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Abstract
This study aims to clarify the ideal technique for running on a curved path during sprinting events. Participants were twelve male track and field athletes including long jumpers and sprinters. The participants performed a 60-m sprint with maximal effort on straight and curved paths. Participants were divided into "good curve runners" and "poor curve runners" according to the curved path running speed relative to that of the straight path. Kinematic variables and ground reaction forces (GRFs) were registered and compared between the groups and paths. The running speed, step length, and flight distance of the outside leg on the curved path were lower than on the straight path only in poor curve runners. The medial-lateral GRF and impulse showed an increase during curved path running for both groups. However, the maximum posterior GRF and impulse decreased only in poor curve runners. The ideal technique for running on a curved path is to maintain the same kinematics and kinetics in the sagittal plane as on a straight path.
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Affiliation(s)
- Hayato Ohnuma
- Department of Sports Science, Japan Institute of Sports Science, Tokyo, Japan
- Hayato Ohnuma, Ph.D Japan Institute of Sports Science Department of Sports Science 3-15-1, Nishigaoka, Kita-ku, Tokyo, Japan, 115-0056 Phone number: 81-3-5963-0200 Fax number: 81-3-5963-0244
| | - Masanobu Tachi
- Faculty of Education, Nara University of Education, Nara, Japan
| | - Akihito Kumano
- School of Physical Education, Tokai University, Hiratsuka, Japan
| | - Yuichi Hirano
- Faculty of Sports and Health Studies, Hosei University, Machida, Japan
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2
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Malone M, Bjarnsholt T, McBain A, James G, Stoodley P, Leaper D, Tachi M, Schultz G, Swanson T, Wolcott R. The prevalence of biofilms in chronic wounds: a systematic review and meta-analysis of published data. J Wound Care 2017; 26:20-25. [DOI: 10.12968/jowc.2017.26.1.20] [Citation(s) in RCA: 255] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- M. Malone
- Head of Department, Podiatric Medicine, Global Wound Biofilm Expert Panel; Liverpool Hospital, South West Sydney LHD, Australia; and Ingham Institute of Applied Medical Research, Sydney, Australia
| | - T. Bjarnsholt
- University of Copenhagen, Costerton Biofilm Center, Denmark; and Department of Clinical Microbiology, Rigshospitalet, Denmark
| | - A.J. McBain
- Faculty of Biology, Medicine and Health, University of Manchester
| | - G.A. James
- Center for Biofilm Engineering, Montana State University, US
| | - P. Stoodley
- Center for Microbial Interface Biology and Department of Microbial infection, Immunity and Orthopaedics, Ohio State University, US
| | - D. Leaper
- Institute of Skin Integrity and Infection Prevention, University of Huddersfield, UK; and Imperial College, London, UK
| | - M. Tachi
- Tohoku University Graduate School of Medicine, Sendai, Japan
| | - G. Schultz
- Institute of Wound Research, Department of Obstetrics and Gynecology, College of Medicine, University of Florida
| | - T. Swanson
- South West Healthcare, Warrnambool, Victoria, Australia
| | - R.D. Wolcott
- Southwest Regional Wound Care Centre, Lubbock Texas, US
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3
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Kanno E, Tanno H, Suzuki A, Kamimatsuno R, Tachi M. Reconsideration of iodine in wound irrigation: the effects on Pseudomonas aeruginosa biofilm formation. J Wound Care 2016; 25:335-9. [DOI: 10.12968/jowc.2016.25.6.335] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- E. Kanno
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Japan
| | - H. Tanno
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Japan
| | - A. Suzuki
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Japan
| | - R. Kamimatsuno
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Japan
| | - M. Tachi
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Japan
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4
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Ohnuma H, Tachi M, Kumano A, Matsubayashi T, Hirano Y. Difference Of Right And Left Foot Kinematics During Stance Phase On Curved Path Running. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000488235.02765.e1] [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: 11/21/2022]
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5
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Tachi M, Murata M, Ide Y, Ito H, Imai K, Kanno K, Sakamoto K. 113-I * THE EFFICACY OF THE "INTRAPULMONARY-ARTERY SEPTATION" SURGICAL APPROACH FOR FONTAN CANDIDATES WITH UNILATERAL PULMONARY ARTERIAL HYPOPLASIA. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.113] [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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6
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Ito H, Murata M, Ide Y, Tachi M, Kanno K, Imai K, Sakamoto K. 118-I * SURGICAL DEBRANCHING OF AORTOPULMONARY COLLATERALS IN PATIENTS WITH SINGLE VENTRICLE PHYSIOLOGY: SUBCLAVIAN ARTERY CLEANING. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.118] [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: 11/13/2022] Open
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7
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Sugimoto A, Ota N, Miyakoshi C, Murata M, Ide Y, Tachi M, Ito H, Ogawa H, Sakamoto K. Mid- to long-term aortic valve-related outcomes after conventional repair for patients with interrupted aortic arch or coarctation of the aorta, combined with ventricular septal defect: the impact of bicuspid aortic valve. Eur J Cardiothorac Surg 2014; 46:952-60; discussion 960. [DOI: 10.1093/ejcts/ezu078] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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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8
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Ito H, Ota N, Murata M, Tosaka Y, Ide Y, Tachi M, Sugimoto A, Ogawa H, Sakamoto K. 048 * MID-TERM OUTCOME OF NEONATAL TRICUSPID VALVE PLASTY FOR PULMONARY ATRESIA AND INTACT VENTRICULAR SEPTUM: TOWARDS BIVENTRICULAR REPAIR. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.48] [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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9
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Sugimoto A, Ota N, Murata M, Ide Y, Tachi M, Ito H, Ogawa H, Sakamoto K. 173 * IMPACT OF BICUSPID AORTIC VALVE ON POSTOPERATIVE VALVE-RELATED MORBIDITY AFTER CONVENTIONAL REPAIR FOR INTERRUPTED AORTIC ARCH/COARCTATION OF AORTA WITH VENTRICULAR SEPTAL DEFECT. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.173] [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: 11/15/2022] Open
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10
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Sugimoto A, Fujimoto Y, Ota N, Murata M, Tosaka Y, Ide Y, Tachi M, Ito H, Sakamoto K. [Intraoperative direct angiography for the diminutive central pulmonary artery in a patient with major aortopulmonary collateral arteries]. Kyobu Geka 2012; 65:369-373. [PMID: 22569493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
It can be difficult to judge the degree of arborization of diminutive central pulmonary arteries (cPA) in patients with major aortopulmonary collateral arteries (MAPCA). Even through preoperative cardiac catheterization may not give adequate information. We introduce intra-operative direct angiography of diminutive cPA for patients with MAPCA. This would be one of the good options to judge the degree of arborization of the diminutive cPA, and to decide an initial surgical treatment. In this case, unifocalization of MAPCA without patch augmentation of pulmonary arteries, and an aortopulmonary shunt were performed at the 1st procedure. As enough growth of the cPA was obtained, this patient did not require additional patch augmentation of the pulmonary artery at the time of complete repair.
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Affiliation(s)
- A Sugimoto
- Department of Cardiovascular Surgery, Mt.Fuji Shizuoka Children's Hospital, Shizuoka, Japan
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Oishi H, Matsumura Y, Ishida I, Sado T, Hoshikawa Y, Kondo T, Tachi M. [Sternal resection and chest wall reconstruction for primitive neuroectodermal tumor of the sternum]. Kyobu Geka 2008; 61:836-840. [PMID: 18788370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Primitive neuroectodermal tumor of the sternum is rare. A 59-year-old woman referred to our department with anterior chest pain and a tumor in the sternum. The patient was diagnosed as primitive neuroectodermal tumor of the sternum by core biopsy of the lesion. She received 2 cycles of preoperative chemotherapy with vincristine, doxorubicin, cyclophosphamide, ifosfamide, etoposide. She underwent a total sternectomy with resection of adjacent bilateral costal cartilages and sternal ends of the clavicles. The skeletal defect of chest wall was reconstructed by polypropylene mesh-resin sandwich. The myocutaneus defect was reconstructed by the pedicled latissimus dorsi myocutaneus flap and the bilateral breast flaps. The postoperative course was uneventful and adjuvant radiotherapy was started 6 weeks after the operation. She died of distant metastases 3 months after the operation, although this patient was free from local recurrence.
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Affiliation(s)
- H Oishi
- Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
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12
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Shibuya K, Tachi M. Oxygenation in the motor cortex during exhaustive pinching exercise. Respir Physiol Neurobiol 2006; 153:261-6. [PMID: 16413231 DOI: 10.1016/j.resp.2005.11.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2005] [Revised: 10/18/2005] [Accepted: 11/19/2005] [Indexed: 11/18/2022]
Abstract
The purpose of this study was to examine the effect of fatigue resulting from exhaustive pinching exercise on frontal and motor cortex activity. Eight healthy subjects (four male and four female) participated in the present study. All subjects performed at 70% of maximal voluntary contraction (MVC) pinching exercise until reaching a state of volitional fatigue. Frontal cortex and motor cortex oxygenation was measured by near-infrared spectroscopy throughout the exhaustive exercise. Frontal cortex and motor cortex oxygenation increased significantly at the 90 and 120 s after the start of exercise compared with the pre-exercise values and these decreased with the time passage. Frontal cortex oxygenation at exhaustion was significantly lower than the 90 and 120 s after the start of exercise, while motor oxygenation at exhaustion was the same value with the pre-exercise value. These findings suggest that the exhaustive exercise induces the decrease of cerebral function and that the fatigue resulting from dynamic exercise decreases the motor cortex activity.
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Affiliation(s)
- Kenichi Shibuya
- Department of Sports Sciences, Japan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056, Japan.
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13
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Funato K, Hond M, Shibuya KI, Tachi M. Physiological and Biomechanical Analysis of Kayak Paddling Simulation Using Circulating Water Channel. Med Sci Sports Exerc 2006. [DOI: 10.1249/00005768-200605001-01917] [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: 11/21/2022]
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Yanagiya T, Kanehisa H, Tachi M, Kuno S, Fukunaga T. Mechanical power during maximal treadmill walking and running in young and elderly men. Eur J Appl Physiol 2004; 92:33-8. [PMID: 14985997 DOI: 10.1007/s00421-004-1049-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2003] [Indexed: 10/26/2022]
Abstract
This study determined mechanical power during movements specific to maximal walking and running using a non-motorized treadmill in 38 elderly [69.4 (5.0) years] and 50 young [24.3 (3.4) years] men. The mean mechanical power over a period of time covering six steps, during which the belt velocity peaked and then kept almost plateau, was determined as a performance score in each of maximal walking (WP) and running (RP). In terms of the value relative to body mass, the relative difference between the two age groups was greater for RP (61.7%) than for WP (21.4%) or isometric knee extension (34.1%) and flexion torque (43.8%). In the two groups, WP was significantly ( P<0.05) correlated to knee extension (r=0.582 for the elderly and r=0.392 for the young) and flexion torque (r=0.524 for the elderly and r=0.574 for the young). Similarly, RP was also significantly (P<0.05) correlated to knee extension (r=0.627 for the elderly and r=0.478 for the young) and flexion torque (r=0.500 for the elderly and r=0.281 for the young). In these relationships, the WP adjusted statistically by thigh muscle torque was similar in the two age groups. However, the corresponding value for RP was significantly higher in the young than in the elderly. The findings here indicate that: (1) the difference between the young and elderly men in mechanical power is greater during maximal running than maximal walking, and (2) although the thigh muscle torque contributes to the power production during the two maximal exercise modes in the two age groups, the RP is greater in the young than in the elderly regardless of the difference in the thigh muscle torque.
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Affiliation(s)
- Toshio Yanagiya
- Department of Sports Sciences, School of Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, 359-1192 Saitama, Japan.
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15
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Tachi M, Kouzaki M, Kanehisa H, Fukunaga T. The influence of circulatory difference on muscle oxygenation and fatigue during intermittent static dorsiflexion. Eur J Appl Physiol 2004; 91:682-8. [PMID: 14704798 DOI: 10.1007/s00421-003-1024-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/01/2003] [Indexed: 11/26/2022]
Abstract
This study aimed to examine the influences of circulatory difference on the utilization of O(2) and the progression of fatigue in the tibialis anterior (TA) muscle during dorsiflexion exercise, with reference to different body postures. The subjects performed intermittent static dorsiflexion at 50% of maximal voluntary contraction (MVC) up to exhaustion with the right leg either up or down relative to the heart. These exercises were performed with and without occluding muscle blood flow. Simultaneously with the surface electromyogram (EMG) measurement, total hemoglobin volume change and tissue oxygenation ( S(t)O(2)) of TA were measured using near-infrared spectroscopy (NIRS). When the subjects performed an exhaustive intermittent dorsiflexion exercise at 50% MVC, the endurance time decreased in the leg up position. Also, the progression of fatigue in TA detected using EMG signals (i.e. integrated EMG and mean power frequency of EMG) was faster with the leg elevated. The NIRS data indicated a lower blood volume and S(t)O(2) with the leg up than with the leg down during the exercise, which suggests that the deficit in the O(2) supply to exercising muscle's demand was more apparent in the leg up position. However, these differences in EMG and NIRS data disappeared when the blood flow was restricted in both positions. From these results it is concluded that the difference in exercising muscle oxygenation between two different body postures influenced the progression of muscle fatigue and caused the difference in endurance performance.
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Affiliation(s)
- Masanobu Tachi
- Department of Life Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, Japan 153-8902
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Kouzaki M, Shinohara M, Masani K, Tachi M, Kanehisa H, Fukunaga T. Local blood circulation among knee extensor synergists in relation to alternate muscle activity during low-level sustained contraction. J Appl Physiol (1985) 2003; 95:49-56. [PMID: 12611770 DOI: 10.1152/japplphysiol.00671.2002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [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: 11/22/2022] Open
Abstract
The relation between local circulation and alternate muscle activity among knee extensor synergists was determined during low-level sustained knee extension at 2.5% of maximal voluntary contraction for 60 min in seven subjects. Blood volume of rectus femoris (RF) and vastus lateralis (VL) was assessed by using near-infrared spectroscopy. Surface electromyogram (EMG) was recorded from RF, VL, and vastus medialis (VM). Alternate muscle activity was observed between RF and either VL or VM. Cross-correlation analysis was used to investigate the relation between blood volume and integrated EMG (iEMG) sequences throughout the task. One negative peak in the cross-correlation function was seen between the iEMG and blood volume with time lag of 30-60 s, indicating that muscle activity increases (or decreases) with the decrease (or increase) in local circulation with the corresponding time lag. Two cases in the emergence of alternate muscle activities, i.e., an increase in the EMG of RF accompanied by a decline of EMG in VL (case I) and vice versa (case II) were further analyzed. The time lag between iEMG and blood volume was longer in case I than that in case II. These results were statistically significant in the RF but not in the VL. It is concluded that even during low-level sustained contraction, local circulation is modulated by the alternate muscle activity of knee extensor synergists, and a negative correlation between the muscle activity and blood volume sequences was found in only RF but not in VL.
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Affiliation(s)
- Motoki Kouzaki
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan.
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Kubo K, Kanehisa H, Miyatani M, Tachi M, Fukunaga T. Effect of low-load resistance training on the tendon properties in middle-aged and elderly women. Acta Physiol Scand 2003; 178:25-32. [PMID: 12713512 DOI: 10.1046/j.1365-201x.2003.01097.x] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIM The purposes of this study were to determine the age-related changes in the tendon-aponeurosis structures and to investigate the effects of low-load resistance training on the tendon-aponeurosis structures in middle-aged and elderly women. METHODS Fifty-one women (55.8 +/- 13.7 years, range: 21-77 years) volunteered to take part in the present study. Furthermore, 11 middle-aged and elderly women (49.7 +/- 9.2 years) performed the low-load resistance training, i.e. squat using body weight, for 6 months. The elongation of the tendon and aponeurosis of the vastus lateralis muscle was directly measured by ultrasonography, while the subjects performed ramp isometric knee extension up to the voluntary maximum, followed by a ramp relaxation. The relationship between the estimated muscle force (Fm) and tendon elongation (L) during the ascending phase was fitted to a linear regression, the slope of which was defined as stiffness. The percentage of the area within the Fm-L loop to the area beneath the curve during the ascending phase was calculated as hysteresis. RESULTS Maximal strain (L/initial tendon length) and stiffness of the tendon-aponeurosis structures decreased significantly with ageing. In contrast, the hysteresis increased significantly with ageing. In addition, low-load resistance training produced no significant change in stiffness and hysteresis, but significantly increased the maximal elongation of tendon-aponeurosis structures from 23.3 +/- 2.1 mm to 24.8 +/- 2.2 mm (P = 0.045). CONCLUSION These results suggest that increasing age results in a decrease in the elasticity of tendon-aponeurosis structures and an increase in their viscosity. Furthermore, the low-load resistance training made the elasticity of tendon-aponeurosis structures increase.
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Affiliation(s)
- K Kubo
- Department of Life Science (Sports Sciences), University of Tokyo, Tokyo, Japan
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18
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Abstract
Muscle fascicle lengths of vastus lateralis (VL) muscle were measured in five healthy men during slow pedaling to investigate the interaction between muscle fibers and tendon. Subjects cycled at a pedaling rate of 40 rpm (98 W). During exercise, fascicle lengths changed from 91 +/- 7 (SE) to 127 +/- 5 mm. It was suggested that fascicles were on the descending limb of their force-length relationship. The average shortening velocity of fascicle was greater than that of muscle-tendon complex in the first half of the knee extension phase and was less in the second half. The maximum shortening velocity of fascicle in the knee extension phase was less than that of muscle-tendon complex by 22 +/- 9%. These discrepancies in velocities were mainly caused by the elongation of the tendinous tissue. It was suggested that the elasticity of VL tendinous tissue enabled VL fascicles to develop force at closer length to their optimal length and kept the maximum shortening velocity of VL fascicles low during slow pedaling.
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Affiliation(s)
- T Muraoka
- Laboratory of Sports Sciences, Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Meguro, Tokyo 153-8902, Japan
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Tachi M, Hirabayashi S, Kuroda E. Unusual development of acute compartment syndrome caused by a suction injury: a case report. Scand J Plast Reconstr Surg Hand Surg 2001; 35:329-30. [PMID: 11680405 DOI: 10.1080/028443101750523276] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
There have been recent reports of acute compartment syndrome secondary to suction injuries of the hands of children. We report the case of a 68-year-old patient who developed an acute compartment syndrome of the forearm after his arm had been sucked into an exhaust port. He was treated by emergency fasciotomies and the wound was closed five days later with a small skin graft. His recovery was uneventful.
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Affiliation(s)
- M Tachi
- Department of Plastic and Reconstructive Surgery, Teikyo University School of Medicine, Tokyo, Japan
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20
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Abstract
Muscle force (MF) is linearly related to physiological cross-sectional area (CSA), which is obtained from muscle volume (MV) divided by fibre length. Taking into account the fact that joint torque (TQ) is determined by MF multiplied by the moment arm, the maximal TQ would be a function of MV. This proposition was tested in the present study by investigating the relationship between MV and TQ for elbow flexor (EF) and extensor (EE) muscles of 26 males. The MVs of EF and EE were determined from a series of muscle CSA by magnetic resonance imaging (MRI), and pennation angle (theta) and FL by ultrasonography (US). Maximal isometric TQ was measured at right angle of elbow joint for EF and EE. There was a highly significant correlation between MV and TQ both for EF and EE (r=0.95 and 0.96 respectively) compared with that between muscle CSA and TQ, suggesting the dependence of TQ on MV. Furthermore, prediction equations for MV (MVULT) from muscle thickness (MT) measured by US was developed with reference to MVMRI by the MRI on 26 subjects, and the equations were applied to estimate MV of healthy university students (CON; 160 males) and sports athletes (ATH; 99 males). There were significant linear relationships between MVULT and TQ both for EF (r=0.783) and EE (r=0.695) for all subjects (n=259). The MVULT was significantly higher in ATH (by 32% for EF and 33% for EE, respectively) than in CON. Similarly, significantly greater TQ was observed in ATH (by 35% for EF, 37% for EE, respectively). The theta for EE showed no difference between both groups (17.8 degrees for CON and 17.5 degrees for ATH). On the other hand, the TQ to MV ratio were identical for CON and ATH. The results reveal that the muscle volume of the upper arm is a major determinant of joint torque (TQ), regardless of athletic training.
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Affiliation(s)
- T Fukunaga
- Department of Life Sciences, University of Tokyo, Tokyo, Japan
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Hirabayashi S, Umamoto N, Tachi M, Sugawara Y, Sakurai A, Harii K. Optimized 3-D CT scan protocol for longitudinal morphological estimation in craniofacial surgery. J Craniofac Surg 2001; 12:136-40. [PMID: 11314623 DOI: 10.1097/00001665-200103000-00009] [Citation(s) in RCA: 5] [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] [Indexed: 11/26/2022] Open
Abstract
Frequent three-dimensional computed tomography scanning may cause deterioration of the lenses of the eye, which are susceptible to x-rays. The authors performed an experimental study using a phantom head to establish an optimized three-dimensional computed tomography scan protocol for longitudinal morphological estimation in craniofacial surgery. Volume computed tomography scans were performed using a Hi-Speed Advantage SG CT scanner (GE Medical Systems, Milwaukee, WI) in the axial plane with a combination of scan parameters of varied values. The radiation doses induced by each scanning were measured using thermoluminescent dosimeter chips attached to the position of the lenses in the phantom. Two-dimensional images in the coronal plane and three-dimensional images of the osseous surface were generated from each accumulated data set. For each scan parameter, the images generated from data accumulated using different values were compared. The study showed that lens radiation dose increased with tube potential and was almost directly proportional to tube current and 1/pitch. The slice thickness did not affect lens radiation doses significantly. Images with good contrast resolution and low artifact level sufficient for estimating morphological changes were obtained using a low tube potential of 100 kVp and a tube current of 100 mA. In regard to z-axis spatial resolution, a slice thickness of less than 3 mm was required for precisely pointing out bony edges in the two-dimensional reformation images. These results led us to conclude that volume computed tomography for longitudinal examination in craniofacial surgery should be kept to a minimum frequency and performed using a low-dose technique, small slice thickness, and large pitch.
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Affiliation(s)
- S Hirabayashi
- Division of Plastic and Reconstructive Surgery, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, Japan.
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Hirabayashi S, Tachi M. [Saethre-Chotzen syndrome]. Ryoikibetsu Shokogun Shirizu 2001:574-6. [PMID: 11043329] [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] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- S Hirabayashi
- Division of Plastic Surgery, School of Medicine, Teikyo University
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Abstract
A practical synthesis of 1,2,3,4,5,6-hexahydro-1,5-imino-10-hydroxy-9-methoxy-3,8,11-trimethyl-3- benzazocin-4-one (3) as an ABC ring model compound of ecteinascidin 743 and safracins from 3-hydroxy-4-methoxy-5-methylbenzaldehyde (7) is described. The overall yield in 15 steps is 27%.
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Affiliation(s)
- N Saito
- Meiji Pharmaceutical University, Tokyo, Japan
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24
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Tachi M. [Institutional development of UOEH]. J UOEH 1999; 21:1-6. [PMID: 10202786 DOI: 10.7888/juoeh.21.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Kanda K, Tachi M, Nishimura Y, Kato F, Murata A. Detection of single-stranded cohesive ends in the genome of Bacillus thuringiensis temperate phage KK-88. Acta Virol 1999; 43:45-7. [PMID: 10672343] [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: 02/15/2023]
Abstract
Cohesive ends (cos sites) were detected in the genome of temperate KK-88 phage in Bacillus thuringiensis after analysis of the phage DNA generated by the 3'-5' exonuclease activity of Klenow fragment of DNA polymerase I. In addition, unlike the 5'-protruding ends of coliphage lambda genome, the ends of KK-88 phage genome were found to be 3'-protruding. The restriction map of the phage genome was also constructed on the basis of position of the cos fragments.
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Affiliation(s)
- K Kanda
- Department of Applied Biological Sciences, Saga University, Japan
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26
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Fujita M, Takahashi R, Liang P, Saya H, Ashoori F, Tachi M, Kitazawa S, Maeda S. Role of alternative splicing of the rat erythropoietin receptor gene in normal and erythroleukemia cells. Leukemia 1997; 11 Suppl 3:444-5. [PMID: 9209419] [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: 02/04/2023]
Abstract
An alternatively splicing of the rat erythropoietin receptor (EpoR) gene was identified in normal and erythroleukemia cells by the reverse transcription PCR method. Insertion of a 105 bp fragment at the region corresponding to the extracellular domain of rat EpoR was found. The insert sequence, which encodes additional 21 amino acids, is similar to that previously found in the mouse EpoR gene, however, has an additional 27 bp direct repeat. Due to the presence of a stop codon in the insert, the alternative transcript is translated to a truncated and soluble form of EpoR which is preferentially expressed in liver, spleen, kidney, heart, and bone marrow cells as well as cultured erythroleukemia cells. These findings suggest that alternative splicing of the EpoR gene may play an important role in proliferation and differentiation of rat erythroid cells.
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Affiliation(s)
- M Fujita
- Second Department of Pathology, Kobe University School of Medicine, Japan
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27
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Tamura T, Aoyama N, Saya H, Haga H, Futami S, Miyamoto M, Koh T, Ariyasu T, Tachi M, Kasuga M. Induction of Fas-mediated apoptosis in p53-transfected human colon carcinoma cells. Oncogene 1995; 11:1939-46. [PMID: 7478511] [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: 01/25/2023]
Abstract
To investigate the biological function of p53 in colon carcinoma cells, a wild-type p53 expression plasmid under the control of the human cytomegalovirus promoter was stably transfected into the human colon adenocarcinoma cell line WiDr, which carries a mutation of the p53 gene at codon 273. Exogenous wild-type p53 transcripts were detected at various expression levels in 8 of 117 G418-resistant clones. The growth rates of the wild-type p53+ clones in culture did not change significantly. The efficiency of colony formation in soft agar, however, was completely suppressed in two wild-type p53+ clones. This is the first to demonstrate the feasibility of stable transfection of the wild-type p53 gene under the control of non-inducible promoter in human colon cancer cells. The major alteration found was that wild-type p53+ cells which were incubated with anti-Fas IgM showed marked cytolysis with preferential over-expression of wild-type p53 accompanied by overexpression of a cyclin-dependent kinase inhibitor, WAF1, whereas the endogenous mutant p53 retained its expression level. The findings suggest that a Fas-initiated pathway is incidentally linked to a p53-dependent apoptotic pathway through the reconstituted wild-type p53 gene in WiDr cells. This model should help elucidating the additional role of the p53 tumor suppressor gene and the mechanism of apoptosis in colon carcinoma cells.
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Affiliation(s)
- T Tamura
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Japan
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28
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Kagehara M, Tachi M, Harii K, Iwamori M. Programmed expression of cholesterol sulfotransferase and transglutaminase during epidermal differentiation of murine skin development. Biochim Biophys Acta 1994; 1215:183-9. [PMID: 7948002 DOI: 10.1016/0005-2760(94)90109-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
To clarify the role of cholesterol sulfate (CS) in the process of epidermal differentiation in vivo, we investigated the concentration of CS and the specific activities of cholesterol sulfotransferase (CST), cholesterol sulfate sulfatase (CS sulfatase) and epidermal transglutaminase (ETG) in murine skin in the pre- and postnatal periods. In the skin at day 14 of gestation, CS was not detected with TLC and the specific activities of all the enzymes were low. However, concomitant with the formation of the multilayered structure of the epidermis (at day 16), the specific activities of CST steeply increased. Although the insoluble CS sulfatase in the microsomal fraction remained at a relatively constant level, the soluble CST in the cytosol fraction showed a 6-fold increase from day 14 to day 16, and the activity decreased continuously in the following period, reaching one forty-sixth of the maximum level at 4-months-old mice. Reflected by the increase in activity, CS was detected in fetal skin at day 15, and the concentration in epidermis significantly increased during the gestation period, reaching maximum level at day 17. Furthermore, the changes in the concentration of cholesterol sulfate were identical with those of N-(O-linoleoyl)-omega-hydroxy fatty acyl sphingosine and its glucosyl derivative in the epidermis. On the other hand, the specific activity of ETG increased after birth. Thus, the activation of CST and ETG was shown to occur separately in association with the formation of the multilayered structure and thickening of the stratum corneum, respectively.
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Affiliation(s)
- M Kagehara
- Department of Plastic Surgery, Faculty of Medicine, University of Tokyo, Japan
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29
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Morimoto T, Hosoya R, Matsufuji H, Tachi M, Yokoyama J, Nishimura K. Difficulty in removing a percutaneous central venous catheter inserted from a peripheral vein. Acta Paediatr Jpn 1993; 35:352-3. [PMID: 8379329 DOI: 10.1111/j.1442-200x.1993.tb03069.x] [Citation(s) in RCA: 5] [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: 01/30/2023]
Abstract
Two girls with acute lymphocytic leukemia (ALL) are reported. There were difficulties in removing their central venous catheters inserted from a peripheral vein. One girl required surgery under general anesthesia for the removal. The other patient received continuous infusion of low dose urokinase from a distal peripheral vein. The residual catheter was then removed successfully.
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Affiliation(s)
- T Morimoto
- Department of Pediatrics, St Luke's International Hospital, Tokyo, Japan
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30
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Abstract
The objective of this study was to reveal the health effects of acrylonitrile (AN) in seven Japanese acrylic fiber manufacturing factories. The study subjects were 157 AN-exposed male shift workers who had been exposed to AN for 17 years on the average and 537 control workers whose working conditions were similar to those of the AN-exposed workers. The seven factories were classified into two groups according to their AN exposure levels in 1987, and also into three groups on the basis of 1976 exposure levels. The most highly exposed group of subjects showed a mean AN concentration of 1.13 ppm by personal sampling. Medical examination failed to detect any health effects attributable to long-term exposure to AN, although the existence of some symptoms of acute irritation could not be completely ruled out. The results of this study may provide a "no observed effects level" for human on-the-job exposure with regard to the health effects examined here.
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Affiliation(s)
- T Muto
- Department of Preventive Medicine and Public Health, School of Medicine, Keio University, Tokyo, Japan
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31
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Tachi N, Tachi M, Sasaki K, Nagata N, Chiba S. Dystrophin analysis in the differential diagnosis of autosomal recessive muscular dystrophy of childhood and Duchenne muscular dystrophy. Pediatr Neurol 1990; 6:265-8. [PMID: 2206159 DOI: 10.1016/0887-8994(90)90119-l] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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] [Indexed: 12/30/2022]
Abstract
We report 2 patients with childhood autosomal recessive muscular dystrophy. Both patients had slight muscle weakness without enlargement of the calf muscles or involvement of the facial muscles. Their clinical courses are static. Muscle histology revealed characteristic features of muscular dystrophy. Dystrophin was identifiable in the sarcolemma of both patients by immunocytochemical staining with an antidystrophin antibody. At an early age, immunocytochemical analysis with antidystrophin antibody was useful in distinguishing between childhood autosomal recessive and Duchenne muscular dystrophies.
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Affiliation(s)
- N Tachi
- Department of Pediatrics, Sapporo Medical College, Japan
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32
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Abstract
The present report describes the histochemical and biochemical findings of biopsied muscles in a 26-year-old male with myophosphorylase deficiency. Histochemical analysis of the first biopsy specimen revealed that the phosphorylase activity was absent, corresponding to an absent band at 94,000 Da on the basis of sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Histochemically the second biopsy specimen showed a partial phosphorylase activity of type 2B fibers, corresponding to a weakly staining band at 94,000 Da on the basis of SDS-PAGE. The present study supports the hypothesis that myophosphorylase deficiency is essentially a single gene disorder, characterized by absence or marked reduction of the myophosphorylase protein.
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Affiliation(s)
- N Tachi
- Department of Pediatrics, Sapporo Medical College, Japan
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33
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Abstract
A rapid procedure which is based on combined ion-exchange chromatography and solubility was established for determination of the activity of ganglioside synthases and cerebroside sulfotransferase. The procedure consists of selective elution of radiolabeled reaction products (acidic glycolipids) freed from labeled precursors and breakdown products on a DEAE-Sephadex column and of direct radioassay of the products in the eluate. Monosialogangliosides were eluted from the column with 40 mM ammonium acetate (AcONH4) in methanol, cerebroside sulfate with 90 mM AcONH4 in methanol, and disialogangliosides with 40 mM AcONH4 in isopropanol/n-hexane/water (55/20/19, v/v/v). The established procedure is simple, reproducible, and economical. Using rat Golgi membrane as enzyme source the recovery rate of the products was over 95%.
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Affiliation(s)
- M Kawano
- Biochemistry Laboratory, Hokkaido University School of Medicine, Sapporo, Japan
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34
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Abstract
We report the first Japanese patients, a mother and son, with early-onset, benign, autosomal-dominant, limb-girdle myopathy with contractures (Bethlem myopathy). The clinical features revealed predominantly proximal muscle weakness--especially in the limb-girdle muscles--joint contractures increasing with age, a benign course, and the absence of cardiac involvement. Muscle histology revealed nonspecific myopathy changes without dystrophic features. Electromyogram revealed a reduced interference pattern with a giant spike suggesting a neurogenic process.
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Affiliation(s)
- N Tachi
- Department of Pediatrics, Sapporo Medical College, Japan
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35
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Abstract
We report a 5-year-old boy with lysosomal glycogen storage disease and normal acid maltase activity. This patient, the fourth reported in the literature, was referred to our hospital for evaluation of elevated serum GOT, GPT, and CK activities. He had neither muscle weakness nor atrophy. Echocardiography demonstrated marked thickening of the intraventricular septum and left ventricular wall which indicated hypertrophic cardiomyopathy. Biopsied skeletal muscle disclosed massive accumulation of glycogen and autophagic vacuoles. Electron microscopy of biopsied cardiac muscle revealed severe myofibrillar disruption with marked accumulation of free and intralysosomal glycogen. Activities of all major glycolytic enzymes in skeletal muscle, including acid maltase, were normal. It is unknown why muscle lysosomes appeared to be unable to digest the trapped glycogen despite the presence of acid maltase. Our findings illustrate the importance of performing skeletal muscle investigation during childhood in patients with hypertrophic cardiomyopathy.
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Affiliation(s)
- N Tachi
- Department of Pediatrics; Sapporo Medical College, Japan
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36
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Nishimoto J, Tsukamoto H, Inui K, Okada S, Yabuuchi H, Tamai H, Mino M, Gasa S, Tachi M, Yamano T. [Three cases of mucolipidosis III with significant differences in clinical pictures--reevaluation of the classification of mucolipidosis II and III]. No To Hattatsu 1989; 21:49-55. [PMID: 2910331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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37
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Abstract
We report the first Japanese female patient with Walker-Warburg syndrome. She had generalized muscle hypotonia with hydrocephalus due to Dandy-Walker malformation and bilateral microphthalmia with opaque corneas. She had severe motor and mental retardation. Muscle histology reflected advanced changes of muscular dystrophy. We discuss the relationship between Fukuyama congenital muscular dystrophy and Walker-Warburg syndrome, both of which fall within a spectrum of developmental abnormalities with a common cause. In Fukuyama congenital muscular dystrophy, ocular abnormalities are less severe.
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Affiliation(s)
- N Tachi
- Department of Pediatrics; Sapporo Medical College, Japan
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38
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Endo S, Soeda S, Fukuma H, Tachi M, Kinoshita S, Yamamoto R, Saiki S, Hebisawa A. [A case of extraorbital sebaceous carcinoma]. Gan No Rinsho 1987; 33:1072-8. [PMID: 3626035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A case of sebaceous carcinoma of the forehead of a 77-year-old male is reported and discussed and included in a review of all such cases reported in Japan. The patient had a round erosion on the right forehead that had caused itching for 15 months. An excisional biopsy of that lesion disclosed a malignancy and a subsequent wide excision was performed. The tumor recurred several times after excision and partially effective radiation therapy. The patient finally died of aspiration pneumonia 3 years after the first operation. An autopsy revealed that he had a recurrent sebaceous carcinoma extending to the periosteum of the right temporal bone and a solitary pulmonary metastasis.
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39
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Katagiri Y, Tachi M, Iwata H, Kawai M. [Excretion of cadmium in the urine in various age groups]. Igaku To Seibutsugaku 1971; 82:239-43. [PMID: 5169579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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40
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Katagiri Y, Tachi M. [Elution into formol solution of cadmium in the organ]. Igaku To Seibutsugaku 1971; 82:29-32. [PMID: 5102543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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41
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Tachi M, Katagiri Y. [Determination of cadmium in organs by atomic absorption spectrophotometry]. Igaku To Seibutsugaku 1970; 81:131-7. [PMID: 5529020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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42
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Tachi M. Japan: interim report of the Population Problems Inquiry Council. Stud Fam Plann 1970:1-4. [PMID: 5538467] [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: 01/15/2023]
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43
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Matsuda Y, Tachi M, Miyata S. [Effects of Na-DMS on acute lead poisoning]. Igaku To Seibutsugaku 1968; 76:71-6. [PMID: 5692546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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44
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Iguchi T, Tachi M, Miyata S. [Determination of heavy metals in biological specimens by the atomic absorption spectrum. 2. Analysis of cadmium in the urine and blood]. Igaku To Seibutsugaku 1966; 73:286-91. [PMID: 6009770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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45
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Iguchi T, Tachi M, Miyata S. [Determination of heavy metals in biological specimens by atomic absorption spectroscopy. Lead in urine and blood]. Igaku To Seibutsugaku 1966; 73:163-168. [PMID: 6009599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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46
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Tachi M, Iwata H. [Difference between male and female skin temperature of fingers immersed in cold water]. Igaku To Seibutsugaku 1966; 73:193-7. [PMID: 6010400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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47
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Tachi M, Miyata S, Matsuda S. [Chelation of Na-DMS (dimercaptosuccininc acid disodium salt) and its effect on cadmium poisoning]. Igaku To Seibutsugaku 1966; 73:146-52. [PMID: 6009134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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48
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Tachi M, Miyata S, Matsuda Y. [Effect of Na-DMS (dimercaptosuccinic acid disodium salt) on the acceleration of lead excretion]. Igaku To Seibutsugaku 1966; 73:35-42. [PMID: 4961203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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