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Chien KT, Chen YC, Chang TK, Liu YC, Chen LP, Huang YC, Lian YS, Li JY. Novel Cervical Endoscopic Unilateral Laminoforaminotomy for Bilateral Decompression in Cervical Spondylosis Myeloradiculopathy: A Technical Note and Clinical Results. J Clin Med 2024; 13:1910. [PMID: 38610675 PMCID: PMC11012691 DOI: 10.3390/jcm13071910] [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] [Received: 01/24/2024] [Revised: 03/05/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
Background: This study investigates the efficacy of the Cervical Endoscopic Unilateral Laminoforaminotomy for Bilateral Decompression (CE-ULFBD) technique in treating cervical myeloradiculopathy, primarily caused by degenerative spondylosis. Traditionally managed through multisegmental anterior cervical discectomy and fusion (ACDF) or laminoplasty combined with foraminotomy, this condition has recently experienced a promising shift towards minimally invasive approaches, particularly endoscopic spinal decompression. While empirical evidence is still emerging, these techniques show potential for effective treatment. Method: The objective was to evaluate the outcomes of CE-ULFBD in achieving single or multilevel bilateral foraminal and central decompression, emphasizing the reduction of injury to posterior cervical muscles and the associated postoperative neck soreness common in conventional procedures. This paper delineates the surgical procedures involved in CE-ULFBD and presents the clinical outcomes of nine patients diagnosed with myeloradiculopathy due to severe cervical stenosis. Result: Assessments were conducted using the Visual Analogue Scale (VAS) for neck and arm pain and the Modified Japanese Orthopaedic Association scale (mJOA) for the activity measurement of daily living. Results indicated a considerable decrease in pain levels according to the VAS, coupled with significant improvements in functional capacities as measured by the mJOA scale. Additionally, no major postoperative complications were noted during the follow-up period. Conclusion: The study concludes that CE-ULFBD is a safe and effective approach for the treatment of cervical myeloradiculopathy resulting from severe cervical stenosis, offering a viable and less invasive alternative to traditional decompressive surgeries.
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Affiliation(s)
- Kai-Ting Chien
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei 104217, Taiwan; (K.-T.C.)
- Institute of Applied Arts, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Yu-Cheng Chen
- Department of Medical Education, MacKay Memorial Hospital, Taipei 104217, Taiwan
| | - Ting-Kuo Chang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei 104217, Taiwan; (K.-T.C.)
- Department of Medicine, Mackay Medical College, No.46, Sec. 3, Zhongzheng Rd., Sanzhi Dist., New Taipei City 252, Taiwan
| | - Yueh-Ching Liu
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei 104217, Taiwan; (K.-T.C.)
| | - Lei-Po Chen
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei 104217, Taiwan; (K.-T.C.)
- Department of Medicine, Mackay Medical College, No.46, Sec. 3, Zhongzheng Rd., Sanzhi Dist., New Taipei City 252, Taiwan
| | - Yu-Ching Huang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei 104217, Taiwan; (K.-T.C.)
| | - Yan-Shiang Lian
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei 104217, Taiwan; (K.-T.C.)
| | - Jian-You Li
- Institute of Applied Arts, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
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Tsai PC, Liu YC, Chang TK, Chen LP, Huang YC, Lian YS, Chien KT. The novel Kambin Torpedo full-endoscopic lumbar interbody fusion technique: a case series. Eur Spine J 2024; 33:417-428. [PMID: 37389696 DOI: 10.1007/s00586-023-07836-9] [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] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 05/10/2023] [Accepted: 06/19/2023] [Indexed: 07/01/2023]
Abstract
PURPOSE Full-endoscopic lumbar interbody fusion (FELIF) is a new-generation treatment for spondylolisthesis. However, owing to their unique characteristics, the two main endoscopic fusion trajectories, the trans-Kambin and posterolateral approaches, have important limitations. Herein, we aimed to introduce a new technique called Kambin Torpedo FELIF (KT-FELIF). METHODS The KT-FELIF technique is based on the trans-Kambin approach. It additionally completes ipsilateral total facetectomy and contralateral direct decompression. Thus, this novel technique combines the advantages of the trans-Kambin and posterolateral approaches. RESULTS We reported on the indications and technical steps of KT-FELIF and provided intraoperative and animated videos to clarify the procedure. Short-term follow-up based on 3-month postoperative computed tomography and plain films images taken at least 3 months after surgery showed adequate bony decompression, a large bone graft contact area, and good intervertebral trabecular bone growth without radiolucent lines between the graft, cage, and end plate. The clinical results, such as ipsilateral and contralateral visual analog scale and Oswestry disability index values, gradually improved at 1 and 3 months postoperatively. No complications were observed. CONCLUSIONS KT-FELIF is a promising FELIF technique for achieving bilateral direct decompression through a unilateral approach while accomplishing thorough discectomy and endplate preparation.
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Affiliation(s)
- Ping-Chi Tsai
- Department of Medical Education, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist, Taipei City, 104217, Taiwan
| | - Yueh-Ching Liu
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Ting-Kuo Chang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Lei-Po Chen
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Yu-Ching Huang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Yan-Shiang Lian
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Kai-Ting Chien
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan.
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Huang YC, Chen WC, Yu CL, Chang TK, I-Chin Wei A, Chang TM, Liu JF, Wang SW. FGF2 drives osteosarcoma metastasis through activating FGFR1-4 receptor pathway-mediated ICAM-1 expression. Biochem Pharmacol 2023; 218:115853. [PMID: 37832794 DOI: 10.1016/j.bcp.2023.115853] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 09/25/2023] [Accepted: 10/10/2023] [Indexed: 10/15/2023]
Abstract
Osteosarcoma is a malignant tumor with high metastatic potential, such that the overall 5-year survival rate of patients with metastatic osteosarcoma is only 20%. Therefore, it is necessary to unravel the mechanisms of osteosarcoma metastasis to identify predictors of metastasis by which to develop new therapies. Fibroblast growth factor 2 (FGF2) is a growth factor involved in embryonic development, cell migration, and proliferation. The overexpression of FGF2 and FGF receptors (FGFRs) has been shown to enhance cancer cell proliferation in lung, breast, gastric, and prostate cancers as well as melanoma. Nonetheless, the roles of FGF2 and FGFRs in human osteosarcoma cells remain unknown. In the present study, we found that FGF2 was overexpressed in human osteosarcoma sections and correlated with lung metastasis. Treatment of FGF2 induced migration activity, invasion activity, and intercellular adhesion molecule (ICAM)-1 expression in osteosarcoma cells. In particular, the downregulation or antagonism of FGFR1-4 suppressed FGF2-induced ICAM-1 expression and cancer cell migration. Furthermore, FGFR1, FGFR2, FGFR3, and FGFR4 were involved in FGF2-induced the phospholipase Cβ/protein kinase Cα/proto-oncogene c-Src signaling pathway and triggered c-Jun nuclear translocation. Subsequent c-Jun upregulation of activator protein-1 transcription activity on the ICAM-1 promoter led to an increased migration of osteosarcoma cells. Moreover, the knockdown of endogenous FGF2 suppressed ICAM-1 expression and migration of osteosarcoma cells. These findings suggest that FGF2/FGFR1-4 signaling promotes metastasis via its direct downstream target gene ICAM-1, revealing a novel potential therapeutic target for osteosarcoma.
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Affiliation(s)
- Yu-Ching Huang
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan; Division of Spine Surgery, Department of Orthopedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
| | - Wei-Cheng Chen
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Division of Sports Medicine & Surgery, Department of Orthopedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chen-Lin Yu
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan
| | - Ting-Kuo Chang
- Division of Spine Surgery, Department of Orthopedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Augusta I-Chin Wei
- Translational Medicine Center, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Tsung-Ming Chang
- Translational Medicine Center, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Ju-Fang Liu
- Translational Medicine Center, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan.
| | - Shih-Wei Wang
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Ko CY, Lin YY, Achudhan D, Chang JW, Liu SC, Lai CY, Huang YL, Tsai CH, Fong YC, Chen HT, Lee KT, Huang CC, Chang TK, Tang CH. Omentin-1 ameliorates the progress of osteoarthritis by promoting IL-4-dependent anti-inflammatory responses and M2 macrophage polarization. Int J Biol Sci 2023; 19:5275-5289. [PMID: 37928270 PMCID: PMC10620827 DOI: 10.7150/ijbs.86701] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 10/01/2023] [Indexed: 11/07/2023] Open
Abstract
Osteoarthritis (OA) is a prevalent joint disease commonly associated with aging and obesity, which can lead to pain, stiffness, joint dysfunction, and disability. Omentin-1 (also called intelectin-1) is a newly discovered adipokine, which plays a protective role in suppressing the secretion of pro-inflammatory cytokines. Based on data from the Gene Expression Omnibus (GEO) dataset and clinical samples obtained at our institution revealed, determined that omentin-1 and IL-4 (an anti-inflammatory cytokine) levels were significantly lower in OA patients than in normal controls. Omentin-1 was shown to induce IL-4-depedent anti-inflammatory responses and M2 macrophage polarization in OA synovial fibroblasts via the PI3K, ERK, and AMPK pathways. Administering omentin-1 was shown to block cartilage degradation and bone erosion resulting from anterior cruciate ligament transection by inhibiting the production of pro-inflammatory cytokines and promoting M2 macrophage polarization in vivo. Our findings indicate omentin-1 as a promising therapeutic avenue for the treatment for OA.
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Affiliation(s)
- Chih-Yuan Ko
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Yen-You Lin
- Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan
| | - David Achudhan
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Jun-Way Chang
- Program of Biotechnology and Biomedical Industry, China Medical University, Taichung, Taiwan
| | - Shan-Chi Liu
- Department of Medical Education and Research, China Medical University Beigang Hospital, Yunlin County, Taiwan
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan
| | - Chao-Yang Lai
- Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Yuan-Li Huang
- Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Chun-Hao Tsai
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
| | - Yi-Chin Fong
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Hsien-Te Chen
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
| | - Kun-Tsan Lee
- Department of Post-Baccalaureate medicine, National Chung-Hsing University, Taichung, Taiwan
- Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chien-Chung Huang
- School of Medicine, China Medical University, Taichung, Taiwan
- Division of Immunology and Rheumatology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Ting-Kuo Chang
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
- Division of Spine Surgery, Department of Orthopedic Surgery, MacKay Memorial Hospital, New Taipei, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
- Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan
- Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
- Department of Medical Research, China Medical University Hsinchu Hospital, Hsinchu, Taiwan
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Tran NB, Lin CY, Chang TK, Fong YC, Thadevoos LA, Lai CY, Huang YL, Tsai CH, Ko CY, Liu JF, Yang SF, Tang CH. Melatonin inhibits chondrosarcoma cell proliferation and metastasis by enhancing miR-520f-3p production and suppressing MMP7 expression. J Pineal Res 2023:e12872. [PMID: 37057370 DOI: 10.1111/jpi.12872] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 03/17/2023] [Accepted: 04/10/2023] [Indexed: 04/15/2023]
Abstract
Chondrosarcoma has a high propensity to metastasize and responds poorly to chemotherapy and radiation treatment. The enzymatic activity of matrix metalloproteinases (MMPs) is very important in chondrosarcoma metastasis. Melatonin exhibits anticarcinogenic activity in many types of cancers by suppressing the expression of certain MMP family members, but this has not yet been clearly determined in chondrosarcoma. Our study demonstrates that MMP7 plays an essential role in chondrosarcoma cell proliferation, migration and anoikis resistance. We also found that MMP7 is highly expressed in chondrosarcomas. Our in vitro and in vivo investigations show that melatonin strongly inhibits chondrosarcoma cell proliferation, migration and anoikis resistance by directly suppressing MMP7 expression. Melatonin reduced MMP7 synthesis by promoting levels of miR-520f-3p expression, which were downregulated in human chondrosarcoma tissue samples. Pharmacological inhibition of miR-520f-3p markedly reversed the effects of melatonin upon chondrosarcoma proliferation and metastasis. Thus, our study suggests that melatonin has therapeutic potential for reducing the tumorigenesis and metastatic potential of chondrosarcoma via the miR-520f-3p/MMP7 axis. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Nguyen Bao Tran
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Chih-Yang Lin
- Translational Medicine Center, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Ting-Kuo Chang
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
- Division of Spine Surgery, Department of Orthopedic Surgery, MacKay Memorial Hospital, New Taipei, Taiwan
| | - Yi-Chin Fong
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Beigang Hospital, Yunlin, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Louis Anoop Thadevoos
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Chao-Yang Lai
- Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Yuan-Li Huang
- Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Chun-Hao Tsai
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Chih-Yuan Ko
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Ju-Fang Liu
- School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
- Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
- Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
- Department of Medical Research, China Medical University Hsinchu Hospital, Hsinchu, Taiwan
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Lu YC, Hsu LI, Lin CF, Hsu CP, Chang TK, Cheng CC, Huang CH. Biomechanical characteristics of self-expanding sinus stents during crimping and deployment_A comparison between different biomaterials. J Mech Behav Biomed Mater 2023; 138:105669. [PMID: 36634436 DOI: 10.1016/j.jmbbm.2023.105669] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/09/2023]
Abstract
Self-expanding sinus stents are often used in functional endoscopic sinus surgery to treat inflamed sinuses. The PROPEL self-expanding sinus stent offers mechanical support to the sinus cavity to prevent restenosis. The stent is made of a bioabsorbable material (PLGA) that disappears after wound healing. However, complications such as foreign body sensation and severe stent migration/expulsion have been reported after implantation. Little is known about the contact characteristics of self-expanding sinus stents from when the stent is crimped into the insertion device through to deployment into the sinus cavity. This current study developed a test platform to analyze the biomechanical behavior of the stent during this process. Three common bioabsorbable materials, PLGA, PCL and Mg alloy, were evaluated to understand how the choice of material affects the biomechanical characteristics of self-expanding sinus stents. The results showed that the material can have a considerable influence on the contact characteristics during crimping and deployment. When crimped, the PLGA and Mg alloy stents showed much higher plastic strain and contact stress than the PCL stent. When deployed, the PCL stent had the largest contact area (4.3 mm2) and the lowest contact pressure (0.1 MPa) on the inner surface of the sinus canal. The results indicate that PCL could be a suitable choice for self-expanding sinus stents. This current study provides a method for observing the biomechanical characteristics of sinus stents during stent crimping and deployment.
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Affiliation(s)
- Yung-Chang Lu
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital, Taiwan; Department of Medicine, MacKay Medical College, Taipei, Taiwan
| | - Lin-I Hsu
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital, Taiwan; Department of Physical Therapy and Assistive Technology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chih-Feng Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Pin Hsu
- High Speed 3D Printing Research Center, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Ting-Kuo Chang
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital, Taiwan; Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chung-Chih Cheng
- Medical and Pharmaceutical Industry Technology and Development Center, New Taipei City, Taiwan
| | - Chang-Hung Huang
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital, Taiwan; Department of Medicine, MacKay Medical College, Taipei, Taiwan; Department of Physical Therapy and Assistive Technology, National Yang Ming Chiao Tung University, Taipei, Taiwan; School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.
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Wang YH, Tsai CH, Liu SC, Chen HT, Chang JW, Ko CY, Hsu CJ, Chang TK, Tang CH. miR-150-5p and XIST interaction controls monocyte adherence: Implications for osteoarthritis therapy. Front Immunol 2022; 13:1004334. [PMID: 36203618 PMCID: PMC9530358 DOI: 10.3389/fimmu.2022.1004334] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/02/2022] [Indexed: 11/23/2022] Open
Abstract
Recent literature highlights the importance of microRNAs (miRNAs) functioning as diagnostic biomarkers and therapeutic agents in osteoarthritis (OA) and regulators of gene expression. In OA pathogenesis, cell adhesion molecules (CAMs), especially vascular cell adhesion protein 1 (VCAM-1), recruit monocyte infiltration to inflamed synovial tissues and thus accelerate OA progression. Up until now, little has been known about the regulatory mechanisms between miRNAs, long non-coding RNAs (lncRNAs) and VCAM-1 during OA progression. The evidence in this article emphasizes that the functional feature of miR-150-5p is an interaction with the lncRNA X-inactive specific transcript (XIST), which regulates VCAM-1-dependent monocyte adherence in OA synovial fibroblasts (OASFs). Levels of VCAM-1, CD11b (a monocyte marker) and XIST expression were higher in human synovial tissue samples and OASFs, while levels of miR-150-5p were lower in human OA synovial tissue compared with non-OA specimens. XIST enhanced VCAM-1-dependent monocyte adherence to OASFs. Upregulation of miR-150-5p inhibited the effects of XIST upon monocyte adherence. Administration of miR-150-5p effectively ameliorated OA severity in anterior cruciate ligament transection (ACLT) rats. The interaction of miR-150-5p and XIST regulated VCAM-1-dependent monocyte adherence and attenuated OA progression. Our findings suggest that miR-150-5p is a promising small-molecule therapeutic strategy for OA.
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Affiliation(s)
- Yu-Han Wang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Chun-Hao Tsai
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Shan-Chi Liu
- Department of Medical Education and Research, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Hsien-Te Chen
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Jun-Way Chang
- The Ph.D. Program of Biotechnology and Biomedical Industry, China Medical University, Taichung, Taiwan
| | - Chih-Yuan Ko
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Chin-Jung Hsu
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Ting-Kuo Chang
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
- Division of Spine Surgery, Department of Orthopedic Surgery, MacKay Memorial Hospital, New Taipei, Taiwan
- *Correspondence: Chih-Hsin Tang, ; Ting-Kuo Chang,
| | - Chih-Hsin Tang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
- School of Medicine, China Medical University, Taichung, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
- Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
- *Correspondence: Chih-Hsin Tang, ; Ting-Kuo Chang,
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Lu YC, Chang TK, Lin TC, Yeh ST, Fang HW, Huang CH, Huang CH. The potential role of herbal extract Wedelolactone for treating particle-induced osteolysis: an in vivo study. J Orthop Surg Res 2022; 17:335. [PMID: 35765082 PMCID: PMC9237967 DOI: 10.1186/s13018-022-03228-9] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 06/22/2022] [Indexed: 11/10/2022] Open
Abstract
Background Osteolysis is one of the most prevalent clinical complications affecting people who undergo total joint replacement (TJR). Wedelolactone (WDL) is a coumestan compound derived from the Wedelia chinensis plant and has been demonstrated to exhibit anti-inflammatory properties. This study aimed to investigate the oral administration of WDL as a potential treatment for particle-induced osteolysis using a well-established mice calvarial disease model. Methods Thirty-two C57BL/6 J mice were randomized into four groups: Sham, vehicle, osteolysis group with oral WDL treatment for 4 weeks (WDL 4w), and osteolysis group treated for 8 weeks (WDL 8w). Micro-CT was used to quantitatively analyze the bone mineral density (BMD), bone volume/tissue volume (BV/TV) and trabecular bone thickness (Tb.Th). Osteoclast numbers were also measured from histological slides by two investigators who were blind to the treatment used. Results The results from micro-CT observation showed that BMD in the WDL 8w group improved significantly over the vehicle group (p < 0.05), but there was no significant difference between WDL 4w and 8w for BV/TV and Tb.Th. Osteoclast numbers in the WDL 4w group were also lower than the vehicle group (p < 0.05), but the difference between WDL 8w and 4w groups was not significant. Conclusions Particle-induced osteolysis is an inevitable long-term complication after TJR. The results of this animal study indicate that an oral administration of WDL can help reduce the severity of osteolysis without adverse effects.
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Affiliation(s)
- Yung-Chang Lu
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
| | - Ting-Kuo Chang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
| | - Tzu-Chiao Lin
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Shu-Ting Yeh
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Hsu-Wei Fang
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan
| | - Chun-Hsiung Huang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Orthopaedic Surgery, Changhua Christian Hospital, Changhua, Taiwan
| | - Chang-Hung Huang
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan. .,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan. .,School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan. .,Institute of Geriatric Welfare Technology and Science, MacKay Medical College, New Taipei City, Taiwan.
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Lu YC, Chang TK, Yeh ST, Lin TC, Lin HS, Chen CH, Huang CH, Huang CH. Evaluation of graphene-derived bone scaffold exposure to the calvarial bone_ in-vitro and in-vivo studies. Nanotoxicology 2022; 16:1-15. [PMID: 35085045 DOI: 10.1080/17435390.2022.2027036] [Citation(s) in RCA: 4] [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] [Indexed: 12/13/2022]
Abstract
Graphene is a novel material which has recently been gaining great interest in the biomedical fields. Our previous study observed that graphene-derived particles help induce bone formation in a murine calvarial model. Here, we further developed a blended graphene-contained polycaprolactone (PCL/G) filament for application in a 3D-printed bone scaffold. Since implants are expected to be for long-term usage, in vitro cell culture and in vivo scaffold implants were evaluated in a critical-size bone defect calvarial model for over 60 weeks. Graphene greatly improved the mechanical strength by 30.2% compared to pure PCL. The fabricated PCL/G scaffolds also showed fine cell viability. In animal model, an abnormal electroencephalogram power spectrum and early signs of aging, such as hair graying and hair loss, were found in the group with a PCL/G scaffold compared to pure PCL scaffold. Neither of the abnormal symptoms caused death of all animals in both groups. The long-term use of graphene-derived biomaterials for in-vivo implants seems to be safe. But the comprehensive biosafety still needs further evaluation.
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Affiliation(s)
- Yung-Chang Lu
- Department of Medicine, MacKay Medical College, Taipei, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Ting-Kuo Chang
- Department of Medicine, MacKay Medical College, Taipei, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Shu-Ting Yeh
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Tzu-Chiao Lin
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Hung-Shih Lin
- Department of Neurosurgery, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chun-Hung Chen
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chun-Hsiung Huang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Orthopaedic Surgery, Changhau Christian Hospital, Changhau, Taiwan
| | - Chang-Hung Huang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
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Chien KT, Chen CC, Chu CM, Chan YL, Chung HY, Chang TK. The Determination of Efficacy of CircuCare on Blood Circulation and Metabolism: An Animal Model Study. Comput Math Methods Med 2021; 2021:9934107. [PMID: 34925548 PMCID: PMC8677394 DOI: 10.1155/2021/9934107] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 10/13/2021] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To determine whether feeding CircuCare to rats improves blood circulation, metabolism, immune regulation, endocrine activity, and oxidative stress. METHODS 28 eight-week-old male Sprague-Dawley rats were evenly randomized into control and experimental groups. The control group was fed with ordinary drinking water, while the experimental group was fed with CircuCare at a daily dose of 93.75 mg per 300 g of body weight over eight weeks. Both groups were subjected to a swimming test, and blood samples were taken to observe any variations in various biochemical parameters before and after the test. Key Findings. The experimental group's mean swimming exhaustion duration was 53.2% longer and had a significantly higher lactic acid removal ratio. Their mean prostaglandin E2 level and mean glucose, cortisol, and glutathione level (30 minutes after swimming test) were also significantly higher. No undesirable impacts from CircuCare relating to general blood biochemistry values and bone mineral density were reported. CONCLUSIONS The present results show that CircuCare can be safely used to increase stamina and exercise capability, expedite the metabolism of lactic acid, accelerate muscle repair, and promote the antioxidant activity of cells in rats.
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Affiliation(s)
- Kai-Ting Chien
- Department of Orthopaedic Surgery, Mackay Memorial Hospital, Taipei, Taiwan
| | | | - Chien-Ming Chu
- Biomedical Development Center, Mackay Memorial Hospital, Taipei, Taiwan
| | - Ya-Lin Chan
- Animal Centre, Mackay Memorial Hospital, Taipei, Taiwan
| | | | - Ting-Kuo Chang
- Department of Orthopedic Surgery, Mackay Memorial Hospital, Taipei, Taiwan
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11
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Chang TK, Zhong YH, Liu SC, Huang CC, Tsai CH, Lee HP, Wang SW, Hsu CJ, Tang CH. Apelin Promotes Endothelial Progenitor Cell Angiogenesis in Rheumatoid Arthritis Disease via the miR-525-5p/Angiopoietin-1 Pathway. Front Immunol 2021; 12:737990. [PMID: 34659230 PMCID: PMC8511637 DOI: 10.3389/fimmu.2021.737990] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/13/2021] [Indexed: 12/13/2022] Open
Abstract
Angiogenesis is a critical process in the formation of new capillaries and a key participant in rheumatoid arthritis (RA) pathogenesis. The adipokine apelin (APLN) plays critical roles in several cellular functions, including angiogenesis. We report that APLN treatment of RA synovial fibroblasts (RASFs) increased angiopoietin-1 (Ang1) expression. Ang1 antibody abolished endothelial progenitor cell (EPC) tube formation and migration in conditioned medium from APLN-treated RASFs. We also found significantly higher levels of APLN and Ang1 expression in synovial fluid from RA patients compared with those with osteoarthritis. APLN facilitated Ang1-dependent EPC angiogenesis by inhibiting miR-525-5p synthesis via phospholipase C gamma (PLCγ) and protein kinase C alpha (PKCα) signaling. Importantly, infection with APLN shRNA mitigated EPC angiogenesis, articular swelling, and cartilage erosion in ankle joints of mice with collagen-induced arthritis. APLN is therefore a novel therapeutic target for RA.
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Affiliation(s)
- Ting-Kuo Chang
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan.,Division of Spine Surgery, Department of Orthopedic Surgery, MacKay Memorial Hospital, New Taipei, Taiwan
| | - You-Han Zhong
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Shan-Chi Liu
- Department of Medical Education and Research, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Chien-Chung Huang
- School of Medicine, China Medical University, Taichung, Taiwan.,Division of Immunology and Rheumatology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chun-Hao Tsai
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan.,Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Hsiang-Ping Lee
- School of Chinese Medicine, China Medical University, Taichung, Taiwan.,Department of Chinese Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Shih-Wei Wang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.,Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.,Institute of Biomedical Sciences, Mackay Medical College, Taipei, Taiwan
| | - Chin-Jung Hsu
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan.,School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan.,School of Medicine, China Medical University, Taichung, Taiwan.,Chinese Medicine Research Center, China Medical University, Taichung, Taiwan.,Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
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12
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Lin CH, Chang YC, Chang TK, Huang CH, Lu YC, Huang CH, Chen MJ. Enhanced expression of coxsackievirus and adenovirus receptor in lipopolysaccharide-induced inflammatory macrophages is through TRIF-dependent innate immunity pathway. Life Sci 2020; 265:118832. [PMID: 33259866 DOI: 10.1016/j.lfs.2020.118832] [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] [Received: 07/09/2020] [Revised: 11/17/2020] [Accepted: 11/23/2020] [Indexed: 10/22/2022]
Abstract
AIMS Inflammatory macrophages have been proposed as a therapeutic target for joint disorders caused by inflammation. This study aimed to investigate the expression and regulation of coxsackievirus-adenovirus receptor (CAR) in lipopolysaccharide (LPS)-stimulated inflammatory macrophages whereby to evaluate the feasibility of virus-directed enzyme prodrug therapy (VDEPT). MAIN METHODS Macrophage cell lines (RAW264.7 and J774A.1) and primary macrophage cells derived from rat spleen were used to evaluate the expression of CAR protein or CAR mRNA. Specific inhibitors for TLR4 pathway were used to investigate the regulation of CAR expression. CAR expression in rat joints was documented by immunohistochemistry. Conditionally replicating adenovirus, CRAd-EGFP(PS1217L) or CRAd-NTR(PS1217H6), and non-replicating adenovirus CTL102 were used to transduce genes for enhanced green fluorescent protein (EGFP) or nitroreductase (NTR), respectively. The expression of EGFP, NTR, and the toxicity induced by CB1954 activation were evaluated. KEY FINDINGS The in vitro experiments revealed that CAR upregulation was mediated through the TLR4/TRIF/IRF3 pathway in LPS-stimulated inflammatory macrophage RAW264.7 and J774A.1 cells. The inflammatory RAW264.7 cells upregulated CAR expression following LPS stimulation, leading to higher infectability, increased NTR expression, and enhanced sensitization to CB1954. In animal experiments, the induction of CAR expression was observed in the CD68-expressing primary macrophages and in the CD68-expressing macrophages within joints following LPS stimulation. SIGNIFICANCE In conclusion, we report an enhanced CAR expression in inflammatory macrophages in vitro and in vivo through the immune response elicited by LPS. Thus, the TLR4/TRIF/IRF3 pathway of macrophages, when activated, could facilitate the therapeutic application of adenovirus-mediated VDEPT.
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Affiliation(s)
- Chi-Hsin Lin
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan; Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan City, Taiwan
| | - Yuan-Ching Chang
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Ting-Kuo Chang
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Department of Orthopedics, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Chang-Hung Huang
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan; Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Yung-Chang Lu
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Department of Orthopedics, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Chun-Hsiung Huang
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Department of Orthopedics, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Ming-Jen Chen
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.
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13
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Abstract
Aims The material and design of knee components can have a considerable effect on the contact characteristics of the tibial post. This study aimed to analyze the stress distribution on the tibial post when using different grades of polyethylene for the tibial inserts. In addition, the contact properties of fixed-bearing and mobile-bearing inserts were evaluated. Methods Three different grades of polyethylene were compared in this study; conventional ultra high molecular weight polyethylene (UHMWPE), highly cross-linked polyethylene (HXLPE), and vitamin E-stabilized polyethylene (VEPE). In addition, tibial baseplates with a fixed-bearing and a mobile-bearing insert were evaluated to understand differences in the contact properties. The inserts were implanted in neutral alignment and with a 10° internal malrotation. The contact stress, von Mises stress, and equivalent plastic strain (PEEQ) on the tibial posts were extracted for comparison. Results The stress and strain on the tibial post for the three polyethylenes greatly increased when the insert was placed in malrotation, showing a 38% to 56% increase in von Mises stress and a 335% to 434% increase in PEEQ. The VEPE insert had the lowest PEEQ among the three materials. The mobile-bearing design exhibited a lower increase in stress and strain around the tibial posts than the fixed-bearing design. Conclusion Using VEPE for the tibial component potentially eliminates the risk of material permanent deformation. The mobile-bearing insert can help to avoid a dramatic increase in plastic strain around the tibial post in cases of malrotation. The mobility allows the pressure to be distributed on the tibial post and demonstrated lower stresses with all three polyethylenes simulated. Cite this article: Bone Joint Res 2020;9(11):768–777.
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Affiliation(s)
- Chang-Hung Huang
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,School of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Institute of Geriatric Welfare Technology and Science, MacKay Medical College, New Taipei City, Taiwan
| | - Yung-Chang Lu
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
| | - Lin-I Hsu
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan
| | - Jiann-Jong Liau
- School of Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan
| | - Ting-Kuo Chang
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chun-Hsiung Huang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Orthopaedic Surgery, Changhua Christian Hospital, Changhua, Taiwan
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Chang TK, Wang YH, Kuo SJ, Wang SW, Tsai CH, Fong YC, Wu NL, Liu SC, Tang CH. Apelin enhances IL-1β expression in human synovial fibroblasts by inhibiting miR-144-3p through the PI3K and ERK pathways. Aging (Albany NY) 2020; 12:9224-9239. [PMID: 32420902 PMCID: PMC7288923 DOI: 10.18632/aging.103195] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 09/18/2019] [Accepted: 03/29/2020] [Indexed: 01/15/2023]
Abstract
Much data suggests intersecting activities between the adipokine apelin (APLN) and the pathologic processes of obesity and osteoarthritis (OA), with APLN modulating cartilage, synovium, bone, and various immune cell activities. The synovium plays an important role in the pathogenesis of OA. We investigated the crosstalk between APLN, a major OA-related adipokine, and interleukin 1 beta (IL-1β), a major proinflammatory cytokine, in human OA synovial fibroblasts (OASFs). We showed that APLN stimulated the synthesis of IL-1β in a concentration- and time-dependent manner, which was mitigated by blockade of the PI3K and ERK pathway. We also showed that APLN inhibited the expression of miRNA-144-3p, which blocks IL-1β transcription; this suppression activity was reversed via blockade of the PI3K and ERK pathway. Moreover, pathologic changes in OA cartilage were rescued when APLN was silenced by shAPLN transfection both in vitro and in vivo. Our evidence is the first to show that APLN stimulates the expression of IL-1β by activating the PI3K and ERK pathway and suppressing downstream expression of miRNA-144-3p in OASFs. We also demonstrate that knockdown of APLN expression by shAPLN transfection ameliorated changes in OA cartilage severity. These results shed light on OA pathogenesis and suggest a novel treatment pathway.
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Affiliation(s)
- Ting-Kuo Chang
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan.,Division of Spine Surgery, Department of Orthopedic Surgery, MacKay Memorial Hospital, New Taipei, Taiwan
| | - Yu-Han Wang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Shu-Jui Kuo
- School of Medicine, China Medical University, Taichung, Taiwan.,Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Shih-Wei Wang
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan.,Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chun-Hao Tsai
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan.,Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
| | - Yi-Chin Fong
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan.,Department of Orthopaedic Surgery, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Nan-Lin Wu
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan.,Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Shan-Chi Liu
- Department of Medical Education and Research, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan.,School of Medicine, China Medical University, Taichung, Taiwan.,Chinese Medicine Research Center, China Medical University, Taichung, Taiwan.,Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
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15
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Chang TK, Lu YC, Yeh ST, Lin TC, Huang CH, Huang CH. In vitro and in vivo Biological Responses to Graphene and Graphene Oxide: A Murine Calvarial Animal Study. Int J Nanomedicine 2020; 15:647-659. [PMID: 32099357 PMCID: PMC6996553 DOI: 10.2147/ijn.s231885] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/09/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Graphene and its derivatives have recently gained popularity in the biomedical field. Previous studies have confirmed that both the mechanical strength and wear resistance of graphene-containing polyethylene have been greatly improved. Therefore, it is being considered as an alternative for artificial joint replacement liners. Based on the literature, the wear debris generated from the traditional polymers used for orthopedic liners could lead to particle-induced osteolysis and, consequently, failure of joint replacement. However, the biological response of this novel graphene-based polymer is still unclear. Therefore, the current study aimed to investigate the in vitro and in vivo biological effects of graphene and graphene oxide (GO) particles on bone. MATERIALS AND METHODS The biological responses of graphene and GO particles were tested via in vitro and murine calvarial in vivo models. In the in vitro model, murine macrophage cells were mixed with particles and hydrogel and printed into two differently designed scaffolds; the induced proinflammatory cytokines were then tested. In the murine in vivo model, the particle size distribution was measured via SEM, and these particles were then administrated in the calvarial area, referring to our established model. A micro-CT and histological analysis were performed to examine the biological effects of the particles on bone health. The data were analyzed via the one-way analysis of variance to determine the differences between the groups. RESULTS Both graphene and GO induced significantly higher TNF-α and IL-6 secretion compared with the control in the three-dimensional in vitro model. In the murine calvarial in vivo test, the graphene and GO particles increased the bone mass compared with the sham groups in the micro-CT analysis. Bone formation was also observed in the histological analysis. CONCLUSION In these in vivo and in vitro studies, the graphene and GO wear debris did not seem to induce harmful biological response effect to bone. Bone formation around the skull was observed in the calvarial model instead. Graphene-containing biomaterials could be a suitable new material for application in orthopedic prostheses due to their benefit of eliminating the risk of particle-induce osteolysis.
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Affiliation(s)
- Ting-Kuo Chang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medical Research, MacKay Memorial Hospital, Taipei County, Taiwan
| | - Yung-Chang Lu
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medical Research, MacKay Memorial Hospital, Taipei County, Taiwan
| | - Shu-Ting Yeh
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medical Research, MacKay Memorial Hospital, Taipei County, Taiwan
| | - Tzu-Chiao Lin
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medical Research, MacKay Memorial Hospital, Taipei County, Taiwan
| | - Chun-Hsiung Huang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medical Research, MacKay Memorial Hospital, Taipei County, Taiwan
- Department of Orthopaedic Surgery, Changhua Christian Hospital, Changhua, Taiwan
| | - Chang-Hung Huang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medical Research, MacKay Memorial Hospital, Taipei County, Taiwan
- Department of Dentistry, National Yang-Ming University, Taipei, Taiwan
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Yang CY, Chen C, Lin CY, Chen YH, Lin CY, Chi CW, Chen YJ, Liu SC, Chang TK, Tang CH, Lai YW, Tsai HJ, Chen JJ, Wang SW. Garcimultiflorone K inhibits angiogenesis through Akt/eNOS- and mTOR-dependent pathways in human endothelial progenitor cells. Phytomedicine 2019; 64:152911. [PMID: 31454653 DOI: 10.1016/j.phymed.2019.152911] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 03/13/2019] [Accepted: 04/01/2019] [Indexed: 06/10/2023]
Abstract
Background Garcimultiflorone K is a novel polyprenylated polycyclic acylphloroglucinol isolated from the stems of Garcinia multiflora that exhibits promising anti-angiogenic activity in human endothelial progenitor cells (EPCs). Purpose This study sought to determine the underlying anti-angiogenic mechanisms and pharmacological properties of garcimultiflorone K. Methods We examined the anti-angiogenic effects of garcimultiflorone K and its mechanisms of action using in vitro EPC models and in vivo zebrafish embryos. Results EPCs proliferation, migration, differentiation and capillary-like tube formation were effectively and concentration-dependently inhibited by garcimultiflorone K without any signs of cytotoxicity. Our investigations revealed that garcimultiflorone K suppressed EPCs angiogenesis through Akt, mTOR, p70S6K, and eNOS signaling cascades. Notably, garcimultiflorone K dose-dependently impeded angiogenesis in zebrafish embryos. Conclusion Our data demonstrate the anti-angiogneic effects of garcimultiflorone K in both in vitro and in vivo models. Garcimultiflorone K appears to have potential in the treatment of angiogenesis-related diseases.
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Affiliation(s)
- Chen-Yu Yang
- Department of Orthopaedics, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chi Chen
- Department of Medicine, Mackay Medical College, No. 46, Sec. 3, Zhongzheng Rd., Sanzhi Dist., New Taipei City, Taiwan
| | - Cheng-Yung Lin
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan
| | - Yi-Hsuan Chen
- Department of Medicine, Mackay Medical College, No. 46, Sec. 3, Zhongzheng Rd., Sanzhi Dist., New Taipei City, Taiwan
| | - Chih-Yang Lin
- Department of Medicine, Mackay Medical College, No. 46, Sec. 3, Zhongzheng Rd., Sanzhi Dist., New Taipei City, Taiwan
| | - Chih-Wen Chi
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Yu-Jen Chen
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan; Department of Radiation Oncology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Shih-Chia Liu
- Department of Orthopaedics, MacKay Memorial Hospital, Taipei, Taiwan
| | - Ting-Kuo Chang
- Department of Orthopaedics, MacKay Memorial Hospital, Taipei, Taiwan; Department of Medicine, Mackay Medical College, No. 46, Sec. 3, Zhongzheng Rd., Sanzhi Dist., New Taipei City, Taiwan
| | - Chih-Hsin Tang
- Chinese Medicine Research Center, China Medical University, Taichung, Taiwan; Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan; Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
| | - Yu-Wei Lai
- Division of Urology, Taipei City Hospital Renai Branch, Taipei, Taiwan; Department of Urology, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Huai-Jen Tsai
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan
| | - Jih-Jung Chen
- Faculty of Pharmacy, School of Pharmaceutical Sciences, National Yang-Ming University, No.155, Sec.2, Linong Street, Taipei, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan.
| | - Shih-Wei Wang
- Department of Medicine, Mackay Medical College, No. 46, Sec. 3, Zhongzheng Rd., Sanzhi Dist., New Taipei City, Taiwan; Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.
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18
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Chang TK, Hsu CC. Comparison of Different Pullout Test Setups for Evaluation of Bone–Implant Interfacial Strength of Anterior Lumbar Interbody Fusion Devices. J Med Biol Eng 2019. [DOI: 10.1007/s40846-018-0392-z] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Lu YC, Wu CY, Chang TK, Huang CH, Huang CH. Elastoplastic behavior of highly cross-linked and vitamin E-stabilized polyethylene - A biomechanical study. Clin Biomech (Bristol, Avon) 2018; 59:152-158. [PMID: 30245408 DOI: 10.1016/j.clinbiomech.2018.09.021] [Citation(s) in RCA: 5] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/12/2018] [Accepted: 09/18/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Vitamin E-stabilized cross-linked polyethylene has been touted to alleviate the negative effects of oxidation. Although it has demonstrated significant improvements in wear resistance, bio-tribology, and oxidative resistance, little is known about the effect of antioxidants and dosage of cross-linking on the mechanical strength. This study aimed to evaluate the mechanical properties of these novel materials, which are commonly used in orthopedic implants. METHODS Samples of different polymers were prepared with various levels of cross-linking and with or without vitamin E-stabilization and then tested according to ASTM D695 and D638. The elastoplastic characteristics under compression and tension were compared between the groups. FINDINGS Vitamin E-stabilized cross-linked polyethylene showed a significant increase in elastic modulus over other groups, with a maximum increase of 26% in compression and 40% in tension when compared to the highly cross-linked group without vitamin E stabilization. The elastoplastic behavior under compression differed to that in tension for all polymers, demonstrating the anisotropic characteristics of these polymers. INTERPRETATION The lower mechanical strength of highly cross-linked polyethylene has been a complication with the use of this polymer in orthopedic liners. This current study suggests that vitamin E-stabilized cross-linked polyethylene could be a suitable alternative material for knee implants because of its improved strength in resisting external forces.
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Affiliation(s)
- Yung-Chang Lu
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital (MMH), Taipei County, Taiwan; Department of Orthopaedic Surgery, MMH, Taipei, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Cheng-Yu Wu
- Department of Orthopaedic Surgery, MMH, Taipei, Taiwan; Institute of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan
| | - Ting-Kuo Chang
- Department of Orthopaedic Surgery, MMH, Taipei, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Chun-Hsiung Huang
- Department of Orthopaedic Surgery, MMH, Taipei, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Department of Orthopaedic Surgery, Changhau Christian Hospital, Changhau, Taiwan.
| | - Chang-Hung Huang
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital (MMH), Taipei County, Taiwan; Institute of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan; School of Dentistry, National Yang-Ming University, Taipei, Taiwan.
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Huang CH, Hsu LI, Chang TK, Chuang TY, Shih SL, Lu YC, Chen CS, Huang CH. Stress distribution of the patellofemoral joint in the anatomic V-shape and curved dome-shape femoral component: a comparison of resurfaced and unresurfaced patellae. Knee Surg Sports Traumatol Arthrosc 2017; 25:263-271. [PMID: 25539687 DOI: 10.1007/s00167-014-3485-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 07/25/2014] [Accepted: 12/11/2014] [Indexed: 11/27/2022]
Abstract
PURPOSE Whether to resurface the patella in knee replacement remains a controversial issue. The geometrical design of the trochlear groove in the femoral component could play an important role in determining the stress distribution on the patellofemoral joint, but this has not been sufficiently reported on. This study attempted to determine the effect of implant design on contact mechanics by means of a finite element method. METHODS Two designs, an anatomical V-shape design (VSD) and a dome-shape design (DSD), for the anterior trochlear surface in a contemporary femoral component were chosen for examining the contact characteristics. The use and absence of patella resurfacing was simulated. The stress and strain distribution on the patellar bone and the polyethylene component were calculated for comparison. RESULTS Without patellar resurfacing, the maximal compressive strain in the patellar bone in the VSD model was about 20 % lower than the DSD model. On the other hand, with resurfacing, the maximal strain for the VSD model was 13.3 % greater than for DSD. Uneven stress distribution at the bone-implant interface was also noted for the two designs. CONCLUSION The femoral component with a V-shape trochlear groove reduced the compressive strain on the unresurfaced patella. If resurfacing the patella, the femoral component with a curved domed-shape design might reduce the strain in the remaining patellar bone. Uneven stress could occur at the bone-implant interface, so design modifications for improving fixation strength and medialization of the patellar button would be helpful in reducing the risk of peg fracture or loosening. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Chang-Hung Huang
- Biomechanics Research Laboratory, Mackay Memorial Hospital, No. 45, Mingsheng Rd, Tamshui District, New Taipei City, 25160, Taiwan.,Department of Physical Therapy and Assistive Technology, National Yang-Ming University, No. 155, Sec. 2, Li-Nung St., Taipei, 112, Taiwan.,Institute of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan
| | - Lin-I Hsu
- Biomechanics Research Laboratory, Mackay Memorial Hospital, No. 45, Mingsheng Rd, Tamshui District, New Taipei City, 25160, Taiwan
| | - Ting-Kuo Chang
- Biomechanics Research Laboratory, Mackay Memorial Hospital, No. 45, Mingsheng Rd, Tamshui District, New Taipei City, 25160, Taiwan.,Department of Orthopaedic Surgery, Mackay Memorial Hospital, Taipei, Taiwan
| | - Tai-Yuan Chuang
- Department of Orthopedic Surgery, Taipei Medical University-Wan Fang Hospital, Taipei, Taiwan
| | - Shih-Liang Shih
- Department of Physical Therapy and Assistive Technology, National Yang-Ming University, No. 155, Sec. 2, Li-Nung St., Taipei, 112, Taiwan.,Department of Orthopaedic Surgery, Zhong-Xing Branch of Taipei-City Hospital, Taipei, Taiwan
| | - Yung-Chang Lu
- Biomechanics Research Laboratory, Mackay Memorial Hospital, No. 45, Mingsheng Rd, Tamshui District, New Taipei City, 25160, Taiwan. .,Department of Orthopaedic Surgery, Mackay Memorial Hospital, Taipei, Taiwan. .,Mackay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan.
| | - Chen-Sheng Chen
- Department of Physical Therapy and Assistive Technology, National Yang-Ming University, No. 155, Sec. 2, Li-Nung St., Taipei, 112, Taiwan.
| | - Chun-Hsiung Huang
- Biomechanics Research Laboratory, Mackay Memorial Hospital, No. 45, Mingsheng Rd, Tamshui District, New Taipei City, 25160, Taiwan.,Institute of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan.,Department of Orthopaedic Surgery, Mackay Memorial Hospital, Taipei, Taiwan
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Kao MH, Tsai YF, Chang TK, Wang JS, Chen CP, Chang YC. The effects of self-management intervention among middle-age adults with knee osteoarthritis. J Adv Nurs 2016; 72:1825-37. [PMID: 27029950 DOI: 10.1111/jan.12956] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2016] [Indexed: 11/30/2022]
Abstract
AIM The aim of this study was to explore the effects of a self-management intervention for middle-aged adults with knee osteoarthritis. BACKGROUND Knee osteoarthritis is a common cause of lower limb disability in middle-aged and older adults. Use of self-management interventions that apply the self-regulation theory have not been reported for patients with knee osteoarthritis. DESIGN A quasi-experimental design was applied. METHODS Knee osteoarthritis patients were recruited from two medical centres in northern Taiwan by convenience sampling between July 2013-May 2014. We developed a self-management intervention programme for knee osteoarthritis; participants began an individualized programme 4 weeks after recruitment. Effectiveness of the intervention was evaluated using the Knee Injury and Osteoarthritis Outcome Score, Health Care Questionnaire and the Short-Form Health Survey. A generalized estimating equation compared assessment scores for 105 participants after the intervention (10 and 18 weeks) with scores at 4 weeks. RESULTS Knee symptoms and physical function scores significantly improved and quality-of-life scores significantly increased while body mass index, unplanned medical consultations and doses of pain medication significantly decreased at 10 and 18 weeks compared with 4 weeks. After adjusting for the effect of time- and significant-related factors, knee symptoms and physical function, body mass index and quality of life significantly improved at 10 and 18 weeks compared with 4 weeks. CONCLUSIONS The self-management intervention based on self-regulation theory, improved participants' symptoms and functions of knee osteoarthritis, overall health and quality of life. Offering self-management interventions in clinical practice can be beneficial for patients with knee osteoarthritis.
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Affiliation(s)
- Mei-Hua Kao
- Department of Nursing, Mackay Junior College of Medicine, Nursing, and Management, New Taipei City, Taiwan
| | - Yun-Fang Tsai
- School of Nursing, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Ting-Kuo Chang
- Department of Medicine, Mackay Medical College, New Taipei city, Taiwan
| | - Jong-Shyan Wang
- Healthy Aging Research Center, Graduate Institute of Rehabilitation Science, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Chie-Pein Chen
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Yue-Cune Chang
- Institute of Life Science and Department of Mathematics, Tamkang University, Tamsui, New Taipei City, Taiwan
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Lu YC, Chang TK, Yeh ST, Fang HW, Lin CY, Hsu LI, Huang CH, Huang CH. The potential role of strontium ranelate in treating particle-induced osteolysis. Acta Biomater 2015; 20:147-154. [PMID: 25841346 DOI: 10.1016/j.actbio.2015.03.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 03/24/2015] [Accepted: 03/27/2015] [Indexed: 01/28/2023]
Abstract
Ultra high molecular weight polyethylene (UHMWPE) wear-particle-induced osteolysis is one of the major issues affecting the long-term survival of total joint prostheses. Currently, there are no effective therapeutic options to prevent osteolysis from occurring. The aim of this study was to evaluate the role of strontium ranelate (SR) in reducing the risk of particle-induced osteolysis. Forty-eight C57BL/6J ultra-high molecular weight polyethylene (UHMWPE) particle-induced murine calvarial osteolysis models were used. The mice were randomized into four groups as: sham (Group 1), UHMWPE particles (Group 2), and SR with UHMWPE particles (Group 3 and Group 4). Groups 1 to 3 were sacrificed at two weeks and group 4 was sacrificed at the fourth week. The skulls were then analyzed with a high-resolution micro-CT. Histological evaluation was then conducted and osteoclast numbers were analyzed for comparison. Based on the micro-CT, percentage bone volume and trabecular thickness were found to be significantly higher in Group 4 than in Group 2 (p<0.001). Osteoclast numbers in SR treated groups (Group 3 and Group 4) were reduced when compared to groups that did not receive SR treatment (Group 2). These results indicated that SR treatment helps to increase bone volume percentage and trabecular thickness and also suppresses osteoclast proliferation. It is suggested that oral SR treatment could serve as an alternative therapy for preventing particle-induced osteolysis.
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Huang CH, Lu YC, Chang TK, Hsiao IL, Su YC, Yeh ST, Fang HW, Huang CH. In vivo biological response to highly cross-linked and vitamin e-doped polyethylene--a particle-Induced osteolysis animal study. J Biomed Mater Res B Appl Biomater 2015; 104:561-7. [PMID: 25952769 DOI: 10.1002/jbm.b.33426] [Citation(s) in RCA: 15] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 03/06/2015] [Accepted: 03/27/2015] [Indexed: 01/13/2023]
Abstract
Polyethylene particle-induced osteolysis is the primary limitation in the long-term success of total joint replacement with conventional ultra high molecular weight polyethylene (UHMWPE). Highly cross-linked polyethylene (HXLPE) and vitamin E-doped cross-linked polyethylene (VE-HXLPE) have been developed to increase the wear resistance of joint surfaces. However, very few studies have reported on the incidence of particle-induced osteolysis for these novel materials. The aim of this study was to use a particle-induced osteolysis animal model to compare the in vivo biological response to different polymer particles. Three commercially available polymers (UHMWPE, HXLPE, and VE-HXLPE) were compared. Osseous properties including the bone volume relative to the tissue volume (BV/TV), trabecular thickness (Tb. Th), and bone mineral density (BMD) were examined using micro computed tomography. Histological analysis was used to observe tissue inflammation in each group. This study demonstrated that the osseous properties and noticeable inflammatory reactions were obviously decreased in the HXLPE group. When compared with the sham group, a decrease of 12.7% was found in BV/TV, 9.6% in BMD and 8.3% in Tb.Th for the HXLPE group. The heightened inflammatory response in the HXLPE group could be due to its smaller size and greater amount of implanted particles. Vitamin E diffused in vivo may not affect the inflammatory and osteolytic responses in this model. The morphological size and total cumulative amount of implanted particles could be critical factors in determining the biological response.
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Affiliation(s)
- Chang-Hung Huang
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital (MMH), Taipei, Taiwan.,Institue of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan
| | - Yung-Chang Lu
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital (MMH), Taipei, Taiwan.,Department of Orthopaedic Surgery, MMH, Taipei, Taiwan.,Department of Cosmetic Application and Management, MacKay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
| | - Ting-Kuo Chang
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital (MMH), Taipei, Taiwan.,Institue of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan.,Department of Orthopaedic Surgery, MMH, Taipei, Taiwan
| | - I-Lin Hsiao
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital (MMH), Taipei, Taiwan
| | - Yi-Ching Su
- Department of Chemical Engineering and Biotechnology and Institute of Biotechnology, National Taipei University of Technology, Taipei, Taiwan
| | - Shu-Ting Yeh
- Biomechanics Research Laboratory, Department of Medical Research, MacKay Memorial Hospital (MMH), Taipei, Taiwan
| | - Hsu-Wei Fang
- Department of Chemical Engineering and Biotechnology and Institute of Biotechnology, National Taipei University of Technology, Taipei, Taiwan
| | - Chun-Hsiung Huang
- Institue of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan.,Department of Orthopaedic Surgery, MMH, Taipei, Taiwan
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Chang TK, Hsu CC, Chen KT. Optimal screw orientation for the fixation of cervical degenerative disc disease using nonlinear C3-T2 multi-level spinal models and neuro-genetic algorithms. Acta Bioeng Biomech 2015; 17:59-66. [PMID: 26687896] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
PURPOSE Anterior cervical discectomy and fusion is a common surgical procedure performed to remove a degenerative or herniated disc in cervical spine. Unfortunately, clinical complications of anterior cervical plate (ACP) systems still occur, such as weak fixation stability and implant loosening. Previous researchers have attempted to ameliorate these complications by varying screw orientations, but the screw orientations are mainly determined according to the investigator's experiences. Thus, the aim of this study was to discover the optimal screw orientations of ACP systems to achieve acceptable fixation stability using finite element simulations and engineering algorithms. METHODS Three-dimensional finite element models of C3-T2 multi-level segments with an ACP system were first developed to analyze the fixation stability using ANSYS Workbench 14.5. Then, artificial neural networks were applied to create one objective function, and the optimal screw orientations of an ACP system were discovered by genetic algorithms. Finally, the numerical models and the optimization study were validated using biomechanical tests. RESULTS The results showed that the optimal design of the ACP system had highest fixation stability compared with other ACP designs. The neuro-genetic algorithm has effectively reduced the time and effort required for discovering for the optimal screw orientations of an ACP system. CONCLUSIONS The optimum screw orientation of the ACP system could be successfully discovered, and it revealed excellent fixation stability for the treatment of cervical degenerative disc disease. This study could directly provide the biomechanical rationale and surgical suggestion to orthopedic surgeons.
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Affiliation(s)
- Ting-Kuo Chang
- Department of Orthopedic Surgery, Mackay Memorial Hospital, Taipei 104, Taiwan, R.O.C
| | - Ching-Chi Hsu
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan, R.O.C
| | - Kuan-Ting Chen
- Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, R.O.C
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Chen LP, Chang TK, Huang TY, Kwok TG, Lu YC. The correlation between lateral bowing angle of the femur and the location of atypical femur fractures. Calcif Tissue Int 2014; 95:240-7. [PMID: 24980895 DOI: 10.1007/s00223-014-9887-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/10/2014] [Indexed: 12/18/2022]
Abstract
This study is the first to report the use of data on incomplete atypical femur fracture (AFF) to evaluate the curvature of femur and explore the relationship between lateral femoral bowing angle (FBA) and AAF location. In this study, we obtained 17 cases of incomplete AFF and calculated the accurate lateral FBA and location ratio of the incomplete fracture. Incomplete fracture location was defined as a percentage (length from lesion to greater trochanter tip/entire femur length %; greater trochanter tip: 0 %; femoral condyles: 100 %). A lateral FBA of 7° was set as the point of demarcation. Eleven femurs had a lateral FBA ≤ 7° (group 1), with a median lateral FBA of 4.75° (IQR 2.5-5.9°) and a median of incomplete AFF location at 25.2 % (IQR 23.4-30.1 %). Another six femurs had a FBA > 7° (group 2) with a median of 1.8° (IQR 10.2-14.3°) and a median location at 47.7 % (IQR 38.6-54.5 %). There was a significant statistical difference in location (p < 0.05) between the two groups. The rate of BP use was 87.5 % in group 1 which was higher than 60 % in group 2. There was some degree of positive correlation between the bowing angle and location in simple linear regression (r (2) = 0.549, p < 0.001, ß = 1.789). AAFs located in diaphysis were associated with large lateral FBA. On the other hand, AAFs located in subtrochanteric region were more commonly found in femurs with smaller lateral FBA. In conclusion, the degree of the FBA was associated with AFF location.
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Affiliation(s)
- Lei-Po Chen
- Department of Orthopedic, Mackay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Taipei City, 10449, Taiwan
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26
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Chen WC, Lai YS, Cheng CK, Chang TK. A cementless, proximally fixed anatomic femoral stem induces high micromotion with nontraumatic femoral avascular necrosis: A finite element study. J Orthop Translat 2014. [DOI: 10.1016/j.jot.2014.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
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Liu YC, Chang TK, Liu SC, Lu YC. Pulmonary embolism manifested as acute coronary syndrome after arthroscopic anterior cruciate ligament reconstruction. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.fjmd.2013.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Chuang MY, Chang TK, Huang CH, Huang TY. Failure of the rotating-hinge knee megaprosthesis. J Arthroplasty 2013; 28:543.e5-8. [PMID: 23146584 DOI: 10.1016/j.arth.2012.07.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 02/23/2012] [Revised: 06/29/2012] [Accepted: 07/24/2012] [Indexed: 02/01/2023] Open
Abstract
Recently, rotating hinge knee prostheses were applied more frequently due to improving modern implant designs. They are predominantly used in specific conditions with major bone defect or insufficiency of the collateral ligaments around the knee, often as salvage procedures. A case of rotating hinge knee megaprosthesis failure due to isolated tibial polyethylene stopper broken, which was never reported before, was investigated and treated in our institution. We suggested that rotating hinge knee prosthesis with incompetent medial collateral ligament is apt to failure due to the high valgus moment during gait. Sacrificing lateral collateral ligament or cutting the femur in slightly less than the normal 5° to 7° valgus may eliminate the risk of complication.
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Affiliation(s)
- Min-Yao Chuang
- Department of Orthopaedic Surgery, Mackay Memorial Hospital, Taipei, Taiwan
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Chang TK, Huang CH, Huang CH, Chen HC, Cheng CK. The influence of long-term treadmill exercise on bone mass and articular cartilage in ovariectomized rats. BMC Musculoskelet Disord 2010; 11:185. [PMID: 20727126 PMCID: PMC2936345 DOI: 10.1186/1471-2474-11-185] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [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: 04/09/2010] [Accepted: 08/20/2010] [Indexed: 11/18/2022] Open
Abstract
Background Loss of bone quality and deterioration of articular cartilage are commonly seen after menopause. While exercise may protect against tissue degeneration, a clear link has yet to be established. The aim of the present study is to investigate the influence of long-term treadmill exercise on changes in bone mass and articular cartilage in ovariectomized rats. Methods Sixty female Sprague-Dawley rats were randomly assigned to 4 groups: ovariectomized (OVX), ovariectomized plus treadmill exercise (OVX-RUN), treadmill exercise alone (RUN), and control (CON) groups. After 36 weeks, the following variables were compared among the 4 groups. Bone mass was evaluated by trabecular bone volume and bone mineral density (BMD). Articular cartilage in the knee joints was evaluated by histology analysis and a modified Mankin score. Results Rats in the ovariectomized groups (OVX and OVX-RUN) had significantly lower BMD and bone mass than the non-ovariectomized rats (CON and RUN), indicating that exercise did little to preserve bone mass. However, the sedentary OVX group had a significantly worse modified Mankin score (7.7 ± 1.4) than the OVX-RUN group (4.8 ± 1.0), whose scores did not differ significantly from the other 2 non-operated groups. The articular cartilage in the sedentary OVX rats was relatively thinner, hypocellular, and had more clefts than in the other 3 groups. Conclusion This study suggests that long-term exercise protects articular cartilage in OVX rats but does not retard the loss of bone mass seen in after menopause.
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Affiliation(s)
- Ting-Kuo Chang
- Institute of Biomedical Engineering, National Yang Ming University, Taipei, Taiwan
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Chang SF, Chang TK, Peng HH, Yeh YT, Lee DY, Yeh CR, Zhou J, Cheng CK, Chang CA, Chiu JJ. BMP-4 induction of arrest and differentiation of osteoblast-like cells via p21 CIP1 and p27 KIP1 regulation. Mol Endocrinol 2009; 23:1827-38. [PMID: 19819988 DOI: 10.1210/me.2009-0143] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Cell cycle regulation by differentiation signals is critical for eukaryote development. We investigated the roles of bone morphogenetic protein (BMP)-4, an important stimulator of osteoblast differentiation and bone formation, in regulating cell cycle distribution in four osteoblast-like cell lines and mouse primary osteoblasts, and the underlying mechanisms. In all cells used, BMP-4 induced G(0)/G(1) arrest. The molecular basis of the BMP-4 effect was analyzed, and the presentation on molecular mechanism is focused on human MG63 cells. BMP-4 induced p21(CIP1) and p27(KIP1) expressions and hence cell differentiation but had no effects on the expressions of cyclins A, B1, D1, and E, cyclin-dependent protein kinase-2, -4, and -6. Using specific small interfering RNA (siRNA), we found that BMP-4-induced G(0)/G(1) arrest, and p21(CIP1) and p27(KIP1) expressions were mediated by BMP receptor type IA (BMPRIA)-specific Sma- and Mad-related protein (Smad)1/5. BMP-4 induced transient phosphorylations of ERK; transfection of MG63 cells with ERK2, but not ERK1, -specific siRNA inhibited the BMP-4-induced responses in MG63 cells. Pretreatment of MG63 cells with Arg-Gly-Asp-Ser, which blocks the cell-extracellular matrix interaction, or transfection with beta(3) integrin-specific siRNA inhibited BMP-4-induced ERK and Smad1/5 phosphorylations. BMP-4 induced transient increases in associations of beta(3)-integrin with focal adhesion kinase and Shc, the dominant-negative mutants of which inhibited BMP-4-induced ERK and Smad1/5 phosphorylations. Our results indicate that BMP-4 induces G(0)/G(1) arrest and hence differentiation in osteoblast-like cells through increased expressions of p21(CIP1) and p27(KIP1), which are mediated by BMPRIA-specific Smad1/5. The extracellular matrix/beta(3) integrin/ focal adhesion kinase/Shc/ERK2 signaling pathway is involved in these BMP-4-induced responses in osteoblast-like cells.
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Affiliation(s)
- Shun-Fu Chang
- Division of Medical Engineering Research, National Chiao Tung University, Hsinchu 30010, Taiwan
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Abstract
Total knee arthroplasty (TKA) is considered as a standard procedure for the treatment of the severe degenerative knee joint. The outcomes of TKA have improved over the last few decades because of a better understanding of design features and surgical techniques. Contemporary tibial component designs in TKA can be subdivided into two groups (fixed or mobile-bearing) on the basis of different fundamental principles. The mobile-bearing knee is designed with better biomechanical concepts than the fixed-bearing knee, in terms of providing congruity and mobility of tibial bearing. It is expected that the mobile-bearing knee could resolve the problems of component wear and component loosening as seen in fixed-bearing knees. However, the long-term durability of mobile-bearing knees has not been extensively proven to have better outcomes than that of fixed-bearing knees. There are some potential clinical complications of mobile-bearing knees that must be addressed. On the basis of our previous clinical experience and a retrieval analysis, this article summarizes five specific complications including (1) early or late dislocation of the mobile-bearing component, (2) failure or dislodging of the meniscal bearing, (3) hemarthrosis associated with a failure of the meniscal-bearing knee, (4) failure of the patellar component, and (5) higher prevalence of osteolysis. Before taking advantage of mobile bearing, we should consider these specific clinical complications, which were not found in the fixed-bearing TKA.
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Affiliation(s)
- Chun-Hsiung Huang
- Biomechanics Research Lab.; Dept. of Orthopaedic Surgery, Mackay Memorial Hospital; Orthopaedic Biomechanics Lab,; Joint Prosthesis Technology Research Center; Institute of Biomedical Engineering, National Yang Ming University, Taipei, Taiwan
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Wang JP, Zhong ZC, Cheng CK, Chen CS, Yu CH, Chang TK, Wei SH. Finite element analysis of the spondylolysis in lumbar spine. Biomed Mater Eng 2006; 16:301-8. [PMID: 17075165] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Spondylolysis is a fracture of the bone lamina in the pars interarticularis and has a high risk of developing spondylolisthesis, as well as traction on the spinal cord and nerve root, leading to spinal disorders or low back pain when the lumbar spine is subjected to high external forces. Previous studies mostly investigated the mechanical changes of the endplate in spondylolysis. However, little attention has been focused on the entire structural changes that occur in spondylolysis. Therefore, the purpose of this study was to evaluate the biomechanical changes in posterior ligaments, disc, endplate, and pars interarticularis between the intact lumbar spine and spondylolysis. A total of three finite element models, namely the intact L2-L4 lumbar spine, lumbar spine with unilateral pars defect and with bilateral pars defect were established using a software ANSYS 6.0. A loading of 10 N.m in flexion, extension, left torsion, right torsion, left lateral bending, and right lateral bending respectively were imposed on the superior surface of the L2 body. The bottom of the L4 vertebral body was completely constrained. The finite element models estimated that the lumbar spine with a unilateral pars defect was able to maintain spinal stability as the intact lumbar spine, but the contralateral pars experienced greater stress. For the lumbar spine with a bilateral pars defect, the rotation angle, the vertebral body displacement, the disc stress, and the endplate stress, was increased more when compared to the intact lumbar spine under extension or torsion.
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Affiliation(s)
- Jung-Pin Wang
- Department of Orthopaedic Surgery, Mackay Memorial Hospital, Taipei, Taiwan
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Liang DC, Chan TT, Lin KH, Lin DT, Lu MY, Chen SH, Liu HC, Lin MT, Lee MT, Shu SG, Chang TK, Chen JS, Hsiao CC, Hung IJ, Hsieh YL, Chen RL, Cheng SN, Chang WH, Lee CH, Lin KS. Improved treatment results for childhood acute myeloid leukemia in Taiwan. Leukemia 2005; 20:136-41. [PMID: 16281075 DOI: 10.1038/sj.leu.2403979] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To improve treatment results for children with de novo acute myeloid leukemia (AML), we introduced a novel protocol, Taiwan Pediatric Oncology Group-AML-97A, for AML other than acute promyelocytic leukemia (APL), for which modified conventional protocols were used. From January 1, 1997, to December 31, 2002, 141 children younger than 17 years old with de novo AML were enrolled. In total, 117 patients with non-APL AML were treated with induction therapy of idarubicin and cytarabine (Ara-C), postremission therapy with high-dose Ara-C - containing regimens for four monthly courses, and moderate-dose therapy with idarubicin and Ara-C for four monthly courses. The first 19 patients with APL were treated with all-trans retinoic acid, idarubicin and Ara-C, with the remaining five patients receiving all-trans retinoic acid and idarubicin, followed by maintenance therapy for 2 years. Stem cell transplantation was performed in 29 patients in first remission with a similar outcome as chemotherapy alone. The remission rate in the AML-97A study was 90%, the 5-year survival 51 +/- 5.3% (s.e.) and the 5-year event-free survival 50 +/- 4.8%; for APL, these were 100%, 86 +/- 7.0, and 75 +/- 9.8%. For the whole group, the 5-year survival was 57 +/- 4.7% and the 5-year event-free survival 54 +/- 4.4%. The AML-97A regimen was well tolerated.
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Affiliation(s)
- D C Liang
- Pediatric Hematology-Oncology Division, Mackay Memorial Hospital, Taipei, Taiwan
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Abstract
Fault tolerant control of dynamic processes is investigated in this paper using an auto-tuning PID controller. A fault tolerant control scheme is proposed composing an auto-tuning PID controller based on an adaptive neural network model. The model is trained online using the extended Kalman filter (EKF) algorithm to learn system post-fault dynamics. Based on this model, the PID controller adjusts its parameters to compensate the effects of the faults, so that the control performance is recovered from degradation. The auto-tuning algorithm for the PID controller is derived with the Lyapunov method and therefore, the model predicted tracking error is guaranteed to converge asymptotically. The method is applied to a simulated two-input two-output continuous stirred tank reactor (CSTR) with various faults, which demonstrate the applicability of the developed scheme to industrial processes.
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Affiliation(s)
- Ding-Li Yu
- Control Systems Research Group, School of Engineering, Liverpool John Moores University, Liverpool, L3 3AF, UK
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Affiliation(s)
- T K Chang
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British Columbia, Canada
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Affiliation(s)
- D J Waxman
- Department of Biology, Boston University, Boston, MA, USA
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Crespi CL, Chang TK, Waxman DJ. High-Performance Liquid Chromatographic Analysis of CYP2CSCatalyzed Paclitaxel 6α-Hydroxylation. Cytochrome P450 Protocols 2003; 107:123-7. [PMID: 14577220 DOI: 10.1385/0-89603-519-0:123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Waxman DJ, Chang TK. Thin-layer chromatographic analysis of human CYP3A-catalyzed testosterone 6 beta-hydroxylation. Methods Mol Biol 2003; 107:153-61. [PMID: 14577225 DOI: 10.1385/0-89603-519-0:153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Affiliation(s)
- D J Waxman
- Department of Biology, Boston University, Boston, MA, USA
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Crespi CL, Chang TK, Waxman DJ. CYP2C19-mediated (S)-mephenytoin 4'-hydroxylation assayed by high-performance liquid chromatography with radiometric detection. Methods Mol Biol 2003; 107:135-9. [PMID: 14577222 DOI: 10.1385/0-89603-519-0:135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Chang TK, Crespi CL, Waxman DJ. Determination of the CYP2B6 component of 7-ethoxy-4-trifluoromethylcoumarin O-deethylation activity in human liver microsomes. Methods Mol Biol 2003; 107:117-22. [PMID: 14577219 DOI: 10.1385/0-89603-519-0:117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Affiliation(s)
- T K Chang
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British Columbia, Canada
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Crespi CL, Chang TK, Waxman DJ. Determination of CYP4A11-catalyzed lauric acid 12-hydroxylation by high-performance liquid chromatography with radiometric detection. Methods Mol Biol 2003; 107:163-7. [PMID: 14577226 DOI: 10.1385/0-89603-519-0:163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
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42
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Waxman DJ, Chang TK. An isocratic high-performance liquid chromatographic assay for CYP7A1-catalyzed cholesterol 7 alpha-hydroxylation. Methods Mol Biol 2003; 107:169-73. [PMID: 14577227 DOI: 10.1385/0-89603-519-0:169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Affiliation(s)
- D J Waxman
- Department of Biology, Boston University, Boston, MA, USA
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Abstract
Genetic variability in drug response occurs as a result of molecular alterations at the level of drug-metabolising enzymes, drug targets/receptors, and drug transport proteins. In this paper, we discuss the possibility that therapeutic drug monitoring (TDM) in the future will involve not the mere measurement and interpretation of drug concentrations but will include both traditional TDM and pharmacogenetics-oriented TDM. In contrast to traditional TDM, which cannot be performed until after a drug is administered to the patient. pharmacogenetics-oriented TDM can be conducted even before treatment begins. Other advantages of genotyping over traditional TDM include, but are not limited to, the following: (i) it does not require the assumption of steady-state conditions (or patient compliance) for the interpretation of results; (ii) it can often be performed less invasively (with saliva, hair root or buccal swab samples); (iii) it can provide predictive value for multiple drugs [e.g. a number of cytochrome P450 (CYP) 2D6, CYP2C 19 or CYP2C9 substrates] rather than a single drug; (iv) it provides mechanistic, instead of merely descriptive, information; and (v) it is constant over an individual's lifetime (and not influenced by concurrent drug administration, alteration in hormonal levels or disease states). Pharmacogenetic information can be applied a priori for initial dose stratification and identification of cases where certain drugs are simply not effective. However, traditional TDM will still be required for all of the reasons that we use it now. In current clinical practice, pharmacogenetic testing is performed for only a few drugs (e.g. mercaptopurine, thioguanine, azathioprine, trastuzumab and tacrine) and in a limited number of teaching hospitals and specialist academic centres. We propose that other drugs (e.g. warfarin, phenytoin, codeine, oral hypoglycaemics, tricyclic antidepressants, aminoglycosides, digoxin, cyclosporin, cyclophosphamide, ifosfamide, theophylline and clozapine) are potential candidates for pharmacogenetics-oriented TDM. However, prospective studies of phaymacogenetics-oriented TDM must be performed to determine its efficacy and cost effectiveness in optimising therapeutic effects while minimising toxicity. In the future, in addition to targeting a patient's drug concentrations within a therapeutic range, pharmacists are likely to be making dosage recommendations for individual drugs on the basis of the individual patient's genotype. As we enter the era of personalised drug therapy, we will be able to identify not only the best drug to be administered to a particular patient, but also the most effective and safest dosage from the outset of therapy.
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Affiliation(s)
- M H Ensom
- Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, Canada.
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O'Reilly BA, Kosaka AH, Chang TK, Ford AP, Popert R, McMahon SB. A quantitative analysis of purinoceptor expression in the bladders of patients with symptomatic outlet obstruction. BJU Int 2002; 87:617-22. [PMID: 11350400 DOI: 10.1046/j.1464-410x.2001.02179.x] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To compare the expression of the seven known P2X receptors in human bladder from male patients with detrusor instability caused by symptomatic bladder outlet obstruction with that from control bladders, using a quantitative reverse transcription-polymerase chain reaction (RT-PCR) method. PATIENTS AND METHODS Real-time quantitative RT-PCR provides a system for detecting and analysing RNA. Bladder biopsies were obtained from nine patients undergoing prostate surgery and control biopsies were obtained from eight age-matched men undergoing routine bladder endoscopy studies, and who were asymptomatic. Total RNA was extracted from each sample and 10 ng of this used for individual PCR reactions. The expression levels of the seven P2X genes in the total RNA were then determined. RESULTS In the control bladder, P2X1 was by far the predominant purinergic receptor at the RNA level, the remainder consistently present in the order P2X1 >> P2X4 > P2X2 > P2X7 > P2X5 >> P2X3 = P2X6 = 0. Calponin, a smooth muscle-specific protein, was used as a marker for smooth muscle content. In bladder from symptomatic patients, the P2X1/calponin ratio was greater than that in controls (P = 0.016). There appeared to be no difference in P2X2, but P2X4, P2X5, and P2X7 were all greater in the symptomatic bladder than in the controls, although these differences were not significant. CONCLUSION P2X1 is the predominant purinoceptor subtype in the human male bladder, consistent with pharmacological evidence. The amount of P2X1 receptor per smooth muscle cell is greater in the obstructed than in control bladder, suggesting an increase in purinergic function in the unstable bladder arising from bladder outlet obstruction.
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Affiliation(s)
- B A O'Reilly
- Guy's and St Thomas' Hospitals, London, Neurobiology Unit, Roche Bioscience, Palo Alto, CA, USA. barry.o'
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Shaw CK, Li YM, Wang LY, Chang TK, Li Y, Tzen KY. Prediction of bone fracture by bone mineral density in Taiwanese. J Formos Med Assoc 2001; 100:805-10. [PMID: 11802519] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND AND PURPOSE This study evaluated whether lumbar spine bone mineral density (BMDL) and the rate of change of BMDL could predict the risk of bone fracture in Taiwanese. METHODS In 1989, a baseline survey was carried out in Lin-Kou Township. BMDL was measured using dual photon absorptiometry in 404 healthy volunteers. In 1994/95, a second survey was conducted to reexamine the BMDL and fracture history as well as the risk factors associated with fracture in these subjects. Fractures were classified according to the causes of the injury as severe or mild trauma. RESULTS Of the 404 original examinees, 381 (79%) participated in the second survey. Twenty-six subjects had experienced a total of 32 fracture incidents during their lifetime and 10 subjects had experienced fracture during the observation period. After adjusting for the effect of body mass index, gender, and age, each standard deviation of decrease in BMDL was found to be associated with a significant 2.38-fold increase in the risk of mild trauma fracture, and a BMDL below the fracture threshold was associated with a 3.93-fold increase of fracture risk. Higher BMDL change rates were found in subjects with a history of fracture. CONCLUSION This study indicates the importance of maintaining the BMDL above the fracture threshold (1 g/cm2). The strategy for fracture prevention should be directed at prevention of age-related bone loss.
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Affiliation(s)
- C K Shaw
- Department of Public Health, Tzu Chi University, 701, Section 3, Chung-Yang Road, Hualien, Taiwan
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Chang TK, Chen J, Lee WB. Differential inhibition and inactivation of human CYP1 enzymes by trans-resveratrol: evidence for mechanism-based inactivation of CYP1A2. J Pharmacol Exp Ther 2001; 299:874-82. [PMID: 11714871] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
trans-Resveratrol (3,5,4'-trihydroxy-trans-stilbene) has been reported to confer chemoprotection against 7,12-dimethylbenz[a]anthracene (DMBA)-induced carcinogenicity in a murine model. A potential mechanism for this effect by trans-resveratrol is inhibition of DMBA-bioactivating cytochrome P450 (CYP) enzymes such as CYP1B1, CYP1A1, and CYP1A2. In the present study, we examined in detail the in vitro inhibitory effects of trans-resveratrol on these three human CYP enzymes. trans-Resveratrol decreased 7-ethoxyresorufin O-dealkylation activity catalyzed by human recombinant CYP1B1, CYP1A1, and CYP1A2 in a concentration-dependent manner and by a mixed type of inhibition. This direct inhibition was enzyme-selective, as judged by the differences in the apparent K(i) values (0.8 +/- 0.1 microM, 1.2 +/- 0.1 microM, and 15.5 +/- 1.1 microM for CYP1B1, CYP1A1, and CYP1A2, respectively). Preincubating recombinant CYP1A2 or human liver microsomes with trans-resveratrol and NADPH prior to the initiation of substrate oxidation resulted in a time- and concentration-dependent decrease in catalytic activity. The inactivation of liver microsomal CYP1A2 by trans-resveratrol required NADPH, was not reversible by dialysis, and was not affected by the trapping agents glutathione, N-acetylcysteine, catalase, or superoxide dismutase, but was attenuated by a CYP1A2 substrate, imipramine. Analysis of a panel of individual human liver microsomes showed intersample differences in the response to the in vitro inactivation by trans-resveratrol. In contrast to CYP1A2, CYP1B1 was not subject to inactivation by this compound and the reduction in CYP1A1 activity was time- but not concentration-dependent. In summary, trans-resveratrol differentially inhibited human CYP1 enzymes and this occurred by two distinct mechanisms: direct inhibition (mainly CYP1B1 and CYP1A1) and mechanism-based inactivation (CYP1A2).
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Affiliation(s)
- T K Chang
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British Columbia, Canada.
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Xu Z, Kawai M, Bandiera SM, Chang TK. Influence of dietary zinc deficiency during development on hepatic CYP2C11, CYP2C12, CYP3A2, CYP3A9, and CYP3A18 expression in postpubertal male rats. Biochem Pharmacol 2001; 62:1283-91. [PMID: 11705462 DOI: 10.1016/s0006-2952(01)00776-6] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The present study investigated the effect of dietary zinc deficiency during the developmental period on hepatic cytochrome P450 (CYP) expression in postpubertal male rats. Twenty-one-day-old weanling male Wistar rats were randomly assigned to one of the following dietary groups: zinc-adequate (31 mg zinc/kg diet); marginal zinc-deficient (3 mg zinc/kg diet); severe zinc-deficient (1 mg zinc/kg diet); or pair-fed control for either the marginal or severe zinc-deficient group. All rats were killed at 63 days of age. Compared with the corresponding pair-fed controls, marginal zinc deficiency decreased CYP2C11-mediated testosterone 2alpha- and 16alpha-hydroxylase activities by 43 and 42%, respectively, whereas severe zinc deficiency reduced each of these activities by approximately 60%. The decrease in CYP2C11 activity was accompanied by a reduction in CYP2C11 protein and mRNA levels, as assessed by immunoblot and reverse transcription-polymerase chain reaction (RT-PCR) assays, respectively. Additional RT-PCR analysis indicated that severe zinc deficiency decreased CYP3A2 and CYP3A18 mRNA levels by 49 and 43%, respectively, whereas it increased CYP2C12 (253%) and CYP3A9 (238%) mRNA expression. Plasma testosterone concentration was decreased by 67% in the marginal zinc-deficient group when compared with the corresponding pair-fed control group. By comparison, it was below the limit of quantification (0.2 ng/mL) in the severe zinc-deficient rats. Overall, these results indicate that dietary zinc deficiency during the developmental period feminized the hepatic gene expression of the sexually dimorphic CYP2C11, CYP3A2, CYP3A18, CYP2C12, and CYP3A9 in postpubertal male rats.
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Affiliation(s)
- Z Xu
- Food, Nutrition, and Health Program, The University of British Columbia, 2205 East Mall, V6T 1Z4, Vancouver, British Columbia, Canada.
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O'Reilly BA, Kosaka AH, Chang TK, Ford AP, Popert R, Rymer JM, McMahon SB. A quantitative analysis of purinoceptor expression in human fetal and adult bladders. J Urol 2001; 165:1730-4. [PMID: 11342965] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
PURPOSE In adults there is evidence that adenosine triphosphate acting at P2X receptors functions as a co-transmitter at vesical smooth muscle. The contractile mechanisms of human fetal bladder have been studied to a limited extent and it remains undetermined whether P2X receptors contribute. We compared the expression of the 7 known P2X receptors in fetal and adult human bladders using a quantitative polymerase chain reaction (PCR) based method. MATERIALS AND METHODS Real-time quantitative reverse transcriptase-PCR provides a system for the detection and analysis of RNA. Four complete cadaver fetal bladders were obtained at 16 weeks to full-term gestation and divided into a total of 12 segments. Adult bladder samples were obtained from 4 patients requiring bladder biopsy. Total RNA was extracted from each sample and 10 ng. were used for individual PCR reactions. An ABI 7700 machine (PE Applied Biosystems, California) determined expression levels of the 7 P2X genes in total RNA. RESULTS In adult bladders P2X1 was by far the predominant purinergic receptor at the messenger RNA level. The remaining purinergic receptors were consistently present in the order P2X1 >> P2X4 > P2X7 >> P2X5 > P2X2 >> P2X3 = P2X6 = 0. In fetal bladders the expression of P2X1 transcripts was much lower than in adult bladders, and P2X4 and P2X7 were also present. The rank order of the P2X transcript level was P2X1 = P2X4 > P2X7 >> P2X5 >> P2X2 >> P2X3 = P2X6 = 0. With increasing gestation the P2X receptor transcript level (expression) shifted from the dome to the body of the bladder. CONCLUSIONS P2X1 is the predominant purinoceptor subtype in adult human bladders, consistent with pharmacological evidence. The fetal expression of all P2X receptor transcripts is much lower than in adults, suggesting that purinergic transmission is of less importance. However, there are also several marked developmental changes in purinoceptor expression in the bladder, in that P2X4 is expressed in developing bladders at relatively high levels. There is also a marked developmental change in the regional distribution of purinoceptors. These changes are likely to reflect the changing role of purinergic transmission in the control of bladder motility during fetal maturation.
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Affiliation(s)
- B A O'Reilly
- Department of Gynaecology and Urology, Guy's and St. Thomas' Hospitals and Centre for Neuroscience Research, Kings College London, London, United Kingdom
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Kawai M, Bandiera SM, Chang TK, Bellward GD. Effect of exogenous growth hormone on somatic growth, gonadal development, and hepatic CYP2C11 and CYP2C12 expression in prepubertal intact male rats. Can J Physiol Pharmacol 2001; 79:352-61. [PMID: 11332513] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
The influence of exogenous growth hormone (GH) on pubertal maturation, as assessed by growth, age of preputial separation, testicular development, and hepatic expression of sexually dimorphic cytochrome P450 (CYP) enzymes, was investigated. Treatment of 22-day old prepubertal intact male rats with twice daily subcutaneous (s.c.) injections of rat recombinant GH (0.12 microg/g body weight) for 12 or 21 days did not affect body weight, skeletal growth, or testicular weight. By comparison, GH suppressed hepatic CYP2C1 enzyme activity, protein, and mRNA levels but induced CYP2C12 expression. GH suppressed CYP2C11 expression by approximately 60% in prepubertal rats as compared with 30% in adult rats, whereas it increased CYP2C12 levels to 80% of the normal female levels but had no effect in adult male rats. Twice daily intravenous injections of GH suppressed CYP2C11 only. Increasing the s.c. dose of GH 30-fold produced little or no additional change in CYP2C11 or CYP2C12 expression, whereas it modestly in creased body weight and skeletal growth and reduced testicular weight. Overall, the present study provides the first demonstration that prepubertal administration (22-33 days of age) of GH at a pharmacologically relevant dose (0.12 microg/g twice daily) suppressed hepatic expression of CYP2C11 in 34-day-old intact male rats, suggesting that in this age group the liver is intrinsically responsive to transcription factors involved in the regulation of GH-dependent, sex-specific CYP gene expression. A higher dose (3.6 microg/g) of GH administered during the prepubertal period was required to elicit a modest effect on somatic growth and gonadal development.
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Affiliation(s)
- M Kawai
- Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, Canada
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Chang TK, Yeung RK. Effect of trans-resveratrol on 7-benzyloxy-4-trifluoromethylcoumarin O-dealkylation catalyzed by human recombinant CYP3A4 and CYP3A5. Can J Physiol Pharmacol 2001; 79:220-6. [PMID: 11294598] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Red wine concentrate has been reported to inhibit the catalytic activity of human recombinant cytochrome P450 (CYP) 3A4. Wine contains many polyphenolic compounds, including trans-resveratrol, which is also available commercially as a nutraceutical product. In the present study, we examined the in vitro effect of trans-resveratrol on human CYP3A catalytic activity by employing recombinant CYP3A4 and CYP3A5 as model enzymes and 7-benzyloxy-4-trifluoromethylcoumarin (BFC) as a CYP3A substrate. Trans-resveratrol inhibited BFC O-dealkylation catalyzed by CYP3A4 and CYP3A5 in a concentration-dependent manner. In each case, the inhibition was noncompetitive, as determined by Lineweaver-Burk and Dixon plots of the enzyme kinetic data. The apparent Ki values (mean +/- SEM) for the inhibition by trans-resveratrol of BFC O-dealkylation catalyzed by CYP3A4 and CYP3A5 were 10.2+/-1.1 microM and 14.7+/-0.3 microM, respectively. Preincubation of trans-resveratrol with NADPH and CYP3A4 or CYP3A5 for 10 or 15 min prior to initiation of substrate oxidation did not enhance the inhibitory effect, suggesting that this compound was not a mechanism-based inactivator of CYP3A4 or CYP3A5 when BFC was used as the substrate. Overall, our study provides the first demonstration that trans-resveratrol inhibits, in vitro, a substrate oxidation reaction catalyzed by human recombinant CYP3A4 and CYP3A5.
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Affiliation(s)
- T K Chang
- Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, Canada.
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