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Tang J, Luo Y, Wang Q, Wu J, Wei Y. Stimuli-Responsive Delivery Systems for Intervertebral Disc Degeneration. Int J Nanomedicine 2024; 19:4735-4757. [PMID: 38813390 PMCID: PMC11135562 DOI: 10.2147/ijn.s463939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 05/13/2024] [Indexed: 05/31/2024] Open
Abstract
As a major cause of low back pain, intervertebral disc degeneration is an increasingly prevalent chronic disease worldwide that leads to huge annual financial losses. The intervertebral disc consists of the inner nucleus pulposus, outer annulus fibrosus, and sandwiched cartilage endplates. All these factors collectively participate in maintaining the structure and physiological functions of the disc. During the unavoidable degeneration stage, the degenerated discs are surrounded by a harsh microenvironment characterized by acidic, oxidative, inflammatory, and chaotic cytokine expression. Loss of stem cell markers, imbalance of the extracellular matrix, increase in inflammation, sensory hyperinnervation, and vascularization have been considered as the reasons for the progression of intervertebral disc degeneration. The current treatment approaches include conservative therapy and surgery, both of which have drawbacks. Novel stimuli-responsive delivery systems are more promising future therapeutic options than traditional treatments. By combining bioactive agents with specially designed hydrogels, scaffolds, microspheres, and nanoparticles, novel stimuli-responsive delivery systems can realize the targeted and sustained release of drugs, which can both reduce systematic adverse effects and maximize therapeutic efficacy. Trigger factors are categorized into internal (pH, reactive oxygen species, enzymes, etc.) and external stimuli (photo, ultrasound, magnetic, etc.) based on their intrinsic properties. This review systematically summarizes novel stimuli-responsive delivery systems for intervertebral disc degeneration, shedding new light on intervertebral disc therapy.
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Affiliation(s)
- Jianing Tang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- First Clinic School, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Yuexin Luo
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- First Clinic School, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Qirui Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- First Clinic School, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Juntao Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- First Clinic School, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Yulong Wei
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
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Du X, Liang K, Ding S, Shi H. Signaling Mechanisms of Stem Cell Therapy for Intervertebral Disc Degeneration. Biomedicines 2023; 11:2467. [PMID: 37760908 PMCID: PMC10525468 DOI: 10.3390/biomedicines11092467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/27/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023] Open
Abstract
Low back pain is the leading cause of disability worldwide. Intervertebral disc degeneration (IDD) is the primary clinical risk factor for low back pain and the pathological cause of disc herniation, spinal stenosis, and spinal deformity. A possible approach to improve the clinical practice of IDD-related diseases is to incorporate biomarkers in diagnosis, therapeutic intervention, and prognosis prediction. IDD pathology is still unclear. Regarding molecular mechanisms, cellular signaling pathways constitute a complex network of signaling pathways that coordinate cell survival, proliferation, differentiation, and metabolism. Recently, stem cells have shown great potential in clinical applications for IDD. In this review, the roles of multiple signaling pathways and related stem cell treatment in IDD are summarized and described. This review seeks to investigate the mechanisms and potential therapeutic effects of stem cells in IDD and identify new therapeutic treatments for IDD-related disorders.
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Affiliation(s)
| | | | | | - Haifei Shi
- Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; (X.D.); (K.L.); (S.D.)
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Tang H, Liu Y, Fan Y, Li C. Therapeutic Effects of Low-Intensity Pulsed Ultrasound on Premature Ovarian Insufficiency. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:2377-2387. [PMID: 34088530 DOI: 10.1016/j.ultrasmedbio.2021.04.022] [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: 10/11/2020] [Revised: 02/20/2021] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
We explored the therapeutic effects of low-intensity pulsed ultrasound (LIPUS) on a rat model of ovarian damage induced by cyclophosphamide. A total of 44 female rats with premature ovarian insufficiency induced by cyclophosphamide were randomly divided into two groups (an ultrasound group and a control group); 22 normal rats without premature ovarian insufficiency were also included as a third group. The ultrasound group was treated with LIPUS, while the other two groups received the same treatment but without any power output. We monitored the estrous cycles of all rats. Seven days after treatment, 21 rats were selected to mate with male rats. We then recorded the pregnancy rate along with the number and weight of newborn rats per nest. We collected samples of blood, uterus and ovaries from the remaining 45 rats before they were sacrificed. Compared with the normal group, the control group exhibited disordered estrous cycles, more atretic follicles (p < 0.01), higher levels of serum follicle-stimulating hormone (p < 0.01), fewer other follicles (p < 0.01) and lower serum levels of E2 and anti-Müllerian hormone (p < 0.01). Compared with the control group, the ultrasound group had normal estrous cycles with fewer atretic follicles (p < 0.01), lower levels of serum follicle-stimulating hormone (p < 0.01), more other follicles (p < 0.01) and higher levels of serum E2 (p < 0.01). No significant difference in the levels of serum anti-Müllerian hormone was noted between the control group and the ultrasound group. No significant differences were observed between the three groups with respect to pregnancy rate or the number and weight of newborns per nest (p > 0.05). In conclusion, our data indicate that LIPUS could improve some ovarian functions of rats with premature ovarian insufficiency.
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Affiliation(s)
- Huajun Tang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Yao Liu
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Yijin Fan
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Chengzhi Li
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China.
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Adams MS, Lotz JC, Diederich CJ. In silico feasibility assessment of extracorporeal delivery of low-intensity pulsed ultrasound to intervertebral discs within the lumbar spine. Phys Med Biol 2020; 65:215011. [PMID: 32620003 DOI: 10.1088/1361-6560/aba28d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Low intensity pulsed ultrasound (LIPUS) may have utility for non-invasive treatment of discogenic lower back pain through stimulating, remodeling and accelerating healing of injured or degenerated intervertebral disc (IVD) tissues. This study investigates the feasibility of delivering LIPUS to lumbar IVDs between L2 and S1 spine vertebra using a planar extracorporeal phased array (8 × 8 cm, 1024 elements, 500 kHz). Three 3D anatomical models with heterogenous tissues were generated from patient CT image sets and used in the simulation-based analysis. Time-reversal acoustic modeling techniques were applied to optimize posterior-lateral placement of the array with respect to the body to facilitate energy deposition in discrete target regions spanning the annulus fibrosus and central nucleus of each IVD. Forward acoustic and biothermal simulations were performed with time-reversal optimized array placements and driving amplitude/phase settings to predict LIPUS intensity distributions at target sites and to investigate off-target energy deposition and heating potential. Simulation results demonstrate focal intensity gain of 5-168 across all IVD targets and anatomical models, with greater average intensity gain (>50) and energy localization in posterior, posterolateral, and lateral target sites of IVDs. Localized LIPUS delivery was enhanced in thinner patient anatomies and in the high lumbar levels (L2-L3 and L3-L4). Multiple amplitude/phasing illumination patterns could be sequenced at a fixed array position for larger regional energy coverage in the IVD. Biothermal simulations demonstrated that LIPUS-appropriate exposures of 100 mW cm-2 ISPTA to the target disc region would result in <1 °C global peak temperature elevation for all cases. Hence, simulations suggest that spatially-precise extracorporeal delivery of therapeutically relevant LIPUS doses to discrete regions of lumbar IVDs is feasible and may be useful in clinical management of discogenic back pain.
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Affiliation(s)
- Matthew S Adams
- Thermal Therapy Research Group, Department of Radiation Oncology, University of California San Francisco, 2340 Sutter Street, S341, San Francisco, CA 94115, United States of America
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Chu YC, Lim J, Tseng MC, Wang JL. The responses of nucleus pulposus cells to pressure and ultrasound stimulation. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2020; 148:EL314. [PMID: 33138512 DOI: 10.1121/10.0002138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/19/2020] [Indexed: 06/11/2023]
Abstract
A cellular stimulation device with a pressurized chamber is developed to investigate the effect of ultrasound and pressure fluctuation on nucleus pulposus (NP) cells. The pressurized chamber is designed to emulate the in vivo environment of intervertebral discs, which are under dynamic pressure, and to emulate impact during sports and exercise. Both hydrostatic pressure and ultrasound stimulation increase phosphorylation of ERK (pERK) in NP cells, and promote its translocation into nucleus. This increase in pERK levels might be activated through calcium signaling pathways as intracellular calcium in NP cells was strongly elevated by pressure changes.
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Affiliation(s)
- Ya-Cherng Chu
- Department of Biomedical Engineering, Nation Taiwan University, Taipei, , , ,
| | - Jormay Lim
- Department of Biomedical Engineering, Nation Taiwan University, Taipei, , , ,
| | - Mu-Cyun Tseng
- Department of Biomedical Engineering, Nation Taiwan University, Taipei, , , ,
| | - Jaw-Lin Wang
- Department of Biomedical Engineering, Nation Taiwan University, Taipei, , , ,
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Qu Z, Zhang F, Chen W, Lin T, Sun Y. High-dose TGF-β1 degrades human nucleus pulposus cells via ALK1-Smad1/5/8 activation. Exp Ther Med 2020; 20:3661-3668. [PMID: 32855718 PMCID: PMC7444386 DOI: 10.3892/etm.2020.9088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 07/01/2020] [Indexed: 01/07/2023] Open
Abstract
Transforming growth factor β1 (TGF-β1) can promote the proliferation and differentiation of intervertebral disc cells and participates in its repair process. However, whether TGF-β1 engages in the process of disc degeneration has not yet been fully elucidated. The present study aimed to investigate the function of high-dose TGF-β1 on the metabolism of nucleus pulposus cells (NPCs). TGF-β1 levels in human degenerative intervertebral disc tissues and tumor necrosis factor (TNF)-α-induced degenerative NPCs were analyzed. Furthermore, NPCs were treated with TGF-β1 and inhibitors of TGF-β1 receptors [ALK tyrosine kinase receptor (ALK) 1 and ALK5] to determine the effect of the receptors in the mediation of NPC degeneration. The NPC state was determined by the components of secretory collagen I/II, tissue inhibitor of metalloproteinase-3 (TIMP-3) and matrix metalloproteinase (MMP)-13. The mRNA expression of Smad1/2/3/5/8, the downstream gene of TGF-β1 mediated by ALK, was also measured. Results showed that TGF-β1 and ALK1 were positively associated with the degree of degeneration of NP or NPCs in vitro, but negatively associated with ALK5. Furthermore, high-doses of TGF-β1 suppressed collagen II, but enhanced collagen I, TIMP-3, MMP-13, ALK1/5 and Smad1/2/3/5/8 expression. ALK5 inhibition induced the suppression of Smad2/3 and aggravated high-dose TGF-β1-induced NPC degeneration, as shown by the reduction in collagen II and increase in collagen I, TIMP-3 and MMP-13. By contrast, ALK1 inhibition resulted in Smad1/5/8 suppression and alleviated high-dose TGF-β1-induced NPC degeneration. Taken together, it was concluded that high-doses of TGF-β1 contributed to the degeneration of NPCs via the upregulation of ALK1 and Smad1/5/8.
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Affiliation(s)
- Zhiqiang Qu
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China.,Department of Orthopedics, Tongliao City Hospital, Tongliao, Inner Mongolia 028000, P.R. China
| | - Fengxiang Zhang
- Department of General Surgery, Tongliao City Hospital, Tongliao, Inner Mongolia 028000, P.R. China
| | - Weiwei Chen
- Department of Disinfecting Supply Division, Tongliao City Hospital, Tongliao, Inner Mongolia 028000, P.R. China
| | - Tao Lin
- Department of Disinfecting Supply Division, Tongliao City Hospital, Tongliao, Inner Mongolia 028000, P.R. China
| | - Yongming Sun
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
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Horne DA, Jones PD, Adams MS, Lotz JC, Diederich CJ. LIPUS far-field exposimetry system for uniform stimulation of tissues in-vitro: development and validation with bovine intervertebral disc cells. Biomed Phys Eng Express 2020; 6:035033. [PMID: 33438678 DOI: 10.1088/2057-1976/ab8b26] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Therapeutic Low-intensity Pulsed Ultrasound (LIPUS) has been applied clinically for bone fracture healing and has been shown to stimulate extracellular matrix (ECM) metabolism in numerous soft tissues including intervertebral disc (IVD). In-vitro LIPUS testing systems have been developed and typically include polystyrene cell culture plates (CCP) placed directly on top of the ultrasound transducer in the acoustic near-field (NF). This configuration introduces several undesirable acoustic artifacts, making the establishment of dose-response relationships difficult, and is not relevant for targeting deep tissues such as the IVD, which may require far-field (FF) exposure from low frequency sources. The objective of this study was to design and validate an in-vitro LIPUS system for stimulating ECM synthesis in IVD-cells while mimicking attributes of a deep delivery system by delivering uniform, FF acoustic energy while minimizing reflections and standing waves within target wells, and unwanted temperature elevation within target samples. Acoustic field simulations and hydrophone measurements demonstrated that by directing LIPUS energy at 0.5, 1.0, or 1.5 MHz operating frequency, with an acoustic standoff in the FF (125-350 mm), at 6-well CCP targets including an alginate ring spacer, uniform intensity distributions can be delivered. A custom FF LIPUS system was fabricated and demonstrated reduced acoustic intensity field heterogeneity within CCP-wells by up to 93% compared to common NF configurations. When bovine IVD cells were exposed to LIPUS (1.5 MHz, 200 μs pulse, 1 kHz pulse frequency, and ISPTA = 120 mW cm-2) using the FF system, sample heating was minimal (+0.81 °C) and collagen content was increased by 2.6-fold compared to the control and was equivalent to BMP-7 growth factor treatment. The results of this study demonstrate that FF LIPUS exposure increases collagen content in IVD cells and suggest that LIPUS is a potential noninvasive therapeutic for stimulating repair of tissues deep within the body such as the IVD.
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Affiliation(s)
- Devante A Horne
- Department of Orthopaedic Surgery, University of California, San Francisco, United States of America. The UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley, and University of California, San Francisco, United States of America. Thermal Therapy Research Group, Radiation Oncology Department, University of California, San Francisco, United States of America
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Chen S, Liu S, Ma K, Zhao L, Lin H, Shao Z. TGF-β signaling in intervertebral disc health and disease. Osteoarthritis Cartilage 2019; 27:1109-1117. [PMID: 31132405 DOI: 10.1016/j.joca.2019.05.005] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 05/02/2019] [Accepted: 05/14/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE This paper aims to provide a comprehensive review of the changing role of transforming growth factor-β (TGF-β) signaling in intervertebral disc (IVD) health and disease. METHODS A comprehensive literature search was performed using PubMed terms 'TGF-β' and 'IVD'. RESULTS TGF-β signaling is necessary for the development and growth of IVD, and can play a protective role in the restoration of IVD tissues by stimulating matrix synthesis, inhibiting matrix catabolism, inflammatory response and cell loss. However, excessive activation of TGF-β signaling is detrimental to the IVD, and inhibition of the aberrant TGF-β signaling can delay IVD degeneration. CONCLUSIONS Activation of TGF-β signaling has a promising treatment prospect for IVD degeneration, while excessive activation of TGF-β signaling may contribute to the progression of IVD degeneration. Studies aimed at elucidating the changing role of TGF-β signaling in IVD at different pathophysiological stages and its specific molecular mechanisms are needed, and these studies will contribute to safe and effective TGF-β signaling-based treatments for IVD degeneration.
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Affiliation(s)
- S Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - S Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - K Ma
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Zhao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - H Lin
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Z Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Itaya N, Yabe Y, Hagiwara Y, Kanazawa K, Koide M, Sekiguchi T, Yoshida S, Sogi Y, Yano T, Tsuchiya M, Saijo Y, Itoi E. Effects of Low-Intensity Pulsed Ultrasound for Preventing Joint Stiffness in Immobilized Knee Model in Rats. ULTRASOUND IN MEDICINE & BIOLOGY 2018; 44:1244-1256. [PMID: 29573888 DOI: 10.1016/j.ultrasmedbio.2018.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 01/30/2018] [Accepted: 02/03/2018] [Indexed: 06/08/2023]
Abstract
The purpose of this study was to examine the effect of low-intensity pulsed ultrasound (LIPUS) in preventing joint stiffness. Unilateral knee joints were immobilized in two groups of rats (n = 6/period/group). Under general anesthesia, the immobilized knee joints were exposed to LIPUS for 20 min/d, 5 d/wk, using an existing LIPUS device (LIPUS group, 1.5-MHz frequency, 1.0-kHz repetition cycle, 200-µs burst width and 30-mW/cm2 power output) until endpoints (2, 4 or 6 wk). In the control group, general anesthesia alone was administered in the same manner as in the other group. The variables compared between the groups included joint angles; histologic, histomorphometric and immunohistochemical analyses; quantitative reverse transcription polymerase chain reactions; and tissue elasticity. LIPUS had a preventive effect on joint stiffness, resulting in decreased adhesion, fibrosis and inflammation and hypoxic response after joint immobilization.
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Affiliation(s)
- Nobuyuki Itaya
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Yutake Yabe
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Yoshihiro Hagiwara
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan.
| | - Kenji Kanazawa
- Department of Orthopaedic Surgery, Iwate Prefectural Central Hospital, Morioka, Iwate, Japan
| | - Masashi Koide
- Department of Orthopaedic Surgery, Matsuda Hospital, Izumi-ku, Sendai, Japan
| | - Takuya Sekiguchi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Shinichirou Yoshida
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Yasuhito Sogi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Toshihisa Yano
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | | | - Yoshihumi Saijo
- Department of Biomedical Imaging, Tohoku University Graduate School of Biomedical Engineering, Aoba-ku, Sendai, Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
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Tang L, Li N, Jian W, Kang Y, Yin B, Sun S, Guo J, Sun L, Ta D. Low-intensity pulsed ultrasound prevents muscle atrophy induced by type 1 diabetes in rats. Skelet Muscle 2017; 7:29. [PMID: 29273088 PMCID: PMC5741922 DOI: 10.1186/s13395-017-0145-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 11/29/2017] [Indexed: 01/08/2023] Open
Abstract
Background Type 1 diabetes mellitus (T1DM) induces serious skeletal muscle atrophy. Low-intensity pulsed ultrasound (LIPUS) is a common treatment for skeletal muscle injury and is effective in accelerating the rate of muscle growth. However, to the best of our knowledge, whether LIPUS can improve skeletal muscle atrophy in type 1 diabetic rats has not been investigated. Methods The rats were randomly divided into four groups: the normal control group (NC); the sham-treated diabetic control group (DC); the diabetic, insulin-treated group (DI) as a positive control; and the diabetic LIPUS therapy group (DL). The DL rats were treated with LIPUS (1 MHz, 30 mW/cm2) on the gastrocnemius for 20 min/day. Results After 6 weeks, the rats in the DC group showed severe muscle atrophy. However, LIPUS significantly improved type 1 diabetes-induced muscle atrophy, as evidenced by significantly enhanced muscle cross-sectional area, muscle mass, and strength. Moreover, compared with the DC group, LIPUS significantly activated Akt and upregulated the expression of mTOR, and LIPUS downregulated the expression of MSTN, its receptor ActRIIB, and FoxO1. Conclusions These results indicate that LIPUS improved muscle atrophy induced by type 1 diabetes, and the MSTN/Akt/mTOR&FoxO1 signaling pathway may play a role in this improvement.
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Affiliation(s)
- Liang Tang
- Institute of Sports Biology, Shaanxi Normal University, Xi'an, 710119, China
| | - Nan Li
- Institute of Sports Biology, Shaanxi Normal University, Xi'an, 710119, China.,Leisure Management College, Xi'an Eurasia University, Xi'an, China
| | - Wenqi Jian
- Institute of Sports Biology, Shaanxi Normal University, Xi'an, 710119, China
| | - Yiting Kang
- Institute of Sports Biology, Shaanxi Normal University, Xi'an, 710119, China
| | - Bo Yin
- Institute of Sports Biology, Shaanxi Normal University, Xi'an, 710119, China
| | - Shuxin Sun
- Department of Electronic Engineering, Fudan University, Shanghai, 200433, China
| | - Jianzhong Guo
- Shaanxi Key Laboratory of Ultrasonics, Shaanxi Normal University, Xi'an, China
| | - Lijun Sun
- Institute of Sports Biology, Shaanxi Normal University, Xi'an, 710119, China.
| | - Dean Ta
- Department of Electronic Engineering, Fudan University, Shanghai, 200433, China. .,Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention (MICCAI) of Shanghai, Shanghai, China.
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唐 华, 杨 欢, 范 艺, 李 成. [Low-intensity pulsed ultrasound promotes repair of cyclophosphamide?induced ovarian injury in rats]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2017; 37:1632-1636. [PMID: 29292257 PMCID: PMC6744014 DOI: 10.3969/j.issn.1673-4254.2017.12.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To study the effects of low?intensity pulsed ultrasound (LIPUS) in promoting repair of cyclophosphamide (CTX)?induced ovarian injury in female rats. METHODS Fifty female SD rats were subjected to intraperitoneal injection of cyclophosphamide at 30 mg/kg for 5 consecutive days to induce premature ovarian failure. Successful modeling was achieved in 43 rats, which were then randomized into model group (21 rats) and treatment group (22 rats), with another 13 rats without any injections serving as the normal control group. The rats in the treatment group received low?intensity pulsed ultrasound treatment, and those in the other two groups received no interventions. The estrous cycle of the rats was monitored during the experiment, and all the rats were sacrificed 7 days after the treatment for analysis of serum estradiol (E2), follicle stimulating hormone (FSH), anti?Mullerian hormone (AMH), morphological changes of the ovary and the number of follicles. RESULTS Compared with those in the normal control group, the rats in the model group showed disorders in the estrous cycle, reduced number of follicles at all levels, significantly decreased serum E2 and AMH, and increased serum FSH following CTX injection (P=0.01). Ultrasound treatment obviously promoted the recovery of estrous cycle, significantly increased the number of follicles and serum E2 (P=0.01), and decreased FSH (P=0.01) in the rats with CTX?induced ovarian injury, but AMH showed no significant changes after ultrasound treatment (P=0.50). CONCLUSION Low?intensity pulsed ultrasound can promote the repair of the CTX?induced ovarian injury in SD rats.
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Affiliation(s)
- 华均 唐
- />重庆医科大学生物医学工程学院//省部共建国家重点实验室培育基地—重庆市超声医学工程重点实验室//重庆市生物医学工程学重点实验室//重庆市微无创医学协同创新中心,重庆 400016State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimallyinvasive and Noninvasive Medicine; Chongqing Medical University, Chongqing 40016, China
| | - 欢 杨
- />重庆医科大学生物医学工程学院//省部共建国家重点实验室培育基地—重庆市超声医学工程重点实验室//重庆市生物医学工程学重点实验室//重庆市微无创医学协同创新中心,重庆 400016State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimallyinvasive and Noninvasive Medicine; Chongqing Medical University, Chongqing 40016, China
| | - 艺巾 范
- />重庆医科大学生物医学工程学院//省部共建国家重点实验室培育基地—重庆市超声医学工程重点实验室//重庆市生物医学工程学重点实验室//重庆市微无创医学协同创新中心,重庆 400016State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimallyinvasive and Noninvasive Medicine; Chongqing Medical University, Chongqing 40016, China
| | - 成志 李
- />重庆医科大学生物医学工程学院//省部共建国家重点实验室培育基地—重庆市超声医学工程重点实验室//重庆市生物医学工程学重点实验室//重庆市微无创医学协同创新中心,重庆 400016State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimallyinvasive and Noninvasive Medicine; Chongqing Medical University, Chongqing 40016, China
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Puts R, Ruschke K, Ambrosi TH, Kadow-Romacker A, Knaus P, Jenderka KV, Raum K. A Focused Low-Intensity Pulsed Ultrasound (FLIPUS) System for Cell Stimulation: Physical and Biological Proof of Principle. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2016; 63:91-100. [PMID: 26552085 DOI: 10.1109/tuffc.2015.2498042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Quantitative ultrasound (QUS) is a promising technique for bone tissue evaluation. Highly focused transducers used for QUS also have the capability to be applied for tissue-regenerative purposes and can provide spatially limited deposition of acoustic energy. We describe a focused low-intensity pulsed ultrasound (FLIPUS) system, which has been developed for the stimulation of cell monolayers in the defocused far field of the transducer through the bottom of the well plate. Tissue culture well plates, carrying the cells, were incubated in a special chamber, immersed in a temperature-controlled water tank. A stimulation frequency of 3.6 MHz provided an optimal sound transmission through the polystyrene well plate. The ultrasound was pulsed for 20 min daily at 100-Hz repetition frequency with 27.8% duty cycle. The calibrated output intensity corresponded to I(SATA) = 44.5 ± 7.1 mW/cm2, which is comparable to the most frequently reported nominal output levels in LIPUS studies. No temperature change by the ultrasound exposure was observed in the well plate. The system was used to stimulate rat mesenchymal stem cells (rMSCs). The applied intensity had no apoptotic effect and enhanced the expression of osteogenic markers, i.e., osteopontin (OPN), collagen 1 (Col-1), the osteoblast-specific transcription factor-Runx-2 and E11 protein, an early osteocyte marker, in stimulated cells on day 5. The proposed FLIPUS setup opens new perspectives for the evaluation of the mechanistic effects of LIPUS.
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