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Igarashi S, Kasukawa Y, Nozaka K, Tsuchie H, Abe K, Saito H, Shoji R, Kasama F, Harata S, Okamoto K, Oya K, Miyakoshi N. Teriparatide and etelcalcetide improve bone, fibrosis, and fat parameters in chronic kidney disease model rats. Osteoporos Sarcopenia 2023; 9:121-130. [PMID: 38374820 PMCID: PMC10874735 DOI: 10.1016/j.afos.2023.11.002] [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: 09/05/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 02/21/2024] Open
Abstract
Objectives Chronic kidney disease (CKD) complicated by secondary hyperparathyroidism (SHPT) is associated with an increased risk of fragility fractures. Etelcalcetide (EC) is a treatment for SHPT that reduces serum parathyroid hormone (PTH) levels. However, the effects of combined treatment with osteoporosis drugs such as teriparatide (TPTD) remain unclear. This study investigates the combined effects of EC and TPTD on bone in CKD model rats. Methods The CKD model was established in 8-week-old male Wistar rats by feeding them a 0.75% adenine diet for 4 weeks. At 20 weeks of age, the rats were divided into 4 groups (N = 9-10 in each group): CKD group (vehicle administration), TPTD group (30 μg/kg, 3 times/week), EC group (0.6 mg/kg, daily), and Comb group (TPTD and EC combined). EC was injected for 12 weeks starting at 20 weeks of age, and TPTD was injected for 8 weeks starting at 24 weeks of age. After treatment, the followings were evaluated: bone mineral density, bone strength, biochemical tests, bone and fat histomorphometry, and micro-computed tomography. Results In CKD model rats, the combination of EC and TPTD was more effective in increasing cortical bone thickness and bone strength and inhibiting porosity. In addition, the combined treatment decreased bone marrow adiposity and fibrosis, and it increased bone mass and improved bone microstructure in trabecular bone. Conclusions With the observed benefits such as improved bone mass, bone strength, structural properties, and bone marrow adiposity, combination therapy may be a potential way to improve bone fragility in CKD.
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Affiliation(s)
- Shun Igarashi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Yuji Kasukawa
- Department of Rehabilitation Medicine, Akita University Hospital, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Koji Nozaka
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Hiroyuki Tsuchie
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Kazunobu Abe
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Hikaru Saito
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Ryo Shoji
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Fumihito Kasama
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Shuntaro Harata
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Kento Okamoto
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Keita Oya
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Naohisa Miyakoshi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
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Harata S, Kasukawa Y, Nozaka K, Tsuchie H, Shoji R, Igarashi S, Kasama F, Oya K, Okamoto K, Miyakoshi N. Effects of bisphosphonates and treadmill exercise on bone and kidney in adenine-induced chronic kidney disease rats. J Bone Miner Metab 2023; 41:785-796. [PMID: 37897671 DOI: 10.1007/s00774-023-01471-6] [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] [Received: 05/13/2023] [Accepted: 09/22/2023] [Indexed: 10/30/2023]
Abstract
INTRODUCTION The increasing prevalence of osteoporosis and chronic kidney disease (CKD) due to the aging of society has highlighted the need for development of effective treatments for elderly patients. This study examined whether the combination of treadmill exercise therapy and alendronate (ALN) can improve bone mineral density (BMD) and bone strength without worsening renal function in adenine-induced CKD model rats. MATERIALS AND METHODS 8-week-old male Wistar rats (n = 70) were divided into experimental groups based on the treatment protocol, i.e., non-CKD (control), vehicle only (CKD), ALN only, exercise only, and combined ALN plus exercise. A 0.75% adenine diet was used to induce CKD. Groups were killed at either 20 or 30 weeks of age. Comprehensive assessments included serum and urine biochemistry tests, renal histology, bone histomorphometry, BMD measurement, micro-computed tomography examinations, and biomechanical testing. RESULTS Blood biochemistry tests, urine analyses and histological evaluations of the kidney demonstrated that ALN treatment did not worsen renal function or kidney fibrosis in moderate-stage CKD model rats. Both ALN and treadmill exercise significantly suppressed bone resorption (p < 0.05-p < 0.01). Moreover, ALN monotherapy and combined ALN and treadmill exercise significantly improved BMD of the lumbar spine and femur, bone microstructure, and trabecular bone strength (p < 0.05-p < 0.01). Treadmill exercise was also shown to decrease cortical porosity at the mid-diaphysis of the femur and improve kidney fibrosis. CONCLUSION The combination of ALN and treadmill exercise is effective in improving BMD, the microstructure of trabecular and cortical bone, and bone strength, without compromising renal function in adenine-induced CKD model rats.
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Affiliation(s)
- Shuntaro Harata
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Yuji Kasukawa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan.
| | - Koji Nozaka
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Hiroyuki Tsuchie
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Ryo Shoji
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Shun Igarashi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Fumihito Kasama
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Keita Oya
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Kento Okamoto
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Naohisa Miyakoshi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
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Abe K, Miyakoshi N, Kasukawa Y, Nozaka K, Tsuchie H, Sato C, Saito H, Shoji R, Shimada Y. Effects of teriparatide and low-intensity aerobic exercise on osteopenia in type 2 diabetes mellitus rats. J Bone Miner Metab 2022; 40:229-239. [PMID: 35089442 DOI: 10.1007/s00774-021-01289-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 11/10/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION In patients with type 2 diabetes mellitus (T2DM), bone fragility increases fracture risk. Teriparatide (TPTD) improves bone strength, and exercise therapy suppresses blood glucose levels in T2DM. In this study, the combined effects of TPTD and exercise therapy on trabecular and cortical bone were examined in advanced T2DM model rats. MATERIALS AND METHODS Thirty-week-old Otsuka Long-Evans Tokushima Fatty rats were divided into four groups (n = 9-10 in each group at two time points): Cont group (vehicle-treated control), TPTD group (TPTD 30 μg/kg injected subcutaneously, 3 times/week), Exe group (treadmill exercise, 10 m/min, 60 min/day, 5 times/week), and Comb group (TPTD-treated and treadmill exercise combined). Five and 10 weeks after treatment, bone mineral density (BMD), bone strength, and bone micro-architecture were measured. RESULTS TPTD and combined treatment significantly increased BMDs of the lumbar spine and femur compared to the Cont group (p < 0.05 to p < 0.01). In the three-point bending test of the femur, only combined treatment increased the maximum load at 5 weeks compared with the Cont and Exe groups (p < 0.01). In the compression test of the distal femoral metaphysis, both TPTD and combined treatment increased the trabecular bone strength compared with the Cont and Exe groups (p < 0.05 to p < 0.01). Although TPTD and combined treatment improved the micro-architecture of trabecular bone (p < 0.05 to p < 0.01), only combined treatment improved the micro-structures of cortical bone from 5 weeks of treatment (p < 0.05 to p < 0.01). CONCLUSION The combination of TPTD and treadmill exercise increased BMD and trabecular and cortical bone strength of the femur with improved micro-architecture in T2DM model rats.
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Affiliation(s)
- Kazunobu Abe
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Naohisa Miyakoshi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan.
| | - Yuji Kasukawa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Koji Nozaka
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Hiroyuki Tsuchie
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Chiaki Sato
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Hikaru Saito
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Ryo Shoji
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Yoichi Shimada
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
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Saito H, Miyakoshi N, Kasukawa Y, Nozaka K, Tsuchie H, Sato C, Abe K, Shoji R, Shimada Y. Analysis of bone in adenine-induced chronic kidney disease model rats. Osteoporos Sarcopenia 2022; 7:121-126. [PMID: 35005247 PMCID: PMC8714473 DOI: 10.1016/j.afos.2021.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/13/2021] [Accepted: 11/03/2021] [Indexed: 10/25/2022] Open
Abstract
Objectives The purpose of this study is to investigate the stage of chronic kidney disease (CKD) in adenine-induced CKD model rats by serum analyses, and to examine bone mineral density (BMD), bone strength, and microstructure of trabecular and cortical bone in these rats. Methods Eight-week-old, male Wistar rats (n = 42) were divided into 2 groups: those fed a 0.75% adenine diet for 4 weeks until 12 weeks of age to generate CKD model rats (CKD group); and sham rats. The CKD and sham groups were sacrificed at 12, 16, and 20 weeks of age (n = 7 in each group and at 12, 16, and 20 weeks), and various parameters were evaluated, including body weight, renal wet weight, muscle wet weight, renal histology, biochemical tests, BMD, biomechanical testing, and micro-computed tomography (CT). The parameters were compared between the 2 groups at the various time points. Results In the CKD model rats, at 20 weeks of age, serum creatinine, phosphorus, and intact-PTH levels were elevated, and serum calcium levels were normal, indicating that the CKD was stage IV and associated with secondary hyperparathyroidism. Decreased BMDs of the whole body and the femur were observed as bone changes, and micro-CT analysis showed deterioration of bone microstructure of the cortical bone that resulted in decreased bone strength in the cortical and trabecular bone. Conclusions These CKD model rats showed stage IV CKD and appear appropriate for evaluating the effects of several treatments for CKD-related osteoporosis and mineral bone disorder.
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Affiliation(s)
- Hikaru Saito
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Naohisa Miyakoshi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Yuji Kasukawa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Koji Nozaka
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Hiroyuki Tsuchie
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Chiaki Sato
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Kazunobu Abe
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Ryo Shoji
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
| | - Yoichi Shimada
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan
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Sato C, Miyakoshi N, Kasukawa Y, Nozaka K, Tsuchie H, Nagahata I, Yuasa Y, Abe K, Saito H, Shoji R, Shimada Y. Teriparatide and exercise improve bone, skeletal muscle, and fat parameters in ovariectomized and tail-suspended rats. J Bone Miner Metab 2021; 39:385-395. [PMID: 33392725 DOI: 10.1007/s00774-020-01184-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 11/17/2020] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Although teriparatide (TPTD) and exercise may improve osteoporosis, muscle atrophy, and fat metabolism during ageing, the effects of treatment with a combination of TPTD and exercise on these factors remain unclear. Therefore, this study examined the effects of TPTD and exercise on bone, skeletal muscle, and fat in ovariectomized and tail-suspended rats. MATERIALS AND METHODS Seven-month-old female Wistar rats were ovariectomized and subjected to tail suspension. The rats were then randomized into one of the following four groups (n = 20/group) after 4 weeks: control group, treated with TPTD vehicle and no exercise; TPTD group (30 µg/kg TPTD, 3 days/week); Exercise group (treadmill at 12 m/min, 60 min/day, 5 days/week); and Combined group treated with TPTD and treadmill exercise. After 1 and 8 weeks of treatment, bone, skeletal muscle, and fat tissue parameters were evaluated. RESULTS TPTD improved bone mineral density (BMD), bone structure, bone strength at the femoral metaphysis, and the percentage of skeletal muscle mass, and decreased the percentage of fat mass and the adipose volume in the bone marrow. Treadmill exercise increased BMD, bone strength of cancellous bone, and the percentage of skeletal muscle mass, and decreased the percentage of fat mass as seen on dual-energy X-ray absorptiometry. Furthermore, combined treatment significantly affected BMD, bone structure, and bone strength of cortical bone at the femoral diaphysis. CONCLUSION TPTD or treadmill exercise improved bone, skeletal muscle, and fat mass. Combination therapy with TPTD and exercise had synergistic effects on BMD, structure, and bone strength in ovariectomized, tail-suspended rats.
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Affiliation(s)
- Chiaki Sato
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Naohisa Miyakoshi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan.
| | - Yuji Kasukawa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Koji Nozaka
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Hiroyuki Tsuchie
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Itsuki Nagahata
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Yusuke Yuasa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Kazunobu Abe
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Hikaru Saito
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Ryo Shoji
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Yoichi Shimada
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
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Oakes B, Bolia IK, Weber AE, Petrigliano FA. Vitamin C in orthopedic practices: Current concepts, novel ideas, and future perspectives. J Orthop Res 2021; 39:698-706. [PMID: 33300201 DOI: 10.1002/jor.24947] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 02/04/2023]
Abstract
Vitamin C (ascorbic acid), is an important antioxidant that has been applied broadly in the field of orthopaedics. Current research on vitamin C examines the molecule's role in bone and tendon physiology, as well as joint replacement and Postoperative pain. Most laboratory and human studies associate the use of vitamin C with improved bone health and tendon healing. Recent literature moderately supports the use of vitamin C to improve functional outcomes, decreased postoperative pain, and prevent complex regional pain syndrome following orthopaedic procedures. The perioperative use of vitamin C in patients undergoing joint replacement surgery and anterior cruciate ligament reconstruction is still under investigation. Overall, there is need for high-quality human trials to confirm whether vitamin C can potentiate the outcomes of orthopaedic procedures and to determine optimal dosage and means of administration to maximize its proposed benefits. The purpose of this review was to summarize the application of vitamin C in orthopaedic practices and to identify potential areas for future study.
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Affiliation(s)
- Bennett Oakes
- Department of Orthopaedic Surgery, University of Southern California Los Angeles, Los Angeles, California, USA
| | - Ioanna K Bolia
- Department of Orthopaedic Surgery, University of Southern California Los Angeles, Los Angeles, California, USA
| | - Alexander E Weber
- Department of Orthopaedic Surgery, University of Southern California Los Angeles, Los Angeles, California, USA
| | - Frank A Petrigliano
- Department of Orthopaedic Surgery, University of Southern California Los Angeles, Los Angeles, California, USA
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Rocha DR, Nery JF, Furini LN, Constantino CJL, Eller LKW, Nai GA, Nakagaki WR. Effects of consumption of contaminated feed with 2,4-dichlorophenoxyacetic acid (2,4-D) on the rat tibia: analysis by Raman spectroscopy and mechanical properties. Lasers Med Sci 2020; 35:1703-1709. [DOI: 10.1007/s10103-020-02961-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/10/2020] [Indexed: 11/29/2022]
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Yuasa Y, Miyakoshi N, Kasukawa Y, Nagahata I, Akagawa M, Ono Y, Sato C, Tsuchie H, Nozaka K, Nagasawa H, Hongo M, Shimada Y. Effects of bazedoxifene and low-intensity aerobic exercise on bone and fat parameters in ovariectomized rats. J Bone Miner Metab 2020; 38:179-187. [PMID: 31587108 DOI: 10.1007/s00774-019-01045-5] [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: 05/13/2019] [Accepted: 08/29/2019] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Postmenopausal osteoporosis and dyslipidemia are well-known skeletal and metabolic changes in middle-aged women. We investigated the effects of combined treatments with a selective estrogen receptor modulator (SERM) and exercise on bone and fat parameters in ovariectomized (OVX) rats. MATERIALS AND METHODS Sixteen-week-old female Sprague-Dawley rats underwent bilateral ovariectomy, and rats were randomized to BZA (bazedoxifene at 0.3 mg/kg/day), Exe (treadmill exercise at 12-15 m/min, 60 min/day, 5 days/week), Comb (BZA and Exe), and Cont (control treated with vehicle and no exercise) groups 8 weeks after ovariectomy. After 4 or 8 weeks of treatment, bone mineral density (BMD) of the total femur and lumbar spine and whole-body percentage fat mass were determined by dual-energy X-ray absorptiometry, and mechanical testing of the femoral shaft, and bone and fat histomorphometric analyses of the proximal tibia were performed. RESULTS Treadmill exercise had decreased bone marrow adipocytes from 4 weeks of treatment and whole-body percentage fat mass at 8 weeks. BZA increased BMD at the lumbar spine and decreased the whole-body percentage fat mass from 4 weeks and bone marrow adipocytes at 8 weeks. Combination therapy increased BMD for the lumbar spine and decreased bone marrow adipocytes and whole-body percentage fat mass from 4 weeks. CONCLUSION Combination therapy with BZA and exercise appears effective to improve bone and fat parameters in OVX rats.
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Affiliation(s)
- Yusuke Yuasa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Naohisa Miyakoshi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan.
| | - Yuji Kasukawa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Itsuki Nagahata
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Manabu Akagawa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Yuichi Ono
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Chiaki Sato
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Hiroyuki Tsuchie
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Koji Nozaka
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Hiroyuki Nagasawa
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Michio Hongo
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Yoichi Shimada
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
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Hasegawa T, Miyamoto-Takasaki Y, Abe M, Qiu Z, Yamamoto T, Yoshida T, Yoshino H, Hongo H, Yokoyama A, Sasaki M, Kuroshima S, Hara K, Kobayashi M, Akiyama Y, Maeda T, Luiz de Freitas PH, Li M, Amizuka N. Histochemical examination on principal collagen fibers in periodontal ligaments of ascorbic acid-deficient ODS-od/od rats. Microscopy (Oxf) 2019; 68:349-358. [PMID: 31271212 DOI: 10.1093/jmicro/dfz021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 04/24/2019] [Indexed: 12/13/2022] Open
Abstract
In this study, we aimed to clarify the role of ascorbic acid in collagen synthesis in periodontal ligaments using osteogenic disorder Shionogi (ODS)/ShiJcl-od/od rats lacking L-gulonolactone oxidase. These rats cannot synthesize ascorbic acid in vivo. Eight-week-old ODS/ShiJcl-od/od male rats were administered ascorbic acid solution at a concentration of 200 mg/dL (control group, n = 6) or ascorbic acid solution at concentration of 0.3 mg/dL (insufficient group, n = 12). Six rats of the insufficient group were then given with ascorbic acid solution at concentration of 200 mg/dL for additional 3 weeks (rescued group, n = 6), and then, their mandibles were histochemically examined. Consequently, the insufficient group specimens were seen to possess fewer collagen fibers, and silver impregnation revealed numerous fine, reticular fiber-like fibrils branching off from collagen in the periodontal ligaments. In control group, faint immunoreactivities for matrix metalloproteinase (MMP)2 and cathepsin H were seen in the periphery of blood vessels and throughout the ligament, respectively. In contrast, in the insufficient group, intense MMP2-immunoreactivity was observed to be associated with collagen fibrils in the periodontal ligaments, and cathepsin H-immunopositivity was seen in ligamentous cells. The rescued group showed abundant collagen fibers filling the periodontal ligament space. Under transmission electron microscopy, ligamentous fibroblasts incorporated collagen fibrils into tubular endosomes/lysosomes while simultaneously synthesizing collagen fibril bundles. Thus, ascorbic acid insufficiency affected the immunolocalization of cathepsin H and MMP2; however, ligamentous fibroblasts appear to possess the potential to synthesize collagen fibers when supplied with ascorbic acid.
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Affiliation(s)
- Tomoka Hasegawa
- Developmental Biology of Hard Tissue, Graduate School of Dental Medicine and Faculty of Dental Medicine, Hokkaido University, Sapporo Japan
| | - Yukina Miyamoto-Takasaki
- Developmental Biology of Hard Tissue, Graduate School of Dental Medicine and Faculty of Dental Medicine, Hokkaido University, Sapporo Japan
| | - Miki Abe
- Developmental Biology of Hard Tissue, Graduate School of Dental Medicine and Faculty of Dental Medicine, Hokkaido University, Sapporo Japan
| | - Zixuan Qiu
- Developmental Biology of Hard Tissue, Graduate School of Dental Medicine and Faculty of Dental Medicine, Hokkaido University, Sapporo Japan
| | - Tomomaya Yamamoto
- Section of Dentistry, Japan Ground Self-Defense Forces Camp Asaka, Tokyo, Japan
| | - Taiji Yoshida
- School of Dental Medicine, Hokkaido University, Sapporo Japan
| | - Hirona Yoshino
- School of Dental Medicine, Hokkaido University, Sapporo Japan
| | - Hiromi Hongo
- Developmental Biology of Hard Tissue, Graduate School of Dental Medicine and Faculty of Dental Medicine, Hokkaido University, Sapporo Japan
| | - Ayako Yokoyama
- Developmental Biology of Hard Tissue, Graduate School of Dental Medicine and Faculty of Dental Medicine, Hokkaido University, Sapporo Japan.,Gerodontology, Graduate School of Dental Medicine and Faculty of Dental Medicine, Hokkaido University, Sapporo Japan
| | - Muneteru Sasaki
- Department of Applied Prosthodontics, Medical and Dental Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Shinichiro Kuroshima
- Department of Applied Prosthodontics, Medical and Dental Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kuniko Hara
- Pharmacological Evaluation Section, Eisai, Co. Ltd, Tokyo, Japan
| | | | - Yasuhiro Akiyama
- Pharmacological Evaluation Section, Eisai, Co. Ltd, Tokyo, Japan
| | - Takeyasu Maeda
- Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.,Faculty of Dental Medicine, University of Airlangga, Surabaya, Indonesia
| | | | - Minqi Li
- Division of Basic Science of Stomatology, The School of Stomatology, Shandong University, Jinan, China
| | - Norio Amizuka
- Developmental Biology of Hard Tissue, Graduate School of Dental Medicine and Faculty of Dental Medicine, Hokkaido University, Sapporo Japan
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