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Katoh N, Nakazato K, Uchinami Y, Kanehira T, Takahashi S, Koizumi F, Taguchi H, Nishioka K, Yasuda K, Tamura M, Takao S, Miyamoto N, Matsuura T, Kobashi K, Aoyama H. Evaluation of the Possibility of Dose Realignment Adaptation by Shifting the Isocenter in Proton Beam Therapy for Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e307. [PMID: 37785114 DOI: 10.1016/j.ijrobp.2023.06.2330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) In pancreatic cancer, a tumor is surrounded by the gastrointestinal (GI) tract, which is subject to changes in location, shape, and contents. Due to these inter-fractional changes, proton beam therapy (PBT) for pancreatic cancer may result in unintentionally high doses to the GI tract. Daily adaptive re-planning can solve this problem, but is not yet established with PBT due to its resource intensive characteristics. This study aims to evaluate the GI tract dose using weekly computed tomography (CTw) and the possibility of dose realignment adaptation by shifting the isocenter (IC) of the PBT plan, which does not require re-planning. MATERIALS/METHODS We retrospectively analyzed 6 consecutive patients with unresectable pancreatic cancer treated with real-time-image gated PBT using a fiducial marker. The planning CT was scanned at the natural expiration of respiration and a PBT plan of 60 GyE in 25 fractions (baseline plan, PLANbase) was created. The CTw images were acquired the day before start of PBT and once a week during the PBT course thereafter. The PLANbase was rigidly transferred to the CTw based on the relationship between the three-dimensional coordinates of the fiducial marker and those of the IC in the PLANbase. The PLANeval was created by recalculating the PLANbase on the CTw. We evaluated the doses to the stomach, duodenum, and intestines in the PLANeval according to the following criteria: Dmax of the stomach < 60 GyE, duodenum and intestines < 55 GyE, and D1cc of the stomach < 55 GyE, duodenum and intestines < 54 GyE. In addition, we investigated the GI tract dose realignment adaptation for the PLANeval with its IC shifted 2mm, 4mm, and 6mm in each of 6 directions (right, left, ventral, dorsal, cranial, and caudal), respectively. RESULTS A total of 35 PLANeval were created for the CTw. In the PLANbase of the 6 patients, the average of Dmax and D1cc of the stomach, duodenum and intestines were 50.7 GyE (range, 46.7-53.6) and 50.0 GyE (45.0-53.2), 49.2 GyE (44.3-51.7) and 48.8 GyE (43.7-51.5), and 49.2 GyE (44.8-52.0) and 48.9 GyE (44.6-51.8), respectively. In the PLANeval, the average of Dmax and D1cc of the stomach, duodenum, and intestines were 53.3GyE (43.8-61.4) and 52.8 GyE (43.2-61.1), 51.0 GyE (36.1-60.0) and 50.3 GyE (35.4-59.8), and 52.5 GyE (36.6-61.0) and 51.9 (34.4-60.9) GyE, respectively. Twenty-two of the 35 PLANeval (63 %) did not meet at least one of the GI tract dose criteria. In 11 of 22 PLANeval with higher doses to the GI tract, the IC shift resulted in GI dose reductions and all dose criteria were met. The minimum amount of the IC shift required to meet the criteria was 2 mm for 8 plans and 4 mm for 3 plans. The remaining 11 PLANeval did not meet the criteria using dose realignment adaptation by shifting the isocenter. CONCLUSION Adaptive replanning is necessary for PBT for pancreatic cancers due to excessive GI tract doses in more than 60% of the plans. Dose realignment adaptation by shifting the IC, which does not require re-planning, may be an option in adaptive treatment strategies.
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Affiliation(s)
- N Katoh
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - K Nakazato
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - Y Uchinami
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Kanehira
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - S Takahashi
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - F Koizumi
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Taguchi
- Department of Radiation Oncology, Hokkaido University Hospital, Sapporo, Japan
| | - K Nishioka
- Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - K Yasuda
- Department of Radiation Oncology, Hokkaido University Hospital, Sapporo, Japan
| | - M Tamura
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - S Takao
- Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - N Miyamoto
- Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - T Matsuura
- Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - K Kobashi
- Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - H Aoyama
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
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Koizumi F, Katoh N, Kanehira T, Kawamoto Y, Nakamura T, Kakisaka T, Uchinami Y, Taguchi H, Fujita Y, Takahashi S, Higaki H, Nishioka K, Yasuda K, Kinoshita R, Suzuki R, Miyamoto N, Yokota I, Kobashi K, Aoyama H. A Risk Prediction Model for Severe Radiation Induced Lymphopenia in Patients with Pancreatic Cancer Treated with Concurrent Chemoradiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e309. [PMID: 37785118 DOI: 10.1016/j.ijrobp.2023.06.2334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) In pancreatic cancer, radiation induced lymphopenia (RIL) is associated with a poor prognosis. However, normal tissue complication probability (NTCP) models predicting RIL in pancreatic cancer treated with concurrent chemoradiotherapy (CCRT) have yet to be developed. This study aims to develop a least absolute shrinkage and selection operator (LASSO)-based multivariate NTCP model to predict severe RIL in patients with pancreatic cancer during CCRT and to validate the model internally. MATERIALS/METHODS We retrospectively reviewed patients with localized pancreatic cancer who underwent CCRT using three-dimensional conformal radiation therapy from 2013 to 2021. The exclusion criteria were patients with distant metastasis; patients who did not complete RT due to tumor progression; patients who did not have absolute lymphocyte count (ALC) data available before or during RT. An ALC of < 0.5 K/μL during CCRT was defined as severe RIL. A NTCP model of severe RIL was developed by LASSO-based multivariate analysis. We used age, sex, Karnofsky performance status, maximum tumor size, carbohydrate antigen 19-9 level before RT, ALC before RT, volume of planning target volume (PTV), and dosimetric parameters for surrounding organs (including spleen, vertebrae, liver, bilateral kidneys, gastrointestinal tracts) as variables for LASSO. In addition, internal validation was performed by the bootstrap method. The predictive performance of the model was evaluated by the area under the curve (AUC) of the receiver operating characteristic curve and scaled Brier score. RESULTS Of the 131 patients included in the study, the median age was 68 years (range, 42-84), and 55% were male. The median ALC before RT was 1.37 K/µL (0.52-3.50). The median PTV volume was 315.4 ml (86.3-1079.3). The median dose of radiotherapy was 50.4 Gy (16.2-50.4), with 1.8 Gy per fraction. Combination chemotherapy was S-1 in 99 cases (75.6%) and gemcitabine in 32 cases (24.4%). Induction chemotherapy before CCRT was performed in 39 patients (29.8%). Severe RIL was observed in 84 (63.6%) patients. The LASSO showed that low baseline ALC (p = 0.0002), large PTV volume (p < 0.0001), and a large kidney V5 defined as the percentage of bilateral kidneys receiving 5 Gy or more (p = 0.0338) were selected as parameters of the prediction model for severe RIL (AUC = 0.917) and scaled Brier score was 0.511. As a result of internal validation by the bootstrap method, the average AUC was 0.918 (95% confidence interval, 0.849-0.954). CONCLUSION Severe RIL occurred frequently during CCRT for pancreatic cancer, and a NTCP model for severe RIL developed and validated internally in this study showed good predictive performance. External validation is needed before this NTCP model can be used as a benchmark for treatment planning to reduce the risk of severe RIL and for considering future treatment approaches.
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Affiliation(s)
- F Koizumi
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - N Katoh
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Kanehira
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - Y Kawamoto
- Division of Cancer Center, Hokkaido University Hospital, Sapporo, Japan
| | - T Nakamura
- Department of Gastroenterological Surgery Ⅱ, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - T Kakisaka
- Department of Gastroenterological Surgery Ⅰ, Hokkaido University Hospital, Sapporo, Japan
| | - Y Uchinami
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Taguchi
- Department of Radiation Oncology, Hokkaido University Hospital, Sapporo, Japan
| | - Y Fujita
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - S Takahashi
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Higaki
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - K Nishioka
- Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - K Yasuda
- Department of Radiation Oncology, Hokkaido University Hospital, Sapporo, Japan
| | - R Kinoshita
- Department of Radiation Oncology, Hokkaido University Hospital, Sapporo, Japan
| | - R Suzuki
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - N Miyamoto
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - I Yokota
- Department of Biostatistics, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - K Kobashi
- Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - H Aoyama
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
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Hatakeyama M, Yamamoto T, Yasuda K, Matsumura S, Yasunaga K, Sato K. In-situ Observation of Damage Structure in Cu-Cr-Zr and Cu-Cr Alloy During 1.25 MeV Electron Irradiation. Nuclear Materials and Energy 2022. [DOI: 10.1016/j.nme.2022.101144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Fujita Y, Katoh N, Uchinami Y, Taguchi H, Nishioka K, Mori T, Yasuda K, Minatogawa H, Koizumi F, Otsuka M, Takao S, Tamura M, Tanaka S, Sutherland K, Tha K, Ito Y, Shimizu S, Aoyama H. Pre-Treatment Apparent Diffusion Coefficient Histogram Metrics as a Predictor of Local Tumor Control After Proton Beam Therapy in Patients With Hepatocellular Carcinomas. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.360] [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: 10/20/2022]
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Otsuka M, Yasuda K, Minatogawa H, Fujita Y, Uchinami Y, Koizumi F, Suzuki R, Miyamoto N, Suzuki T, Tsushima N, Kano S, Taguchi J, Shimizu Y, Homma A, Shimizu S, Aoyama H. A Dosimetric Analysis of Locoregional Failure Using Deformable Image Registration in Hypopharyngeal Cancer After Sequential-Boost Intensity-Modulated Radiotherapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mandai K, Uno K, Yasuda K. Gastrointestinal: Plastic stent-induced polyp-like lesion in the bile duct. J Gastroenterol Hepatol 2020; 35:2031. [PMID: 32498133 DOI: 10.1111/jgh.15092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 05/07/2020] [Indexed: 12/09/2022]
Affiliation(s)
- K Mandai
- Department of Gastroenterology, Kyoto Second Red Cross Hospital
| | - K Uno
- Department of Gastroenterology, Kyoto Second Red Cross Hospital
| | - K Yasuda
- Department of Gastroenterology, Kyoto Second Red Cross Hospital
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Takahara K, Oguri M, Yasuda K, Sumi T, Izumi K, Takikawa T, Takahashi H, Ishii H, Murohara T. Efficacy of rapid decongestion strategy in patients hospitalized for acute heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1193] [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: 11/13/2022] Open
Abstract
Abstract
Background
Clinical congestion is the most dominant feature in patients with acute decompensated heart failure (HF). However, uncertainty exists due to the permutations and combinations of congestion status and decongestion strategies. We aimed to investigate the impact of congestion status and its improvement on 1-year mortality.
Methods
We prospectively included 453 consecutive patients hospitalized for acute decompensated HF between July 2015 and March 2017. Congestion was evaluated using the congestion score which consists of signs and symptoms including dyspnea, fatigue, orthopnea, jugular vein distension, rales, and edema. This score ranges from 0 to 3 for each value, and calculated by summing each score. We assessed this score at admission, day 3, and discharge.
Results
The median age was 81 (interquartile range 75–87) years, and 54.1% of the subjects were male. The 1-year mortality rate was 22.7%. The congestion scores at admission, day 3, and discharge were 10.7±3.9, 3.4±3.5, and 0.3±0.8, respectively. The rate of improvement during the first 3 days was 78% and 46.6% had residual congestion, defined as scores at day 3 ≥3. The score at day 3 and improvement rate during the first 3 days were related to 1-year all-cause mortality (P<0.001). We examined combined predictive values by calculating multivariable-adjusted hazard ratios for associations of residual congestion and improvement rate during the first 3 days (cut-off value 64%); and prognostic variables identified by univariate Cox regression model (age, body mass index, systolic blood pressure, potassium level, albumin level, the prevalence of anemia and hypertension, left ventricular ejection fraction, ischemic etiology, previous HF hospitalization). Residual congestion and lesser improvement (% improvement <64%) were associated with higher relative risk of 1-year all-cause mortality than residual congestion and higher improvement (% improvement ≥64%) [adjusted hazard ratio (aHR) 2.33, 95% CI 1.11–4.91, P=0.025], or resolved congestion (aHR 2.17, 95% CI 1.30–3.63, P=0.003). Similar analysis revealed significant relationship of the score at day 3 and the rate of improvement from admission to day 3 to cardiovascular mortality. Combined predictive values of residual congestion and lesser improvement with adjustment for prognostic variables identified by univariate Cox regression model (age, body mass index, systolic blood pressure, potassium level, albumin level, the prevalence of anemia, reduced eGFR, and hypertension, left ventricular ejection fraction, ischemic etiology, previous HF hospitalization) were higher than those with residual congestion and higher improvement (aHR 3.04, 95% CI 1.15–8.03, P=0.025), or resolved congestion (aHR 3.17, 95% CI 1.65–6.11, P<0.001).
Conclusions
This study suggested that rapid decongestion therapy after hospital admission could be prerequisite to improve 1-year mortality in acute decompensated HF.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Takahara
- Kasugai Municipal Hospital, Department of Cardiology, Kasugai, Japan
| | - M Oguri
- Kasugai Municipal Hospital, Department of Cardiology, Kasugai, Japan
| | - K Yasuda
- Kasugai Municipal Hospital, Department of Cardiology, Kasugai, Japan
| | - T Sumi
- Ichinomiya municipal hospital, Department of Cardiology, Ichinomiya, Japan
| | - K Izumi
- Kasugai Municipal Hospital, Department of Cardiology, Kasugai, Japan
| | - T Takikawa
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - H Takahashi
- Fujita Health University, Division of Medical Statistics, Toyoake, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
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Fukuyama Y, Otake H, Seike F, Kawamori H, Toba T, Nagasawa A, Nakano S, Tanimura K, Takahashi Y, Sasabe K, Shite J, Iwasaki M, Takaya T, Yasuda K, Hirata K. Potential relationship between high wall shear stress and plaque rupture that cause acute coronary syndrome: insights from optical coherence tomography based computational fluid dynamic simulation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0321] [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: 11/13/2022] Open
Abstract
Abstract
Background
The direct relationship between plaque rupture (PR) that cause acute coronary syndrome (ACS) and wall shear stress (WSS) remains uncertain.
Methods
From the Kobe University ACS-OCT registry, one hundred ACS patients whose culprit lesions had PR documented by optical coherence tomography (OCT) were enrolled. Lesion-specific 3D coronary artery models were created using OCT data. Specifically, at the ruptured portion, the tracing of the luminal edge of the residual fibrous cap was smoothly extrapolated to reconstruct the luminal contour before PR. Then, WSS was computed from computational fluid dynamics (CFD) analysis by a single core laboratory. Relationships between WSS and the location of PR were assessed with 1) longitudinal 3-mm segmental analysis and 2) circumferential analysis. In the longitudinal segmental analysis, each culprit lesion was subdivided into five 3-mm segments with respect to the minimum lumen area (MLA) location at the centered segment (Figure. 1). In the circumferential analysis, we measured WSS values at five points from PR site and non-PR site on the cross-sections with PR. Also, each ruptured plaque was categorized into the lateral type PR (L-PR), central type PR (C-PR), and others according to the relation between the site of tearing and the cavity (Figure. 2).
Results
In the longitudinal 3-mm segmental analysis, the incidences of PR at upstream (UP1 and 2), MLA, and downstream (DN1 and 2) were 45%, 40%, and 15%, respectively. The highest average WSS was located in UP1 in the upstream PR (UP1: 15.5 (10.4–26.3) vs. others: 6.8 (3.3–14.7) Pa, p<0.001) and MLA segment in the MLA PR (MLA: 18.8 (6.0–34.3) vs. others: 6.5 (3.1–11.8) Pa, p<0.001), and the second highest WSS was located at DN1 in the downstream PR (DN1: 5.8 (3.7–11.5) vs. others: 5.5 (3.7–16.5) Pa, p=0.035). In the circumferential analysis, the average WSS at PR site was significantly higher than that of non-PR site (18.7 (7.2–35.1) vs. 13.9 (5.2–30.3) Pa, p<0.001). The incidence of L-PR, C-PR, and others were 51%, 42%, and 7%, respectively. In the L-PR, the peak WSS was most frequently observed in the lateral site (66.7%), whereas that in the C-PR was most frequently observed in the center site (70%) (Figure. 3). In the L-PR, the peak WSS value was significantly lower (44.6 (19.6–65.2) vs. 84.7 (36.6–177.5) Pa, p<0.001), and the thickness of broken fibrous cap was significantly thinner (40 (30–50) vs. 80 (67.5–100) μm, p<0.001), and the lumen area at peak WSS site was significantly larger than those of C-PR (1.5 (1.3–2.0) vs. 1.4 (1.1–1.6) mm2, p=0.008). Multivariate analysis demonstrated that the presence of peak WSS at lateral site, thinner broken fibrous cap thickness, and larger lumen area at peak WSS site were independently associated with the development of the L-PR.
Conclusions
A combined approach with CFD simulation and morphological plaque evaluation by using OCT might be helpful to predict future ACS events induced by PR.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Fukuyama
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - H Otake
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - F Seike
- Ehime University Graduate School of Medicine, Department of Cardiology, Pulmonology, Hypertension & Nephrology, Matsuyama, Japan
| | - H Kawamori
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - T Toba
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - A Nagasawa
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - S Nakano
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - K Tanimura
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - Y Takahashi
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - K Sasabe
- Ehime University Graduate School of Science and Engineering, Department of Mechanical Engineering, Matsuyama, Japan
| | - J Shite
- Osaka Saiseikai Nakatsu Hospital, Division of Cardiovascular Medicine, Osaka, Japan
| | - M Iwasaki
- Hyogo Prefectural Awaji Hospital, Division of Cardiovascular Medicine, Sumoto, Japan
| | - T Takaya
- Hyogo Brain and Heart Center, Division of Cardiovascular Medicine, Himeji, Japan
| | - K Yasuda
- Ehime University Graduate School of Science and Engineering, Department of Mechanical Engineering, Matsuyama, Japan
| | - K Hirata
- Kobe University Graduate School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
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Imai Y, Nagai N, Yasuda K, Kusakabe M, Inoue Y, Natsuaki M, Yamanishi K. 316 Dupilumab effects on the circulating ILC2 population and ILC2/3 repertoire in patients with atopic dermatitis. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.323] [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: 11/24/2022]
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Yasuda K, Kotaka M, Toyohara T, Sueta SI, Katakai Y, Ageyama N, Uemoto S, Osafune K. A nonhuman primate model of liver fibrosis towards cell therapy for liver cirrhosis. Biochem Biophys Res Commun 2020; 526:661-669. [PMID: 32248968 DOI: 10.1016/j.bbrc.2020.03.148] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 03/25/2020] [Indexed: 01/14/2023]
Abstract
Orthotopic liver transplantation (OLT) is the only curative treatment for refractory chronic liver failure in liver cirrhosis. However, the supply of donated livers does not meet the demand for OLT due to donor organ shortage. Cell therapy using hepatocyte-like cells derived from human induced pluripotent stem cells (hiPSC-HLCs) is expected to mitigate the severity of liver failure, postpone OLT and ameliorate the insufficient liver supply. For the successful clinical translation of hiPSC-based cell therapy against liver cirrhosis, realistic animal models are required. In this study, we created a nonhuman primate (NHP) liver fibrosis model by repeated administrations of thioacetamide (TAA) and evaluated the short-term engraftment of hiPSC-HLCs in the fibrotic liver. The NHP liver fibrosis model reproduced well the pathophysiology of human liver cirrhosis including portal hypertension. Under immunosuppressive treatment, we transplanted ALBUMIN-GFP reporter hiPSC-HLC aggregates into the fibrotic livers of the NHP model via the portal vein. Fourteen days after the transplantation, GFP-expressing hiPSC-HLC clusters were detected in the portal areas of the fibrotic livers. These results will facilitate preclinical studies using the NHP liver fibrosis model and help establish iPSC-based cell therapies against liver cirrhosis.
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Affiliation(s)
- Katsutaro Yasuda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Hepatobiliary Pancreatic Surgery and Transplantation, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Maki Kotaka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Takafumi Toyohara
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Shin-Ichi Sueta
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yuko Katakai
- The Corporation for Production and Research of Laboratory Primates, Sakura 1-16-2, Tsukuba, Ibaraki, 305-0003, Japan
| | - Naohide Ageyama
- Tsukuba Primate Research Center, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Hachimandai 1-1, Tsukuba, Ibaraki, 305-0843, Japan
| | - Shinji Uemoto
- Department of Hepatobiliary Pancreatic Surgery and Transplantation, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
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Sakai S, Matsuda R, Adachi R, Akiyama H, Maitani T, Ohno Y, Oka M, Abe A, Seiki K, Oda H, Shiomi K, Urisu A, Arakawa F, Futo S, Haraguchi H, Hirose Y, Hirota M, Iidzuka T, Kan K, Kanayama S, Koike T, Kojima K, Minegishi Y, Mori Y, Nishihara R, Sato H, Yamaguchi A, Yamakawa H, Yasuda K. Interlaboratory Evaluation of Two Enzyme-Linked Immunosorbent Assay Kits for the Determination of Crustacean Protein in Processed Foods. J AOAC Int 2019. [DOI: 10.1093/jaoac/91.1.123] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
The labeling of foods containing material derived from crustaceans such as shrimp and crab is to become mandatory in Japan because of increases in the number of allergy patients. To ensure proper labeling, 2 novel sandwich enzyme-linked immunosorbent assay (ELISA) kits for the determination of crustacean protein in processed foods, the N kit (Nissui Pharmaceutical Co., Ltd, Ibaraki, Japan) and the M kit (Maruha Nichiro Holdings, Inc., Ibaraki, Japan), have been developed. Five types of model processed foods containing 10 and/or 11.9 g/g crustacean soluble protein were prepared for interlaboratory evaluation of the performance of these kits. The N kit displayed a relatively high level of reproducibility relative standard deviation (interlaboratory precision; 4.08.4 RSDR) and sufficient recovery (6586) for all the model processed foods. The M kit displayed sufficient reproducibility (17.620.5 RSDR) and a reasonably high level of recovery (82103). The repeatability relative standard deviation (RSDr) values regarding the detection of crustacean proteins in the 5 model foods were mostly <5.1 RSDr for the N kit and 9.9 RSDr for the M kit. In conclusion, the results of this interlaboratory evaluation suggest that both these ELISA kits would be very useful for detecting crustacean protein in processed foods.
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Affiliation(s)
- Shinobu Sakai
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Rieko Matsuda
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Adachi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hiroshi Akiyama
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Tamio Maitani
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Yasuo Ohno
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Michihiro Oka
- Nissui Pharmaceutical Co, Ltd, 1075-2, Hokunanmoro, Yuki, Ibaraki 307-0036, Japan
| | - Akihisa Abe
- Nippon Suisan Kaisha, Ltd, 559-6, Kitano-machi, Hachioji, Tokyo 192-0906, Japan
| | - Kohsuke Seiki
- Maruha Nichiro Holdings, Inc., 16-2, Wadai, Tsukuba, Ibaraki 300-4295, Japan
| | - Hiroshi Oda
- Maruha Nichiro Holdings, Inc., 16-2, Wadai, Tsukuba, Ibaraki 300-4295, Japan
| | - Kazuo Shiomi
- Tokyo University of Marine Science and Technology, 4-5-7, Konan, Minato-ku, Tokyo 108-8477, Japan
| | - Atsuo Urisu
- Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
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12
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Sakai S, Adachi R, Akiyama H, Teshima R, Doi H, Shibata H, Urisu A, Arakawa F, Haraguchi H, Hirose Y, Hirota M, Iidzuka T, Ikeno K, Kojima K, Maeda S, Minegishi Y, Mishima T, Oguchi K, Seki T, Yamakawa H, Yano T, Yasuda K. Determination of Walnut Protein in Processed Foods by Enzyme-Linked Immunosorbent Assay: Interlaboratory Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.4.1255] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Because food allergens from tree nuts, including walnuts, are a frequent cause of adverse food reactions for allergic patients, the labeling of foods containing ingredients derived from tree nuts is required in numerous countries. According to Japanese regulations, the labeling of food products containing walnuts is recommended. To ensure proper labeling, a novel sandwich ELISA kit for the determination of walnut protein in processed foods (Walnut Protein [2S-Albumin] Kit; Morinaga Institute of Biological Science, Inc.; walnut kit) has been developed. We prepared seven types of incurred samples (model processed foods: biscuits, bread, sponge cake, orange juice, jelly, chicken meatballs, and rice gruel) containing 10 g walnut soluble protein/g of food for use in interlaboratory evaluations of the walnut kit. The walnut kit displayed sufficient reproducibility relative standard deviations (interlaboratory precision: 5.89.9 RSDR) and a high level of recovery (81119) for all the incurred samples. All the repeatability relative standard deviation (RSDr) values for the incurred samples that were examined were less than 6.0. The results of this interlaboratory evaluation suggested that the walnut kit could be used as a precise and reliable tool for determination of walnut protein in processed foods.
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Affiliation(s)
- Shinobu Sakai
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Adachi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hiroshi Akiyama
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Teshima
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hirotoshi Doi
- Morinaga Institute of Biological Science, Inc., 2-1-16, Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
| | - Haruki Shibata
- Morinaga Institute of Biological Science, Inc., 2-1-16, Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
| | - Atsuo Urisu
- Fujita Health University, The Second Teaching Hospital, 3-6-10, Otobashi, Nakagawa-ku, Nagoya 454-8509, Japan
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13
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Sakai S, Adachi R, Akiyama H, Teshima R, Morishita N, Matsumoto T, Urisu A, Arakawa F, Endo Y, Haraguchi H, Hirose Y, Hirota M, Iidzuka T, Kojima K, Minegishi Y, Mishima T, Nishihara R, Seki T, Yamakawa H, Yano T, Yasuda K. Enzyme-Linked Immunosorbent Assay Kit for the Determination of Soybean Protein in Processed Foods: Interlaboratory Evaluation. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.1.243] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
The labeling of foods containing ingredients derived from soybean is recommended in Japan because of an increasing number of patients who are allergic to soybeans. To ensure proper labeling, a novel sandwich ELISA kit for the determination of soybean protein in processed foods (FASTKIT Ver. II, Soybean, Nippon Meat Packers, Inc.; soy kit) has been developed. Five types of incurred samples (model processed foods: rice gruel, sausage, sweet adzuki bean soup, sweet potato cake, and tomato sauce) containing 10 g soybean soluble protein/g food were prepared for use in interlaboratory evaluations of the soy kit. The soy kit displayed a sufficient RSDR value (interlaboratory precision: 9.313.4 RSDR) and a high level of recovery (97114) for all the incurred samples. The RSDr value for the incurred samples was mostly <4.8. The results of this interlaboratory evaluation suggest that the soy kit can be used as a precise and reliable tool for the determination of soybean proteins in processed foods.
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Affiliation(s)
- Shinobu Sakai
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Adachi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hiroshi Akiyama
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Teshima
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Naoki Morishita
- R&D Center Nippon Meat Packers, Inc., 3-3, Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Takashi Matsumoto
- R&D Center Nippon Meat Packers, Inc., 3-3, Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Atsuo Urisu
- Fujita Health University, The Second Teaching Hospital, 3-6-10, Otobashi, Nakagawa-ku, Nagoya 454-8509, Japan
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14
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Takahara K, Yasuda K, Oguri M, Ishii H, Murohara T. P790Verification of selective arterial blood sampling for the assessment of in-hospital mortality in acute decompensated heart failure. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0389] [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: 11/13/2022] Open
Abstract
Abstract
Background
Acidosis or lactate accumulation is frequently observed in patients with acute decompensated heart failure (ADHF). Although each value can be easily obtained and evaluated by arterial blood sampling, sampling to all patients is difficult in daily clinical practice. Therefore, the prognostic impact of acidosis or lactate accumulation on this condition remains to be identified definitively.
Purpose
The purpose of the study was to verify the effectiveness of selective arterial blood sampling at emergency department in patients with ADHF by evaluating an association with in-hospital mortality.
Methods
A total of 917 consecutive patients with ADHF from April 2012 to March 2017 were enrolled. We compared baseline characteristics and in-hospital mortality between patients with or without arterial blood sampling. Patients performed blood sampling were assigned to four groups according to the presence or absence of acidosis (PH <7.35) and lactate accumulation (>2.0 mmol/L), and predictive value of acidosis and/or lactate accumulation for in-hospital mortality was calculated by multivariable logistic regression analysis.
Results
Of all patients, 689 patients (75.1%) underwent blood sampling. Systolic blood pressure and heart rate at hospital arrival, use of emergency medical service, previous heart failure hospitalization, New York Heart Association classification grade IV, presence of jugular vein distention, and the prevalence of hypertension and dementia, were significantly different between the two groups (P<0.05). There was no difference in the occurrence of in-hospital mortality between patients with or without blood sampling (9.3% in patients with blood sampling versus 9.2% in those without blood sampling, respectively; P=0.972). In 689 patients who underwent blood sampling, we examined combined predictive value of acidosis and/or lactate accumulation for in-hospital mortality by multivariable logistic regression analysis with adjustments for covariates with P<0.05 (age, systolic blood pressure at hospital arrival, left ventricular ejection fraction, and cold profile), and showed that acidosis with lactate accumulation [adjusted odds ratio (OR) 3.30, 95% confidence interval (CI) 1.22–8.93, P=0.019], acidosis without lactate accumulation (adjusted OR 4.06, 95% CI 1.12–14.7, P=0.033), lactate accumulation without acidosis (adjusted OR 2.69, 95% CI 1.14–6.33, P=0.024) were significantly (P<0.05) associated with in-hospital mortality. Our results indicated that patients presenting acidosis without lactate accumulation revealed the highest in-hospital mortality among the four groups.
Conclusion
Arterial blood sampling at emergency department could be beneficial for stratifying high risk patients with ADHF. Furthermore, routine blood sampling could be allowed in patients with ADHF if we can secure safety.
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Affiliation(s)
- K Takahara
- Kasugai Municipal Hospital, Department of Cardiology, Kasugai, Japan
| | - K Yasuda
- Kasugai Municipal Hospital, Department of Cardiology, Kasugai, Japan
| | - M Oguri
- Kasugai Municipal Hospital, Department of Cardiology, Kasugai, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
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15
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Ohno S, Yoshinaga M, Ozawa J, Fukuyama M, Seiichi S, Kashiwa A, Yasuda K, Kaneko S, Nakau K, Inukai S, Sakazaki H, Makiyama T, Aiba T, Suzuki H, Horie M. P2865Mutation specific clinical characteristics in long QT syndrome type 8; severe phenotype in Timothy syndrome patients. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1174] [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
Background
Long QT syndrome type 8 (LQT8) caused by mutations in CACNA1C has been classified as a very rare and severe type of long QT syndrome accompanied with Timothy syndrome (TS) with extra-cardiac phenotype. Recently, various mutations in CACNA1C have been identified in non-TS patients. However, mutation specific severity in LQT8 has not been elucidated yet, especially for non-TS patients.
Purpose
We aimed to clarify the clinical characteristics of LQT8 patients.
Methods
The study consists of 26 LQT8 patients (21 probands and 5 family members). We evaluated their phenotype.
Results
Table summarizes the clinical characteristics of LQT8 patients. TS patients diagnosed in younger age than those of non-TS. Four TS and one non-TS patients were diagnosed at the age of 0, though the non-TS patient was a son of a patient and asymptomatic. Nine patients suffered symptoms including 7 with cardiac arrest. We identified three TS mutations; classical p.G406R in two and p.G402S in two, and a new TS mutation, p.412M in one. Four of TS patients were symptomatic and two died suddenly at the age of 4 and 5. In contrast, no one died in non-TS patients. Five non-TS patients suffered symptoms in the age of 4,9,15,54 and 64, and the mutations were p.S643F, p.R858H (2 patients), p.K1518E and p.K1591T.
Characteristics of TS and non-TS patient TS Non-TS P N (male) 5 (2) 21 (9) Age (range) 0 (0–7) 12 (0–64) 0.004 Symptom Syncope 4 5 0.034 CPA 3 4 0.101 ECG characteristics QT interval 603±40 507±14 0.011 T wave alternans 5 2 <0.001 AV Block 4 1 0.002 Therapy (4 unknown) Beta-blocker 4 7 0.311 Mexiletine 3 1 0.024 ICD implantation 2 2 0.21
Conclusions
Although TS patients showed severe phenotype, most of the non-TS patients were asymptomatic. The phenotype in LQT8 are diversely different depend on the mutations, especially between patients with TS and non-TS.
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Affiliation(s)
- S Ohno
- National Cerebral and Cardiovascular Center, Osaka, Japan
| | - M Yoshinaga
- National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - J Ozawa
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - M Fukuyama
- Shiga University of Medical Science, Otsu, Japan
| | - S Seiichi
- Okinawa Children's Medical Center, Haibaru, Japan
| | - A Kashiwa
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - K Yasuda
- Aichi Children's Health and Medical Center, Daifu, Japan
| | - S Kaneko
- Seirei Hamamatsu General Hospital, Hamamatsu, Japan
| | - K Nakau
- Asahikawa Medical University, Asahikawa, Japan
| | - S Inukai
- Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - H Sakazaki
- Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - T Makiyama
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - T Aiba
- National Cerebral and Cardiovascular Center, Osaka, Japan
| | - H Suzuki
- Uonuma Kikan Hospital, Minamiuonuma, Japan
| | - M Horie
- Shiga University of Medical Science, Otsu, Japan
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16
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Takahashi N, Ogita M, Tsuboi S, Nishio R, Yasuda K, Takeuchi M, Iso T, Sonoda T, Yatsu S, Wada H, Shiozawa T, Dohi T, Yanagawa Y, Suwa S, Daida H. P1745Clinical characteristics and long-term outcome in patients with helicopter-transported acute coronary syndrome after primary percutaneous coronary intervention. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0499] [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
Background
Reducing delay to percutaneous coronary intervention improves functional outcome and reduces long-term mortality. Transportation by helicopter is often quicker than ground transport and thus may improve overall prognosis through reduced ischemic injury and infarction size. Our hospital is located on the medically-depopulated peninsula surrounded by mountain. The journey from the southern tip of the peninsula to the critical care medical center of our hospital take 1.5 hour by a ground ambulance but only 15 minutes by helicopter.
We compared the clinical characteristics and long-term mortality between air and ground transport of ACS patients for primary PCI.
Methods
We conducted an observational cohort study evaluating 2324 patients (mean age 68.5±12.0, male 75.2%) with ACS underwent primary PCI between April 2004 and December 2017 at our hospital.
We divided into three groups according to transportation system type (air, ground, walk-in).
The primary outcome was defined as all-cause death during the long-term follow-up.
Results
Among the entire cohort, 577 patients (24.8%) were transported by air. 1326 (57.1%) patients by ambulance, 421 (18.1%) patients by walk. Baseline characteristics were comparable, but patients by air had a higher prevalence of ST-elevation myocardial infarction.
The rate of long-term mortality was comparable during the median follow up of 6 years (air, 21.1% vs. ground, 21.4% vs. walk-in, 21.1%, respectively, log-rank p=0.72). Multivariate Cox regression analysis showed no significant association between air transportation and long-term mortality (Adjusted HR [vs ground] 1.05, 95% CI 0.60–1.78, p=0.85 and [vs walk-in] 0.94, 95% CI 0.62–1.43, respectively, p=0.77).
Kaplan-Meier curve
Conclusions
The rate of long-term mortality in patients with ACS transported by air was comparable with those transported by ground.
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Affiliation(s)
- N Takahashi
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - M Ogita
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - S Tsuboi
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - R Nishio
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - K Yasuda
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - M Takeuchi
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - T Iso
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - T Sonoda
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - S Yatsu
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - H Wada
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - T Shiozawa
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - T Dohi
- Juntendo University Graduate School of Medicine, Cardiovascular Medicine, Tokyo, Japan
| | - Y Yanagawa
- Juntendo University Shizuoka Hospital, Acute critical care medicine, Izunokuni, Japan
| | - S Suwa
- Juntendo University Shizuoka Hospital, Cardiology, Izunokuni, Japan
| | - H Daida
- Juntendo University Graduate School of Medicine, Cardiovascular Medicine, Tokyo, Japan
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17
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Muraji S, Sumitomo N, Imamura T, Yasuda K, Nishihara E, Iwamoto M, Tateno S, Doi S, Hata T, Kogaki S, Horigome H, Ohno S, Ichida F, Nagashima M, Yoshinaga M. P4654Clinical and electrocardiographic features of restrictive cardiomyopathy in children. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.1036] [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: 11/13/2022] Open
Abstract
Abstract
Introduction
Restrictive cardiomyopathy (RCM) is a rare myocardial disease with an impaired diastolic function and poor prognosis. The mean survival duration after a diagnosis of RCM is reported to be around 2 years in children and most need heart transplantations.
Purpose
This study aimed to determine the 12-lead electrocardiogram (ECG) diagnostic criteria of RCM based on the initial diagnostic electrocardiogram.
Methods
ECGs in pediatric cardiomyopathy patients were collected from 15 institutes in Japan between 1979 and 2013. We compared the ECG findings, especially of the P wave, in RCM patients between the cardiomyopathy group and healthy children group separately for each gender and the age. The ECGs in the healthy group were obtained from school heart screening in Japan of first-graders, and seventh-graders. Statistical significance was determined as p<0.001.
Results
Among 376 registered cardiomyopathy patients, 63 had hypertrophic cardiomyopathy (HCM) (36%), 91 (24%) dilated cardiomyopathy (DCM), 106 (28%) a left ventricular myocardial noncompaction (LVNCs), 25 (7%) restrictive cardiomyopathy (RCM), 14 (4%) arrhythmogenic right ventricular cardiomyopathy (ARVC), and 5 (1%) other cardiomyopathies. Of the 25 RCM patients (9.9±3.4 years old, F:M=11:14), 36% were discovered during school heart screening. The first onset was an abnormal ECG in 9, symptoms of heart failure in 6, respiratory tract infections in 3, syncope in 1, and 6 with other. Of those patients, 2 (8%) had a family history of RCM, 24 (92%) no family history. A genetic diagnosis was performed in 5 of the 25 cases, and 3 had genetic abnormalities related to RCM. The mean follow-up period was 65±95 months (mean±standard deviation). During follow up, 19 patients (76%) survived, 6 (24%) died, 7 (28%) had heart transplantations, and 3 (12%) were waiting for heart transplantations with a left ventricular assist device.
The P wave was bimodal in lead I or biphasic in lead V1 in 15 patients (93%), and 13 (81%) patients had both variations. We evaluated the duration and amplitude of the first and second component of the P wave as P1 and P2. The number of control and RCM patients (control/RCM), duration of P1+P2, and sum total absolute value of the amplitude of P1+P2 in lead V1 were 8350/5, 90±9/116±10ms, and 72±28/528±278μV in first grade boys, 8423/3, 91±10/120±22ms, and 66±28/326±229μV in first grade girls, 8943/1, 97±1/100ms, and 71±31/328μV in seventh grade boys, and 9183/5, 98±11/112±10ms, and 55±27/315±56μV in seventh grade girls. Although the number of patients in the RCM group was small, sum total absolute value of the amplitude of P1+P2 in lead V1 showed a significant difference in any group.
Conclusion
The ECG in children with RCM exhibits P wave abnormalities in almost all patients. In particular, not the P wave interval but P wave shape in I and V1 and the sum total absolute value of the amplitude of P1+P2 in lead V1 were observed differences.
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Affiliation(s)
- S Muraji
- Saitama International Medical Center, Pediatric cardiology, Hidaka, Japan
| | - N Sumitomo
- Saitama International Medical Center, Pediatric cardiology, Hidaka, Japan
| | - T Imamura
- Saitama International Medical Center, Pediatric cardiology, Hidaka, Japan
| | - K Yasuda
- Aichi Children's Medical Center, Cardiology, Obu, Japan
| | - E Nishihara
- Ogaki Municipal Hospital, Pediatric Cardiology, Ogaki, Japan
| | - M Iwamoto
- Saiseikai Yokohama City Eastern Hospital, Pediatrics, Yokohama, Japan
| | - S Tateno
- Chiba Cerebral and Cardiovascular Center, Pediatrics, Chiba, Japan
| | - S Doi
- Tokyo Medical and Dental University, Pediatrics, Tokyo, Japan
| | - T Hata
- Fujita Health University, Toyoake, Japan
| | - S Kogaki
- Osaka General Medical Center, Pediatrics, Osaka, Japan
| | - H Horigome
- Ibaraki Children's Hospital, Pediatric Cardiology, Mito, Japan
| | - S Ohno
- National Cerebral and Cardiovascular Center, Bioscience and Genetics, Osaka, Japan
| | - F Ichida
- University of Toyama, Toyama, Japan
| | - M Nagashima
- Aichi Saiseikai Rehabilitation Hospital, Nagoya, Japan
| | - M Yoshinaga
- National Hospital Organization Kagoshima Medical Center, Pediatrics, Kagoshima, Japan
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18
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Yasuda K, Tsukazaki A, Yoshimi R, Takahashi KS, Kawasaki M, Tokura Y. Erratum: Large Unidirectional Magnetoresistance in a Magnetic Topological Insulator [Phys. Rev. Lett. 117, 127202 (2016)]. Phys Rev Lett 2019; 122:159903. [PMID: 31050523 DOI: 10.1103/physrevlett.122.159903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Indexed: 06/09/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.117.127202.
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19
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Minami T, Ishii T, Yasuchika K, Fukumitsu K, Ogiso S, Miyauchi Y, Kojima H, Kawai T, Yamaoka R, Oshima Y, Kawamoto H, Kotaka M, Yasuda K, Osafune K, Uemoto S. Novel hybrid three-dimensional artificial liver using human induced pluripotent stem cells and a rat decellularized liver scaffold. Regen Ther 2019; 10:127-133. [PMID: 31032388 PMCID: PMC6477477 DOI: 10.1016/j.reth.2019.03.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/07/2019] [Accepted: 03/14/2019] [Indexed: 12/14/2022] Open
Abstract
Introduction Liver transplantation is currently the only curative therapy for end-stage liver failure; however, establishment of alternative treatments is required owing to the serious donor organ shortage. Here, we propose a novel model of hybrid three-dimensional artificial livers using both human induced pluripotent stem cells (hiPSCs) and a rat decellularized liver serving as a scaffold. Methods Rat liver harvesting and decellularization were performed as reported in our previous studies. The decellularized liver scaffold was recellularized with hiPSC-derived hepatocyte-like cells (hiPSC-HLCs) through the biliary duct. The recellularized liver graft was continuously perfused with the culture medium using a pump at a flow rate of 0.5 mL/min in a standard CO2 (5%) cell incubator at 37 °C. Results After 48 h of continuous perfusion culture, the hiPSC-HLCs of the recellularized liver distributed into the parenchymal space. Furthermore, the recellularized liver expressed the albumin (ALB) and CYP3A4 genes, and secreted human ALB into the culture medium. Conclusion Novel hybrid artificial livers using hiPSCs and rat decellularized liver scaffolds were successfully generated, which possessed human hepatic functions. Human iPSC-derived hepatocytes were engrafted in a rat decellularized liver scaffold. The recellularized liver expressed human liver-related markers ALB and CYP3A4. The recellularized liver scaffold secreted human albumin. This novel model shows potential for artificial whole liver transplantation.
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Affiliation(s)
- Takahito Minami
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Takamichi Ishii
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Kentaro Yasuchika
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.,Japanese Red Cross Wakayama Medical Center, 4-20 Komatsubara-dori, Wakayama City 640-8558, Japan
| | - Ken Fukumitsu
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Satoshi Ogiso
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Yuya Miyauchi
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hidenobu Kojima
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Takayuki Kawai
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Ryoya Yamaoka
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Yu Oshima
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hiroshi Kawamoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Maki Kotaka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Katsutaro Yasuda
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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20
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Matsui S, Ochiai M, Yasuda K, Mae SI, Kotaka M, Toyoda T, Yamamoto T, Osafune K. Differentiation and isolation of iPSC-derived remodeling ductal plate-like cells by use of an AQP1-GFP reporter human iPSC line. Stem Cell Res 2019; 35:101400. [PMID: 30735882 DOI: 10.1016/j.scr.2019.101400] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 12/19/2018] [Accepted: 01/30/2019] [Indexed: 11/30/2022] Open
Abstract
Cholangiocytes are the epithelial cells that line bile ducts, and ductal plate malformation is a developmental anomaly of bile ducts that causes severe congenital biliary disorders. However, because of a lack of specific marker genes, methods for the stepwise differentiation and isolation of human induced pluripotent stem cell (hiPSC)-derived cholangiocyte progenitors at ductal plate stages have not been established. We herein generated an AQP1-GFP reporter hiPSC line and developed a combination treatment with transforming growth factor (TGF) β2 and epidermal growth factor (EGF) to induce hiPSC-derived hepatoblasts into AQP1+ cells in vitro. By confirming that the isolated AQP1+ cells showed similar gene expression patterns to cholangiocyte progenitors at the remodeling ductal plate stage around gestational week (GW) 20, we established a differentiation protocol from hiPSCs through SOX9+CK19+AQP1- ductal plate-like cells into SOX9+CK19+AQP1+ remodeling ductal plate-like cells. We further generated 3D bile duct-like structures from the induced ductal plate-like cells. These results suggest that AQP1 is a useful marker for the generation of remodeling ductal plate cells from hiPSCs. Our methods may contribute to elucidating the differentiation mechanisms of ductal plate cells and the pathogenesis of ductal plate malformation.
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Affiliation(s)
- Satoshi Matsui
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Miyuki Ochiai
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Katsutaro Yasuda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Shin-Ichi Mae
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Maki Kotaka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Taro Toyoda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Takuya Yamamoto
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
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21
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Yoshimi R, Yasuda K, Tsukazaki A, Takahashi KS, Kawasaki M, Tokura Y. Current-driven magnetization switching in ferromagnetic bulk Rashba semiconductor (Ge,Mn)Te. Sci Adv 2018; 4:eaat9989. [PMID: 30539144 PMCID: PMC6286171 DOI: 10.1126/sciadv.aat9989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 11/06/2018] [Indexed: 06/09/2023]
Abstract
Multiferroic materials with both ferroelectric and ferromagnetic orders provide a promising arena for the electrical manipulation of magnetization through the mutual correlation between those ferroic orders. Such a concept of multiferroics may expand to semiconductor with both broken symmetries of spatial inversion and time reversal, that is, polar ferromagnetic semiconductors. Here, we report the observation of current-driven magnetization switching in one such example, (Ge,Mn)Te thin films. The ferromagnetism caused by Mn doping opens an exchange gap in original massless Dirac band of the polar semiconductor GeTe with Rashba-type spin-split bands. The anomalous Hall conductivity is enhanced with increasing hole carrier density, indicating that the contribution of the Berry phase is maximized as the Fermi level approaches the exchange gap. By means of pulse-current injection, the electrical switching of the magnetization is observed in the (Ge,Mn)Te thin films as thick as 200 nm, pointing to the Rashba-Edelstein effect of bulk origin. The efficiency of this effect strongly depends on the Fermi-level position owing to the efficient spin accumulation at around the gap. The magnetic bulk Rashba system will be a promising platform for exploring the functional correlations among electric polarization, magnetization, and current.
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Affiliation(s)
- R. Yoshimi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - K. Yasuda
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - A. Tsukazaki
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - K. S. Takahashi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
- PRESTO, Japan Science and Technology Agency, Chiyoda-ku, Tokyo 102-0075, Japan
| | - M. Kawasaki
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - Y. Tokura
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
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22
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Kotani D, Kuboki Y, Yasuda K, Nakamura Y, Kawazoe A, Bando H, Taniguchi H, Shitara K, Yoshino T. Safety and efficacy of trifluridine/tipiracil (TAS-102) plus bevacizumab in clinical practice for patients with refractory metastatic colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy431.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Yasuda K, Takao S, Matsuo Y, Yoshimura T, Tamura M, Minatogawa H, Dekura Y, Matsuura T, Onimaru R, Shiga T, Shimizu S, Umegaki K, Shirato H. Intensity-Modulated Proton Therapy with Dose Painting based on Hypoxia Imaging for Nasopharyngeal Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1125] [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: 11/27/2022]
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24
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Onimaru R, Mori T, Yasuda K, Shirato H. Preliminary Study of Cell Survival Modelling Considering Stochastic Fluctuations in Cell Survival Rates During Radiation Therapy. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1035] [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: 10/28/2022]
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25
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Fujima N, Hirata K, Shiga T, Li R, Yasuda K, Onimaru R, Tsuchiya K, Kano S, Mizumachi T, Homma A, Kudo K, Shirato H. Integrating quantitative morphological and intratumoural textural characteristics in FDG-PET for the prediction of prognosis in pharynx squamous cell carcinoma patients. Clin Radiol 2018; 73:1059.e1-1059.e8. [PMID: 30245069 DOI: 10.1016/j.crad.2018.08.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 08/24/2018] [Indexed: 12/15/2022]
Abstract
AIM To assess potential prognostic factors in pharynx squamous cell carcinoma (SCC) patients by quantitative morphological and intratumoural characteristics obtained by 2-[18F]-fluoro-2-deoxy-d-glucose positron-emission tomography/computed tomography (FDG-PET/CT). MATERIALS AND METHODS The cases of 54 patients with pharynx SCC who underwent chemoradiation therapy were analysed retrospectively. Using their FDG-PET data, the quantitative morphological and intratumoural characteristics of 14 parameters were calculated. The progression-free survival (PFS) and overall survival (OS) information was obtained from patient medical records. Univariate and multivariate analyses were performed to assess the 14 quantitative parameters as well as the T-stage, N-stage, and tumour location data for their relation to PFS and OS. When an independent predictor was suggested in the multivariate analysis, the parameter was further assessed using the Kaplan-Meier method. RESULTS In the assessment of PFS, the univariate and multivariate analyses indicated the following as independent predictors: the texture parameter of homogeneity and the morphological parameter of sphericity. In the Kaplan-Meier analysis, the PFS rate was significantly improved in the patients who had both a higher value of homogeneity (p=0.01) and a higher value of sphericity (p=0.002). With the combined use of homogeneity and sphericity, the patients with different PFS rates could be divided more clearly. CONCLUSION The quantitative parameters of homogeneity and sphericity obtained by FDG-PET can be useful for the prediction of the PFS of pharynx SCC patients, especially when used in combination.
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Affiliation(s)
- N Fujima
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, N14 W5, Kita-Ku, Sapporo 0608638, Japan.
| | - K Hirata
- Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, N15 W7, Kita-Ku, Sapporo 0608638, Japan
| | - T Shiga
- Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, N15 W7, Kita-Ku, Sapporo 0608638, Japan
| | - R Li
- Department of Radiation Oncology, Stanford University, 875 Blake Wilbur Drive, Stanford, CA 94305-5847, USA; The Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, N15 W8, Kita-Ku, Sapporo 0608638, Japan
| | - K Yasuda
- The Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, N15 W8, Kita-Ku, Sapporo 0608638, Japan; Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, N15 W7, Kita-Ku, Sapporo 0608638, Japan
| | - R Onimaru
- Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, N15 W7, Kita-Ku, Sapporo 0608638, Japan
| | - K Tsuchiya
- Department of Radiation Oncology, Otaru General Hospital, Wakamatsu1-1-1, Otaru 0478550, Japan
| | - S Kano
- Department of Otolaryngology-Head and Neck Surgery, Hokkaido University Graduate School of Medicine, N15 W7, Kita-Ku, Sapporo 0608638, Japan
| | - T Mizumachi
- Department of Otolaryngology-Head and Neck Surgery, Hokkaido University Graduate School of Medicine, N15 W7, Kita-Ku, Sapporo 0608638, Japan
| | - A Homma
- Department of Otolaryngology-Head and Neck Surgery, Hokkaido University Graduate School of Medicine, N15 W7, Kita-Ku, Sapporo 0608638, Japan
| | - K Kudo
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, N14 W5, Kita-Ku, Sapporo 0608638, Japan
| | - H Shirato
- The Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, N15 W8, Kita-Ku, Sapporo 0608638, Japan; Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, N15 W7, Kita-Ku, Sapporo 0608638, Japan
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26
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Kojima H, Yasuchika K, Fukumitsu K, Ishii T, Ogiso S, Miyauchi Y, Yamaoka R, Kawai T, Katayama H, Yoshitoshi-Uebayashi EY, Kita S, Yasuda K, Sasaki N, Komori J, Uemoto S. Establishment of practical recellularized liver graft for blood perfusion using primary rat hepatocytes and liver sinusoidal endothelial cells. Am J Transplant 2018; 18:1351-1359. [PMID: 29338127 DOI: 10.1111/ajt.14666] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 12/29/2017] [Accepted: 01/03/2018] [Indexed: 01/25/2023]
Abstract
Tissue decellularization produces a three-dimensional scaffold that can be used to fabricate functional liver grafts following recellularization. Inappropriate cell distribution and clotting during blood perfusion hinder the practical use of recellularized livers. Here we aimed to establish a seeding method for the optimal distribution of parenchymal and endothelial cells, and to evaluate the effect of liver sinusoidal endothelial cells (LSECs) in the decellularized liver. Primary rat hepatocytes and LSECs were seeded into decellularized whole-liver scaffolds via the biliary duct and portal vein, respectively. Biliary duct seeding provided appropriate hepatocyte distribution into the parenchymal space, and portal vein-seeded LSECs simultaneously lined the portal lumen, thereby maintaining function and morphology. Hepatocytes co-seeded with LSECs retained their function compared with those seeded alone. Platelet deposition was significantly decreased and hepatocyte viability was maintained in the co-seeded group after extracorporeal blood perfusion. In conclusion, our seeding method provided optimal cell distribution into the parenchyma and vasculature according to the three-dimensional structure of the decellularized liver. LSECs maintained hepatic function, and supported hepatocyte viability under blood perfusion in the engineered liver graft owing to their antithrombogenicity. This recellularization procedure could help produce practical liver grafts with blood perfusion.
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Affiliation(s)
- Hidenobu Kojima
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kentaro Yasuchika
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - KenIshii Fukumitsu
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takamichi Ishii
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoshi Ogiso
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuya Miyauchi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryoya Yamaoka
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takayuki Kawai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hokahiro Katayama
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | | | - Sadahiko Kita
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Katsutaro Yasuda
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naoya Sasaki
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Junji Komori
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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27
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Imai Y, Nagai M, Kusakabe M, Yasuda K, Nakanishi K, Yoshimoto T, Yamanishi K. 902 Ablation of basophils reduces ILC2-dependent atopic dermatitis-like inflammation in mice overexpressing interleukin-33 in the skin. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.914] [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: 10/17/2022]
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28
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Goto A, Noda M, Goto M, Yasuda K, Mizoue T, Yamaji T, Sawada N, Iwasaki M, Inoue M, Tsugane S. Predictive performance of a genetic risk score using 11 susceptibility alleles for the incidence of Type 2 diabetes in a general Japanese population: a nested case-control study. Diabet Med 2018; 35:602-611. [PMID: 29444352 DOI: 10.1111/dme.13602] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/09/2018] [Indexed: 01/05/2023]
Abstract
AIMS To assess the predictive ability of a genetic risk score for the incidence of Type 2 diabetes in a general Japanese population. METHODS This prospective case-control study, nested within a Japan Public Health Centre-based prospective study, included 466 participants with incident Type 2 diabetes over a 5-year period (cases) and 1361 control participants, as well as 1463 participants with existing diabetes and 1463 control participants. Eleven susceptibility single nucleotide polymorphisms, identified through genome-wide association studies and replicated in Japanese populations, were analysed. RESULTS Most single nucleotide polymorphism loci showed directionally consistent associations with diabetes. From the combined samples, one single nucleotide polymorphism (rs2206734 at CDKAL1) reached a genome-wide significance level (odds ratio 1.28, 95% CI 1.18-1.40; P = 1.8 × 10-8 ). Three single nucleotide polymorphisms (rs2206734 in CDKAL1, rs2383208 in CDKN2A/B, and rs2237892 in KCNQ1) were nominally significantly associated with incident diabetes. Compared with the lowest quintile of the total number of risk alleles, the highest quintile had a higher odds of incident diabetes (odds ratio 2.34, 95% CI 1.59-3.46) after adjusting for conventional risk factors such as age, sex and BMI. The addition to the conventional risk factor-based model of a genetic risk score using the 11 single nucleotide polymorphisms significantly improved predictive performance; the c-statistic increased by 0.021, net reclassification improved by 6.2%, and integrated discrimination improved by 0.003. CONCLUSIONS Our prospective findings suggest that the addition of a genetic risk score may provide modest but significant incremental predictive performance beyond that of the conventional risk factor-based model without biochemical markers.
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Affiliation(s)
- A Goto
- Epidemiology and Prevention Group, Centre for Public Health Sciences, National Cancer Centre, Tokyo
| | - M Noda
- Department of Endocrinology and Diabetes, Saitama Medical University, Saitama
| | - M Goto
- Department of Diabetes and Endocrinology, JCHO Tokyo Yamate Medical Centre, Tokyo
| | - K Yasuda
- Department of Metabolic Disorder, Diabetes Research Centre, National Centre for Global Health and Medicine, Tokyo, Japan
| | - T Mizoue
- Department of Epidemiology and Prevention, National Centre for Global Health and Medicine, Tokyo, Japan
| | - T Yamaji
- Epidemiology and Prevention Group, Centre for Public Health Sciences, National Cancer Centre, Tokyo
| | - N Sawada
- Epidemiology and Prevention Group, Centre for Public Health Sciences, National Cancer Centre, Tokyo
| | - M Iwasaki
- Epidemiology and Prevention Group, Centre for Public Health Sciences, National Cancer Centre, Tokyo
| | - M Inoue
- Epidemiology and Prevention Group, Centre for Public Health Sciences, National Cancer Centre, Tokyo
| | - S Tsugane
- Epidemiology and Prevention Group, Centre for Public Health Sciences, National Cancer Centre, Tokyo
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29
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Yasuda K, Mogi M, Yoshimi R, Tsukazaki A, Takahashi KS, Kawasaki M, Kagawa F, Tokura Y. Quantized chiral edge conduction on domain walls of a magnetic topological insulator. Science 2018; 358:1311-1314. [PMID: 29217573 DOI: 10.1126/science.aan5991] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 10/24/2017] [Indexed: 11/02/2022]
Abstract
Electronic ordering in magnetic and dielectric materials forms domains with different signs of order parameters. The control of configuration and motion of the domain walls (DWs) enables nonvolatile responses against minute external fields. Here, we realize chiral edge states (CESs) on the magnetic DWs of a magnetic topological insulator. We design and fabricate the magnetic domains in the quantum anomalous Hall state with the tip of a magnetic force microscope and prove the existence of the chiral one-dimensional edge conduction along the prescribed DWs through transport measurements. The proof-of-concept devices based on reconfigurable CESs and Landauer-Büttiker formalism are realized for multiple-domain configurations with well-defined DW channels. Our results may lead to the realization of low-power-consumption spintronic devices.
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Affiliation(s)
- K Yasuda
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - M Mogi
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - R Yoshimi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - A Tsukazaki
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - K S Takahashi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Chiyoda-ku, Tokyo 102-0075, Japan
| | - M Kawasaki
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan.,RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - F Kagawa
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - Y Tokura
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan.,RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
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30
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Yoshioka S, Tsuruta K, Yamamoto T, Yasuda K, Matsumura S, Ishikawa N, Kobayashi E. X-ray absorption near edge structure and first-principles spectral investigations of cationic disorder in MgAl 2O 4 induced by swift heavy ions. Phys Chem Chem Phys 2018; 20:4962-4969. [PMID: 29387834 DOI: 10.1039/c7cp07591j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cationic disorder in the MgAl2O4 spinel induced by swift heavy ions was investigated using the X-ray absorption near edge structure. With changes in the irradiation fluences of 200 MeV Xe ions, the Mg K-edge and Al K-edge spectra were synchronously changed. The calculated spectra based on density function theory indicate that the change in the experimental spectra was due to cationic disorder between Mg in tetrahedral sites and Al in octahedral sites. These results suggest a high inversion degree to an extent that the completely random configuration is achieved in MgAl2O4 induced by the high density electronic excitation under swift heavy ion irradiation.
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Affiliation(s)
- S Yoshioka
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka, 819-0395, Japan.
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31
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Kotaka M, Toyoda T, Yasuda K, Kitano Y, Okada C, Ohta A, Watanabe A, Uesugi M, Osafune K. Adrenergic receptor agonists induce the differentiation of pluripotent stem cell-derived hepatoblasts into hepatocyte-like cells. Sci Rep 2017; 7:16734. [PMID: 29196668 PMCID: PMC5711806 DOI: 10.1038/s41598-017-16858-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 11/18/2017] [Indexed: 12/24/2022] Open
Abstract
Current induction methods of hepatocytes from human induced pluripotent stem cells (hiPSCs) are neither low cost nor stable. By screening a chemical library of 1,120 bioactive compounds and known drugs, we identified the α1-adrenergic receptor agonist methoxamine hydrochloride as a small molecule that promotes the differentiation of hiPSC-derived hepatoblasts into ALBUMIN+ hepatocyte-like cells. Other α1-adrenergic receptor agonists also induced the differentiation of hepatocyte-like cells, and an α1-receptor antagonist blocked the hepatic-inducing activity of methoxamine hydrochloride and that of the combination of hepatocyte growth factor (HGF) and Oncostatin M (OsM), two growth factors often used for the induction of hepatoblasts into hepatocyte-like cells. We also confirmed that treatment with methoxamine hydrochloride activates the signal transducer and activator of transcription 3 (STAT3) pathway downstream of IL-6 family cytokines including OsM. These findings allowed us to establish hepatic differentiation protocols for both mouse embryonic stem cells (mESCs) and hiPSCs using small molecules at the step from hepatoblasts into hepatocyte-like cells. The results of the present study suggest that α1-adrenergic agonists induce hepatocyte-like cells by working downstream of HGF and OsM to activate STAT3.
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Affiliation(s)
- Maki Kotaka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Taro Toyoda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Katsutaro Yasuda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yuko Kitano
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Chihiro Okada
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.,Mitsubishi Space Software Co., Ltd., 5-4-36 Tsukaguchi-honmachi, Amagasaki, Hyogo, 661-0001, Japan
| | - Akira Ohta
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Akira Watanabe
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.,Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Motonari Uesugi
- Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.,Institute for Chemical Research, Kyoto University, Gokasho Uji-city, Kyoto, 611-0011, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
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32
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Yasuda K, Fukuda S, Nakamura M, Takata M, Kuwata Y, Sainouchi M, Kawarazaki S, Murase N, Ohtani R, Aoki T, Yonemoto N, Akao M, Tsukahata T. Predictors for cardioembolic stroke in Japanese patients with atrial fibrillation: The Fushimi AF Registry. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Kawai T, Yasuchika K, Ishii T, Katayama H, Yoshitoshi EY, Ogiso S, Minami T, Miyauchi Y, Kojima H, Yamaoka R, Kita S, Yasuda K, Sasaki N, Fukumitsu K, Hatano E, Uemoto S. Identification of keratin 19-positive cancer stem cells associating human hepatocellular carcinoma using CYFRA 21-1. Cancer Med 2017; 6:2531-2540. [PMID: 28965351 PMCID: PMC5673926 DOI: 10.1002/cam4.1211] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 08/29/2017] [Accepted: 08/30/2017] [Indexed: 12/11/2022] Open
Abstract
The current lack of an easily measurable surrogate marker of cancer stem cells (CSCs) prevents the clinical application of CSCs for hepatocellular carcinoma (HCC). We previously reported that keratin 19 (K19) is a novel HCC‐CSC marker associated with transforming growth factor beta (TGFβ)/Smad signaling, and that K19+ HCC‐CSCs could be a new therapeutic target of TGFβ receptor 1 inhibitor LY2157299. In this study, we examined whether K19+ HCC‐CSCs can be tracked using cytokeratin 19 fragment CYFRA 21‐1. In 147 HCC patients who underwent curative resection and evaluated K19 expression by immunohistochemistry, preoperative serum CYFRA 21‐1 levels were significantly higher in K19+ patients than in K19− patients (P < 0.01). Receiver operating characteristic analyses revealed that serum CYFRA 21‐1 was the statistically significant and the most sensitive predictor of tumor K19 expression among preoperative laboratory test values (P < 0.001). In HCC cells encoding with a K19 promoter‐driven enhanced green fluorescent protein, fluorescence‐activated cell sorting (FACS)‐isolated K19+ cells displayed significantly higher levels of supernatant CYFRA 21‐1 than K19− cells (P < 0.01). Gain/loss of K19 function experiments confirmed that CYFRA 21‐1 levels were regulated by K19 function in HCC cells. Furthermore, CYFRA 21‐1 levels reflected the treatment efficacy of LY2157299 in K19+ cells. In conclusion, CYFRA 21‐1 can be used to predict K19 expression in HCC, and should thereby aid in the development of novel therapeutic strategies targeting K19+ HCC‐CSCs.
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Affiliation(s)
- Takayuki Kawai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Hepatobiliary Surgery and Liver Transplantation, Pitié-Salpétrière Hospital, University of Pierre and Marie Curie (UPMC), Paris, France
| | - Kentaro Yasuchika
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takamichi Ishii
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hokahiro Katayama
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Elena Yukie Yoshitoshi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Satoshi Ogiso
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takahito Minami
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuya Miyauchi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hidenobu Kojima
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryoya Yamaoka
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sadahiko Kita
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Katsutaro Yasuda
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Naoya Sasaki
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ken Fukumitsu
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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34
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Yasuda K, Tsukazaki A, Yoshimi R, Kondou K, Takahashi KS, Otani Y, Kawasaki M, Tokura Y. Current-Nonlinear Hall Effect and Spin-Orbit Torque Magnetization Switching in a Magnetic Topological Insulator. Phys Rev Lett 2017; 119:137204. [PMID: 29341677 DOI: 10.1103/physrevlett.119.137204] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Indexed: 06/07/2023]
Abstract
The current-nonlinear Hall effect or second harmonic Hall voltage is widely used as one of the methods for estimating charge-spin conversion efficiency, which is attributed to the magnetization oscillation by spin-orbit torque (SOT). Here, we argue the second harmonic Hall voltage under a large in-plane magnetic field with an in-plane magnetization configuration in magnetic-nonmagnetic topological insulator (TI) heterostructures, Cr_{x}(Bi_{1-y}Sb_{y})_{2-x}Te_{3}/(Bi_{1-y}Sb_{y})_{2}Te_{3}, where it is clearly shown that the large second harmonic voltage is governed not by SOT but mainly by asymmetric magnon scattering without macroscopic magnetization oscillation. Thus, this method does not allow an accurate estimation of charge-spin conversion efficiency in TI. Instead, the SOT contribution is exemplified by current pulse induced nonvolatile magnetization switching, which is realized with a current density of 2.5×10^{10} A m^{-2}, showing its potential as a spintronic material.
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Affiliation(s)
- K Yasuda
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - A Tsukazaki
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - R Yoshimi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - K Kondou
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - K S Takahashi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
- PRESTO, Japan Science and Technology Agency (JST), Chiyoda-ku, Tokyo, 102-0075, Japan
| | - Y Otani
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
- Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwa 277-8581, Japan
| | - M Kawasaki
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - Y Tokura
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
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35
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Yoshitoshi-Uebayashi EY, Toyoda T, Yasuda K, Kotaka M, Nomoto K, Okita K, Yasuchika K, Okamoto S, Takubo N, Nishikubo T, Soga T, Uemoto S, Osafune K. Corrigendum to "Modelling urea-cycle disorder citrullinemia type 1 with disease-specific iPSCs" [Biochem. Biophys. Res. Commun. 486(3) (2017) 613-619]. Biochem Biophys Res Commun 2017; 488:570-571. [PMID: 28528898 DOI: 10.1016/j.bbrc.2017.05.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Elena Yukie Yoshitoshi-Uebayashi
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan; Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Taro Toyoda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Katsutaro Yasuda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan; Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Maki Kotaka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Keiko Nomoto
- Department of Pediatrics, Kitasato University School of Medicine, Kanagawa, Japan
| | - Keisuke Okita
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Kentaro Yasuchika
- Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinya Okamoto
- Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Noriyuki Takubo
- Department of Pediatrics and Adolescent Medicine, Juntendo University, Tokyo, Japan
| | - Toshiya Nishikubo
- Department of Pediatrics, Center for Perinatal Medicine, Nara Medical University, Nara, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Shinji Uemoto
- Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
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36
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Ejima T, Kado M, Aoyama M, Yasuda K, Tamotsu S. Organelle Distribution in a Hydrated Bio-cell by Correlation between Soft X-ray and Fluorescence Images. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/849/1/012009] [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: 11/12/2022]
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37
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Katayama H, Yasuchika K, Miyauchi Y, Kojima H, Yamaoka R, Kawai T, Yukie Yoshitoshi E, Ogiso S, Kita S, Yasuda K, Sasaki N, Fukumitsu K, Komori J, Ishii T, Uemoto S. Generation of non-viral, transgene-free hepatocyte like cells with piggyBac transposon. Sci Rep 2017; 7:44498. [PMID: 28295042 PMCID: PMC5353749 DOI: 10.1038/srep44498] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 02/08/2017] [Indexed: 12/12/2022] Open
Abstract
Somatic cells can be reprogrammed to induced hepatocyte-like cells (iHeps) by overexpressing certain defined factors in direct reprogramming techniques. Of the various methods to deliver genes into cells, typically used genome-integrating viral vectors are associated with integration-related adverse events such as mutagenesis, whereas non-integrating viral vectors have low efficiency, making viral vectors unsuitable for clinical application. Therefore, we focused on developing a transposon system to establish a non-viral reprogramming method. Transposons are unique DNA elements that can be integrated into and removed from chromosomes. PiggyBac, a type of transposon, has high transduction efficiency and cargo capacity, and the integrated transgene can be precisely excised in the presence of transposase. This feature enables the piggyBac vector to achieve efficient transgene expression and a transgene-free state, thus making it a promising method for cell reprogramming. Here, we attempted to utilize the piggyBac transposon system to generate iHeps by integrating a transgene consisting of Hnf4a and Foxa3, and successfully obtained functional iHeps. We then demonstrated removal of the transgene to obtain transgene-free iHeps, which still maintained hepatocyte functions. This non-viral, transgene-free reprogramming method using the piggyBac vector may facilitate clinical applications of iHeps in upcoming cell therapy.
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Affiliation(s)
- Hokahiro Katayama
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kentaro Yasuchika
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuya Miyauchi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hidenobu Kojima
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryoya Yamaoka
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takayuki Kawai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Elena Yukie Yoshitoshi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Satoshi Ogiso
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sadahiko Kita
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Katsutaro Yasuda
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Naoya Sasaki
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ken Fukumitsu
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Junji Komori
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takamichi Ishii
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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38
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Yoshitoshi-Uebayashi EY, Toyoda T, Yasuda K, Kotaka M, Nomoto K, Okita K, Yasuchika K, Okamoto S, Takubo N, Nishikubo T, Soga T, Uemoto S, Osafune K. Modelling urea-cycle disorder citrullinemia type 1 with disease-specific iPSCs. Biochem Biophys Res Commun 2017; 486:613-619. [PMID: 28302489 DOI: 10.1016/j.bbrc.2017.03.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 03/11/2017] [Indexed: 11/17/2022]
Abstract
Citrullinemia type 1 (CTLN1) is a urea cycle disorder (UCD) caused by mutations of the ASS1 gene, which is responsible for production of the enzyme argininosuccinate synthetase (ASS), and classically presented as life-threatening hyperammonemia in newborns. Therapeutic options are limited, and neurological sequelae may persist. To understand the pathophysiology and find novel treatments, induced pluripotent stem cells (iPSCs) were generated from a CTLN1 patient and differentiated into hepatocyte-like cells (HLCs). CTLN1-HLCs have lower ureagenesis, recapitulating part of the patient's phenotype. l-arginine, an amino acid clinically used for UCD treatment, improved this phenotype in vitro. Metabolome analysis revealed an increase in tricarboxylic acid (TCA) cycle metabolites in CTLN1, suggesting a connection between CTLN1 and the TCA cycle. This CTLN1-iPSC model improves the understanding of CTLN1 pathophysiology and can be used to pursue new therapeutic approaches.
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Affiliation(s)
- Elena Yukie Yoshitoshi-Uebayashi
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan; Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Taro Toyoda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Katsutaro Yasuda
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan; Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Maki Kotaka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Keiko Nomoto
- Department of Pediatrics, Kitasato University School of Medicine, Kanagawa, Japan
| | - Keisuke Okita
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Kentaro Yasuchika
- Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinya Okamoto
- Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Noriyuki Takubo
- Department of Pediatrics and Adolescent Medicine, Juntendo University, Tokyo, Japan
| | - Toshiya Nishikubo
- Department of Pediatrics, Center for Perinatal Medicine, Nara Medical University, Nara, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Shinji Uemoto
- Department of Hepatobiliary, Pancreatic, Transplantation and Pediatric Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
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39
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Yasuda K, Hayashi Y, Yoshida T, Kashiwagi M, Nakagawa N, Michikawa T, Tanaka M, Ando R, Huang A, Hosoya T, McHugh TJ, Kuwahara M, Itohara S. Schizophrenia-like phenotypes in mice with NMDA receptor ablation in intralaminar thalamic nucleus cells and gene therapy-based reversal in adults. Transl Psychiatry 2017; 7:e1047. [PMID: 28244984 PMCID: PMC5545645 DOI: 10.1038/tp.2017.19] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 12/30/2016] [Indexed: 01/09/2023] Open
Abstract
In understanding the mechanism of schizophrenia pathogenesis, a significant finding is that drug abuse of phencyclidine or its analog ketamine causes symptoms similar to schizophrenia. Such drug effects are triggered even by administration at post-adolescent stages. Both drugs are N-methyl-d-aspartate receptor (NMDAR) antagonists, leading to a major hypothesis that glutamate hypofunction underlies schizophrenia pathogenesis. The precise region that depends on NMDAR function, however, is unclear. Here, we developed a mouse strain in which NMDARs in the intralaminar thalamic nuclei (ILN) were selectively disrupted. The mutant mice exhibited various schizophrenia-like phenotypes, including deficits in working memory, long-term spatial memory, and attention, as well as impulsivity, impaired prepulse inhibition, hyperlocomotion and hyperarousal. The electroencephalography analysis revealed that the mutant mice had a significantly reduced power in a wide range of frequencies including the alpha, beta and gamma bands, both during wake and rapid eye movement (REM) sleep, and a modest decrease of gamma power during non-REM sleep. Notably, restoring NMDARs in the adult ILN rescued some of the behavioral abnormalities. These findings suggest that NMDAR dysfunction in the ILN contributes to the pathophysiology of schizophrenia-related disorders. Furthermore, the reversal of inherent schizophrenia-like phenotypes in the adult mutant mice supports that ILN is a potential target site for a therapeutic strategy.
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Affiliation(s)
- K Yasuda
- Laboratory for Behavioral Genetics, RIKEN Brain Science Institute, Saitama, Japan,Department of Veterinary Pathophysiology and Animal Health, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, Japan
| | - Y Hayashi
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Ibaraki, Japan
| | - T Yoshida
- Laboratory for Behavioral Genetics, RIKEN Brain Science Institute, Saitama, Japan
| | - M Kashiwagi
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Ibaraki, Japan
| | - N Nakagawa
- Laboratory for Local Neuronal Circuits, RIKEN Brain Science Institute, Saitama, Japan
| | - T Michikawa
- Biotechnological Optics Research Team, RIKEN Center for Advanced Photonics, Saitama, Japan
| | - M Tanaka
- Laboratory for Neuron-Glia Circuitry, RIKEN Brain Science Institute, Saitama, Japan
| | - R Ando
- Laboratory for Behavioral Genetics, RIKEN Brain Science Institute, Saitama, Japan
| | - A Huang
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Saitama, Japan
| | - T Hosoya
- Laboratory for Local Neuronal Circuits, RIKEN Brain Science Institute, Saitama, Japan
| | - T J McHugh
- Laboratory for Circuit and Behavioral Physiology, RIKEN Brain Science Institute, Saitama, Japan
| | - M Kuwahara
- Department of Veterinary Pathophysiology and Animal Health, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, Japan
| | - S Itohara
- Laboratory for Behavioral Genetics, RIKEN Brain Science Institute, Saitama, Japan,Laboratory for Behavioral Genetics, RIKEN Brain Science Institute, Neural Circuit Genetics Research Building 102k, 2-1 Wako, Saitama 351-0198, Japan. E-mail;
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40
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Kawai T, Yasuchika K, Seo S, Higashi T, Ishii T, Miyauchi Y, Kojima H, Yamaoka R, Katayama H, Yoshitoshi EY, Ogiso S, Kita S, Yasuda K, Fukumitsu K, Nakamoto Y, Hatano E, Uemoto S. Identification of Keratin 19-Positive Cancer Stem Cells Associating Human Hepatocellular Carcinoma Using 18F-Fluorodeoxyglucose Positron Emission Tomography. Clin Cancer Res 2016; 23:1450-1460. [PMID: 27663597 DOI: 10.1158/1078-0432.ccr-16-0871] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 08/08/2016] [Accepted: 09/08/2016] [Indexed: 11/16/2022]
Abstract
Purpose: The current lack of tools for easy assessment of cancer stem cells (CSC) prevents the development of therapeutic strategies for hepatocellular carcinoma (HCC). We previously reported that keratin 19 (K19) is a novel HCC-CSC marker and that PET with 18F-fluorodeoxyglucose (18F-FDG) is an effective method for predicting postoperative outcome in hepatocellular carcinoma. Herein, we examined whether K19+ HCC-CSCs can be tracked using 18F-FDG-PET.Experimental Design: K19 and glucose transporter-1 (GLUT1) expression was evaluated by IHC in 98 hepatocellular carcinoma patients who underwent 18F-FDG-PET scans before primary tumor resection. Standardized uptake values (SUV) for primary tumors and tumor-to-nontumor SUV ratios (TNR) were calculated using FDG accumulation levels, and values were compared among K19+/K19- patients. Using hepatocellular carcinoma cell lines encoding with a K19 promoter-driven enhanced GFP, 18F-FDG uptake and GLUT1 expression were examined in FACS-isolated K19+/K19- cells.Results: In hepatocellular carcinoma patients, K19 expression was significantly correlated with GLUT1 expression and FDG accumulation. ROC analyses revealed that among preoperative clinical factors, TNR was the most sensitive indicator of K19 expression in hepatocellular carcinoma tumors. In hepatocellular carcinoma cells, FACS-isolated K19+ cells displayed significantly higher 18F-FDG uptake than K19- cells. Moreover, gain/loss-of-function experiments confirmed that K19 regulates 18F-FDG uptake through TGFβ/Smad signaling, including Sp1 and its downstream target GLUT1.Conclusions:18F-FDG-PET can be used to predict K19 expression in hepatocellular carcinoma and should thereby aid in the development of novel therapeutic strategies targeting K19+ HCC-CSCs. Clin Cancer Res; 23(6); 1450-60. ©2016 AACR.
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Affiliation(s)
- Takayuki Kawai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Hepatobiliary Surgery and Liver Transplantation, Pitié-Salpétrière Hospital, University of Pierre and Marie Curie (UPMC), Paris, France
| | - Kentaro Yasuchika
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Satoru Seo
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tatsuya Higashi
- Department of Diagnostic Radiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takamichi Ishii
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuya Miyauchi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hidenobu Kojima
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryoya Yamaoka
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hokahiro Katayama
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Elena Yukie Yoshitoshi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Satoshi Ogiso
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sadahiko Kita
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Katsutaro Yasuda
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Ken Fukumitsu
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Radiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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41
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Yasuda K, Tsukazaki A, Yoshimi R, Takahashi KS, Kawasaki M, Tokura Y. Large Unidirectional Magnetoresistance in a Magnetic Topological Insulator. Phys Rev Lett 2016; 117:127202. [PMID: 27689294 DOI: 10.1103/physrevlett.117.127202] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Indexed: 06/06/2023]
Abstract
We report current-direction dependent or unidirectional magnetoresistance (UMR) in magnetic or nonmagnetic topological insulator (TI) heterostructures, Cr_{x}(Bi_{1-y}Sb_{y})_{2-x}Te_{3}/(Bi_{1-y}Sb_{y})_{2}Te_{3}, that is several orders of magnitude larger than in other reported systems. From the magnetic field and temperature dependence, the UMR is identified to originate from the asymmetric scattering of electrons by magnons. In particular, the large magnitude of UMR is an outcome of spin-momentum locking and a small Fermi wave number at the surface of TI. In fact, the UMR is maximized around the Dirac point with the minimal Fermi wave number.
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Affiliation(s)
- K Yasuda
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - A Tsukazaki
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - R Yoshimi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - K S Takahashi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - M Kawasaki
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - Y Tokura
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
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Takaki S, Yasuda K, Yamamoto T, Matsumura S, Ishikawa N. Structure of ion tracks in ceria irradiated with high energy xenon ions. Progress in Nuclear Energy 2016. [DOI: 10.1016/j.pnucene.2016.07.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Anzai H, Hata K, Kishikawa J, Ishii H, Yasuda K, Otani K, Nishikawa T, Tanaka T, Kiyomatsu T, Kawai K, Nozawa H, Kazama S, Yamaguchi H, Ishihara S, Sunami E, Watanabe T. Appendiceal orifice inflammation is associated with proximal extension of disease in patients with ulcerative colitis. Colorectal Dis 2016; 18:O278-82. [PMID: 27354363 DOI: 10.1111/codi.13435] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [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: 12/13/2015] [Accepted: 04/28/2016] [Indexed: 12/24/2022]
Abstract
AIM Ulcerative colitis (UC) is considered to be a disease of continuous mucosal inflammation extending proximally from the rectum. However, appendiceal orifice inflammation (AOI) is a skip lesion with segments of continuous involvement from the rectum. The aim of this study was to examine the clinical characteristics and clinical course, particularly focused on proximal extension, of UC in patients with AOI. METHOD A retrospective evaluation of patients with UC who underwent total colonoscopy at the Department of Surgical Oncology, The University of Tokyo, from 2004 to 2014. The degree of AOI was graded endoscopically as follows: 0 (no inflammation); 1 (slight oedema); 2 (moderate inflammation); and 3 (marked inflammation). A total of 189 patient records were reviewed retrospectively. The presence of AOI was analysed with regard to the clinical information of each patient, and its association with proximal extension of proctitis or left-sided colitis was evaluated. RESULTS Of 189 patients with UC who underwent total colonoscopy at our institution, 92 were diagnosed with pancolitis, 50 with left-sided colitis and 47 with proctitis. Endoscopic findings of AOI were observed in 26 patients, including 11 (12.0%) with pancolitis, six (12.0%) with left-sided colitis and nine (19.1%) with proctitis. During follow up, proximal extension of the disease occurred in all nine patients with proctitis AOI. CONCLUSION AOI is more frequently observed in patients with proctitis. Our results showed correlations between AOI and subsequent proximal extension of mucosal inflammation in patients with proctitis.
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Affiliation(s)
- H Anzai
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - J Kishikawa
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - H Ishii
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Yasuda
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Otani
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - T Nishikawa
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - T Tanaka
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - T Kiyomatsu
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Kawai
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - H Nozawa
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - S Kazama
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - H Yamaguchi
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - S Ishihara
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - E Sunami
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - T Watanabe
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
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Kawai T, Yasuchika K, Ishii T, Miyauchi Y, Kojima H, Yamaoka R, Katayama H, Yoshitoshi EY, Ogiso S, Kita S, Yasuda K, Fukumitsu K, Komori J, Hatano E, Kawaguchi Y, Uemoto S. SOX9 is a novel cancer stem cell marker surrogated by osteopontin in human hepatocellular carcinoma. Sci Rep 2016; 6:30489. [PMID: 27457505 PMCID: PMC4960550 DOI: 10.1038/srep30489] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 07/06/2016] [Indexed: 12/13/2022] Open
Abstract
The current lack of cancer stem cell (CSC) markers that are easily evaluated by blood samples prevents the establishment of new therapeutic strategies in hepatocellular carcinoma (HCC). Herein, we examined whether sex determining region Y-box 9 (SOX9) represents a new CSC marker, and whether osteopontin (OPN) can be used as a surrogate marker of SOX9 in HCC. In HCC cell lines transfected with a SOX9 promoter-driven enhanced green fluorescence protein gene, FACS-isolated SOX9+ cells were capable of self-renewal and differentiation into SOX9− cells, and displayed high proliferation capacity in vitro. Xenotransplantation experiments revealed that SOX9+ cells reproduced, differentiated into SOX9− cells, and generated tumors at a high frequency in vivo. Moreover, SOX9+ cells were found to be involved in epithelial-mesenchymal transition (EMT) and activation of TGFb/Smad signaling. Gain/loss of function experiments showed that SOX9 regulates Wnt/beta-catenin signaling, including cyclin D1 and OPN. Immunohistochemistry of 166 HCC surgical specimens and serum OPN measurements showed that compared to SOX9− patients, SOX9+ patients had significantly poorer recurrence-free survival, stronger venous invasion, and higher serum OPN levels. In conclusion, SOX9 is a novel HCC-CSC marker regulating the Wnt/beta-catenin pathway and its downstream target, OPN. OPN is a useful surrogate marker of SOX9 in HCC.
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Affiliation(s)
- Takayuki Kawai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kentaro Yasuchika
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takamichi Ishii
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuya Miyauchi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hidenobu Kojima
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryoya Yamaoka
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hokahiro Katayama
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Elena Yukie Yoshitoshi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Satoshi Ogiso
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sadahiko Kita
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Katsutaro Yasuda
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Ken Fukumitsu
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Junji Komori
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshiya Kawaguchi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Ogawa N, Yoshimi R, Yasuda K, Tsukazaki A, Kawasaki M, Tokura Y. Zero-bias photocurrent in ferromagnetic topological insulator. Nat Commun 2016; 7:12246. [PMID: 27435028 PMCID: PMC4961789 DOI: 10.1038/ncomms12246] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 06/16/2016] [Indexed: 11/13/2022] Open
Abstract
Magnetic interactions in topological insulators cause essential modifications in the originally mass-less surface states. They offer a mass gap at the Dirac point and/or largely deform the energy dispersion, providing a new path towards exotic physics and applications to realize dissipation-less electronics. The nonequilibrium electron dynamics at these modified Dirac states unveil additional functions, such as highly efficient photon to spin-current conversion. Here we demonstrate the generation of large zero-bias photocurrent in magnetic topological insulator thin films on mid-infrared photoexcitation, pointing to the controllable band asymmetry in the momentum space. The photocurrent spectra with a maximal response to the intra-Dirac-band excitations can be a sensitive measure for the correlation between Dirac electrons and magnetic moments. By magnetic-doping, the electronic band structure of a topological insulator can be significantly altered to yield functional behaviour. Here, the authors demonstrate a large photocurrent response, and its control, under zero-bias in an optimally-designed magnetically-doped topological insulator thin film.
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Affiliation(s)
- N Ogawa
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
| | - R Yoshimi
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - K Yasuda
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - A Tsukazaki
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - M Kawasaki
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.,Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - Y Tokura
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.,Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
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Fushimi K, Ejiri H, Hazama R, Ikeda H, Imagawa K, Inoue K, Kanzaki G, Kozlov A, Orito R, Shima T, Takemoto Y, Teraoka Y, Umehara S, Yasuda K, Yoshida S. Dark matter search project PICO-LON. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/718/4/042022] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Nagata C, Konish K, Tamura T, Wada K, Hayashi M, Takeda N, Yasuda K. Skin pigmentation is inversely associated with insulin resistance in healthy Japanese women. Diabetes Metab 2016; 42:368-371. [PMID: 27161346 DOI: 10.1016/j.diabet.2016.04.001] [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: 02/09/2016] [Revised: 03/30/2016] [Accepted: 04/01/2016] [Indexed: 10/21/2022]
Abstract
AIM As a low-pigment skin type is prevalent in men and women with type 1 diabetes, it is possible that skin pigmentation may be associated with insulin resistance. This study aimed to cross-sectionally examine this association in healthy women. METHODS Study participants were 792 Japanese women who attended a health examination and were not taking any medication for diabetes. Skin pigmentation on the inner upper and lower arms and forehead was measured using a Mexameter® skin colorimeter, a narrow-band reflective spectrophotometer. Data are expressed as a melanin index, which quantifies melanin content. Fasting blood glucose and insulin levels were also measured, and homoeostasis model assessment for insulin resistance (HOMA-IR) scores were calculated. Information on medical history and lifestyle factors were obtained by a self-administered questionnaire, while data on sun exposure were collected through interviews. Plasma 25-hydroxyvitamin D levels were measured in a subsample of women (n=464). RESULTS Melanin indices at the inner upper and lower arms were significantly and inversely associated with fasting insulin levels and HOMA-IR after controlling for age, body mass index, smoking status, indicators for rater effects, cumulative sun exposure and season at the time of measurement. Additional adjustment for plasma 25-hydroxyvitamin D levels did not alter the results. CONCLUSION These data suggest that skin pigmentation is associated with insulin resistance, and encourage future studies into the potential role of melanin and related factors in glucose homoeostasis.
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Affiliation(s)
- C Nagata
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu 500-1194, Japan.
| | - K Konish
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu 500-1194, Japan
| | - T Tamura
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu 500-1194, Japan
| | - K Wada
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu 500-1194, Japan
| | - M Hayashi
- Department of Internal Medicine, Matsunami General Hospital, Gifu 501-6062, Japan
| | - N Takeda
- Department of Endocrinology and Metabolism, Murakami Memorial Hospital, Asahi University, Gifu 501-0233, Japan
| | - K Yasuda
- Department of Internal Medicine, Matsunami General Hospital, Gifu 501-6062, Japan
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Adachi N, Adamovitch V, Adjovi Y, Aida K, Akamatsu H, Akiyama S, Akli A, Ando A, Andrault T, Antonietti H, Anzai S, Arkoun G, Avenoso C, Ayrault D, Banasiewicz M, Banaśkiewicz M, Bernardini L, Bernard E, Berthet E, Blanchard M, Boreyko D, Boros K, Charron S, Cornette P, Czerkas K, Dameron M, Date I, De Pontbriand M, Demangeau F, Dobaczewski Ł, Dobrzyński L, Ducouret A, Dziedzic M, Ecalle A, Edon V, Endo K, Endo T, Endo Y, Etryk D, Fabiszewska M, Fang S, Fauchier D, Felici F, Fujiwara Y, Gardais C, Gaul W, Gurin L, Hakoda R, Hamamatsu I, Handa K, Haneda H, Hara T, Hashimoto M, Hashimoto T, Hashimoto K, Hata D, Hattori M, Hayano R, Hayashi R, Higasi H, Hiruta M, Honda A, Horikawa Y, Horiuchi H, Hozumi Y, Ide M, Ihara S, Ikoma T, Inohara Y, Itazu M, Ito A, Janvrin J, Jout I, Kanda H, Kanemori G, Kanno M, Kanomata N, Kato T, Kato S, Katsu J, Kawasaki Y, Kikuchi K, Kilian P, Kimura N, Kiya M, Klepuszewski M, Kluchnikov E, Kodama Y, Kokubun R, Konishi F, Konno A, Kontsevoy V, Koori A, Koutaka A, Kowol A, Koyama Y, Kozioł M, Kozue M, Kravtchenko O, Kruczała W, Kudła M, Kudo H, Kumagai R, Kurogome K, Kurosu A, Kuse M, Lacombe A, Lefaillet E, Magara M, Malinowska J, Malinowski M, Maroselli V, Masui Y, Matsukawa K, Matsuya K, Matusik B, Maulny M, Mazur P, Miyake C, Miyamoto Y, Miyata K, Miyata K, Miyazaki M, Molȩda M, Morioka T, Morita E, Muto K, Nadamoto H, Nadzikiewicz M, Nagashima K, Nakade M, Nakayama C, Nakazawa H, Nihei Y, Nikul R, Niwa S, Niwa O, Nogi M, Nomura K, Ogata D, Ohguchi H, Ohno J, Okabe M, Okada M, Okada Y, Omi N, Onodera H, Onodera K, Ooki S, Oonishi K, Oonuma H, Ooshima H, Oouchi H, Orsucci M, Paoli M, Penaud M, Perdrisot C, Petit M, Piskowski A, Płocharski A, Polis A, Polti L, Potsepnia T, Przybylski D, Pytel M, Quillet W, Remy A, Robert C, Sadowski M, Saito M, Sakuma D, Sano K, Sasaki Y, Sato N, Schneider T, Schneider C, Schwartzman K, Selivanov E, Sezaki M, Shiroishi K, Shustava I, Śniecińska A, Stalchenko E, Staroń A, Stromboni M, Studzińska W, Sugisaki H, Sukegawa T, Sumida M, Suzuki Y, Suzuki K, Suzuki R, Suzuki H, Suzuki K, Świderski W, Szudejko M, Szymaszek M, Tada J, Taguchi H, Takahashi K, Tanaka D, Tanaka G, Tanaka S, Tanino K, Tazbir K, Tcesnokova N, Tgawa N, Toda N, Tsuchiya H, Tsukamoto H, Tsushima T, Tsutsumi K, Umemura H, Uno M, Usui A, Utsumi H, Vaucelle M, Wada Y, Watanabe K, Watanabe S, Watase K, Witkowski M, Yamaki T, Yamamoto J, Yamamoto T, Yamashita M, Yanai M, Yasuda K, Yoshida Y, Yoshida A, Yoshimura K, Żmijewska M, Zuclarelli E. Measurement and comparison of individual external doses of high-school students living in Japan, France, Poland and Belarus-the 'D-shuttle' project. J Radiol Prot 2016; 36:49-66. [PMID: 26613195 DOI: 10.1088/0952-4746/36/1/49] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Twelve high schools in Japan (of which six are in Fukushima Prefecture), four in France, eight in Poland and two in Belarus cooperated in the measurement and comparison of individual external doses in 2014. In total 216 high-school students and teachers participated in the study. Each participant wore an electronic personal dosimeter 'D-shuttle' for two weeks, and kept a journal of his/her whereabouts and activities. The distributions of annual external doses estimated for each region overlap with each other, demonstrating that the personal external individual doses in locations where residence is currently allowed in Fukushima Prefecture and in Belarus are well within the range of estimated annual doses due to the terrestrial background radiation level of other regions/countries.
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Affiliation(s)
- N Adachi
- Adachi High School, 2-347 Kakunai, Nihonmatsu, Fukushima 964-0904, Japan
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Abstract
While certainly not a novel concept, faecal microbiota transplant (FMT) has recently garnered renewed interest in veterinary medicine due to its remarkable success in treating recurrent Clostridium difficile infection (CDI) in man. There is a dearth of information on indications and efficacy of FMT for the treatment of gastrointestinal disorders in the horse; however, based on evidence in man and other veterinary species, and anecdotal reports in horses, FMT may be a useful treatment for selected cases of acute and chronic diarrhoea and inflammatory bowel disease (IBD) in the horse. In the absence of evidence, expert opinion is offered on case selection and FMT procedure. More research is needed to explore the efficacy, indications and optimal preparation, storage and delivery of FMT to horses.
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Affiliation(s)
- K R Mullen
- Littleton Equine Medical Center Colorado USA
| | - K Yasuda
- Harvard T.H. Chan School of Public Health Boston Massachusetts USA
| | - T J Divers
- Department of Clinical Sciences Cornell University College of Veterinary Medicine Ithaca New York USA
| | - J S Weese
- Department of Pathobiology Ontario Veterinary College University of Guelph Canada
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Kita S, Yasuchika K, Ishii T, Katayama H, Yoshitoshi EY, Ogiso S, Kawai T, Yasuda K, Fukumitsu K, Mizumoto M, Uemoto S. The Protective Effect of Transplanting Liver Cells Into the Mesentery on the Rescue of Acute Liver Failure After Massive Hepatectomy. Cell Transplant 2016; 25:1547-59. [PMID: 26883767 DOI: 10.3727/096368916x690999] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Postoperative liver failure is one of the most critical complications following extensive hepatectomy. Although transplantation of allogeneic hepatocytes is an attractive therapy for posthepatectomy liver failure, transplanting cells via the portal veins typically causes portal vein embolization. The embolization by transplanted cells would be lethal in patients who have undergone massive hepatectomy. Thus, transplant surgeons need to select extrahepatic sites as transplant sites to prevent portal vein embolization. We aimed to investigate the mechanism of how liver cells transplanted into the mesentery protect recipient rats from acute liver failure after massive hepatectomy. We induced posthepatectomy liver failure by 90% hepatectomy in rats. Liver cells harvested from rat livers were transplanted into the mesenteries of hepatectomized rats. Twenty percent of the harvested cells, which consisted of hepatocytes and nonparenchymal cells, were transplanted into each recipient. The survival rate improved significantly in the liver cell transplantation group compared to the control group 7 days after hepatectomy (69 vs. 7%). Histological findings of the transplantation site, in vivo imaging system study findings, quantitative polymerase chain reaction assays of the transplanted cells, and serum albumin measurements of transplanted Nagase analbuminemic rats showed rapid deterioration of viable transplanted cells. Although viable transplanted cells deteriorated in the transplanted site, histological findings and an adenosine-5'-triphosphate (ATP) assay showed that the transplanted cells had a protective effect on the remaining livers. These results indicated that the paracrine effects of transplanted liver cells had therapeutic effects. The same protective effects were observed in the hepatocyte transplantation group, but not in the liver nonparenchymal cell transplantation group. Therefore, this effect on the remnant liver was mainly due to the hepatocytes among the transplanted liver cells. We demonstrated that transplanted liver cells protect the remnant liver from severe damage after massive hepatectomy.
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Affiliation(s)
- Sadahiko Kita
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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