1
|
Honda S, Imamura A, Seki Y, Chigira K, Iwasa M, Hayami K, Nomura T, Ohkubo S, Ookawa T, Nagano AJ, Matsuoka M, Tanaka Y, Adachi S. Genome-wide association study of leaf photosynthesis using a high-throughput gas exchange system in rice. Photosynth Res 2024; 159:17-28. [PMID: 38112862 DOI: 10.1007/s11120-023-01065-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 11/13/2023] [Indexed: 12/21/2023]
Abstract
Enhancing leaf photosynthetic capacity is essential for improving the yield of rice (Oryza sativa L.). Although the exploitation of natural genetic resources is considered a promising approach to enhance photosynthetic capacity, genomic factors related to the genetic diversity of leaf photosynthetic capacity have yet to be fully elucidated due to the limitation of measurement efficiency. In this study, we aimed to identify novel genomic regions for the net CO2 assimilation rate (A) by combining genome-wide association study (GWAS) and the newly developed rapid closed gas exchange system MIC-100. Using three MIC-100 systems in the field at the vegetative stage, we measured A of 168 temperate japonica rice varieties with six replicates for three years. We found that the modern varieties exhibited higher A than the landraces, while there was no significant relationship between the release year and A among the modern varieties. Our GWAS scan revealed two major peaks located on chromosomes 4 and 8, which were repeatedly detected in the different experiments and in the generalized linear modelling approach. We suggest that high-throughput gas exchange measurements combined with GWAS is a reliable approach for understanding the genetic mechanisms underlying photosynthetic diversities in crop species.
Collapse
Affiliation(s)
- Sotaro Honda
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Ayumu Imamura
- Graduate School of Agriculture, Ibaraki University, Ibaraki, 300-0393, Japan
| | - Yoshiaki Seki
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Koki Chigira
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Marina Iwasa
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Kentaro Hayami
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Tomohiro Nomura
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Satoshi Ohkubo
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Taiichiro Ookawa
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Atsushi J Nagano
- Faculty of Agriculture, Ryukoku University, Shiga, 520-2194, Japan
- Institute for Advanced Biosciences, Keio University, Yamagata, 997-0017, Japan
| | - Makoto Matsuoka
- Faculty of Food and Agricultural Sciences, Institute of Fermentation Sciences, Fukushima University, Fukushima, 960-1296, Japan
| | - Yu Tanaka
- Graduate School of Environment and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Shunsuke Adachi
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan.
| |
Collapse
|
2
|
Hashimoto K, Miyama H, Seki Y, Ibe S, Yamashita T, Fujisawa T, Katsumata Y, Kimura T, Fukuda K, Takatsuki S. Advantage of POLARx over ARCTIC FRONT ADVANCE PRO during pulmonary vein isolation for paroxysmal atrial fibrillation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
The electrical pulmonary vein (PV) isolation has been established as a curative therapy for paroxysmal atrial fibrillation (AF). Arctic Front™cryoballoon has been used worldwide for AF cryoablation. Recently, a new cryoballoon, POLARxTM CRYOABLATION system have been introduced, of which material of the balloon is softer and the N2O gas flow rate is higher.
Purpose
The aim was to investigate the procedural parameter and efficacy of POLARx comparing with Arctic Front.
Methods
This retrospective single center study included 101 consecutive patients who underwent paroxysmal AF ablation using cryoballoon at Keio University hospital from April 2021 to March 2022. The procedural data including the cryoballoon temperature and the number and duration of cryoablation were compared between POLARx (POLARx group) and ARCTIC FRONT ADVANCE PRO (AFA group). After the cryoablation, we added the radiofrequency application in order to maximize the isolated area when the voltage was remained inside PV (Figure 1). The necessities of the additional radiofrequency applications were also compared.
Results
In the present study, 64 patients in AFA group and 37 patients in POLARx group were analyzed. POLARx group included younger population and less females (62.8±9.9 vs 67.5±9.4 year of age, P=0.02; 13.5 vs 32.8%, P=0.04). There was no significant difference in comorbidities and examination data such as left atrium diameter or brain natriuretic peptide level. The minimal cryoballoon temperatures reached in POLARx group were lower than AFA group (−59.3±6.2 vs −47.7±7.5°C, P<0.01). No difference was found in the total number and duration of cryoablation and the time to isolate PV (6.1±2.1 vs 5.9±1.6, P=0.69; 790.2±256.1 vs 776.1±235.0 sec, P=0.69; 41.8±21.3 vs 47.1±29.6 sec, P=0.44, respectively). With regard to individual PVs, the total number and duration were tended to be larger at right superior PV in POLARx group (1.9±1.1 vs 1.4±0.7, P=0.01; 231.8±123.8 vs 193.2±83.0 sec, P=0.07), while there was no significant difference at the other PVs. The rate of successful PV isolation by a single cryo-application was not different between AFA and POLARx group (54.3 vs 61.4%, P=0.17). The additional radiofrequency applications were more frequent in AFA group (14.8 vs. 4.9%, P=0.003). There was a significant difference at right inferior PV (32.8 vs 8.1%, P=0.01), while not at left superior PV, left inferior PV and right superior PV (9.4 vs 2.9%, P=0.42; 9.4 vs 5.7%, P=0.71; 7.8 vs 2.7%, P=0.41). Phrenic nerve injury was occurred 1 case in both group and esophageal ulcer was occurred in 1 case in AFA group. No other complication including cardiac tamponade was occurred.
Conclusion
The total number and duration of cryoablation were not significantly different between AFA and POLARx group, except for right superior PV. There was an advantage in largely isolating right inferior PV in POLARx group comparing with AFA group.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- K Hashimoto
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - H Miyama
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - Y Seki
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - S Ibe
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - T Yamashita
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - T Fujisawa
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - Y Katsumata
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - T Kimura
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - K Fukuda
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| | - S Takatsuki
- Keio University School of Medicine, Department of Cardiology , Tokyo , Japan
| |
Collapse
|
3
|
Shalehin N, Seki Y, Takebe H, Fujii S, Mizoguchi T, Nakamura H, Yoshiba N, Yoshiba K, Iijima M, Shimo T, Irie K, Hosoya A. Gli1 +-PDL Cells Contribute to Alveolar Bone Homeostasis and Regeneration. J Dent Res 2022; 101:1537-1543. [PMID: 35786034 DOI: 10.1177/00220345221106921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The periodontal ligament (PDL) contains mesenchymal stem cells (MSCs) that can differentiate into osteoblasts, cementoblasts, and fibroblasts. Nevertheless, the distribution and characteristics of these cells remain uncertain. Gli1, an essential hedgehog signaling transcription factor, functions in undifferentiated cells during embryogenesis. Therefore, in the present study, the differentiation ability of Gli1+ cells was examined using Gli1-CreERT2/ROSA26-loxP-stop-loxP-tdTomato (iGli1/Tomato) mice. In 4-wk-old iGli1/Tomato mice, Gli1/Tomato+ cells were only slightly detected in the PDL, around endomucin-expressing blood vessels. These cells had proliferated over time, localizing in the PDL as well as on the bone and cementum surfaces at day 28. However, in 8-wk-old iGli1/Tomato mice, Gli1/Tomato+ cells were quiescent, as most cells were not immunoreactive for Ki-67. These cells in 8-wk-old mice exhibited high colony-forming unit fibroblast activity and were capable of osteogenic, chondrogenic, and adipogenic differentiation in vitro. In addition, after transplantation of teeth of iGli1/Tomato mice into the hypodermis of wild-type mice, Tomato fluorescence indicating the progeny of Gli1+ cells was detected in the osteoblasts and osteocytes of the regenerated bone. These results demonstrate that Gli1+ cells in the PDL were MSCs and could contribute to the alveolar bone regeneration.
Collapse
Affiliation(s)
- N Shalehin
- Division of Histology, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - Y Seki
- Division of Histology, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan.,Division of Orthodontics and Dentofacial Orthopedics, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - H Takebe
- Division of Histology, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - S Fujii
- Division of Oral Surgery, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - T Mizoguchi
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - H Nakamura
- Department of Oral Anatomy, Matsumoto Dental University, Nagano, Japan
| | - N Yoshiba
- Division of Cariology, Department of Oral Health Science, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - K Yoshiba
- Division of Oral Science for Health Promotion, Department of Oral Health and Welfare, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - M Iijima
- Division of Orthodontics and Dentofacial Orthopedics, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - T Shimo
- Division of Oral Surgery, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - K Irie
- Division of Anatomy, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - A Hosoya
- Division of Histology, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| |
Collapse
|
4
|
Fukuda M, Seki Y, Ezato K, Yokoyama K, Nishi H, Suzuki S, Hirai T. Performance evaluation of tungsten for ITER divertor toward mass production. Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
5
|
Acar V, Erden S, Sarikanat M, Seki Y, Akbulut H, Seydibeyoglu MO. Graphene oxide modified carbon fiber prepregs: A mechanical comparison of the effects of oxidation methods. EXPRESS POLYM LETT 2020. [DOI: 10.3144/expresspolymlett.2020.90] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
6
|
Kazuyori T, Seki Y, Sato A, Fujimoto S, Yamada M, Yamanaka Y, Fujisaki I, Odashima K, Seki A, Ishikawa T, Kuwano K. P2.16-32 Best Supportive Care for Extreme Elderly Lung Cancer Patients. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1899] [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]
|
7
|
Seki Y, Kazuyori T, Sato A, Fujimoto S, Yamada M, Yamanaka Y, Fujisaki I, Odashima K, Seki A, Ishikawa T, Kuwano K. P2.16-07 How to Manage Toxicities of EGFR-TKI for Extreme Elderly Lung Cancer Patients: Supportive Care for Patients Aged 85 and Older. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1874] [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]
|
8
|
Fujita K, Kaburagi H, Nimura A, Miyamoto T, Wakabayashi Y, Seki Y, Aoyama H, Shimura H, Kato R, Okawa A. Lower grip strength and dynamic body balance in women with distal radial fractures. Osteoporos Int 2019; 30:949-956. [PMID: 30607458 PMCID: PMC6502779 DOI: 10.1007/s00198-018-04816-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/14/2018] [Indexed: 12/30/2022]
Abstract
UNLABELLED In this case-control study, we concluded that women with distal radial fractures who were surgically treated showed lower grip strength and dynamic body balancing than those of controls. These results suggest that measurements of grip strength and dynamic body balance may be useful screening tools to assess future fracture risk. INTRODUCTION Patients with distal radial fractures (DRFs) are at risk of future fragility fractures. However, their physical characteristics and tendencies for falls remain unclear. We aimed to compare the physical characteristics of women with and without distal radial fractures. METHODS We included 128 women with a DRF as their first fragility fracture (fracture group) who underwent surgical treatment. Concurrently, 128 age- and sex-matched participants without a history of fragility fractures were selected as controls (control group). The participants underwent assessments of grip strength and the body balancing ability test. Measurements were taken twice in the fracture group, at 2 weeks and 6 months postoperatively, and once in the control group. The body balancing ability test included the Functional Reach Test, Timed Up and Go test (TUG), 2-Step test (2ST), and Timed Uni-pedal Stance test. The participants also completed questionnaires about their health. RESULTS There were no significant differences (p > 0.05) in patient characteristics between the groups. The fracture group showed lower grip strength across all age groups. In the DRF group, prolonged TUG time was observed at 2 weeks postoperatively in all age groups and at 6 months in participants aged 55-74 years; the 2ST score was significantly lower in participants aged between 65 and 74 years. CONCLUSIONS Women with DRF demonstrated lower grip strength and dynamic body balancing ability. Lower grip strength and dynamic body balancing ability were identified as significant risk factors in women with DRF, suggesting that these may be useful screening tools to assess fracture risk.
Collapse
Affiliation(s)
- K Fujita
- Department of Orthopaedic and Spinal Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - H Kaburagi
- Department of Orthopaedic and Spinal Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - A Nimura
- Department of Functional Joint Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - T Miyamoto
- Department of Functional Joint Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y Wakabayashi
- Department of Orthopedic Surgery, Yokohama City Minato Red Cross Hospital, Kanagawa, Japan
| | - Y Seki
- Department of Orthopedic Surgery, Suwa Central Hospital, Nagano, Japan
| | - H Aoyama
- Department of Orthopedic Surgery, JA Toride Medical Center, Ibaraki, Japan
| | - H Shimura
- Department of Orthopedic Surgery, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan
| | - R Kato
- JA Kyosai Research Institute, Tokyo, Japan
| | - A Okawa
- Department of Orthopaedic and Spinal Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| |
Collapse
|
9
|
Fujita K, Kaburagi H, Nimura A, Miyamoto T, Wakabayashi Y, Seki Y, Aoyama H, Shimura H, Kato R, Okawa A. Correction to: Lower grip strength and dynamic body balance in women with distal radial fractures. Osteoporos Int 2019; 30:697. [PMID: 30806728 PMCID: PMC6828462 DOI: 10.1007/s00198-019-04860-8] [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: 10/27/2022]
Abstract
The article Lower grip strength and dynamic body balance in women with distal radial fractures, written by. K. Fujita, H. Kaburagi, A. Nimura, T. Miyamoto, Y. Wakabayashi, Y. Seki, H. Aoyama, H. Shimura, R. Kato, A. Okawa was originally published electronically on the publisher's internet portal.
Collapse
Affiliation(s)
- K Fujita
- Department of Orthopaedic and Spinal Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - H Kaburagi
- Department of Orthopaedic and Spinal Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - A Nimura
- Department of Functional Joint Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - T Miyamoto
- Department of Functional Joint Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y Wakabayashi
- Department of Orthopedic Surgery, Yokohama City Minato Red Cross Hospital, Kanagawa, Japan
| | - Y Seki
- Department of Orthopedic Surgery, Suwa Central Hospital, Nagano, Japan
| | - H Aoyama
- Department of Orthopedic Surgery, JAToride Medical Center, Ibaraki, Japan
| | - H Shimura
- Department of Orthopedic Surgery, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan
| | - R Kato
- JA Kyosai Research Institute, Tokyo, Japan
| | - A Okawa
- Department of Orthopaedic and Spinal Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| |
Collapse
|
10
|
Seki Y, Aoki T, Maehara H, Shirasawa S. Distal locking screw length for volar locking plate fixation of distal radius fractures: Postoperative stability of full-length unicortical versus shorter screws. Hand Surg Rehabil 2018; 38:28-33. [PMID: 30509732 DOI: 10.1016/j.hansur.2018.10.246] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/29/2018] [Accepted: 10/17/2018] [Indexed: 11/28/2022]
Abstract
We compared post-operative distal radius fracture (DRF) displacement after volar locking plate fixation using full-length unicortical and shorter-length distal locking screws. In this non-inferiority, retrospective cohort study, DRFs treated with volar locking plate fixation were evaluated on X-rays. In the full-length group, volar locking plate fixation was performed with full-length unicortical distal locking screws. In the shorter-length group, the distal locking screws were planned pre-operatively to be approximately 75% of the distal radius depth based on the lunate depth, and the same depth was drilled. Three radiographic parameters - ulnar variance, volar tilt, and radial inclination - were measured intra-operatively and at the final follow-up. The displacements were compared between the two groups. Each group contained 34 fractures. The mean ulnar variance between the two periods increased 1.1 mm in the full-length group and 1.3 mm in the shorter group (mean difference, 0.2 mm; 90% confidence interval, -0.3 to 0.6). The shorter group was not significantly inferior to the full-length one. Volar tilt increased 0.6° in the full-length group and -0.1° in the shorter group, while the radial inclination increased 0.1° in the full-length group and 0.2° in the shorter one. The differences in the increases were not significant. The post-operative DRF stability of 75%-length distal locking screws was not inferior to that of full-length unicortical screws. To prevent extensor pollicis longus tendon rupture, shorter distal locking screws and the same drilling depth may be preferable for volar locking plate fixation.
Collapse
Affiliation(s)
- Y Seki
- Department of Orthopedic Surgery, Suwa Central Hospital, 4300 3918503 Tamagawa, Chino, Nagano, Japan.
| | - T Aoki
- Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 6068501, Japan
| | - H Maehara
- Department of Orthopedic Surgery, Suwa Central Hospital, 4300 3918503 Tamagawa, Chino, Nagano, Japan
| | - S Shirasawa
- Department of Orthopedic Surgery, Suwa Central Hospital, 4300 3918503 Tamagawa, Chino, Nagano, Japan
| |
Collapse
|
11
|
Chan WK, Treeprasertsuk S, Imajo K, Nakajima A, Seki Y, Kasama K, Kakizaki S, Fan JG, Song MJ, Yoon SK, Dan YY, Lesmana L, Ho KY, Goh KL, Wong VWS. Clinical features and treatment of nonalcoholic fatty liver disease across the Asia Pacific region-the GO ASIA initiative. Aliment Pharmacol Ther 2018; 47:816-825. [PMID: 29333610 DOI: 10.1111/apt.14506] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 08/06/2017] [Accepted: 12/16/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND The Gut and Obesity Asia (GO ASIA) workgroup was formed to study the relationships between obesity and gastrointestinal diseases in the Asia Pacific region. AIM To study factors associated with nonalcoholic steatohepatitis (NASH) and advanced fibrosis, and medical treatment of biopsy-proven nonalcoholic fatty liver disease (NAFLD) patients. METHODS Retrospective study of biopsy-proven NAFLD patients from centres in the GO ASIA Workgroup. Independent factors associated with NASH and with advanced fibrosis on binary logistic regression analyses in a training cohort were used for the development of their corresponding risk score, which were validated in a validation cohort. RESULTS We included 1008 patients from nine centres across eight countries (NASH 62.9%, advanced fibrosis 17.2%). Independent predictors of NASH were body mass index ≥30 kg/m2 , diabetes mellitus, dyslipidaemia, alanine aminotransferase ≥88 U/L and aspartate aminotransferase ≥38 U/L, constituting the Asia Pacific NASH risk score. A high score has a positive predictive value of 80%-83% for NASH. Independent predictors of advanced fibrosis were age ≥55 years, diabetes mellitus and platelet count <150 × 109 /L, constituting the Asia-Pacific NAFLD advanced fibrosis risk score. A low score has a negative predictive value of 95%-96% for advanced fibrosis. Only 1.7% of patients were referred for structured lifestyle program, 4.2% were on vitamin E, and 2.4% were on pioglitazone. CONCLUSIONS More severe liver disease can be suspected or ruled out based on factors identified in this study. Utilisation of structured lifestyle program, vitamin E and pioglitazone was limited despite this being a cohort of biopsy-proven NAFLD patients with majority of patients having NASH.
Collapse
Affiliation(s)
| | | | - K Imajo
- Yokohama City University Graduate School of Medicine, Japan
| | - A Nakajima
- Yokohama City University Graduate School of Medicine, Japan
| | - Y Seki
- Yotsuya Medical Cube, Japan
| | | | - S Kakizaki
- Gunma University Graduate School of Medicine, Japan
| | - J-G Fan
- Shanghai Jiaotong University School of Medicine, China
| | - M J Song
- The Catholic University Korea, Korea
| | - S K Yoon
- The Catholic University Korea, Korea
| | - Y-Y Dan
- National University of Singapore, Singapore
| | - L Lesmana
- Medistra Hospital, Jakarta, Indonesia
| | - K-Y Ho
- National University of Singapore, Singapore
| | - K-L Goh
- University of Malaya, Malaysia
| | - V W-S Wong
- The Chinese University of Hong Kong, Hong Kong, China
| |
Collapse
|
12
|
Affiliation(s)
- E.T. Cheng
- TSI Research, Inc. 225 Stevens Avenue Solana Beach, CA USA 92075
| | - P. Rocco
- European Commission - JRC Institute for Advanced Materials T.P.800, I-21020 Ispra (VA), Italy
| | - M. Zucchetti
- European Commission - JRC Institute for Advanced Materials T.P.800, I-21020 Ispra (VA), Italy
- Polytechnic of Torino, Energetics Department, C.so Duca degli Abruzzi 24, I-10129 Torino, Italy
| | - Y. Seki
- JAERI Mukouyama 801-1 Naka-machi, Naka-gun Ibaraki-ken 311-0102, Japan
| | - T. Tabara
- Sumitomo Atomic Energy Industries, Ltd., 2-10-14, Ryogoku, Sumidaku, Tokyo, 130 Japan
| |
Collapse
|
13
|
Kamiyanagi A, Sumita Y, Ino S, Chikai M, Nakane A, Tohara H, Minakuchi S, Seki Y, Endo H, Taniguchi H. Evaluation of swallowing ability using swallowing sounds in maxillectomy patients. J Oral Rehabil 2017; 45:126-131. [PMID: 29197111 DOI: 10.1111/joor.12593] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2017] [Indexed: 11/28/2022]
Abstract
Maxillectomy for oral tumours often results in debilitating oral hypofunction, which markedly decreases quality of life. Dysphagia, in particular, is one of the most serious problems following maxillectomy. This study used swallowing sounds as a simple evaluation method to evaluate swallowing ability in maxillectomy patients with and without their obturator prosthesis placed. Twenty-seven maxillectomy patients (15 men, 12 women; mean age 66.0 ± 12.1 years) and 30 healthy controls (14 men, 16 women; mean age 44.9 ± 21.3 years) were recruited for this study. Participants were asked to swallow 4 mL of water, and swallowing sounds were recorded using a throat microphone. Duration of the acoustic signal and duration of peak intensity (DPI) were measured. Duration of peak intensity was significantly longer in maxillectomy patients without their obturator than with it (P < .05) and was significantly longer in maxillectomy patients without their obturator than in healthy controls (P < .025 after Bonferroni correction). With the obturator placed, DPI was significantly longer in maxillectomy patients who had undergone soft palate resection than in those who had not (P < .05). These results suggest swallowing ability in maxillectomy patients could be improved by wearing an obturator prosthesis, particularly during the oral stage. However, it is difficult to improve the oral stage of swallowing in patients who have undergone soft palate resection even with obturator placement.
Collapse
Affiliation(s)
- A Kamiyanagi
- Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Y Sumita
- Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - S Ino
- Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - M Chikai
- Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - A Nakane
- Department of Gerodontology and Oral Rehabilitation, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - H Tohara
- Department of Gerodontology and Oral Rehabilitation, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - S Minakuchi
- Department of Gerodontology and Oral Rehabilitation, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Y Seki
- Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - H Endo
- Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - H Taniguchi
- Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| |
Collapse
|
14
|
Mori S, Miura H, Yamazaki S, Suzuki T, Shimizu A, Seki Y, Kunugi T, Nishio S, Fujisawa N, Hishinuma A, Kikuchi M. Preliminary Design of a Solid Particulate Cooled Blanket for the Steady State Tokamak Reactor (SSTR). ACTA ACUST UNITED AC 2017. [DOI: 10.13182/fst92-a29973] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Mori
- Kawasaki Heavy Industries, Ltd., 2-4-25 Minami-suna, Koto-ku,Tokyo, 136, Japan (3)3615-5147
| | - H. Miura
- Kawasaki Heavy Industries, Ltd., 2-4-25 Minami-suna, Koto-ku,Tokyo, 136, Japan (3)3615-5147
| | - S. Yamazaki
- Kawasaki Heavy Industries, Ltd., 2-4-25 Minami-suna, Koto-ku,Tokyo, 136, Japan (3)3615-5147
| | - T. Suzuki
- Kawasaki Heavy Industries, Ltd., 2-4-25 Minami-suna, Koto-ku,Tokyo, 136, Japan (3)3615-5147
| | - A. Shimizu
- Kyushu University, 6-1 Kasuga-koen, Kasuga city, Fukuoka-ken, 816, Japan (92)573-9611
| | - Y. Seki
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - T. Kunugi
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - S. Nishio
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - N. Fujisawa
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - A. Hishinuma
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - M. Kikuchi
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| |
Collapse
|
15
|
Tone T, Fujisawa N, Seki Y, Iida H, Tachikawa K, Sugihara M, Minato A, Nishio S, Yamamoto T, Kitamura K, Ueda K, Saito S, Shimada R, Matsuda Y, Naruse Y, Shimamoto S, Tamura S, Yoshikawa M, Tomabechi K. Conceptual Design of Fusion Experimental Reactor(FER). ACTA ACUST UNITED AC 2017. [DOI: 10.13182/fst83-a22924] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Tone
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - N. Fujisawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Seki
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - H. Iida
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Tachikawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - M. Sugihara
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - A. Minato
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Nishio
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - T. Yamamoto
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Kitamura
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Ueda
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Saito
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - R. Shimada
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Matsuda
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Naruse
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Shimamoto
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Tamura
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - M. Yoshikawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Tomabechi
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| |
Collapse
|
16
|
Kobyashi S, Kawakami A, Seki Y, Rokkaku R. A LONGITUDINAL EDUCATIONAL APPROACH TO IMPROVING END-OF-LIFE CARE IN JAPANESE NURSING HOMES. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.259] [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)
- S. Kobyashi
- Department of Nursing, School of Health Science, Tokyo university of Technology, Tokyo, Japan,
| | | | - Y. Seki
- Dokkyo Medical University, Mibu-machi, Japan,
| | - R. Rokkaku
- Dokkyo Medical University, Mibu-machi, Japan,
| |
Collapse
|
17
|
Seki Y, Kakinuma A, Kuchii T, Ohira K. Why chronically ill children face challenges in regular classrooms: perspectives from nursing teachers in Japan. Child Care Health Dev 2017; 43:281-288. [PMID: 27781298 DOI: 10.1111/cch.12423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 09/12/2016] [Accepted: 10/02/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Chronically ill children are increasingly expected to join their peers in regular classrooms. However, sometimes schools do not provide adequate assistance. This study explores nursing teachers' thoughts and experiences on integrating such students into regular classrooms in Japan. METHODS We analysed 79 essays written by nursing teachers collectively titled 'The challenges of having chronically ill children in regular classrooms'. We conducted a qualitative study using Kinoshita's Modified Grounded Theory Approach. RESULTS Nursing teachers identified three main obstacles: insufficient resources to support chronically ill students, parents not playing a supporting role in aiding them at school and a regular classroom not being suitable for them. However, collaborating with the children's medical staff proved successful at integrating them into regular classrooms. CONCLUSIONS Given these obstacles, it seems very difficult for nursing teachers to lead the way toward establishing cooperative support systems for the children. Instructions from medical staff could empower teachers to set up such systems.
Collapse
Affiliation(s)
- Y Seki
- Faculty of Education, Saitama University, Saitama City, Japan
| | - A Kakinuma
- Social Welfare Corporation Habataki Welfare Project, Tokyo, Japan
| | - T Kuchii
- Social Welfare Corporation Habataki Welfare Project, Tokyo, Japan
| | - K Ohira
- Social Welfare Corporation Habataki Welfare Project, Tokyo, Japan
| |
Collapse
|
18
|
Kinoshita S, Miyake R, Shimada N, Hirano A, Seki Y, Harada J, Suzuki M, Kato K, Uchida K, Takeyama H, Morikawa T. Initial experience with contrast-enhanced ultrasonography in follow up assessment of small breast cancer treated by cryoablation. Australas Med J 2017. [DOI: 10.21767/amj.2017.3034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
19
|
Tada T, Seki Y, Kameyama Y, Kikkawa Y, Wada K. Characterization and application of newly developed polymorphic microsatellite markers in the Ezo red fox (Vulpes vulpes schrencki). Genet Mol Res 2016; 15:gmr-15-04-gmr.15049104. [PMID: 28002597 DOI: 10.4238/gmr15049104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Ezo red fox (Vulpes vulpes schrencki), a subspecies endemic to Hokkaido island, Japan, is a known host species for the tapeworm Echinococcus multilocularis. To develop tools for molecular ecological studies, we isolated 28 microsatellite regions from the genome of Ezo red fox, and developed 18 polymorphic microsatellite markers. These markers were characterized using 7 individuals and 22 fecal samples of the Ezo red fox. The number of alleles for these markers ranged from 1 to 7, and the observed heterozygosity, estimated on the basis of the genotypes of 7 individuals, ranged from 0.29 to 1.00. All markers, except DvNok5, were in Hardy-Weinberg equilibrium (P > 0.05), and no linkage disequilibrium was detected among these loci, except between DvNok14 and DvNok28 (P = 0.01). Moreover, six microsatellite loci were successfully genotyped using feces-derived DNA from the Ezo red fox. The markers developed in our study might serve as a useful tool for molecular ecological studies of the Ezo red fox.
Collapse
Affiliation(s)
- T Tada
- Graduate School of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, Japan
| | - Y Seki
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Y Kameyama
- Graduate School of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, Japan
| | - Y Kikkawa
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - K Wada
- Graduate School of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, Japan .,Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| |
Collapse
|
20
|
Seki Y, Fujiwara Y, Kohno T, Goto Y, Horinouchi H, Kanda S, Nokihara H, Yamamoto N, Kuwano K, Ohe Y. Analysis of circulating cell-free DNA in plasma shows a higher detection rate of EGFR mutations in patients with extrathoracic disease progression. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw393.02] [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
|
21
|
Nunokawa K, Seki Y, Ino S, Doi K. Judging hardness of an object from the sounds of tapping created by a white cane. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2014:5876-9. [PMID: 25571333 DOI: 10.1109/embc.2014.6944965] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The white cane plays a vital role in the independent mobility support of the visually impaired. Allowing the recognition of target attributes through the contact of a white cane is an important function. We have conducted research to obtain fundamental knowledge concerning the exploration methods used to perceive the hardness of an object through contact with a white cane. This research has allowed us to examine methods that enhance accuracy in the perception of objects as well as the materials and structures of a white cane. Previous research suggest considering the roles of both auditory and tactile information from the white cane in determining objects' hardness is necessary. This experimental study examined the ability of people to perceive the hardness of an object solely through the tapping sounds of a white cane (i.e., auditory information) using a method of magnitude estimation. Two types of sounds were used to estimate hardness: 1) the playback of recorded tapping sounds and 2) the sounds produced on-site by tapping. Three types of handgrips were used to create different sounds of tapping on an object with a cane. The participants of this experiment were five sighted university students wearing eye masks and two totally blind students who walk independently with a white cane. The results showed that both sighted university students and totally blind participants were able to accurately judge the hardness of an object solely by using auditory information from a white cane. For the blind participants, different handgrips significantly influenced the accuracy of their estimation of an object's hardness.
Collapse
|
22
|
Makino T, Mizawa M, Seki Y, Hayashi M, Shimizu T. Decreased filaggrin-2 expression in the epidermis in a case of pityriasis rotunda. Clin Exp Dermatol 2015; 41:215-7. [DOI: 10.1111/ced.12716] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2015] [Indexed: 11/29/2022]
Affiliation(s)
- T. Makino
- Department of Dermatology; Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Sugitani 2630 Toyama 930-0194 Japan
| | - M. Mizawa
- Department of Dermatology; Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Sugitani 2630 Toyama 930-0194 Japan
| | - Y. Seki
- Department of Dermatology; Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Sugitani 2630 Toyama 930-0194 Japan
| | - M. Hayashi
- Department of Dermatology; Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Sugitani 2630 Toyama 930-0194 Japan
| | - T. Shimizu
- Department of Dermatology; Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Sugitani 2630 Toyama 930-0194 Japan
| |
Collapse
|
23
|
Takahashi S, Seki Y, Uchida A, Nakayama K, Satoh H. Are tyrosine residues involved in the photoconversion of the water-soluble chlorophyll-binding protein of Chenopodium album? Plant Biol (Stuttg) 2015; 17:632-638. [PMID: 25287526 DOI: 10.1111/plb.12274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 09/29/2014] [Indexed: 06/03/2023]
Abstract
Non-photosynthetic and hydrophilic chlorophyll (Chl) proteins, called water-soluble Chl-binding proteins (WSCPs), are distributed in various species of Chenopodiaceae, Amaranthaceae, Polygonaceae and Brassicaceae. Based on their photoconvertibility, WSCPs are categorised into two classes: Class I (photoconvertible) and Class II (non-photoconvertible). Chenopodium album WSCP (CaWSCP; Class I) is able to convert the chlorin skeleton of Chl a into a bacteriochlorin-like skeleton under light in the presence of molecular oxygen. Potassium iodide (KI) is a strong inhibitor of the photoconversion. Because KI attacks tyrosine residues in proteins, tyrosine residues in CaWSCP are considered to be important amino acid residues for the photoconversion. Recently, we identified the gene encoding CaWSCP and found that the mature region of CaWSCP contained four tyrosine residues: Tyr13, Tyr14, Tyr87 and Tyr134. To gain insight into the effect of the tyrosine residues on the photoconversion, we constructed 15 mutant proteins (Y13A, Y14A, Y87A, Y134A, Y13-14A, Y13-87A, Y13-134A, Y14-87A, Y14-134A, Y87-134A, Y13-14-87A, Y13-14-134A, Y13-87-134A, Y14-87-134A and Y13-14-87-134A) using site-directed mutagenesis. Amazingly, all the mutant proteins retained not only chlorophyll-binding activity, but also photoconvertibility. Furthermore, we found that KI strongly inhibited the photoconversion of Y13-14-87-134A. These findings indicated that the four tyrosine residues are not essential for the photoconversion.
Collapse
Affiliation(s)
- S Takahashi
- Department of Biomolecular Science, Toho University, Funabashi, Chiba, Japan
| | | | | | | | | |
Collapse
|
24
|
Seki Y, Kakinuma A, Kuchii T, Ohira K. Disclosing haemophilia at school: strategies employed by mothers of children with haemophilia in Japan. Haemophilia 2015; 21:629-35. [PMID: 25854899 DOI: 10.1111/hae.12674] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2015] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Most children with haemophilia in Japan study in mainstream schools. However, many mothers have difficulty deciding whether to inform teachers of their child's haemophilia because of the accompanying potential discrimination and prejudice, particularly after the press coverage on the HIV scandal in the 1980s. AIMS We therefore aim to explore and describe disclosure strategies of mothers of children with haemophilia. METHODS A qualitative study was conducted using the modified grounded theory approach to explore disclosure strategies of mothers of children with haemophilia. Semi-structured interviews were conducted with 19 selected mothers (12 children were HIV positive and 7 were HIV-negative). RESULTS In the pre-HIV/AIDS crisis period, the kind of strategy employed - full disclosure, conditional full disclosure and partial disclosure - depended on the extent of mothers' fears about mainstream schools refusing admission because of their child's haemophilia. After the HIV/AIDS crisis in the 1980s in Japan, the three categories of strategies employed by mothers of children with haemophilia were limited disclosure, non-disclosure and full disclosure. These depended on mothers' expectations of discrimination towards their child because of the social stigma around haemophilia and being HIV-positive. CONCLUSION For children with haemophilia to feel safe attending school, public schools must establish care management and anti-discrimination systems for children with chronic diseases, thus assuring parents of their children's welfare at school.
Collapse
Affiliation(s)
- Y Seki
- Faculty of Education, Saitama University, Saitama, Japan
| | - A Kakinuma
- Social Welfare Corporation Habataki Welfare Project, Tokyo, Japan
| | - T Kuchii
- Social Welfare Corporation Habataki Welfare Project, Tokyo, Japan
| | - K Ohira
- Social Welfare Corporation Habataki Welfare Project, Tokyo, Japan
| |
Collapse
|
25
|
Wada H, Okamoto K, Iba T, Kushimoto S, Kawasugi K, Gando S, Madoiwa S, Uchiyama T, Mayumi T, Seki Y. Addition of recommendations for the use of recombinant human thrombomodulin to the "Expert consensus for the treatment of disseminated intravascular coagulation in Japan". Thromb Res 2014; 134:924-5. [PMID: 25135793 DOI: 10.1016/j.thromres.2014.07.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 06/28/2014] [Accepted: 07/30/2014] [Indexed: 11/17/2022]
Affiliation(s)
- H Wada
- Department of Molecular and Laboratory Medicine, Mie University School of Medicine, Tsu, Japan.
| | - K Okamoto
- Department of Emergency Medicine, Juntendo University, Tokyo, Japan
| | - T Iba
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Japan
| | - S Kushimoto
- Department of Internal Medicine, Teikyo University School of Medicine, Itabashi, Japan
| | - K Kawasugi
- Department of Anesthesiology and Critical Care Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - S Gando
- Research Division of Cell and Molecular Medicine, Center for Molecular Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - S Madoiwa
- Department of Internal Medicine, National Hospital Organization Takasaki General Medical Center, Takasaki, Japan
| | - T Uchiyama
- Department of Emergency Medicine, University of Occupational and Environmental Health School of Medicine, Kitakyushu, Japan
| | - T Mayumi
- Department of Internal Medicine, Shibata Hospital-Niigata Prefectural Hospital, Shibata, Japan
| | | |
Collapse
|
26
|
Shimomura M, Hasegawa S, Seki Y, Fukano R, Hotta N, Ichiyama T. Intravenous immunoglobulin does not increase FcγRIIB expression levels on monocytes in children with immune thrombocytopenia. Clin Exp Immunol 2014. [DOI: 10.1111/cei.12384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
27
|
Sakairi M, Sasaki R, Kaneko A, Seki Y, Nagasawa D. Evaluation of metal cation effects on galvanic corrosion behavior of the A5052 aluminum alloy in low chloride ion containing solutions by electrochemical noise impedance. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.010] [Citation(s) in RCA: 23] [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] [Indexed: 11/28/2022]
|
28
|
Kato TA, Yamauchi Y, Horikawa H, Monji A, Mizoguchi Y, Seki Y, Hayakawa K, Utsumi H, Kanba S. Neurotransmitters, psychotropic drugs and microglia: clinical implications for psychiatry. Curr Med Chem 2014; 20:331-44. [PMID: 23157624 DOI: 10.2174/0929867311320030003] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2012] [Revised: 09/13/2012] [Accepted: 09/27/2012] [Indexed: 11/22/2022]
Abstract
Psychiatric disorders have long and dominantly been regarded to be induced by disturbances of neuronal networks including synapses and neurotransmitters. Thus, the effects of psychotropic drugs such as antipsychotics and antidepressants have been understood to modulate synaptic regulation via receptors and transporters of neurotransmitters such as dopamine and serotonin. Recently, microglia, immunological/inflammatory cells in the brain, have been indicated to have positive links to psychiatric disorders. Positron emission tomography (PET) imaging and postmortem studies have revealed microglial activation in the brain of neuropsychiatric disorders such as schizophrenia, depression and autism. Animal models of neuropsychiatric disorders have revealed the underlying microglial pathologies. In addition, various psychotropic drugs have been suggested to have direct effects on microglia. Until now, the relationship between microglia, neurotransmitters and psychiatric disorders has not been well understood. Therefore, in this review, at first, we summarize recent findings of interaction between microglia and neurotransmitters such as dopamine, serotonin, norepinephrine, acetylcholine and glutamate. Next, we introduce up-to-date knowledge of the effects of psychotropic drugs such as antipsychotics, antidepressants and antiepileptics on microglial modulation. Finally, we propose the possibility that modulating microglia may be a key target in the treatment of various psychiatric disorders. Further investigations and clinical trials should be conducted to clarify this perspective, using animal in vivo studies and imaging studies with human subjects.
Collapse
Affiliation(s)
- T A Kato
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi Higashi-ku, Fukuoka 812-8582, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Seki Y, Nitta K, Kaneko Y. Observation of polyphosphate bodies and DNA during the cell division cycle of Synechococcus elongatus PCC 7942. Plant Biol (Stuttg) 2014; 16:258-263. [PMID: 23574545 DOI: 10.1111/plb.12008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Accepted: 12/21/2012] [Indexed: 06/02/2023]
Abstract
Although most cyanobacterial cells contain prominent polyphosphate bodies in the central cytoplasmic area enclosed by the peripheral thylakoid membranes, their roles are not fully understood. Storing phosphate for nucleotide production might be one of their important roles in survival of the cells. As a step towards identifying a possible contribution of the polyphosphate bodies to DNA synthesis, the relationship between polyphosphate bodies and DNA throughout cell division cycle of Synechococcus elongatus PCC 7942 cells cultured under light/dark cycles was investigated with light and electron microscopy. During the dark period, the average size of polyphosphate bodies increased gradually without significant change in their number and distribution. However, during the light period, the number of polyphosphate bodies increased, while the size of each polyphosphate body decreased and cells elongated until the end of the light period, when most cells divided. The ratio of the content of polyphosphate bodies to cell length increased gradually during the dark period and decreased during the light period. Hoechst 33342-stained DNA appeared diffuse during the dark period, but in the light period it became condensed and eventually formed a wavy, rope-like structure prior to cell division. Close association between fibres containing DNA and polyphosphate bodies was demonstrated by TEM using DNA-specific staining and BrdU labelling. These regular coordinated changes of polyphosphate bodies and DNA shape during the cell division cycle, together with their intimate interaction, imply a role of polyphosphate bodies in supplying material for DNA.
Collapse
Affiliation(s)
- Y Seki
- Graduate School of Science and Engineering, Saitama University, Saitama, Kanagawa, Japan
| | - K Nitta
- Analysis Technology Center, Research and Developmental Management Headquarters, Fuji Photo Film Co. Ltd., Minamiashigara, Kanagawa, Japan
| | - Y Kaneko
- Biology Section in the Faculty of Education; Graduate School of Science and Engineering; Institute for Environmental Science and Technology, Saitama University, Saitama, Japan
| |
Collapse
|
30
|
Ando T, Morimoto S, Mori F, Watanabe D, Seki Y, Niiyama M, Yoshida N, Ono M, Miki N, Ichihara A. CVD Therapy for Unresectable Pheochromocytoma. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
31
|
Abstract
PURPOSE We outline the development of a reliable model of obstructive uropathy in fetal lambs highlighting our understanding of the critical time points for interventions and the variability of any such model. We identify some discoveries that may have clinical implications. METHODS The model requires 60-day-gestation fetal lambs. In lambs, glomerulogenesis is complete by 90 days gestation. (Term is 145 days.) The ability to develop a reliable method of creating bladder outlet obstruction in females, ligating both the urethra and urachus was critical. The lambs are bred to an accuracy of ±24 h. RESULTS Creating the model at 50-60 days gestation, produces different expressions of renal dysplasia in groups of lambs undergoing identical interventions at the same stage of gestation. Early complete urethral obstruction can produce the Potter phenotype. An appropriately timed vesico-amniotic shunt preserves renal development, producing a shrunken, non-compliant bladder. Shunting the normal fetal bladder at 80 days gestation produces a similar bladder. Provision of a low-pressure valve in the shunt preserves bladder development and compliance. Using a high-pressure shunt produces results similar to non-shunted lambs. DISCUSSION We developed a reliable animal model for obstructive uropathy. Being alert to peripheral results can lead to new findings.
Collapse
Affiliation(s)
- K C Pringle
- Department of Obstetrics and Gynaecology, School of Medicine and Health Sciences, University of Otago, Wellington, P.O. Box 7343, Wellington South, 6242, Wellington, New Zealand,
| | | | | | | | | |
Collapse
|
32
|
Otani K, Sakairi M, Sasaki R, Kaneko A, Seki Y, Nagasawa D. Effect of metal cations on corrosion behavior and surface film structure of the A3003 aluminum alloy in model tap waters. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2260-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
33
|
Sakairi M, Otani K, Kaneko A, Seki Y, Nagasawa D. Analysis of chemical compositions and morphology of surface films formed on 3003 aluminum alloy by immersion in different cation containing model tap waters. SURF INTERFACE ANAL 2013. [DOI: 10.1002/sia.5256] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M. Sakairi
- Faculty of Engineering; Hokkaido University; Japan
| | - K. Otani
- Faculty of Engineering; Hokkaido University; Japan
| | - A. Kaneko
- Nikkei Research and Development Center; Nippon Light Metal Co. Ltd.; Japan
| | - Y. Seki
- Nikkei Research and Development Center; Nippon Light Metal Co. Ltd.; Japan
| | - D. Nagasawa
- Nikkei Research and Development Center; Nippon Light Metal Co. Ltd.; Japan
| |
Collapse
|
34
|
A. Kato T, Yamauchi Y, Horikawa H, Monji A, Mizoguchi Y, Seki Y, Hayakawa K, Utsumi H, Kanba S. Neurotransmitters, Psychotropic Drugs and Microglia: Clinical Implications for Psychiatry. Curr Med Chem 2013. [DOI: 10.2174/092986713804870800] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
35
|
Yamamoto N, Nokihara H, Yamada Y, Asahina H, Shibata T, Tamura Y, Seki Y, Honda K, Tanabe Y, Wakui H, Tamura T. Phase I Study of Anti PD-1 Antibody Ono-4538 in Japanese Patients with Advanced Solid Tumors. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)31987-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
36
|
Yamamoto N, Yamada Y, Nokihara H, Asahina H, Shibata T, Tamura Y, Seki Y, Honda K, Tanabe Y, Tamura T. Phase I Study of Ono-4538 (BMS-936558), An Anti PD-1 Antibody, in Japanese Patients with Advanced Solid Tumors. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33018-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
37
|
Shimomura M, Hasegawa S, Seki Y, Fukano R, Hotta N, Ichiyama T. Intravenous immunoglobulin does not increase FcγRIIB expression levels on monocytes in children with immune thrombocytopenia. Clin Exp Immunol 2012; 169:33-7. [PMID: 22670776 DOI: 10.1111/j.1365-2249.2012.04591.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Intravenous immunoglobulin (IVIG) produces a rapid and prolonged increase in the platelet counts of children with immune thrombocytopenia (ITP). The mechanism of IVIG efficacy in a murine model of ITP has been reported to operate through an IVIG-mediated increase in the expression of the inhibitory Fc receptor FcγRIIB(CD32B) on splenic macrophages. This investigation examined whether IVIG administration results in a similar increase in FcγRIIB expression on peripheral blood CD14(+) monocytes in 20 children with ITP. FcγRIIB expression on peripheral blood monocytes was measured by flow cytometry in ITP patients, before and after IVIG therapy, as well as in control subjects. Peripheral blood monocytes were labelled with fluorescent-specific antibodies. There were no significant differences in the absolute number of [corrected] CD14(+) CD32B(+) monocytes, and [corrected] the percentages of CD14(+) CD32B(+) cells in mononuclear cells or monocytes. [corrected]. We suggest that IVIG does not increase FcγRIIB expression in peripheral blood monocytes in children with ITP.
Collapse
Affiliation(s)
- M Shimomura
- Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Ube, Japan.
| | | | | | | | | | | |
Collapse
|
38
|
Seki Y, Yasuda A, Gotou M, Sugiyama T, Yamada K. [Posterior mediastinal hemangioma with extramedullary haematopoieisis]. Kyobu Geka 2012; 65:380-383. [PMID: 22569495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report a very rare coexistence of posterior mediastinal hemangioma with extramedullary haematopoieisis. A 69-year-old woman was detected to have an abnormal mass on the chest radiograph during a routine medical examination. No disorders were found by hematologic exams before and after surgery. Chest computed tomography (CT) revealed a well circumscribed posterior mediastinal tumor measured 32×11 mm in diameter, located on paravertebral space. The most likely diagnosis was a benign neurogenic tumor and we were planning to remove this tumor by video-assisted thoracic surgery (VATS) via a right transthoracic approach. Thoracoscopic finding revealed that this tumor was brownish and soft, such as hemangioma. Initially, incisional biopsy was done to obtain definitive diagnosis. Since intraoperative microscopic examination of the biopsy specimen revealed extramedullary haematopoieisis, we obtained another larger samples and finished the operation. Interestingly, the postoperative final histological diagnosis was mediastinal hemangioma with extramedullary haematopoieis.
Collapse
Affiliation(s)
- Y Seki
- Department of Surgery, Nagoya Medical Center, Japan
| | | | | | | | | |
Collapse
|
39
|
Murakami H, Tamura T, Takahashi T, Nokihara H, Naito T, Nakamura Y, Nishio K, Seki Y, Sarashina A, Shahidi M, Yamamoto N. Phase I study of continuous afatinib (BIBW 2992) in patients with advanced non-small cell lung cancer after prior chemotherapy/erlotinib/gefitinib (LUX-Lung 4). Cancer Chemother Pharmacol 2011; 69:891-9. [PMID: 22071596 DOI: 10.1007/s00280-011-1738-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Accepted: 08/31/2011] [Indexed: 11/30/2022]
Abstract
PURPOSE This Phase I study determined the maximum-tolerated dose (MTD) of afatinib (Afatinib is an investigational compound and its safety and efficacy have not yet been established) (BIBW 2992; trade name not yet approved by FDA), an irreversible inhibitor of epidermal growth factor receptor (EGFR)/human epidermal growth factor receptor (HER)1 and 2, up to a dose of 50 mg/day in advanced non-small cell lung cancer (NSCLC), to establish the recommended dose for Phase II. METHODS Patients with advanced NSCLC who had received prior platinum-doublet chemotherapy and/or erlotinib/gefitinib therapy, or who were ineligible for, or not amenable to, treatment with established therapies, received oral afatinib once daily. The MTD was determined based on dose-limiting toxicities (DLTs); other assessments included safety, pharmacokinetic profile, antitumour activity according to response evaluation criteria in solid tumours and EGFR/HER1 mutation analysis where possible. RESULTS Twelve evaluable patients were treated at doses of 20-50 mg/day. One DLT was observed at 50 mg/day in Course 1 (Grade 3 mucositis). The most frequent drug-related adverse events were diarrhoea, dry skin, stomatitis, rash, paronychia and anorexia; most were Grade 1 or 2. Six out of 12 patients had tumour size reductions; durable stable disease was achieved in three patients including one with EGFR/HER1 exon 19 and T790 M mutations. Peak plasma concentrations of afatinib were reached 3-4 h after administration and declined with a half-life of 30-40 h. Afatinib 50 mg/day was well tolerated with an acceptable safety profile during Phase I. CONCLUSION Recommended dose for Phase II was defined as 50 mg/day for Japanese patients; the same as for non-Japanese patients.
Collapse
Affiliation(s)
- H Murakami
- Division of Thoracic Oncology, Shizuoka Cancer Center, 1007 Shimonagakubo Nagaizumi-cho Sunto-gun, Shizuoka 411-8777, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Seki Y, Yokohama M, Ishikawa D, Ikehara N, Wada K, Nomura K, Amano T, Kikkawa Y. Development and characterization of 260 microsatellite loci in the domestic goat, Capra hircus. Anim Genet 2011; 43:365-6. [PMID: 22486517 DOI: 10.1111/j.1365-2052.2011.02262.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Y Seki
- Department of Bioproduction, Tokyo University of Agriculture, Hokkaido, Japan
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Nishimura T, Tanaka J, Tomi M, Seki Y, Kose N, Sai Y, Nakashima E. Enhancement of Zidovudine Transfer to Molt-4 Cells, a Human T-Cell Model, by Dehydroepiandrosterone Sulfate. J Pharm Sci 2011; 100:3959-67. [DOI: 10.1002/jps.22624] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 04/07/2011] [Accepted: 04/26/2011] [Indexed: 11/10/2022]
|
42
|
Mizoguchi Y, Monji A, A. Kato T, Horikawa H, Seki Y, Kasai M, Kanba S, Yamada S. Possible Role of BDNF-Induced Microglial Intracellular Ca 2+ Elevation in the Pathophysiology of Neuropsychiatric Disorders. Mini Rev Med Chem 2011; 11:575-81. [DOI: 10.2174/138955711795906932] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 03/17/2011] [Indexed: 11/22/2022]
|
43
|
Kato TA, Monji A, Mizoguchi Y, Hashioka S, Horikawa H, Seki Y, Kasai M, Utsumi H, Kanba S. Anti-Inflammatory properties of antipsychotics via microglia modulations: are antipsychotics a 'fire extinguisher' in the brain of schizophrenia? Mini Rev Med Chem 2011; 11:565-74. [PMID: 21699487 DOI: 10.2174/138955711795906941] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2011] [Accepted: 03/30/2011] [Indexed: 11/22/2022]
Abstract
Schizophrenia is one of the most severe psychiatric diseases noted for its chronic and often debilitating processes; affecting approximately 1% of the world's population, while its etiology and therapeutic strategies still remain elusive. In the 1950s, the discovery of antipsychotic effects of haloperidol and chlorpromazine shifted the paradigm of schizophrenia. These drugs proved to be antagonists of dopamine D2 receptor (D2R), thus dopamine system dysfunction came to be hypothesized in the pathophysiology of schizophrenia, and D2R antagonism against dopamine neurons has been considered as the primary therapeutic target for schizophrenia. In addition, abnormalities of glutamatergic neurons have been indicated in the pathophysiology of schizophrenia. On the other hand, recent neuroimaging studies have shown that not only dementia but also schizophrenic patients have a significant volume reduction of some specific regions in the brain, which indicates that schizophrenia may involve some neurodegenerative process. Microglia, major sources of various inflammatory cytokines and free radicals such as superoxide and nitric oxide (NO) in the CNS, play a crucial role in a variety of neurodegenerative diseases such as dementia. Recent postmortem and positron emission computed tomography (PET) studies have indicated that activated microglia may be present in schizophrenic patients. Recent in vitro studies have suggested the anti-inflammatory effects of antipsychotics on microglial activation. In this article, we review the anti-inflammatory effects of antipsychotics on microglia, and propose a novel therapeutic hypothesis of schizophrenia from the perspective of microglial modulation.
Collapse
Affiliation(s)
- T A Kato
- Department of Neuropsychiatry, Graduate School of Medical Sciences, and Innovation Center for Medical Redox Navigation, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Yamamoto N, Katakami N, Atagi S, Hida T, Goto K, Horai T, Inoue A, Ichinose Y, Kobayashi K, Takeda K, Kiura K, Saka H, Tamura T, Okamoto I, Nogami N, Morinaga R, Nishio K, Seki Y, Lorence RM, Shahidi M. A phase II trial of afatinib (BIBW 2992) in patients (pts) with advanced non-small cell lung cancer previously treated with erlotinib (E) or gefitinib (G). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7524] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
45
|
Nokihara H, Yamamoto N, Yamada Y, Asahina H, Shibata T, Seki Y, Tamura Y, Honda K, Misawa S, Tamura T. 415 A phase I study evaluating the safety profile and pharmacokinetics of CS-1008 (Tigatuzumab), humanized monoclonal antibody targeting death receptor 5 (DR5), in Japanese patients with advanced solid tumours. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)72122-4] [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] Open
|
46
|
Abstract
1. Glucose transporter (GLUT) proteins, one of which is the major insulin-responsive transporter GLUT4, play a crucial role in cellular glucose uptake and glucose homeostasis in mammals. The aim of this study was to identify the extent of mRNA expression of GLUT1, GLUT2, GLUT3 and GLUT8 in chickens intrinsically lacking GLUT4. 2. GLUT1 mRNA was detected in most tissues of 3-week-old broiler chickens, with the highest expression measured in brain and adipose tissue. GLUT2 was expressed only in the liver and kidney. GLUT3 was highly expressed in the brain. GLUT8 was expressed ubiquitously, with expression in kidney and adipose tissue relatively higher than that of other tissues. 3. Expression levels of GLUT isoforms 1, 3 and 8 in skeletal muscle tissue were very low compared to the other tissues tested. 4. [3H]Cytochalasin B binding assays on tissue from 3-week-old chickens showed that the number of cytochalasin B binding sites in skeletal muscle plasma membranes was higher than in liver plasma membranes. These results suggest that GLUT proteins and/or GLUT-like proteins that bind cytochalasin B are expressed in chicken skeletal muscles. 5. It is proposed that GLUT expression and glucose transport in chicken tissues are regulated in a manner different from that in mammals.
Collapse
Affiliation(s)
- T Kono
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | | | | | | | | | | |
Collapse
|
47
|
Abstract
Sixty-one Japanese with sexually transmitted HIV were investigated to clarify the state of, and difficulties in, their sexual activities and social relationships. The study revealed the following difficulties in social relationships due to HIV infection. Thirty-one per cent had experienced discrimination or breach of confidentiality. Self-restriction due to anxiety over discrimination was observed in approximately 90%, and the self-restriction score tended to be higher in those who were not employed, those with economic problems, those who were in a relatively poor state of health, those who had developed AIDS and those who had previously experienced discrimination or breach of confidentiality. The experience of discrimination or breach of confidentiality, and the experience of receiving negative support tended to increase as the respondents had a wider emotional support network. About 60% were dissatisfied with their sex lives, and the degree of satisfaction was significantly lower in those who had fewer sexual contacts and those who had a suppressive attitude toward sexual contacts. A low degree of satisfaction with sex life was found to be an important factor that escalates the level of depression or anxiety.
Collapse
Affiliation(s)
- Y Inoue
- Department of Health Sociology, School of Health Sciences and Nursing, University of Tokyo, Tokyo, Japan.
| | | | | | | | | |
Collapse
|
48
|
Fecchio R, Seki Y, Bodde S, Gomes M, Kolososki J, Rossi J, Gioso M, Meyers M. Mechanical behavior of prosthesis in Toucan beak (Ramphastos toco). Materials Science and Engineering: C 2010. [DOI: 10.1016/j.msec.2010.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
49
|
Affiliation(s)
- B. Lefebvre
- Space Science Center; University of New Hampshire; Durham New Hampshire USA
| | - Y. Seki
- Institute of Space and Astronautical Science; Japan Aerospace Exploration Agency; Sagamihara Japan
| | - S. J. Schwartz
- Space and Atmospheric Physics, Blackett Laboratory; Imperial College London; London UK
| | | | - E. A. Lucek
- Space and Atmospheric Physics, Blackett Laboratory; Imperial College London; London UK
| |
Collapse
|
50
|
Meyers M, Lim C, Li A, Hairul Nizam B, Tan E, Seki Y, McKittrick J. The role of organic intertile layer in abalone nacre. Materials Science and Engineering: C 2009. [DOI: 10.1016/j.msec.2009.07.005] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|