Abstract
Summary
Trends toward more favorable improvement of the cortical bone parameters by once-weekly (56.5 μg once a week) and twice-weekly teriparatide (28.2 μg twice a week), and that of the trabecular bone parameters by once-daily (1/D) teriparatide (20 μg/day once a day) were shown.
Purpose
To examine the effects of differences in the amount of teriparatide (TPTD) per administration and its dosing frequency on the bone structure in the proximal femur by dual-energy X-ray absorptiometry (DXA)-based 3D-modeling (3D-SHAPER software).
Methods
This was a multicenter retrospective study. Patients aged 50 years or older with primary osteoporosis who continuously received once-/twice-weekly (1・2/W, n = 60) or 1/D TPTD (n = 14) administration for at least one year were included in the study. Measurement regions included the femoral neck (FN), trochanter (TR), femoral shaft (FS), and total proximal hip (TH). Concurrently, the bone mineral density (BMD) and Trabecular Bone Score (TBS) were measured.
Results
The cross-sectional area, cross-sectional moment of inertia, and section modulus in the FS were significantly improved in the 1・2/W TPTD group, as compared to the 1/D TPTD group. However, significant improvement of the cortical thickness and buckling ratio in the FN was observed in the 1/D TPTD group, as compared to the 1・2/W TPTD group. Trabecular BMD values in the FS and TH were significantly increased in the 1/D TPTD group, as compared to the 1・2/W TPTD group, while the cortical BMD values in the TR, FS, and TH were significantly increased in the 1・2/W TPTD group, as compared to the 1/D TPTD group.
Conclusion
Trends toward more favorable improvement of the cortical bone by 1・2/W TPTD and that of the trabecular bones by 1/D TPTD were observed.
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Data Availability Statement
The biochemical data used to support the findings of this study belong to the study team. For confidentiality reasons, the datasets are not publicly available. However, the datasets can be obtained from the corresponding author with permission from the study team upon reasonable request.
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Acknowledgements
Author and co-authors are indebted to Kiichi Nonaka (TOYO MEDIC CO., LTD.; Tokyo Japan), who provided technical support and analyzed the data, and Keishi Mori (Shido Inc.).
Funding
This study was conducted with financial support from Asahi-Kasei Pharmaceutical Co., Ltd. (Tokyo, Japan).
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards and with the protocol approved by the ethics review committee of Sapporo Maruyama Orthopedic Hospital (approved on October 22, 2021; approval No. 000042). Since it was a retrospective study, for this type of study formal consent is not required. Therefore, the opt-out procedure was used.
Conflict of interest
Junichi Takada received fees for lectures and medical advice from Asahi-Kasei Pharmaceutical Co., Ltd. Nobukazu Okimoto received consulting fees from Asahi-Kasei Pharmaceutical Co., Ltd. And Tei** Pharma Ltd. and received payments for lectures, including speakers’ bureau fees, from Asahi-Kasei Pharmaceutical Co., Ltd., Amgen K. K., Chugai Pharmaceutical Co., Daiichi-Sankyo Co. Ltd., Towa Pharmaceutical Co., Ltd., and Tei** Pharma Ltd. Manabu Tsukamoto received payments for lectures, including speakers’ bureau fees, from Asahi-Kasei Pharmaceutical Co., Ltd. Kousuke Iba holds an endowed chair at the Department of Musculoskeletal Anti-aging Medicine, Sapporo Medical University. Satoshi Ikeda received fees for medical advice from Asahi-Kasei Pharmaceutical Co., Ltd. and fees for lectures from Asahi-Kasei Pharmaceutical Co., Ltd. and Daiichi-Sankyo Co. Ltd.
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Takada, J., Okimoto, N., Tsukamoto, M. et al. Effects of differences in dose and frequency of teriparatide on bone structure in Proximal Femur. – Analysis by DXA-based 3D-modeling (3D-SHAPER Software) –TRIPLE-BONE study (The effects of TeRIParatide preparation on bone mineraL density increase and BONE structure). Arch Osteoporos 19, 55 (2024). https://doi.org/10.1007/s11657-024-01415-1
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DOI: https://doi.org/10.1007/s11657-024-01415-1