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Kohler R, Segvich DM, Reul O, Metzger CE, Allen MR, Wallace JM. Romosozumab rescues impaired bone mass and strength in a murine model of diabetic kidney disease. Bone Rep 2024; 21:101774. [PMID: 38778834 PMCID: PMC11108809 DOI: 10.1016/j.bonr.2024.101774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
As international incidence of diabetes and diabetes-driven comorbidities such as chronic kidney disease (CKD) continue to climb, interventions are needed that address the high-risk skeletal fragility of what is a complex disease state. Romosozumab (Romo) is an FDA-approved sclerostin inhibitor that has been shown to increase bone mineral density and decrease fracture rates in osteoporotic patients with mild to severe CKD, but its effect on diabetes-weakened bone is unknown. We aimed to test Romo's performance in a model of combined diabetes and CKD. 6-week old male C57BL/6 mice were randomly divided into control (CON) and disease model (STZ-Ad) groups, using a previously established streptozotocin- and adenine-diet-induced model. After 16 weeks of disease induction, both CON and STZ-Ad groups were subdivided into two treatment groups and given weekly subcutaneous injections of 100 μL vehicle (phosphorus buffered saline, PBS) or 10 mg/kg Romo. Mice were euthanized after 4 weeks of treatment via cardiac exsanguination and cervical dislocation. Hindlimb bones and L4 vertebrae were cleaned of soft tissue, wrapped in PBS-soaked gauze and stored at -20C. Right tibiae, femora, and L4s were scanned via microcomputed tomography; tibiae were then tested to failure in 4-pt bending while L4s were compression tested. Romo treatment significantly increased cortical and trabecular bone mass in both STZ-Ad and CON animals. These morphological improvements created corresponding increases in cortical bending strength and trabecular compression strength, with STZ-Ad treated mice surpassing vehicle CON mice in all trabecular mechanics measures. These results suggest that Romo retains its efficacy at increasing bone mass and strength in diabetic kidney disease.
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Affiliation(s)
- Rachel Kohler
- Department of Biomedical Engineering, Indiana University Purdue University of Indianapolis, Indianapolis, IN, United States
| | - Dyann M. Segvich
- Department of Biomedical Engineering, Indiana University Purdue University of Indianapolis, Indianapolis, IN, United States
| | - Olivia Reul
- Department of Biomedical Engineering, Indiana University Purdue University of Indianapolis, Indianapolis, IN, United States
| | - Corinne E. Metzger
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Matthew R. Allen
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN, United States
- Roudebush Veterans Administration Medical Center, Indianapolis, IN, United States
| | - Joseph M. Wallace
- Department of Biomedical Engineering, Indiana University Purdue University of Indianapolis, Indianapolis, IN, United States
- Roudebush Veterans Administration Medical Center, Indianapolis, IN, United States
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Cianferotti L, Cipriani C, Palermo A, Viapiana O, Zavatta G, Mazziotti G. A practical approach for anabolic treatment of bone fragility with romosozumab. J Endocrinol Invest 2024:10.1007/s40618-024-02395-2. [PMID: 38789679 DOI: 10.1007/s40618-024-02395-2] [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] [Received: 02/25/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024]
Abstract
BACKGROUND Romosozumab, a fully humanized anti-sclerostin-antibody, is a bone-builder stimulating osteoblasts and inhibiting osteoclast by activation of the canonical Wnt-beta catenin signaling. This unique mechanism of action has the potential to address unmet needs in osteoporosis management. METHODS The multifaceted practical clinical issues related to romosozumab are discussed, especially focusing on the rationale of employing a sclerostin inhibitor to target bone fragility as first line or second line treatment in post-menopausal osteoporosis and in males at increased risk of fractures. RESULTS Four randomized clinical trials with several post-hoc analyses and more than ten observational studies have consistently demonstrated that romosozumab is effective in rapidly increasing bone mineral density (BMD) and decreasing risk of vertebral, non-vertebral and hip fractures in post-menopausal women at very-high risk of fractures. In male osteoporosis, only data on BMD are available. Noteworthy, romosozumab was shown to be more effective and rapid than teriparatide in improving BMD, bone structure and strength at the hip, especially in women already treated with anti-resorptive drugs. Interestingly, even if romosozumab displays best results in treatment-naïve patients, its favourable effects on BMD were observed even in women previously treated with teriparatide or denosumab, although to a lesser extent. CONCLUSIONS Based on the available evidence, romosozumab could be proposed as ideal drug in several clinical settings, such as non-fractured post-menopausal women at very-high risk of fractures, patients with recent hip fracture, patients non responder to bisphosphonates and short-term denosumab therapy.
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Affiliation(s)
- L Cianferotti
- Bone Metabolic Diseases Unit, Department of Experimental and Clinical Biomedical Sciences, University Hospital of Florence, University of Florence, Florence, Italy
| | - C Cipriani
- Department of Clinical, Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
| | - A Palermo
- Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
- Unit of Metabolic Bone and Thyroid Disorders, Department of Medicine, Università Campus Bio-Medico di Roma, Rome, Italy
| | - O Viapiana
- Rheumatology Section, Department of Medicine, University of Verona, Verona, Italy
| | - G Zavatta
- Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - G Mazziotti
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini, 420090, Pieve Emanuele, MI, Italy.
- Endocrinology, Diabetology and Andrology Unit, Osteoporosis and Bone Diseases Section, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy.
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Anastasilakis AD, Tsourdi E. Τhe story of sclerostin inhibition: the past, the present, and the future. Hormones (Athens) 2024:10.1007/s42000-023-00521-y. [PMID: 38170438 DOI: 10.1007/s42000-023-00521-y] [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] [Received: 11/10/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024]
Abstract
Sclerostin inhibits osteoblast activity by hampering activation of the canonical Wnt signaling pathway and simultaneously stimulates osteoclastogenesis through upregulation of the receptor activator of NFκB ligand (RANKL). Thus, antibodies against sclerostin (Scl-Abs), besides promoting bone formation, suppress bone resorption and dissociate bone formation from resorption. This dual action results in remarkable increases of bone mineral density which are of a greater magnitude compared to the other antiosteoporotic treatments and are accompanied by decreases of fracture risk at all skeletal sites. The anabolic effect subsides after the first few months of treatment and a predominantly antiresorptive effect remains after this period, limiting its use to 12 months. Furthermore, these effects are largely reversible upon discontinuation; therefore, subsequent treatment with antiresorptives is indicated to maintain or further increase the bone gains achieved. Romosozumab is currently the only Scl-Ab approved for the treatment of severe postmenopausal osteoporosis. Indications for use in other populations, such as males, premenopausal women, and patients with glucocorticoid-induced osteoporosis, are pending. Additionally, the efficacy of Scl-Abs in other bone diseases, such as osteogenesis imperfecta, hypophosphatasia, X-linked hypophosphatemia, and bone loss associated with malignancies, is under thorough investigation. Cardiovascular safety concerns currently exclude patients at high cardiovascular risk from this treatment.
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Affiliation(s)
- Athanasios D Anastasilakis
- Department of Endocrinology, 424 Military General Hospital, Ring Road, 564 29 N. Efkarpia, Thessaloniki, Greece.
| | - Elena Tsourdi
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
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Sindel D. Osteoporosis: Spotlight on current approaches to pharmacological treatment. Turk J Phys Med Rehabil 2023; 69:140-152. [PMID: 37671373 PMCID: PMC10475904 DOI: 10.5606/tftrd.2023.13054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 09/07/2023] Open
Abstract
Despite the availability of safe and effective anti-osteoporosis treatments, osteoporosis continues to be undertreated. The increase in fragility fractures, which is the main clinical consequence of osteoporosis, is a major problem for healthcare systems of countries. A broad range of drugs including antiresorptive and anabolic agents are used in the pharmacological treatment of osteoporosis. Fracture risk assessment in drug selection is of utmost importance in terms of guiding treatment. The recommended thresholds for osteoporosis treatment decision making are based on major osteoporotic and hip fracture probabilities from the Fracture Risk Assessment Tool (FRAX®). Currently, antiresorptive agents are usually the first choice to increase bone mineral density (BMD) and reduce the fracture risk. Bisphosphonates and antiresorptive drugs such as denosumab, a nuclear factor kappa-B ligand (RANKL) inhibitor, are the most widely used drugs in the treatment of osteoporosis. Bisphosphonates alone are unlikely to provide long-term protection against fracture and restore BMD in patients with severe osteoporosis and high fracture risk. In such patients, treatment with an anabolic agent such as teriparatide, abaloparatide, or romosozumab should be ideally initiated to achieve maximal gain in bone mass and preserve the microarchitecture. Ideally, an antiresorptive drug should be continued to maintain gain in bone mass.
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Affiliation(s)
- Dilşad Sindel
- Department of Physical Medicine and Rehabilitation, Istanbul University Istanbul Faculty of Medicine, Istanbul, Türkiye
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Saito T, Mizobuchi M, Kato T, Suzuki T, Fujiwara Y, Kanamori N, Makuuchi M, Honda H. One-Year Romosozumab Treatment Followed by One-Year Denosumab Treatment for Osteoporosis in Patients on Hemodialysis: An Observational Study. Calcif Tissue Int 2023; 112:34-44. [PMID: 36287217 DOI: 10.1007/s00223-022-01031-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 10/10/2022] [Indexed: 01/07/2023]
Abstract
There is limited evidence on the use of romosozumab (ROMO) in the treatment of osteoporosis in patients on hemodialysis (HD); thus, we aimed to investigate this topic. This prospective, observational, single-center cohort study included 13 prior osteoporosis treatment-naïve patients on HD with osteoporosis. They first received ROMO once monthly for 12 months (210 mg; subcutaneously once every month). Thereafter, they received denosumab (DENO) for an additional 12 months (60 mg; subcutaneously once every 6 months). We examined the incidence of new fractures; treatment safety; and temporal changes in the bone mineral density (BMD), bone metabolism markers, and vascular calcification. No new cases of fractures were noted. The median one-year percentage changes (from the baseline) in the BMDs at the lumbar spine (LS), total hip (TH), and femoral neck (FN) were + 9.0%, + 2.5%, and + 4.7%, respectively. These changes were maintained for 24 months. The corresponding relative changes from the baseline to 24 months thereafter were + 14.9%, + 5.4%, and + 6.5%, respectively. The percentage changes in TH BMD and FN BMD were negatively correlated with baseline BMD. Coronary artery and thoracic aorta calcification scores increased slightly from baseline to 12 months thereafter. However, fatal events (cardiovascular disease-associated and all-cause deaths) did not occur during ROMO treatment. Effectiveness of ROMO was better in patients who had severe osteoporosis with low TH BMD, low FN BMD, and high tartrate-resistant acid phosphatase 5b level at ROMO initiation.
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Affiliation(s)
- Tomohiro Saito
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-Ku, Tokyo, 142-8555, Japan.
| | - Masahide Mizobuchi
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-Ku, Tokyo, 142-8555, Japan
| | - Tadashi Kato
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-Ku, Tokyo, 142-8555, Japan
| | - Taihei Suzuki
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-Ku, Tokyo, 142-8555, Japan
| | - Yasuro Fujiwara
- Sannoudai Hospital, Isioka-Si, 4-1-38 Higasiishioka, Ibaraki, 315-0037, Japan
| | - Naoaki Kanamori
- Sannoudai Hospital, Isioka-Si, 4-1-38 Higasiishioka, Ibaraki, 315-0037, Japan
| | - Mikio Makuuchi
- Sannoudai Hospital, Isioka-Si, 4-1-38 Higasiishioka, Ibaraki, 315-0037, Japan
| | - Hirokazu Honda
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-Ku, Tokyo, 142-8555, Japan
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Romosozumab improves low bone mineral density in a postmenopausal woman undergoing chronic hemodialysis and treated with a calcium-sensing receptor agonist. Bone Rep 2022; 17:101639. [DOI: 10.1016/j.bonr.2022.101639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/18/2022] [Accepted: 11/19/2022] [Indexed: 11/22/2022] Open
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Haarhaus M, Aaltonen L, Cejka D, Cozzolino M, de Jong RT, D'Haese P, Evenepoel P, Lafage-Proust MH, Mazzaferro S, McCloskey E, Salam S, Skou Jørgensen H, Vervloet M. Management of fracture risk in CKD-traditional and novel approaches. Clin Kidney J 2022; 16:456-472. [PMID: 36865010 PMCID: PMC9972845 DOI: 10.1093/ckj/sfac230] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
The coexistence of osteoporosis and chronic kidney disease (CKD) is an evolving healthcare challenge in the face of increasingly aging populations. Globally, accelerating fracture incidence causes disability, impaired quality of life and increased mortality. Consequently, several novel diagnostic and therapeutic tools have been introduced for treatment and prevention of fragility fractures. Despite an especially high fracture risk in CKD, these patients are commonly excluded from interventional trials and clinical guidelines. While management of fracture risk in CKD has been discussed in recent opinion-based reviews and consensus papers in the nephrology literature, many patients with CKD stages 3-5D and osteoporosis are still underdiagnosed and untreated. The current review addresses this potential treatment nihilism by discussing established and novel approaches to diagnosis and prevention of fracture risk in patients with CKD stages 3-5D. Skeletal disorders are common in CKD. A wide variety of underlying pathophysiological processes have been identified, including premature aging, chronic wasting, and disturbances in vitamin D and mineral metabolism, which may impact bone fragility beyond established osteoporosis. We discuss current and emerging concepts of CKD-mineral and bone disorders (CKD-MBD) and integrate management of osteoporosis in CKD with current recommendations for management of CKD-MBD. While many diagnostic and therapeutic approaches to osteoporosis can be applied to patients with CKD, some limitations and caveats need to be considered. Consequently, clinical trials are needed that specifically study fracture prevention strategies in patients with CKD stages 3-5D.
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Affiliation(s)
| | - Louise Aaltonen
- Turku University Hospital, Kidney Center, Department of Medicine, Turku, Finland
| | - Daniel Cejka
- Department of Medicine III – Nephrology, Hypertension, Transplantation, Rheumatology, Geriatrics, Ordensklinikum Linz - Elisabethinen Hospital, Linz, Austria
| | - Mario Cozzolino
- Department of Health Sciences, Renal Division, University of Milan, ASST Santi Paolo e Carlo, Milan, Italy
| | - Renate T de Jong
- Amsterdam UMC location Vrije Universiteit Amsterdam, Department of Internal Medicine and Endocrinology, Amsterdam, The Netherlands,Amsterdam Gastroenterology Endocrinology Metabolism Institute, Amsterdam, The Netherlands
| | - Patrick D'Haese
- Laboratory of Pathophysiology, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Pieter Evenepoel
- Department of Nephrology, University Hospitals Leuven, Leuven, Belgium,Department of Microbiology Immunology and Transplantation, Nephrology and Renal Transplantation Research Group, KU Leuven-University of Leuven, Leuven, Belgium
| | | | - Sandro Mazzaferro
- Nephrology Unit at Policlinico Umberto I Hospital and Department of Translation and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Eugene McCloskey
- Academic Unit of Bone Metabolism, Centre for Integrated research in Musculoskeletal Ageing, Mellanby Centre for Musculoskeletal Research, Department of Oncology & Metabolism, University of Sheffield, Sheffield, UK
| | - Syazrah Salam
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK and Sheffield Kidney Institute, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Hanne Skou Jørgensen
- Department of Microbiology Immunology and Transplantation, Nephrology and Renal Transplantation Research Group, KU Leuven-University of Leuven, Leuven, Belgium,Aarhus University Hospital, Department of Kidney Diseases, Aarhus,Denmark,Aarhus University, Department of Clinical Medicine, Aarhus,Denmark
| | - Marc Vervloet
- Department of Nephrology, Amsterdam University Medical Center, VU University Amsterdam, Amsterdam, The Netherlands,Amsterdam Cardiovascular Sciences, Amsterdam University Medical Center, Amsterdam, The Netherlands
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