26
|
Tanabe S, Onodera H, Hara N, Ishii-Minami N, Day B, Fujisawa Y, Hagio T, Toki S, Shibuya N, Nishizawa Y, Minami E. The elicitor-responsive gene for a GRAS family protein, CIGR2, suppresses cell death in rice inoculated with rice blast fungus via activation of a heat shock transcription factor, OsHsf23. Biosci Biotechnol Biochem 2016; 80:145-51. [DOI: 10.1080/09168451.2015.1075866] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Abstract
We show that a rice GRAS family protein, CIGR2, is a bonafide transcriptional activator, and through this function, targets the B-type heat shock protein-encoding gene OsHsf23 (Os09g0456800). CIGR2 (Os07g0583600) is an N-acetylchitooligosaccharide elicitor-responsive gene whose activity, through the direct transcriptional control of OsHsf23, is required for mediating hypersensitive cell death activation during pathogen infection. RNAi lines of CIGR2 and OsHsf23 similarly exhibited the higher level of granulation in the epidermal cells of leaf sheath inoculated with an avirulent isolate of rice blast fungus. Interestingly, we did not observe altered levels of resistance, suggesting that CIGR2 suppresses excessive cell death in the incompatible interaction with blast fungus via activation of OsHsf23.
Collapse
|
27
|
Mahlik S, Lazarowska A, Ueda J, Tanabe S, Grinberg M. Spectroscopic properties and location of the Ce3+ energy levels in Y3Al2Ga3O12 and Y3Ga5O12 at ambient and high hydrostatic pressure. Phys Chem Chem Phys 2016; 18:6683-90. [DOI: 10.1039/c5cp07732j] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we present optical properties and location of the Ce3+ energy levels in Y3Al2Ga3O12 (YAGG) and Y3Ga5O12 (YGG) ceramics at ambient and high hydrostatic pressure.
Collapse
|
28
|
Ohta A, Tanabe S, Utsunomiya S, Tanaka K, Sato H, Maruyama K, Kawaguchi G, Kaidu M, Sasamoto R, Aoyama H. Respiratory Gating Intermittent Radiation for Esophageal Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
29
|
Koyama S, Tanabe S, Saitoh E, Hirano S, Shimizu Y, Katoh M, Uno A, Takemitsu T. Characterization of unexpected postural changes during robot-assisted gait training in paraplegic patients. Spinal Cord 2015; 54:120-5. [PMID: 26261073 DOI: 10.1038/sc.2015.138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/03/2015] [Accepted: 06/22/2015] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN This is a retrospective study. OBJECTIVES The objectives of this study were to categorize unexpected postural changes (UPCs) during gait training in paraplegic patients with wearable gait-assist robots, to reveal the incidence of the UPC and its time-dependent changes during initial gait training period and to investigate neurological level-specific differences. SETTING This study was conducted in Fujita Health University, Aichi, Japan. METHODS We investigated five patients (46.2±14.6 years; lesion level: T6:3, T12:2). All patients had previously achieved gait with wearable robot and walker at supervision level. The UPCs were counted for 2 years and classified according to their type. The time-course data were calculated from the incidence of UPCs for 10 days from initial gait training with the walker. The neurological level-specific differences were investigated between T6 and T12 injuries. RESULTS Eighty-five UPCs were observed and classified into three categories: anterior breakdown, posterior breakdown (PBD) and mal-timing. The average rate over the entire period was 0.96±0.62 (incidents/h/subject). PBD, which was defined as hyperflexion of both hip joints, occurred with the highest frequency (0.64±0.64 incidents/h/subject). During initial gait training, there was a gradual decrease in the occurrence of UPC. For neurological level-specific differences, UPCs were observed more frequently in T6 injuries (1.36±0.35 incidents/h/subject) compared with T12 injuries (0.36±0.31 incidents/h/subject). CONCLUSION PBDs might be the result of near collisions between the trunk of the user and the walker, which make it difficult for the users to move their trunk over an anterior stance limb. Training that is focused upon well-timed forward movements of the walker might be required to avoid the occurrence of this common UPC.
Collapse
|
30
|
Tanabe S, Utsunomiya S, Abe E, Satou H, Sakai H, Yamada T, Aoyama H. SU-E-J-24: Can Fiducial Marker-Based Setup Using ExacTrac Be An Alternative to Soft Tissue-Based Setup Using Cone-Beam CT for Prostate IMRT? Med Phys 2015. [DOI: 10.1118/1.4924111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
31
|
Kohsaka K, Yoneda K, Ito T, Tanabe S. An attempt to inoculate Mycobacterium leprae into 'rhino' mice. EXPERIMENTAL CELL BIOLOGY 2015; 52:150-3. [PMID: 6365647 DOI: 10.1159/000408611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
32
|
Miyamoto Y, Nanto H, Kurobori T, Fujimoto Y, Yanagida T, Ueda J, Tanabe S, Yamamoto T. RPL in alpha particle irradiated Ag+-doped phosphate glass. RADIAT MEAS 2014. [DOI: 10.1016/j.radmeas.2014.08.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
33
|
Myojin M, Tanabe S, Harada K, Shirato H, Hosokawa M. The Significance of 3DCRT/VMAT Hybrid Plan to Reduce Pericardial Toxicity After Chemoradiation for Thoracic Esophageal Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
34
|
Ishido K, Higuchi K, Azuma M, Sasaki T, Tanabe S, Katada C, Koizumi W. Aprepitant, Granisetron and Dexamethasone Versus Palonosetron and Dexamethasone for Cisplatin-Induced Nausea and Vomiting in Patients with Upper Gastrointestinal Cancer: a Randomized Crossover Phase Ii Trial (Kdog 1002). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu356.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
35
|
Katada C, Muto M, Tanabe S, Higuchi K, Sasaki T, Azuma M, Ishido K, Katada N, Sakuramoto S, Yamashita K, Masaki T, Nakayama M, Okamoto M, Koizumi W. Factors associated with the presence of multiple Lugol-voiding lesions in patients with esophageal squamous-cell carcinoma. Dis Esophagus 2014; 27:457-62. [PMID: 23009284 DOI: 10.1111/j.1442-2050.2012.01429.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Multicentric squamous dysplasia of the esophagus is characterized by multiple Lugol-voiding lesions (LVLs) on Lugol chromoendoscopy. Multiple LVLs are associated with a very high risk of multiple cancers arising in the esophagus as well as the head and neck. To gain insight into the pathogenesis of multiple LVLs of the esophageal mucosa, we studied risk factors for the development of such lesions in 76 patients who had a current or previous diagnosis of esophageal squamous cell carcinoma. All patients underwent Lugol chromoendoscopy of the esophageal mucosa. The history of tobacco and alcohol use was documented. Polymorphisms of the aldehyde dehydrogenase type 2 (ALDH2) gene were identified by polymerase chain reaction using sequence-specific primers. Clinical factors related to multiple LVLs were analyzed. All patients with multiple LVLs were drinkers. On univariate analysis, male sex (odds ratio [OR] 15, 95% confidence interval [CI] 1.84-122.45: P = 0.011), presence of the ALDH2-2 allele (OR 4.5, 95% CI 1.55-13.24: P = 0.006), and smoking index ≥1000 (OR 2.6, 95% CI 1.02-6.6: P = 0.045) were associated with multiple LVLs. On multivariate analysis, male sex (OR 10.02, 95% CI 1.13-88.44: P = 0.038) and presence of the ALDH2-2 allele (OR 4.56, 95% CI 1.4-14.82: P = 0.012) were associated with multiple LVLs. Among drinkers, a daily alcohol intake of ≥100 g pure ethanol with the ALDH2-2 allele (OR 17.5, 95% CI 1.97-155.59: P = 0.01) and a daily alcohol intake of <100 g pure ethanol with the ALDH2-2 allele (OR 8.85, 95% CI 1.68-46.69: P = 0.01) more strongly correlated with multiple LVLs than did a daily alcohol intake of <100 g pure ethanol without the ALDH2-2 allele, whereas a daily alcohol intake of ≥100 g pure ethanol without the ALDH2-2 allele (OR 4.0, 95% CI 0.54-29.81: P = 0.18) did not. In conclusion, male sex and the ALDH2-2 allele are associated with an increased risk for multiple LVLs of the esophageal mucosa in patients with esophageal squamous cell carcinoma. Among drinkers with the ALDH2-2 allele, the risk of multiple LVLs increased in parallel to the daily alcohol intake.
Collapse
|
36
|
Hirabayashi S, Kosugi S, Isobe Y, Nashimoto A, Oda I, Hayashi K, Miyashiro I, Tsujitani S, Kodera Y, Seto Y, Furukawa H, Ono H, Tanabe S, Kaminishi M, Nunobe S, Fukagawa T, Matsuo R, Nagai T, Katai H, Wakai T, Akazawa K. Development and external validation of a nomogram for overall survival after curative resection in serosa-negative, locally advanced gastric cancer. Ann Oncol 2014; 25:1179-84. [PMID: 24669009 DOI: 10.1093/annonc/mdu125] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Few nomograms can predict overall survival (OS) after curative resection of advanced gastric cancer (AGC), and these nomograms were developed using data from only a few large centers over a long time period. The aim of this study was to develop and externally validate an elaborative nomogram that predicts 5-year OS after curative resection for serosa-negative, locally AGC using a large amount of data from multiple centers in Japan over a short time period (2001-2003). PATIENTS AND METHODS Of 39 859 patients who underwent surgery for gastric cancer between 2001 and 2003 at multiple centers in Japan, we retrospectively analyzed 5196 patients with serosa-negative AGC who underwent Resection A according to the 13th Japanese Classification of Gastric Carcinoma. The data of 3085 patients who underwent surgery from 2001 to 2002 were used as a training set for the construction of a nomogram and Web software. The data of 2111 patients who underwent surgery in 2003 were used as an external validation set. RESULTS Age at operation, gender, tumor size and location, macroscopic type, histological type, depth of invasion, number of positive and examined lymph nodes, and lymphovascular invasion, but not the extent of lymphadenectomy, were associated with OS. Discrimination of the developed nomogram was superior to that of the TNM classification (concordance indices of 0.68 versus 0.61; P < 0.001). Moreover, calibration was accurate. CONCLUSIONS We have developed and externally validated an elaborative nomogram that predicts the 5-year OS of postoperative serosa-negative AGC. This nomogram would be helpful in the assessment of individual risks and in the consideration of additional therapy in clinical practice, and we have created freely available Web software to more easily and quickly predict OS and to draw a survival curve for these purposes.
Collapse
|
37
|
Tanabe S. Spatial Regulation of Defense-Related Genes Revealed by Expression Analysis using Dissected Tissues of Rice Leaves Inoculated with Magnaporthe oryzae. ACTA ACUST UNITED AC 2014. [DOI: 10.4172/2329-955x.1000135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
38
|
Ishii K, Kurasawa K, Tanabe S, Noguchi T. Complementary cooperation of an ambulance helicopter and car with medical doctors: meaning of simultaneous dispatch. Crit Care 2014. [PMCID: PMC4068871 DOI: 10.1186/cc13260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
39
|
Fujiwara Y, Yamada T, Naomoto Y, Yamatsuji T, Shirakawa Y, Tanabe S, Noma K, Kimura T, Aoki H, Matsukawa H, Kimura M, Nonaka Y, Sasaki H, Onoda T, Otawa Y, Takaoka M, Fukazawa T, Ohno Y, Fujiwara T. Multicentred surgical site infection surveillance using partitioning analysis. J Hosp Infect 2013; 85:282-8. [DOI: 10.1016/j.jhin.2013.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Accepted: 08/04/2013] [Indexed: 10/26/2022]
|
40
|
de Dear RJ, Akimoto T, Arens EA, Brager G, Candido C, Cheong KWD, Li B, Nishihara N, Sekhar SC, Tanabe S, Toftum J, Zhang H, Zhu Y. Progress in thermal comfort research over the last twenty years. INDOOR AIR 2013; 23:442-461. [PMID: 23590514 DOI: 10.1111/ina.12046] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 04/10/2013] [Indexed: 06/02/2023]
Abstract
Climate change and the urgency of decarbonizing the built environment are driving technological innovation in the way we deliver thermal comfort to occupants. These changes, in turn, seem to be setting the directions for contemporary thermal comfort research. This article presents a literature review of major changes, developments, and trends in the field of thermal comfort research over the last 20 years. One of the main paradigm shift was the fundamental conceptual reorientation that has taken place in thermal comfort thinking over the last 20 years; a shift away from the physically based determinism of Fanger's comfort model toward the mainstream and acceptance of the adaptive comfort model. Another noticeable shift has been from the undesirable toward the desirable qualities of air movement. Additionally, sophisticated models covering the physics and physiology of the human body were developed, driven by the continuous challenge to model thermal comfort at the same anatomical resolution and to combine these localized signals into a coherent, global thermal perception. Finally, the demand for ever increasing building energy efficiency is pushing technological innovation in the way we deliver comfortable indoor environments. These trends, in turn, continue setting the directions for contemporary thermal comfort research for the next decades.
Collapse
|
41
|
Tanabe S, Yoshioka M, Hinode D, Grenier D. Subinhibitory concentrations of tetracyclines induce lipopolysaccharide shedding by Porphyromonas gingivalis
and modulate the host inflammatory response. J Periodontal Res 2013; 49:603-8. [DOI: 10.1111/jre.12140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2013] [Indexed: 02/06/2023]
|
42
|
Yokotani N, Sato Y, Tanabe S, Chujo T, Shimizu T, Okada K, Yamane H, Shimono M, Sugano S, Takatsuji H, Kaku H, Minami E, Nishizawa Y. WRKY76 is a rice transcriptional repressor playing opposite roles in blast disease resistance and cold stress tolerance. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:5085-97. [PMID: 24043853 PMCID: PMC3830488 DOI: 10.1093/jxb/ert298] [Citation(s) in RCA: 176] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
OsWRKY76 encodes a group IIa WRKY transcription factor of rice. The expression of OsWRKY76 was induced within 48h after inoculation with rice blast fungus (Magnaporthe oryzae), and by wounding, low temperature, benzothiadiazole, and abscisic acid. Green fluorescent protein-fused OsWRKY76 localized to the nuclei in rice epidermal cells. OsWRKY76 showed sequence-specific DNA binding to the W-box element in vitro and exhibited W-box-mediated transcriptional repressor activity in cultured rice cells. Overexpression of OsWRKY76 in rice plants resulted in drastically increased susceptibility to M. oryzae, but improved tolerance to cold stress. Microarray analysis revealed that overexpression of OsWRKY76 suppresses the induction of a specific set of PR genes and of genes involved in phytoalexin synthesis after inoculation with blast fungus, consistent with the observation that the levels of phytoalexins in the transgenic rice plants remained significantly lower than those in non-transformed control plants. Furthermore, overexpression of OsWRKY76 led to the increased expression of abiotic stress-associated genes such as peroxidase and lipid metabolism genes. These results strongly suggest that OsWRKY76 plays dual and opposing roles in blast disease resistance and cold tolerance.
Collapse
|
43
|
Myojin M, Hosokawa M, Tanabe S, Takahashi H, Nishikawa N, Shimizu S. The Common Late Toxicities Observed After Definitive Chemoradiation Therapy for Esophageal Cancer. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
44
|
Fujita S, Chiba I, Ishizuka M, Hoshi H, Iwata H, Sakakibara A, Tanabe S, Kazusaka A, Masuda M, Masuda Y, Nakagawa H. P450 in wild animals as a biomarker of environmental impact. Biomarkers 2013; 6:19-25. [PMID: 23886053 DOI: 10.1080/135475001452751] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
The impact of environmental pollution on selected animals was tested by monitoring the hepatic content of cytochromes P450 and their enzyme activities or by calculating TEQ values from the concentration of pollutants in the body. Fish-eating Stellars Sea Eagles, Haliaeetus pelagicus, found dead in the northern part of Hokkaido island accumulated high levels of PCBs and DDT and metabolites. The TEQ values calculated from the PCB concentration in the eagles were high enough to cause a significant toxic effect in other birds living in the same environment. Some of these birds were also contaminated with high concentrations of lead. Spotted seals, Phoca largha, captured along the coast-line of Hokkaido accumulated PCBs in their fat at about 100 million times the concentrations in the surface sea water. The levels of expressions of hepatic microsomal CYP 1A1and related enzyme activities in these seals showed good correlation to the levels of PCBs accumulated in the fat. The fresh water crabs, Eriocheir japonicus, were captured from three different rivers with various degrees of pollution. The P450 content and the related enzyme activities showed good correlation to TEQ values obtained from the concentrations of PCBs and PCDDs in the crabs from the rivers. The wild rodents, Clethrionomys rufocanus, were captured from urban, agricultural, and forest areas in Hokkaido. Those from the forest area had the lowest CYP content and related enzyme activities, comparable to those in laboratory-raised animals. Those from the urban areas, presumably contaminated with PAHs from fuel combustion, showed increased CYP 1A1 content and related enzyme activities. Those from the agricultural areas showed increased levels of CYP 1A1, 2B, 2E1. Rats treated with some of the agrochemicals used in the area resulted in a similar pattern of induction. It is concluded that P450 can be a useful biomarker for assessing the environmental impact of chemical pollutants on wild animals.
Collapse
|
45
|
Ishii H, Tanabe S, Ueno M, Kubo T, Kayama H, Serada S, Fujimoto M, Takeda K, Naka T, Yamashita T. ifn-γ-dependent secretion of IL-10 from Th1 cells and microglia/macrophages contributes to functional recovery after spinal cord injury. Cell Death Dis 2013; 4:e710. [PMID: 23828573 PMCID: PMC3730408 DOI: 10.1038/cddis.2013.234] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 05/06/2013] [Accepted: 06/03/2013] [Indexed: 01/23/2023]
Abstract
Transfer of type-1 helper T-conditioned (Th1-conditioned) cells promotes functional recovery with enhanced axonal remodeling after spinal cord injury (SCI). This study explored the molecular mechanisms underlying the beneficial effects of pro-inflammatory Th1-conditioned cells after SCI. The effect of Th1-conditioned cells from interferon-γ (ifn-γ) knockout mice (ifn-γ−/− Th1 cells) on the recovery after SCI was reduced. Transfer of Th1-conditioned cells led to the activation of microglia (MG) and macrophages (MΦs), with interleukin 10 (IL-10) upregulation. This upregulation of IL-10 was reduced when ifn-γ−/− Th1 cells were transferred. Intrathecal neutralization of IL-10 in the spinal cord attenuated the effects of Th1-conditioned cells. Further, IL-10 is robustly secreted from Th1-conditioned cells in an ifn-γ-dependent manner. Th1-conditioned cells from interleukin 10 knockout (il-10−/−) mice had no effects on recovery from SCI. These findings demonstrate that ifn-γ-dependent secretion of IL-10 from Th1 cells, as well as native MG/MΦs, is required for the promotion of motor recovery after SCI.
Collapse
|
46
|
Ishikawa M, Tanabe S, Yamaguchi S, Ukon N, Yamanaka T, Sutherland K, Miyamoto N, Suzuki R, Katoh N, Yasuda K, Shirato H. SU-E-J-57: A Feasibility Study On Molecular-Imaging-Based Real-Time Tumor Tracking for Gated Radiotherapy. Med Phys 2013. [DOI: 10.1118/1.4814269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
47
|
Ishikawa M, Kojima H, Tachibana H, Tanabe S, Suzuki R, Minemura T, Tohyama N, Narita Y, Nishio T, Ishikura S. SU-E-T-184: Practical Method of Scanner Stability Compensation for Film Dosimetry. Med Phys 2013. [DOI: 10.1118/1.4814619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
48
|
Shimano R, Yumoto G, Yoo JY, Matsunaga R, Tanabe S, Hibino H, Morimoto T, Aoki H. Quantum Faraday and Kerr rotations in graphene. Nat Commun 2013; 4:1841. [DOI: 10.1038/ncomms2866] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 04/12/2013] [Indexed: 12/27/2022] Open
|
49
|
Kumada N, Tanabe S, Hibino H, Kamata H, Hashisaka M, Muraki K, Fujisawa T. Plasmon transport in graphene investigated by time-resolved electrical measurements. Nat Commun 2013; 4:1363. [PMID: 23322051 PMCID: PMC3562445 DOI: 10.1038/ncomms2353] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 12/03/2012] [Indexed: 11/08/2022] Open
Abstract
Plasmons, which are collective charge oscillations, could provide a means of confining electromagnetic field to nanoscale structures. Recently, plasmonics using graphene have attracted interest, particularly because of the tunable plasmon dispersion, which will be useful for tunable frequency in cavity applications. However, the carrier density dependence of the dispersion is weak (proportional to n(1/4)) and it is difficult to tune the frequency over orders of magnitude. Here, by exploiting electronic excitation and detection, we carry out time-resolved measurements of a charge pulse travelling in a plasmon mode in graphene corresponding to the gigahertz range. We demonstrate that the plasmon velocity can be changed over two orders of magnitude by applying a magnetic field B and by screening the plasmon electric field with a gate metal; at high B, edge magnetoplasmons, which are plasmons localized at the sample edge, are formed and their velocity depends on B, n and the gate screening effect.
Collapse
|
50
|
Ishii H, Jin X, Ueno M, Tanabe S, Kubo T, Serada S, Naka T, Yamashita T. Adoptive transfer of Th1-conditioned lymphocytes promotes axonal remodeling and functional recovery after spinal cord injury. Cell Death Dis 2012; 3:e363. [PMID: 22875000 PMCID: PMC3434665 DOI: 10.1038/cddis.2012.106] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The role of T lymphocytes in central nervous system (CNS) injuries is controversial, with inconsistent results reported concerning the effects of T-lymphocyte transfer on spinal cord injury (SCI). Here, we demonstrate that a specific T-lymphocyte subset enhances functional recovery after contusion SCI in mice. Intraperitoneal adoptive transfer of type 1 helper T (Th1)-conditioned cells 4 days after SCI promoted recovery of locomotor activity and tactile sensation and concomitantly induced regrowth of corticospinal tract and serotonergic fibers. However, neither type 2 helper T (Th2)- nor IL-17-producing helper T (Th17)-conditioned cells had such effects. Activation of microglia and macrophages were observed in the spinal cords of Th1-transfered mice after SCI. Specifically, M2 subtype of microglia/macrophages was upregulated after Th1 cell transfer. Neutralization of interleukin 10 secreted by Th1-conditioned cells significantly attenuated the beneficial effects by Th1-conditioned lymphocytes after SCI. We also found that Th1-conditioned lymphocytes secreted significantly higher levels of neurotrophic factor, neurotrophin 3 (NT-3), than Th2- or Th17-conditioned cells. Thus, adoptive transfer of pro-inflammatory Th1-conditioned cells has neuroprotective effects after SCI, with prospective implications in immunomodulatory treatment of CNS injury.
Collapse
|