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Miyashita T, Kato K, Yunde A, Ataka H, Tanno T. Comparison of facet fusion rates and clinical outcomes between cortical bone trajectory screw and percutaneous pedicle screw fixation for degenerative lumbar spondylolisthesis. Spine J 2024:S1529-9430(24)00102-5. [PMID: 38437917 DOI: 10.1016/j.spinee.2024.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/16/2024] [Accepted: 02/25/2024] [Indexed: 03/06/2024]
Abstract
BACKGROUND CONTEXT Cortical bone trajectory (CBT) screws have been introduced as an alternative technique for pedicle screw (PS) insertion because they have greater contact with the cortex and a greater uniaxial pullout load than traditional PS. CBT screwing can also minimize muscle dissection. However, CBT screws and traditional PSs have not yet been compared in terms of fusion rates and clinical outcomes for particular operative procedures. PURPOSE This study aimed to assess the fusion rate and clinical outcomes of facet fusion (FF) fixed with CBT screws (CBT-FF) and to compare them with those of FF fixed with percutaneous PS (PPS-FF). STUDY DESIGN Retrospective study. PATIENT SAMPLE Records of 68 patients who underwent CBT-FF for single-level degenerative lumbar spondylolisthesis (DLS) with at least 1 year of follow-up were retrospectively reviewed. The control group comprised 143 patients who underwent PPS-FF under the same conditions. OUTCOME MEASURES Computed tomography was performed to confirm fusion. Therapeutic effectiveness was assessed as a clinical outcome using the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ), Roland-Morris Disability Questionnaire (RMDQ), and visual analog scale (VAS) preoperatively and 1 year postoperatively. The rate of revision surgery was also calculated. Intraoperative blood loss was measured. METHODS Fusion rate, clinical outcomes, revision surgery rate, and intraoperative blood loss of CBT-FF and PPS-FF were compared. RESULTS The CBT-FF and PPS-FF fusion rates were 91.2% and 90.1%, respectively. The JOABPEQ category scores demonstrated therapeutic effectiveness in 74.5% and 77.1% of the patients for low back pain; the corresponding proportions for walking ability were 84.7% and 89.3%, respectively. No significant differences in therapeutic effectiveness were observed for any category, including the RMDQ and VAS scores for buttock and lower limb pain. Three patients required revision surgery for adjacent segment disease between 6 months and 3.5 years after CBT-FF (revision surgery rate, 4.4%), whereas the revision surgery rate for PPS-FF was 6.3% (9/143 cases). Average intraoperative blood loss was significantly less in the CBT-FF group than in the PPS-FF group. CONCLUSIONS Both procedures were equally useful in terms of fusion rate and clinical outcomes for DLS management.
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Affiliation(s)
- Tomohiro Miyashita
- Spine Center, Matsudo City General Hospital, 993-1 Sendabori, Matsudo, Chiba, 270-2296, Japan.
| | - Kei Kato
- Spine Center, Matsudo City General Hospital, 993-1 Sendabori, Matsudo, Chiba, 270-2296, Japan
| | - Atsushi Yunde
- Spine Center, Matsudo City General Hospital, 993-1 Sendabori, Matsudo, Chiba, 270-2296, Japan
| | - Hiromi Ataka
- Spine Center, Matsudo Orthopaedic Hospital, 1-161, Asahi-cho, Matsudo, Chiba, 271-0043, Japan
| | - Takaaki Tanno
- Spine Center, Matsudo Orthopaedic Hospital, 1-161, Asahi-cho, Matsudo, Chiba, 271-0043, Japan
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Kamiguchi N, Nakajima S, Miyashita T. FIRST TEST OF FLASH WITH CONTINUOUS LINE PROTON SCANNING. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)01594-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Miyamoto S, Iida S, Miyashita T, Katou K, Kawarai Y, Nakamura J, Orita S, Ohtori S. Mechanism of Chronic Pain of Symptomatic Hip Osteoarthritis by Association of its Distribution, Nociceptive, Neuropathic, Nociplastic, or Mixed-pain Screening, and the Prevalence of Lumbar Spinal Stenosis: A Cross-sectional Study. Clin J Pain 2021; 38:77-87. [PMID: 34803154 DOI: 10.1097/ajp.0000000000001004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 11/01/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The pain of hip osteoarthritis (OA) is generally recognized as nociceptive in origin because of the local pathology. However, some patients with OA experience a neuropathic pain component as an essential part of some nociplastic pain subtype. Here, we sought to examine the mechanism of chronic pain of symptomatic hip OA by the association of its distribution, complex pain mechanism screening, and the prevalence of lumbar spinal stenosis. MATERIALS AND METHODS We conducted a prospective cross-sectional study of 100 hips in 100 patients with symptomatic hip OA in a chronic state. We examined all baseline clinical characteristics including clinical and functional score, location of pain and numbness, and pain score (PainDETECT questionnaire and the Leeds Assessment of Neuropathic Symptoms and Signs), and magnetic resonance imaging of the hip and lumbar spine. RESULTS The PainDETECT questionnaire and Leeds Assessment of Neuropathic Symptoms and Signs revealed that 23% of the patients had a neuropathic pain component. There were 24 variations of the pain pattern. By contrast, the pain localized around the hip joint was only 15%. Pain distal to the thigh and any numbness was significantly more frequent in the group with neuropathic pain (P<0.001). Lumbar spinal stenosis grade was not significantly different between patients with nociceptive pain and those with neuropathic pain. Pain score was significantly correlated with the pain in clinical and functional scores. DISCUSSION Among patients with symptomatic hip OA, the distribution of pain was various, and about 23% of patients had neuropathic, nociplastic, or mixed pain as a possibility for somatosensory system disturbances.
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Affiliation(s)
- Shuichi Miyamoto
- Department of Orthopaedics Surgery, Matsudo City General Hospital, Matsudo City
| | - Satoshi Iida
- Department of Orthopaedics Surgery, Matsudo City General Hospital, Matsudo City
| | - Tomohiro Miyashita
- Department of Orthopaedics Surgery, Matsudo City General Hospital, Matsudo City
| | - Kei Katou
- Department of Orthopaedics Surgery, Matsudo City General Hospital, Matsudo City
| | - Yuya Kawarai
- Department of Orthopaedics Surgery, Graduate School of Medicine, Chiba University
| | - Junichi Nakamura
- Department of Orthopaedics Surgery, Graduate School of Medicine, Chiba University
| | - Sumihisa Orita
- Division of Spine Surgery, Department of Orthopaedics Surgery, Chiba University Chiba University Center for Frontier Medical Engineering (CFME), Chiba City, Chiba Prefecture, Japan
| | - Seiji Ohtori
- Department of Orthopaedics Surgery, Graduate School of Medicine, Chiba University
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Miyashita T, Ataka H, Kato K, Takaoka H, Tanno T. Good clinical outcomes in nonunion cases after facet fusion with a percutaneous pedicle screw system for degenerative lumbar spondylolisthesis. Neurosurg Rev 2021; 44:2847-2855. [PMID: 33469780 DOI: 10.1007/s10143-021-01479-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/19/2020] [Revised: 12/31/2020] [Accepted: 01/11/2021] [Indexed: 11/28/2022]
Abstract
There are many satisfactory long-term outcomes after posterolateral fusion (PLF) for degenerative lumbar spondylolisthesis (DLS); nonunion cases have also achieved good clinical outcomes. Facet fusion (FF), a minimally invasive evolution of PLF, also resulted in good clinical outcomes. We aimed to assess the course of nonunion cases after FF and determine whether the nonunion cases achieved good clinical outcomes. We retrospectively reviewed the records of 136 patients who underwent FF for DLS. Range of motion (ROM) at the fused level was measured using a flexion-extension lateral radiograph preoperatively and 1 year postoperatively. Patients were classified into the Fusion or Unconfirmed Fusion group by computed tomography (CT) 1 year postoperatively. Furthermore, patients in the Unconfirmed Fusion group were classified into the Delayed Union or Nonunion group depending on the confirmation status of FF upon the following CT. The average preoperative ROM and clinical outcomes were compared between the three groups. The Fusion, Delayed Union, and Nonunion groups had 109, 14, and 13 patients, respectively. In the Nonunion group, the average ROM significantly decreased from 13.0° preoperatively to 4.9° postoperatively. There was a significant difference in the average preoperative ROM between the groups. The larger the preoperative ROM, the fewer facets fused. There was no significant difference in clinical outcomes between the groups. Five patients (3.7%) required revision surgery for adjacent segment disease 1-5.5 years after FF. Even nonunion cases after FF achieved good clinical outcomes, likely because the unstable spondylolisthesis was stabilized. FF did not require revision surgery for nonunion itself.
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Affiliation(s)
- Tomohiro Miyashita
- Spine Center, Matsudo City General Hospital, 993-1 Sendabori, Matsudo, 270-2296, Japan.
| | - Hiromi Ataka
- Spine Center, Matsudo Orthopaedic Hospital, 1-161 Asahi-cho, Matsudo, 271-0043, Japan
| | - Kei Kato
- Spine Center, Matsudo City General Hospital, 993-1 Sendabori, Matsudo, 270-2296, Japan
| | - Hiromitsu Takaoka
- Spine Center, Matsudo Orthopaedic Hospital, 1-161 Asahi-cho, Matsudo, 271-0043, Japan
| | - Takaaki Tanno
- Spine Center, Matsudo Orthopaedic Hospital, 1-161 Asahi-cho, Matsudo, 271-0043, Japan
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Ishizaki T, Miyashita T, Inamura M, Nagashima Y, Serizawa A. Effect of Al Content in the Mg-Based Alloys on the Composition and Corrosion Resistance of Composite Hydroxide Films Formed by Steam Coating. Materials (Basel) 2019; 12:ma12071188. [PMID: 30978976 PMCID: PMC6479812 DOI: 10.3390/ma12071188] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/04/2019] [Accepted: 04/05/2019] [Indexed: 11/16/2022]
Abstract
Mg alloys are expected to be used in fields of the transportation industry because of their lightweight property, however, they show low corrosion resistance. To improve the corrosion resistance, preparation of the protective film on Mg alloys is essential. In this study, composite hydroxide films were prepared on three types of Mg alloys with different aluminum contents—that is, AZ31, AZ61, and AZ91D—by steam coating to investigate the relationship between the Mg-Al layered double hydroxide (LDH) content in the film and the Al content in the Mg alloys. Scanning electron microscopy (SEM) observation demonstrated that films were formed densely on all Mg alloy surfaces. X-ray diffraction (XRD) analyses revealed that all films prepared on AZ61 and AZ91D were composed of Mg(OH)2, AlOOH, and Mg-Al LDH, while the film containing Mg(OH)2 and Mg-Al LDH were formed only on AZ31. The Mg-Al LDH content in the film prepared on AZ61 was relatively higher than those prepared on AZ31 and AZ91D. The content of AlOOH in the film increased with an increase in the Al content in the Mg alloys. The film thickness changed depending on the treatment time and type of Mg alloy. Polarization curve measurements in 5 mass% NaCl solution demonstrated that the film prepared on the AZ61 showed complete passive behavior within the potential range of −1.0 to −0.64 V. In addition, immersion tests in 5 mass% NaCl aqueous solution for 480 h demonstrated that the film on the AZ61 had superior durability against 5 mass% NaCl aqueous solution. These results indicated that the film on the AZ61 had the most superior corrosion resistance among all samples. The results obtained in this study suggest that the LDH content in the film could be related to the corrosion resistance of the film.
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Affiliation(s)
- Takahiro Ishizaki
- Department of Materials Science and Engineering, College of Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan.
| | - Tomohiro Miyashita
- Materials Science and Engineering, Graduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo 135-8548, Japan.
| | - Momo Inamura
- Materials Science and Engineering, Graduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo 135-8548, Japan.
| | - Yuma Nagashima
- Materials Science and Engineering, Graduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo 135-8548, Japan.
| | - Ai Serizawa
- Department of Materials Science and Engineering, College of Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan.
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Miyashita T, Ataka H, Kato K, Takaoka H, Tanno T. Pedicle screw shift without loosening following instrumented posterior fusion: limitations of pedicle screw fixation. Neurosurg Rev 2018; 42:691-698. [PMID: 30187295 DOI: 10.1007/s10143-018-1030-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 07/10/2018] [Accepted: 08/28/2018] [Indexed: 10/28/2022]
Abstract
The disc angle at the fused segment is extended in operative prone position, but eventually returns to preoperative neutral position within 6 months to 1 year. This study aimed to assess pedicle screw (PS) shift without loosening to identify the mechanism of the change in disc angle after posterior fusion for degenerative lumbar spondylolisthesis (DLS). Sixty-three consecutive patients who underwent facet fusion for L4 single-level DLS were retrospectively reviewed using computed tomography (CT) immediately after surgery and 6 months postoperatively. Twenty-two patients (88 PSs) in whom the disc angle had decreased by more than 4° at 6-month postoperative radiographic follow-up were selected to more readily identify and quantify PS shift. Six patients with PS loosening and/or nonunion were excluded. We reconstructed a CT plane, vertical to the cranial endplate of the vertebrae and passing through the cannula used for percutaneous PSs. Angle α, which is formed by the cranial endplate and the cannula on this plane, was measured. A change in angle α of more than 2° between the immediate postoperative period and the 6-month follow-up was defined as a PS shift. Angle α did not change by more than 2° in any of the 44 PSs in the upper vertebrae of the fused segment. In the lower vertebrae, angle α changed by more than 2° in 22 of 44 PSs. The change in angle α in the lower vertebrae (average, 2.3°) was significantly greater than that in the upper vertebrae (average, 0.2°) (P < 0.0001). The change in the disc angle was not relevant to clinical outcomes assessed by the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire, the Roland-Morris Disability Questionnaire, and the visual analogue scale. The disc angle at the fused segment returned to preoperative neutral position due to PS shift without loosening, mainly in the lower vertebrae. PS shift is caused by bone remodeling in response to biomechanical load, similar to that in orthodontic tooth movement. As PS has limited ability to maintain a lordotic disc angle, even with the insertion of a cage, lumbar alignment will return to preoperative neutral position owing to cage subsidence or adjacent segment disease. These findings might indicate that it is not necessary to correct the spinal alignment for DLS.
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Affiliation(s)
- Tomohiro Miyashita
- Spine Center, Matsudo City General Hospital, 993-1 Sendabori, Matsudo, Chiba, 270-2296, Japan.
| | - Hiromi Ataka
- Spine Center, Matsudo Orthopaedic Hospital, 1-161 Asahi-cho, Matsudo, Chiba, 271-0043, Japan
| | - Kei Kato
- Spine Center, Matsudo City General Hospital, 993-1 Sendabori, Matsudo, Chiba, 270-2296, Japan
| | - Hiromitsu Takaoka
- Spine Center, Matsudo Orthopaedic Hospital, 1-161 Asahi-cho, Matsudo, Chiba, 271-0043, Japan
| | - Takaaki Tanno
- Spine Center, Matsudo Orthopaedic Hospital, 1-161 Asahi-cho, Matsudo, Chiba, 271-0043, Japan
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Miyashita T, Ataka H, Nakata Y, Kato K, Tanno T. Good clinical outcomes in patients with osteoporotic vertebral collapse after spinal fusion in preoperative neutral alignment fixed in the lateral decubitus position. J Orthop Sci 2017; 22:1146-1150. [PMID: 27142244 DOI: 10.1016/j.jos.2016.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 01/20/2016] [Accepted: 04/05/2016] [Indexed: 10/21/2022]
Affiliation(s)
- Tomohiro Miyashita
- Spine Center, Matsudo City Hospital, 4005 Kamihongo, Matsudo, Chiba, 271-8511, Japan.
| | - Hiromi Ataka
- Spine Center, Matsudo Orthopaedic Hospital, 1-161 Asahi-cho, Matsudo, Chiba, 271-0043, Japan
| | - Yoshinori Nakata
- Nakata Orthopaedic Clinic, 3F Nakayama Medical Square, 4-22-10 Motonakayama, Funabashi, Chiba, 273-0035, Japan
| | - Kei Kato
- Spine Center, Matsudo City Hospital, 4005 Kamihongo, Matsudo, Chiba, 271-8511, Japan
| | - Takaaki Tanno
- Spine Center, Matsudo Orthopaedic Hospital, 1-161 Asahi-cho, Matsudo, Chiba, 271-0043, Japan
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Matsui Y, Kon S, Funakoshi T, Miyashita T, Matsuda T, Iwasaki N. Increased expression of αv integrin as a regulator of fibrosis in Dupuytren's nodules. J Hand Surg Eur Vol 2017; 42:18-25. [PMID: 26969686 DOI: 10.1177/1753193416635489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
UNLABELLED Although Dupuytren's contracture is characterized by increased transforming growth factor-β1 (TGF-β1) and fibrosis in the palmar fascia, the relationship between TGF-β1 and integrins, which are considered to be related to fibrosis, remains unclear. We investigated the involvement of TGF-β1 and integrins in the pathological palmar fascia of Dupuytren's contracture. Seven patients underwent partial fasciectomy for treatment of this disease. The nodule and cord were isolated from the fascial tissues of the patients. Control fasciae were obtained from seven patients with carpal tunnel syndrome. Immunohistochemical analysis was performed to detect the fibrosis marker α-smooth muscle actin and integrins in the fascial tissues. The expression of TGF-β1 and integrins was assessed by real-time polymerase chain reaction. The results suggest that nodules may be areas involved in activation of fibrosis in the fascia, associated with increased expression of TGF-β1 and αv integrin. Thus, αv integrin may contribute to fibrosis in Dupuytren's contracture by activating TGF-β1. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Y Matsui
- 1 Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - S Kon
- 2 Department of Immunology, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - T Funakoshi
- 1 Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - T Miyashita
- 2 Department of Immunology, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - T Matsuda
- 2 Department of Immunology, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - N Iwasaki
- 1 Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Kinoshita J, Fushida S, Harada S, Oyama K, Yamaguchi T, Hirose A, Okamoto K, Nakamura K, Miyashita T, Tajima H, Takamura H, Ninomiya I, Ohta T. 14P Adipose tissue-derived stem cells provide an advantageous tumor microenvironment in gastric cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw573.013] [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: 11/12/2022] Open
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Kinoshita J, Fushida S, Harada S, Oyama K, Yamaguchi T, Hirose A, Okamoto K, Nakamura K, Miyashita T, Tajima H, Takamura H, Ninomiya, Ohta T. 14P Adipose tissue-derived stem cells provide an advantageous tumor microenvironment in gastric cancer. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00176-9] [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: 11/30/2022] Open
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Toki K, Yamaguchi Y, Miyashita T, Takaki S, Yamaguchi O, Goto T. Insertion length of airway exchange catheter during exchange of tracheal tube: a simulation study. Acta Anaesthesiol Scand 2016; 60:832-3. [PMID: 27041140 DOI: 10.1111/aas.12727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- K. Toki
- Department of Anesthesiology and Critical Care Medicine; Yokohama City University School of Medicine; Yokohama Japan
| | - Y. Yamaguchi
- Department of Anesthesiology and Critical Care Medicine; Yokohama City University School of Medicine; Yokohama Japan
| | - T. Miyashita
- Department of Anesthesiology and Critical Care Medicine; Yokohama City University School of Medicine; Yokohama Japan
| | - S. Takaki
- Department of Anesthesiology and Critical Care Medicine; Yokohama City University School of Medicine; Yokohama Japan
| | - O. Yamaguchi
- Department of Anesthesiology and Critical Care Medicine; Yokohama City University School of Medicine; Yokohama Japan
| | - T. Goto
- Department of Anesthesiology and Critical Care Medicine; Yokohama City University School of Medicine; Yokohama Japan
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Koda M, Furuya T, Kinoshita T, Miyashita T, Ota M, Maki S, Ijima Y, Saito J, Takahashi K, Yamazaki M, Aramomi M, Mannoji C. Dropped head syndrome after cervical laminoplasty: A case control study. J Clin Neurosci 2016; 32:88-90. [PMID: 27335311 DOI: 10.1016/j.jocn.2016.03.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 03/26/2016] [Indexed: 10/21/2022]
Abstract
Dropped head syndrome (DHS) is characterized by apparent neck extensor muscle weakness and difficulty extending the neck to raise the head against gravity. The aim of the present study was to elucidate possible risk factors for DHS after cervical laminoplasty. Five patients who developed DHS after cervical laminoplasty (DHS group) and twenty age-matched patients who underwent laminoplasty without DHS after surgery (control group) were compared. The surgical procedure was single-door laminoplasty with strut grafting using resected spinous processes or hydroxyapatite spacers from C3 to C6 or C7. Analyses of preoperative images including the C2-C7 angle, C7-T1 kyphosis, T1 tilt, center of gravity line from the head-C7 sagittal vertical axis (CGH-C7 SVA) were performed on lateral plain cervical spine radiographs. Preoperative T2-weighted MRI at the C5 vertebral level was used to measure the cross-sectional area of the deep extensor muscles. Widths of the lateral gutters were assessed postoperatively using CT scans of the C5 vertebral body. The average preoperative C2-C7 angle was significantly smaller in the DHS group compared with the control group. The average preoperative C7-T1 angle was significantly larger in the DHS group compared with the control group. The average preoperative CGH-C7 SVA was significantly larger in the DHS group compared with the control group. In conclusion, patients with more pronounced preoperative C2-C7 kyphosis, C7-T1 kyphosis, and CGH-C7 SVA are more likely to develop DHS following laminoplasty.
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Affiliation(s)
- Masao Koda
- Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8677, Japan.
| | - Takeo Furuya
- Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8677, Japan
| | - Tomoaki Kinoshita
- Department of Orthopedic Surgery, Narashino Dai-Ichi Hospital, Narashino, Chiba 275-0016, Japan
| | - Tomohiro Miyashita
- Department of Orthopedic Surgery, Matsudo City Hospital, Matsudo, Chiba 271-8511, Japan
| | - Mitsutoshi Ota
- Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8677, Japan
| | - Satoshi Maki
- Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8677, Japan
| | - Yasushi Ijima
- Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8677, Japan
| | - Junya Saito
- Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8677, Japan
| | - Kazuhisa Takahashi
- Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8677, Japan
| | - Masashi Yamazaki
- Department of Orthopedic Surgery, University of Tsukuba, Bunkyo, Tokyo 112-0012, Japan
| | - Masaaki Aramomi
- Department of Orthopedic Surgery, Teikyo University Chiba Medical Center, Ichihara, Chiba 299-0111, Japan
| | - Chikato Mannoji
- Department of Orthopedic Surgery, Teikyo University Chiba Medical Center, Ichihara, Chiba 299-0111, Japan
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Fushida S, Saito H, Kurata T, Kinoshita J, Oyama K, Miyashita T, Ohta T. P-034 The potential of extravasated platelet aggregation as a surrogate marker for overall survival in patients with advanced gastric cancer treated by preoperative docetaxel, cisplatin, and S-1. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.32] [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: 11/14/2022] Open
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Miyashita T, Toishi Y, Hashimoto M, Tsunoda N, Kirisawa R. Long-lasting non-primate hepacivirus infection and transmission of the virus from dams to infants in horses. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.045] [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: 10/22/2022]
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Miyashita T, Nakanuma S, Ahmed AK, Makino I, Hayashi H, Oyama K, Nakagawara H, Tajima H, Takamura H, Ninomiya I, Fushida S, Harmon JW, Ohta T. Ischemia reperfusion-facilitated sinusoidal endothelial cell injury in liver transplantation and the resulting impact of extravasated platelet aggregation. Eur Surg 2015; 48:92-98. [PMID: 27110233 PMCID: PMC4830883 DOI: 10.1007/s10353-015-0363-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 09/28/2015] [Accepted: 09/29/2015] [Indexed: 12/13/2022]
Abstract
Background The exact sequence of events leading to ultimate hepatocellular damage following ischemia/reperfusion (I/R) is incompletely understood. In this article, we review a mechanism of organ dysfunction after hepatic I/R or immunosuppressive treatment, in addition to the potential of liver sinusoidal endothelial cell (LSEC) protection and antiplatelet treatment for the suppression of hepatocellular damage. Methods A review of the literature, utilizing PubMed-NCBI, was used to provide information on the components necessary for the development of hepatocellular damage following I/R. Results It is well-established that LSECs damage following hepatic I/R or immunosuppressive treatment followed by extravasated platelet aggregation (EPA) is the root cause of organ dysfunction in liver transplantation. We have classified three phases, from LSECs damage to organ dysfunction, utilizing the predicted pathogenic mechanism of sinusoidal obstruction syndrome. The first phase is detachment of LSECs and sinusoidal wall destruction after LSECs injury by hepatic I/R or immunosuppressive treatment. The second phase is EPA, accomplished by sinusoidal wall destruction. The various growth factors, including thromboxane A2, serotonin, transforming growth factor-beta and plasminogen activator inhibitor-1, released by EPA in the Disse’s space of zone three, induce portal hypertension and the progression of hepatic fibrosis. The third phase is organ dysfunction following portal hypertension, hepatic fibrosis, and suppressed liver regeneration through various growth factors secreted by EPA. Conclusion We suggest that EPA in the space of Disse, initiated by LSECs damage due to hepatic I/R or immunosuppressive treatment, and activated platelets may primarily contribute to liver damage in liver transplantation. Endothelial protective therapy or antiplatelet treatment may be useful in the treatment of hepatic I/R following EPA.
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Affiliation(s)
- T Miyashita
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - S Nakanuma
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - A K Ahmed
- Department of Surgery, Johns Hopkins University School of Medicine, 4940 Eastern Avenue, 21224 Baltimore, MD USA
| | - I Makino
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - H Hayashi
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - K Oyama
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - H Nakagawara
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - H Tajima
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - H Takamura
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - I Ninomiya
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - S Fushida
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
| | - J W Harmon
- Department of Surgery, Johns Hopkins University School of Medicine, 4940 Eastern Avenue, 21224 Baltimore, MD USA
| | - T Ohta
- Department of Gastroenterological Surgery, Kanazawa University Hospital, 13-1 Takaramachi, 920-8641 Kanazawa, Ishikawa Japan
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Origuchi T, Arima K, Umeda M, Kawashiri SY, Koga T, Ichinose K, Tamai M, Nakamura H, Miyashita T, Fujikawa K, Mizokami A, Iwanaga N, Furuyama M, Nakashima M, Aramaki T, Ueki Y, Kawabe Y, Fukuda T, Eguchi K, Kawakami A. SAT0533 Early Diagnosis is Associated with the Less Flair in Patients with Remitting Seronegative Symmetrical Synovitis with Pitting Edema (RS3PE) Syndrome. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3827] [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: 11/03/2022]
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Kinoshita J, Fushida S, Tsukada T, Oyama K, Okamoto K, Makino I, Nakamura K, Miyashita T, Tajima H, Takamura H, Ninomiya I, Ohta T. Efficacy of conversion gastrectomy following docetaxel, cisplatin, and S-1 therapy in potentially resectable stage IV gastric cancer. Eur J Surg Oncol 2015; 41:1354-60. [PMID: 26028256 DOI: 10.1016/j.ejso.2015.04.021] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [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: 03/19/2015] [Revised: 04/21/2015] [Accepted: 04/24/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Recent advances in gastric cancer chemotherapy have made macroscopic complete resection possible in some patients with stage IV disease. METHODS We retrospectively investigated the efficacy of multimodal therapy with combined docetaxel, cisplatin, and S-1 (DCS) and conversion gastrectomy in 57 patients with stage IV gastric cancer. RESULTS Of the 57 patients, 15 patients were categorized into potentially resectable case, which is defined as patients with single incurable factor including the upper abdominal para-aortic lymph node metastasis (16a2b1 PAN metastasis) or fewer than three peripheral liver metastases. The other 42 were categorized as initially unresectable. All of patients underwent DCS therapy, and then 34 patients underwent conversion gastrectomy. The 3-year overall survival (OS) rate among the patients who underwent conversion gastrectomy was 50.1% with MST of 29.9 months. They had significantly longer OS than patients who underwent DCS therapy alone (p < 0.01). Univariate analysis among the patents with conversion gastrectomy identified 16a2b1PAN metastasis, peritoneal metastasis, potential resectable case, R0 resection as significant prognostic factors. A 3-year OS in potential resectable cases was 92.9%. Multivariate analysis identified potential resectability as the only independent prognostic factor contributing to OS (HR 0.133, 95%CI 0.024-0. 744, p = 0.021). In contrast, clinical response was selected as the only independent prognostic factor in the subgroup of initially unresectable cases (HR 0.354, 95%CI 0.151-0.783, p = 0.021). CONCLUSION Patients with potentially resectable disease had a remarkably good prognosis among stage IV gastric cancer patients, and might be ideal candidates for conversion gastrectomy following DCS therapy.
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Affiliation(s)
- J Kinoshita
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - S Fushida
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan.
| | - T Tsukada
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - K Oyama
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - K Okamoto
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - I Makino
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - K Nakamura
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - T Miyashita
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - H Tajima
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - H Takamura
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - I Ninomiya
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - T Ohta
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
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Miyashita T, Ataka H, Tanno T. Animated respiratory movement of a spinal intradural arachnoid cyst visualized by intraoperative ultrasonography. Neurosurg Rev 2014; 38:391-3; discussion 393. [PMID: 25530355 DOI: 10.1007/s10143-014-0598-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 07/11/2014] [Accepted: 09/28/2014] [Indexed: 11/25/2022]
Abstract
This study aims to describe the animated respiratory movement of a spinal intradural arachnoid cyst visualized by intraoperative ultrasonography. A 69-year-old man with a spinal arachnoid cyst of the thoracic spine presented with gait disturbance. Magnetic resonance images showed a mild anterior displacement and flattening of the spinal cord at T4-T5. We performed ultrasonography before incision of the dura during the operation and observed the movement of the cyst consisting of not only pulsation in accordance with the cardiac cycle but also rhythmic expansion and contraction in accordance with the respiratory cycle. In the inspiratory phase, the cyst gradually expanded and pulsated in accordance with the cardiac cycle. In the expiratory phase, the cyst gradually contracted with the same pulsation. After resection of the cyst, the patient's neurological improvements were excellent. To our knowledge, this is the first report of animated respiratory movement of a spinal arachnoid cyst visualized by intraoperative ultrasonography. Although cine magnetic resonance imaging can detect spinal intradural arachnoid cysts preoperatively, intraoperative ultrasonography is useful for close analysis of their movement and pathology. Considering the dynamic compression mechanism revealed in this study, we think that an early operation should be performed for such cysts.
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Affiliation(s)
- Tomohiro Miyashita
- Spine Center, Matsudo City Hospital, 4005, Kamihongo, Matsudo, 271-8511, Japan,
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Takamura H, Nakanuma S, Hayashi H, Tajima H, Kakinoki K, Kitahara M, Sakai S, Makino I, Nakagawara H, Miyashita T, Okamoto K, Nakamura K, Oyama K, Inokuchi M, Ninomiya I, Kitagawa H, Fushida S, Fujimura T, Onishi I, Kayahara M, Tani T, Arai K, Yamashita T, Yamashita T, Kitamura H, Ikeda H, Kaneko S, Nakanuma Y, Matsui O, Ohta T. Severe Veno-occlusive Disease/Sinusoidal Obstruction Syndrome After Deceased-donor and Living-donor Liver Transplantation. Transplant Proc 2014; 46:3523-35. [DOI: 10.1016/j.transproceed.2014.09.110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Accepted: 09/17/2014] [Indexed: 12/13/2022]
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20
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Fujimura T, Haba Y, Higashi Y, Yamazaki Y, Watanabe T, Okamoto K, Kinoshita J, Nakamura K, Oyama K, Miyashita T, Tajima H, Ninomiya I, Fushida S, Ohta T. PP053-MON: Bone Mineral Density and Bone Metabolism in Gastrectomized Patients with Gastric Cancer – Comparison Between Conventional and Limited Gastrectomies. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50388-3] [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: 10/24/2022]
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21
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Origuchi T, Arima K, Kawashiri SY, Tamai M, Nakamura H, Kawakami A, Tsukada T, Miyashita T, Aramaki T, Furuyama M, Kawabe Y, Iwanaga N, Ueki Y, Fukuda T, Eguchi K. OP0117 Surveillance of the Outcome of Remitting Seronegative Symmetrical Synovitis with Pitting Edema (RS3PE) Syndrome. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4160] [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: 11/04/2022]
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Ohtori S, Yamashita M, Murata Y, Eguchi Y, Aoki Y, Ataka H, Hirayama J, Ozawa T, Morinaga T, Arai H, Mimura M, Kamoda H, Orita S, Miyagi M, Miyashita T, Okamoto Y, Ishikawa T, Sameda H, Kinoshita T, Hanaoka E, Suzuki M, Suzuki M, Aihara T, Ito T, Inoue G, Yamagata M, Toyone T, Kubota G, Sakuma Y, Oikawa Y, Inage K, Sainoh T, Sato J, Yamauchi K, Takahashi K. Incidence of nocturnal leg cramps in patients with lumbar spinal stenosis before and after conservative and surgical treatment. Yonsei Med J 2014; 55:779-84. [PMID: 24719148 PMCID: PMC3990082 DOI: 10.3349/ymj.2014.55.3.779] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/03/2013] [Accepted: 10/07/2013] [Indexed: 12/03/2022] Open
Abstract
PURPOSE To examine the effects of conservative and surgical treatments for nocturnal leg cramps in patients with lumbar spinal stenosis (LSS). Nocturnal leg cramps is frequently observed in patients with peripheral neuropathy. However, there have been few reports on the relationship between nocturnal leg cramps and LSS, and it remains unknown whether conservative or surgical intervention has an impact on leg cramps in patients with LSS. MATERIALS AND METHODS The subjects were 130 LSS patients with low back and leg pain. Conservative treatment such as exercise, medication, and epidural block was used in 66 patients and surgical treatment such as decompression or decompression and fusion was performed in 64 patients. Pain scores and frequency of nocturnal leg cramps were evaluated based on self-reported questionnaires completed before and 3 months after treatment. RESULTS The severity of low back and leg pain was higher and the incidence of nocturnal leg cramps was significantly higher before treatment in the surgically treated group compared with the conservatively treated group. Pain scores improved in both groups after the intervention. The incidence of nocturnal leg cramps was significantly improved by surgical treatment (p=0.027), but not by conservative treatment (p=0.122). CONCLUSION The findings of this prospective study indicate that the prevalence of nocturnal leg cramps is associated with LSS and severity of symptoms. Pain symptoms were improved by conservative or surgical treatment, but only surgery improved nocturnal leg cramps in patients with LSS. Thus, these results indicate that the prevalence of nocturnal leg cramps is associated with spinal nerve compression by LSS.
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Affiliation(s)
- Seiji Ohtori
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masaomi Yamashita
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yasuaki Murata
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yawara Eguchi
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yasuchika Aoki
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiromi Ataka
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Jiro Hirayama
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tomoyuki Ozawa
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tatsuo Morinaga
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hajime Arai
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masaya Mimura
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroto Kamoda
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Sumihisa Orita
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masayuki Miyagi
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tomohiro Miyashita
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yuzuru Okamoto
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tetsuhiro Ishikawa
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroaki Sameda
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tomoaki Kinoshita
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Eiji Hanaoka
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Miyako Suzuki
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Munetaka Suzuki
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takato Aihara
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Toshinori Ito
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Gen Inoue
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masatsune Yamagata
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tomoaki Toyone
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Gou Kubota
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoshihiro Sakuma
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yasuhiro Oikawa
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kazuhide Inage
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takeshi Sainoh
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Jun Sato
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kazuyo Yamauchi
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kazuhisa Takahashi
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
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Miyashita T, Ryu J, Saito S, Sakamoto A. Effects of growth factors and cytokines on proteoglycan and collagen synthesis by chondrocytes in guinea pigs with spontaneous osteoarthritis. Mod Rheumatol 2014; 10:45-50. [DOI: 10.3109/s101650070038] [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: 11/13/2022]
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Honda Y, Watanabe T, Tamura H, Nishiyama S, Takahashi H, Arimoto T, Shishido T, Miyashita T, Miyamoto T, Kubota I. Elevated Cardio-Ankle Vascular Index (CAVI) predicts severe sleep disordered breathing in non-overweight patients with chronic heart failure. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hasegawa H, Kato S, Watanabe T, Takahashi H, Arimoto T, Shishido T, Miyashita T, Miyamoto T, Shibata Y, Kubota I. The role of macrophage transcriptional factor MafB in atherosclerotic plaque stability. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Otaki Y, Watanabe T, Takahashi H, Tamura H, Nishiyama S, Arimoto T, Miyashita T, Shishido T, Miyamoto T, Kubota I. Plasma thioredoxin-1 level is associated with renal tubular damage and predicts poor prognosis in patients with chronic heart failure. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nishiyama S, Watanabe T, Wanezaki M, Hirayama A, Arimoto T, Takahashi H, Shishido T, Miyashita T, Miyamoto T, Kubota I. Prevalence of percutaneous coronary intervention is a key to reduce a higher early mortality in female patients with acute myocardial infarction: the Yamagata AMI registry. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ohtori S, Yamashita M, Murata Y, Eguchi Y, Aoki Y, Ataka H, Hirayama J, Ozawa T, Morinaga T, Arai H, Mimura M, Kamoda H, Orita S, Miyagi M, Miyashita T, Okamoto Y, Ishikawa T, Sameda H, Kinoshita T, Hanaoka E, Suzuki M, Suzuki M, Aihara T, Ito T, Inoue G, Yamagata M, Toyone T, Kubota G, Sakuma Y, Oikawa Y, Inage K, Sainoh T, Yamauchi K, Takahashi K. Conservative and surgical treatment improves pain and ankle-brachial index in patients with lumbar spinal stenosis. Yonsei Med J 2013; 54:999-1005. [PMID: 23709437 PMCID: PMC3663234 DOI: 10.3349/ymj.2013.54.4.999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
PURPOSE The pathological mechanism of lumbar spinal stenosis is reduced blood flow in nerve roots and degeneration of nerve roots. Exercise and prostaglandin E1 is used for patients with peripheral arterial disease to increase capillary flow around the main artery and improve symptoms; however, the ankle-brachial index (ABI), an estimation of blood flow in the main artery in the leg, does not change after treatment. Lumbar spinal nerve roots contain somatosensory, somatomotor, and unmyelinated autonomic nerves. Improved blood flow by medication with prostaglandin E1 and decompression surgery in these spinal nerve roots may improve the function of nerve fibers innervating muscle, capillary, and main vessels in the lower leg, resulting in an increased ABI. The purpose of the study was to examine whether these treatments can improve ABI. MATERIALS AND METHODS One hundred and seven patients who received conservative treatment such as exercise and medication (n=56) or surgical treatment (n=51) were included. Low back pain and leg pain scores, walking distance, and ABI were measured before treatment and after 3 months of conservative treatment alone or surgical treatment followed by conservative treatment. RESULTS Low back pain, leg pain, and walking distance significantly improved after both treatments (p<0.05). ABI significantly increased in each group (p<0.05). CONCLUSION This is the first investigation of changes in ABI after treatment in patients with lumbar spinal stenosis. Improvement of the spinal nerve roots by medication and decompression surgery may improve the supply of blood flow to the lower leg in patients with lumbar spinal stenosis.
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Affiliation(s)
- Seiji Ohtori
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
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Hirayama H, Sugawara Y, Miyashita Y, Mitsuishi M, Miyashita T. Direct observation of back energy transfer in blue phosphorescent materials for organic light emitting diodes by time-resolved optical waveguide spectroscopy. Appl Phys Lett 2013; 102:81124. [PMID: 23526833 PMCID: PMC3598733 DOI: 10.1063/1.4792838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 02/06/2013] [Indexed: 06/02/2023]
Abstract
We demonstrate a high-sensitive transient absorption technique for detection of excited states in an organic thin film by time-resolved optical waveguide spectroscopy. By using a laser beam as a probe light, we detect small change in the transient absorbance which is equivalent to 10-7 absorbance unit in a conventional method. This technique was applied to organic thin films of blue phosphorescent materials for organic light emitting diodes. We directly observed the back energy transfer from emitting guest molecules to conductive host molecules.
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Affiliation(s)
- H Hirayama
- Analysis Technology Center, Fujifilm Corporation, 210, Nakanuma, Minamiashigara, Kanagawa, Japan
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Hirano Y, Masuda T, Naganos S, Matsuno M, Ueno K, Miyashita T, Horiuchi J, Saitoe M. Fasting Launches CRTC to Facilitate Long-Term Memory Formation in Drosophila. Science 2013; 339:443-6. [DOI: 10.1126/science.1227170] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Kadota R, Koda M, Kawabe J, Hashimoto M, Nishio Y, Mannoji C, Miyashita T, Furuya T, Okawa A, Takahashi K, Yamazaki M. Granulocyte colony-stimulating factor (G-CSF) protects oligodendrocyte and promotes hindlimb functional recovery after spinal cord injury in rats. PLoS One 2012; 7:e50391. [PMID: 23209732 PMCID: PMC3507692 DOI: 10.1371/journal.pone.0050391] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Accepted: 10/24/2012] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Granulocyte colony-stimulating factor (G-CSF) is a protein that stimulates differentiation, proliferation, and survival of cells in the granulocytic lineage. Recently, a neuroprotective effect of G-CSF was reported in a model of cerebral infarction and we previously reported the same effect in studies of murine spinal cord injury (SCI). The aim of the present study was to elucidate the potential therapeutic effect of G-CSF for SCI in rats. METHODS Adult female Sprague-Dawley rats were used in the present study. Contusive SCI was introduced using the Infinite Horizon Impactor (magnitude: 200 kilodyne). Recombinant human G-CSF (15.0 µg/kg) was administered by tail vein injection at 1 h after surgery and daily the next four days. The vehicle control rats received equal volumes of normal saline at the same time points. RESULTS Using a contusive SCI model to examine the neuroprotective potential of G-CSF, we found that G-CSF suppressed the expression of pro-inflammatory cytokine (IL-1 beta and TNF- alpha) in mRNA and protein levels. Histological assessment with luxol fast blue staining revealed that the area of white matter spared in the injured spinal cord was significantly larger in G-CSF-treated rats. Immunohistochemical analysis showed that G-CSF promoted up-regulation of anti-apoptotic protein Bcl-Xl on oligpodendrocytes and suppressed apoptosis of oligodendrocytes after SCI. Moreover, administration of G-CSF promoted better functional recovery of hind limbs. CONCLUSIONS G-CSF protects oligodendrocyte from SCI-induced cell death via the suppression of inflammatory cytokines and up-regulation of anti-apoptotic protein. As a result, G-CSF attenuates white matter loss and promotes hindlimb functional recovery.
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Affiliation(s)
- Ryo Kadota
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chuo-Ku, Chiba, Japan
| | - Masao Koda
- Department of Orthopaedic Surgery, Chiba Aoba Municipal Hospital, Chuo-Ku, Chiba, Japan
- * E-mail:
| | - Junko Kawabe
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chuo-Ku, Chiba, Japan
| | - Masayuki Hashimoto
- Department of Orthopaedic Surgery, Chiba Medical Center, Chuo-Ku, Chiba, Japan
| | - Yutaka Nishio
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chuo-Ku, Chiba, Japan
| | - Chikato Mannoji
- Department of Orthopaedic Surgery, Chiba Aoba Municipal Hospital, Chuo-Ku, Chiba, Japan
| | - Tomohiro Miyashita
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chuo-Ku, Chiba, Japan
| | - Takeo Furuya
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chuo-Ku, Chiba, Japan
| | - Akihiko Okawa
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chuo-Ku, Chiba, Japan
| | - Kazuhisa Takahashi
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chuo-Ku, Chiba, Japan
| | - Masashi Yamazaki
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chuo-Ku, Chiba, Japan
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Kutsuzawa D, Arimoto T, Shishido T, Sasaki S, Iwayama T, Ishigaki D, Takahashi H, Miyashita T, Miyamoto T, Nitobe J, Watanabe T, Kubota I. Device troubleshooting: cross connection of ventricular leads in a patient with decreased right ventricular electrical activity. Europace 2012; 14:1217-9. [DOI: 10.1093/europace/eur420] [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: 11/14/2022] Open
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Miyashita T, Yamazaki M, Okawa A, Yoneda M, Aiba A, Koda M, Takahashi K. Multiple neck operations in a patient with severe motor tics because of Tourette's syndrome: a case report. J Med Case Rep 2012; 6:223. [PMID: 22846593 PMCID: PMC3443656 DOI: 10.1186/1752-1947-6-223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Accepted: 03/27/2012] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION In patients with Tourette's syndrome who have severe motor tics, involuntary neck movements can enhance degenerative changes in the cervical spine, occasionally causing myelopathy. There have been a limited number of reports on surgical treatment for cervical myelopathy caused by Tourette's syndrome, and a consensus for surgical treatment has not been fully established. To the best of our knowledge, this is the first report that describes a case of cervical myelopathy in a patient with Tourette's syndrome with severe motor tics who has undergone multiple surgeries of the cervical spine. CASE PRESENTATION A 44-year-old Asian man with severe motor tics due to Tourette's syndrome presented with cervical myelopathy. Previously, he had undergone an anterior discectomy and spinal fusion with ceramics at the C3-C4 and C5-C6 levels, but required further surgery because of displacement of the ceramics. After the second operation, he developed compression myelopathy at the sandwiched (C4-C5) disc level, and had to undergo a C4-C5 anterior discectomy and spinal fusion, which was unsuccessful.As a salvage operation, we performed a C3-C7 decompression and spinal fusion from both the anterior and posterior approaches. By thorough postoperative external immobilization of his neck, our patient's spinal fusion was successful and his neurological improvements were maintained for more than 10 years. CONCLUSIONS Patients with Tourette's syndrome with cervical myelopathy are at risk of having multiple neck operations to correct their symptoms. Postoperative immobilization and the correct selection of surgical procedure are quite important for successful spinal fusion and for avoiding complications at adjacent levels in these patients.
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Affiliation(s)
- Tomohiro Miyashita
- Spine Section, Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
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Hirano Y, Kuriyama Y, Miyashita T, Horiuchi J, Saitoe M. Reactive oxygen species are not involved in the onset of age-related memory impairment in Drosophila. Genes Brain Behav 2011; 11:79-86. [PMID: 22107594 DOI: 10.1111/j.1601-183x.2011.00748.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Damage from reactive oxygen species (ROS) is thought to be a cause of organismal aging. Reactive oxygen species have also been proposed to be responsible for several age-associated phenotypes, including age-related memory impairment (AMI). However, it has not previously been tested whether increasing ROS affects AMI onset. Here we examined the effects of feeding hydrogen peroxide, and the ROS-generating agent, paraquat, on olfactory aversive memory in Drosophila at young ages and during AMI onset. Reactive oxygen species feeding greatly reduced fly survival, and increased oxidized proteins and transcripts of an antioxidant enzyme, catalase (Cat) and a stress-responsive chaperone, heat-shock protein 22 (Hsp22) in fly heads. However, feeding did not impair memory in young wild-type flies, nor did it exacerbate the memory deficits in flies at the onset of AMI. Strikingly ROS feeding did disrupt memory at young ages and accelerated AMI onset was observed when expression of genes involved in the defense system to ROS, including antioxidant enzymes and Hsp22, was reduced in the mushroom bodies, neural centers required for olfactory memory. These results implicate that although ROS production increases upon aging, neuronal functions required for memory processes are sufficiently protected by the defense system to ROS even at the age of AMI onset. Thus we propose that ROS production does not affect AMI onset in Drosophila.
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Affiliation(s)
- Y Hirano
- Department of Sensory and Motor Systems, Tokyo Metropolitan Institute of Medical Science, Setagaya, Tokyo, Japan
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Araki Y, Tsukamoto K, Takagi R, Miyashita T, Oyabu N, Kobayashi K, Yamada H. In situinvestigation of aragonite formation in atomic resolution by FM-AFM. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311086314] [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: 11/10/2022] Open
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Migita K, Agematsu K, Yamazaki K, Suzuki A, Yazaki M, Jiuchi Y, Miyashita T, Izumi Y, Koga T, Kawakami A, Eguchi K. Expression of CD64 on polymorphonuclear neutrophils in patients with familial Mediterranean fever. Clin Exp Immunol 2011; 164:365-72. [PMID: 21438869 DOI: 10.1111/j.1365-2249.2011.04380.x] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Familial Mediterranean fever (FMF) is an autoinflammatory disease characterized by recurrent episodes of fever and serosal or synovial inflammation. We examined the utility of CD64 (FcγRI) expression in polymorphonuclear neutrophils (PMNs) as clinical and biological parameters in patients with FMF. We studied 12 Japanese FMF patients (mean age; 22·8 ± 15·5 years, male/female: 2/10), along with rheumatoid arthritis patients (RA, n = 38 male/female: 6/32, mean age; 52·2 ± 15·3 years), systemic lupus erythematosus (SLE, n = 15 male/female: 0/15, mean age; 38·5 ± 15·9 years) and 12 healthy subjects (male/female: 3/9, mean age; 37·9 ± 17·2 years). CD64 expression on PMNs was determined using flow cytometry. The quantitative expression of CD64 in patients with FMF (2439·6 ± 2215·8 molecules per PMN) was significantly higher than in healthy subjects (547·8 ± 229·5, P = 0·003) or in patients with RA (606·5 ± 228·2, P < 0·0001) and SLE (681·3 ± 281·1, P = 0·004). The increased CD64 expression on PMNs isolated from untreated FMF patients was down-regulated by colchicine treatment. NACHT-LRR-PYD-containing protein 3 (NLRP3) activation using MurNAc-L-Ala-D-isoGln (MDP) resulted in increased CD64 expression on PMNs from healthy subjects. Our results suggest that quantitative measurement of CD64 expression on PMNs can be a valuable tool to discriminate between FMF and autoimmune diseases.
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Affiliation(s)
- K Migita
- Clinical Research Center, Nagasaki Medical Center, Omura, Japan.
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Nagao K, Fujii K, Saito K, Sugita K, Endo M, Motojima T, Hatsuse H, Miyashita T. Entire PTCH1 deletion is a common event in point mutation-negative cases with nevoid basal cell carcinoma syndrome in Japan. Clin Genet 2011; 79:196-8. [DOI: 10.1111/j.1399-0004.2010.01527.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Ogata K, Kandori A, Miyashita T, Sekihara K, Tsukada K. A comparison of two-dimensional techniques for converting magnetocardiogram maps into effective current source distributions. Rev Sci Instrum 2011; 82:014302. [PMID: 21280846 DOI: 10.1063/1.3529440] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The aim of this study was to develop a method for converting the pseudo two-dimensional current given by a current-arrow map (CAM) into the physical current. The physical current distribution is obtained by the optimal solution in a least mean square sense with Tikhonov regularization (LMSTR). In the current dipole simulation, the current pattern differences (ΔJ) between the results of the CAM and the LMSTR with several regularization parameters (α = 10(-1)-10(-15)) are calculated. In magnetocardiographic (MCG) analysis, the depth (z(d)) of a reconstruction plane is chosen by using the coordinates of the sinus node, which is estimated from MCG signals at the early p-wave. The ΔJs at p-wave peaks, QRS-complex peaks, and T-wave peaks of MCG signals for healthy subjects are calculated. Furthermore, correlation coefficients and regression lines are also calculated from the current values of the CAM and the LMSTR during p-waves, QRS-complex, and T-waves of MCG signals. In the simulation, the ΔJs (α ≈ 10(-10)) had a minimal value. The ΔJs (α = 10(-10)) at p-wave peaks, QRS-complex peaks, and T-wave peaks of MCG signals for healthy subjects also had minimal value. The correlation coefficients of the current values given by the CAM and the LMSTR (α = 10(-10)) were greater than 0.9. Furthermore, slopes (y) of the regression lines are correlated with the depth (z(d)) (r = -0.93). Consequently, the CAM value can be transformed into the LMSTR current value by multiplying it by the slope (y) obtained from the depth (z(d)). In conclusion, the result given by the CAM can be converted into an effective physical current distribution by using the depth (z(d)).
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Affiliation(s)
- K Ogata
- Advanced Research Laboratory, Hitachi Ltd., Higashi-Koigakubo, Kokubunji, Tokyo, Japan.
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Miyashita T, Koda M, Kitajo K, Yamazaki M, Takahashi K, Kikuchi A, Yamashita T. Wnt-Ryk signaling mediates axon growth inhibition and limits functional recovery after spinal cord injury. J Neurotrauma 2010; 26:955-64. [PMID: 19473059 DOI: 10.1089/neu.2008.0776] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Wnt proteins are a large family of diffusible factors that play important roles in embryonic development, including axis patterning, cell fate specification, proliferation, and axon development. It was recently demonstrated that Ryk (receptor related to tyrosine kinase) is a conserved high-affinity Wnt receptor, and that Ryk-Wnt interactions guide corticospinal axons down the spinal cord during development. Here, we report that the Ryk-Wnt signal mediates the inhibition of corticospinal axon growth in the adult spinal cord. The expression of Wnt-5a is induced in reactive astrocytes around the injury site following a spinal cord injury. In vitro, Wnt-5a inhibits the neurite growth of postnatal cerebellar neurons by activating RhoA/Rho-kinase. In rats with thoracic spinal cord contusion, intrathecal administration of a neutralizing antibody to Ryk resulted in significant axonal growth of the corticospinal tract and enhanced functional recovery. Thus, reexpression of the embryonic repulsive cues in adult tissues contributes to the failure of axon regeneration in the central nervous system.
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Affiliation(s)
- Tomohiro Miyashita
- Department of Neurobiology, Graduate School of Medicine, Chiba University, Chiba, Japan
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Migita K, Koga T, Torigoshi T, Motokawa S, Maeda Y, Jiuchi Y, Izumi Y, Miyashita T, Nakamura M, Komori A, Ishibashi H. Induction of interleukin-23 p19 by serum amyloid A (SAA) in rheumatoid synoviocytes. Clin Exp Immunol 2010; 162:244-50. [PMID: 20840651 DOI: 10.1111/j.1365-2249.2010.04242.x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In this study, we investigated the roles of serum amyloid A (SAA) in T helper 17 (Th17)-related cytokine induction in rheumatoid arthritis (RA) synoviocytes. Synoviocytes isolated from rheumatoid arthritis (RA) patients were stimulated with recombinant SAA and IL-23 expression was investigated using reverse transcriptase-polymerase chain reaction and Western blot. The involvement of mitogen-activated protein kineases (MAPKs) and nuclear factor (NF)-κB in SAA-induced interleukin (IL)-23 p19 expression was investigated using pharmacological inhibitors. In RA synoviocytes, SAA induced the expression of IL-23 p19 and p40 mRNA expression. The SAA-stimulated expression of p19 was rapid (< 3 h), and insensitive to polymyxin B treatment. This SAA-stimulated expression of IL-23 p19 was inhibited completely by inhibitors of NF-κB, p38MAPK and dexamethasone. Interestingly, the SAA-induced IL-23, p19 and p40 production was accompanied by enhanced expression of IL-1β, but not transforming growth factor-β. These results indicate that SAA is a significant inducer of IL-23 and IL-1β in RA synoviocytes and potentially activates the IL-23/IL-17 pathway in the RA synovium. Our data present a novel interaction between inflammation and autoimmunity by an acute-phase protein.
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Affiliation(s)
- K Migita
- Department of Rheumatology, NHO Nagasaki Medical Center, Kubara, Omura, Japan.
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Yoshimura M, Makiyama J, Koga T, Miyashita T, Izumi Y, Torigoshi T, Motokawa S, Eguchi K, Migita K. Successful treatment with tocilizumab in a patient with refractory adult-onset Still's disease (AOSD). Clin Exp Rheumatol 2010; 28:141-142. [PMID: 20346255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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Suzuki S, Miyashita T, Kimura H, Nishikita S. Measurement of Opening Displacement of Single and Bifurcated Notches by Moiré Interferometry. EPJ Web of Conferences 2010. [DOI: 10.1051/epjconf/20100642004] [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: 11/14/2022] Open
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Yamazaki M, Okawa A, Kadota R, Mannoji C, Miyashita T, Koda M. Surgical simulation of circumferential osteotomy and correction of cervico-thoracic kyphoscoliosis for an irreducible old C6-C7 fracture dislocation. Acta Neurochir (Wien) 2009; 151:867-72. [PMID: 19468674 DOI: 10.1007/s00701-009-0388-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2007] [Accepted: 08/11/2008] [Indexed: 10/20/2022]
Abstract
BACKGROUND Many different surgical procedures have been employed in the treatment of fracture dislocation at the middle to lower cervical spine. However, consistent protocols and procedures have not been fully established for the surgical correction of an irreducible old cervical fracture dislocation associated with spinal deformity. METHODS We report a case of irreducible cervical fracture dislocation and kyphoscoliosis, in which surgical simulation using a three-dimensional full-scale model was useful for circumferential corrective osteotomy at the C6-C7 level. A 56-year-old man was diagnosed with an irreducible fracture dislocation at the C6-C7 level 2 months after a motor vehicle accident. He showed torticollis, and complained of severe pain in his neck and left upper arm. Radiographic examinations revealed that the C6 vertebra was translated anteriorly and laterally to the C7 vertebra. A bony union had progressed at the fracture site, showing rigid cervico-thoracic kyphoscoliosis. To assist in the preoperative planning, we created a three-dimensional, full-scale model from the patient's computed tomography data. Using the model, we performed a simulation of the planned circumferential corrective osteotomy at the C6-C7 level. RESULTS Through the simulation, we could evaluate the deformed bony structures around the vertebral arteries at the C6-C7 level accurately. At the time of the actual surgery, corrective osteotomy combined with spinal fusion (C5-T2) with a pedicle screw-rod system was accomplished successfully without any neurovascular complications. After surgery, the patient experienced relief from pain, and his neck posture became normal. CONCLUSIONS Surgical simulation using a three-dimensional, full-scale model was useful for improving the accuracy and safety of circumferential corrective osteotomy of the cervical spine.
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Torigoshi T, Motokawa S, Miyashita T, Maeda Y, Koga T, Nakamura M, Komori A, Aiba Y, Uemura T, Yatsuhashi H, Ishibashi H, Eguchi K, Shindo H, Migita K. Potentiation of glucocorticoid receptor (GR)-mediated signaling by the immunosuppressant tacrolimus in rheumatoid synoviocytes. Clin Exp Rheumatol 2009; 27:246-252. [PMID: 19473564] [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: 05/27/2023]
Abstract
OBJECTIVE The immunosuppressant tacrolimus is known to enhance many aspects of glucocorticoid. In this study, we investigated the effects of tacrolimus on glucocorticoid receptor (GR) signaling using rheumatoid fibroblast-like synoviocytes (RA-FLS). METHODS The nuclear translocation of GR was analyzed by immunocytochemistry. The DNA binding activity of p65 was assayed by a functional ELISA kit using nuclear extracts. GR-associated FK506-binding protein-51 (FKBP-51) was analyzed by Western blotting following immunoprecipitation of glucocorticoid receptor (GR) complexes. RESULTS High concentrations (10-7M) of Dexamethasone (Dex) induced GR translocation to the nucleus in RA-FLS. However, the nuclear GR translocation did not occur with low concentrations of Dex (10-9M). Tacrolimus treatment of RA-FLS results in potentiation of GR translocation to the nucleus even in the presence of a low concentration of Dex (10-9M). GR-associated FKBP-51 decreased after tacrolimus treatment. Furthermore, tacrolimus also decreased the IL-1Beta-induced DNA binding activity of p65, a subunit of NF-KappaB, in the presence of 10-9 M of Dex. CONCLUSION These data suggest that tacrolimus exerts anti-inflammatory properties by potentiating the GR signaling through the GR-immunosuppressant-binding proteins (immunophilins) interaction and its nuclear transport in rheumatoid synovium.
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Affiliation(s)
- T Torigoshi
- Clinical Research Center and Department of Rheumatology, NHO Nagasaki Medical Center, Nagasaki, Japan
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Someya Y, Koda M, Dezawa M, Kadota T, Hashimoto M, Kamada T, Nishio Y, Kadota R, Mannoji C, Miyashita T, Okawa A, Yoshinaga K, Yamazaki M. Reduction of cystic cavity, promotion of axonal regeneration and sparing, and functional recovery with transplanted bone marrow stromal cell–derived Schwann cells after contusion injury to the adult rat spinal cord. J Neurosurg Spine 2008; 9:600-10. [DOI: 10.3171/spi.2008.9.08135] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Object
The authors previously reported that Schwann cells (SCs) could be derived from bone marrow stromal cells (BMSCs) in vitro and that they promoted axonal regeneration of completely transected rat spinal cords in vivo. The aim of the present study is to evaluate the efficacy of transplanted BMSC-derived SCs (BMSC-SCs) in a rat model of spinal cord contusion, which is relevant to clinical spinal cord injury.
Methods
Bone marrow stromal cells were cultured as plastic-adherent cells from the bone marrow of GFPtransgenic rats. The BMSC-SCs were derived from BMSCs in vitro with sequential treatment using beta-mercaptoethanol, all-trans-retinoic acid, forskolin, basic fibroblast growth factor, platelet derived–growth factor, and heregulin. Schwann cells were cultured from the sciatic nerve of neonatal, GFP-transgenic rats. Immunocytochemical analysis and the reverse transcriptase–polymerase chain reaction were performed to characterize the BMSC-SCs. For transplantation, contusions with the New York University impactor were delivered at T-9 in 10- to 11-week-old male Wistar rats. Four groups of rats received injections at the injury site 7 days postinjury: the first received BMSCSCs and matrigel, a second received peripheral SCs and matrigel, a third group received BMSCs and matrigel, and a fourth group received matrigel alone. Histological and immunohistochemical studies, electron microscopy, and functional assessments were performed to evaluate the therapeutic effects of BMSC-SC transplantation.
Results
Immunohistochemical analysis and reverse transcriptase–polymerase chain reaction revealed that BMSC-SCs have characteristics similar to SCs not only in their morphological characteristics but also in their immunocytochemical phenotype and genotype. Histological examination revealed that the area of the cystic cavity was significantly reduced in the BMSC-SC and SC groups compared with the control rats. Immunohistochemical analysis showed that transplanted BMSCs, BMSC-SCs, and SCs all maintained their original phenotypes. The BMSC-SC and SC groups had a larger number of tyrosine hydroxilase–positive fibers than the control group, and the BMSC-SC group had more serotonin-positive fibers than the BMSC or control group. The BMSC-SC group showed significantly better hindlimb functional recovery than in the BMSC and control group. Electron microscopy revealed that transplanted BMSC-SCs existed in association with the host axons.
Conclusions
Based on their findings, the authors concluded that BMSC-SC transplantation reduces the size of the cystic cavity, promotes axonal regeneration and sparing, results in hindlimb functional recovery, and can be a useful tool for spinal cord injury as a substitute for SCs.
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Affiliation(s)
| | - Masao Koda
- 3Department of Orthopaedic Surgery, Prefectural Togane Hospital, Chiba
| | - Mari Dezawa
- 4Department of Anatomy and Neurobiology, Kyoto University Graduate School of Medicine, Kyoto; and
| | - Tomoko Kadota
- 2Bioenvironmental Medicine, Chiba University Graduate School of Medicine, Chiba
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Yamazaki M, Okawa A, Mannoji C, Kadota R, Miyashita T, Koda M. C1 dome-like laminotomy and posterior C1-C2 polyaxial screw-rod fixation for a patient with cervical myelopathy due to a retro-odontoid pseudotumor. J Clin Neurosci 2008; 16:99-103. [PMID: 19010681 DOI: 10.1016/j.jocn.2008.01.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2007] [Revised: 01/18/2008] [Accepted: 01/21/2008] [Indexed: 10/21/2022]
Abstract
A 49-year-old man presented with progressive cervical myelopathy caused by a retro-odontoid mass, with associated developmental canal stenosis at C1, and C1-C2 instability. Surgery was scheduled for a dome-like laminotomy at C1, posterior C1-C2 fixation using C1 lateral mass screws and C2 pedicle screws, and structural bone grafting between C1 and C2. Prior to surgery, we produced a 3-dimensional full-scale model of the patient's cervical spine and performed a simulation of the scheduled surgery. Through the simulation, we accurately evaluated the laminotomy sites and the screw insertion points. During the actual surgery, all procedures were successful. After surgery, the patient's neurological deficits markedly improved. Successful C1-C2 fusion, adequate decompression of the spinal cord, and spontaneous regression of the retro-odontoid mass were achieved by this procedure without any apparent restriction in neck movement.
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Affiliation(s)
- Masashi Yamazaki
- Spine Section, Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chiba 260-8677, Japan.
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Migita K, Nakamura T, Maeda Y, Miyashita T, Koga T, Tanaka M, Nakamura M, Komori A, Ishibashi H, Origuchi T, Ida H, Kawasaki E, Yasunami M, Eguchi K. MEFV mutations in Japanese rheumatoid arthritis patients. Clin Exp Rheumatol 2008; 26:1091-1094. [PMID: 19210876] [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: 05/27/2023]
Abstract
OBJECTIVE Familiar Mediterranean Fever (FMF) is common among Mediterranean populations, while other populations are rarely affected. The aim of this study was to assess the involvement of MEFV gene mutations among Japanese rheumatoid arthritis patients with or without amyloid A (AA) amyloidosis. METHODS The frequency of the MEFV mutations, which were identified in Japanese FMF patients, was determined in 126 Japanese RA patients and 76 Japanese healthy subjects. RESULTS The M694I mutation was not observed among RA patients and healthy subjects. Allele frequency of R408Q, P369S, E148Q, L110P mutations account respectively for 3.3%, 3.9%, 23.7%, 9.2% in healthy subjects and 5.6%, 6.7%, 24.2%, 9.5% in RA patients. The overall mutation rate was comparable between the RA patients and healthy subjects, as well as between the RA patients with and without amyloidosis. CONCLUSION This study shows the high prevalence of mutations of the MEFV genes in Japanese RA patients. However, our data suggest that the MEFV gene mutations may not be a genetic factor affecting the susceptibility of RA or the development of amyloidosis in a Japanese population.
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Affiliation(s)
- K Migita
- Clinical Research Center, NHO Nagasaki Medical Center Omura, Japan
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Koda M, Someya Y, Nishio Y, Kadota R, Mannoji C, Miyashita T, Okawa A, Murata A, Yamazaki M. Brain-derived neurotrophic factor suppresses anoikis-induced death of Schwann cells. Neurosci Lett 2008; 444:143-7. [DOI: 10.1016/j.neulet.2008.07.055] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2007] [Revised: 06/22/2008] [Accepted: 07/21/2008] [Indexed: 01/01/2023]
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Sasaki R, Watanabe Y, Saito K, Fujii K, Ando T, Takayama Y, Miyashita T, Akizuki T. P.020 NBCCS with mutation of the PTCH gene. J Craniomaxillofac Surg 2008. [DOI: 10.1016/s1010-5182(08)71809-2] [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: 10/21/2022] Open
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