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Saji N, Murotani K, Hisada T, Tsuduki T, Sugimoto T, Kimura A, Niida S, Toba K, Sakurai T. The relationship between the gut microbiome and mild cognitive impairment in patients without dementia: A cross-sectional study conducted in Japan. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yano S, Nagai A, Isomura M, Yamasaki M, Sugimoto T, Takeda M, Kohno Y, Nabika T. Serum Level Of A Bone Resorption Marker, Tartrate-Resistant Acid Phosphatase-5B, Is Associated With Carotid Intima-Media Thickness: Shimane Cohre Study. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kanazawa I, Notsu M, Miyake H, Tanaka K, Sugimoto T. Assessment using serum insulin-like growth factor-I and bone mineral density is useful for detecting prevalent vertebral fractures in patients with type 2 diabetes mellitus. Osteoporos Int 2018; 29:2527-2535. [PMID: 30030585 DOI: 10.1007/s00198-018-4638-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/09/2018] [Indexed: 01/07/2023]
Abstract
UNLABELLED Bone mineral density (BMD) is less useful for evaluating fracture risk in type 2 diabetes. This study showed for the first time that combined evaluation by serum insulin-like growth factor-I and BMD is useful to assess the risk of vertebral fracture in postmenopausal women and men with type 2 diabetes. INTRODUCTION BMD is less useful for evaluating fracture risk in type 2 diabetes mellitus (T2DM). We aimed to examine the usefulness of combined evaluation by BMD and serum insulin-like growth factor-I (IGF-I) to assess the risk of vertebral fracture (VF) in T2DM. METHODS In this cross-sectional study, 412 postmenopausal women and 582 men with T2DM, whose BMD, bone turnover markers, and serum IGF-I were measured, were enrolled. The association of BMD alone, serum IGF-I alone, and combined assessment by BMD and IGF-I with the presence of VF was examined. RESULTS Multiple logistic regression analyses showed that IGF-I as well as BMD T-score at lumbar (L) and femoral neck (FN) were significantly associated with VF except for IGF-I in men, respectively. Receiver operating characteristic curves showed that the cutoff values of IGF-I, L T-score and FN T-score were 127 ng/mL, - 1.78, and - 2.02 in postmenopausal women and 127 ng/mL, - 1.67, and - 1.24 in men. Based on the cutoff vales, the subjects were divided into four categories. The category of lower IGF-I and lower T-scores had a significant increased risk of VF compared to higher IGF-I and higher T-scores both in postmenopausal women and in men. The sensitivity and specificity of the combined assessment to detect VF were better compared to using BMD alone or IGF-I alone. CONCLUSIONS This is the first study to show that in addition to BMD measurement, the assessment using serum IGF-I is useful to estimate the prevalence of VF in patients with T2DM.
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Sugimoto T, Bandera F, Generati G, Alfonzetti E, Tufaro V, Guazzi M. P5621The primary role of left atrial function in the cardiac output response during exercise in patients with left heart disease: Insights by combining cardiopulmonary exercise testing with stress echo. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sugimoto T, Bandera F, Generati G, Alfonzetti E, Tufaro V, Guazzi M. P4409The relation between left atrial functions and ventilatory insufficiency during exercise in left heart disease: a stress echo/gas exchange analysis during exercise. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sugimoto T, Bandera F, Generati G, Alfonzetti E, Tufaro V, Guazzi M. P5622Left atrial stiffness phenotypes left heart diseases of different origin and left ventricular ejection fraction: insights by combining cardiopulmonary exercise testing with stress echo. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sugimoto T, Paris E, Wakita T, Terashima K, Yokoya T, Barinov A, Kajitani J, Higashinaka R, Matsuda TD, Aoki Y, Mizokawa T, Saini NL. Metallic phase in stoichiometric CeOBiS 2 revealed by space-resolved ARPES. Sci Rep 2018; 8:2011. [PMID: 29386537 PMCID: PMC5792495 DOI: 10.1038/s41598-018-20351-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/16/2018] [Indexed: 11/29/2022] Open
Abstract
Recently CeOBiS2 system without any fluorine doping is found to show superconductivity posing question on its origin. Using space resolved ARPES we have found a metallic phase embedded in the morphological defects and at the sample edges of stoichiometric CeOBiS2. While bulk of the sample is semiconducting, the embedded metallic phase is characterized by the usual electron pocket at X point, similar to the Fermi surface of doped BiS2-based superconductors. Typical size of the observed metallic domain is larger than the superconducting correlation length of the system suggesting that the observed superconductivity in undoped CeOBiS2 might be due to this embedded metallic phase at the defects. The results also suggest a possible way to develop new systems by manipulation of the defects in these chalcogenides with structural instability.
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Ikeda K, Eto F, Hayashi M, Tachiyama K, Ishibashi H, Sugimoto T, Fujii H, Agari D, Kurokawa K, Yamawaki T. NK/T cell lymphoma initially manifested with myositis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tsukizawa Y, Muguruma K, Hayashi M, Eto F, Tachiyama K, Ishibashi H, Sugimoto T, Fujii H, Agari D, Kurokawa K, Yamawaki T. Efficacy of immunotherapy in retinal vasculopathy with cerebral leukodystrophy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Muguruma K, Kitamura T, Fukuda T, Takebayashi Y, Kuga J, Sugimoto T. Investigating effectiveness of DaTView® and DaTQUANT® using LEUHR-FB in Parkinson's disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fujii H, Kurokawa K, Hayashi M, Eto F, Tachiyama K, Ishibashi H, Sugimoto T, Agari D, Sonoo M, Yamawaki T. Clinical features and tibial nerve somatosensory evoked potential findings in patients with neuromyelitis optica spectrum disorder. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sugimoto T, Ochi K, Kohriyama T, Hayashi M, Tachiyama K, Ishibashi H, Fujii H, Kurokawa K, Yamawaki T, Matsumoto M, Maruyama H. Long term course and malignancy as a prognostic factor of chronic inflammatory demyelinating polyneuropathy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sugimoto T, Bandera F, Generati G, Alfonzetti E, Tufaro V, Guazzi M. P6028The role of mitral regurgitation of either primary and secondary origin on left atrial dynamics during exercise: insights from exercise echocardiography combined with gas exchange analysis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sugimoto T, Bandera F, Generati G, Alfonzetti E, Tufaro V, Guazzi M. 1246The relation between left atrial functions and right ventricular to pulmonary circulation uncoupling during exercise: insights by combining cardiopulmonary exercise testing with stress echo. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.1246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Murata S, Sawa R, Nakatsu N, Saito T, Sugimoto T, Nakamura R, Misu S, Ueda Y, Ono R. Association between chronic musculoskeletal pain and executive function in community-dwelling older adults. Eur J Pain 2017; 21:1717-1722. [DOI: 10.1002/ejp.1083] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2017] [Indexed: 11/10/2022]
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Deguchi T, Yabuuchi T, Ando R, Ichikawa H, Sugimoto T, Takano-Yamamoto T. Increase of Galanin in Trigeminal Ganglion during Tooth Movement. J Dent Res 2016; 85:658-63. [PMID: 16798869 DOI: 10.1177/154405910608500715] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
It is known that nerve fibers containing neuropeptides such as galanin increase in the periodontal ligament during experimental tooth movement. However, the origin of galanin-containing nerve fibers in the periodontal ligament remains unclear. This study was conducted to examine our hypothesis that the increased galanin nerve fibers have a sensory neuronal origin, and that the peptide is associated with pain transmission and/or periodontal ligament remodeling during experimental tooth movement. In control rats, galanin-immunoreactive trigeminal ganglion cells were very rare and were observed predominantly in small ganglion cells. After 3 days of experimental tooth movement, galanin-immunoreactive trigeminal ganglion cells significantly increased, and the most marked increase was observed at 5 days after experimental tooth movement. Furthermore, their cell size spectrum also significantly changed after 3 and 5 days of movement: Medium-sized and large trigeminal ganglion cells began expressing, and continued to express, galanin until 14 days after experimental tooth movement. These findings suggest that the increase of galanin in the periodontal ligament during experimental tooth movement at least partially originates from trigeminal ganglion neurons and may play a role in pain transmission and/or periodontal remodeling.
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Shiraki M, Ueda S, Sugimoto T, Kuroda T, Nakamura T. Treatment responses with once-weekly teriparatide therapy for osteoporosis. Osteoporos Int 2016; 27:3057-62. [PMID: 27234671 PMCID: PMC5042992 DOI: 10.1007/s00198-016-3640-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 05/13/2016] [Indexed: 11/11/2022]
Abstract
UNLABELLED Monitoring bone mineral density is useful to assess treatment response for osteoporosis, but it does not always reflect fracture prevention. Two types of bone mineral density thresholds were used to analyze data from a once-weekly teriparatide trial, and they appear to be useful indicators of treatment success for osteoporosis. INTRODUCTION This study aimed to clarify whether the criteria of treatment response could be used to evaluate treatment success with once-weekly teriparatide. METHODS The data of subjects whose lumbar or femoral neck bone mineral density (BMD) was measured in the TOWER study were included. The least significant change (LSC) and the absolute change were used as the criteria for judgment of treatment success. The correlation between the incidence of fractures and the treatment response was also assessed. RESULTS There was no significant difference in baseline characteristics between the placebo and teriparatide groups. Once-weekly teriparatide therapy for 72 weeks showed treatment success in 79.2 % of the subjects for lumbar BMD and 44.1 % for femoral neck BMD by LSC and in 50.5 and 39.6 % by absolute change, respectively. A lower incidence of vertebral fracture was observed in patients who achieved treatment success for lumbar BMD. With the LSC, some treatment success was observed in the early phase of treatment, and it increased with treatment duration. CONCLUSIONS It appears that the LSC could be used as a surrogate efficacy indicator at an earlier stage of treatment, and the absolute criterion of -2.5SD was confirmed as a useful marker of long-term treatment success.
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Yoshioka T, Sugimoto T, Kinoshita N, Shimazu T, Hiraide A, Kuwagata Y. Effects of Concentration Reduction and Partial Replacement of Paraquat by Diquat on Human Toxicity: A Clinical Survey. Hum Exp Toxicol 2016; 11:241-5. [PMID: 1354970 DOI: 10.1177/096032719201100401] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Paraquat poisoning was studied in 174 patients over a 12-month period when a new, low concentration paraquat product (4.5% w/v paraquat ion mixed with 4.5% w/v diquat ion; 6 3 cases) replaced the original high concentration paraquat product (20% w/v paraquat ion only; 111 cases). In both groups approximately 60% of the patients died from circulatory failure accompanied by multiple organ failure within a week of ingesting the products. However, a remarkable reduction in late deaths from respiratory failure was noted in the new product group (17.1% vs 6.3%). This was reflected in this group's improved survival (23.4% vs 34.9%). The improvement in survival seems to be attributable to the dilution of paraquat with diquat which seems to have a different toxicological profile to paraquat.
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Tanaka K, Kanazawa I, Sugimoto T. Elevated Serum Pentosidine and Decreased Serum IGF-I Levels are Associated with Loss of Muscle Mass in Postmenopausal Women with Type 2 Diabetes Mellitus. Exp Clin Endocrinol Diabetes 2015; 124:163-6. [PMID: 26575120 DOI: 10.1055/s-0035-1565103] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Advanced glycation end-products (AGEs) play important roles in the progression of diabetic complications. Although sarcopenia is recently recognized as another complication associated with diabetes mellitus, its mechanism still remains unclear. In this study, we investigated the relationship between serum levels of pentosidine, which is one of AGEs, and insulin-like growth factor-I (IGF-I) vs. skeletal muscle mass by whole body dual-energy x-ray absorptiometry in 133 postmenopausal women with type 2 diabetes. Relative skeletal muscle mass index (RSMI) was calculated by following formula; appendicular skeletal muscle mass divided by height in meters squared. Simple correlation analyses showed that serum pentosidine levels were significantly and negatively correlated with muscle mass of legs (r=-0.21, p=0.017) and RSMI (r=-0.18, p=0.022), and that IGF-I was significantly and positively correlated with muscle mass of arms and legs (r=0.23, p=0.008 and r=0.30, p=0.001, respectively) as well as RSMI (r=0.20, p=0.022). Moreover, after adjusting for age, duration of diabetes, serum creatinine, HbA1c, and IGF-I, pentosidine was significantly and negatively associated with RSMI (β=-0.27, p=0.018) and marginally with muscle mass of legs (β=-0.18, p=0.071). The associations between IGF-I and indices of muscle mass such as arms, legs and RSMI were still significant after additional adjustment for pentosidine (p=0.016, 0.019 and 0.021, respectively). These findings indicate that increased serum pentosidine and decreased IGF-I are independent risk factors for loss of muscle mass in postmenopausal women with type 2 diabetes.
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Sugimoto T, Kobayashi M, Adachi Y. Orthokinetic aggregation of charged colloidal particles in the presence of repulsive double layer force: A trajectory analysis with the solution of non-linear Poisson–Boltzmann equation. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.07.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Harvey NC, Kanis JA, Odén A, Nakamura T, Shiraki M, Sugimoto T, Kuroda T, Johansson H, McCloskey EV. Efficacy of weekly teriparatide does not vary by baseline fracture probability calculated using FRAX. Osteoporos Int 2015; 26:2347-53. [PMID: 26092062 PMCID: PMC4532707 DOI: 10.1007/s00198-015-3129-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 03/17/2015] [Indexed: 10/27/2022]
Abstract
UNLABELLED The aim of this study was to determine the efficacy of once-weekly teriparatide as a function of baseline fracture risk. Treatment with once-weekly teriparatide was associated with a statistically significant 79 % decrease in vertebral fractures, and in the cohort as a whole, efficacy was not related to baseline fracture risk. INTRODUCTION Previous studies have suggested that the efficacy of some interventions may be greater in the segment of the population at highest fracture risk as assessed by the FRAX® algorithms. The aim of the present study was to determine whether the antifracture efficacy of weekly teriparatide was dependent on the magnitude of fracture risk. METHODS Baseline fracture probabilities (using FRAX) were computed from the primary data of a phase 3 study (TOWER) of the effects of weekly teriparatide in 542 men and postmenopausal women with osteoporosis. The outcome variable comprised morphometric vertebral fractures. Interactions between fracture probability and efficacy were explored by Poisson regression. RESULTS The 10-year probability of major osteoporotic fractures (without BMD) ranged from 7.2 to 42.2 %. FRAX-based hip fracture probabilities ranged from 0.9 to 29.3 %. Treatment with teriparatide was associated with a 79 % (95 % CI 52-91 %) decrease in vertebral fractures assessed by semiquantitative morphometry. Relative risk reductions for the effect of teriparatide on the fracture outcome did not change significantly across the range of fracture probabilities (p = 0.28). In a subgroup analysis of 346 (64 %) participants who had FRAX probabilities calculated with the inclusion of BMD, there was a small but significant interaction (p = 0.028) between efficacy and baseline fracture probability such that high fracture probabilities were associated with lower efficacy. CONCLUSION Weekly teriparatide significantly decreased the risk of morphometric vertebral fractures in men and postmenopausal women with osteoporosis. Overall, the efficacy of teriparatide was not dependent on the level of fracture risk assessed by FRAX in the cohort as a whole.
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Mizuguchi Y, Paris E, Sugimoto T, Iadecola A, Kajitani J, Miura O, Mizokawa T, Saini NL. The effect of RE substitution in layered REO(0.5)F(0.5)BiS2: chemical pressure, local disorder and superconductivity. Phys Chem Chem Phys 2015; 17:22090-6. [PMID: 26234627 DOI: 10.1039/c5cp03750f] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have studied the effect of RE substitution on the structure and the local atomic disorder in REO0.5F0.5BiS2 (RE = rare-earth) to understand their correlation with the bulk superconductivity in these materials. The mean RE size, affecting the chemical pressure, has been varied in two series namely Ce1-xNdxO0.5F0.5BiS2 and Nd1-ySmyO0.5F0.5BiS2. The lattice parameters evolve anomalously, showing an anisotropic shrinkage (elongation) of the c-axis (a-axis) to an isotropic expansion of the lattice with increasing mean RE size. The Bi L3-edge extended X-ray absorption fine structure (EXAFS) measurements are performed to investigate local displacements in the BiS2 lattice, revealing a large disorder and a sharp boundary between the Ce-containing and Sm-containing series with a distinct local structure. The results suggest that the bulk superconductivity in REO0.5F0.5BiS2 is correlated with anomalous atomic displacements in the Bi-S1 network, likely to be a combined effect of active Bi 6s electronic states and a possible Jahn-Teller-like instability of the Bi 6px/6py electrons.
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Murata S, Nakatsu N, Sawa R, Misu S, Ueda Y, Saito T, Sugimoto T, Nakamura R, Ono R. The association of pain intensity and fear of pain with executive function in community-dwelling older adults with chronic pain. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.2056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tsuboi Y, Sugimoto T, Nakatsu N, Sawa R, Saito T, Nakamura R, Murata S, Asano M, Isa T, Ebina A, Kondo Y, Hirai H, Naruse F, Ono R. The association between the disability for low back pain and metabolic syndrome in care workers and nurses. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sugimoto T, Matsumoto T, Hosoi T, Miki T, Gorai I, Yoshikawa H, Tanaka Y, Tanaka S, Fukunaga M, Sone T, Nakano T, Ito M, Matsui S, Yoneda T, Takami H, Watanabe K, Osakabe T, Okubo N, Shiraki M, Nakamura T. Three-year denosumab treatment in postmenopausal Japanese women and men with osteoporosis: results from a 1-year open-label extension of the Denosumab Fracture Intervention Randomized Placebo Controlled Trial (DIRECT). Osteoporos Int 2015; 26:765-74. [PMID: 25403903 DOI: 10.1007/s00198-014-2964-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 10/31/2014] [Indexed: 12/31/2022]
Abstract
SUMMARY A 12-month extension phase of DIRECT in Japanese subjects with osteoporosis showed that total 3 years of denosumab treatment in Japanese postmenopausal women and men with osteoporosis was associated with low fracture rates, persistent bone turnover marker (BTM) reductions, continuous bone mineral density (BMD) increases, and a favorable overall benefit/risk profile. INTRODUCTION The DIRECT trial demonstrated that 2 years of treatment with denosumab 60 mg subcutaneously every 6 months significantly reduced the incidence of vertebral fracture compared to placebo in Japanese postmenopausal women and men with osteoporosis. The purpose of this study is to evaluate the efficacy and safety of denosumab treatment for up to 3 years. METHODS This study includes a 2-year randomized, double-blind, placebo-controlled phase and a 1-year open-label extension phase in which all subjects received denosumab. The data correspond to 3 years of denosumab treatment in subjects who received denosumab (long-term group) and 1 year of denosumab treatment in subjects who received placebo (cross-over group) in the double-blind phase. RESULTS Eight hundred and ten subjects who completed the double-blind phase enrolled into the extension phase, and 775 subjects completed the study. All subjects received denosumab with daily supplements of calcium and vitamin D. The cumulative 36-month incidences of new or worsening vertebral fractures and new vertebral fractures were 3.8 and 2.5 %, respectively, in the long-term group. In this group, the BMD continued to increase, and the reduction in BTMs was maintained. In the cross-over group, comparable BMD increases and BTMs reductions to those of in their first year of the long-term group were confirmed. Adverse events did not show a notable increase with long-term denosumab administration. One event of osteonecrosis of the jaw occurred in the cross-over group. CONCLUSIONS Three-year denosumab treatment in Japanese subjects with osteoporosis showed a favorable benefit/risk profile.
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