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Shimizu Y, Miyagi A, Nakagawa T. Development of continuous measurement system for hydrogen and impurity gases using detector tube. Rev Sci Instrum 2023; 94:095114. [PMID: 37737704 DOI: 10.1063/5.0152773] [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: 04/01/2023] [Accepted: 08/26/2023] [Indexed: 09/23/2023]
Abstract
A relatively accurate, inexpensive, simple, and continuous quantification system for hydrogen and impurity gas(es) using a detector tube was developed in this study. Additionally, different detector tubes can be applied to measure different types of gases in a wide range from ppm order to % level. We optimized this system and evaluated its accuracy as well as the behavior of released H2 and impurity (NH3) gases from a hydrolysis of ammonia borane using a Pt/Al2O3 catalyst. The accuracy of hydrogen quantitation achieved by this system was comparable to that of commercial mass flow meters, and the accuracy of ammonia quantitation was 10% or 5% relative standard deviation, which depends on the detector tube. The concentration of released NH3 was evaluated by image analysis with a time-lapse video of the detector tube and succeeded in analyzing from ppm to % order. The H2 and NH3 release behaviors agreed with pH, and the percentage of reaction was estimated by NMR measurement of the reacted solution. These results confirmed the accuracy of this system.
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Affiliation(s)
- Y Shimizu
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan
| | - A Miyagi
- Okinawa Prefectural Naha Kokusai Senior High School, 1-29-1, Ameku, Naha, Okinawa 900-0005, Japan
- Science Education Academy of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan
| | - T Nakagawa
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan
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Miyazaki Y, Sugizaki R, Kawasaki M, Nakagawa T, Saho Y, Tateishi T. Fifth metatarsal strain distribution during cutting motions in soccer. Sports Biomech 2023:1-17. [PMID: 37533159 DOI: 10.1080/14763141.2023.2241839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
The objective of this study was to determine the fifth metatarsal strain generation mechanism during cutting motions performed while playing soccer using a finite element foot model. Five collegiate soccer players performed the side-step cutting and the cross-step cutting motions to measure the three-dimensional foot kinematics, ground reaction force, and plantar pressure distribution. In addition, a finite-element model of a foot consisting of bony structures, ligaments, and skin was constructed from computed tomography images. Simulations were conducted to perform the cutting motions, using the measured foot motion and distributed load on the plantar surface as boundary conditions for the model. During the side-step cutting, the maximum principal strain on the fifth metatarsal was correlated to forefoot adduction angle during stepping out. For cross-step cutting, the maximum principal strain was correlated with plantar pressure at the distal end of the fifth metatarsal. Therefore, to prevent a fracture, it is necessary to take measures to reduce the lateral bending deformation of the forefoot while stepping out during side-step cutting and to reduce the plantar pressure on the distal end of the fifth metatarsal during cross-step cutting.
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Affiliation(s)
- Yusuke Miyazaki
- Department of Systems and Control Engineering, Tokyo Institute of Technology, Tokyo, Japan
| | - Rui Sugizaki
- Department of Systems and Control Engineering, Tokyo Institute of Technology, Tokyo, Japan
| | - Miku Kawasaki
- Department of Systems and Control Engineering, Tokyo Institute of Technology, Tokyo, Japan
| | - Takumi Nakagawa
- Department of Systems and Control Engineering, Tokyo Institute of Technology, Tokyo, Japan
| | - Yasuaki Saho
- Department of Sport and Medical Science, Teikyo University, Tokyo, Japan
| | - Tomohiko Tateishi
- Division of Orthopedics, The Fraternity Memorial Hospital, Tokyo, Japan
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Nishihara N, Masuda H, Shimazaki N, Toyooka S, Kawano H, Nakagawa T. Correction of Varus Alignment with Peripheral Osteophyte Removal during Total Knee Arthroplasty: An Assessment with Computer Navigation. J Knee Surg 2023; 36:292-297. [PMID: 34520563 DOI: 10.1055/s-0041-1731737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Techniques for symmetrical balancing in flexion and extension have been described; however, the ideal technique is unclear. This study aimed to clarify whether resection of peripheral osteophytes could restore neutral hip-knee-ankle (HKA) angle of varus deformity of arthritic knees. Data from 90 varus arthritic knees that had undergone total knee arthroplasty (TKA) using a nonimage-based navigation system were analyzed. The change in the coronal mechanical axis, while applying manual valgus stress at extension and 90 degrees of knee flexion, was recorded after the following sequential procedures: (1) anterior cruciate ligament (ACL) sectioning, (2) subperiosteal stripping of the deep medial collateral ligament (MCL) from the underlying osteophytes on the medial tibia, and (3) complete removal of peripheral osteophytes from the proximal medial tibia and distal medial femoral condyle. Repeated measures of analysis of variance (ANOVA) were performed to compare the varus angle among each step, and a post hoc analysis by paired t-test was utilized to compare the parameters between baseline and each step. The varus alignment with valgus stress at extension and 90 degrees of flexion (mean: 6.0 ± 3.6 and 5.2 ± 3.9 degrees of varus, respectively) was significantly corrected to a near-neutral mechanical axis (mean: 0.9 ± 2.4 and 1.4 ± 4.2 degrees of varus, respectively) after peripheral osteophyte resection (p < 0.01, both). In many cases, varus deformity of arthritic knees could be corrected to near-neutral HKA angle by applying manual valgus stress after complete peripheral osteophyte resection. These procedures could facilitate soft tissue balancing in TKA, minimizing the risk of overrelease of the medial soft tissues.
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Affiliation(s)
- Nobuhiro Nishihara
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Hironari Masuda
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Naoya Shimazaki
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan.,Department of Orthopaedic Surgery, Shimazaki Hospital, Ibaraki, Japan
| | - Seikai Toyooka
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Hirotaka Kawano
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
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Toyooka S, Tsukada K, Yasui Y, Saho Y, Okawa Y, Ando S, Nakagawa T, Kawano H, Miyamoto W. Association of medial arch support of foot orthoses with knee valgus angle at initial contact during cutting maneuvers in female athletes: a controlled laboratory study. BMC Sports Sci Med Rehabil 2022; 14:214. [PMID: 36536460 PMCID: PMC9762016 DOI: 10.1186/s13102-022-00608-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND The effect of medial arch support foot orthoses on kinematics and kinetics of the knee joint has remained unknown. METHODS Sixteen female collegiate-level athletes volunteered to participate. Participants were asked to perform a 30° sidestep cut using orthoses of 3 different medial arch heights, comprising of the following: (1) "low," a full flat foot orthosis without arch support, (2) "mid," a commercially available foot orthosis with general height arch support, and (3) "high," a foot orthosis with double the commercially available height for arch support to observe the effect on the knee when overcorrected. Kinematics and kinetics of the knee joint were collected by a markerless motion capture system with 2 force plates and compared between orthosis types using linear regression analysis, assuming a correlation between the measurements of the same cases in the error term. RESULTS The knee valgus angle at initial contact was 2.3 ± 5.2 degrees for "low" medial arch support height, 2.1 ± 5.8 degrees for "mid," and 0.4 ± 6.6 degrees for "high". Increased arch support height significantly decreased the knee valgus angle at initial contact (p = 0.002). Other kinematic and kinetic measurements did not differ between groups. CONCLUSIONS The valgus angle of the knee at initial contact was decreased by the height of the medial arch support provided by foot orthosis during cutting manoeuvres. Increasing the arch support height may decrease knee valgus angle at initial contact. Medial arch support of foot orthosis may be effective in risk reduction of ACL injury. Clinical trial registration numbers and date of registration: UMIN000046071, 15/11/2021.
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Affiliation(s)
- Seikai Toyooka
- grid.264706.10000 0000 9239 9995Department of Orthopaedic Surgery, Teikyo University, Tokyo, Japan
| | - Keisuke Tsukada
- grid.264706.10000 0000 9239 9995Department of Orthopaedic Surgery, Teikyo University, Tokyo, Japan
| | - Youich Yasui
- grid.264706.10000 0000 9239 9995Department of Orthopaedic Surgery, Teikyo University, Tokyo, Japan
| | - Yasuaki Saho
- grid.264706.10000 0000 9239 9995Department of Orthopaedic Surgery, Teikyo University, Tokyo, Japan ,grid.264706.10000 0000 9239 9995Faculty of Medical Technology, Teikyo University, Tokyo, Japan
| | - Yasuaki Okawa
- grid.264706.10000 0000 9239 9995Faculty of Medical Technology, Teikyo University, Tokyo, Japan
| | - Shuji Ando
- grid.143643.70000 0001 0660 6861Tokyo University of Science, Tokyo, Japan
| | - Takumi Nakagawa
- grid.264706.10000 0000 9239 9995Department of Orthopaedic Surgery, Teikyo University, Tokyo, Japan
| | - Hirotaka Kawano
- grid.264706.10000 0000 9239 9995Department of Orthopaedic Surgery, Teikyo University, Tokyo, Japan
| | - Wataru Miyamoto
- grid.264706.10000 0000 9239 9995Department of Orthopaedic Surgery, Teikyo University, Tokyo, Japan
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Toyooka S, Masuda H, Nishihara N, Miyamoto W, Kobayashi T, Kawano H, Nakagawa T. Assessing the Role of Minimal Medial Tissue Release during Navigation-Assisted Varus Total Knee Arthroplasty Based on the Degree of Preoperative Varus Deformity. J Knee Surg 2022; 35:1236-1241. [PMID: 33472261 DOI: 10.1055/s-0040-1722658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We assessed the impact of a minimal medial soft-tissue release with complete peripheral osteophyte removal on the ability to attain manual preresection deformity correction during navigation-assisted total knee arthroplasty (TKA) for varus osteoarthritis. We included 131 TKAs for 109 patients with medial compartment predominant osteoarthritis. The steps for achieving minimal medial soft-tissue release were performed as follows: (1) elevation of a periosteal sleeve to 5-mm distal to the joint line and (2) complete removal of peripheral osteophytes. The evaluation criteria of this study were as follows: (1) age, (2) height, (3) weight, (4) body mass index (BMI), (5) sex, (6) the preoperative femorotibial mechanical angle in the neutral position before medial release and (7) the mechanical angle in maximum manual valgus stress after the two-step medial-release procedure (measured on the navigation screens). Multiple regression analysis of the criteria was performed to determine the degree of varus deformity that allowed neutral alignment but required extensive medial release. The femorotibial mechanical angle in the neutral position before medial release and sex correlated with the mechanical angle in maximum manual valgus stress on the navigation screen after medial release (r = 0.72, p < 0.001). Based on the regression formula, the maximum degree of preoperative varus deformity that allowed neutral alignment by the minimum medial-release procedure was 5.3 degrees for males and 9.1 degrees for females. The magnitude of deformity which has an impact on the ability to correct varus deformity (by minimal soft-tissue release and complete osteophyte removal) was clarified. If the preoperative degree of varus deformity was within 5.3 degrees for males and 9.1 degrees for females, an extensive medial release was not required to obtain neutral alignment.
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Affiliation(s)
- Seikai Toyooka
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Hironari Masuda
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Nobuhiro Nishihara
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Wataru Miyamoto
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Takashi Kobayashi
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Hirotaka Kawano
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
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Kimura M, Yoshimura I, Yanagida K, Yoshida T, Hagiwara K, Kaneko T, Yamada Y, Nakagawa T. Evaluation of ejaculation function using a simple questionnaire. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.448] [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: 10/18/2022]
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Maekawa M, Maekawa T, Sasase T, Takagi K, Takeuchi S, Kitamoto M, Nakagawa T, Toyoda K, Konishi N, Ohta T, Yamada T. Pathophysiological Analysis of Uninephrectomized db/db Mice as a Model of Severe Diabetic Kidney Disease. Physiol Res 2022; 71:209-217. [DOI: 10.33549/physiolres.934784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Diabetic nephropathy, included in diabetic kidney disease (DKD), is the primary disease leading to end-stage renal disease (ESRD) or dialysis treatment, accounting for more than 40% of all patients with ESRD or receiving dialysis. Developing new therapeutics to prevent the transition to ESRD or dialysis treatment requires an understanding of the pathophysiology of DKD and an appropriate animal model for drug efficacy studies. In this study, we investigated the pathophysiology of diabetic kidney disease with type 2 diabetes in uninephrectomized db/db mice. In addition, the nephrectomized db/db mice from 10 weeks to 42 weeks were used to assess the efficacy of long-term administration of the angiotensin-II–receptor antagonist losartan. The blood and urinary biochemical parameters and the blood pressure which is a main pharmacological endpoint of the losartan therapy, were periodically measured. And at the end, histopathological analysis was performed. Uninephrectomized db/db mice clearly developed obesity and hyperglycemia from young age. Furthermore, they showed renal pathophysiological changes, such as increased urinary albumin-creatinine ratio (UACR) (the peak value 3104±986 in 40-week-old mice), glomerular hypertrophy and increased fibrotic areas in the tubulointerstitial tubules. The blood pressure in the losartan group was significantly low compared to the normotensive Vehicle group. However, as expected, Losartan suppressed the increase in UACR (829±500) indicating the medication was sufficient, but the histopathological abnormalities including tubular interstitial fibrosis did not improve. These results suggest that the uninephrectomized db/db mice are useful as an animal model of the severe DKD indicated by the comparison of the efficacy of losartan in this model with the efficacy of losartan in clinical practice.
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Affiliation(s)
| | - T Maekawa
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
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Hasegawa H, Nakagawa T, Noguchi K, Tokuda IT. Experimental Study on Inspiratory Phonation Using Physical Model of the Vocal Folds. J Voice 2022:S0892-1997(22)00023-6. [PMID: 35227554 DOI: 10.1016/j.jvoice.2022.01.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 11/21/2022]
Abstract
In inspiratory phonation, the air is inhaled from the mouth. The inhaled air passes through the glottis towards the lungs, thereby inducing the vocal fold vibrations. Such phonation takes place in various situations such as sighs, laughter, and crying. To characterize the inspiratory phonation, an experimental study was carried out using a physical model of the vocal folds. By reversing the direction of the airflow that passed through the vocal fold model, the inspiratory phonation was experimentally realized and compared with the normal expiratory phonation. Our experiments revealed that the phonation threshold pressures as well as the volume flow rates decreased under the inspiratory condition. Accordingly, the vocal efficiency was increased. The fundamental frequency was also increased under the inspiratory condition. The kymograms showed that phase of the upper edge of the vocal fold advanced that of the lower edge under the inspiratory phonation. A mathematical model of the vocal folds was further constructed to elucidate these experiments. Except for few aspects, our experimental findings are in good agreement with the preceding studies on inspiratory phonation (e.g., reversed propagation of the mucosal waves observed in a singer, increased pitches in human subjects, and use of inspiratory phonation in speech therapy).
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Affiliation(s)
- Hiroto Hasegawa
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Takumi Nakagawa
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Kohei Noguchi
- Department of Mechanical Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Isao T Tokuda
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan.
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Wang S, Makinouchi A, Okamoto M, Kotaka T, Maeshima M, Ibe N, Nakagawa T. Viscoplastic Material Modeling for the Stretch Blow Molding Simulation. INT POLYM PROC 2022. [DOI: 10.1515/ipp-2000-0008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this paper, the viscoplastic material model of PET (polyethylene terephthalate), which is intended to be used in the FEM (finite element method) simulation of stretch blow molding process, has been studied. Material tests of PET were performed with the constant strain rates varying from 0.01 to 1 (1/s), at temperatures ranging from 90 to 150 °C, based on the obtained data a two-stage model was proposed. The proposed model could precisely take into account the effects of strain hardening, strain rate sensitivity, variation of the hardening index, and temperature dependency. This model has been implemented into the nonlinear finite element code PBLOW3D, which is developed in the Riken, and its performance in the stretch blow molding simulation has been studied. It has been demonstrated that the proposed material model provides significant improvements, compared with two existing material models, in the simulation of the blow molding process of PET bottles.
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Affiliation(s)
- S. Wang
- Materials Fabrication Laboratory, The Institute of Physical and Chemical Research , Riken, Waho-shi , Saitama , Japan
| | - A. Makinouchi
- Materials Fabrication Laboratory, The Institute of Physical and Chemical Research , Riken, Waho-shi , Saitama , Japan
| | - M. Okamoto
- Polymeric Materials Engineering, Toyota Technological Institute , Tokyo , Japan
| | - T. Kotaka
- Polymeric Materials Engineering, Toyota Technological Institute , Tokyo , Japan
| | - M. Maeshima
- Aoki Technical Laboratory, Inc. , Nagano-ken , Japan
| | - N. Ibe
- Aoki Technical Laboratory, Inc. , Nagano-ken , Japan
| | - T. Nakagawa
- Institute of Industrial Science, University of Tokyo , Tokyo , Japan
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Toyooka S, Osaki Y, Masuda H, Arai N, Miyamoto W, Ando S, Kawano H, Nakagawa T. Distribution of Coronal Plane Alignment of the Knee Classification in Patients with Knee Osteoarthritis in Japan. J Knee Surg 2022; 36:738-743. [PMID: 35114721 DOI: 10.1055/s-0042-1742645] [Citation(s) in RCA: 10] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Coronal plane alignment of the knee (CPAK) has recently been proposed as a simple and universal classification system to determine the suitability of a particular phenotype of the knee to a specific alignment strategy for knee replacement surgery. Although racial differences may affect knee alignment, there are no reports on the racial distribution of this classification system. We aimed to clarify the distribution of CPAK classification in patients with osteoarthritis who underwent total knee arthroplasty (TKA) in Japan. Consecutive patients who underwent primary TKA were analyzed retrospectively. The knees were categorized according to the CPAK classification system which comprised of two independent variables (arithmetic hip-knee-ankle [aHKA] angle and joint-line obliquity [JLO]) with three respective subgroups to create the following nine phenotypes of the knee: type I (varus aHKA and apex distal JLO), type II (neutral aHKA and apex distal JLO), type III (valgus aHKA and apex distal JLO), type IV (varus aHKA and neutral JLO), type V (neutral aHKA and neutral JLO), and type VI (valgus aHKA and neutral JLO), type VII (varus aHKA and apex proximal), type VIII (neutral aHKA and apex proximal), and type IX (valgus aHKA and apex proximal). The distribution of the phenotypes in the Japanese population was investigated as a primary outcome. To accurately compare the results with previous studies conducted on non-Japanese patients, a sex-matched distribution was investigated as a secondary outcome. A total of 570 knees were investigated of which 500 knees were examined after exclusions. The most common distribution was type I (53.8%), followed by type II (25.4%), type III (8.2%), type IV (7.2%), type V (4.4%), and type VI (1.0%). Types VII, VIII, and IX were not distributed. The sex-matched distribution was nearly identical to the overall distribution in Japan. The majority of patients with knee osteoarthritis in Japan had medially tilted joints with constitutional varus alignment.
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Affiliation(s)
- Seikai Toyooka
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Yutoshi Osaki
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Hironari Masuda
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Noriaki Arai
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Wataru Miyamoto
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Shuji Ando
- Department of Information and Computer Technology, Faculty of Engineering, Tokyo University of Science, Tokyo, Japan
| | - Hirotaka Kawano
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
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Munakata K, Miyashita H, Nakahara T, Shiba H, Sugahara K, Katakura A, Nakagawa T. The use of SPECT/CT to assess resorptive activity in mandibular condyles. Int J Oral Maxillofac Surg 2021; 51:942-948. [PMID: 34937677 DOI: 10.1016/j.ijom.2021.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/30/2021] [Accepted: 11/26/2021] [Indexed: 12/20/2022]
Abstract
The aim of this study was to clarify the clinical significance of bone metabolism in the mandibular condyles in determining condylar resorptive changes. Twelve condyles of patients with idiopathic condylar resorption and degenerative joint disease were analysed using 99mTc HMDP SPECT/CT at baseline and subsequent computed tomography during the follow-up period. Twenty-two healthy condyles were enrolled as controls. After generating three-dimensional SPECT/CT images, two independent observers scored the degree of condylar uptake and measured the morphological changes in the condylar height and condylar volume. In the group with positive condylar uptake, the follow-up computed tomography showed significant decreases in condylar height (-1.69 ± 0.93 mm) and condylar volume (-12.51 ± 10.30%) when compared to healthy controls (condylar height, 0.09 ± 0.54 mm; condylar volume, -0.29 ± 4.22%) (P < 0.001). Moreover, the degree of uptake correlated with the changes in condylar height (observer 1, P = 0.012; observer 2, P = 0.039) and condylar volume (observer 1, P = 0.005; observer 2, P = 0.037). These results suggest that condylar bone metabolism is closely related to the resorptive activity. Thus, SPECT/CT would be useful in the prognostic evaluation or determination of treatment strategies for idiopathic condylar resorption and degenerative joint disease.
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Affiliation(s)
- K Munakata
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Miyashita
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.
| | - T Nakahara
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | - H Shiba
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Sugahara
- Department of Oral Pathobiological Science and Surgery, Tokyo Dental College, Tokyo, Japan
| | - A Katakura
- Department of Oral Pathobiological Science and Surgery, Tokyo Dental College, Tokyo, Japan
| | - T Nakagawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
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Maeda T, Hiura A, Uehara J, Toyoshima R, Nakagawa T, Yoshino K. Early tumor response assessment may avoid serious immune-related adverse events in nivolumab and ipilimumab combination therapy for stage IV melanoma. Br J Dermatol 2021; 186:587-588. [PMID: 34747503 DOI: 10.1111/bjd.20879] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/16/2021] [Accepted: 11/07/2021] [Indexed: 11/28/2022]
Abstract
Nivolumab and ipilimumab combination therapy is one of the most promising treatments for patients with melanoma. However, this combination therapy is highly toxic and causes serious adverse events (SAEs) in more than half of the patients.
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Affiliation(s)
- T Maeda
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - A Hiura
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - J Uehara
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - R Toyoshima
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - T Nakagawa
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - K Yoshino
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
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Katada S, Takouda J, Nakagawa T, Honda M, Igarashi K, Imamura T, Ohkawa Y, Sato S, Kurumizaka H, Nakashima K. Neural stem/precursor cells dynamically change their epigenetic landscape to differentially respond to BMP signaling for fate switching during brain development. Genes Dev 2021; 35:1431-1444. [PMID: 34675062 PMCID: PMC8559679 DOI: 10.1101/gad.348797.121] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/28/2021] [Indexed: 11/24/2022]
Abstract
In this study, Katada et al. investigated NPC fate regulation and, using multiple genome-wide analyses, they demonstrate that Smads, transcription factors that act downstream from BMP signaling, target dramatically different genomic regions in neurogenic and gliogenic NPCs. Their results show the regulation of NPC property change mediated by the interplay between cell-extrinsic cues and -intrinsic epigenetic programs during cortical development. During neocortical development, tight regulation of neurogenesis-to-astrogenesis switching of neural precursor cells (NPCs) is critical to generate a balanced number of each neural cell type for proper brain functions. Accumulating evidence indicates that a complex array of epigenetic modifications and the availability of extracellular factors control the timing of neuronal and astrocytic differentiation. However, our understanding of NPC fate regulation is still far from complete. Bone morphogenetic proteins (BMPs) are renowned as cytokines that induce astrogenesis of gliogenic late-gestational NPCs. They also promote neurogenesis of mid-gestational NPCs, although the underlying mechanisms remain elusive. By performing multiple genome-wide analyses, we demonstrate that Smads, transcription factors that act downstream from BMP signaling, target dramatically different genomic regions in neurogenic and gliogenic NPCs. We found that histone H3K27 trimethylation and DNA methylation around Smad-binding sites change rapidly as gestation proceeds, strongly associated with the alteration of accessibility of Smads to their target binding sites. Furthermore, we identified two lineage-specific Smad-interacting partners—Sox11 for neurogenic and Sox8 for astrocytic differentiation—that further ensure Smad-regulated fate-specific gene induction. Our findings illuminate an exquisite regulation of NPC property change mediated by the interplay between cell-extrinsic cues and -intrinsic epigenetic programs during cortical development.
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Affiliation(s)
- Sayako Katada
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Jun Takouda
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takumi Nakagawa
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Mizuki Honda
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Katsuhide Igarashi
- Institute for Advanced Life Sciences, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Takuya Imamura
- Program of Biomedical Science, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Yasuyuki Ohkawa
- Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
| | - Shoko Sato
- Laboratory of Chromatin Structure and Function, Institute for Quantitative Biosciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan
| | - Hitoshi Kurumizaka
- Laboratory of Chromatin Structure and Function, Institute for Quantitative Biosciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan
| | - Kinichi Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan
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Nakagawa T, Fukuhara T, Imai K, Igusa R, Yokota H, Watanabe K, Suzuki A, Morita M, Inoue A, Miura M, Minamiya Y, Maemondo M. FP05.05 A Prospective Observational Study of Osimertinib Using Plasma Concentrations in NSCLC With Acquired EGFR T790M Mutation. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.222] [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: 11/26/2022]
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15
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Clemens P, Connolly A, Harper A, Mah J, McDonald C, Rao V, Smith E, Zaidman C, Nakagawa T, Hoffman E. DMD - TREATMENT. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.165] [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]
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16
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Maeda T, Hiura A, Uehara J, Toyoshima R, Nakagawa T, Yoshino K. Combined carboplatin and paclitaxel therapy improves overall survival in patients with nivolumab-resistant acral and mucosal melanoma. Br J Dermatol 2021; 186:361-363. [PMID: 34510408 DOI: 10.1111/bjd.20758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 08/15/2021] [Accepted: 09/08/2021] [Indexed: 01/02/2023]
Affiliation(s)
- T Maeda
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - A Hiura
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - J Uehara
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - R Toyoshima
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - T Nakagawa
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - K Yoshino
- Department of Dermatologic Oncology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
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17
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Takeuchi H, Matsumoto T, Morimoto K, Atsumi J, Yamamoto S, Nakagawa T, Yamada S, Kurosaki A, Shiraishi Y, Hasebe T. Pre-operative endovascular coil embolisation for chronic pulmonary aspergillosis. Int J Tuberc Lung Dis 2021; 25:725-731. [PMID: 34802494 DOI: 10.5588/ijtld.21.0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE: To retrospectively evaluate the clinical outcomes of pre-operative endovascular coil embolisation (ECE) for chronic pulmonary aspergillosis (CPA).METHODS: We evaluated surgical patients with CPA between November 2016 and April 2020. Pre-operative ECE for CPA with severe adhesions was selectively performed to reduce intra-operative blood loss. ECE procedures, operative procedures, intra-operative blood loss and complications were evaluated.RESULTS: Twenty-eight patients (21 males and 7 females; median age: 55 years) were included in the study. Of the 28 patients, 8 (28.6%) underwent pre-operative ECE. Technical success rate in pre-operative ECE was 100%. The median time required for ECE procedures was 123 min. The median number of vessels embolised per procedure was 2.5. The median period between embolisation and surgery was 5 days. Major complications were observed in three patients (10.7%). There were no significant differences between patients with and without pre-operative ECE in operative time (284 vs. 365 min, respectively, P = 0.7602) and intra-operative blood loss (294 vs. 228 mL, respectively, P = 0.8987).CONCLUSIONS: Pre-operative ECE for CPA appears to be feasible and safe; however, its role in reducing intra-operative blood loss needs further investigation.
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Affiliation(s)
- H Takeuchi
- Department of Diagnostic Radiology, Fukujuji Hospital, Japan Anti-Tuberculosis Association (JATA), Tokyo, Japan
| | - T Matsumoto
- Kochi Medical School, Kochi University, Kochi, Japan, Department of Radiology, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
| | - K Morimoto
- Respiratory Disease Center, Fukujuji Hospital, JATA, Tokyo, Japan
| | - J Atsumi
- Respiratory Disease Center, Fukujuji Hospital, JATA, Tokyo, Japan
| | - S Yamamoto
- Department of Radiology, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
| | - T Nakagawa
- Department of General Thoracic Surgery, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
| | - S Yamada
- Department of General Thoracic Surgery, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
| | - A Kurosaki
- Department of Diagnostic Radiology, Fukujuji Hospital, Japan Anti-Tuberculosis Association (JATA), Tokyo, Japan
| | - Y Shiraishi
- Respiratory Disease Center, Fukujuji Hospital, JATA, Tokyo, Japan
| | - T Hasebe
- Department of Radiology, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
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18
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Toyooka S, Masuda H, Nishihara N, Kobayashi T, Miyamoto W, Ando S, Kawano H, Nakagawa T. Postoperative laxity of the lateral soft tissue is largely negligible in total knee arthroplasty for varus osteoarthritis. J Orthop Surg (Hong Kong) 2021; 29:23094990211002002. [PMID: 33787403 DOI: 10.1177/23094990211002002] [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: 11/15/2022] Open
Abstract
PURPOSE To evaluate the integrity of lateral soft tissue in varus osteoarthritis knee by comparing the mechanical axis under varus stress during navigation-assisted total knee arthroplasty before and after compensating for a bone defect with the implant. METHODS Sixty-six knees that underwent total knee arthroplasty were investigated. The mechanical axis of the operated knee was evaluated under manual varus stress immediately after knee exposure and after navigation-assisted implantation. The correlation between each value of the mechanical axis and degree of preoperative varus deformity was compared by regression analysis. RESULTS The maximum mechanical axis under varus stress immediately after knee exposure increased in proportion to the degree of preoperative varus deformity. Moreover, the maximum mechanical axis under varus stress after implantation increased in proportion to the degree of preoperative varus deformity. Therefore, the severity of varus knee deformity leads to a progressive laxity of the lateral soft tissue. However, regression coefficients after implantation were much smaller than those measured immediately after knee exposure (0.99 vs 0.20). Based on the results of the regression formula, the postoperative laxity of the lateral soft tissue was negligible, provided that an appropriate thickness of the implant was compensated for the bone and cartilage defect in the medial compartment without changing the joint line. CONCLUSION The severity of varus knee deformity leads to a progressive laxity of the lateral soft tissue. However, even if the degree of preoperative varus deformity is severe, most cases may not require additional procedures to address the residual lateral laxity.
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Affiliation(s)
- Seikai Toyooka
- Department of Orthopaedic Surgery, 13094Teikyo University School of Medicine, Tokyo, Japan
| | - Hironari Masuda
- Department of Orthopaedic Surgery, 13094Teikyo University School of Medicine, Tokyo, Japan
| | - Nobuhiro Nishihara
- Department of Orthopaedic Surgery, 13094Teikyo University School of Medicine, Tokyo, Japan
| | - Takashi Kobayashi
- Department of Orthopaedic Surgery, 13094Teikyo University School of Medicine, Tokyo, Japan
| | - Wataru Miyamoto
- Department of Orthopaedic Surgery, 13094Teikyo University School of Medicine, Tokyo, Japan
| | - Shuji Ando
- Department of Information Engineering, 13094Tokyo University of Science, Tokyo, Japan
| | - Hirotaka Kawano
- Department of Orthopaedic Surgery, 13094Teikyo University School of Medicine, Tokyo, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, 13094Teikyo University School of Medicine, Tokyo, Japan
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19
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Tanaka T, Mizuno T, Nakagawa T, Hayakawa T, Shimada M. Effects of H3 and H4 histones acetylation and bindings of CREB binding protein and p300 at the promoter on hepatic expression of gamma-glutamyltransferase gene in a streptozotocin-induced moderate hypoinsulinemic rat model. Physiol Res 2021; 70:475-480. [PMID: 33982587 DOI: 10.33549/physiolres.934620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Gamma-glutamyltransferase (GGT), a marker of liver disease, has been shown to be associated with increased risk of diabetes and relative insulin secretion deficiency. However, the mechanism of hepatic Ggt regulation has not been explored fully. In this study, we made a concerted effort to understand the mechanism by investigating the effects of acetylation of histones H3 and H4, and bindings of histone acetyltransferases, CREB binding protein (CBP) and p300, at the Ggt promoter on the regulation of the expression of Ggt gene in the livers of streptozotocin (STZ)-induced moderate hypoinsulinemia rat model. The rats treated with STZ showed remarkably higher serum GGT level and hepatic Ggt/GGT expression than the untreated control rats. Furthermore, the acetylation of histones H3 and H4, and the binding of CBP not p300 at the Ggt promoter regions were significantly higher in the livers of STZ rats than those of the control rats. These results suggest that an enhanced hepatic expression of Ggt is associated with increased acetylation of histones H3 and H4 and CBP binding at the Ggt promoter in STZ-induced moderate hypoinsulinemic rats.
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Affiliation(s)
- T Tanaka
- Department of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan.
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20
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Koan I, Nakagawa T, Chen C, Matsubara T, Lei H, Hagiwara K, Hirotsu M, Yamagata H, Nakagawa S. The Negative Association Between Positive Psychological Wellbeing and Loss Aversion. Front Psychol 2021; 12:641340. [PMID: 33815226 PMCID: PMC8012665 DOI: 10.3389/fpsyg.2021.641340] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/22/2021] [Indexed: 11/13/2022] Open
Abstract
When making decisions, people tend to overweigh the impact of losses compared to gains, a phenomenon known as loss aversion (LA). A moderate amount of LA may be adaptive as it is necessary for protecting oneself from danger. However, excessive LA may leave people few opportunities and ultimately lead to suboptimal outcomes. Despite frequent reports of elevated LA in specific populations such as patients with depression, little is known about what psychological characteristics are associated with the tendency of LA. Based on the neurobiological studies of LA, we hypothesized that positive psychological wellbeing may be negatively associated with people's tendency of LA. In the present study, we set out to test this hypothesis in a sample of young adults. We evaluated LA using a decision-making task in which subjects were asked to decide whether to accept or reject a series of coin-toss gambles. Our results revealed that individuals with more advanced personal growth as assessed by the Ryff's Psychological Well-being Inventory showed reduced LA. To our knowledge, this is the first report demonstrating an association between positive psychological wellbeing and LA. These findings suggest that personal growth might be employed as interventional targets for correcting excessive LA in vulnerable populations.
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Affiliation(s)
- Ibuki Koan
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takumi Nakagawa
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Chong Chen
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Toshio Matsubara
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Huijie Lei
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Kosuke Hagiwara
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Masako Hirotsu
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Hirotaka Yamagata
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shin Nakagawa
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Japan
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21
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Toyooka S, Shimazaki N, Yasui Y, Ando S, Saho Y, Nakagawa T, Kawano H, Miyamoto W. Validity of a simple footprint assessment board for diagnosing the severity of flatfoot: a prospective cohort study. BMC Musculoskelet Disord 2021; 22:285. [PMID: 33736625 PMCID: PMC7977274 DOI: 10.1186/s12891-021-04154-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/05/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A simple, non-quantitative, and cost-effective diagnostic tool would enable the diagnosis of flatfoot without need for specialized training. A simple footprint assessment board that investigates which toe the cord passes through from the centre point of the heel to the most lateral point of the medial contour of the footprint has been developed to assess flatfoot. The purpose of this study was to verify the validity of a simple footprint assessment board for flatfoot. METHODS Thirty-five consecutive patients with foot pain, foot injury, or any associated symptoms who underwent computed tomography (CT) were analysed prospectively. At the time of the CT scan, a footprint analysis using a simple footprint assessment board was performed. The navicular index, tibiocalcaneal angle, and calcaneal inclination angle were evaluated by CT to assess flat feet. These three criteria were compared to those evaluated with the simple footprint assessment board by regression analysis. In addition, the same analysis was conducted separately for young, middle-aged, and older patients in order to investigate each age group. RESULTS The navicular index and tibiocalcaneal angle generally decreased as the score of the simple footprint assessment board increased. Calcaneal inclination angle generally increased as the score of the simple footprint assessment board increased. As the scores of the simple footprint assessment board decreased by approaching the great toe, the navicular index and tibiocalcaneal angle were higher and calcaneal inclination angle was lower, which is indicative of a higher likelihood of flatfoot. The scores derived from the simple footprint assessment board was correlated with these three criteria measured by CT, not only when the result of simple footprint assessment board was set as a non-continuous variable but also when the result was set as a continuous variable. The results of the age-stratified survey were similar for all groups. CONCLUSIONS The findings of this study suggest that a simple footprint assessment board can be potentially useful to detect flatfoot. TRIAL REGISTRATION Retrospectively registered.
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Affiliation(s)
- Seikai Toyooka
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Naoya Shimazaki
- Department of Orthopaedic Surgery, Shimazaki Hospital, Ibaraki, Japan
| | - Youichi Yasui
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Shuji Ando
- Department of Information Engineering, Tokyo University of Science, Tokyo, Japan
| | - Yasuaki Saho
- Faculty of Medical Technology, Teikyo University Institute of Sports Science and Medicine, Tokyo, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Hirotaka Kawano
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Wataru Miyamoto
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan.
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Saito R, Tsubata Y, Nakamura A, Yoshioka H, Morita M, Honda R, Kanaji N, Watanabe M, Jingu D, Nakagawa T, Nakazawa K, Mouri A, Takeuchi S, Furuya N, Akazawa Y, Miura K, Ichihara E, Kobayashi K, Morita S, Isobe T. P76.79 Osimertinib in Poor PS Patients with T790M-Positive Advanced NSCLC after Progression of EGFR TKI Treatments (NEJ032B). J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1136] [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: 11/29/2022]
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23
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Bekki N, Hayama H, Nagai R, Miyake W, Yamamoto J, Torii S, Kubota S, Nakagawa T, Okazaki T, Yamamoto M, Okazaki O, Hara H, Hiroi Y. Left atrial strain and outcome in heart failure with preserved ejection fraction. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Left atrial (LA) function is impaired in heart failure with preserved ejection fraction (HFpEF). However, the association between LA longitudinal strain and heart failure (HF) events in patients with HFpEF is still unknown. We evaluated whether LA strain measurements would be useful to predict hospitalizations for worsening HF in this study.
Methods
This study included 121 patients (Male 73, Female 48) with HFpEF who had echocardiogram at our institute (Age = 76 ± 14y, Left ventricular ejection fraction; LVEF = 63 ± 8%). Patients with atrial fibrillation were excluded. LA longitudinal strain was measured by speckle-tracking echocardiography, using TOMTEC imaging system. The endpoints were hospitalizations for worsening HF.
Results
During follow-up period of 319 ± 269 days, 33 patients (27%) experienced hospitalizations for worsening HF. LA strain was markedly lower in patients with HF events at 11.3 ± 5.6, whereas LA strain was higher at 20.3 ± 10.1 in patients without HF events. Kaplan-Meier analysis demonstrated a significant separation of survival curves stratified by median value of LA strain (Figure).
Conclusions
LA dysfunction in HFpEF is associated with a higher risk of HF hospitalization, and LA strain measurements would be useful to predict HF events.
Abstract Figure
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Affiliation(s)
- N Bekki
- National Center for Global Health and Medicine, Tokyo, Japan
| | - H Hayama
- National Center for Global Health and Medicine, Tokyo, Japan
| | - R Nagai
- National Center for Global Health and Medicine, Tokyo, Japan
| | - W Miyake
- National Center for Global Health and Medicine, Tokyo, Japan
| | - J Yamamoto
- National Center for Global Health and Medicine, Tokyo, Japan
| | - S Torii
- National Center for Global Health and Medicine, Tokyo, Japan
| | - S Kubota
- National Center for Global Health and Medicine, Tokyo, Japan
| | - T Nakagawa
- National Center for Global Health and Medicine, Tokyo, Japan
| | - T Okazaki
- National Center for Global Health and Medicine, Tokyo, Japan
| | - M Yamamoto
- National Center for Global Health and Medicine, Tokyo, Japan
| | - O Okazaki
- National Center for Global Health and Medicine, Tokyo, Japan
| | - H Hara
- National Center for Global Health and Medicine, Tokyo, Japan
| | - Y Hiroi
- National Center for Global Health and Medicine, Tokyo, Japan
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24
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Shinada M, Saeki K, Yoshitake R, Eto S, Tsuboi M, Chambers JK, Uchida K, Kato D, Yoshimoto S, Kamoto S, Ikeda N, Kinoshita R, Fujita N, Nishimura R, Nakagawa T. Evaluation of epithelial and mesenchymal cell markers in canine urinary bladder transitional cell carcinoma. Vet J 2020; 266:105571. [PMID: 33323173 DOI: 10.1016/j.tvjl.2020.105571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 12/31/2019] [Revised: 10/21/2020] [Accepted: 11/03/2020] [Indexed: 02/07/2023]
Abstract
Canine transitional cell carcinoma (cTCC) is the most common malignant tumour in the urinary bladder: it is highly invasive and exhibits metastatic characteristics. Inflammation is also strongly related to cTCC. Epithelial tumours often exhibit a mesenchymal cell phenotype during tumour invasion and metastasis owing to epithelial-mesenchymal transition (EMT), which is often induced in chronic inflammation. The aim of this retrospective study was to investigate the expression of epithelial and mesenchymal cell markers in tumour cells and to evaluate its relationship with prognosis of cTCC. In this study, 29 dogs with cTCC who underwent surgical treatment were enrolled. Clinical parameters were reviewed using medical records. Tissue expression of epithelial and mesenchymal markers was evaluated by immunohistochemical analysis. The association between the expression of mesenchymal cell markers and clinical parameters, including prognosis, was statistically examined. In five normal bladder tissues used as controls, no expression of mesenchymal markers was observed, except for one tissue that expressed fibronectin. Conversely, epithelial tumour cells expressed vimentin and fibronectin in 23/29 and 19/28 cTCC tissues, respectively. Regarding clinical parameters, vimentin score in Miniature Dachshunds was significantly higher than those in other dog breeds (P < 0.001). Multivariate survival analyses revealed that age>12 years was related to shorter progression-free survival (P = 0.02). Higher vimentin score, lower fibronectin score, and advanced clinical T stage were significantly correlated with shorter median survival time (P < 0.05). The results of this study indicate that vimentin expression was associated with cTCC progression. Further studies are needed to examine the incidence and relevance of EMT in cTCC.
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Affiliation(s)
- M Shinada
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Saeki
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
| | - R Yoshitake
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - S Eto
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - M Tsuboi
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-Ku, Tokyo 113-8657, Japan
| | - J K Chambers
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-Ku, Tokyo 113-8657, Japan
| | - K Uchida
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-Ku, Tokyo 113-8657, Japan
| | - D Kato
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - S Yoshimoto
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - S Kamoto
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - N Ikeda
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - R Kinoshita
- Veterinary Medical Center, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-Ku, Tokyo 113-8657, Japan
| | - N Fujita
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - R Nishimura
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - T Nakagawa
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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Fujii Y, Sato Y, Suzuki H, Yoshizato T, Yoshida K, Shiraishi Y, Kawai T, Nakagawa T, Nishimatsu H, Okaneya T, Makishima H, Homma Y, Miyano S, Ogawa S, Kume H. Distinct molecular subtypes and a high diagnostic urinary biomarker of upper urinary tract urothelial carcinoma. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34078-7] [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: 11/29/2022] Open
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26
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Daiko H, Marafioti T, Fujiwara T, Shirakawa Y, Nakatsura T, Kato K, Puccio I, Hikichi T, Yoshimura S, Nakagawa T, Furukawa M, Stoeber K, Nagira M, Ide N, Kojima T. Exploratory open-label clinical study to determine the S-588410 cancer peptide vaccine-induced tumor-infiltrating lymphocytes and changes in the tumor microenvironment in esophageal cancer patients. Cancer Immunol Immunother 2020; 69:2247-2257. [PMID: 32500232 PMCID: PMC7568713 DOI: 10.1007/s00262-020-02619-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 05/20/2020] [Indexed: 12/24/2022]
Abstract
Cancer vaccines induce cancer-specific T-cells capable of eradicating cancer cells. The impact of cancer peptide vaccines (CPV) on the tumor microenvironment (TME) remains unclear. S-588410 is a CPV comprising five human leukocyte antigen (HLA)-A*24:02-restricted peptides derived from five cancer testis antigens, DEPDC1, MPHOSPH1, URLC10, CDCA1 and KOC1, which are overexpressed in esophageal cancer. This exploratory study investigated the immunologic mechanism of action of subcutaneous S-588410 emulsified with MONTANIDE ISA51VG adjuvant (median: 5 doses) by analyzing the expression of immune-related molecules, cytotoxic T-lymphocyte (CTL) response and T-lymphocytes bearing peptide-specific T-cell receptor (TCR) sequencing in tumor tissue or blood samples from 15 participants with HLA-A*24:02-positive esophageal cancer. Densities of CD8+, CD8+ Granzyme B+, CD8+ programmed death-1-positive (PD-1+) and programmed death-ligand 1-positive (PD-L1+) cells were higher in post- versus pre-vaccination tumor tissue. CTL response was induced in all patients for at least one of five peptides. The same sequences of peptide-specific TCRs were identified in post-vaccination T-lymphocytes derived from both tumor tissue and blood, suggesting that functional peptide-specific CTLs infiltrate tumor tissue after vaccination. Twelve (80%) participants had treatment-related adverse events (AEs). Injection site reaction was the most frequently reported AE (grade 1, n = 1; grade 2, n = 11). In conclusion, S-588410 induces a tumor immune response in esophageal cancer. Induction of CD8+ PD-1+ tumor-infiltrating lymphocytes and PD-L1 expression in the TME by vaccination suggests S-588410 in combination with anti-PD-(L)1 antibodies may offer a clinically useful therapy.Trial registration UMIN-CTR registration identifier: UMIN000023324.
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Affiliation(s)
- H Daiko
- Esophageal Surgery Division, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
| | - T Marafioti
- Department of Cellular Pathology, University College London Hospital, London, UK
| | - T Fujiwara
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Shirakawa
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Nakatsura
- Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - K Kato
- Gastrointestinal Medical Oncology Division, National Cancer Center Hospital, Tokyo, Japan
| | - I Puccio
- Department of Cellular Pathology, University College London Hospital, London, UK
| | - T Hikichi
- R&D Department, Cancer Precision Medicine, Inc., Kawasaki, Japan
| | - S Yoshimura
- R&D Department, Cancer Precision Medicine, Inc., Kawasaki, Japan
| | - T Nakagawa
- Drug Discovery and Disease Research Laboratory, Shionogi & Co., Ltd., Toyonaka, Japan
| | - M Furukawa
- Biostatistics Department, Shionogi & Co., Ltd., Osaka, Japan
| | - K Stoeber
- Business Development, Shionogi & Co., Ltd., London, UK
| | - M Nagira
- Drug Discovery and Disease Research Laboratory, Shionogi & Co., Ltd., Toyonaka, Japan
| | - N Ide
- Project Management Department, Shionogi & Co., Ltd., Osaka, Japan
| | - T Kojima
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
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Toyooka S, Masuda H, Nishihara N, Shimazaki N, Ando S, Kawano H, Nakagawa T. Tomosynthesis Is Equivalent to Computed Tomography for Evaluating Osseous Integration After Anterior Cruciate Ligament Reconstruction. Arthrosc Sports Med Rehabil 2020; 2:e105-e112. [PMID: 32368746 PMCID: PMC7190547 DOI: 10.1016/j.asmr.2019.11.006] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 11/25/2019] [Indexed: 11/25/2022] Open
Abstract
Purpose To compare tomosynthesis and computed tomography (CT) for evaluating bone plug integration after anterior cruciate ligament (ACL) reconstruction with a bone–patellar tendon–bone (BPTB) graft. Methods Data of consecutive adult patients who underwent ACL reconstruction with BPTB were analyzed. Bone integration between the bone plug and bone tunnel was evaluated by tomosynthesis and CT, which were both performed 3 months postoperatively. The obtained data for both modalities were reconstructed with slice thickness of 2 mm. Evaluation of bone integration were separately performed using coronal- and sagittal-reconstructed images for the femur and tibia. The ratio of bone integration between the reconstructed slices in which bone grafting was involved, for both tomosynthesis and CT, was investigated by 2 blinded examiners. The equivalence of tomosynthesis to CT was tested by comparing the bone integration ratio for both modalities. The accuracy of diagnosing bone union using tomosynthesis and CT was also investigated. Results The diagnostic accuracy of tomosynthesis and CT exceeded 80%. Interobserver agreement of bone integration in the sagittal plane on the femoral side was 0.92 (intraclass correlation coefficient) for CT and 0.76 (intraclass correlation coefficient) for tomosynthesis. Conclusions Although it showed poor reliability, tomosynthesis was equivalent to CT in evaluating bone plug integration after ACL reconstruction with BPTB. Level of Evidence Level II, diagnostic study.
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Affiliation(s)
- Seikai Toyooka
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Hironari Masuda
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Nobuhiro Nishihara
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Naoya Shimazaki
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Shuji Ando
- Department of Information and Computer Technology Faculty of Engineering, Tokyo University of Science, Tokyo, Japan
| | - Hirotaka Kawano
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan
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Taketomi S, Inui H, Yamagami R, Kawaguchi K, Nakazato K, Kono K, Kawata M, Nakagawa T, Tanaka S. Length of the Tendon within the Tibial Tunnel Affects Tibial Tunnel Widening following Anatomic Anterior Cruciate Ligament Reconstruction Using a Bone-Patellar Tendon-Bone Graft. J Knee Surg 2020; 33:445-451. [PMID: 30836394 DOI: 10.1055/s-0039-1681064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The purpose of this study was to retrospectively investigate the effects of variations in the length of the tendon within the tibial tunnel on tunnel widening (TW) following anatomical anterior cruciate ligament (ACL) reconstruction using a bone-patellar tendon-bone (BTB) graft. In total, 68 patients who underwent isolated ACL reconstructions using BTB grafts were included in this study. The patients were divided into two groups according to the length of the tendon within the tibial tunnel: group S (n = 30; tendon length, < 10 mm) and group L (n = 38; tendon length, ≥ 10 mm). Tunnel aperture area was measured using three-dimensional computed tomography (3D CT) at 1 week and 1 year postoperatively, and tibial TW (%) was calculated. The correlation coefficient between the length of the tendon within the tibial tunnel and tibial TW was also calculated. Clinical assessment was performed 1 year postoperatively, corresponding to the period of CT assessment, which involved the evaluation of the Lysholm's score, measurement of anterior knee stability using a KneeLax3 arthrometer, and the pivot-shift test. A weak positive correlation was observed between the length of the tendon within the tibial tunnel and tibial TW (r = 0.270, p = 0.026). Mean tibial tunnel aperture area increased by 19.3 ± 17.4% and 35.8 ± 25.4% in the groups S and L, respectively. TW in the group L was significantly greater than that in the group S (p = 0.004). No significant difference was observed between the two groups in any clinical outcomes. In conclusion, a longer tendinous portion within the tibial tunnel resulted in a greater tibial TW following anatomical ACL reconstructions using a BTB graft.
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Affiliation(s)
- Shuji Taketomi
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Inui
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ryota Yamagami
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kohei Kawaguchi
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Keiu Nakazato
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kenichi Kono
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Manabu Kawata
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, Teikyo University, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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Yamashita K, Ogihara T, Hayashi M, Nakagawa T, Ishizaki Y, Kume M, Yano I, Niigata R, Hiraoka J, Yasui H, Nakamura T. Association between dexamethasone treatment and alterations in serum concentrations of trace metals. Pharmazie 2020; 75:218-222. [PMID: 32393433 DOI: 10.1691/ph.2020.0341] [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] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Previously, a significant elevation in the serum levels of iron (Fe) was observed within a few days after the initiation of cisplatin (CDDP)-based chemotherapy. To clarify the underlying mechanisms, the serum concentration of hepcidin, a negative regulator of Fe release, was determined in the clinical samples obtained from six patients with cancer. The result showed that the serum concentration of hepcidin in patients receiving CDDP-based chemotherapy was significantly increased after 4-6 days of treatment, in comparison to the baseline level, suggesting that aforementioned excessive systemic Fe was not explained by the change of serum hepcidin level. All these patients received antiemetic premedication. We next evaluated of the effects of Pt-containing drugs and prophylactic antiemetic dexamethasone medication on the serum concentration of trace metals in mice, and on the hepatic and renal concentration of trace metals. The serum concentrations of Fe, Cu, and Zn in the CDDP-treated and oxaliplatin-treated mice were not significantly altered in comparison to those of the vehicle-treated control group. The serum concentrations of Fe, Cu, and Zn were increased after 24 h of dexamethasone treatment, compared to those of the control group (P < 0.05). The hepatic concentration of Mn was significantly reduced, whereas those of Fe and Cu inclined to diminish. The present findings suggest that dexamethasone can partly contribute to the changes in the serum concentrations of trace metals during anticancer chemotherapy.
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Affiliation(s)
- K Yamashita
- Department of Pharmacy, Kobe University Hospital, Kobe, Japan
| | - T Ogihara
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, Kyoto, Japan
| | - M Hayashi
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, Kyoto, Japan
| | - T Nakagawa
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, Kyoto, Japan
| | - Y Ishizaki
- Education and Research Center for Clinical Pharmacy, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - M Kume
- Department of Pharmacy, Kobe University Hospital, Kobe, Japan
| | - I Yano
- Department of Pharmacy, Kobe University Hospital, Kobe, Japan
| | - R Niigata
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto, Japan
| | - J Hiraoka
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto, Japan
| | - H Yasui
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto, Japan
| | - T Nakamura
- Education and Research Center for Clinical Pharmacy, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan;,
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Toyooka S, Ito M, Kakinuma A, Kayama S, Watanabe K, Miyamoto W, Nakagawa T, Kawano H. Periarticular multimodal drug injection does not improves early postoperative analgesia compared with continuous interscalene brachial plexus block after arthroscopic rotator cuff repair: A retrospective single-center comparative study. J Orthop Sci 2020; 25:405-409. [PMID: 31153741 DOI: 10.1016/j.jos.2019.04.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 04/23/2019] [Accepted: 04/29/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Although continuous interscalene brachial plexus block (CISBPB) is common method in pain management following arthroscopic rotator cuff repair (ARCR), little is known about the analgesic effects of periarticular multimodal drug injection (PMDI) for ARCR. This retrospective study sought to clarify which technique could provide the best analgesic effect after ARCR. METHODS We retrospectively reviewed consecutive patients who underwent ARCR performed by the same surgeon at our institution between June 2016 and November 2017. Patients who underwent surgery before January 2017 received CISBPB and those who underwent surgery after February 2017 received PMDI for postoperative pain control. Both treatment groups also received fentanyl by intravenous patient-controlled analgesia (IV-PCA). Postoperative pain was evaluated by visual analog scale (VAS) pain scores at 3, 6, 12, 24, and 48 h and need for IV-PCA at 8, 16, and 24 h. RESULTS Twenty-eight patients received CISBPB and 21 received PMDI. According to the VAS scores, the postoperative analgesic effect was significantly better in the CISBPB group during the first 6 h (p < 0.05). Total fentanyl consumption by IV-PCA during the first 8 postoperative h was significantly greater in the PMDI group than in the CISBPB group. CONCLUSIONS PMDI does not improve early postoperative analgesia after ARCR compared with CISBPB. CISBPB had a significantly better analgesic effect in the first 8 h postoperatively. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Seikai Toyooka
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan.
| | - Masaaki Ito
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - Akihito Kakinuma
- Department of Anesthesia, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - Satoru Kayama
- Department of Anesthesia, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - Kazuyuki Watanabe
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - Wataru Miyamoto
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - Hirotaka Kawano
- Department of Orthopaedic Surgery, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan
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Cho J, Nakagawa T, Martin P, Gondo Y, Poon LW, Hirose N. Caregiving centenarians: Cross-national comparison in Caregiver-Burden between the United States and Japan. Aging Ment Health 2020; 24:774-783. [PMID: 30596257 PMCID: PMC6599484 DOI: 10.1080/13607863.2018.1544221] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Background and Objectives: The personal distress associated with caring for a family member has been well documented; however, questions about the burden of caregiving for centenarians and cross-national differences in the caregiving context, remain unanswered.Research Design and Methods: This study includes reports by caregivers of 538 near-centenarians and centenarians in the U.S. and Japan: 234 from the Georgia Centenarian Study and 304 from the Tokyo Centenarian Study. Basic descriptive and multivariate regression analyses were conducted. Mean levels of caregiver burden and near-centenarian and centenarians' characteristics (as predictors) for caregiver burden were compared between the U.S. and Japan. The near-centenarian and centenarians' functional capacity and personality were assessed as predictors.Results: Differential predictive patterns in caregiver burden were found in the two groups. In the U.S., near-centenarian and centenarians' agreeableness and conscientiousness were negatively associated with caregiver burden; whereas the near-centenarian and centenarians' neuroticism and number of diseases were positively associated with caregiver burden. In Japan, the near-centenarian and centenarians' activities of daily living, openness, and agreeableness were negatively associated with caregiving burden. Interaction effects between functional capacity and personality, on caregiver burden were observed only in the U.S. In the U.S., higher levels of agreeableness and openness significantly changed the level of caregiver burden associated with vision problems and a greater number of diseases.Discussion and Implications: Cross-national comparative predictors of caregiving burden between the two countries emphasized that caring for centenarians should be understood in the caregiving context, as well as the social context.
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Affiliation(s)
- J. Cho
- Center for Applied Health Research, Baylor Scott & White Health, Temple, Texas,Texas A&M Health Science Center School of Public Health, College Station, Texas
| | - T. Nakagawa
- University Priority Research Program “Dynamics of Healthy Aging,” University of Zurich, Switzerland,JSPS Postdoctoral Fellow for Research Abroad
| | - P. Martin
- Department of Human Development and Family Studies, Iowa State University, Ames, Iowa
| | - Y. Gondo
- Graduate School of Human Sciences, Osaka University, Osaka, Japan
| | - L. W. Poon
- Institute of Gerontology, University of Georgia, Athens, Georgia
| | - N. Hirose
- Center for Supercentenarian Research, School of Medicine, Keio University, Tokyo, Japan
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Nakagawa T, Wada Y, Katada S, Kishi Y. Epigenetic regulation for acquiring glial identity by neural stem cells during cortical development. Glia 2020; 68:1554-1567. [PMID: 32163194 DOI: 10.1002/glia.23818] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 02/09/2020] [Accepted: 03/02/2020] [Indexed: 12/16/2022]
Abstract
The nervous system consists of several hundred neuronal subtypes and glial cells that show specific gene expression and are generated from common ancestors, neural stem cells (NSCs). As the experimental techniques and molecular tools to analyze epigenetics and chromatin structures are rapidly advancing, the comprehensive events and genome-wide states of DNA methylation, histone modifications, and chromatin accessibility in developing NSCs are gradually being unveiled. Here, we review recent advances in elucidating the role of epigenetic and chromatin regulation in NSCs, especially focusing on the acquisition of glial identity and how epigenetic regulation enables the temporal regulation of NSCs during murine cortical development.
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Affiliation(s)
- Takumi Nakagawa
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshikuni Wada
- Laboratory of Molecular Biology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Sayako Katada
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yusuke Kishi
- Laboratory of Molecular Biology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
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Johnson RJ, Stenvinkel P, Andrews P, Sánchez-Lozada LG, Nakagawa T, Gaucher E, Andres-Hernando A, Rodriguez-Iturbe B, Jimenez CR, Garcia G, Kang DH, Tolan DR, Lanaspa MA. Fructose metabolism as a common evolutionary pathway of survival associated with climate change, food shortage and droughts. J Intern Med 2020; 287:252-262. [PMID: 31621967 PMCID: PMC10917390 DOI: 10.1111/joim.12993] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 09/16/2019] [Indexed: 12/12/2022]
Abstract
Mass extinctions occur frequently in natural history. While studies of animals that became extinct can be informative, it is the survivors that provide clues for mechanisms of adaptation when conditions are adverse. Here, we describe a survival pathway used by many species as a means for providing adequate fuel and water, while also providing protection from a decrease in oxygen availability. Fructose, whether supplied in the diet (primarily fruits and honey), or endogenously (via activation of the polyol pathway), preferentially shifts the organism towards the storing of fuel (fat, glycogen) that can be used to provide energy and water at a later date. Fructose causes sodium retention and raises blood pressure and likely helped survival in the setting of dehydration or salt deprivation. By shifting energy production from the mitochondria to glycolysis, fructose reduced oxygen demands to aid survival in situations where oxygen availability is low. The actions of fructose are driven in part by vasopressin and the generation of uric acid. Twice in history, mutations occurred during periods of mass extinction that enhanced the activity of fructose to generate fat, with the first being a mutation in vitamin C metabolism during the Cretaceous-Paleogene extinction (65 million years ago) and the second being a mutation in uricase that occurred during the Middle Miocene disruption (12-14 million years ago). Today, the excessive intake of fructose due to the availability of refined sugar and high-fructose corn syrup is driving 'burden of life style' diseases, including obesity, diabetes and high blood pressure.
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Affiliation(s)
- R J Johnson
- From the, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - P Stenvinkel
- Division of Renal Diseases, Karolinska Institute, Stockholm, Sweden
| | - P Andrews
- Museum of Natural History, London, UK
| | | | - T Nakagawa
- Department of Nephrology, Rakuwakai Otowa Hospital, Kyoto, Japan
| | - E Gaucher
- Department of Biology, Georgia State University, Atlanta, GA, USA
| | - A Andres-Hernando
- From the, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | - C R Jimenez
- From the, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - G Garcia
- From the, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - D-H Kang
- Division of Renal Diseases, Ewha University, Seoul, Korea
| | - D R Tolan
- Department of Biology, Boston University, Boson, MA, USA
| | - M A Lanaspa
- From the, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Uchiyama A, Nagatomo T, Higurashi Y, Ohnishi J, Komiyama M, Kumagai K, Fujimaki M, Yamauchi H, Tamura M, Kaneko K, Fukunishi N, Nakagawa T. Control system for the new RIKEN 28-GHz superconducting electron cyclotron resonance ion source for SRILAC. Rev Sci Instrum 2020; 91:025101. [PMID: 32113460 DOI: 10.1063/1.5129632] [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: 09/30/2019] [Accepted: 01/11/2020] [Indexed: 06/10/2023]
Abstract
A new RIKEN 28-GHz superconducting electron cyclotron resonance ion source (SC-ECRIS) has been installed for the superconducting RIKEN linear accelerator (SRILAC). The new SC-ECRIS control system mainly consists of programmable logic controllers (PLCs) embedded with the Experimental Physics and Industrial Control System. To improve the reliability as compared with previous control systems, two types of PLC central processing units, sequential and Linux, have been installed in the same unit. Past experience has shown that new types of designs that can rapidly respond to system scalability are key. By connecting PLC stations using star-topology field buses, their rapid and cost-effective response to system changes is realized for the new devices. Furthermore, a unique data acquisition system employing a 920-MHz-band radio was developed to measure analog data such as the temperature at the high-voltage stage.
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Affiliation(s)
- A Uchiyama
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nagatomo
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Higurashi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Ohnishi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Komiyama
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Kumagai
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Fujimaki
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Yamauchi
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - M Tamura
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - K Kaneko
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - N Fukunishi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nakagawa
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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Taguchi S, Nakagawa T, Fukuhara H. Inconsistencies in currently used definitions of sarcopenia in oncology. Ann Oncol 2020; 31:318-319. [DOI: 10.1016/j.annonc.2019.10.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 10/18/2019] [Indexed: 11/16/2022] Open
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Nagatomo T, Higurashi Y, Ohnishi J, Uchiyama A, Fujimaki M, Kumagai K, Fukunishi N, Sakamoto N, Nakagawa T, Kamigaito O. High intensity vanadium beam for synthesis of new superheavy elements with well-controlled emittance by using "slit triplet". Rev Sci Instrum 2020; 91:023318. [PMID: 32113411 DOI: 10.1063/1.5130431] [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: 10/03/2019] [Accepted: 01/12/2020] [Indexed: 06/10/2023]
Abstract
To provide a very powerful vanadium (V) beam with an intensity of at least 6 particle μA for synthesizing a new superheavy element (SHE) with atomic number Z = 119, we have developed a high-temperature oven (HTO) system to evaporate the metallic V powder inside the new superconducting (SC) electron cyclotron ion source. We successfully extracted a V13+ beam with a maximum beam intensity of 600 eμA with 2.8-kW microwave power and 900-W heating power of the HTO. Furthermore, from a systematic study of the dependence of the beam intensity on the microwave power and the HTO power, we successfully produced a V13+ beam of 300 eμA at a consumption rate of 3 mg/h, allowing a one-month duration continuous beam to carry out the SHE synthesis. In addition, to avoid serious damage to newly introduced SC acceleration cavities by beam losses, the beam should be transported with a well-controlled emittance. To efficiently limit the beam emittance, we employed a slit triplet consisting of three pairs of slits installed around the focus point of the low-energy beam transport. The first result of the emittance reduction was observed by a pepper-pot type emittance meter as a function of the acceptance of the slit triplet.
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Affiliation(s)
- T Nagatomo
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Higurashi
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Ohnishi
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - A Uchiyama
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Fujimaki
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Kumagai
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Fukunishi
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Sakamoto
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nakagawa
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - O Kamigaito
- Accelerator Group, RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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Nakagawa T, Koan I, Chen C, Matsubara T, Hagiwara K, Lei H, Hirotsu M, Yamagata H, Nakagawa S. Regular Moderate- to Vigorous-Intensity Physical Activity Rather Than Walking Is Associated with Enhanced Cognitive Functions and Mental Health in Young Adults. Int J Environ Res Public Health 2020; 17:ijerph17020614. [PMID: 31963639 PMCID: PMC7014044 DOI: 10.3390/ijerph17020614] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/10/2020] [Accepted: 01/14/2020] [Indexed: 01/21/2023]
Abstract
The beneficial effect of physical activity (PA) on the brain has been well established. Both acute and regular PA can boost a range of cognitive functions and enhance mood and mental health. Notably, the effect of acute PA on the brain and cognitive functions is generally found to be dose-dependent, in terms of both the amount and intensity of the exercise episode. In contrast, in the case of regular PA, the literature has primarily focused on the amount of exercise, and limited studies have assessed the influence of the exercise intensity. Since PA in higher intensity causes more extensive, more powerful, and longer-lasting neurobiological changes, it may prove more beneficial to cognitive functions and mental health. In the present study, we set out to test this hypothesis by employing a battery of questionnaires and laboratory tests with a sample of young adults. We found that more frequent vigorous- and moderate-intensity PA rather than walking (considered low to moderate intensity) was associated with better cognitive and mental health measures. Meanwhile, compared with no moderate- to vigorous-intensity physical activity (MVPA) at all, as few as 1~2 days per week (lasting at least 10 min each time) of MVPA was associated with a variety of benefits, particularly related to coping with challenging situations. In light of the neurobiological literature, the present study speaks to the value of moderate- to vigorous- rather than low-intensity PA in enhancing cognitive functions and mental health.
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Affiliation(s)
| | | | - Chong Chen
- Correspondence: ; Tel.: +81-836-22-2255; Fax: +81-836-22-2253
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Ichigo Y, Takeshita A, Hibino M, Nakagawa T, Hayakawa T, Patel D, Field CJ, Shimada M. High-Fructose Diet-Induced Hypertriglyceridemia Is Associated With Enhanced Hepatic Expression of ACAT2 in Rats. Physiol Res 2019; 68:1021-1026. [PMID: 31647302 DOI: 10.33549/physiolres.934226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 11/25/2022] Open
Abstract
High levels of fructose induce hypertriglyceridemia, characterized by excessive levels of triglyceride-rich lipoproteins such as very low-density lipoprotein (VLDL); however, the underlying mechanisms are poorly understood. The aim of this short communication was to examine hepatic changes in the expression of genes related to cholesterol metabolism in rats with hypertriglyceridemia induced by high-fructose or high-glucose diets. Rats were fed a 65 % (w/w) glucose diet or a 65 % (w/w) fructose diet for 12 days. Serum levels of triglycerides, total cholesterol, and VLDL+LDL-cholesterol, hepatic levels of triglycerides and cholesterol, and ACAT2 expression at the gene and protein levels were significantly higher in the fructose diet group compared to the glucose diet group. The hepatic levels of Abcg5/8 were lower in the fructose group than in the glucose group. Serum high-density lipoprotein (HDL)-cholesterol and hepatic expression levels of Hmgcr, Ldlr, Acat1, Mttp, Apob, and Cyp7a1 did not differ significantly between groups. These findings suggest that high-fructose diet-induced hypertriglyceridemia is associated with increased hepatic ACAT2 expression.
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Affiliation(s)
- Y Ichigo
- Department of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, Yanagido, Gifu, Japan,
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Morita M, Nakamura A, Tanaka H, Saito R, Inoue S, Harada T, Yamada T, Nakagawa T, Jingu D, Sugawara S. Phase II study of low-dose afatinib maintenance treatment for patients with EGFR-mutated non-small cell lung cancer (NJLCG1601). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz437.012] [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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40
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Kojima T, Marafioti T, Fujiwara T, Shirakawa Y, Nakatsura T, Kato K, Puccio I, Hikichi T, Yoshimura S, Nakagawa T, Furukawa M, Stoeber K, Nagira M, Ide N, Daiko H. Induction of tumour-infiltrating functional CD8 positive cells and PD-L1 expression in esophageal cancer by S-588410. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz253.037] [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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41
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Sato Y, Nakagawa T, Tanahashi T, Kitamura S, Miyamoto H, Okamoto K, Muguruma N, Takayama T. JMJD2A is a novel epigenetic factor of chemotherapeutic susceptibility in gastric cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz239.077] [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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42
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Tanaka H, Miyauchi E, Nakamura A, Harada T, Nakagawa T, Morita M, Jingu D, Tomoya K, Gamou S, Saito R, Inoue A. EP1.01-04 Phase I/II Trial of Biweekly Nab-Paclitaxel in Patients with Previously Treated Advanced Non-Small Cell Lung Cancer: NJLCG1402. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1987] [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: 11/25/2022]
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43
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Endo S, Imano M, Furukawa H, Yokokawa M, Nishimura Y, Shinkai M, Yasuda T, Nakagawa T, Adachi S, Lee S, Goto M, Kii T, Uchiyama K, Kawakami H, Shimokawa T, Sakai D, Kurokawa Y, Satoh T. Phase II study of preoperative radiotherapy combined with S-1 plus cisplatin in clinically resectable type 4 or large type 3 gastric cancer: OGSG1205. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz247.110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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Urata R, Ikeda K, Nakagawa T, Hoshino A, Honda S, Yagi N, Emoto N, Matoba S. P4500Cellular senescence of endothelial cells impairs angiogenesis by altering energy metabolism through p53-tigar axis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Ischemic disease is prevalent in elderly population due to impaired angiogenesis. Endothelial cell (EC) generates energy largely via glycolysis, which is further activated when angiogenesis actively occurs. PFK-1 is one of the most important regulatory enzymes for glycolysis, which is activated by PFKFB3. On the other hand, TIGAR inhibits PFK-1 under the control of p53. Crucial roles of PFKFB3 in EC functions under physiological and pathological conditions have been reported; however, a role of TIGAR in EC angiogenic functions remains to be elucidated. Furthermore, it remains unknown whether and how cellular senescence affect the energy metabolism in EC.
Purpose
The purpose of this study is to investigate molecular mechanisms underlying EC dysfunction associated with ageing, especially by focusing on endothelial energy metabolism.
Method and result
Senescent EC showed reduced glucose consumption assessed by [U-13C]-glucose tracer assay in association with increased expression of p53 and TIGAR. Angiogenic capacity assessed by tube-formation assay was reduced in senescent EC. Of note, either silencing of TIGAR by siRNA or lentivirus-mediated overexpression of PFKFB3 improved angiogenic capacity in senescent EC. These results collectively suggest that senescence impairs glycolysis in EC by activating p53-TIGAR axis, which leads to senescence-associated endothelial dysfunction. To analyze an impact of EC senescence in angiogenesis in vivo, we generated EC-specific progeroid mice in which dominant negative form of telomere repeat-binding factor 2 (TRF2) was overexpressed in EC under the control of the TIE2 promoter. After confirming EC-specific senescence in these endothelial progeroid mice, we generated hind-limb ischemia model. Recovery of blood flow assessed by laser doppler velocimeter was significantly impaired in endothelial progeroid mice, indicating that EC senescence is directly and causally implicated in age-related angiogenic dysfunction. Of note, genetic inactivation of TIGAR completely rescued the impaired ischemia-induced neovessel formation in EC-specific progeroid mice.
Conclusion
Using unique endothelial progeroid mice, we revealed that EC senescence is a bona fide risk for ischemic disease, largely by reducing glycolysis in EC through p53-TIGAR axis. Our data suggest that endothelial energy metabolism is an attracting therapeutic target for the prevention and/or treatment of ischemic diseases, especially in elderly population.
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Affiliation(s)
- R Urata
- Kyoto Prefectural University of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - K Ikeda
- Kobe Pharmaceutical University, Laboratory of Clinical Pharmaceutical Science, Kobe, Japan
| | - T Nakagawa
- University of Toyama, Department of Metabolism and Nutrition, Toyama, Japan
| | - A Hoshino
- Kyoto Prefectural University of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - S Honda
- Kyoto Prefectural University of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - N Yagi
- Kyoto Prefectural University of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - N Emoto
- Kobe Pharmaceutical University, Laboratory of Clinical Pharmaceutical Science, Kobe, Japan
| | - S Matoba
- Kyoto Prefectural University of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
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Tada H, Nakagawa T, Okada H, Nakahashi T, Mori M, Sakata K, Kawashiri M, Takamura M. P1535Clinical impact of carotid plaque score rather than carotid intima-media thickness on atherosclerotic cardiovascular disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Carotid intima-media thickness (cIMT) assessed by ultrasound has been widely accepted as a surrogate marker of atherosclerotic cardiovascular disease. On the other hand, carotid plaque score (cPS) reflecting throughout the carotid artery plaque burden may be better marker.
Methods
We retrospectively examined 2,035 patients who underwent carotid ultrasonography between January 2006 and December 2015 at our University Hospital. Median follow-up period was 4 years. We used Cox models that adjusted for established risk factors of ASCVD, including age, gender, hypertension, diabetes, smoking, and serum lipids to assess the association of cIMT as well as cPS with major adverse cardiac events (MACE). MACE was defined as all-cause mortality or rehospitalization for a cardiovascular-related illness
Results
During follow-up, 243 participants experienced MACE. After adjustment for established risk factors, cPS was associated with MACE (hazard ratio [HR] = 3.38 for top quintile vs. bottom quintile of cPS; 95% confidence interval [CI] 1.82 to 6.27; P-trend = 1.4×10–8), while cIMT was not (HR = 0.88, P=0.57). Addition of the cPS to established risk factors significantly improved risk discrimination (C-index 0.726 vs. 0.746; P=0.017)
Conclusion
As a marker, cPS, rather than cIMT can identify 20% of individuals who are at more than three-fold increased risk for MACE. Targeting diagnostic or therapeutic interventions to this subset may prove clinically useful.
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Affiliation(s)
- H Tada
- Kanazawa University, Kanazawa, Japan
| | | | - H Okada
- Kanazawa University, Kanazawa, Japan
| | | | - M Mori
- Kanazawa University, Kanazawa, Japan
| | - K Sakata
- Kanazawa University, Kanazawa, Japan
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Tomita A, Mochizuki H, Tsuboi M, Ogura I, Igarashi H, Goto-Koshino Y, Takahashi M, Ohmi A, Tomiyasu H, Ohno K, Nakagawa T, Uchida K, Nishimura R, Tsujimoto H. Development of canine X-chromosome inactivation pattern analysis for the detection of cell clonality by incorporating the examination of the SLIT and NTRK-like family member 4 (SLITRK4) gene. Res Vet Sci 2019; 125:170-175. [PMID: 31247472 DOI: 10.1016/j.rvsc.2019.06.004] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 06/09/2019] [Accepted: 06/10/2019] [Indexed: 01/10/2023]
Abstract
X-chromosome inactivation pattern (XCIP) analysis can be used to assess the clonality of cell populations of various origin by distinguishing the methylated X chromosome from the unmethylated X chromosome. In this study, the utility of XCIP analysis was improved by incorporating the examination of AC dinucleotide repeats in SLIT and NTRK-like family member 4 (SLITRK4) gene into the previously reported CAG repeat examination of androgen receptor (AR) gene in dogs. The rate of heterozygosity when both genes were analysed (125/150, 83.3%) was higher than AR gene examination alone (86/150, 57.3%). Blood samples from heterozygous dogs in either AC-1 or AC-2 of SLITRK4 gene were examined for the corrected inactivation allele ratio (CIAR), resulting in the determination of a reference range of CIAR <3.8 in non-neoplastic cell/tissue samples. Using this analytical method, 49% (21/43) of neoplastic tissue samples from dogs showed a CIAR >3.8, indicating the presence of a clonal population. Through the present study, the availability of canine XCIP analysis was improved by incorporating the examination of the SLITRK4 gene, providing a highly useful laboratory examination system for the detection of the clonality of various cell/tissue samples in dogs.
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Affiliation(s)
- A Tomita
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - H Mochizuki
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC 27607, USA
| | - M Tsuboi
- Veterinary Medical Center, Graduate School of Agricultural and Life Sciences, the University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - I Ogura
- KOJIMA Animal Hospital, KOJIMA Co., Ltd., 3-60-21 Kameido, Koto-ku, Tokyo 136-8510, Japan
| | - H Igarashi
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Y Goto-Koshino
- Veterinary Medical Center, Graduate School of Agricultural and Life Sciences, the University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - M Takahashi
- Laboratory of Small Animal Internal Medicine, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima-shi, Kagoshima 890-0065, Japan
| | - A Ohmi
- Veterinary Medical Center, Graduate School of Agricultural and Life Sciences, the University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - H Tomiyasu
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Ohno
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - T Nakagawa
- Department of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - R Nishimura
- Department of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - H Tsujimoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
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Sekiyama K, Yamada S, Nakagawa T, Nakayama Y, Kajiwara T. Partially Filled Flow Simulation Using Meshfree Method for High Viscosity Fluid in Plastic Mixer. INT POLYM PROC 2019. [DOI: 10.3139/217.3727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
A novel simulation technique for the flow in plastic mixers based on Element-free Galerkin Method (EFGM) has been developed in this study. To improve the simulation accuracy, a “rearrangement” scheme has been employed which eliminates errors caused by the irregular distribution of data points. Through several numerical tests, the new simulation technique has been validated to be applicable to high viscosity fluid flow with enough accuracy. Furthermore, simulation examples for realistic mixers were carried out using the developed technique. From the results, it was found that the developed technique is capable to investigate the relationship between flow behavior inside realistic mixers and operating conditions.
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Affiliation(s)
- K. Sekiyama
- Mechanical Engineering Research Laboratory , Kobe Steel, Ltd., Hyogo , Japan
- Department of Chemical Engineering , Faculty of Engineering, Kyushu University, Fukuoka , Japan
| | - S. Yamada
- Mechanical Engineering Research Laboratory , Kobe Steel, Ltd., Hyogo , Japan
| | - T. Nakagawa
- Mechanical Engineering Research Laboratory , Kobe Steel, Ltd., Hyogo , Japan
| | - Y. Nakayama
- Department of Chemical Engineering , Faculty of Engineering, Kyushu University, Fukuoka , Japan
| | - T. Kajiwara
- Department of Chemical Engineering , Faculty of Engineering, Kyushu University, Fukuoka , Japan
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Masuda H, Taketomi S, Inui H, Shimazaki N, Nishihara N, Toyooka S, Kawano H, Nakagawa T. Bone-to-bone integrations were complete within 5 months after anatomical rectangular tunnel anterior cruciate ligament reconstruction using a bone-patellar tendon-bone graft. Knee Surg Sports Traumatol Arthrosc 2018; 26:3660-3666. [PMID: 29663013 DOI: 10.1007/s00167-018-4938-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 03/08/2017] [Accepted: 04/04/2018] [Indexed: 12/23/2022]
Abstract
PURPOSE Anterior cruciate ligament (ACL) reconstruction using a bone-patellar tendon-bone (BTB) graft is known to provide secure fixation due to the direct bone-to-bone integration of the bone plug and bone tunnel. It is important to know the time required for bone integration when designing the postoperative rehabilitation protocol or deciding when the patient can return to competition-level activity, especially if the patient is an athlete. However, because reports are scarce, the period necessary for bone-to-bone integration after ACL reconstruction using a BTB graft remains unclear. The purpose of this study was to clarify this issue. It was hypothesised that ACL reconstruction using a BTB graft via an anatomical rectangular tunnel would help in the integration between bone plugs and bone tunnels on both the femoral and tibial sides after at least 6 months, at which point basic exercises similar to pre-injury sporting activity levels can be resumed. METHODS This study included 40 knees treated with ACL reconstruction using a BTB graft via anatomical rectangular tunnel reconstruction between 2013 and 2014 in a single institute. The integration between bone plugs and bone tunnels was evaluated using multi-slice tomosynthesis, which is a technique for producing slice images using conventional radiographic systems, at 1, 3, and 5 months postoperatively. All procedures were performed by two experienced surgeons. Bone integration was evaluated by two orthopaedic doctors. RESULTS The rates of integration of the bone plug and femoral bone tunnel on tomosynthesis at 1, 3, and 5 months postoperatively were 0, 55, and 100%, respectively. On the tibial side, the corresponding rates were 0, 75, and 100%, respectively. The rate of integration on the tibial side was significantly higher than that on the femoral side at 3 months postoperatively (p = 0.031). CONCLUSIONS Bone-to-bone integration on the femoral and tibial sides was complete within 5 months after surgery in all cases. Since the time required for bone integration is important in designing the postoperative rehabilitation approach, these results will serve as a useful guideline for planning rehabilitation protocols. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Hironari Masuda
- Department of Orthopaedic Surgery, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 117-0003, Japan
| | - Shuji Taketomi
- Department of Orthopaedic Surgery, Tokyo University, Tokyo, Japan
| | - Hiroshi Inui
- Department of Orthopaedic Surgery, Tokyo University, Tokyo, Japan
| | | | - Nobuhiro Nishihara
- Department of Orthopaedic Surgery, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 117-0003, Japan
| | - Seikai Toyooka
- Department of Orthopaedic Surgery, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 117-0003, Japan
| | - Hirotaka Kawano
- Department of Orthopaedic Surgery, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 117-0003, Japan
| | - Takumi Nakagawa
- Department of Orthopaedic Surgery, Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo, 117-0003, Japan.
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Nakagawa T, Hülür G. SOCIAL INTEGRATION AND TERMINAL DECLINE IN WELL-BEING AMONG JAPANESE OLDER ADULTS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Nakagawa
- University of Zurich, Zurich, Zurich, Switzerl
| | - G Hülür
- University of Zurich, Zurich, Switzerland
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50
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Nakagawa T, Cho J, Yeung D. SUCCESSFUL AGING IN EAST ASIA: A COMPARISON OF CHINA, KOREA, AND JAPAN. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - J Cho
- Baylor Scott & White Health, Temple, TX, USA
| | - D Yeung
- City University of Hong Kong
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