. CONCLUSION Acromegaly manifests itself with typical physical changes but also leads to a wide variety of common comorbidities, emphasizing that recognition of a combination of these features is key to establishing the diagnosis.
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Affiliation(s)
- Tessa N A Slagboom
- Department of Endocrinology and Metabolism, Amsterdam UMC Location Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands.
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands.
| | - Christa C van Bunderen
- Department of Endocrinology and Metabolism, Amsterdam UMC Location Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
- Division of Endocrinology, Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ralph De Vries
- Medical Library, Vrije Universiteit, Amsterdam, The Netherlands
| | - Peter H Bisschop
- Department of Endocrinology and Metabolism, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Madeleine L Drent
- Department of Endocrinology and Metabolism, Amsterdam UMC Location Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
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Sorohan MC, Poiana C. Vertebral Fractures in Acromegaly: A Systematic Review. J Clin Med 2022; 12:jcm12010164. [PMID: 36614962 PMCID: PMC9821150 DOI: 10.3390/jcm12010164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION Acromegaly is characterized by a very particular alteration of bone microarchitecture, leading to increased vertebral fragility. However, due to inconsistent and insufficient evidence, no guidelines are available for the evaluation of this osteopathy. METHODS We performed a literature review of studies published between 1968 and January 2022 on the PubMed and SCOPUS databases using the terms "acromegaly" and "vertebral fractures". Twenty-four studies were found eligible for inclusion, published between June 2005 and November 2021. Included studies evaluated acromegaly patients, who were assessed for the presence of vertebral fractures. We excluded case reports, reviews, meta-analyses, letters to the editor, articles not written in English, and research performed on the same set of patients without significant differences in study design. Risk of bias was avoided by following the ROBIS risk of bias recommendations. We executed rigorous data collection, and the results are depicted as a narrative overview, but also, as statistical synthesis. Limitations of the evidence presented in the study include study heterogeneity, small sample sizes, and a small number of prospective studies with short follow-up. FINDINGS Data regarding vertebral fractures (VFs) in acromegaly and their influencing factors are variable. Twenty-four studies were included, nine out of which had a prospective design. The smallest group of acromegaly patients had 18 subjects and the largest included 248 patients. Prevalence ranges between 6.5% and 87.1%, although most studies agree that it is significantly higher than in controls. VFs also have a higher incidence (between 5.6% and 42%) and are more frequently multiple (between 46.15% and 71%). Evidence shows that disease activity and active disease duration are influencing factors for the prevalence and incidence of VFs. Nonetheless, hypogonadism does not seem to influence the frequency of VFs. While reports are conflicting regarding the use of bone mineral density in acromegaly, evidence seems to be slightly in favor of it not being associated with VFs. However, trabecular bone score is significantly lower in fractured patients, although no prospective studies are available. INTERPRETATION Vertebral fractures evaluation should be performed with regularity in all acromegalic patients, especially in the presence of active disease. Disease activity is an important determinant of vertebral fracture incidence and prevalence, although hypogonadism is less so. To clarify the predictive value of both BMD and TBS for vertebral fractures, additional, larger, prospective studies are necessary.
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Affiliation(s)
- Madalina Cristina Sorohan
- CI Parhon National Institute of Endocrinology, 011863 Bucharest, Romania
- Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Correspondence:
| | - Catalina Poiana
- CI Parhon National Institute of Endocrinology, 011863 Bucharest, Romania
- Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
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10
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Ribeiro de Moura C, Campos Lopes S, Monteiro AM. Determinants of skeletal fragility in acromegaly: a systematic review and meta-analysis. Pituitary 2022; 25:780-794. [PMID: 35867180 DOI: 10.1007/s11102-022-01256-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/08/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Vertebral fractures (VFs) are a potential complication in acromegaly. However, the etiology of this skeletal fragility is unknown. This review aimed to evaluate the effect of acromegaly on VFs, bone turnover, areal bone mineral density (aBMD), and bone quality/microarchitecture. The effect of disease activity and gonadal status in these determinants of skeletal fragility was also evaluated. METHODS Articles published in English until September 6, 2020 on PubMed and Embase that reported at least one determinant of skeletal fragility in acromegalic patients, were included. Odds ratio (OR) to evaluate the risk of VFs and the standardized mean difference (SMD) to evaluate bone turnover, aBMD and bone quality/microarchitecture were calculated. RESULTS Fifty-eight studies met eligibility criteria, assembling a total of 2412 acromegalic patients. Of these, 49 studies were included in the meta-analysis. Acromegalic patients, when compared to non-acromegalic patients, had higher risk of VFs [OR 7.00; 95% confidence interval (CI) 2.80-17.52; p < 0.0001], higher bone formation (SMD 1.14; 95% CI 0.69-1.59; p < 0.00001), higher bone resorption (SMD 0.60; 95% CI 0.09-1.10; p = 0.02) and higher aBMD at the femoral neck (SMD 0.36; 95% CI 0.15-0.57; p = 0.0009). No significant differences were found regarding aBMD at lumbar spine. Considering the results of the different techniques evaluating bone quality/microarchitecture, the main reported alterations were a decrease in trabecular bone thickness and density, and an increase in trabecular separation. The presence of active disease and/or hypogonadism were associated with worst results. CONCLUSION Patients with acromegaly are at increased risk of VFs, mainly because of deterioration in bone microarchitecture.
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11
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Palomo T, Muszkat P, Weiler FG, Dreyer P, Brandão CMA, Silva BC. Update on trabecular bone score. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2022; 66:694-706. [PMID: 36382759 PMCID: PMC10118821 DOI: 10.20945/2359-3997000000559] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Trabecular bone score (TBS) is an indirect and noninvasive measure of bone quality. A low TBS indicates degraded bone microarchitecture, predicts osteoporotic fracture, and is partially independent of clinical risk factors and bone mineral density (BMD). There is substantial evidence supporting the use of TBS to assess vertebral, hip, and major osteoporotic fracture risk in postmenopausal women, as well as to assess hip and major osteoporotic fracture risk in men aged > 50 years. TBS complements BMD information and can be used to adjust the FRAX (Fracture Risk Assessment) score to improve risk stratification. While TBS should not be used to monitor antiresorptive therapy, it may be potentially useful for monitoring anabolic therapy. There is also a growing body of evidence indicating that TBS is particularly useful as an adjunct to BMD for fracture risk assessment in conditions associated with increased fracture risk, such as type-2 diabetes, chronic corticosteroid excess, and other conditions wherein BMD readings are often misleading. The interference of abdominal soft tissue thickness (STT) on TBS should also be considered when interpreting these findings because image noise can impact TBS evaluation. A new TBS software version based on an algorithm that accounts for STT rather than BMI seems to correct this technical limitation and is under development. In this paper, we review the current state of TBS, its technical aspects, and its evolving role in the assessment and management of several clinical conditions.
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12
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Trabecular Bone Score as a Reliable Measure of Lumbar Spine Bone Microarchitecture in Acromegalic Patients. J Clin Med 2022; 11:jcm11216374. [PMID: 36362602 PMCID: PMC9656167 DOI: 10.3390/jcm11216374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/19/2022] [Accepted: 10/25/2022] [Indexed: 11/17/2022] Open
Abstract
Although GH and IGF-1 excess has a controversial impact on bone mineral density (BMD), acromegalic patients display variable degrees of bone structure impairment. In this study, we aim to investigate the usefulness of trabecular bone score (TBS), compared to BMD, in identifying acromegalic patients with impaired lumbar spine trabecular microarchitecture. Forty-four acromegalic patients were investigated for disease control, metabolic and gonadal status, bone metabolism parameters, and the presence of vertebral fractures (VFs). Patients and matched healthy controls underwent BMD and TBS examination. Mean TBS values were lower in patients than in controls (p < 0.001), without significant differences in mean lumbar and femoral BMD. TBS values were significantly higher in controlled patients compared to the uncontrolled ones (p = 0.012). No significant differences were found in bone markers with respect to disease control. Mean TBS or lumbar BMD did not significantly differ in patients with or without VFs (prevalence 11.4%). TBS and BMD levels were lower in hypogonadal patients compared to the eugonadal ones (p = 0.030 and p < 0.001, respectively). In conclusion, TBS values are significantly lower in patients than in controls, confirming the presence of impaired lumbar spine trabecular bone in acromegaly. Both uncontrolled disease and hypogonadism contribute to TBS deterioration in acromegaly.
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Saha S, Mannar V, Kandasamy D, Sreenivas V, Goswami R. Vertebral fractures, trabecular bone score and their determinants in chronic hypoparathyroidism. J Endocrinol Invest 2022; 45:1777-1786. [PMID: 35585296 DOI: 10.1007/s40618-022-01818-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 05/03/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Patients with hypoparathyroidism are at risk of vertebral fractures (VFs) despite high bone mineral density (BMD). We investigated this paradox by assessing trabecular bone score (TBS) and hip structural analysis (HSA) in non-surgical chronic hypoparathyroidism (cHypoPT) with and without VFs. METHODS 152 cHypoPT patients (age 40.2 ± 13.4 years, M: F = 81:71) with a median follow-up of 8 (2-13) years were assessed for BMD, VFs, TBS, and HSA and compared with 152 healthy controls. VFs at T7-L4 were assessed by Genant's method. Average serum total calcium and phosphorus during follow-up were assessed. RESULTS The lumbar spine and hip BMD were higher by 25.4 and 13.4% in cHypoPT than controls (P < 0.001). Paradoxically, VFs (30.9 vs.7.9%), including multiple (12.5 vs. 2.6%) were higher in cHypoPT (P < 0.001). Though overall average TBS (1.411 ± 0.091) was normal in cHypoPT, 25.4% of the females had subnormal TBS, more in post than pre-menopausal women (52.3 vs. 14%, P = 0.002) and as compared to males (6.1%, P = 0.001). TBS correlated with menopausal status and follow-up serum calcium-phosphorus product. For every gm/cm2 rise in BMD, TBS increase was only 0.227 in cHypoPT compared to 0.513 in controls. Frequency of VFs increased with declining TBS (P = 0.004). HSA was comparable between cHypoPT with and without VFs. 23.4% of cHypoPT with VFs had subnormal TBS. CONCLUSION 31% of cHypoPT patients had VFs. TBS indicated degraded bone microarchitecture in 50% of the post-menopausal cHypoPT women. However, TBS has limitations to detect abnormal bone microarchitecture in cHypoPT as only one-fourth of patients with VFs showed low TBS.
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Affiliation(s)
- S Saha
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - V Mannar
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - D Kandasamy
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - V Sreenivas
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - R Goswami
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, 110029, India.
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14
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Claessen KMJA, Pelsma ICM, Kroon HM, van Lierop AH, Pereira AM, Biermasz NR, Appelman-Dijkstra NM. Low sclerostin levels after long-term remission of acromegaly. Endocrine 2022; 75:228-238. [PMID: 34448099 PMCID: PMC8763730 DOI: 10.1007/s12020-021-02850-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/11/2021] [Indexed: 10/30/2022]
Abstract
PURPOSE Bone health is compromised in acromegaly resulting in vertebral fractures (VFs), regardless of biochemical remission. Sclerostin is a negative inhibitor of bone formation and is associated with increased fracture risk in the general population. Therefore, we compared sclerostin concentrations between well-controlled acromegaly patients and healthy controls, and assessed its relationship with bone mineral density (BMD), and VFs in acromegaly. METHODS Seventy-nine patients (mean age 58.9 ± 11.4 years, 49% women) with controlled acromegaly, and 91 healthy controls (mean age 51.1 ± 16.9 years, 59% women) were included. Plasma sclerostin levels (pg/mL) in patients were measured with an ELISA assay, whereas in controls, serum levels were converted to plasma levels by multiplication with 3.6. In patients, VFs were radiographically assessed, and BMD was assessed using dual X-ray absorptiometry. RESULTS Median sclerostin concentration in controlled acromegaly patients was significantly lower than in healthy controls (104.5 pg/mL (range 45.7-234.7 pg/mL) vs 140.0 pg/mL (range 44.8-401.6 pg/mL), p < 0.001). Plasma sclerostin levels were not related to age, current growth hormone (GH) or insulin-like factor-1 (IGF-1) levels, gonadal state, treatment modality, remission duration, or BMD, VF presence, severity or progression. CONCLUSION Patients with long-term controlled acromegaly have lower plasma sclerostin levels than healthy controls, as a reflection of decreased osteocyte activity. Further longitudinal studies are needed to establish the course of sclerostin during different phases of disease and its exact effects in acromegalic osteopathy.
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Affiliation(s)
- Kim M J A Claessen
- Department of Medicine, Division of Endocrinology, and Center for Endocrine Tumors Leiden, Leiden, The Netherlands.
- Department of Medicine, Division of Endocrinology, and Center for Bone Quality, Leiden, The Netherlands.
| | - Iris C M Pelsma
- Department of Medicine, Division of Endocrinology, and Center for Endocrine Tumors Leiden, Leiden, The Netherlands
| | - Herman M Kroon
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Antoon H van Lierop
- Department of Medicine, Division of Endocrinology, and Center for Bone Quality, Leiden, The Netherlands
| | - Alberto M Pereira
- Department of Medicine, Division of Endocrinology, and Center for Endocrine Tumors Leiden, Leiden, The Netherlands
| | - Nienke R Biermasz
- Department of Medicine, Division of Endocrinology, and Center for Endocrine Tumors Leiden, Leiden, The Netherlands
| | - Natasha M Appelman-Dijkstra
- Department of Medicine, Division of Endocrinology, and Center for Endocrine Tumors Leiden, Leiden, The Netherlands
- Department of Medicine, Division of Endocrinology, and Center for Bone Quality, Leiden, The Netherlands
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15
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Jawiarczyk-Przybyłowska A, Halupczok-Żyła J, Syrycka J, Zembska A, Kuliczkowska-Płaksej J, Bolanowski M. Trabecular Bone Score and Osteoprotegerin as Useful Tools in the Assessment of Bone Deterioration in Acromegaly. Front Endocrinol (Lausanne) 2022; 13:862845. [PMID: 35528019 PMCID: PMC9068997 DOI: 10.3389/fendo.2022.862845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/21/2022] [Indexed: 12/11/2022] Open
Abstract
PURPOSE This study aimed to assess bone mineral density (BMD) and trabecular bone score (TBS) in 61 patients from the acromegaly group (AG) with regard to the activity of the disease in comparison to 42 patients-control group (CG). We also analyzed selected bone markers and their association with BMD and TBS. MATERIALS AND METHODS Lumbar spine and femoral neck BMD measurements were performed. TBS values were obtained. Serum concentrations of selected bone markers, including osteoprotegerin (OPG), were measured. RESULTS We revealed a difference in TBS values between the AG and CG as well as between the TCA (treatment-controlled acromegaly) vs. CG and TCA+CA (cured acromegaly) vs. CG. We did not observe any statistically significant difference in BMD. OPG had a lower concentration in the CG compared to the AG. TBS correlated negatively with OPG in the AG (r = -0.31, p = 0.01) and in the TCA+ CA group (r = -0.3, p = 0.01). CONCLUSIONS The acromegalic patients have altered bone microstructure as indicated by the decreased TBS regardless of the activity of the disease and BMD. OPG could be a marker of the destruction of the bone microstructure, but further studies are needed.
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Kužma M, Vaňuga P, Ságová I, Pávai D, Jackuliak P, Killinger Z, Binkley N, Winzenrieth R, Payer J. Vertebral Fractures Occur Despite Control of Acromegaly and Are Predicted by Cortical Volumetric Bone Mineral Density. J Clin Endocrinol Metab 2021; 106:e5088-e5096. [PMID: 34270719 DOI: 10.1210/clinem/dgab259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Recent studies suggest that cortical bone could also play a role in vertebral fracture (VF) development in acromegaly. OBJECTIVE Evaluate the occurrence of VFs and their relationship to dual energy x-ray absorptiometry-derived bone parameters. METHODS A single-center 2-year prospective study of acromegaly patients was conducted. Each subject had L1-4 spine, femoral neck and total hip (TH) areal BMD measured using DXA, and trabecular bone score (TBS) measurement performed. 3D Shaper™ was used to assess proximal femur trabecular and cortical volumetric (v)BMD, cortical surface (s)BMD, and cortical thickness (Cth). VF assessment was performed using the lateral spine imaging IVA™ mode with a Hologic Horizon® densitometer using a semiquantitative approach. Study outcomes were assessed at 2 time points: baseline and month 24. RESULTS 70 acromegaly patients (34 M/36F; average 55.1 years) were studied, including 26 with active disease. In 13 patients, 9 with controlled disease, VF was observed. A decrease in TBS, sBMD, neck trabecular vBMD, TH, and neck cortical vBMD in VF compared with non-VF subjects was observed (P < .05). Multivariate analysis of fracture prediction showed TH cortical vBMD as the best fracture prediction parameter with area under the curve of 0.774. TBS was negatively associated with fasting plasma glucose and glycated hemoglobin (HBA1c) at each time point during the follow-up. CONCLUSION From the total number of 13 VF subjects, 9 were in the controlled disease group. The most sensitive and specific predictor of incident VF was TH cortical vBMD, suggesting that cortical bone is involved in fracture development.
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Affiliation(s)
- Martin Kužma
- Comenius University Faculty of Medicine, 5th department of Internal Medicine, University Hospital Bratislava, Slovakia
| | - Peter Vaňuga
- National institute of Endocrinology and Diabetology, Lubochna, Slovakia
| | - Ivana Ságová
- National institute of Endocrinology and Diabetology, Lubochna, Slovakia
| | - Dušan Pávai
- National institute of Endocrinology and Diabetology, Lubochna, Slovakia
| | - Peter Jackuliak
- Comenius University Faculty of Medicine, 5th department of Internal Medicine, University Hospital Bratislava, Slovakia
| | - Zdenko Killinger
- Comenius University Faculty of Medicine, 5th department of Internal Medicine, University Hospital Bratislava, Slovakia
| | - Neil Binkley
- Department of Medicine, University of Wisconsin, Madison, WI 53706, USA
| | | | - Juraj Payer
- Comenius University Faculty of Medicine, 5th department of Internal Medicine, University Hospital Bratislava, Slovakia
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17
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Sorohan MC, Dusceac R, Sorohan BM, Caragheorgheopol A, Poiana C. Trabecular bone score and bone mineral density in acromegalic osteopathy assessment: a cross-sectional study. Arch Osteoporos 2021; 16:134. [PMID: 34529148 DOI: 10.1007/s11657-021-00986-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 08/23/2021] [Indexed: 02/03/2023]
Abstract
PURPOSE The evaluation of acromegalic osteopathy is a subject of current interest as there is a lack of evidence concerning proper evaluation techniques and clear diagnostic criteria. The aim of this study was to evaluate lumbar spine trabecular bone score (TBS) and bone mineral density (BMD) in acromegaly patients compared to healthy controls. METHODS We conducted a cross-sectional study on 43 acromegaly patients recruited between 2018 and 2020 and a healthy control group matched 1:1 for age, gender, and body mass index (BMI). All subjects underwent DXA, lumbar spine TBS, and bone turnover markers measurement. RESULTS Acromegaly patients showed significantly decreased lumbar spine TBS (1.244 ± 0.117 vs. 1.343 ± 0.124, p < 0.001) and no difference regarding BMD compared to control patients. In the subgroup analysis, TBS was significantly lower in both males and females (1.282 ± 0.075 vs. 1.366 ± 0.113, p = 0.01 and 1.222 ± 0.132 vs. 1.329 ± 0.130, p = 0.005) and, also, in hypogonadal and eugonadal acromegaly subjects compared to their healthy controls (1.231 ± 0.130 vs. 1.306 ± 0.125, p = 0.04 and 1.280 ± 0.065 vs. 1.381 ± 0.113, p = 0.008). Femoral neck BMD was higher in acromegalic hypogonadal patients [1.027 (IQR: 0.939-1.135) vs. 0.876 (IQR: 0.737-1.014), p = 0.004]. CONCLUSION Our study indicates that TBS, but not BMD, is significantly decreased in acromegaly patients, regardless of gender and gonadal status. This data suggests that TBS could be a valuable tool in the assessment of acromegalic osteopathy.
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Affiliation(s)
- Madalina Cristina Sorohan
- CI Parhon National Institute of Endocrinology, Bucharest, Romania. .,Carol Davila University of Medicine and Pharmacy, Bucharest, Romania.
| | - Roxana Dusceac
- CI Parhon National Institute of Endocrinology, Bucharest, Romania.,Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | | | | | - Catalina Poiana
- CI Parhon National Institute of Endocrinology, Bucharest, Romania.,Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
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Calatayud M, Pérez-Olivares Martín L, Librizzi MS, Lora Pablos D, González Méndez V, Aramendi Ramos M, Martínez Diaz-Guerra G, Hawkins F. Trabecular bone score and bone mineral density in patients with long-term controlled acromegaly. Clin Endocrinol (Oxf) 2021; 95:58-64. [PMID: 33559169 DOI: 10.1111/cen.14439] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Acromegaly is associated with increased vertebral fracture (VFs) risk not correlated to bone mineral density (BMD). Trabecular bone score (TBS), related to bone microarchitecture, provides information on bone strength. This cross-sectional study considered the usefulness of TBS and BMD to assess bone status in long-term controlled acromegalic patients. DESIGN, PATIENTS, MEASUREMENTS 26 acromegaly patients (14 female and 12 males) were included in the study. A further 117 subjects were recruited as controls (58 females and 57 males). BMD was measured using dual-energy X-ray absorptiometry (DXA), TBS was obtained applying Medimaps software 2.0. Biochemical parameters were determined by standardized techniques. RESULTS 73% of patients with acromegaly exhibited normal lumbar spine (LS) BMD. TBS was normal in 38% of acromegalic patients and partially degraded or degraded in 31% of patients, respectively. No differences were found in LS BMD between acromegalic patients and controls. TBS values were significantly lower in patients with acromegaly (1.27 ± 0.13 vs. 1.35 ± 0.17, p = .01). Postsurgical remission was associated with higher TBS values (1.35 ± 0.10 vs. 1.23 ± 0.13, p = .02) and pituitary radiotherapy treatment with lower TBS values (1.18 ± 0.12 vs. 1.31 ± 0.12, p = .004). On multivariate analysis, age, BMI and LS BMD were predictors of TBS changes in patients with acromegaly (p < .05). CONCLUSIONS Patients with long-term controlled acromegaly can exhibit deterioration of bone microstructure measured with TBS, despite BMD measurement not showing bone loss. Our study suggests that TBS is useful for monitoring the bone status changes in acromegalic patients.
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Affiliation(s)
- María Calatayud
- Endocrinology Service, University Hospital 12 Octubre, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Laura Pérez-Olivares Martín
- Endocrinology Service, University Hospital 12 Octubre, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - María Soledad Librizzi
- Endocrinology Service, University Hospital 12 Octubre, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - David Lora Pablos
- Epidemiology Unit, University Hospital 12 Octubre, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Violeta González Méndez
- Radiology Service, University Hospital 12 Octubre, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Mercedes Aramendi Ramos
- Biochemical Service, University Hospital 12 Octubre, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Guillermo Martínez Diaz-Guerra
- Endocrinology Service, University Hospital 12 Octubre, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Federico Hawkins
- Research Institute i+12, University Hospital 12 Octubre, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
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Kong SH, Hong N, Kim JW, Kim DY, Kim JH. Application of the Trabecular Bone Score in Clinical Practice. J Bone Metab 2021; 28:101-113. [PMID: 34130362 PMCID: PMC8206609 DOI: 10.11005/jbm.2021.28.2.101] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 03/18/2021] [Indexed: 01/28/2023] Open
Abstract
The trabecular bone score (TBS) was introduced as an indirect index of trabecular microarchitecture, complementary to bone mineral density (BMD), and is derived using the same dual energy X-ray absorptiometry images. Recently, it has been approved for clinical use in Korea. Therefore, we conducted a comprehensive review to optimize the use of TBS in clinical practice. The TBS is an independent predictor of osteoporotic fractures in postmenopausal women and men aged >50 years. The TBS is potentially useful in monitoring the skeletal effects of anabolic agents but not of antiresorptive agents. In postmenopausal women with type 2 diabetes mellitus, the TBS assesses osteoporotic fracture risk not captured by BMD. However, high body mass index and soft tissue thickness can cause underestimation of the TBS; however, this limitation has been improved in recent versions of the TBS software. However, a high precision error and low reproducibility limit the use of TBS. This review may provide information on the application of the TBS in clinical practice based on reliable evidence.
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Affiliation(s)
- Sung Hye Kong
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Namki Hong
- Division of Endocrinology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jin-Woo Kim
- Department of Orthopedic Surgery, Nowon Eulji Medical Center, Eulji University, Seoul, Korea
| | - Deog Yoon Kim
- Department of Nuclear Medicine, Kyung Hee University School of Medicine, Seoul, Korea
| | - Jung Hee Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
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20
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Sala E, Malchiodi E, Carosi G, Verrua E, Cairoli E, Ferrante E, Filopanti M, Eller-Vainicher C, Ulivieri FM, Spada A, Arosio M, Chiodini I, Mantovani G. Spine Bone Texture Assessed by Trabecular Bone Score in Active and Controlled Acromegaly: A Prospective Study. J Endocr Soc 2021; 5:bvab090. [PMID: 34195527 PMCID: PMC8237850 DOI: 10.1210/jendso/bvab090] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Indexed: 11/19/2022] Open
Abstract
Context Acromegalic patients have an increased vertebral fracture (VFx) risk due to bone quality reduction, independently of bone mineral density (BMD). Objective The aim of the study is to describe bone quality in acromegaly, measured by trabecular bone score (TBS), a noninvasive index for assessing bone microarchitecture. Methods We collected data from 18 patients (13 female, age 56.2 ± 15 years) newly diagnosed with acromegaly. Thirty-six age- and sex-matched healthy controls were also recruited. Pituitary function, bone and calcium-phosphorous metabolism, and BMD at spine and femur and TBS (by dual-energy x-ray absorptiometry) were assessed in acromegalic patients at diagnosis and 12 months after the achievement of insulin-like growth factor 1 (IGF-1) normalization. Results At diagnosis, BMD and the VFx prevalence were comparable between patients and controls (28.3 ± 5.9 vs 27.6 ± 3.7 and 11% vs 8.3%), whereas TBS was significantly lower in acromegalic patients (1.20 ± 0.13 vs 1.30 ± 0.06; P < .001) and carboxyterminal telopeptide (CTX) and osteocalcin were significantly higher compared to controls (707 ± 365.7 vs 371 ± 104.1 pg/mL; P = .001 and 31.6 ± 15.4 vs 17.0 ± 5.7 ng/mL; P = .001, respectively). One year after IGF-1 normalization, a significant reduction of bone turnover indexes was observed in the group of acromegalic patients surgically cured (osteocalcin decrease of 61.2%, CTX decrease of 60.3%) compared to the ones controlled by medical therapy (osteocalcin decrease of 39%, CTX decrease of 40.7%; P = .01 and P = .001, respectively). Despite these findings, no TBS or BMD variations were observed. Conclusion Acromegalic patients have impaired bone quality despite normal density. Achieving normal growth hormone secretion rapidly leads to the normalization of bone turnover.
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Affiliation(s)
- E Sala
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - E Malchiodi
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
| | - G Carosi
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.,Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy
| | - E Verrua
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - E Cairoli
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
| | - E Ferrante
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - M Filopanti
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
| | - C Eller-Vainicher
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - F M Ulivieri
- Nuclear Medicine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - A Spada
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
| | - M Arosio
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
| | - I Chiodini
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy.,Istituto Auxologico Italiano, IRCCS, Unit for Bone Metabolism Diseases and Diabetes & Lab of Endocrine and Metabolic Research, 20149 Milan, Italy
| | - G Mantovani
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
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21
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Chung CW, Choi HS, Kong SH, Park YJ, Park DJ, Ahn HY, Cho SW. Measurements of Bone Health after Thyroid-Stimulating Suppression Therapy in Postmenopausal Women with Differentiated Thyroid Carcinoma: Bone Mineral Density versus the Trabecular Bone Score. J Clin Med 2021; 10:jcm10091964. [PMID: 34063726 PMCID: PMC8125563 DOI: 10.3390/jcm10091964] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 04/27/2021] [Accepted: 05/01/2021] [Indexed: 12/30/2022] Open
Abstract
Background: Thyroid-stimulating hormone (TSH) suppression therapy is an important treatment modality for differentiated thyroid carcinoma (DTC), but it increases fracture risk. The aim of this study was to evaluate changes in bone mineral density (BMD) and trabecular bone score (TBS) in postmenopausal DTC patients receiving TSH suppression therapy. Methods: A total of 410 postmenopausal DTC patients who underwent thyroidectomy and had at least two dual-energy X-ray absorptiometry measurements, including a preoperative measurement, were included. Patients who had osteoporosis medication for more than 1 year were classified as ‘patients with osteoporosis’. Results: In patients without osteoporosis, the change in %BMD was similar between TSH suppression (−) and (+) groups, while the decrease in %TBS was significantly greater in the TSH suppression (+) group than that of the TSH suppression (−) group. The relative risk of vertebral fracture was decreased by TBS changes but not by BMD changes. In patients with osteoporosis, both BMD and TBS showed significant increases in the TSH suppression (−) group but not in TSH suppression (+) group. At year 4, TBS was significantly lower in the TSH suppression (+) group than that in the TSH suppression (−) group, while BMD showed no difference between groups. Conclusions: TBS may better reflect bone health than BMD in postmenopausal DTC patients with TSH suppression therapy.
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Affiliation(s)
- Chae Won Chung
- Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Korea; (C.W.C.); (Y.J.P.); (D.J.P.)
| | - Hoon Sung Choi
- Department of Internal Medicine, Kangwon National University Hospital, Chuncheon-si 24289, Korea;
| | - Sung Hye Kong
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Korea;
- Department of Internal Medicine, Seoul National University Bundang Hospital, Kyonggi 13620, Korea
| | - Young Joo Park
- Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Korea; (C.W.C.); (Y.J.P.); (D.J.P.)
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Korea;
| | - Do Joon Park
- Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Korea; (C.W.C.); (Y.J.P.); (D.J.P.)
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Korea;
| | - Hwa Young Ahn
- Department of Internal Medicine, Chung-Ang University Hospital, Seoul 06973, Korea;
| | - Sun Wook Cho
- Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Korea; (C.W.C.); (Y.J.P.); (D.J.P.)
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Korea;
- Correspondence: ; Tel.: +82-2-2072-4761
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Rolla M, Jawiarczyk-Przybyłowska A, Halupczok-Żyła J, Kałużny M, Konopka BM, Błoniecka I, Zieliński G, Bolanowski M. Complications and Comorbidities of Acromegaly-Retrospective Study in Polish Center. Front Endocrinol (Lausanne) 2021; 12:642131. [PMID: 33796075 PMCID: PMC8009182 DOI: 10.3389/fendo.2021.642131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/16/2021] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION In acromegaly, chronic exposure to impaired GH and IGF-I levels leads to the development of typical acromegaly symptoms, and multiple systemic complications as cardiovascular, metabolic, respiratory, endocrine, and bone disorders. Acromegaly comorbidities contribute to decreased life quality and premature mortality. The aim of our study was to assess the frequency of acromegaly complications and to evaluate diagnostic methods performed toward recognition of them. MATERIALS AND METHODS It was a retrospective study and we analyzed data of 179 patients hospitalized in the Department of Endocrinology, Diabetes and Isotope Therapy in Wroclaw Medical University (Poland) in 1976 to 2018 to create a database for statistical analysis. RESULTS The study group comprised of 119 women (66%) and 60 men (34%). The median age of acromegaly diagnosis was 50.5 years old for women (age range 20-78) and 46 for men (range 24-76). Metabolic disorders (hyperlipidemia, diabetes, and prediabetes) were the most frequently diagnosed complications in our study, followed by cardiovascular diseases and endocrine disorders (goiter, pituitary insufficiency, osteoporosis). BP measurement, ECG, lipid profile, fasting glucose or OGTT were performed the most often, while colonoscopy and echocardiogram were the least frequent. CONCLUSIONS In our population we observed female predominance. We revealed a decrease in the number of patients with active acromegaly and an increase in the number of well-controlled patients. More than 50% of patients demonstrated a coexistence of cardiac, metabolic and endocrine disturbances and only 5% of patients did not suffer from any disease from those main groups.
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Affiliation(s)
- Małgorzata Rolla
- Department of Endocrinology, Diabetes and Isotope Therapy, Wroclaw Medical University, Wrocław, Poland
- *Correspondence: Małgorzata Rolla,
| | | | - Jowita Halupczok-Żyła
- Department of Endocrinology, Diabetes and Isotope Therapy, Wroclaw Medical University, Wrocław, Poland
| | - Marcin Kałużny
- Department of Endocrinology, Diabetes and Isotope Therapy, Wroclaw Medical University, Wrocław, Poland
| | - Bogumil M. Konopka
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Izabela Błoniecka
- Department of Endocrinology, Diabetes and Isotope Therapy, University Clinical Hospital, Wrocław, Poland
| | - Grzegorz Zieliński
- Department of Neurosurgery, Military Institute of Medicine, Warsaw, Poland
| | - Marek Bolanowski
- Department of Endocrinology, Diabetes and Isotope Therapy, Wroclaw Medical University, Wrocław, Poland
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Kužma M, Killinger Z, Jackuliak P, Vaňuga P, Hans D, Binkley N, Payer J. Pathophysiology of growth hormone secretion disorders and their impact on bone microstructure as measured by trabecular bone score. Physiol Res 2020; 68:S121-S129. [PMID: 31842575 DOI: 10.33549/physiolres.934303] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
This article is focused on endocrine-mediated osteoporosis caused by growth hormone (GH) disorders; adult GH deficiency and acromegaly. GH and insulin like growth factor-1 (IGF-1) stimulate linear bone growth through complex hormonal interactions and activates epiphyseal prechondrocytes. GH, via receptor activator of nuclear factor-kappaB (RANK), its ligand (RANK-L), and the osteoprotegerin system, stimulates production of osteoprotegerin and its accumulation in bone matrix. Malfunction of this mechanism, could lead to specific bone impairment. However, the primary problem of bone disease in GH secretion disorders is the primary prevention of osteoporotic fractures, so it is important to determine bone quality that better reflects the patient's actual predisposition to fracture. A method estimating bone quality from lumbar spine dual X-ray absorptiometry (DXA) scans is trabecular bone score (TBS). TBS in addition to bone mineral density (BMD) is a promising predictor of the osteoporotic fracture risk in women with postmenopausal osteopenia. In acromegaly TBS better defines risk of fracture because BMD is normal or even increased. TBS helps to monitor the effect of growth hormone therapy. Despite these findings, TBS should not be used alone, but a comprehensive consideration of all fracture risk factors, BMD and bone turnover markers is necessary.
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Affiliation(s)
- M Kužma
- 5th Department of Internal Medicine, Faculty of Medicine, Comenius University Bratislava, University Hospital Bratislava, Bratislava, Slovak Republic
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24
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Batista SL, de Araújo IM, Carvalho AL, Alencar MAVSD, Nahas AK, Elias J, Nogueira-Barbosa MH, Salmon CEG, Elias PCL, Moreira AC, Castro M, de Paula FJA. Beyond the metabolic syndrome: Visceral and marrow adipose tissues impair bone quantity and quality in Cushing's disease. PLoS One 2019; 14:e0223432. [PMID: 31613908 PMCID: PMC6793883 DOI: 10.1371/journal.pone.0223432] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 09/20/2019] [Indexed: 12/17/2022] Open
Abstract
The present study was designed to evaluate the relationship between bone traits [bone mineral density (BMD) and trabecular bone score (TBS)] and the accumulation of fat in adipose tissues [abdominal subcutaneous (SAT), visceral (VAT), marrow (MAT) and intrahepatic lipids (IHL)], as well as insulin resistance, in subjects with Cushing’s disease (CD). The study included control (C = 27), paired (P = 16) and Cushing’s disease (CD = 10) groups, which underwent biochemical assessment, dual X-ray absorptiometry, TBS, and magnetic resonance imaging to determine fat deposits. The CD group showed higher serum levels of glucose and insulin, as well as HOMA-IR values, but lower circulatory levels of osteocalcin, in comparison to C and P. The CD group exhibited lower L1-L4 BMD than P (P = 1.059 ± 0.141 vs CD = 0.935 ± 0.093 g/cm2, p < 0.05) (Fig 1A). The lumbar spine BMD from the C group was similar to the other groups. TBS was lower in CD than in P and C (C = 1.512±0.077 vs P = 1.405±0.150 vs CD = 1.135±0.136; p<0.05); there was also significant difference between C and P (p<0.05). MAT, VAT, and IHL were higher in CD than in C and P (p<0.05). Considering all subjects, there was a positive association between TBS with both lumbar spine BMD (R2 = 0.45; p<0.0001) and osteocalcin (R2 = 0.44; p = 0.05). TBS was negatively associated with MAT (R2 = 0.49; p = 0.01), VAT (R2 = 0.55; p<0.05), and HOMA-IR (R2 = 0.44; p<0.01). MAT was positively related with VAT (R2 = 0.44; p<0.01) and IHL (R2 = 0.41; p<0.05). In CD, insulin resistance and adipose tissue dysfunction, including high MAT, are active players in bone deterioration, as confirmed by lower lumbar spine BMD and lower TBS. Thus, our findings point to an additional component of the already well-known complex mechanisms of osteoporosis associated with hypercortisolism.
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Affiliation(s)
- Sérgio Luchini Batista
- Department of Clinical Medicine, Ribeirão Preto Medical School, USP, Ribeirão Preto, SP, Brazil
| | | | - Adriana Lelis Carvalho
- Department of Clinical Medicine, Ribeirão Preto Medical School, USP, Ribeirão Preto, SP, Brazil
| | | | | | - Jorge Elias
- Department of Clinical Medicine, Ribeirão Preto Medical School, USP, Ribeirão Preto, SP, Brazil
| | | | - Carlos E. G. Salmon
- Department of Physics, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil
| | - Paula C. L. Elias
- Department of Clinical Medicine, Ribeirão Preto Medical School, USP, Ribeirão Preto, SP, Brazil
| | - Ayrton C. Moreira
- Department of Clinical Medicine, Ribeirão Preto Medical School, USP, Ribeirão Preto, SP, Brazil
| | - Margaret Castro
- Department of Clinical Medicine, Ribeirão Preto Medical School, USP, Ribeirão Preto, SP, Brazil
| | - Francisco J. A. de Paula
- Department of Clinical Medicine, Ribeirão Preto Medical School, USP, Ribeirão Preto, SP, Brazil
- * E-mail:
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25
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Mosbah H, Brue T, Chanson P. [Not Available]. ANNALES D'ENDOCRINOLOGIE 2019; 80 Suppl 1:S10-S18. [PMID: 31606057 DOI: 10.1016/s0003-4266(19)30112-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Acromegaly is characterized by increased release of growth hormone (GH) and, consequently, Insulin-Like Growth Factor I (IGF-I), most often by a pituitary adenoma. Prolonged exposure to excess hormone leads to progressive somatic disfigurement and a wide range of systemic manifestations that are associated with increased mortality. Transsphenoidal adenomectomy is the treatment of choice of GH-secreting pituitary tumors but surgical cure is not achieved in around 50% of patients, then adjuvant treatment is necessary. Mortality in acromegaly is normalized with biochemical control and has decreased in the last decade with the increased use of adjuvant therapy. Both GH and IGF-I are currently biomarkers for assessing disease activity in patients with acromegaly. However, discordance between GH and IGF-I results is encountered in a quarter of treated patients. The impacts of such a discrepancy over mortality and morbidity and the risk of biochemical and/or clinical recurrence are unclear. Moreover, despite a good biochemical control, some symptoms persist, leading to a decreased quality of life. Back pain due to vertebral fractures seem to be frequent in these patients and underdiagnosed. In patients with acromegaly, bone mineral density is not a reliable predictor of fracture risk. A more accurate evaluation of bone microstructural alterations associated with GH hypersecretion and vertebral fractures may be provided by new radiological devices analyzing alteration of trabecular microarchitecture, leading to a better prevention. © 2019 Published by Elsevier Masson SAS. All rights reserved. Cet article fait partie du numéro supplément Les Must de l'Endocrinologie 2019 réalisé avec le soutien institutionnel de Ipsen-Pharma.
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Affiliation(s)
- Héléna Mosbah
- Assistance publique-Hôpitaux de Paris, hôpital de Bicêtre, 94275 Le Kremlin-Bicêtre, France; Faculté de médecine Paris-Sud, université Paris-Sud et Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France.
| | - Thierry Brue
- Aix-Marseille université, Institut national de la santé et de la recherche médicale (INSERM), U1251, Marseille Medical Genetics (MMG), Marseille, France ; Assistance publique-Hôpitaux de Marseille (AP-HM), service d'endocrinologie, hôpital de la Conception, centre de référence des maladies rares de l'hypophyse HYPO, 13005 Marseille, France
| | - Philippe Chanson
- Assistance publique-Hôpitaux de Paris, hôpital de Bicêtre, 94275 Le Kremlin-Bicêtre, France; Faculté de médecine Paris-Sud, université Paris-Sud et Université Paris-Saclay, 94276 Le Kremlin-Bicêtre, France
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26
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Eller-Vainicher C, Falchetti A, Gennari L, Cairoli E, Bertoldo F, Vescini F, Scillitani A, Chiodini I. DIAGNOSIS OF ENDOCRINE DISEASE: Evaluation of bone fragility in endocrine disorders. Eur J Endocrinol 2019; 180:EJE-18-0991.R1. [PMID: 31042675 DOI: 10.1530/eje-18-0991] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 04/29/2019] [Indexed: 12/12/2022]
Abstract
An underlying disease affecting bone health is present in up to 40% and 60% of osteoporotic post-menopausal women and men respectively. Among the disorders leading to a secondary form of osteoporosis, the endocrine diseases are highly represented. A frequent finding in patients affected with an endocrine-related forms of bone disease is that the skeletal fragility is partially independent of the bone density, since the fracture risk in these patients is related more to a reduction of bone quality than to a decrease of bone mass. As a consequence, bone mineral density evaluation by dual-X-ray Absorptiometry may be inadequate for establishing the risk of fracture in the setting of the endocrine-related forms of osteoporosis. In the recent years several attempts to non-invasively estimating bone quality have been done. Nowadys, some new tools are available in the clinical practice for optimizing the fracture risk estimation in patients with endocrine disorders. The aim of this review is to summarise the evidences regarding the role of the different imaging tools for evaluating bone density and bone quality in the most frequent forms of endocrine-related osteoporosis, such as obesity, diabetes, acromegaly, thyrotoxicosis, primary hyperparathyroidism, hypercortisolism and hypogonadism. For each of these disorders, data regarding both the current available tools and the future possible new techniques for assessing bone fragility in patients with endocrine diseases are reported.
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Affiliation(s)
- Cristina Eller-Vainicher
- C Eller-Vainicher, Endocrinology and Diabetology Units, Department of Medical Sciences and Community, Fondazione Ca'Granda Ospedale Maggiore Policlinico IRCCS, Milan, 20122, Italy
| | - Alberto Falchetti
- A Falchetti, Endocrinology, EndOsMet, Villa Donatello Private Hospital, , Florence, Italy
| | - Luigi Gennari
- L Gennari, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Elisa Cairoli
- E Cairoli, Unit for Bone Metabolism Diseases and Diabetes and Lab of Endocrine and Metabolic Research, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Francesco Bertoldo
- F Bertoldo, Bone Metabolism and Osteoncology Unit, Dept. Medicine, Universita degli Studi di Verona, Verona, Italy
| | - Fabio Vescini
- F Vescini, Endocrinology and Metabolism Unit, University-Hospital S. Maria della Misericordia Udine, Udine, Italy
| | - Alfredo Scillitani
- A Scillitani, Unit of Endocrinology, Casa Sollievo della Sofferenza Scientific Institute, San Giovanni Rotondo, 71013, Italy
| | - Iacopo Chiodini
- I Chiodini, Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
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27
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Hong AR, Lee JH, Kim JH, Kim SW, Shin CS. Effect of Endogenous Parathyroid Hormone on Bone Geometry and Skeletal Microarchitecture. Calcif Tissue Int 2019; 104:382-389. [PMID: 30659307 DOI: 10.1007/s00223-019-00517-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/03/2019] [Indexed: 02/05/2023]
Abstract
Parathyroid hormone (PTH) has anabolic or catabolic effects on bones; however, the skeletal effect of endogenous PTH on cortical and trabecular bones is not yet clear. Therefore, we aimed to examine the effects of an excess and a deficiency of endogenous PTH on the lumbar spine trabecular bone score (TBS) and bone geometry using dual-energy X-ray absorptiometry. We retrospectively included 70 patients with primary hyperparathyroidism (PHPT), 26 patients with idiopathic or postoperative hypoparathyroidism (HypoPT), and 96 normal controls matched by age, sex, and body mass index. The bone mineral density (BMD) at the lumbar spine, femur neck, and total hip was higher in the HypoPT, followed by the controls and PHPT group (all P < 0.001). The TBS was significantly decreased in the PHPT group compared to the controls (P = 0.021); however, statistical significance disappeared after adjusting for the lumbar BMD (P = 0.653). There were no significant differences in the TBS between the HypoPT group and controls as well as the PHPT and HypoPT group. As for bone geometry parameters, the cross-sectional area, cross-sectional moment of inertia, and section modulus were higher in the HypoPT, followed by the controls and PHPT group (all P < 0.001); statistical significance remained after adjusting for the total hip BMD. We also observed a significantly increased cortical neck width in the HypoPT group compared to the PHPT group (P = 0.009). The buckling ratio was higher in the PHPT than the HypoPT group and controls (P = 0.018 and P = 0.013, respectively). The present study demonstrated that an excess of endogenous PTH had catabolic effects on both cortical and trabecular bones. Under conditions of endogenous PTH deficiency, the effect on cortical bone was pronounced, but that on trabecular bone was modest.
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Affiliation(s)
- A Ram Hong
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, South Korea
| | - Ji Hyun Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Jung Hee Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Sang Wan Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea.
- Department of Internal Medicine, Seoul Metropolitan Government Boramae Medical Center, Seoul, South Korea.
| | - Chan Soo Shin
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
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Gadelha MR, Kasuki L, Lim DST, Fleseriu M. Systemic Complications of Acromegaly and the Impact of the Current Treatment Landscape: An Update. Endocr Rev 2019; 40:268-332. [PMID: 30184064 DOI: 10.1210/er.2018-00115] [Citation(s) in RCA: 193] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/26/2018] [Indexed: 12/19/2022]
Abstract
Acromegaly is a chronic systemic disease with many complications and is associated with increased mortality when not adequately treated. Substantial advances in acromegaly treatment, as well as in the treatment of many of its complications, mainly diabetes mellitus, heart failure, and arterial hypertension, were achieved in the last decades. These developments allowed change in both prevalence and severity of some acromegaly complications and furthermore resulted in a reduction of mortality. Currently, mortality seems to be similar to the general population in adequately treated patients with acromegaly. In this review, we update the knowledge in complications of acromegaly and detail the effects of different acromegaly treatment options on these complications. Incidence of mortality, its correlation with GH (cumulative exposure vs last value), and IGF-I levels and the shift in the main cause of mortality in patients with acromegaly are also addressed.
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Affiliation(s)
- Mônica R Gadelha
- Neuroendocrinology Research Center/Endocrine Section and Medical School, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Neuroendocrine Section, Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria Estadual de Saúde do Rio de Janeiro, Rio de Janeiro, Brazil.,Neuropathology and Molecular Genetics Laboratory, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
| | - Leandro Kasuki
- Neuroendocrinology Research Center/Endocrine Section and Medical School, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Neuroendocrine Section, Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria Estadual de Saúde do Rio de Janeiro, Rio de Janeiro, Brazil.,Endocrine Unit, Hospital Federal de Bonsucesso, Rio de Janeiro, Brazil
| | - Dawn S T Lim
- Department of Endocrinology, Singapore General Hospital, Singapore, Singapore
| | - Maria Fleseriu
- Department of Endocrinology, Diabetes and Metabolism, Oregon Health and Science University, Portland, Oregon.,Department of Neurological Surgery, Oregon Health and Science University, Portland, Oregon.,Northwest Pituitary Center, Oregon Health and Science University, Portland, Oregon
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30
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Mazziotti G, Frara S, Giustina A. Pituitary Diseases and Bone. Endocr Rev 2018; 39:440-488. [PMID: 29684108 DOI: 10.1210/er.2018-00005] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 04/16/2018] [Indexed: 12/12/2022]
Abstract
Neuroendocrinology of bone is a new area of research based on the evidence that pituitary hormones may directly modulate bone remodeling and metabolism. Skeletal fragility associated with high risk of fractures is a common complication of several pituitary diseases such as hypopituitarism, Cushing disease, acromegaly, and hyperprolactinemia. As in other forms of secondary osteoporosis, pituitary diseases generally affect bone quality more than bone quantity, and fractures may occur even in the presence of normal or low-normal bone mineral density as measured by dual-energy X-ray absorptiometry, making difficult the prediction of fractures in these clinical settings. Treatment of pituitary hormone excess and deficiency generally improves skeletal health, although some patients remain at high risk of fractures, and treatment with bone-active drugs may become mandatory. The aim of this review is to discuss the physiological, pathophysiological, and clinical insights of bone involvement in pituitary diseases.
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Affiliation(s)
| | - Stefano Frara
- Institute of Endocrinology, Università Vita-Salute San Raffaele, Milan, Italy
| | - Andrea Giustina
- Institute of Endocrinology, Università Vita-Salute San Raffaele, Milan, Italy
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31
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Belaya Z, Grebennikova T, Melnichenko G, Nikitin A, Solodovnikov A, Brovkina O, Grigoriev A, Rozhinskaya L, Lutsenko A, Dedov I. Effects of active acromegaly on bone mRNA and microRNA expression patterns. Eur J Endocrinol 2018; 178:353-364. [PMID: 29374071 DOI: 10.1530/eje-17-0772] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 01/26/2018] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To evaluate the response of bone to chronic long-term growth hormone (GH) and insulin-like growth factor-1 (IGF1) excess by measuring the expression of selected mRNA and microRNA (miR) in bone tissue samples of patients with active acromegaly. DESIGN Case-control study. METHODS Bone tissue samples were obtained during transsphenoidal adenomectomy from the sphenoid bone (sella turcica) from 14 patients with clinically and biochemically confirmed acromegaly and 10 patients with clinically non-functioning pituitary adenoma (NFPA) matched by sex and age. Expression of genes involved in the regulation of bone remodeling was studied using quantitative polymerase chain reaction (qPCR). RESULTS Of the genes involved in osteoblast and osteoclast activity, only alkaline phosphatase (ALP) mRNA was 50% downregulated in patients with acromegaly. GH excess caused increased expression of the Wnt signaling antagonists (DKK1) and agonists (WNT10B) and changes in the levels of miR involved in mesenchymal stem cell commitment to chondrocytes (miR-199a-5p) or adipocytes (miR-27-5p, miR-125b-5p, miR-34a-5p, miR-188-3p) P < 0.05; q < 0.1. Relevant compensatory mechanisms were found through the changes in miR involved in osteoblastogenesis (miR-210-5p, miR-135a-5p, miR-211, miR-23a-3p, miR-204-5p), but the expression of TWIST1 was 50% downregulated and RUNX2 was unchanged. CONCLUSIONS Acromegaly had minimal effects on tested mRNAs specific to osteoblast or osteoclast function except for downregulated ALP expression. The expressions of miR known to be involved in mesenchymal stem cell commitment and downregulated TWIST1 expression suggest acromegaly has a negative effect on osteoblastogenesis.
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Affiliation(s)
- Zhanna Belaya
- The National Medical Research Centre for EndocrinologyMoscow, Russia
| | | | | | - Alexey Nikitin
- Federal Research and Clinical Center FMBA of RussiaMoscow, Russia
| | | | - Olga Brovkina
- Federal Research and Clinical Center FMBA of RussiaMoscow, Russia
| | - Andrey Grigoriev
- The National Medical Research Centre for EndocrinologyMoscow, Russia
| | | | | | - Ivan Dedov
- The National Medical Research Centre for EndocrinologyMoscow, Russia
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Dalle Carbonare L, Micheletti V, Cosaro E, Valenti MT, Mottes M, Francia G, Davì MV. Bone histomorphometry in acromegaly patients with fragility vertebral fractures. Pituitary 2018; 21:56-64. [PMID: 29214508 DOI: 10.1007/s11102-017-0847-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
CONTEXT The high risk of vertebral fractures (VFs) in acromegaly patients despite normal bone mineral density (BMD) is well known. The reasons for this paradoxical finding of skeleton fragility are poorly understood due to the limited data on bone histomorphometry in acromegaly. OBJECTIVE This study aimed to analyze histomorphometric parameters including bone microarchitecture in acromegaly patients with VFs and normal BMD compared to normal subjects, and also to evaluate the differences between active and controlled acromegaly patients. PATIENTS AND METHODS Forty-seven acromegaly patients (17 active, 30 controlled), median (range) age 57 years (30-88) were evaluated for bone turnover, morphometric VFs and BMD by dual-energy X-ray absorptiometry at lumbar spine and hip; 12 patients with VFs and normal BMD underwent iliac crest bone biopsy; 12 biopsies were taken at the autopsy in healthy sex and age-matched control subjects. RESULTS The histomorphometric evaluation of acromegaly fractured patients was compared with that of normal controls and showed significantly reduced median (range) levels of bone volume/tissue volume (BV/TV: 15.37% (7.93-26.75) vs. 18.61% (11.75-27.31), p = 0.036), trabecular thickness (TbTh: 77.6 µm (61.7-88.3) vs. 82.7 µm (72.3-92.0) p = 0.045), with increased trabecular separation (TbSp: 536.4 µm (356.2-900.6) vs. 370.3 µm (377.1-546.3) p = 0.038) and increased cortical thickness (1268 μm (752-2521) vs. 1065 μm (851-1205) p = 0.025) and porosity (11.9% (10.2-13.3) vs. 4.8% (1.6-8.8) p = 0.0008). While active acromegaly patients showed histomophometric features of increased bone turnover, patients with controlled disease presented normal bone turnover with significantly lower osteoblastic activity, expressed as osteoblast number (p = 0.001), active osteoblasts and vigor (p = 0.014) in the presence of reduced osteocyte number (p = 0.008) compared to active disease. CONCLUSIONS The apparent paradox of bone fragility in acromegaly patients with a normal BMD can be explained by increased cortical thickness and porosity and reduced trabecular thickness with increased trabecular separation. These structural and microarchitectural abnormalities persist in the controlled phase of acromegaly despite bone turnover normalization. The main determinant of bone disease after hormonal control is severe osteoblastic dysfunction.
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Affiliation(s)
- L Dalle Carbonare
- Department of Medicine, Medicina Interna D, University of Verona, Piazzale Scuro, Policlinico G.B. Rossi, 37134, Verona, Italy.
| | - V Micheletti
- Department of Medicine, Medicina Interna D, University of Verona, Piazzale Scuro, Policlinico G.B. Rossi, 37134, Verona, Italy
| | - E Cosaro
- Department of Medicine, Medicina Interna D, University of Verona, Piazzale Scuro, Policlinico G.B. Rossi, 37134, Verona, Italy
| | - M T Valenti
- Department of Neurosciences, Biomedicine and Movement Sciences, Section of Biology and Genetics, University of Verona, Verona, Italy
| | - M Mottes
- Department of Neurosciences, Biomedicine and Movement Sciences, Section of Biology and Genetics, University of Verona, Verona, Italy
| | - G Francia
- Endocrinology Unit, Ospedale Pederzoli, Peschiera del Garda, Verona, Italy
| | - M V Davì
- Department of Medicine, Medicina Interna D, University of Verona, Piazzale Scuro, Policlinico G.B. Rossi, 37134, Verona, Italy
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33
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Silva BC, Leslie WD. Trabecular Bone Score: A New DXA-Derived Measurement for Fracture Risk Assessment. Endocrinol Metab Clin North Am 2017; 46:153-180. [PMID: 28131130 DOI: 10.1016/j.ecl.2016.09.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Trabecular bone score (TBS) is a novel method that assesses skeletal texture from spine dual-energy X-ray absorptiometry (DXA) images. TBS improves fracture-risk prediction beyond that provided by DXA bone mineral density (BMD) and clinical risk factors, and can be incorporated to the Word Health Organization Fracture Risk Assessment tool (FRAX®) to enhance fracture prediction. There is insufficient evidence that TBS can be used to monitor treatment with bisphosphonates. TBS may be particularly helpful to assess fracture risk in diabetes. This article reviews technical and clinical aspects of TBS and its potential utility as a clinical tool to predict fracture risk.
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Affiliation(s)
- Barbara C Silva
- Department of Medicine, UNI-BH, Santa Casa Hospital, Uberaba, 370/705, Belo Horizonte, MG 30180-010, Brazil.
| | - William D Leslie
- Department of Medicine, University of Manitoba, (C5121) 409 Tache Avenue, Winnipeg, MB R2H 2A6, Canada
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Abstract
Acromegalic osteopathy is an emerging complication of acromegaly characterized by increase in bone turnover, deterioration in bone microarchitecture and high risk of vertebral fractures. Vertebral fractures, as diagnosed by a radiological and morphometric approach, occur in about one-third of acromegaly patients in close relationship with duration of active disease. However, the prediction of vertebral fractures in this clinical setting is still a matter of uncertainty, since the pathogenesis of acromegalic osteopathy is multifactorial and fractures may occur even in presence of normal bone mineral density. In this narrative article, we summarize the pathophysiology and clinical aspects of acromegalic osteopathy.
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Affiliation(s)
- G Mazziotti
- Chair of Endocrinology, University of Brescia, Via Biseo, 17, 25123, Brescia, Italy
- Endocrinology Unit, ASST Carlo Poma of Mantua, Mantua, Italy
| | - F Maffezzoni
- Chair of Endocrinology, University of Brescia, Via Biseo, 17, 25123, Brescia, Italy
| | - S Frara
- Chair of Endocrinology, University of Brescia, Via Biseo, 17, 25123, Brescia, Italy
| | - A Giustina
- Chair of Endocrinology, University of Brescia, Via Biseo, 17, 25123, Brescia, Italy.
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Maffezzoni F, Maddalo M, Frara S, Mezzone M, Zorza I, Baruffaldi F, Doglietto F, Mazziotti G, Maroldi R, Giustina A. High-resolution-cone beam tomography analysis of bone microarchitecture in patients with acromegaly and radiological vertebral fractures. Endocrine 2016; 54:532-542. [PMID: 27601020 DOI: 10.1007/s12020-016-1078-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 07/31/2016] [Indexed: 01/23/2023]
Abstract
Vertebral fractures are an emerging complication of acromegaly but their prediction is still difficult occurring even in patients with normal bone mineral density. In this study we evaluated the ability of high-resolution cone-beam computed tomography to provide information on skeletal abnormalities associated with vertebral fractures in acromegaly. 40 patients (24 females, 16 males; median age 57 years, range 25-72) and 21 healthy volunteers (10 females, 11 males; median age 60 years, range: 25-68) were evaluated for trabecular (bone volume/trabecular volume ratio, mean trabecular separation, and mean trabecular thickness) and cortical (thickness and porosity) parameters at distal radius using a high-resolution cone-beam computed tomography system. All acromegaly patients were evaluated for morphometric vertebral fractures and for mineral bone density by dual-energy X-ray absorptiometry at lumbar spine, total hip, femoral neck, and distal radius. Acromegaly patients with vertebral fractures (15 cases) had significantly (p < 0.05) lower bone volume/trabecular volume ratio, greater mean trabecular separation, and higher cortical porosity vs. nonfractured patients, without statistically significant differences in mean trabecular thickness and cortical thickness. Fractured and nonfractured acromegaly patients did not have significant differences in bone density at either skeletal site. Patients with acromegaly showed lower bone volume/trabecular volume ratio (p = 0.003) and mean trabecular thickness (p < 0.001) and greater mean trabecular separation (p = 0.02) as compared to control subjects, without significant differences in cortical thickness and porosity. This study shows for the first time that abnormalities of bone microstructure are associated with radiological vertebral fractures in acromegaly. High-resolution cone-beam computed tomography at the distal radius may be useful to evaluate and predict the effects of acromegaly on bone microstructure.
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Affiliation(s)
| | | | - Stefano Frara
- Endocrinology Unit, University of Brescia, Brescia, Italy
| | - Monica Mezzone
- Endocrinology Unit, University of Brescia, Brescia, Italy
| | - Ivan Zorza
- Radiology Unit, University of Brescia, Brescia, Italy
| | - Fabio Baruffaldi
- Medical Technology Laboratory, Rizzoli Orthopaedic Institute, Bologna, Italy
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Valassi E, Crespo I, Malouf J, Vilades D, Leta R, Llauger J, Urgell E, Aulinas A, Marín AM, Biagetti B, Webb SM. Epicardial fat is a negative predictor of spine volumetric bone mineral density and trabecular bone score in acromegaly. Endocrine 2016; 53:860-4. [PMID: 27055553 DOI: 10.1007/s12020-016-0945-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 03/26/2016] [Indexed: 10/22/2022]
Affiliation(s)
- Elena Valassi
- Endocrinology/Medicine Department, Research Center for Pituitary Diseases, Hospital Sant Pau, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER, Unidad 747), IIB-Sant Pau, ISCIII and Universitat Autònoma de Barcelona (UAB), c/Sant Antoni Mª Claret 167, 08025, Barcelona, Spain.
| | - Iris Crespo
- Endocrinology/Medicine Department, Research Center for Pituitary Diseases, Hospital Sant Pau, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER, Unidad 747), IIB-Sant Pau, ISCIII and Universitat Autònoma de Barcelona (UAB), c/Sant Antoni Mª Claret 167, 08025, Barcelona, Spain
| | - Jorge Malouf
- Mineral Metabolism Unit, Medicine Department, Hospital Sant Pau, Barcelona, Spain
| | - David Vilades
- Cardiology Department, Hospital Sant Pau, Barcelona, Spain
| | - Ruben Leta
- Cardiology Department, Hospital Sant Pau, Barcelona, Spain
| | - Jaume Llauger
- Radiology Department, Hospital Sant Pau, Barcelona, Spain
| | - Eulàlia Urgell
- Biochemistry Department, Hospital Sant Pau, Barcelona, Spain
| | - Anna Aulinas
- Endocrinology/Medicine Department, Research Center for Pituitary Diseases, Hospital Sant Pau, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER, Unidad 747), IIB-Sant Pau, ISCIII and Universitat Autònoma de Barcelona (UAB), c/Sant Antoni Mª Claret 167, 08025, Barcelona, Spain
| | - Ana Maria Marín
- Mineral Metabolism Unit, Medicine Department, Hospital Sant Pau, Barcelona, Spain
| | - Betina Biagetti
- Endocrinology Department, Hospital Vall d'Hebron, Barcelona, Spain
| | - Susan M Webb
- Endocrinology/Medicine Department, Research Center for Pituitary Diseases, Hospital Sant Pau, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER, Unidad 747), IIB-Sant Pau, ISCIII and Universitat Autònoma de Barcelona (UAB), c/Sant Antoni Mª Claret 167, 08025, Barcelona, Spain
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37
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Godang K, Olarescu NC, Bollerslev J, Heck A. Treatment of acromegaly increases BMD but reduces trabecular bone score: a longitudinal study. Eur J Endocrinol 2016; 175:155-64. [PMID: 27220351 DOI: 10.1530/eje-16-0340] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 05/23/2016] [Indexed: 11/08/2022]
Abstract
CONTEXT Bone turnover is increased in acromegaly. Despite normalization of bone turnover after treatment, the risk for vertebral fractures remains increased. Gonadal status, but not BMD, is correlated with vertebral fractures. Trabecular bone score (TBS) is related to bone microarchitecture. OBJECTIVE The aim of this study is to assess the longitudinal change in TBS and BMD following treatment for acromegaly. DESIGN, SETTING, PATIENTS, INTERVENTIONS, AND MAIN OUTCOME MEASURES: This longitudinal study included 48 patients with acromegaly between 2005 and 2015. BMD, TBS, and markers for bone turnover (P1NP and CTX-1) were measured at baseline and following treatment. RESULTS Following treatment, the mean TBS decreased by 3.0 (±7.0) %, whereas the BMD at the lumbar spine (LS) increased by 3.2 (±4.9) % (both P<0.01). The changes in BMD LS and TBS were not correlated (P=0.87). The TBS change was found to be -4.5 % (±6.7; P=0.003) in men and -0.3 % (±6.8; P=0.85) in women (P=0.063 for interaction men vs women). The mean BMD LS increased in men +4.2 g/cm(2) (±4.3; P<0.001), but not in women +1.5 g/cm(2) (±5.6; P=0.36); (P=0.073 for interaction). BMD increased in the ultradistal radius and total body (both P<0.01). The increase in BMD LS was associated with a decrease in P1NP and CTX-1 (P<0.001) and with lower P1NP and CTX-1 at the follow-up (P<0.02). CONCLUSION Treatment of acromegaly affects TBS and BMD at LS in different manners. The reduction of bone turnover markers predicts the increase in BMD but not the decrease in TBS. The DXA changes were more pronounced in men. Alterations in trabecular bone architecture may explain the persistent fracture risk despite the increase in BMD after disease control.
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Affiliation(s)
- Kristin Godang
- Section of Specialized EndocrinologyDepartment of Endocrinology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Nicoleta Cristina Olarescu
- Section of Specialized EndocrinologyDepartment of Endocrinology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Jens Bollerslev
- Section of Specialized EndocrinologyDepartment of Endocrinology, Oslo University Hospital Rikshospitalet, Oslo, Norway Faculty of MedicineUniversity of Oslo, Oslo, Norway
| | - Ansgar Heck
- Section of Specialized EndocrinologyDepartment of Endocrinology, Oslo University Hospital Rikshospitalet, Oslo, Norway Faculty of MedicineUniversity of Oslo, Oslo, Norway
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