1
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Chang HN, Chen CK, Yu TY, Pang JHS, Hsu CC, Lin LP, Tsai WC. Lidocaine inhibits migration of tenocytes by downregulating focal adhesion kinase and paxillin phosphorylation. J Orthop Res 2024; 42:985-992. [PMID: 38044475 DOI: 10.1002/jor.25762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/05/2023]
Abstract
Lidocaine is the most frequently applied local infiltration anesthetic agent for treating tendinopathies. However, studies have discovered lidocaine to negatively affect tendon healing. In the current study, the molecular mechanisms and effects of lidocaine on tenocyte migration were evaluated. We treated tenocytes intrinsic to the Achilles tendons of Sprague-Dawley rats with lidocaine. The migration ability of cells was analyzed using electric cell-substrate impedance sensing (ECIS) and scratch wound assay. We then used a microscope to evaluate the cell spread. We assessed filamentous actin (F-actin) cytoskeleton formation through immunofluorescence staining. In addition, we used Western blot analysis to analyze the expression of phospho-focal adhesion kinase (FAK), FAK, phospho-paxillin, paxillin, and F-actin. We discovered that lidocaine had an inhibitory effect on the migration of tenocytes in the scratch wound assay and on the ECIS chip. Lidocaine treatment suppressed cell spreading and changed the cell morphology and F-actin distribution. Lidocaine reduced F-actin formation in the tenocyte during cell spreading; furthermore, it inhibited phospho-FAK, F-actin, and phospho-paxillin expression in the tenocytes. Our study revealed that lidocaine inhibits the spread and migration of tenocytes. The molecular mechanism potentially underlying this effect is downregulation of F-actin, phospho-FAK, and phospho-paxillin expression when cells are treated with lidocaine.
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Affiliation(s)
- Hsiang-Ning Chang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
| | - Chih-Kuang Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Taoyuan, Taoyuan City, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
| | - Jong-Hwei S Pang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Chih-Chin Hsu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Keelung, Keelung City, Taiwan
| | - Li-Ping Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Taoyuan, Taoyuan City, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Taoyuan, Taoyuan City, Taiwan
- School of Medicine, Chang Gung University, Taoyuan City, Taiwan
- Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital at Taoyuan, Taoyuan City, Taiwan
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2
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Tsai WC. Field-Programmable Gate Array-Based Implementation of Zero-Trust Stream Data Encryption for Enabling 6G-Narrowband Internet of Things Massive Device Access. Sensors (Basel) 2024; 24:853. [PMID: 38339569 PMCID: PMC10856842 DOI: 10.3390/s24030853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/07/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024]
Abstract
With the advent of 6G Narrowband IoT (NB-IoT) technology, IoT security faces inevitable challenges due to the application requirements of Massive Machine-Type Communications (mMTCs). In response, a 6G base station (gNB) and User Equipment (UE) necessitate increased capacities to handle a larger number of connections while maintaining reasonable performance during operations. To address this developmental trend and overcome associated technological hurdles, this paper proposes a hardware-accelerated and software co-designed mechanism to support streaming data transmissions and secure zero-trust inter-endpoint communications. The proposed implementations aim to offload processing efforts from micro-processors and enhance global system operation performance by hardware and software co-design in endpoint communications. Experimental results demonstrate that the proposed secure mechanism based on the use of non-repeating keys and implemented in FPGA, can save 85.61%, 99.71%, and 95.68% of the micro-processor's processing time in key block generations, non-repeating checks, and data block transfers, respectively.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Intelligent Production Engineering, National Taichung University of Science and Technology, Taichung City 404, Taiwan
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3
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Chen LS, Chen CK, Pang JHS, Lin LP, Yu TY, Tsai WC. Leukocyte-poor platelet-rich plasma and leukocyte-rich platelet-rich plasma promote myoblast proliferation through the upregulation of cyclin A, cdk1, and cdk2. J Orthop Res 2024; 42:32-42. [PMID: 37442643 DOI: 10.1002/jor.25666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/05/2023] [Accepted: 07/11/2023] [Indexed: 07/15/2023]
Abstract
Muscle injuries are common among athletes and often treated with platelet-rich plasma (PRP). However, whether the leukocyte concentration affects the efficacy of PRP in treating muscle injuries remains unclear. This study investigated the effects of leukocyte-poor platelet-rich plasma (LP-PRP) and leukocyte-rich platelet-rich plasma (LR-PRP) on myoblast proliferation and the molecular mechanisms underlying these effects. Myoblasts were treated with 0.5% LP-PRP, 0.5% LR-PRP, 1% LP-PRP, or 1% LR-PRP for 24 h. The gene expression of the LP-PRP- and LR-PRP-treated myoblasts was determined using RNA sequencing analysis. Cell proliferation was evaluated using an bromodeoxyuridine (BrdU) assay, and cell cycle progression was assessed through flow cytometry. The expression of cyclin A, cyclin-dependent kinase 1 (cdk1), and cdk2 was examined using Western blotting. The expression of myoblast determination protein 1 (MyoD1) was examined through Western blotting and immunofluorescence staining. The LP-PRP and LR-PRP both promoted the proliferation of myoblasts and increased differential gene expression of myoblasts. Moreover, the LP-PRP and LR-PRP substantially upregulated the expression of cyclin A, cdk1, and cdk2. MyoD1 expression was induced in the LP-PRP and LR-PRP-treated myoblasts. Our results corroborate the finding that LP-PRP and LR-PRP have similar positive effects on myoblast proliferation and MyoD1 expression.
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Affiliation(s)
- Li-Siou Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chih-Kuang Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Jong-Hwei Su Pang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Li-Ping Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
- Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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4
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Tuan PH, Tsai WC, Chen WR. Stable pulsed operation of Lissajous structured beams by Nd:YVO 4/Cr 4+:YAG laser in a concave-convex resonator. Opt Lett 2023; 48:2245-2248. [PMID: 37126245 DOI: 10.1364/ol.488815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A Nd:YVO4/Cr4+:YAG laser with a symmetric concave-convex cavity ensuring strong intracavity beam focusing on the absorber is designed for stable pulsed operation of Lissajous structured modes with transverse patterns as Lissajous figures. Setting the cavity length to fulfill the criterion for efficient passive Q switching (PQS), as well as to meet the accidental degenerate conditions, Lissajous pulsed beams with well-defined structures and good temporal stability are created under two-dimensional off-axis pumping. Although the multi-transverse-mode oscillation inevitably induces asynchronous pulsation and leads the short-term pulse profiles to reveal parasitic effects, the overall long-term behavior of Lissajous pulses can be kept regular with amplitude fluctuations ≤15% and pulse-to-pulse timing jitter ≤5%. With the maximum peak power exceeding 500 W at a pump power of 4.5 W, the PQS Lissajous modes are further transformed into trochoidal pulsed beams to realize high-order and high-peak power structured vortex fields.
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Tsai WC, Lin HE, Lan YC, Chen SJ. Anticipative QoS Control: A Self-Reconfigurable On-Chip Communication. Micromachines (Basel) 2022; 13:1669. [PMID: 36296022 PMCID: PMC9607210 DOI: 10.3390/mi13101669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
A self-reconfigurable Network-on-Chip (NoC) architecture that supports anticipative Quality of Service (QoS) control with penetrative switch ability is proposed to enhance the performance of bidirectional-channel NoC communication while supporting prioritized packet transmission services. The anticipative QoS control not only allows each communication channel to be dynamically self-configured to transmit flits in either direction for a better channel utilization of on-chip hardware resources, but also enhances the latency performance for QoS services. The proposed anticipative control is based on penetratingly observing channel direction requests of routers that is two hops away from the current one. The added ability enables a router to allocate high-priority packets to a dedicated virtual channel and then rapidly bypass it to the next destination router. The provided flexibility of packet switch promises better channel bandwidth utilization, lower packet delivery latency, and furthermore guarantees the high-priority packets being served with a better QoS. Accordingly, in this paper, an enhanced NoC architecture supporting the hybrid anticipative QoS, penetrative switch, and bidirectional-channel control, namely Anticipative QoS Bidirectional-channel NoC (AQ-BiNoC) is presented. Tested with cycle-accurate synthetic traffic patterns, significant performance enhancement has been observed when the proposed AQ-BiNoC architecture is compared against conventional NoC designs.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Intelligent Production Engineering, National Taichung University of Science and Technology, Taichung 404336, Taiwan
| | | | - Ying-Cherng Lan
- Department of Electrical Engineering, National Taiwan University, Taipei 106216, Taiwan
| | - Sao-Jie Chen
- Department of Electrical Engineering, National Taiwan University, Taipei 106216, Taiwan
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Chen YC, Chang HN, Pang JHS, Lin LP, Chen JM, Yu TY, Tsai WC. Lidocaine Inhibited Tendon Cell Proliferation and Extracellular Matrix Production by Down Regulation of Cyclin A, CDK2, Type I and Type III Collagen Expression. Int J Mol Sci 2022; 23:ijms23158787. [PMID: 35955918 PMCID: PMC9368801 DOI: 10.3390/ijms23158787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 07/28/2022] [Accepted: 08/03/2022] [Indexed: 11/30/2022] Open
Abstract
Lidocaine injection is a common treatment for tendon injuries. However, the evidence suggests that lidocaine is toxic to tendon cells. This study investigated the effects of lidocaine on cultured tendon cells, focusing on the molecular mechanisms underlying cell proliferation and extracellular matrix (ECM) production. Tendon cells cultured from rat Achilles tendons were treated with 0.5, 1.0, or 1.5 mg/mL lidocaine for 24 h. Cell proliferation was evaluated by Cell Counting Kit 8 (CCK-8) assay and bromodeoxyuridine (BrdU) assay. Cell apoptosis was assessed by Annexin V and propidium iodide (PI) stain. Cell cycle progression and cell mitosis were assessed through flow cytometry and immunofluorescence staining, respectively. The expression of cyclin E, cyclin A, cyclin-dependent kinase 2 (CDK2), p21, p27, p53, matrix metalloproteinases-2 (MMP-2), matrix metalloproteinases-9 (MMP-9), type I collagen, and type III collagen were examined through Western blotting, and the enzymatic activity of MMP-9 was determined through gelatin zymography. Lidocaine reduced cell proliferation and reduced G1/S transition and cell mitosis. Lidocaine did not have a significant negative effect on cell apoptosis. Lidocaine significantly inhibited cyclin A and CDK2 expression but promoted p21, p27, and p53 expression. Furthermore, the expression of MMP-2 and MMP-9 increased, whereas that of type I and type III collagen decreased. Lidocaine also increased the enzymatic activity of MMP-9. Our findings support the premise that lidocaine inhibits tendon cell proliferation by changing the expression of cell-cycle-related proteins and reduces ECM production by altering levels of MMPs and collagens.
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Affiliation(s)
- Yen-Chia Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
| | - Hsiang-Ning Chang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
| | - Jong-Hwei Su Pang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Li-Ping Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Jing-Min Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
- School of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
- Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
- Correspondence:
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Huang M, Lin WC, Chen YD, Hsiao TA, Liu PY, Tsai WC. Explainable deep neural network for echocardiography view classification. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Ministry of Science and Technology, Taiwan
Background
Deep neural network may assist echocardiography interpretation in several tasks; however, the lack of expandability hindered its broader application since physicians couldn’t realize the rationale of interpretation clearly and comfortably.
Method
Retrospectively, we manually annotated 26,465 transthoracic echocardiography images into 29 classes for model development in 4:1 ratio as training and validation datasets. We added an autoencoder component into our model, adapted from capsule net, for view-classifying to deconvolute the feature maps of last layer as decoder for human interpretation. The performance of view classification was measured in accuracy and confusion matrix, and the interpretability of model were assessed by cardiologist.
Result
After appropriate model training, the accuracy of our model achieved averaged 98.2% for echocardiography view classification, ranged from lowest 80.0% in suprasternal view to 100% of several more common view in validation dataset. The successful deconvolution of feature map to reconstruct images showed essential independent components of echocardiography view and could be interpretated by cardiologist and clinical physicians.
Conclusion
With the use of autoencoder in model for echocardiography view classification showed maintainable good performance in accuracy and facilitated clinical interpretation to enhance its reliability. Abstract Figure. Model architecture and performance Abstract Figure. Example of explaniable deconvolution
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Affiliation(s)
- M Huang
- National Cheng Kung University Hospital, Cardiology department, Tainan, Taiwan
| | - WC Lin
- National Cheng Kung University Hospital, Cardiology department, Tainan, Taiwan
| | - YD Chen
- National Cheng Kung University Hospital, Cardiology department, Tainan, Taiwan
| | - TA Hsiao
- National Cheng Kung University Hospital, Cardiology department, Tainan, Taiwan
| | - PY Liu
- National Cheng Kung University Hospital, Cardiology department, Tainan, Taiwan
| | - WC Tsai
- National Cheng Kung University Hospital, Cardiology department, Tainan, Taiwan
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Tsai WC, Tsai TH, Wang TJ, Chiang ML. Automatic Key Update Mechanism for Lightweight M2M Communication and Enhancement of IoT Security: A Case Study of CoAP Using Libcoap Library. Sensors (Basel) 2022; 22:s22010340. [PMID: 35009882 PMCID: PMC8749857 DOI: 10.3390/s22010340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 02/05/2023]
Abstract
The ecosystem for an Internet of Things (IoT) generally comprises endpoint clients, network devices, and cloud servers. Thus, data transfers within the network present multiple security concerns. The recent boom in IoT applications has accelerated the need for a network infrastructure that provides timely and safe information exchange services. A shortcoming of many existing networks is the use of static key authentication. To enable the use of automatic key update mechanisms in IoT devices and enhance security in lightweight machine-to-machine (M2M) communications, we propose a key update mechanism, namely, double OTP (D-OTP), which combines both one-time password (OTP) and one-time pad to achieve an IoT ecosystem with theoretically unbreakable security. The proposed D-OTP was implemented into the Constrained Application Protocol (CoAP) through the commonly used libcoap library. The experimental results revealed that an additional 8.93% latency overhead was required to obtain an unbreakable guarantee of data transfers in 100 CoAP communication sessions.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Information and Communication Engineering, Chaoyang University of Technology, Taichung City 413310, Taiwan;
- Correspondence: (W.-C.T.); (M.-L.C.)
| | - Tzu-Hsuan Tsai
- Department of Information and Communication Engineering, Chaoyang University of Technology, Taichung City 413310, Taiwan;
| | - Te-Jen Wang
- Smart System Institute, Institute for Information Industry, Taipei City 10622, Taiwan;
| | - Mao-Lun Chiang
- Bachelor Degree Program of Artificial Intelligence, National Taichung University of Science and Technology, Taichung City 40401, Taiwan
- Correspondence: (W.-C.T.); (M.-L.C.)
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Ho CS, Yu TY, Chen CH, Lin YC, Tsai WC. On-site Ultrasound Screens out Asymptomatic Knee Lesions in Elite Adolescent Male Basketball Players. Int J Med Sci 2022; 19:1856-1863. [PMID: 36438915 PMCID: PMC9682505 DOI: 10.7150/ijms.72299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 10/05/2022] [Indexed: 01/25/2023] Open
Abstract
Basketball is a popular sport worldwide with a high injury risk. In this study, we conducted survey composed of clinical symptom reporting scale, physical examination and meticulous portable musculoskeletal ultrasound to 19 elite male high school basketball players and 15 regular male high school students. Our study showed the incidence of ultrasonographic findings of any lesion, suprapatellar effusion and proximal patellar tendinopathy is significantly higher in player group, and the incidence of asymptomatic ultrasonographic lesion is also higher in player group. Screening for asymptomatic lesions bares clinical relevance and plays a role in prevention of symptom development. With the concise and easy-to-perform ultrasonography protocol we performed and being interpreted by sports team physician, the protocol can offer precise diagnosis of common injury and screening for asymptomatic lesion potentially progressive.
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Affiliation(s)
- Chan-Shien Ho
- Department of Physical Medicine & Rehabilitation, New Taipei Municipal Tucheng Hospital, New Taipei City, Taiwan.,Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chien-Hung Chen
- Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Yin-Chou Lin
- Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Physical Medicine & Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Open University of Kaohsiung, Center for General Education, Kaohsiung, Taiwan
| | - Wen-Chung Tsai
- Center of Comprehensive Sports Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Physical Medicine & Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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Tsai WC, Yu TY, Chang GJ, Chang HN, Lin LP, Lin MS, Pang JHS. Use of Platelet-Rich Plasma Plus Suramin, an Antifibrotic Agent, to Improve Muscle Healing After Injuries. Am J Sports Med 2021; 49:3102-3112. [PMID: 34351815 DOI: 10.1177/03635465211030295] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The increasing use of platelet-rich plasma (PRP) to treat muscle injuries raises concerns because transforming growth factor-beta (TGF-β) in PRP may promote fibrosis in the injured muscle and thus impair muscle regeneration. PURPOSE To investigate whether suramin (a TGF-β inhibitor) can reduce muscle fibrosis to improve healing of the injured muscle after PRP treatment and identify the underlying molecular mechanism. STUDY DESIGN Controlled laboratory study. METHODS Myoblasts isolated from the gastrocnemius muscle of Sprague Dawley rats were treated with PRP or PRP plus suramin. MTT assays were performed to evaluate cell viability. The expression of fibrosis-associated proteins (such as type I collagen and fibronectin), Smad2, and phosphorylated Smad2 was determined using Western blot analysis and immunofluorescent staining. An anti-TGF-β antibody was employed to verify the role of TGF-β in fibronectin expression. Gastrocnemius muscles were injured through a partial transverse incision and then treated using PRP or PRP plus suramin. Hematoxylin and eosin staining was conducted to evaluate the healing process 7 days after the injury. Immunofluorescent staining was performed to evaluate fibronectin expression. Muscle contractile properties-fast-twitch and tetanic strength-were evaluated through electric stimulation. RESULTS PRP plus 25 μg/mL of suramin promoted myoblast proliferation. PRP induced fibronectin expression in myoblasts, but suramin reduced this upregulation. The anti-TGF-β antibody also reduced the upregulation of fibronectin expression in the presence of PRP. The upregulation of phosphorylated Smad2 by PRP was reduced by either the anti-TGF-β antibody or suramin. In the animal study, no significant difference was discovered in muscle healing between the PRP versus PRP plus suramin groups. However, the PRP plus suramin group had reduced fibronectin expression at the injury site. Fast-twitch strength and tetanic strength were significantly higher in the injured muscle treated using PRP or PRP plus suramin. CONCLUSION Simultaneous PRP and suramin use reduced fibrosis in the injured muscle and promoted healing without negatively affecting the muscle's contractile properties. The underlying molecular mechanism may be associated with the phosphorylated Smad2 pathway. CLINICAL RELEVANCE Simultaneous PRP and suramin use may reduce muscle fibrosis without compromising muscle contractile properties and thus improve muscle healing.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Linkou Chang Gung Memorial Hospital, Taoyuan City, Taiwan.,College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Linkou Chang Gung Memorial Hospital, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Gwo-Jyh Chang
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Hsiang-Ning Chang
- Department of Physical Medicine and Rehabilitation, Linkou Chang Gung Memorial Hospital, Taoyuan City, Taiwan
| | - Li-Ping Lin
- Department of Physical Medicine and Rehabilitation, Linkou Chang Gung Memorial Hospital, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Miao-Sui Lin
- Department of Physical Medicine and Rehabilitation, Linkou Chang Gung Memorial Hospital, Taoyuan City, Taiwan
| | - Jong-Hwei S Pang
- Department of Physical Medicine and Rehabilitation, Linkou Chang Gung Memorial Hospital, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
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Yu TY, Pang JHS, Lin LP, Cheng JW, Liu SJ, Tsai WC. Platelet-Rich Plasma Releasate Promotes Early Healing in Tendon After Acute Injury. Orthop J Sports Med 2021; 9:2325967121990377. [PMID: 33959667 PMCID: PMC8060760 DOI: 10.1177/2325967121990377] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 09/30/2020] [Indexed: 11/16/2022] Open
Abstract
Background Acute tendon injury can limit motion and thereby inhibit tendon healing. Positive results have been found after the use of platelet-rich plasma (PRP) to treat tendon injury; however, the early effects of PRP on tendon regeneration are not known. Purpose/Hypothesis The purpose of this study was to evaluate the effects of PRP releasate (PRPr) on the early stages of tendon healing in a rat partial tenotomy model. It was hypothesized that PRPr can promote early healing of an Achilles tendon in rats. Study Design Controlled laboratory study. Methods PRP was prepared by a 2-step method of manual platelet concentration from 10 rats. PRPr was isolated from the clotted preparation after activation by thrombin and was applied to an Achilles tendon on 1 side of 30 rats on the second day after partial tenotomy, with normal saline used as the control on the other side. Achilles tendon samples were harvested 5 and 10 days after tenotomy. At each time point, 15 Achilles tendon samples were obtained, of which 5 samples were evaluated by Masson trichrome staining, apoptosis, and cell proliferation, while the other 10 samples were tested for tensile strength using a material testing machine. Results Compared with saline-treated control tendons, the PRPr-treated tendons showed increased collagen synthesis near the cut edge and fewer apoptotic cells (P = .01). An immunohistochemical analysis revealed more Ki-67-positive cells but fewer cluster of differentiation (CD) 68+ (ED1+) macrophages in PRPr tendons compared with saline-treated tendons (P < .01). Tendons treated with PRPr also showed higher ultimate tensile strength than those treated with saline (P = .03). Conclusion PRPr treatment promotes tissue recovery in the early phase of tendon healing by stimulating tendon cell proliferation and collagen production while inhibiting cell apoptosis and CD68+ (ED1+) macrophage infiltration. Clinical Relevance These findings suggest that with PRPr treatment, higher loads can be applied to the healing tendon at an earlier time, which can help the patient resume activity earlier.
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Affiliation(s)
- Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
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12
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Tsai WC, Lee WY, Huang MS, Lee WH. Different effects on right ventricular function in different etiology of secondary tricuspid regurgitation. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Ministry of Science and Technology, Excutive Yuan, Taiwan
Background
Tricuspid regurgitation (TR) is traditionally classified as primary or secondary TR. The effects of TR on right ventricular (RV) function were not consistent. We hypothesized that secondary TR is not a unique group, sophisticated sub-grouping can be useful for studying effects of TR on RV function.
Methods
207 consecutive patients identified as significant TR (moderate and severe) by echocardiography were recruited. Standard measurements for right heart were done according to guideline. Lateral tricuspid annulus systolic tissue velocity (S’) and RV fractional area change (FAC) were used for RV function. We classified these patients into primary TR and 6 subgroups of secondary TR according to a new systemic approach.
Results
Mean age of subjects was 71.2 ± 14.7 years, and there were 84 (40.6%) male. There were 29 (14%) primary TR. Secondary TR was further classified into 6 groups included 18 (8.7%) pacemaker related, 81 (39.1 %) left heart diseases, 6 (2.9%) congenital heart diseases, 3 (1.4%) RV myopathy, 27 (13.0%) pulmonary hypertension, and 43 (20.8%) idiopathic TR. Among 4 major groups (congenital heart disease and RV myopathy were not included in analysis due to low numbers) of secondary TR, S’ was significant higher in idiopathic TR and RV FAC were higher in pacemaker related and idiopathic TR. RV dysfunction was defined as FAC < 35%. RV dysfunction presented mostly in pulmonary hypertension related TR and leastly in idiopathic TR (59.3% vs. 14%, p <0.001). Multivariate analysis using idiopathic TR as reference and controlled TR maximal velocity, RV end-diastolic area, right atrial area, and severity of TR, left heart disease related TR had higher risk of RV dysfunction (OR 4.178, 95% CI 1.490-11.703, p = 0.007).
Conclusions
Effects of TR on RV function were different among different subgroups of secondary TR. Left heart disease related TR had highest risk for RV dysfunction. Secondary TR should not be regarded as a single disease.
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Affiliation(s)
- WC Tsai
- National Cheng Kung University Hospital, Tainan, Taiwan
| | - WY Lee
- National Cheng Kung University Hospital, Tainan, Taiwan
| | - MS Huang
- National Cheng Kung University Hospital, Tainan, Taiwan
| | - WH Lee
- National Cheng Kung University Hospital, Tainan, Taiwan
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13
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Li LWY, Huang MS, Lee WH, Tsai WC. Characteristics of idiopathic tricuspid regurgitation. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Ministry of Science and Technology, Executive Yuan, Taiwan
Background
Tricuspid regurgitation (TR) were traditionally classified as primary and secondary TR. Recently a new category of TR was developed and named as idiopathic TR. However, diagnosis and characteristics of idiopathic TR were not consisted. We tried to identify idiopathic TR by a new systemic approach and studied its characteristics.
Methods
207 consecutive patients (mean age 71.2 ± 14.7 years, 40.6% male) identified as significant TR (moderate and severe) by echocardiography were recruited. We classified TR by a new systemic approach. The classification process started from identified primary TR, then pacemaker related TR, left heart disease related TR, congenital heart related TR, right ventricular (RV) myopathy, pulmonary hypertension and, finally idiopathic TR step by step.
Results
There were 29 (14%) primary TR, 18 (8.7%) pacemaker related, 81 (39.1 %) left heart diseases, 6 (2.9%) congenital heart diseases, 3 (1.4%) RV myopathy, 27 (13%) pulmonary hypertension, and 43 (20.8%) idiopathic TR. Mean age of idiopathic TR was 72.9 ± 11.4 years and 39.5% was male which were not different from other groups. Atrial fibrillation was presented highest in patients with pacemaker related TR (77.8%) and left heart disease (55.6%), lowest in primary TR (24.1%) and pulmonary HT (25.9%), and modest in idiopathic TR (44.2%). Among the echocardiographic characteristics of right heart measurements, idiopathic TR had lowest TR maximal velocity (3.0 ± 0.3 m/s), pulmonary (41.2 ± 8.7 mmHg) and right atrium pressure (5.3 ± 0.3 mmHg; all p <0.001). Idiopathic TR had smallest RV wall thickness (4.5 ± 1.4 mm; p = 0.008), tricuspid annulus diameter (3.2 ± 0.7 cm; p = 0.001), and right atrial area (18.9 ± 8.4 cm2; p <0.001). RV function represented as tricuspid annulus velocity S’ (12.8 ± 3.3 cm/s; p = 0.011) and RV fractional area change FAC (42.6 ± 16.0 %; p <0.001) were best in idiopathic TR. RV dysfunction (FAC < 35%) was lowest (14%) in idiopathic TR.
Conclusions
Idiopathic TR had better RV function then other types of TR. Idiopathic TR can be regarded as a unique disease category in studying TR.
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Affiliation(s)
- LWY Li
- Kaohsiung Medical University, Medical Imaging and Radiological Sciences, Kaohsiung, Taiwan
| | - MS Huang
- National Cheng Kung University Hospital, Internal Medicine, Tainan, Taiwan
| | - WH Lee
- National Cheng Kung University Hospital, Internal Medicine, Tainan, Taiwan
| | - WC Tsai
- National Cheng Kung University Hospital, Internal Medicine, Tainan, Taiwan
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Chen YJ, Kung PT, Chou WY, Tsai WC. Alendronate medication possession ratio and the risk of second hip fracture: an 11-year population-based cohort study in Taiwan. Osteoporos Int 2020; 31:1555-1563. [PMID: 32221674 DOI: 10.1007/s00198-020-05399-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/20/2020] [Indexed: 01/22/2023]
Abstract
UNLABELLED Alendronate is effective in preventing second hip fracture in osteoporotic patients. However, no consensus exists on the duration that is effective in preventing a second hip fracture. Our study demonstrated that risk can be reduced when the prescription is ≥ 6 months for the year following the index hip fracture. INTRODUCTION Alendronate is effective in preventing second hip fracture in osteoporotic patients. However, no consensus exists on the accurate medication possession ratio (MPR) that is effective in preventing a second hip fracture. Our objective was to compare the risk of second hip fracture in patients treated with different MPR of alendronate. METHODS In this population-based cohort study, data from National Health Insurance Research Database of Taiwan were analyzed. Patients 50 years and older who had an index hip fracture and were not receiving any osteoporotic medications before their fracture during 2000-2010 were included. The cohort consisted of 88,320 patients who were new alendronate users (n = 9278) and non-users (n = 79,042). Those without alendronate were matched 4:1 as the control group. Patients were subdivided into those with no medication, MPR < 25%, MPR 25-50%, MPR 50-75%, and MPR 75-100%. Cox proportional hazard models were used to calculate the adjusted hazard ratios for different MPRs of alendronate. RESULTS After matching, 38,675 patients were included in this study; 20,363 (52.7%) were women, and 30,940 (80%) patients were without medication of alendronate. During follow-up on December 31, 2012, 2392 patients had a second hip fracture, for an incidence of 1449/100,000 person-years. Patients with alendronate MPR 50-75% had a lower risk of a second hip fracture compared to non-users (hazard ratio 0.66). When the MPR increased to 75-100%, the hazard ratio decreased to 0.61. CONCLUSIONS In this population-based cohort study, risk of a second hip fracture can be reduced when the alendronate MPR is ≥ 50% for the year following the index hip fracture. As the MPR increases, the risk of a second hip fracture decreases.
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Affiliation(s)
- Y J Chen
- Department of Health Services Administration, China Medical University, Taiwan, No.91, Hsueh-Shih Road, Taichung, Taiwan, 40402, Republic of China
- Department of Orthopedic Surgery, China Medical University Hospital, Taiwan, No. 2, Yuh-Der Road, Taichung, Taiwan, 40402, Republic of China
- School of Medicine, China Medical University, No.91, Hsueh-Shih Road, Taichung, Taiwan, 40402, Republic of China
| | - P T Kung
- Department of Health Administration, Asia University, Taiwan, No. 500, Liufeng Road., Wufeng, Taichung, Taiwan, 41354, Republic of China
- Department of Medical Research, China Medical University Hospital, China Medical University, No.91, Hsueh-Shih Road, Taichung, Taiwan, Republic of China
| | - W Y Chou
- Department of Health Services Administration, China Medical University, Taiwan, No.91, Hsueh-Shih Road, Taichung, Taiwan, 40402, Republic of China
| | - W C Tsai
- Department of Health Services Administration, China Medical University, Taiwan, No.91, Hsueh-Shih Road, Taichung, Taiwan, 40402, Republic of China.
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Liu YC, Wang HL, Huang YZ, Weng YH, Chen RS, Tsai WC, Yeh TH, Lu CS, Chen YL, Lin YW, Chen YJ, Hsu CC, Chiu CH, Chiu CC. Alda-1, an activator of ALDH2, ameliorates Achilles tendinopathy in cellular and mouse models. Biochem Pharmacol 2020; 175:113919. [PMID: 32194057 DOI: 10.1016/j.bcp.2020.113919] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 03/13/2020] [Indexed: 12/15/2022]
Abstract
Achilles tendinopathy has a high re-injury rate and poor prognosis. Development of effective therapy for Achilles tendinopathy is important. Excessive accumulation of ROS and resulting oxidative stress are believed to cause tendinopathy. Overproduction of hydrogen peroxide (H2O2), the most common ROS, could lead to the tendinopathy by causing oxidative damage, activation of endoplasmic reticulum (ER) stress and apoptotic death of tenocytes. Activation of mitochondrial aldehyde dehydrogenase 2 (ALDH2) is expected to alleviate oxidative stress and ER stress. Alda-1 is a selective and potent activator of ALDH2. In this study, we examined the cytoprotective benefit of Alda-1, an activator of ALDH2, on H2O2-induced Achilles tendinopathy in cellular and mouse models. We prepared cellular and mouse models of Achilles tendinopathy by treating cultured Achilles tenocytes and Achilles tendons with oxidative stressor H2O2. Subsequently, we studied the protective benefit of Alda-1 on H2O2-induced Achilles tendinopathy. Alda-1 pretreatment attenuated H2O2-induced cell death of cultured Achilles tenocytes. Treatment of Alda-1 prevented H2O2-induced oxidative stress and depolarization of mitochondrial membrane potential in tenocytes. Application of Alda-1 attenuated H2O2-triggered mitochondria- and ER stress-mediated apoptotic cascades in cultured tenocytes. Alda-1 treatment ameliorated the severity of H2O2-induced Achilles tendinopathy in vivo by preventing H2O2-induced pathological histological features of Achilles tendons, apoptotic death of Achilles tenocytes and upregulated expression of inflammatory cytokines IL-1β and TNF-α. Our results provide the evidence that ALDH2 activator Alda-1 ameliorates H2O2-induced Achilles tendinopathy. Alda-1 could be used for preventing and treating Achilles tendinopathy.
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Affiliation(s)
- Yu-Chuan Liu
- Landseed Sports Medicine Center, Landseed International Hospital, Taoyuan, Taiwan
| | - Hung-Li Wang
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Healthy Aging Research Center, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Division of Movement Disorders, Department of Neurology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ying-Zu Huang
- Healthy Aging Research Center, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Division of Movement Disorders, Department of Neurology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan; Institute of Cognitive Neuroscience, National Central University, Taoyuan, Taiwan
| | - Yi-Hsin Weng
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Division of Movement Disorders, Department of Neurology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Rou-Shayn Chen
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Division of Movement Disorders, Department of Neurology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wen-Chung Tsai
- College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Tu-Hsueh Yeh
- Department of Neurology, Taipei Medical University Hospital, Taiwan
| | - Chin-Song Lu
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ying-Ling Chen
- Department of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Yan-Wei Lin
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Yu-Jie Chen
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Chia-Chen Hsu
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Division of Movement Disorders, Department of Neurology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Chi-Han Chiu
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Division of Movement Disorders, Department of Neurology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ching-Chi Chiu
- Neuroscience Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Division of Movement Disorders, Department of Neurology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Department of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan.
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16
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Tsai WC, Tsai HR, Huang MS, Lee WH. P1771 Gender differences of the blood pressure effects on early changes of left ventricle mechanics in untreated hypertension. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.1128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Left ventricular (LV) diastolic dyssynchrony and global and layer-specific strain can be used for evaluation of early myocardial changes in hypertension. We tried to investigate the gender differences in these early changes in untreated uncomplicated hypertension.
Methods
This study included 43 consecutive patients (mean age 51.3 ±12.5 years, 56% men) with newly diagnosed hypertension from an out-patient clinic. All subjects were free of complications including renal dysfunction, LV hypertrophy, and diabetes. Comprehensive transthoracic echocardiography (E9, GE, USA) was conducted before treatment of hypertension. Diastolic and systolic parameters were measured by two-dimension (2D), Doppler, tissue Doppler imaging and 2D speckle tracking echocardiography (STE). The time-to-peak early diastolic myocardial annulus velocity (Te) at 6 LV segments from apical-4-chamber, apical-2-chamber and apical-3-chamber views were measured with reference to the QRS complex. The time to peak early diastolic strain rate (TDSr), global longitudinal strain (GLS), layer-specific longitudinal strain included sub-epicardial strain (EpiLS) and sub-endocardial strain (EndLS) were measured from 18 LV segments by STE. Diastolic dyssynchrony parameters were defined as the standard deviation (SD) of Te of all LV segments (Te-SD), SD of TDSr of 18 LV segments (TDSr-SD), and the maximal difference between any two TDSr of the 18 LV segments (MaxD-TDSr).
Results
There were no differences between men (56%) and women (44%) regarding age, initial blood pressure, hypertension duration, LV mass index, LV ejection fraction, and early mitral velocity to average early annulus velocity ratio. Regarding diastolic dyssynchrony parameters, men were significantly higher than women including Te-SD (22.3 ± 13.8 vs. 14.7 ± 4.2 ms; p = 0.016), TDSrSD (46.0 ± 13.3 vs. 35.3 ± 11.4 ±ms; p = 0.008), and MaxD-TDSr (162.0 ± 40.3 vs. 128.1 ± 50.7 ms; p = 0.019). Men also had worse GLS (-17.6 ± 1.9 vs. -19.5 ± 2.5 %; p = 0.007), EpiLS (-15.1 ± 1.7 vs. -17.0 ± 2.3, p = 0.003), and EndLS (-20.5 ± 2.2 vs. -22.4 ± 2.8 %; p = 0.018) than women. After multivariate analysis controlling age, systolic blood pressure, and LV mass index, TeSD (p = 0.039), TDSrSD (p = 0.018), MaxD-TDSr (p = 0.035) were still significantly higher than women. GLS (p = 0.046), and EpiLS (p = 0.025) were still worse in men.
Conclusion
In the same age, blood pressure, hypertension duration and LV mass index, men have more diastolic dyssynchrony and worse myocardial strain in untreated hypertension.
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Affiliation(s)
- W C Tsai
- National Cheng Kung University Hospital, Tainan, Taiwan
| | - H R Tsai
- Madou Sinlau Christian Hospital, Internal Medicine, Tainan, Taiwan
| | - M S Huang
- National Cheng Kung University Hospital, Tainan, Taiwan
| | - W H Lee
- National Cheng Kung University Hospital, Tainan, Taiwan
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Wang SH, Yu TY, Lin YC, Liao PC, Tsai WC. Deformation of coracoacromial ligament during overhead movement as an early indicator of subacromial impingement in elite adolescent badminton players. PHYSICIAN SPORTSMED 2019; 47:427-432. [PMID: 31027445 DOI: 10.1080/00913847.2019.1613095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objectives: Deformation of the coracoacromial ligament during overhead movement has been linked to shoulder pathologies such as impingement and rotator cuff tear. We, therefore, explored this relationship in a group of elite adolescent badminton players.Method: We performed bilateral shoulder physical and ultrasonographic examination in 35 adolescent asymptomatic badminton players, 13 players with unilateral shoulder pain, and 15 non-athletes of similar age. Coracoacromial ligament deformation, defined as the maximal vertical distance between the ligament apex to a line connecting the acromion and coracoid process, was measured during shoulder abduction and internal rotation and compared within and between groups. Other ultrasonographic measurements and the incidence of shoulder pathologies were also evaluated.Result: Among badminton athletes who reported dominant shoulder pain, coracoacromial ligament deformation was significantly larger in their dominant shoulder than in their non-dominant shoulder (3.5 and 2.0 mm, respectively; p = 0.013); this difference was not present in other groups. Regardless of the presence or absence of pain, athletes displayed more coracoacromial ligament deformation and increased supraspinatus tendon thickness in their dominant shoulder than did the control group. Abnormal ultrasound findings were noted in all groups; however, the incidence was not significantly different.Conclusion: Increased coracoacromial ligament deformation during overhead movement is associated with shoulder pain in elite adolescent badminton players. Our findings may help clinicians identify athletes at risk of subacromial impingement syndrome.
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Affiliation(s)
- Szu-Heng Wang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Yin-Chou Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Pei-Chi Liao
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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18
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Liao CH, Lin LP, Yu TY, Hsu CC, Pang JHS, Tsai WC. Ibuprofen inhibited migration of skeletal muscle cells in association with downregulation of p130cas and CrkII expressions. Skelet Muscle 2019; 9:23. [PMID: 31464636 PMCID: PMC6714350 DOI: 10.1186/s13395-019-0208-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 08/13/2019] [Indexed: 11/28/2022] Open
Abstract
Background Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used to treat sports-related muscle injuries. However, NSAIDs were recently shown to impede the muscle healing process after acute injury. Migration of skeletal muscle cells is a crucial step during the muscle healing process. The present study was performed to investigate the effect and molecular mechanisms of action of ibuprofen, a commonly used NSAID, on the migration of skeletal muscle cells. Methods Skeletal muscle cells isolated from the gastrocnemius muscle of Sprague-Dawley rats were treated with ibuprofen. MTT assay (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) was used to evaluate cell viability, and cell apoptosis was evaluated by TUNEL assay, after ibuprofen treatment. Skeletal muscle cell migration and spreading were evaluated using the transwell filter migration assay and F-actin staining, respectively. The protein expression of p130cas and CrkII, which are cell migration facilitating genes, was determined by western blot analysis. The overexpression of p130cas of muscle cells was achieved by p130cas vector transfection. Results The results demonstrated that ibuprofen did not have a significant negative effect on cell viability and apoptosis. Ibuprofen inhibited the migration and spreading of skeletal muscle cells in a dose-dependent manner. Ibuprofen also dose-dependently decreased the protein expression of p130cas and CrkII. Furthermore, overexpression of p130cas resulted in the promotion of cell migration and spreading and counteracted ibuprofen-mediated inhibition. Conclusion This study suggested that ibuprofen exerts a potentially adverse effect on the migration of skeletal muscle cells by downregulating protein expression of p130cas and CrkII. These results indicate a possible mechanism underlying the possible negative effect of NSAIDs on muscle regeneration.
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Affiliation(s)
- Chih-Hao Liao
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, No.123, Dinghu Rd., Guishan Dist, Taoyuan City, 333, Taiwan
| | - Li-Ping Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, No.123, Dinghu Rd., Guishan Dist, Taoyuan City, 333, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, No.123, Dinghu Rd., Guishan Dist, Taoyuan City, 333, Taiwan
| | - Chih-Chin Hsu
- College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Jong-Hwei S Pang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, No.123, Dinghu Rd., Guishan Dist, Taoyuan City, 333, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, No.123, Dinghu Rd., Guishan Dist, Taoyuan City, 333, Taiwan. .,College of Medicine, Chang Gung University, Taoyuan City, Taiwan.
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Tsai WC, Yu TY, Chang GJ, Lin LP, Lin MS, Pang JHS. Platelet-Rich Plasma Releasate Promotes Regeneration and Decreases Inflammation and Apoptosis of Injured Skeletal Muscle. Am J Sports Med 2018; 46:1980-1986. [PMID: 29772187 DOI: 10.1177/0363546518771076] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Platelet-rich plasma (PRP) contains various cytokines and growth factors that may be beneficial to the healing process of injured muscle. Based on the authors' previous study, PRP releasate can promote proliferation and migration of skeletal muscle cells in vitro, so animal studies are performed to support the use of PRP to treat muscle injury in vivo. PURPOSE To investigate the effect of PRP releasate on regeneration of injured muscle, as well as its effect on inflammatory reaction and cell apoptosis, in the early stages of the muscle-healing process. STUDY DESIGN Controlled laboratory study. METHODS The gastrocnemius muscles of Sprague-Dawley rats were injured by partial transverse incision and then treated with PRP releasate. Hematoxylin and eosin stain was used to evaluate the healing process of injured muscle at 2, 5, and 10 days after injury. TUNEL assay was used to evaluate the cell apoptosis of injured muscle after PRP releasate treatment. Immunohistochemistry was used to stain the CD68-positive cells during the healing process. Muscle contractile properties, including fast-twitch and tetanic strength, were evaluated by electric stimulation. RESULTS The results revealed that PRP releasate treatment could enhance the muscle-healing process and decrease CD68-positive cells and apoptotic cells. Furthermore, the tetanic strength was significantly higher in injured muscle treated with PRP releasate. CONCLUSION In conclusion, PRP releasate could enhance the healing process of injured muscle and decrease inflammatory cell infiltration as well as cell apoptosis. CLINICAL RELEVANCE PRP promotes skeletal muscle healing in association with decreasing inflammation and apoptosis of injured skeletal muscle. These findings provide in vivo evidence to support the use of PRP to treat muscle injury.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan.,College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Gwo-Jyh Chang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Li-Ping Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Miao-Sui Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan
| | - Jong-Hwei S Pang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
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Lin HC, Tsai YL, Tsai WC. Rhythmic Neck Muscle Spasms and Upper Limb Muscle Myoclonic Jerks as an Unusual Initial Presentation of Posttraumatic Cervicothoracic Syringomyelia: A Case Report. PM R 2018; 10:1119-1121. [PMID: 29550415 DOI: 10.1016/j.pmrj.2018.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 02/24/2018] [Accepted: 03/04/2018] [Indexed: 11/29/2022]
Abstract
Posttraumatic syringomyelia with an initial presentation of involuntary movement is rare. We describe a 25-year-old patient who sustained complete traumatic spinal cord injury at the thoracic level and presented with rhythmic neck muscle spasms and upper limb muscle myoclonic jerks 1 month after trauma. Magnetic resonance imaging revealed syrinx formation between C3 and T1. Lumbar-peritoneal shunt and decompression were performed. The symptoms completely disappeared after surgery. This report highlights that rhythmic neck muscle spasms and upper limb muscle myoclonic jerks can be the initial and only manifestations of syringomyelia. LEVEL OF EVIDENCE: V.
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Affiliation(s)
- Hsin-Chin Lin
- Medical doctor, Department of Physical Medicine and Rehabilitation, Linkou Chang Gung memorial hospital, Taiwan
| | - Yu-Lin Tsai
- Department of Physical Medicine and Rehabilitation, Linkou Chang Gung memorial hospital, Taiwan
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Linkou Chang Gung Memorial Hospital, Chang Gung University, Taiwan; No. 5, Fuxing St, Guishan Dist, Taoyuan City 333, Taiwan
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21
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Tsai WC, Yu TY, Lin LP, Lin MS, Tsai TT, Pang JHS. Platelet rich plasma promotes skeletal muscle cell migration in association with up-regulation of FAK, paxillin, and F-Actin formation. J Orthop Res 2017; 35:2506-2512. [PMID: 28233384 DOI: 10.1002/jor.23547] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 02/10/2017] [Indexed: 02/04/2023]
Abstract
Platelet rich plasma (PRP) contains various cytokines and growth factors which may be beneficial to the healing process of injured muscle. The aim of this study was to investigate the effect and molecular mechanism of PRP on migration of skeletal muscle cells. Skeletal muscle cells intrinsic to Sprague-Dawley rats were treated with PRP. The cell migration was evaluated by transwell filter migration assay and electric cell-substrate impedance sensing. The spreading of cells was evaluated microscopically. The formation of filamentous actin (F-actin) cytoskeleton was assessed by immunofluorescence staining. The protein expressions of paxillin and focal adhesion kinase (FAK) were assessed by Western blot analysis. Transfection of paxillin small-interfering RNA (siRNAs) to muscle cells was performed to validate the role of paxillin in PRP-mediated promotion of cell migration. Dose-dependently PRP promotes migration of and spreading and muscle cells. Protein expressions of paxillin and FAK were up-regulated dose-dependently. F-actin formation was also enhanced by PRP treatment. Furthermore, the knockdown of paxillin expression impaired the effect of PRP to promote cell migration. It was concluded that PRP promoting migration of muscle cells is associated with up-regulation of proteins expression of paxillin and FAK as well as increasing F-actin formation. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:2506-2512, 2017.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan.,College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Tung-Yang Yu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan
| | - Li-Ping Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
| | - Mioa-Sui Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan
| | - Ting-Ta Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan
| | - Jong-Hwei S Pang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taoyuan City, Taiwan.,Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
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Tsai WC, Yu TY, Lin LP, Lin MS, Wu YC, Liao CH, Pang JHS. Platelet rich plasma releasate promotes proliferation of skeletal muscle cells in association with upregulation of PCNA, cyclins and cyclin dependent kinases. Platelets 2016; 28:491-497. [PMID: 27780401 DOI: 10.1080/09537104.2016.1227061] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Platelet rich plasma (PRP) contains various cytokines and growth factors which may be beneficial to the healing process of injured muscle. The purpose of this study is to investigate the effect and molecular mechanism of PRP releasate on proliferation of skeletal muscle cells. Skeletal muscle cells intrinsic to Sprague-Dawley rats were treated with PRP releasate. Cell proliferation was evaluated by 3-[4,5-Dimethylthiazol- 2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay and immunocytochemistry with Ki-67 stain. Flow cytometric analysis was used to evaluate the cell cycle progression. Western blot analysis was used to evaluate the protein expressions of PCNA, cyclin E1, cyclin A2, cyclin B1, cyclin dependent kinase (cdk)1 and cdk2. The results revealed that PRP releasate enhanced proliferation of skeletal muscle cells by shifting cells from G1 phase to S phase and G2/M phases. Ki-67 stain revealed the increase of proliferative capability after PRP releasate treatment. Protein expressions including cyclin A2, cyclin B1, cdk1, cdk2 and PCNA were up-regulated by PRP releasate in a dose-dependent manner. It was concluded that PRP releasate promoted proliferation of skeletal muscle cells in association with the up-regulated protein expressions of PCNA, cyclin A2, cyclin B1, cdk1 and cdk2.
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Affiliation(s)
- Wen-Chung Tsai
- a Department of Physical Medicine and Rehabilitation , Chang Gung Memorial Hospital at Linkou , Taoyuan City , Taiwan.,b College of Medicine , Chang Gung University , Taoyuan City , Taiwan
| | - Tung-Yang Yu
- a Department of Physical Medicine and Rehabilitation , Chang Gung Memorial Hospital at Linkou , Taoyuan City , Taiwan
| | - Li-Ping Lin
- a Department of Physical Medicine and Rehabilitation , Chang Gung Memorial Hospital at Linkou , Taoyuan City , Taiwan.,c Graduate Institute of Clinical Medical Sciences, Chang Gung University , Taoyuan City , Taiwan
| | - Miao-Sui Lin
- a Department of Physical Medicine and Rehabilitation , Chang Gung Memorial Hospital at Linkou , Taoyuan City , Taiwan
| | - Yi-Cheng Wu
- a Department of Physical Medicine and Rehabilitation , Chang Gung Memorial Hospital at Linkou , Taoyuan City , Taiwan
| | - Chih-Hao Liao
- a Department of Physical Medicine and Rehabilitation , Chang Gung Memorial Hospital at Linkou , Taoyuan City , Taiwan.,b College of Medicine , Chang Gung University , Taoyuan City , Taiwan
| | - Jong-Hwei S Pang
- a Department of Physical Medicine and Rehabilitation , Chang Gung Memorial Hospital at Linkou , Taoyuan City , Taiwan.,c Graduate Institute of Clinical Medical Sciences, Chang Gung University , Taoyuan City , Taiwan
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Chen CL, Chen CY, Chen HC, Chung CY, Tsai WC, Chen CK. Poster 65 Potential Predictors of General and Instrumented Activities of Daily Living in Patients with Stroke: A Follow-Up Study. PM R 2016; 8:S182. [PMID: 27672834 DOI: 10.1016/j.pmrj.2016.07.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Chia-Ling Chen
- Chang Gung Memorial Hospital, Taiwan, Tao-Yuan, Tao-Yuan, Taiwan, Province of China
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Chow SE, Chen CPC, Hsu CC, Tsai WC, Wang JS, Hsu NC. Quantifying cell behaviors in negative-pressure induced monolayer cell movement. Biomed J 2016; 39:50-9. [PMID: 27105598 PMCID: PMC6138425 DOI: 10.1016/j.bj.2015.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 08/17/2015] [Indexed: 11/24/2022] Open
Abstract
Background Negative-pressure of 125 mmHg (NP) has been shown to accelerate wound healing. Effects of NP on human keratinocyte behaviors during wound healing process were highlighted in this study. Methods An NP incubator incorporating the electric cell–substrate impedance sensing (ECIS) technique has been built to quantify monolayer keratinocytes movement in serum-free media at the ambient pressure (AP) and NP for 12 h. Monolayer cell motions were continuously recorded by ECIS in the frequency range of 22.5–64 kHz. Membrane capacitance (Cm), cell–substratum resistance (α), and cell–cell junction resistance (Rb) were evaluated in cells at the different pressures. Results A greater monolayer cell migration distance was found in cells at NP. Decreased cell–substratum adhesion reflected in the significantly low α (AP:NP = ∼5 Ω0.5:∼3 Ω0.5⋅cm), decreased integrin expression, and increased cell–substratum distance were seen in cells at NP. A significantly increased Cm (AP:NP = ∼4:∼8 μF/cm2) in association with increased membrane ruffling and microtubule filaments were observed early in the monolayer cell movement at NP. A progressive drop in the Rb from 1.2 Ω·cm2 to 0.8 Ω·cm2 corresponding to the gradually decreased E-cadherin expressions were observed 6 h after wound closure after NP treatment. Conclusion A quick membrane ruffling formation, an early cell–substratum separation, and an ensuing decrease in the cellular interaction occur in cells at NP. These specific monolayer cell behaviors at NP have been quantified and possibly accelerate wound healing.
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Affiliation(s)
- Shu-Er Chow
- Department of Nature Science, Center for General Studies, Chang Gung University, Taoyuan, Taiwan
| | - Carl Pai-Chu Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Taipei, Taipei, Taiwan
| | - Chih-Chin Hsu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan; School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Jong-Shyan Wang
- Institute of Rehabilitation Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ning-Chun Hsu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
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Winter R, Fazlinezhad A, Martins Fernandes S, Pellegrino M, Iriart X, Moustafa S, Stolfo D, Bieseviciene M, Patel S, Vriz O, Sarvari SI, Santos M, Berezin A, Stoebe S, Benyounes Iglesias N, De Chiara B, Soliman A, Oni O, Ricci F, Tumasyan LR, Kim KH, Popa BA, Yiangou K, Olsen RH, Cacicedo A, Monti L, Holte E, Orlic D, Trifunovic D, Nucifora G, Casalta AC, Cavalcante JL, Keramida K, Calin A, Almeida Morais L, Bandera F, Galli E, Kamal HM, Leite L, Polte CL, Martinez Santos P, Jin CN, Generati G, Reali M, Kalcik M, Cacicedo A, Nascimento H, Ferreiro Quero C, Kazum S, Madeira S, Villagra JM, Muraru D, Gobbo M, Generati G, D'andrea A, Azevedo O, Nucifora G, Cruz I, Lozano Granero VC, Stampfli SF, Marketou M, Bento D, Mohty D, Hernandez Jimenez V, Gascuena R, Ingvarsson A, Cameli M, Werther Evaldsson A, Greiner S, Michelsen MM, El Eraky AZZA, Kamal HM, D'ascenzi F, Spinelli L, Stojanovic S, Mincu RI, Vindis D, Mantovani F, Yi JE, Styczynski G, Battah AHMED, O'driscoll J, Generati G, Velasco Del Castillo S, Voilliot D, Scali MC, Garcia Campos A, Opitz B, Herold IHF, Veiga CESAR, Santos Furtado M, Khan UM, Leite L, Leite L, Leite L, Keramida K, Molnar AA, Rio P, Huang MS, Papadopoulos C, Venneri L, Onut R, Casas Rojo E, Bayat F, Aggeli C, Ben Kahla S, Abid L, Choi JH, Barreiro Perez M, Lindqvist P, Sheehan F, Vojdanparast M, Nezafati P, Teixeira R, Generati G, Bandera F, Labate V, Alfonzetti E, Guazzi M, Dinet ML, Jalal Z, Cochet H, Thambo JB, Ho TH, Shah P, Murphy K, Nelluri BK, Lee H, Wilansky S, Mookadam F, Tonet E, Merlo M, Barbati G, Gigli M, Pinamonti B, Ramani F, Zecchin M, Sinagra G, Vaskelyte JJ, Mizariene V, Lesauskaite V, Verseckaite R, Karaliute R, Jonkaitiene R, Li L, Craft M, Danford D, Kutty S, Pellegrinet M, Zito C, Carerj S, Di Bello V, Cittadini A, Bossone E, Antonini-Canterin F, Rodriguez M, Sitges M, Sepulveda-Martinez A, Gratacos E, Bijnens B, Crispi F, Leite L, Martins R, Baptista R, Barbosa A, Ribeiro N, Oliveira A, Castro G, Pego M, Samura T, Kremzer A, Tarr A, Pfeiffer D, Hagendorff A, Van Der Vynckt C, Gout O, Devys JM, Cohen A, Musca F, D'angelo L, Cipriani MG, Parolini M, Rossi A, Santambrogio GM, Russo C, Giannattasio C, Moreo A, Moharram M, Gamal A, Reda A, Adebiyi A, Aje A, Aquilani R, Dipace G, Bucciarelli V, Bianco F, Miniero E, Scipioni G, De Caterina R, Gallina S, Adamyan KG, Chilingaryan AL, Tunyan LG, Cho JY, Yoon HJ, Ahn Y, Jeong MH, Cho JG, Park JC, Popa A, Cerin G, Azina CH, Yiangou A, Georgiou C, Zitti M, Ioannides M, Chimonides S, Pedersen LR, Snoer M, Christensen TE, Ghotbi AA, Hasbak P, Kjaer A, Haugaard SB, Prescott E, Velasco Del Castillo S, Gomez Sanchez V, Anton Ladislao A, Onaindia Gandarias J, Rodriguez Sanchez I, Jimenez Melo O, Garcia Cuenca E, Zugazabeitia Irazabal G, Romero Pereiro A, Nardi B, Di Giovine G, Malanchini G, Scardino C, Balzarini L, Presbitero P, Gasparini GL, Tesic M, Zamaklar-Trifunovic D, Vujisic-Tesic B, Borovic M, Milasinovic D, Zivkovic M, Kostic J, Belelsin B, Ostojic M, Krljanac G, Savic L, Asanin M, Aleksandric S, Petrovic M, Zlatic N, Lasica R, Mrdovic I, Muser D, Zanuttini D, Tioni C, Bernardi G, Spedicato L, Proclemer A, Galli E, Szymanski C, Salaun E, Lavoute C, Haentjens J, Tribouilloy C, Mancini J, Donal E, Habib G, Delgado-Montero A, Dahou A, Caballero L, Rijal S, Gorcsan J, Monin JL, Pibarot P, Lancellotti P, Kouris N, Kostopoulos V, Giannaris V, Trifou E, Markos L, Mihalopoulos A, Mprempos G, Olympios CD, Mateescu AD, Rosca M, Beladan CC, Enache R, Gurzun MM, Varga P, Calin C, Ginghina C, Popescu BA, Galrinho A, Branco L, Gomes V, Timoteo AT, Daniel P, Rodrigues I, Rosa S, Fragata J, Ferreira R, Generati G, Pellegrino M, Carbone F, Labate V, Alfonzetti E, Guazzi M, Leclercq C, Samset E, Donal E, Oraby MA, Eleraky AZ, Yossuef MA, Baptista R, Teixeira R, Ribeiro N, Oliveira AP, Barbosa A, Castro G, Martins R, Elvas L, Pego M, Gao SA, Lagerstrand KM, Johnsson ÅA, Bech-Hanssen O, Vilacosta I, Batlle Lopez E, Sanchez Sauce B, Jimenez Valtierra J, Espana Barrio E, Campuzano Ruiz R, De La Rosa Riestra A, Alonso Bello J, Perez Gonzalez F, Wan S, Sun JP, Lee AP, Bandera F, Pellegrino M, Carbone F, Labate V, Alfonzetti E, Guazzi M, Cimino S, Salatino T, Silvetti E, Mancone M, Pennacchi M, Giordano A, Sardella G, Agati L, Yesin M, Gunduz S, Gursoy MO, Astarcioglu MA, Karakoyun S, Bayam E, Cersit S, Ozkan M, Velasco Del Castillo S, Gomez Sanchez V, Anton Ladislao A, Onaindia Gandarias J, Rodriguez Sanchez I, Jimenez Melo O, Quintana Razcka O, Romero Pereiro A, Zugazabeitia Irazabal G, Braga M, Flores L, Ribeiro V, Melao F, Dias P, Maciel MJ, Bettencourt P, Mesa Rubio MD, Ruiz Ortiz M, Delgado Ortega M, Sanchez Fernandez J, Duran Jimenez E, Morenate Navio C, Romero M, Pan M, Suarez De Lezo J, Vaturi M, Weisenberg D, Monakier D, Valdman A, Vaknin- Assa H, Assali A, Kornowski R, Sagie A, Shapira Y, Ribeiras R, Abecasis J, Teles R, Castro M, Tralhao A, Horta E, Brito J, Andrade M, Mendes M, Avegliano G, Ronderos R, Matta MG, Camporrotondo M, Castro F, Albina G, Aranda A, Navia D, Siciliano M, Migliore F, Cavedon S, Folino F, Pedrizzetti G, Bertaglia M, Corrado D, Iliceto S, Badano LP, Merlo M, Stolfo D, Losurdo P, Ramani F, Barbati G, Pivetta A, Pinamonti B, Sinagra GF, Di Lenarda A, Bandera F, Pellegrino M, Labate V, Carbone F, Alfonzetti E, Guazzi M, Di Palma E, Baldini L, Verrengia M, Vastarella R, Limongelli G, Bossone E, Calabro' R, Russo MG, Pacileo G, Cruz I, Correia E, Bento D, Teles L, Lourenco C, Faria R, Domingues K, Picarra B, Marques N, Muser D, Gianfagna P, Morocutti G, Proclemer A, Gomes AC, Lopes LR, Stuart B, Caldeira D, Morgado G, Almeida AR, Canedo P, Bagulho C, Pereira H, Pardo Sanz A, Marco Del Castillo A, Monteagudo Ruiz JM, Rincon Diaz LM, Ruiz Rejon F, Casas E, Hinojar R, Fernandez-Golfin C, Zamorano Gomez JL, Erhart L, Staehli BE, Kaufmann BA, Tanner FC, Kontaraki J, Parthenakis F, Maragkoudakis S, Zacharis E, Patrianakos A, Vardas P, Domingues K, Correia E, Lopes L, Teles L, Picarra B, Magalhaes P, Faria R, Lourenco C, Azevedo O, Boulogne C, Magne J, Damy T, Martin S, Boncoeur MP, Aboyans V, Jaccard A, Saavedra Falero J, Alberca Vela MT, Molina Blazquez L, Mata Caballero R, Serrano Rosado JA, Elviro R, Di Gioia C, Fernandez Rozas I, Manzano MC, Martinez Sanchez JI, Molina M, Palma J, Werther Evaldsson A, Radegran G, Stagmo M, Waktare J, Roijer A, Meurling CJ, Righini FM, Sparla S, Di Tommaso C, Focardi M, D'ascenzi F, Tacchini D, Maccherini M, Henein M, Mondillo S, Ingvarsson A, Waktare J, Thilen U, Stagmo M, Roijer A, Radegran G, Meurling C, Jud A, Aurich M, Katus HA, Mereles D, Faber R, Pena A, Mygind ND, Suhrs HE, Zander M, Prescott E, Handoka NESRIN, Ghali MONA, Eldahshan NAHED, Ibrahim AHMED, Al-Eraky AZ, El Attar MA, Omar AS, Pelliccia A, Alvino F, Solari M, Cameli M, Focardi M, Bonifazi M, Mondillo S, Giudice CA, Assante Di Panzillo E, Castaldo D, Riccio E, Pisani A, Trimarco B, Deljanin Ilic M, Ilic S, Magda LS, Florescu M, Velcea A, Mihalcea D, Chiru A, Popescu BO, Tiu C, Vinereanu D, Hutyra M, Cechakova E, Littnerova S, Taborsky M, Lugli R, Bursi F, Fabbri M, Modena MG, Stefanelli G, Mussini C, Barbieri A, Youn HJ, O JH, Yoon HJ, Jung HO, Shin GJ, Rdzanek A, Pietrasik A, Kochman J, Huczek Z, Milewska A, Marczewska M, Szmigielski CA, Abd Eldayem SOHA, El Magd El Bohy ABO, Slee A, Peresso V, Nazir S, Sharma R, Bandera F, Pellegrino M, Labate V, Carbone F, Alfonzetti E, Guazzi M, Anton Ladislao A, Gomez Sanchez V, Cacidedo Fernandez Bobadilla A, Onaindia Gandarias JJ, Rodriguez Sanchez I, Romero Pereira A, Quintana Rackza O, Jimenez Melo O, Zugazabeitia Irazabal G, Huttin O, Venner C, Deballon R, Manenti V, Villemin T, Olivier A, Sadoul N, Juilliere Y, Selton-Suty C, Simioniuc A, Mandoli GE, Dini FL, Marzilli M, Picano E, Martin-Fernandez M, De La Hera Galarza JM, Corros-Vicente C, Leon-Aguero V, Velasco-Alonso E, Colunga-Blanco S, Fidalgo-Arguelles A, Rozado-Castano J, Moris De La Tassa C, Stelzmueller ME, Wisser W, Reichenfelser W, Mohl W, Saporito S, Mischi M, Bouwman RA, Van Assen HC, Van Den Bosch HCM, De Lepper A, Korsten HHM, Houthuizen P, Rodrigues A, Leal G, Silvestre O, Andrade J, Hjertaas JJ, Greve G, Matre K, Teixeira R, Baptista R, Barbosa A, Ribeiro N, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Teixeira R, Baptista R, Barbosa A, Ribeiro N, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Teixeira R, Baptista R, Barbosa A, Oliveira AP, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Kouris N, Kostopoulos V, Markos L, Olympios CD, Kovacs A, Tarnoki AD, Tarnoki DL, Kolossvary M, Apor A, Maurovich-Horvat P, Jermendy G, Sengupta P, Merkely B, Viveiros Monteiro A, Galrinho A, Pereira-Da-Silva T, Moura Branco L, Timoteo A, Abreu J, Leal A, Varela F, Cruz Ferreira R, Yang LT, Tsai WC, Mpaltoumas K, Fotoglidis A, Triantafyllou K, Pagourelias E, Kassimatis E, Tzikas S, Kotsiouros G, Mantzogeorgou E, Vassilikos V, Calicchio F, Manivarmane R, Pareek N, Baksi J, Rosen S, Senior R, Lyon AR, Khattar RS, Marinescu C, Onciul S, Zamfir D, Tautu O, Dorobantu M, Carbonell San Roman A, Rincon Diez LM, Gonzalez Gomez A, Fernandez Santos S, Lazaro Rivera C, Moreno Vinues C, Sanmartin Fernandez M, Fernandez-Golfin C, Zamorano Gomez JL, Alirezaei T, Karimi AS, Kakiouzi V, Felekos I, Panagopoulou V, Latsios G, Karabela M, Petras D, Tousoulis D, Abid L, Abid D, Kammoun S, Ben Kahla S, Lee JW, Martin Fernandez M, Costilla Garcia SM, Diaz Pelaez E, Moris De La Tassa C. Poster session 3The imaging examinationP646Simulator-based testing of skill in transthoracic echoP647Clinical and echocardiographic characteristics of isolated left ventricular non-compactionP648Appropriate use criteria of transthoracic echocardiography and its clinical impact in an aged populationAnatomy and physiology of the heart and great vesselsP649Prevalence and determinants of exercise oscillatory ventilation in the EUROEX trial populationAssessment of diameters, volumes and massP650Left atrial remodeling after percutaneous left atrial appendage closureP651Global atrial performance with tyrosine kinase inhibitors in metastatic renal cell carcinomaP652Early right ventricular response to cardiac resynchronization therapy: impact on clinical outcomesP653Parameters of speckle-tracking echocardiography and biomechanical values of a dilative ascending aortaAssessments of haemodynamicsP654Right atrial hemodynamics in infants and children: observations from 3-dimensional echocardiography derived right atrial volumesAssessment of systolic functionP655One-point carotid wave intensity predicts cardiac mortality in patients with congestive heart failure and reduced ejection fractionP656Persistence of cardiac remodeling in adolescents with previous fetal growth restrictionP6572D speckle tracking-derived left ventricle global longitudinal strain and left ventricular dysfunction stages: a useful discriminator in moderate-to-severe aortic regurgitationP658Global longitudinal strain and strain rate in type two diabetes patients with chronic heart failure: relevance to circulating osteoprotegerinP659Analysis of left ventricular function in patients before and after surgical and interventional mitral valve therapyP660Left ventricular end-diastolic volume is complementary with global longitudinal strain for the prediction of left ventricular ejection fraction in echocardiographic daily practiceP661Left ventricular assist device, right ventricle function, and selection bias: the light side of the moonP662Assessment of right ventricular function in patients with anterior ST elevation myocardial infarction; a 2-d speckle tracking studyP663Right ventricular systolic function assessment in sickle cell anaemia using echocardiographyAssessment of diastolic functionP664Prognostic value of transthoracic cardiopulmonary ultrasound in cardiac surgery intensive care unitP665Comparative efficacy of renin-angiotensin system modulators on prognosis, right heart and left atrial parameters in patients with chronic heart failure and preserved left ventricular systolic functionP666Left atrial volume index is the most significant diastolic functional parameter of hemodynamic burden as measured by NT-proBNP in acute myocardial infarctionP667Preventive echocardiographic screening. preliminary dataP668Assessment of the atrial electromechanical delay and the mechanical functions of the left atrium in patients with diabetes mellitus type IIschemic heart diseaseP669Coronary flow velocity reserve by echocardiography as a measure of microvascular function: feasibility, reproducibility and agreement with PET in overweight patients with coronary artery diseaseP670Influence of cardiovascular risk in the occurrence of events in patients with negative stress echocardiographyP671Prevalence of transmural myocardial infarction and viable myocardium in chronic total occlusion (CTO) patientsP672The impact of the interleukin 6 receptor antagonist tocilizumab on mircovascular dysfunction after non st elevation myocardial infarction assessed by coronary flow reserve from a randomized studyP673Impact of manual thrombus aspiration on left ventricular remodeling: the echocardiographic substudy of the randomized Physiologic Assessment of Thrombus Aspirtion in patients with ST-segment ElevatioP674Acute heart failure in STEMI patients treated with primary percutaneous coronary intervention is related to transmural circumferential myocardial strainP675Long-term prognostic value of infarct size as assessed by cardiac magnetic resonance imaging after a first st-segment elevation myocardial infarctionHeart valve DiseasesP676Prognostic value of LV global longitudinal strain in aortic stenosis with preserved LV ejection fractionP677Importance of longitudinal dyssynchrony in low flow low gradient severe aortic stenosis patients undergoing dobutamine stress echocardiography. a multicenter study (on behalf of the HAVEC group)P678Predictive value of left ventricular longitudinal strain by 2D Speckle Tracking echocardiography, in asymptomatic patients with severe aortic stenosis and preserved ejection fractionP679Clinical and echocardiographic characteristics of the flow-gradient patterns in patients with severe aortic stenosis and preserved left ventricular ejection fractionP6802D and 3D speckle tracking assessment of left ventricular function in severe aortic stenosis, a step further from biplane ejection fractionP681Functional evaluation in aortic stenosis: determinant of exercise capacityP682Left ventricular mechanics: novel tools to evaluate left ventricular function in patients with primary mitral regurgitationP683Plasma B-type natriuretic peptide level in patients with isolated rheumatic mitral stenosisP684Quantitative assessment of severity in aortic regurgitation and the influence of elastic proprieties of thoracic aortaP685Characterization of chronic aortic and mitral regurgitation using cardiovascular magnetic resonanceP686Functional mitral regurgitation: a warning sign of underlying left ventricular systolic dysfunction in heart failure with preserved ejection fraction.P687Secondary mitral valve tenting in primary degenerative prolapse quantified by three-dimensional echocardiography predicts regurgitation recurrence after mitral valve repairP688Advanced heart failure with reduced ejection fraction and severe mitral insufficiency compensate with a higher oxygen peripheral extraction to a reduced cardiac output vs oxygen uptake response to maxP689Predictors of acute procedural success after percutaneous mitraclip implantation in patients with moderate-to-severe or severe mitral regurgitation and reduced ejection fractionP690The value of transvalvular gradients obtained by transthoracic echocardiography in estimation of severe paravalvular leakage in patients with mitral prosthetic valvesP691Characteristics of infective endocarditis in a non tertiary hospitalP692Infective endocarditis: predictors of severity in a 3-year retrospective analysisP693New echocardiographic predictors of early recurrent mitral functional regurgitation after mitraclip implantationP694Transesophageal echocardiography can be reliably used for the allocation of patients with severe aortic stenosis for tras-catheter aortic valve implantationP695Annular sizing for transcatheter aortic valve selection. A comparison between computed tomography and 3D echocardiographyP696Association between aortic dilatation, mitral valve prolapse and atrial septal aneurysm: first descriptive study.CardiomyopathiesP698Cardiac resynchronization therapy by multipoint pacing improves the acute response of left ventricular mechanics and fluid dynamics: a three-dimensional and particle image velocimetry echo studyP699Long-term natural history of right ventricular function in dilated cardiomyopathy: innocent bystander or leading actor?P700Right to left ventricular interdependence at rest and during exercise assessed by the ratio between pulmonary systolic to diastolic time in heart failure reduced ejection fractionP701Exercise strain imaging demonstrates impaired right ventricular contractile reserve in patients with hypertrophic cardiomyopathyP702Prevalence of overt left ventricular dysfunction (burn-out phase) in a portuguese population of hypertrophic cardiomyopathy, a multicentre studyP703Systolic and diastolic myocardial mechanics in hypertrophic cardiomyopathy and their link to the extent of hypertrophy, replacement fibrosis and interstitial fibrosisP704Multimodality imaging and genotype-phenotype associations in a cohort of patients with hypertrophic cardiomyopathy studied by next generation sequencing and cardiac magnetic resonanceP705Sudden cardiac death risk assessment in apical hypertrophic cardiomyopathy: do we need to add MRI to the equation?P706Prognostic value of left ventricular ejection fraction, proBNP, exercise capacity, and NYHA functional class in patients with left ventricular non-compaction cardiomyopathyP707The anti-hypertrophic microRNAs miR-1, miR-133a and miR-26b and their relationship to left ventricular hypertrophy in patients with essential hypertensionP708Prevalence of left ventricular systolic dysfunction in a portuguese population of left ventricular non-compaction cardiomyopathy, a multicentre studyP709Assessment of systolic and diastolic features in light chain amyloidosis: an echocardiographic and cardiac magnetic resonance studyP710Morbid obesity-associated hypertension identifies bariatric surgery best responders: Clinical and echocardiographic follow up studyP711Echocardiographic markera for overhydration in patients under haemodialysisP712Gender aspects of right ventricular size and function in clinically stable heart transplant patientsP713Evidence of cardiac stem cells from the left ventricular apical tip in patients undergone LVAD implant: a comparative strain-ultrastructural studySystemic diseases and other conditionsP714Speckle tracking assessment of right ventricular function is superior for differentiation of pressure versus volume overloaded right ventricleP715Prognostic value of pulmonary arterial pressure: analysis in a large dataset of timely matched non-invasive and invasive assessmentsP716Effect of the glucagon-like peptide-1 analogue liraglutide on left ventricular diastolic and systolic function in patients with type 2 diabetes: a randomised, single-blinded, crossover pilot studyP717Tissue doppler evaluation of left ventricular functions, left atrial mechanical functions and atrial electromechanical delay in juvenile idiopathic arthritisP718Echocardiographic detection of subclinical left ventricular dysfunction in patients with rheumatoid arthritisP719Left ventricular strain values are unaffected by intense training: a longitudinal, speckle-tracking studyP720Diastolic left ventricular function in autosomal dominant polycystic kidney disease: a matched-cohort, speckle-tracking echocardiographic studyP721Relationship between adiponectin level and left ventricular mass and functionP722Left atrial function is impaired in patients with multiple sclerosisMasses, tumors and sources of embolismP723Paradoxical embolization to the brain in patients with acute pulmonary embolism and confirmed patent foramen ovale with bidirectional shunt, results of prospective monitoringP724Following the European Society of Cardiology proposed echocardiographic algorithm in elective patients with clinical suspicion of infective endocarditis: diagnostic yield and prognostic implicationsP725Metastatic cardiac18F-FDG uptake in patients with malignancy: comparison with echocardiographic findingsDiseases of the aortaP726Echocardiographic measurements of aortic pulse wave velocity correlate well with invasive methodP727Assessment of increase in aortic and carotid intimal medial thickness in adolescent type 1 diabetic patientsStress echocardiographyP728Determinants and prognostic significance of heart rate variability in renal transplant candidates undergoing dobutamine stress echocardiographyP729Pattern of cardiac output vs O2 uptake ratio during maximal exercise in heart failure with reduced ejection fraction: pathophysiological insightsP730Prognostic value and predictive factors of cardiac events in patients with normal exercise echocardiographyP731Right ventricular mechanics during exercise echocardiography: normal values, feasibility and reproducibility of conventional and new right ventricular function parametersP732The added value of exercise-echo in heart failure patients: assessing dynamic changes in extravascular lung waterP733Applicability of appropriate use criteria of exercise stress echocardiography in real-life practice: what have we improved with new documents?Transesophageal echocardiographyP7343D-TEE guidance in percutaneous mitral valve interventions correcting mitral regurgitationContrast echocardiographyP735Pulmonary transit time by contrast enhanced ultrasound as parameter for cardiac performance: a comparison with magnetic resonance imaging and NT-ProBNPReal-time three-dimensional TEEP736Optimal parameter selection for anisotropic diffusion denoising filters applied to aortic valve 4d echocardiographsP737Left ventricle systolic function in non-alcoholic cirrhotic candidates for liver transplantation: a three-dimensional speckle-tracking echocardiography studyTissue Doppler and speckle trackingP738Optimizing speckle tracking echocardiography strain measurements in infants: an in-vitro phantom studyP739Usefulness of vascular mechanics in aortic degenerative valve disease to estimate prognosis: a two dimensional speckle tracking studyP740Vascular mechanics in aortic degenerative valve disease: a two dimensional speckle-tracking echocardiography studyP741Statins and vascular load in aortic valve disease patients, a speckle tracking echocardiography studyP742Is Left Bundle Branch Block only an electrocardiographic abnormality? Study of LV function by 2D speckle tracking in patients with normal ejection fractionP743Dominant inheritance of global longitudinal strain in a population of healthy and hypertensive twinsP744Mechanical differences of left atria in paroxysmal atrial fibrillation: A speckle-tracking study.P745Different distribution of myocardial deformation between hypertrophic cardiomyopathy and aortic stenosisP746Left atrial mechanics in patients with chronic renal failure. Incremental value for atrial fibrillation predictionP747Subclinical myocardial dysfunction in cancer patients: is there a direct effect of tumour growth?P748The abnormal global longitudinal strain predicts significant circumflex artery disease in low risk acute coronary syndromeP7493D-Speckle tracking echocardiography for assessing ventricular funcion and infarct size in young patients after acute coronary syndromeP750Evaluation of left ventricular dyssynchrony by echocardiograhy in patients with type 2 diabetes mellitus without clinically evident cardiac diseaseP751Differences in myocardial function between peritoneal dialysis and hemodialysis patients: insights from speckle tracking echoP752Appraisal of left atrium changes in hypertensive heart disease: insights from a speckle tracking studyP753Left ventricular rotational behavior in hypertensive patients: Two dimensional speckle tracking imaging studyComputed Tomography & Nuclear CardiologyP754Effectiveness of adaptive statistical iterative reconstruction of 64-slice dual-energy ct pulmonary angiography in the patients with reduced iodine load: comparison with standard ct pulmonary angiograP755Clinical prediction model to inconclusive result assessed by coronary computed tomography angiography. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Almodares Q, Cordeiro F, Van Der Ven JPG, Garweg C, Wahi S, Mo VY, Beladan CC, Yang LT, Wallentin Guron C, Thurin A, Fu M, Thunstrom E, Johansson MC, Leao S, Moz M, Magalhaes P, Trigo J, Mateus PS, Ferreira A, Moreira JI, Bossers S, Korteweg L, Duppen N, Kapusta L, Kuipers I, Kroft L, Ten Harkel A, Van Iperen G, Helbing W, Haemers P, De Buck S, Willems R, Ector J, Chong A, Bellucci BM, Fisher JM, Balekian AA, Mateescu AD, Predescu L, Calin A, Rosca M, Inta O, Egher L, Platon P, Ginghina C, Popescu BA, Tsai WC. Moderated Posters session: there are other cardiac chambers than the left ventricleP977Right atrial enlargement is a predictor of five-year mortality in elderly patients with heart failureP978Left atrial enlargement and long-term prognosis of ST-segment elevation myocardial infarction: comparison of indexed volume and area.P979Atrial function in total cavopulmonary connection: differences between ILT and ECC and relation with exercise capacityP980Imaging of the right atrium anatomy using 3D rotational angiography during ablation: comparison between right atrial flutter and atrioventricular nodal reentrant tachycardiaP983Direct comparison of non-invasive estimation of mean pulmonary artery pressure with right heart catheter measurements - which echocardiographic technique is best?P984PAAT, RVET, and Vmax versus RVSP to predict pulmonary hypertensionP985Correlates of brain natriuretic peptide in patients with pulmonary hypertension and pressure versus volume right ventricular overload: an echocardiographic-catheterization studyP986Incremental prognostic value of echocardiographic parameters over CHA2DS2-VASc score in atrial fibrillation. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bucciarelli V, Avenatti E, Rosner SJ, Cherneva ZHCH, Li H, Surkova EA, Degiovanni A, Ortiz Garrido A, Mihaila S, Tamulenaite E, Amorouayeche FZ, Kolesnyk MY, Garcia Campos A, Savcioglu AS, Filipiak D, Kuusisto JK, Torbas O, Kupczynska K, Tountas X, Ionin VA, Cescau A, Altin C, Ferreiro Quero C, Lowery C, Najih H, Valuckiene Z, Onciul S, Yang LT, Baricevic Z, Ghulam Ali S, Bianco F, Izzicupo P, Ghinassi B, Di Baldassarre A, Gallina S, Milazzo V, Milan A, Patel A, Kuvin J, Pandian N, Orban M, Nadjiri J, Lesevic H, Hadamitzky M, Sonne C, Kuneva ZK, Vasilev DV, Yuan L, Xie MX, Jin XY, Muraru D, Grapsa J, Donal E, Lancellotti P, Habib G, Badano LP, Buffa MC, De Vecchi F, Prenna E, Boggio E, Marino P, De La Chica J, Cuenca Peiro V, Picazo Angelin B, Conejo Munoz L, Narbona I, Anderica JR, De Mora M, Zabala Arguelles JI, Velcea A, Matei L, Andronic A, Calin S, Rimbas R, Muraru D, Badano LP, Vinereanu D, Ovsianas J, Valuckiene Z, Jurkevicius R, Latreche S, Benkhedda S, Dzyak GV, Riznyk YY, Kovalyova OV, Velasco-Alonso E, Colunga-Blanco S, Martin-Fernandez M, Corros-Vicente C, Rodriguez-Suarez ML, Leon-Aguero V, De La Hera Galarza JM, Safak O, Nazli C, Akyildiz Akcay F, Yakar Tuluce S, Kahya Eren N, Ozdemir E, Kocabas U, Kasprzak JD, Lipiec P, Jarvinen VM, Sinisalo JP, Sirenko YU, Radchenko G, Rekovets O, Kushnir S, Michalski BW, Miskowiec D, Kasprzak JD, Wdowiak-Okrojek K, Wejner-Mik P, Lipiec P, Beldekos D, Protogerou A, Gournizakis A, Panopoulos S, Theodosis-Georgilas A, Fousas S, Sfikakis P, Soboleva AV, Listopad OV, Nifontov SE, Polyakova EA, Belyaeva OD, Baranova EI, Shlyachto EV, Baudet M, Cohen-Solal A, Logeart D, Sakallioglu O, Aydin E, Yilmaz M, Sade LE, Muderrisoglu H, Mesa Rubio MD, Ruiz Ortiz M, Delgado Ortega M, Sanchez Fernandez J, Duran Jimenez E, Morenate Navio C, Romero M, Pan M, Suarez De Lezo J, Frenneaux MP, Parasuraman SK, Rudd AE, Srinivasan J, Elbaghdadi D, Laarej A, Allouch M, Azzouzi L, Habbal R, Ovsianas J, Mizariene V, Ablonskyte-Dudoniene R, Jurkevicius R, Cucchini U, Miglioranza MH, Dorobantu M, Iliceto S, Badano LP, Muraru D, Tsai WC, Cikes M, Ljubas Macek J, Skoric B, Skorak I, Jurin H, Samardzic J, Gasparovic H, Milicic D, Separovic Hanzevacki J, Fusini L, Tamborini G, Gripari P, Muratori M, Celeste F, Carminati MC, Alamanni F, Pepi M. HIT Poster session 2P486The effect of short term aerobic exercise and ACE polymorphism on cardiovascular remodeling in healthy sedentary postmenopausal womenP487Are there predictors of malignant progression of aortic stenosis severity?P488Quantitative und semiquantitative parameters in the classification of aortic insufficiency: a 3D-echocardiography and magnet resonance imaging studyP489Vascular indicies surrogate markers for left ventricular dysfunctionP490Left ventricular systolic strain data does not require indexation to cavity size in mitral valve diseasesP491Impact of EACVI grant programme on career progression of grant winnersP492Early predictor of atrial fibrillation recurrence after electrical cardioversion: diastolic parameters come firstP493Echocardiographic diagnosis of arrhythmias in the fetusP4943D echocardiography is a fast-learning and a more reliable method compared with 2D echocardiography for the assessment of left ventricular volumes and ejection fraction in patients with heart failureP495Right ventricular mechanics in functional ischemic mitral regurgitation in acute inferior myocardial infarctionP496Added value of two dimentional strain in assessement of left ventricular systolic function in rheumatic mitral stenosis patients with normal ejection fractionP497Left ventricular myocardial deformation in arterial hypertension with different types of glucose metabolism disordersP498Epicardial to pericardial adipose tissue ratio: predicting myocardial ischemia in patients referred for exercise stress echocardiographyP499Echocardiographic evaluation of the patients with asd after percutaneous closureP500Screening for carotid artery stenosis with the use of pocket-size imaging device equipped with linear probeP501LAD correlates poorly with LAVIP502Predictors associated with the diastolic dysfunction formation in patients with moderate hypertensionP503Assessment of left atrial function by speckle tracking analysis in transthoracic echocardiography for predicting the presence of left atrial appendage thrombus in patients with atrial fibrillationP504can echocardiography detect subclinical myocardial damage in the layers of myocardial wall? (The first study in a large population with known inflammatory disease)P505Epicardial fat thickness and galectin 3 in patients with atrial fibrillation and metabolic syndromeP506Left ventricular reverse remodeling in heart failure: a new obesity paradox?P507Epicardial adipose tissue and carotid intima media thickness in hemodialysis patients; single center experienceP508Echocardiographic parameters of mitral valve remodeling associated with poor clinical outcome in high risk patients with functional mitral regurgitation after Mitraclip implantationP509Prevalence of valve disease in a community population over the age of 60P510Discordance between mitral valve area and mean transmitral pressure gradient in mitral stenosis: Is mean gradient marker of the severity or parameter of tolerance in severe mitral stenosis?P511Ischemic mitral regurgitation is associated with impaired radial and circumferential myocardial deformation in acute inferoposterior myocardial infarctionP512The importance of early left atrial functional changes in predicting long term left ventricular remodeling in patients surviving a ST elevation myocardial infarctionP513Remodeling of myocardial deformation after mitral valve surgeryP514Global longitudinal peak systolic strain is reduced shortly after heart transplantationP515Detailed transthoracic and transesophageal echocardiographic analysis of mitral leaflets in patient undergoing mitral valve repair. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tsai WC, Yu TY, Lin LP, Cheng ML, Chen CL, Pang JHS. Prevention of Simvastatin-Induced Inhibition of Tendon Cell Proliferation and Cell Cycle Progression by Geranylgeranyl Pyrophosphate. Toxicol Sci 2015; 149:326-34. [PMID: 26577051 DOI: 10.1093/toxsci/kfv239] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Statins have been reported to induce tendinopathy and even tendon rupture. The present study was designed to investigate the potential molecular mechanism underlying the adverse effect of simvastatin on tendon cells. An in vitro tendon healing model was performed using tendon cells isolated from rat Achilles tendons. The viability of tendon cells and cell cycle progression were examined by the MTT assay and flow cytometric analysis, respectively. Immunofluorescent staining for Ki-67 was used to assess the proliferation activity of tendon cells. Western blot analysis and coimmunoprecipitation was used to determine the protein expression of cell cycle-related proteins. To investigate the potential mechanism underlying the effect of statins on tendon cells, mevalonate, farnesyl pyrophosphate (FPP), or geranylgeranyl pyrophosphate (GGPP) was added to simvastatin-treated tendon cells. Simvastatin inhibited the in vitro tendon healing model and tendon cell proliferation in a dose-dependent manner. Immunofluorescent staining demonstrated reduced ki-67 expression in simvastatin-treated tendon cells. Furthermore, simvastatin induced cell cycle arrest at the G1 phase. The expression levels of cdk1, cdk2, cyclin A, and cyclin E were downregulated by simvastatin in a dose-dependent manner. The inhibitory effect of simvastatin was proved to mediate the reduction of mevalonate, and the addition of exogenous GGPP completely prevented the inhibitory effect of simvastatin on tendon cells. The present study demonstrated, for the first time, the molecular mechanism underlying simvastatin-induced tendinopathy or tendon rupture. GGPP was shown to prevent the adverse effect of simvastatin in tendon cells without interfering with its cholesterol-reducing efficacy.
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Affiliation(s)
- Wen-Chung Tsai
- *Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City, Taiwan; College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Tung-Yang Yu
- *Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City, Taiwan
| | - Li-Ping Lin
- *Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City, Taiwan
| | - Mei-Ling Cheng
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Cheng-Lun Chen
- *Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan City, Taiwan
| | - Jong-Hwei S Pang
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan
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Wu KPH, Chen CK, Lin SC, Pei YC, Lin RH, Tsai WC, Fuk-Tan Tang S. Botulinum Toxin type A injections for patients with painful hallux valgus: a double-blind, randomized controlled study. Clin Neurol Neurosurg 2015; 129 Suppl 1:S58-62. [PMID: 25683315 DOI: 10.1016/s0303-8467(15)30014-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hallux valgus (HV) related pain and disability remains a medical challenge to date. We have evaluated the therapeutic effect of intramuscular Botulinum Toxin type A (BTX-A) injection on painful HV in a double-blind randomized controlled trial. Sixteen patients having painful HV in at least one foot from the Department of Physical Medicine and Rehabilitation at a medical center in northern Taiwan have participated. Patients were randomized into two groups to receive intramuscular injections of either BTX-A or normal saline (NS) to the oblique and transverse heads of the adductor hallucis, flexor hallucis brevis and extensor hallucis longus muscles. Primary outcome measurements were selected from the Taiwan Chinese version of the Foot Function Index subscales on pain (questions 1-6, 9) and disability (question 10-18). The secondary outcome measurement was the HV angle. Patients were assessed at baseline and at 1, 2, 3, and 6 months after treatment. The demographic data and measurements were comparable between the two groups at baseline (p>0.05). BTX-A and NS reduced pain and disability one month after injection. Pain reduction induced by BTX-A injection lasted for at least 6 months while that induced by NS lasted for only 1 month. In addition, patients in the BTX-A group showed greater improvement in pain score (p<0.001), disability score (p<0.05), and HV angle (p<0.05) than patients in the NS group. The results reflected that HV-related muscle injection of BTX-A resulted in a marked reduction in pain for up to 6 months.
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Affiliation(s)
- Katie Pei-Hsuan Wu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taiwan 333; School of Medicine, Chang Gung University, Taiwan 333
| | - Chih-Kuang Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taiwan 333; School of Medicine, Chang Gung University, Taiwan 333
| | - Shih-Cherng Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taiwan 333
| | - Yu-Cheng Pei
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taiwan 333; School of Medicine, Chang Gung University, Taiwan 333; Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan 333
| | - Ruei-Heng Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taiwan 333
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taiwan 333; School of Medicine, Chang Gung University, Taiwan 333
| | - Simon Fuk-Tan Tang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taiwan 333; School of Medicine, Chang Gung University, Taiwan 333.
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Fan YT, Wu CY, Tsai WC, Lin KC. Effects of lateralized light flash and color on unilateral neglect. Disabil Rehabil 2015; 37:2400-2406. [PMID: 25893400 DOI: 10.3109/09638288.2015.1031284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE Bottom-up-based sensory stimulation has been useful in promoting recovery from post-stroke neglect. Light and color are salient stimuli for guiding our orienting behaviors and influence the degree of spatial bias. This study evaluated the effects of lateralized light flash and color on spatial bias in unilateral neglect (UN). METHOD We enrolled 15 individuals with UN as a consequence of a right hemispheric stroke of less than 65 d. This was a 3 × 3 design study with three conditions of lens color (colorless, red, and blue) and three conditions of flash light locations (no flash, left, and right). RESULTS All participants showed a decrease in ipsilesional spatial bias under left-side light flash and a red lens. Right-side light flash and a blue lens induced more rightward bias than other conditions. CONCLUSIONS This evidence confirms the use of sensory stimulation to complement post-stroke UN remediation. Lateralized light flash to the contralesional space and red-colored lenses have beneficial effects on amelioration of UN, whereas ipsilesional light flash and the color blue may exacerbate ipsilesional spatial bias in stroke survivors with UN. Implications for Rehabilitation Contralesional light flash and the color red may ameliorate ipsilesional spatial bias in stroke survivors with unilateral neglect (UN). Ipsilesional flash of light and the color blue may worsen ipsilesional spatial bias in stroke survivors with UN.
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Affiliation(s)
- Yang-Teng Fan
- a School of Occupational Therapy, College of Medicine, National Taiwan University , Taipei , Taiwan
| | - Ching-Yi Wu
- b Department of Occupational Therapy and Graduate Institute of Behavioral Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,c Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Wen-Chung Tsai
- d Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, and College of Medicine, Chang Gung University , Taoyuan , Taiwan , and
| | - Keh-Chung Lin
- a School of Occupational Therapy, College of Medicine, National Taiwan University , Taipei , Taiwan.,e Division of Occupational Therapy, Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital , Taipei , Taiwan
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Abstract
Hepatocellular carcinoma with colonic metastasis is rare. It mainly occurs by direct invasion and presents with bloody stools. We describe a patient with haematogenous metastasis to the rectum who presented with tenesmus. To our knowledge, such an association has not been reported previously. Colonic metastasis should be considered when patients with hepatocellular carcinoma present with bloody stools or tenesmus.
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Chang CH, Tsai WC, Hsu YH, Pang JHS. Pentadecapeptide BPC 157 enhances the growth hormone receptor expression in tendon fibroblasts. Molecules 2014; 19:19066-77. [PMID: 25415472 PMCID: PMC6271067 DOI: 10.3390/molecules191119066] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 11/12/2014] [Accepted: 11/13/2014] [Indexed: 12/11/2022] Open
Abstract
BPC 157, a pentadecapeptide derived from human gastric juice, has been demonstrated to promote the healing of different tissues, including skin, muscle, bone, ligament and tendon in many animal studies. However, the underlying mechanism has not been fully clarified. The present study aimed to explore the effect of BPC 157 on tendon fibroblasts isolated from Achilles tendon of male Sprague-Dawley rat. From the result of cDNA microarray analysis, growth hormone receptor was revealed as one of the most abundantly up-regulated genes in tendon fibroblasts by BPC 157. BPC 157 dose- and time-dependently increased the expression of growth hormone receptor in tendon fibroblasts at both the mRNA and protein levels as measured by RT/real-time PCR and Western blot, respectively. The addition of growth hormone to BPC 157-treated tendon fibroblasts dose- and time-dependently increased the cell proliferation as determined by MTT assay and PCNA expression by RT/real-time PCR. Janus kinase 2, the downstream signal pathway of growth hormone receptor, was activated time-dependently by stimulating the BPC 157-treated tendon fibroblasts with growth hormone. In conclusion, the BPC 157-induced increase of growth hormone receptor in tendon fibroblasts may potentiate the proliferation-promoting effect of growth hormone and contribute to the healing of tendon.
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Affiliation(s)
- Chung-Hsun Chang
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan.
| | - Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan.
| | - Ya-Hui Hsu
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan.
| | - Jong-Hwei Su Pang
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan.
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Wåhlander M, Nilsson F, Larsson E, Tsai WC, Hillborg H, Carlmark A, Gedde UW, Malmström E. Polymer-grafted Al2O3-nanoparticles for controlled dispersion in poly(ethylene-co-butyl acrylate) nanocomposites. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.03.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Tsai WC, Chen CJ, Yen JH, Liu HW. Sulphasalazine-Induced Systemic Lupus Erythematosus in a Patient with Ankylosing Spondylitis. Clin Rheumatol 2014; 21:339-40. [PMID: 12296286 DOI: 10.1007/s100670200089] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Tsai WC, Cheng JW, Chen JL, Chen CY, Chang HN, Liao YH, Lin MS, Pang JHS. Low-level laser irradiation stimulates tenocyte proliferation in association with increased NO synthesis and upregulation of PCNA and cyclins. Lasers Med Sci 2014; 29:1377-84. [PMID: 24510281 DOI: 10.1007/s10103-014-1528-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 01/13/2014] [Indexed: 01/15/2023]
Abstract
Low-level laser therapy is commonly used to treat tendinopathy or tendon injury. Tendon healing requires tenocyte migration to the repair site, followed by proliferation and synthesis of the extracellular matrix. There are few evidence to elucidate that low-level laser promote tenocyte proliferation. This study was designed to determine the effect of laser on tenocyte proliferation. Furthermore, the association of this effect with secretion of nitric oxide (NO) and the expressions of proliferating cell nuclear antigen (PCNA) and cyclins D1, E, A, and B1 was investigated. Tenocytes intrinsic to rat Achilles tendon were treated with low-level laser (660 nm). Tenocyte proliferation was evaluated by MTT assay and immunocytochemistry with Ki-67 stain. NO in the conditioned medium was measured by ELISA. Western blot analysis was used to evaluate the protein expressions of PCNA and cyclins D1, E, A, and B1. The results revealed that tenocytes proliferation was enhanced dose dependently by laser. NO secretion was increased after laser treatment. PCNA and cyclins E, A, and B1 were upregulated by laser. In conclusion, low-level laser irradiation stimulates tenocyte proliferation in a process that is mediated by upregulation of NO, PCNA, and cyclins E, A, and B1.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Gueishan Township, Taoyuan County, Taiwan
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Tsai WC, Liang FC, Cheng JW, Lin LP, Chang SC, Chen HH, Pang JHS. High glucose concentration up-regulates the expression of matrix metalloproteinase-9 and -13 in tendon cells. BMC Musculoskelet Disord 2013; 14:255. [PMID: 23981230 PMCID: PMC3765930 DOI: 10.1186/1471-2474-14-255] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 08/23/2013] [Indexed: 01/21/2023] Open
Abstract
Background Diabetes mellitus is associated with tendinopathy or tendon injuries. However, the mechanism underlying diabetic tendinopathy is unclear. The purpose of this study was to examine the effects of high glucose concentrations on the activity and expression of matrix metalloproteinases, type I collagen, and type III collagen in tendon cells. Methods Tendon cells from rat Achilles tendons were treated with 6 mM, 12 mM, and 25 mM glucose, and then cell proliferation was evaluated by the 3-[4,5-Dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay. Messenger RNA (mRNA) expression of MMP-2, MMP-8, MMP-9, and MMP-13 and type I and type III collagen was assessed by quantitative real-time polymerase chain reaction (PCR). The enzymatic activity of MMP-2 and MMP-9 was measured by gelatin zymography. Results The MTT assay results showed that the glucose concentration did not affect tendon cell proliferation. The results of the real-time PCR assay revealed that the mRNA expression of MMP-9 and MMP-13 was up-regulated by treatment with 25 mM glucose, whereas the mRNA expression of type I and III collagen was not affected. Gelatin zymography showed that 25 mM glucose increased the enzymatic activity of MMP-9. Conclusions High glucose concentration up-regulates the expression of MMP-9 and MMP-13 in tendon cells, which may account for the molecular mechanisms underlying diabetic tendinopathy.
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Affiliation(s)
- Wen-Chung Tsai
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan.
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Yu TY, Pang JHS, Wu KPH, Chen MJL, Chen CH, Tsai WC. Aging is associated with increased activities of matrix metalloproteinase-2 and -9 in tenocytes. BMC Musculoskelet Disord 2013; 14:2. [PMID: 23281803 PMCID: PMC3621429 DOI: 10.1186/1471-2474-14-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Accepted: 12/23/2012] [Indexed: 01/22/2023] Open
Abstract
Background Most tendon pathology is associated with degeneration, which is thought to involve cyclic loading and cumulative age-related changes in tissue architecture. However, the association between aging and degeneration of the extracellular matrix (ECM) in tendons has not been investigated extensively. Methods We examined tenocytes from Achilles tendons taken from rats of three different ages (2, 12, and 24 months). Tenocyte viability was assessed using the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay. Quantitative real-time polymerase chain reaction (PCR) was used to determine the levels of mRNAs that encode type-I collagen, matrix metalloproteinase (MMP)-2 and −9, tissue inhibitor of metalloproteinase (TIMP)-1 and −2 and transforming growth factor (TGF)-β1. Gelatin zymography was used to evaluate the enzymatic activities of MMP-2 and −9. Furthermore, the concentration of TGF-β1 in conditioned medium was evaluated using enzyme-linked immunosorbent assay (ELISA). Results The results of the MTT assay showed that the number of viable tenocytes decreased with age. No differences were observed in the levels of mRNAs that encode type-I collagen and TGF-β1 among the three age groups, and the TGF-β1 concentration did not change with age. However, mRNAs that encode MMP-2 and −9 were significantly more abundant in tenocytes from the aging group, and gelatin zymography revealed that the enzymatic activities of MMP-2 and −9 also increased significantly with age. Furthermore, as compared with young group, mRNAs that encode TIMP-1 and −2 were significantly decreased in tenocytes from the aging group. Conclusions Activities of MMP-2 and MMP-9 in tenocytes increase with age. This might provide a mechanistic explanation of how aging contributes to tendinopathy or tendon rupture with age.
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Affiliation(s)
- Tung-Yang Yu
- Departement of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
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Yu TY, Tsai WC, Cheng JW, Yang YM, Liang FC, Chen CH. The effects of aging on quantitative sonographic features of rotator cuff tendons. J Clin Ultrasound 2012; 40:471-478. [PMID: 22508403 DOI: 10.1002/jcu.21919] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 02/24/2012] [Indexed: 05/31/2023]
Abstract
PURPOSE Grayscale analysis is a practical, objective, and easy way to quantify echogenicity during ultrasonography. The purpose of the current study was to measure the changes in thickness and echogenicity that result from aging of the rotator cuff and long head of the biceps tendons. METHODS The study comprised 45 volunteers, aged between 20 and 84 years and without history of shoulder pain. Participants were divided into three groups: young, middle-aged, and old. All subjects underwent standard ultrasonography of both shoulders. Tendon thickness and tear were recorded, and images in both transverse and longitudinal scans were taken for grayscale analysis. To reduce the attenuation effect from skin and subcutaneous fat, we used the ratio of echogenicity of the tendon to that of the reference muscle and compared the tendon echogenicity among the different age groups. Sonographic findings were also correlated with age. RESULTS The supraspinatus tendon was significantly thicker in elderly participants and this was positively correlated with age. Moreover, the echogenicity ratio of the supraspinatus tendon decreased in the elderly group and showed a negative correlation with age. There was a higher prevalence of supraspinatus tendon tears in the older participants. CONCLUSIONS Our results indicate that supraspinatus tendons became thickened, hypoechogenic, and more likely to tear with age. The study presents a simple and useful method to investigate the echogenicity of the rotator cuff quantitatively.
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Affiliation(s)
- Tung-Yang Yu
- Department of Physical Medicine & Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
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Hsu CC, Chen CPC, Lin SC, Tsai WC, Liu HT, Lin YC, Lee HJ, Chen WP. Determination of the augmentation effects of hyaluronic acid on different heel structures in amputated lower limbs of diabetic patients using ultrasound elastography. Ultrasound Med Biol 2012; 38:943-952. [PMID: 22502884 DOI: 10.1016/j.ultrasmedbio.2012.02.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Revised: 02/22/2012] [Accepted: 02/26/2012] [Indexed: 05/31/2023]
Abstract
This study measured tissue properties of different anatomies of heels in amputated lower limbs of diabetic patients before and after hyaluronic acid (HA) or normal saline (NS) injections. Seven amputated lower limbs from six diabetic patients constituted the experimental group and one amputated lower limb from a diabetic patient served as the control. The limbs were placed in a fixation platform. A 5-12 MHz linear-array ultrasound transducer controlled by a stepping motor was used to load and unload tested heels. The loading-unloading velocity was 6 mm/s and the maximum loading stress was 178 kPa. Loading-unloading tests were performed before and after 1 mL HA injections into heels in the experimental group. The control limb underwent the same test before and after 1 mL NS injection. The unloaded thickness and Young's modulus of the macrochambers, microchambers and heel pads were determined before and after the interventions. The unloaded thickness of the macrochambers and the heel pad increased significantly (p = 0.012) after HA injection. The Young's modulus of the macrochambers decreased nonsignificantly after HA injections. Similar thickness and tissue stiffness changes were observed in the control limb. The baseline heel-pad energy dissipation ratio (EDR(hp)) was 81.3 ± 1.3% and decreased significantly (p = 0.012) to 73.1 ± 1.7% after HA injections. The EDR(hp) in the control increased after NS injection. Histologic examinations revealed localized HA accumulation in the macrochambers with an extension into the adjacent fibrous septa. Injection of HA can increase tissue thickness and enhance heel-pad tissue resilience.
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Affiliation(s)
- Chih-Chin Hsu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Keelung, Taiwan
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Tsai WC, Hsu CC, Pang JHS, Lin MS, Chen YH, Liang FC. Low-level laser irradiation stimulates tenocyte migration with up-regulation of dynamin II expression. PLoS One 2012; 7:e38235. [PMID: 22666495 PMCID: PMC3364209 DOI: 10.1371/journal.pone.0038235] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Accepted: 05/01/2012] [Indexed: 12/12/2022] Open
Abstract
Low-level laser therapy (LLLT) is commonly used to treat sports-related tendinopathy or tendon injury. Tendon healing requires tenocyte migration to the repair site, followed by proliferation and synthesis of the extracellular matrix. This study was designed to determine the effect of laser on tenocyte migration. Furthermore, the correlation between this effect and expression of dynamin 2, a positive regulator of cell motility, was also investigated. Tenocytes intrinsic to rat Achilles tendon were treated with low-level laser (660 nm with energy density at 1.0, 1.5, and 2.0 J/cm2). Tenocyte migration was evaluated by an in vitro wound healing model and by transwell filter migration assay. The messenger RNA (mRNA) and protein expressions of dynamin 2 were determined by reverse transcription/real-time polymerase chain reaction (real-time PCR) and Western blot analysis respectively. Immunofluorescence staining was used to evaluate the dynamin 2 expression in tenocytes. Tenocytes with or without laser irradiation was treated with dynasore, a dynamin competitor and then underwent transwell filter migration assay. In vitro wound model revealed that more tenocytes with laser irradiation migrated across the wound border to the cell-free zone. Transwell filter migration assay confirmed that tenocyte migration was enhanced dose-dependently by laser. Real-time PCR and Western-blot analysis demonstrated that mRNA and protein expressions of dynamin 2 were up-regulated by laser irradiation dose-dependently. Confocal microscopy showed that laser enhanced the expression of dynamin 2 in cytoplasm of tenocytes. The stimulation effect of laser on tenocytes migration was suppressed by dynasore. In conclusion, low-level laser irradiation stimulates tenocyte migration in a process that is mediated by up-regulation of dynamin 2, which can be suppressed by dynasore.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan County, Taiwan
- College of Medicine, Chang Gung University, Taoyuan County, Taiwan
| | - Chih-Chin Hsu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan County, Taiwan
- College of Medicine, Chang Gung University, Taoyuan County, Taiwan
| | - Jong-Hwei S. Pang
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan County, Taiwan
- * E-mail:
| | - Miao-Sui Lin
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan County, Taiwan
- College of Medicine, Chang Gung University, Taoyuan County, Taiwan
| | - Ying-Hsun Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan County, Taiwan
| | - Fang-Chen Liang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan County, Taiwan
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Chang HN, Pang JHS, Chen CPC, Ko PC, Lin MS, Tsai WC, Yang YM. The effect of aging on migration, proliferation, and collagen expression of tenocytes in response to ciprofloxacin. J Orthop Res 2012; 30:764-8. [PMID: 22021103 DOI: 10.1002/jor.21576] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 10/06/2011] [Indexed: 02/04/2023]
Abstract
Quinolone-induced tendinopathy or tendon rupture tends to be age-related. However, the synergistic effects of quinolone and aging on tenocytes remained to be explored. Tenocytes intrinsic to rat Achilles tendon from two age groups (young: 2 months; and near senescent (old): 24 months) were treated with ciprofloxacin. Tenocyte migration and proliferation were assessed by transwell filter migration assay and MTT (3-[4,5-Dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) assay, respectively. Messenger RNA and protein expressions of types I and III collagen were determined by reverse transcription-polymerase chain reaction (RT/PCR) and Western blot analysis, respectively. Transwell filter migration assay revealed that ciprofloxacin inhibited tenocytes migration, which became more significant in old tenocytes (p < 0.05). The results of MTT assay revealed that tenocytes proliferation decreased after ciprofloxacin treatment (p < 0.05), which also became more significant in old tenocytes. The results of RT-PCR and Western blot analysis revealed that mRNA and protein expressions of type I collagen remained unchanged in either young or old tenocytes with ciprofloxacin treatment, whereas the expressions of type III collagen were down-regulated by ciprofloxacin, which was more significant in old tenocytes. In conclusion, aging potentiated the ciprofloxacin-mediated inhibition of migration, proliferation, and expression of type III collagen of tenocytes.
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Affiliation(s)
- Hsiang-Ning Chang
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Taiwan
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Hu CF, Chen CPC, Tsai WC, Hu LL, Hsu CC, Tseng ST, Shau YW. Quantification of skeletal muscle fibrosis at different healing stages using sonography: a morphologic and histologic study in an animal model. J Ultrasound Med 2012; 31:43-48. [PMID: 22215768 DOI: 10.7863/jum.2012.31.1.43] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES This study attempted to quantify the degree of muscle fibrosis on sonograms of injured gastrocnemius muscles at different healing stages in a rat model. Correlations between the quantifications and histologic assessments of the injured muscles were also determined. METHODS Sonograms and histologic findings of gastrocnemius muscle fibrosis were obtained during the second, third, and fourth weeks after surgically induced lesions in the right gastrocnemius muscles of 15 Wistar rats. The echo intensity, reflecting the degree of brightness on a sonogram, was divided into 256 gray levels instead of decibels. The mean echo intensity of each pixel in the region of interest was calculated as a summation of the echo intensities in all pixels divided by the pixel numbers in the region. To control individual variations among the rats, we calculated a K value, defined as the difference in the mean echo intensity between normal and affected muscles. RESULTS Significant correlations (r > 0.7; P < .05) between mean echo intensity and K values and the fibrous tissue percentage were identified. The mean echo intensity in the injured gastrocnemius muscles was significantly (P = .029) greater than that in the normal muscles 3 weeks after injury. In histologic assessments, muscle fibrosis was most prominent 3 weeks after injury. However, the differences in fibrosis at different healing stages were not significant. CONCLUSIONS Mean echo intensity and K values can reflect the extent of fibrosis in affected muscles and may be valuable for quantifying muscle fibrosis in clinical practice.
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Affiliation(s)
- Ching-Fang Hu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Keelung, Taiwan
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Cheng JW, Tsai WC, Yu TY, Huang KY. Reproducibility of sonographic measurement of thickness and echogenicity of the plantar fascia. J Clin Ultrasound 2012; 40:14-19. [PMID: 22109854 DOI: 10.1002/jcu.20903] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Accepted: 10/04/2011] [Indexed: 05/31/2023]
Abstract
BACKGROUND To evaluate the intra- and interrater reliability of ultrasonographic measurements of the thickness and echogenicity of the plantar fascia. METHODS Eleven patients (20 feet), who complained of inferior heel pain, and 26 volunteers (52 feet) were enrolled. Two sonographers independently imaged the plantar fascia in both longitudinal and transverse planes. Volunteers were assessed twice to evaluate intrarater reliability. Quantitative evaluation of the echogenicity of the plantar fascia was performed by measuring the mean gray level of the region of interest using Digital Imaging and Communications in Medicine viewer software. RESULTS Sonographic evaluation of the thickness of the plantar fascia showed high reliability. Sonographic evaluations of the presence or absence of hypoechoic change in the plantar fascia showed surprisingly low agreement. The reliability of gray-scale evaluations appears to be much better than subjective judgments in the evaluation of echogenicity. Transverse scanning did not show any advantage in sonographic evaluation of the plantar fascia. CONCLUSIONS The reliability of sonographic examination of the thickness of the plantar fascia is high. Mean gray-level analysis of quantitative sonography can be used for the evaluation of echogenicity, which could reduce discrepancies in the interpretation of echogenicity by different sonographers. Longitudinal instead of transverse scanning is recommended for imaging the plantar fascia.
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Affiliation(s)
- Ju-Wen Cheng
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taiwan
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Tsai WC, Chang HN, Yu TY, Chien CH, Fu LF, Liang FC, Pang JHS. Decreased proliferation of aging tenocytes is associated with down-regulation of cellular senescence-inhibited gene and up-regulation of p27. J Orthop Res 2011; 29:1598-603. [PMID: 21452304 DOI: 10.1002/jor.21418] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Accepted: 02/28/2011] [Indexed: 02/04/2023]
Abstract
Symptomatic tendinopathy tends to be age-related. However, the molecular mechanisms of ageing and its effects on tenocyte proliferation and cell cycle progression are unknown. We examined tenocytes from Achilles tendons in rats from three age groups (young, 2 months; middle-aged, 12 months, and near senescence, 24 months). Tenocyte proliferation was assessed by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay and flow cytometry. Senescence-associated β-galactosidase (SA β-gal) staining was performed in all groups of tenocytes. mRNA and protein expression of cellular senescence-inhibited gene (CSIG) and p27 was measured by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot, respectively. The results of MTT assay revealed that tenocyte proliferation decreased with age (p < 0.05). Cell cycle progression was arrested at G0/G1 phase in senescent tenocytes. More senescent tenocytes expressed SA β-gal than young tenocytes did. By RT-PCR and Western blot analysis, the gene and protein expression of CSIG was found to be down-regulated, whereas that of p27 was up-regulated with age. In conclusion, the proliferation of tenocytes declines with age and is associated with the down-regulation of CSIG and up-regulation of p27.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taiwan
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Tsai WC, Yang YM. Fluoroquinolone-associated tendinopathy. Chang Gung Med J 2011; 34:461-467. [PMID: 22035890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The fluoroquinolones (FQs) are used to treat a wide range of infections because of their excellent gastrointestinal absorption, superior tissue penetration and broad-spectrum activity. Recently, FQ-associated tendinopathy and tendon rupture have been reported, especially in the elderly and patients with diabetes and renal failure. However, these adverse effects do not appear to be widely known among physicians. Because of the frequent use of FQs in clinical practice, physicians should be aware of their potential for severe disability from tendon rupture. Achilles tendinopathy or rupture is among the most serious side effects associated with FQ use, with reports markedly increasing, especially with the use of ciprofloxacin. The histopathologic findings include degenerative lesions, fissures, interstitial edema without cellular infiltration, necrosis and neovascularization. There are possible molecular mechanisms accounting for FQ-associated tendinopathy. First, ciprofloxacin mediates inhibition of cell proliferation and G2/M cell cycle arrest in tendon cells by down-regulation of cyclin B and cyclin-dependent kinase 1. Second, ciprofloxacin inhibits the spead and migration of tenocytes by down-regulation of focal adhesion kinase phosphorylation. Third, ciprofloxacin enhances the enzymatic activity of matrix metalloproteinase-2 with degradation of type I collagen. Management of FQ-associated tendinopathy includes immediate discontinuation of FQs, rest, non-steroidal anti-inflammatory drugs, physical modalities and eccentric strengthening exercise. Tendon rupture may require surgical intervention.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Chang Gung University College of Medicine, Taoyuan, Taiwan.
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Yang CSH, Chen HC, Liang CC, Yu TY, Hung D, Tseng TC, Tsai WC. Sonographic measurements of the thickness of the soft tissues of the interscapular region in a population of normal young adults. J Clin Ultrasound 2011; 39:78-82. [PMID: 21213332 DOI: 10.1002/jcu.20775] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2009] [Accepted: 10/05/2010] [Indexed: 05/30/2023]
Abstract
BACKGROUND To use sonography (US) to measure the interscapular soft-tissue thickness and to determine any correlation with anthropometric indices. METHODS Fifty-five healthy young adults (21 men and 34 women) with a mean age of 22.1 ± 3.0 years (range, 18-35) were enrolled. High-resolution US was used to measure the bilateral soft-tissue thickness near the medial border of the scapula. Anthropometric indices, including body weight, height, and circumferences of chest, waist, and hip, were also measured. RESULTS On the right side, mean values ± standard deviation for the thickness of the trapezius, rhomboid, and posterior serratus muscles in millimeters were 4.9 ± 1.0, 6.3 ± 2.3, and 3.5 ± 1.4, respectively, for men and 3.4 ± 0.8, 3.8 ± 1.7, and 2.2 ± 1.5, respectively, for women. The thickness of each muscle was significantly greater in men than in women (p < 0.05). For both genders, no significant differences in the soft-tissue thicknesses were found between both sides. Based on the anthropometric indices, body weight was the only significant contributor to the soft-tissue thickness. CONCLUSIONS US is a practical tool for measuring soft-tissue thickness in the interscapular region. Body weight and soft-tissue thickness are closely associated.
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Affiliation(s)
- Clement Shih-Hsien Yang
- Department of Physical Medicine and Rehabilitation, Buddhist Tzu Chi General Hospital, Hualien, Taiwan; College of Medicine, Tzu Chi University, Hualien, Taiwan
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Tsai WC, Hsu CC, Chen CPC, Chang HN, Wong AMK, Lin MS, Pang JHS. Ciprofloxacin up-regulates tendon cells to express matrix metalloproteinase-2 with degradation of type I collagen. J Orthop Res 2011; 29:67-73. [PMID: 20602464 DOI: 10.1002/jor.21196] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Ciprofloxacin-induced tendinopathy and tendon rupture have been previously described, principally affecting the Achilles tendon. This study was designed to investigate the effect of ciprofloxacin on expressions of matrix metalloproteinases (MMP)-2 and -9, tissue inhibitors of metalloproteinase (TIMP)-1 and -2 as well as type I collagen in tendon cells. Tendon cells intrinsic to rat Achilles tendon were treated with ciprofloxacin and then underwent MTT (tetrazolium) assay. Real-time reverse-transcription polymerase chain reaction (RT-PCR) and Western blot analysis were used, respectively, to evaluate the gene and protein expressions of type I collagen, and MMP-2. Gelatin zymography was used to evaluate the enzymatic activities of MMP-2 and -9. Reverse zymography was used to evaluate TIMP-1 and -2. Immunohistochemical staining for MMP-2 in ciprofloxacin-treated tendon explants was performed. Collagen degradation was evaluated by incubation of conditioned medium with collagen. The results revealed that ciprofloxacin up-regulated the expression of MMP-2 in tendon cells at the mRNA and protein levels. Immunohistochemistry also confirmed the increased expressions of MMP-2 in ciprofloxacin-treated tendon explants. The enzymatic activity of MMP-2 was up-regulated whereas that of MMP-9, TIMP-1 or TIMP-2 was unchanged. The amount of secreted type I collagen in the conditioned medium decreased and type I collagen was degraded after ciprofloxacin treatment. In conclusion, ciprofloxacin up-regulates the expressions of MMP-2 in tendon cells and thus degraded type I collagen. These findings suggest a possible mechanism of ciprofloxacin-associated tendinopathy.
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Affiliation(s)
- Wen-Chung Tsai
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Linkou, Taiwan
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Liu CC, Ou TT, Wu CC, Li RN, Lin YC, Lin CH, Tsai WC, Liu HW, Yen JH. Global DNA methylation, DNMT1, and MBD2 in patients with systemic lupus erythematosus. Lupus 2010; 20:131-6. [DOI: 10.1177/0961203310381517] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To investigate the associations of DNA methylation levels and mRNA expressions of DNA cytosine-5-methyltransferase 1 (DNMT1) and methyl CpG-binding domain 2 (MBD2) with systemic lupus erythematosus (SLE), 108 patients with SLE and 97 healthy controls were enrolled in this study. DNA and total RNA were extracted from the peripheral blood mononuclear cells of the SLE patients and the controls. The global methylation levels of DNA were measured in 63 patients with SLE and 68 healthy controls by the ELISA method. DNMT1 and MBD2 mRNA were also detected in 108 SLE patients and 97 controls using the quantitative real-time polymerase chain reaction method. The global methylation level of DNA was significantly decreased in the SLE patients in comparison with that in the controls ( p < 0.001, 95% CI = 0.1573–0.5052). The patients with SLE have higher expressions of DNMT1 and MBD2 mRNA than the controls ( p < 0.001, 95% CI = −0.0049 – −0.0019 and p = 0.001, 95% CI = −0.0119 – −0.0029, respectively). We also found that there were no significant differences in the methylation level and the expression of DNMT1 and MBD2 mRNA between the active and the inactive SLE patients. A positive correlation was also found between DNMT1 and MBD2 mRNA expressions in the SLE patients ( p < 0.001). This study demonstrated that the patients with SLE had a significantly lower level of DNA methylation than the controls. The expression of both DNMT1 and MBD2 mRNA was significantly increased in the SLE patients compared with the controls. This study also showed a positive correlation between DNMT1 and MBD2 mRNA levels in the patients with SLE.
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Affiliation(s)
- CC Liu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan
| | - TT Ou
- >Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan
| | - CC Wu
- >Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan
| | - RN Li
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Taiwan
| | - YC Lin
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan
| | - CH Lin
- >Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan
| | - WC Tsai
- >Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan
| | - HW Liu
- >Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan
| | - JH Yen
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan
- >Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan
- Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Taiwan
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Chang CH, Tsai WC, Lin MS, Hsu YH, Pang JHS. The promoting effect of pentadecapeptide BPC 157 on tendon healing involves tendon outgrowth, cell survival, and cell migration. J Appl Physiol (1985) 2010; 110:774-80. [PMID: 21030672 DOI: 10.1152/japplphysiol.00945.2010] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Pentadecapeptide BPC 157, composed of 15 amino acids, is a partial sequence of body protection compound (BPC) that is discovered in and isolated from human gastric juice. Experimentally it has been demonstrated to accelerate the healing of many different wounds, including transected rat Achilles tendon. This study was designed to investigate the potential mechanism of BPC 157 to enhance healing of injured tendon. The outgrowth of tendon fibroblasts from tendon explants cultured with or without BPC 157 was examined. Results showed that BPC 157 significantly accelerated the outgrowth of tendon explants. Cell proliferation of cultured tendon fibroblasts derived from rat Achilles tendon was not directly affected by BPC 157 as evaluated by MTT assay. However, the survival of BPC 157-treated cells was significantly increased under the H(2)O(2) stress. BPC 157 markedly increased the in vitro migration of tendon fibroblasts in a dose-dependent manner as revealed by transwell filter migration assay. BPC 157 also dose dependently accelerated the spreading of tendon fibroblasts on culture dishes. The F-actin formation as detected by FITC-phalloidin staining was induced in BPC 157-treated fibroblasts. The protein expression and activation of FAK and paxillin were determined by Western blot analysis, and the phosphorylation levels of both FAK and paxillin were dose dependently increased by BPC 157 while the total amounts of protein was unaltered. In conclusion, BPC 157 promotes the ex vivo outgrowth of tendon fibroblasts from tendon explants, cell survival under stress, and the in vitro migration of tendon fibroblasts, which is likely mediated by the activation of the FAK-paxillin pathway.
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Affiliation(s)
- Chung-Hsun Chang
- Graduate Institute of Clinical Medical Sciences, Chang Gung Univ., 259 Wen-Hwa 1st Rd., Kwei-Shan, Tao-Yuan 333, Taiwan, Republic of China
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Tsai WC, Domier CW, Lee KC, Luhmann NC, Kaita R, Park HK. NSTX far infrared tangential interferometer/polarimeter electronics upgrade. Rev Sci Instrum 2010; 81:10D526. [PMID: 21033881 DOI: 10.1063/1.3485103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
New electronics for the multichannel far infrared tangential interferometer/polarimeter system employed on the National Spherical Torus Experiment (NSTX) have greatly extended its capability to monitor high frequency density fluctuations. Such measurements are essential in understanding transport physics issues in NSTX as well as for the coming ITER device. The electronics, which were previously limited to ∼250 kHz, have been upgraded with a video bandwidth that extends to 4 MHz when operating as an interferometry-only configuration, and to ∼500 kHz when operating as a simultaneous interferometer/polarimeter system. Experimental details and test results of the new electronics are presented.
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Affiliation(s)
- W C Tsai
- Department of Electrical and Computer Engineering, University of California, Davis, California 95616, USA
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