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Iinuma R, Chen X, Masubuchi T, Ueda T, Tadakuma H. Size-Selective Capturing of Exosomes Using DNA Tripods. J Am Chem Soc 2024; 146:10293-10298. [PMID: 38569597 PMCID: PMC11027911 DOI: 10.1021/jacs.3c11067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 03/09/2024] [Accepted: 03/12/2024] [Indexed: 04/05/2024]
Abstract
Fractionating and characterizing target samples are fundamental to the analysis of biomolecules. Extracellular vesicles (EVs), containing information regarding the cellular birthplace, are promising targets for biology and medicine. However, the requirement for multiple-step purification in conventional methods hinders analysis of small samples. Here, we apply a DNA origami tripod with a defined aperture of binders (e.g., antibodies against EV biomarkers), which allows us to capture the target molecule. Using exosomes as a model, we show that our tripod nanodevice can capture a specific size range of EVs with cognate biomarkers from a broad distribution of crude EV mixtures. We further demonstrate that the size of captured EVs can be controlled by changing the aperture of the tripods. This simultaneous selection with the size and biomarker approach should simplify the EV purification process and contribute to the precise analysis of target biomolecules from small samples.
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Affiliation(s)
- Ryosuke Iinuma
- Graduate
School of Frontier Science, The University
of Tokyo, Chiba 277-8562, Japan
- JSR
Corporation, Ibaraki, 305-0841, Japan
| | - Xiaoxia Chen
- School
of Life Science and Technology, ShanghaiTech
University, Shanghai 201210, People’s Republic of China
| | - Takeya Masubuchi
- Graduate
School of Frontier Science, The University
of Tokyo, Chiba 277-8562, Japan
- Department
of Cell and Developmental Biology, School of Biological Sciences, University of California San Diego, La Jolla, California 92093, United States
| | - Takuya Ueda
- Graduate
School of Frontier Science, The University
of Tokyo, Chiba 277-8562, Japan
- Graduate
School of Science and Engineering, Waseda
University, Tokyo 162-8480, Japan
| | - Hisashi Tadakuma
- Graduate
School of Frontier Science, The University
of Tokyo, Chiba 277-8562, Japan
- School
of Life Science and Technology, ShanghaiTech
University, Shanghai 201210, People’s Republic of China
- Gene Editing
Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, People’s Republic
of China
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2
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Ueda T, Takamochi K, Fukui M, Ichikawa T, Hattori A, Matsunaga T, Oh S, Tomita H, Suzuki K. Significance of preoperative exercise oxygen desaturation in lung cancer with interstitial lung disease. Eur J Cardiothorac Surg 2024:ezae142. [PMID: 38598441 DOI: 10.1093/ejcts/ezae142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/20/2024] [Accepted: 04/05/2024] [Indexed: 04/12/2024] Open
Abstract
OBJECTIVES Evaluating the diffusing capacity for carbon monoxide (DLco) is crucial for patients with lung cancer and interstitial lung disease. However, the clinical significance of assessing exercise oxygen desaturation (EOD) remains unclear. METHODS We retrospectively analyzed 186 consecutive patients with interstitial lung disease who underwent lobectomy for non-small cell lung cancer. EOD was assessed using two-flight test (TFT), with TFT positivity defined as ≥ 5% SpO2 reduction. We investigated the impact of EOD and predicted postoperative (ppo) %DLco on postoperative complications and prognosis. RESULTS A total of 106 (57%) patients were identified as TFT-positive, and 58 (31%) patients had ppo% DLco < 30%. Pulmonary complications were significantly more prevalent in TFT-positive patients than in TFT-negative patients (52% vs 19%, P < 0.001), and multivariable analysis revealed that TFT-positivity was an independent risk factor (odds ratio 3.46, 95% confidence interval 1.70-7.07, P < 0.001), while ppo%DLco was not (P = 0.09). In terms of long-term outcomes, both TFT positivity and ppo%DLco < 30% independently predicted overall survival. We divided the patients into four groups based on TFT positivity and ppo%DLco status. TFT-positive patients with ppo%DLco < 30% exhibited the significantly lowest 5-year overall survival among four groups: ppo%DLco ≥ 30% and TFT-negative, 54.2%; ppo%DLco < 30% and TFT-negative, 68.8%; ppo%DLco ≥ 30% and TFT-positive, 38.1%; and ppo%DLco < 30% and TFT-positive, 16.7% (P = 0.001). CONCLUSIONS Incorporating EOD evaluation was useful for predicting postoperative complications and survival outcomes in patients with lung cancer and interstitial lung disease.
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Affiliation(s)
- Takuya Ueda
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
- Department of General Thoracic Surgery, Showa General Hospital, Tokyo, Japan
| | - Kazuya Takamochi
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Mariko Fukui
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Tomohiro Ichikawa
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
- Department of General Thoracic Surgery, Showa General Hospital, Tokyo, Japan
| | - Aritoshi Hattori
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Takeshi Matsunaga
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Shiaki Oh
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hisashi Tomita
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Kenji Suzuki
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Tokyo, Japan
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Oba K, Adachi M, Kobayashi T, Takaya E, Shimokawa D, Fukuda T, Takahashi K, Yagishita K, Ueda T, Tsunoda H. Deep learning model to predict Ki-67 expression of breast cancer using digital breast tomosynthesis. Breast Cancer 2024:10.1007/s12282-024-01549-7. [PMID: 38448777 DOI: 10.1007/s12282-024-01549-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 01/24/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND Developing a deep learning (DL) model for digital breast tomosynthesis (DBT) images to predict Ki-67 expression. METHODS The institutional review board approved this retrospective study and waived the requirement for informed consent from the patients. Initially, 499 patients (mean age: 50.5 years, range: 29-90 years) referred to our hospital for breast cancer were participated, 126 patients with pathologically confirmed breast cancer were selected and their Ki-67 expression measured. The Xception architecture was used in the DL model to predict Ki-67 expression levels. The high Ki-67 vs low Ki-67 expression diagnostic performance of our DL model was assessed by accuracy, sensitivity, specificity, areas under the receiver operating characteristic curve (AUC), and by using sub-datasets divided by the radiological characteristics of breast cancer. RESULTS The average accuracy, sensitivity, specificity, and AUC were 0.912, 0.629, 0.985, and 0.883, respectively. The AUC of the four subgroups separated by radiological findings for the mass, calcification, distortion, and focal asymmetric density sub-datasets were 0.890, 0.750, 0.870, and 0.660, respectively. CONCLUSIONS Our results suggest the potential application of our DL model to predict the expression of Ki-67 using DBT, which may be useful for preoperatively determining the treatment strategy for breast cancer.
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Affiliation(s)
- Ken Oba
- Department of Radiology, St. Luke's International Hospital, 9-1 Akashi-Cho, Chuo-Ku, Tokyo, 104-8560, Japan
| | - Maki Adachi
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Tomoya Kobayashi
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Eichi Takaya
- AI Lab, Tohoku University Hospital, 1-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8574, Japan
| | - Daiki Shimokawa
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Toshinori Fukuda
- Department of Radiology, Oregon Health of Science University, 3181 SW Sam Jackson Park Rd, Portland, OR, 97239-2098, USA
| | - Kengo Takahashi
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Kazuyo Yagishita
- Department of Radiology, St. Luke's International Hospital, 9-1 Akashi-Cho, Chuo-Ku, Tokyo, 104-8560, Japan
| | - Takuya Ueda
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan.
- AI Lab, Tohoku University Hospital, 1-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8574, Japan.
| | - Hiroko Tsunoda
- Department of Radiology, St. Luke's International Hospital, 9-1 Akashi-Cho, Chuo-Ku, Tokyo, 104-8560, Japan
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Sasaki T, Ueda T, Negishi Y, Toyoshima K, Yoshioka M, Ohta H, Araki A, Toba K. Using the prefrailty scale for appearance observation by nurses (PAON) for early detection of frailty. Geriatr Gerontol Int 2024; 24 Suppl 1:396-397. [PMID: 37964438 DOI: 10.1111/ggi.14728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/19/2023] [Accepted: 10/22/2023] [Indexed: 11/16/2023]
Affiliation(s)
- Tomoki Sasaki
- Department of Nursing, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Takuya Ueda
- Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Yui Negishi
- Department of Nursing, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Kenji Toyoshima
- Department of Diabetes, Metabolism, and Endocrinology, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Mami Yoshioka
- Healthy Aging Innovation Center, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Hiizuru Ohta
- Department of Nursing, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Atsushi Araki
- Department of Diabetes, Metabolism, and Endocrinology, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Kenji Toba
- CEO, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
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Osuka Y, Kojima N, Daimaru K, Ono R, Sugie M, Omura T, Motokawa K, Ueda T, Maruo K, Aoyama T, Inoue S, Sasai H. Effects of Radio-Taiso on Health-Related Quality of Life in Older Adults with Frailty: A Randomized Controlled Trial. J Epidemiol 2024:JE20230317. [PMID: 38403689 DOI: 10.2188/jea.je20230317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Abstract
BACKGROUND Radio-Taiso could be a sustainable public health strategy for maintaining quality of life (QoL) in older adults with frailty. This study aimed to investigate whether Radio-Taiso provided greater benefits for health-related quality of life (HR-QoL) and to identify the mechanisms underlying the effectiveness in this population. METHODS A 12-week randomized controlled trial enrolled 226 older Japanese adults with pre-frailty or frailty, assessed using the modified frailty phenotype. Participants were randomly allocated to the intervention (Radio-Taiso + nutrition program) or control (nutrition program) groups. The Radio-Taiso program comprised five 60-min group sessions and daily practice at the participants' homes. The primary outcome was the change in the mental domain of HR-QoL, assessed using the SF-36®. The secondary outcomes included six physical fitness items and exercise self-efficacy. RESULTS Overall, 104 and 105 participants in the intervention and control groups, respectively, were analyzed based on the intention-to-treat principle. The median (interquartile range) daily practice rate of Radio-Taiso was 94.1% (73.2-98.8%). Although general linear models adjusted for baseline values and allocation stratification factors showed that the intervention group obtained greater benefits (adjusted mean differences [95% confidence intervals]) in the up-and-go (0.3 [0.1, 0.6] s), 2-min step-in-place (-3.2 [-6.2, -0.2] steps) tests, and exercise self-efficacy scale (-1.4 [-2.6, -0.1] points) than the control group, there were no group differences in changes in the mental domain score of HR-QoL. CONCLUSIONS Radio-Taiso provided greater benefits for agility/dynamic balance, aerobic endurance, and exercise self-efficacy in older adults with frailty; however, these changes do not improve HR-QoL.
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Affiliation(s)
- Yosuke Osuka
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology
- Department of Frailty Research, Center for Gerontology and Social Science, Research Institute, National Center for Geriatrics and Gerontology
| | - Narumi Kojima
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology
| | - Kaori Daimaru
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology
| | - Risa Ono
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology
- Japan Radio-Taiso Federation
| | - Masamitsu Sugie
- Research Team for Human Care, Tokyo Metropolitan Institute for Geriatrics and Gerontology
| | - Takuya Omura
- Department of Endocrinology and Metabolism, Hospital, National Center for Geriatrics and Gerontology
- Department of Metabolic Research, Research Institute, National Center for Geriatrics and Gerontology
| | - Keiko Motokawa
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology
| | - Takuya Ueda
- The Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute for Geriatrics and Gerontology
| | - Kazushi Maruo
- Department of Biostatistics, Institute of Medicine, University of Tsukuba
| | | | - Shigeru Inoue
- Department of Preventive Medicine and Public Health, Tokyo Medical University
| | - Hiroyuki Sasai
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology
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Ueda T, Takamochi K, Hattori A, Fukui M, Matsunaga T, Suzuki K. Postoperative management using a digital drainage system for massive air leakage after pulmonary resection. Surg Today 2024; 54:130-137. [PMID: 37204499 DOI: 10.1007/s00595-023-02703-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 05/07/2023] [Indexed: 05/20/2023]
Abstract
PURPOSE To elucidate clinical outcomes using a digital drainage system (DDS) for massive air leakage (MAL) after pulmonary resection. METHODS A total of 135 consecutive patients with pulmonary resection air leakage of > 100 ml/min on the DDS were evaluated retrospectively. In this study, MAL was defined as ≥ 1000 ml/min on the DDS. We analyzed the clinical characteristics and surgical outcomes of patients with MAL compared with non-MAL (101-999 ml/min). Using the DDS data, the duration of the air leak was plotted with the Kaplan‒Meier method and compared using the log-rank test. RESULTS MAL was detected in 19 (14%) patients. The proportions of heavy smokers (P = 0.04) and patients with emphysematous lung (P = 0.03) and interstitial lung disease (P < 0.01) were higher in the MAL group than in the non-MAL group. The MAL group had a higher persistence rate of air leakage at 120 h after surgery than the non-MAL group (P < 0.01) and required significantly more frequent pleurodesis (P < 0.01). Drainage failure occurred in 2 (11%) and 5 (4%) patients from the MAL and non-MAL groups, respectively. Neither reoperation nor 30-day surgical mortality was observed in patients with MAL. CONCLUSIONS MAL was able to be treated conservatively without surgery using the DDS.
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Affiliation(s)
- Takuya Ueda
- Department of General Thoracic Surgery, Juntendo University School of Medicine, 3-1-3, Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan.
| | - Kazuya Takamochi
- Department of General Thoracic Surgery, Juntendo University School of Medicine, 3-1-3, Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Aritoshi Hattori
- Department of General Thoracic Surgery, Juntendo University School of Medicine, 3-1-3, Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Mariko Fukui
- Department of General Thoracic Surgery, Juntendo University School of Medicine, 3-1-3, Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Takeshi Matsunaga
- Department of General Thoracic Surgery, Juntendo University School of Medicine, 3-1-3, Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Kenji Suzuki
- Department of General Thoracic Surgery, Juntendo University School of Medicine, 3-1-3, Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
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7
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Ikumi S, Shiga T, Ueda T, Takaya E, Iwasaki Y, Kaiho Y, Tarasawa K, Fushimi K, Ito Y, Fujimori K, Yamauchi M. Intensive care unit mortality and cost-effectiveness associated with intensivist staffing: a Japanese nationwide observational study. J Intensive Care 2023; 11:60. [PMID: 38049894 PMCID: PMC10694900 DOI: 10.1186/s40560-023-00708-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/21/2023] [Indexed: 12/06/2023] Open
Abstract
BACKGROUND Japan has four types of intensive care units (ICUs) that are divided into two categories according to the management fee charged per day: ICU management fees 1 and 2 (ICU1/2) (equivalent to high-intensity staffing) and 3 and 4 (ICU3/4) (equivalent to low-intensity staffing). Although ICU1/2 charges a higher rate than ICU3/4, no cost-effectiveness analysis has been performed for ICU1/2. This study evaluated the clinical outcomes and cost-effectiveness of ICU1/2 compared with those of ICU3/4. METHODS This retrospective observational study used a nationwide Japanese administrative database to identify patients admitted to ICUs between April 2020 and March 2021 and divided them into the ICU1/2 and ICU3/4 groups. The ICU mortality rates and in-hospital mortality rates were determined, and the incremental cost-effectiveness ratio (ICER) (Japanese Yen (JPY)/QALY), defined as the difference between quality-adjusted life year (QALY) and medical costs, was compared between ICU1/2 and ICU3/4. Data analysis was performed using the Chi-squared test; an ICER of < 5 million JPY/QALY was considered cost-effective. RESULTS The ICU1/2 group (n = 71,412; 60.7%) had lower ICU mortality rates (ICU 1/2: 2.6% vs. ICU 3/4: 4.3%, p < 0.001) and lower in-hospital mortality rates (ICU 1/2: 6.1% vs. ICU 3/4: 8.9%, p < 0.001) than the ICU3/4 group (n = 46,330; 39.3%). The average cost per patient of ICU1/2 and ICU3/4 was 2,249,270 ± 1,955,953 JPY and 1,682,546 ± 1,588,928 JPY, respectively, with a difference of 566,724. The ICER was 718,659 JPY/QALY, which was below the cost-effectiveness threshold. CONCLUSIONS ICU1/2 is associated with lower ICU patient mortality than ICU3/4. Treatments under ICU1/2 are more cost-effective than those under ICU3/4, with an ICER of < 5 million JPY/QALY.
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Affiliation(s)
- Saori Ikumi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
- AI Lab, Tohoku University Hospital, Sendai, Japan
| | - Takuya Shiga
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
- Experience Design and Alliance Section, Tohoku University Hospital, Sendai, Japan.
- Department of Biodesign, Center for Research, Education, and Innovation, Tohoku University Hospital, Sendai, Japan.
- Department of Intensive Care Unit, Tohoku University Hospital, Sendai, Japan.
| | - Takuya Ueda
- AI Lab, Tohoku University Hospital, Sendai, Japan
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Eichi Takaya
- AI Lab, Tohoku University Hospital, Sendai, Japan
| | - Yudai Iwasaki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yu Kaiho
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kunio Tarasawa
- Department of Health Administration and Policy, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kiyohide Fushimi
- Department of Health Policy and Informatics, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan
| | - Yukiko Ito
- College of Policy Studies, Tsuda University, Tokyo, Japan
| | - Kenji Fujimori
- Department of Health Administration and Policy, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
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8
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Abe T, Yamashiro D, Yamashita M, Ueda T, Suzuki H, Fujiwara Y, Awata S, Toba K. Assessments of cognitive function of older adults in community general support centers: The IRIDE cohort study. Geriatr Gerontol Int 2023; 23:887-888. [PMID: 37735093 DOI: 10.1111/ggi.14677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/28/2023] [Accepted: 09/04/2023] [Indexed: 09/23/2023]
Affiliation(s)
- Takumi Abe
- Research Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
- Integrated Research Initiative for Living Well with Dementia, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Daichi Yamashiro
- Integrated Research Initiative for Living Well with Dementia, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Mari Yamashita
- Integrated Research Initiative for Living Well with Dementia, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Takuya Ueda
- The Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Hiroyuki Suzuki
- Research Team for Social Participation and Healthy Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
- Integrated Research Initiative for Living Well with Dementia, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Yoshinori Fujiwara
- Integrated Research Initiative for Living Well with Dementia, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
- Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Shuichi Awata
- Integrated Research Initiative for Living Well with Dementia, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
- Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Kenji Toba
- Integrated Research Initiative for Living Well with Dementia, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
- Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
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9
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Hongo H, Nishiyama M, Ueda T, Ishida Y, Kasai M, Tanaka R, Nagase H, Maruyama A. Comparison of neurological manifestation in children with and without coronavirus 2019 experiencing seizures with fever. Epilepsy Behav Rep 2023; 24:100625. [PMID: 37860712 PMCID: PMC10583046 DOI: 10.1016/j.ebr.2023.100625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/21/2023] Open
Abstract
Whether neurologic symptoms due to SARS-CoV-2 differ from those of non-SARS-CoV-2 viral infection is unclear. We aimed to describe these neurological manifestations and compare the clinical characteristics and treatments in children with seizures and fever with or without COVID-19. We retrospectively analyzed data from 105 hospitalized children (<18 years) with clinical seizures and fever between September 2021 and August 2022. We compared the clinical characteristics and treatments between the COVID-19 (n = 20) and non-COVID-19 (n = 85) groups. Patients with COVID-19 were older than those without (32.5 [20-86] months vs. 20 [16-32] months, p = 0.029). Seizure type and duration and impaired consciousness duration did not differ between groups. Six and 32 patients experienced status epilepticus lasting 30 min in the COVID-19 and non-COVID-19 groups, respectively. Most treatments did not differ between groups; however, electroencephalography was used less frequently for COVID-19. Neurological sequelae occurred in one and four patients in the COVID-19 and non-COVID-19 groups, respectively. In conclusion, seizures with fever due to SARS-CoV-2 were more common in older children. Seizure characteristics and neurologic sequelae did not differ in children with and those without COVID-19. In general, electroencephalography was used less during COVID-19 for infection control measures.
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Affiliation(s)
- Hiroto Hongo
- Department of Neurology, Hyogo Prefectural Kobe Children’s Hospital, Kobe, Japan
| | - Masahiro Nishiyama
- Department of Neurology, Hyogo Prefectural Kobe Children’s Hospital, Kobe, Japan
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takuya Ueda
- Department of Neurology, Hyogo Prefectural Kobe Children’s Hospital, Kobe, Japan
| | - Yusuke Ishida
- Department of Neurology, Hyogo Prefectural Kobe Children’s Hospital, Kobe, Japan
| | - Masashi Kasai
- Division of Infectious Disease, Department of Pediatrics, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
| | - Ryojiro Tanaka
- Department of Emergency and General Pediatrics, Hyogo Prefectural Kobe Children’s Hospital, Kobe, Japan
| | - Hiroaki Nagase
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Azusa Maruyama
- Department of Neurology, Hyogo Prefectural Kobe Children’s Hospital, Kobe, Japan
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10
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Miura H, Kenjo M, Doi Y, Ueda T, Nakao M, Ozawa S, Nagata Y. Changes in Target Coverage and Dose to the Normal Brain during Fractionated Stereotactic Radiotherapy for Metastatic Brain Tumors. Int J Radiat Oncol Biol Phys 2023; 117:e698. [PMID: 37786046 DOI: 10.1016/j.ijrobp.2023.06.2180] [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) Fractionated stereotactic radiotherapy (SRT) has been applied to large brain metastases to reduce the risk of radiation necrosis. For fractionated SRT, potential of interfractional tumor changes during the treatment period, such as tumor size, shape, and geometry, must be considered to improve the tumor local control. Our center performs adaptive re-planning for large brain metastases based on repeat MRI verification with a contrast agent in the middle of the treatment period. Purpose of this study is to evaluate the dosimetric impact of the changes in tumor size, shape, and geometry on the doses to the targets and normal brain in patients with brain metastases undergoing fractionated SRT. MATERIALS/METHODS Fifteen solitary large intracranial metastatic lesions treated with fractionated SRT were investigated. Standardized planning MRI (MRI-1) and repeat verification MRI (MRI-2) were performed during the middle of the irradiation period. The GTV on the MRI-1 and MRI-2 scans was contoured by the same oncologist. The PTV was created by adding an isotropic margin of 1 mm from the GTV in all directions. Volumetric modulated arc therapy (VMAT) with beam energies of 6 MV (flattening filter-free mode) was used and plans were normalized such that PTV D95% or D98% was equal to the prescribed dose. Beam configuration and intensity on the initial VMAT plan were used to evaluate the dose to the tumor and the normal brain on MRI-2. We evaluated the impact of D98% on the GTV using the plans on the MRI-1 and MRI-2 scans. For the normal brain, the V90%, V80%, and V50% were investigated. RESULTS The median GTV changed from 9.8 cc (range of 3.2-33.0 cc) to 9.7 cc (range of 2.8-36.5 cc) (p = 0.482). Three and four tumors exhibited volume shrinkage and enlargement changes of >10%. Five tumors exhibited volume shrinkage and enlargement changes of <10%. Three tumors showed no volume changes. Of the 15 large brain metastases, 12 tumors required treatment plan modification. The dosimetric parameters of the GTV, PTV, and normal brain did not significantly differ between the MRI-1 and MRI-2 scans. Regarding the tumor dose, the D98% to the GTV increased in patients with tumor shrinkage because of dose inhomogeneity and decreased in patients with tumor enlargement. The V90%, V80%, and V50% increase with decreasing tumor volumes and were linearly related to the tumor volume difference, with a coefficient of determination of 0.97, 0.98, and 0.97, respectively. CONCLUSION Our study demonstrated the usefulness of repeat verification MRI for adaptive radiotherapy in the middle of the treatment period due to changes in tumor size, shape, and geometry in patients with brain metastases. Repeated MRI should be considered to evaluate the dose to the target and normal brain, which improves tumor local control and reduces brain necrosis, to reduce the magnitude of underdosing to the target or overdosing to the normal brain during the treatment period.
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Affiliation(s)
- H Miura
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, Japan; Department of Radiation Oncology, Institute of Biomedical & Health Science, Hiroshima University, Hiroshima, Japan
| | - M Kenjo
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, Japan; Department of Radiation Oncology, Institute of Biomedical & Health Science, Hiroshima University, Hiroshima, Japan
| | - Y Doi
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, Japan; Department of Radiation Oncology, Institute of Biomedical & Health Science, Hiroshima University, Hiroshima, Japan
| | - T Ueda
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, Japan
| | - M Nakao
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, Japan; Department of Radiation Oncology, Institute of Biomedical & Health Science, Hiroshima University, Hiroshima, Japan
| | - S Ozawa
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, Japan; Department of Radiation Oncology, Institute of Biomedical & Health Science, Hiroshima University, Hiroshima, Japan
| | - Y Nagata
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, Japan; Department of Radiation Oncology, Institute of Biomedical & Health Science, Hiroshima University, Hiroshima, Japan
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11
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Goto E, Takamochi K, Kishikawa S, Hayashi T, Ueda T, Hattori A, Fukui M, Matsunaga T, Suzuki K. Stepwise progression of invasive mucinous adenocarcinoma based on radiological and biological characteristics. Lung Cancer 2023; 184:107348. [PMID: 37619407 DOI: 10.1016/j.lungcan.2023.107348] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 08/09/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023]
Abstract
INTRODUCTION Invasive mucinous lung adenocarcinoma (IMA) has unique radiological findings and pathological characteristics. IMA is classified into solitary and pneumonic types; however, it is unclear whether these are biologically identical. METHODS A single-center retrospective analysis was performed for 70 IMA patients (solitary type [n = 38] and pneumonic type [n = 32]) who underwent pulmonary resection between January 2010 and December 2018. We compared clinical and biological characteristics between the two types. RESULTS The frequencies of genetic alternations such as EGFR, KRAS, BRAF, GNAS, ERBB2, TP53, NRG1, and MET were not different. Immunohistochemically, expression of MUC1 was significantly more common in the pneumonic type (5.0% versus 20.0%, p = 0.01) and diffuse MUC6 positive in the solitary type (39.0% versus 13.0%, p = 0.02). We further classified solitary types into those with or without ground-glass opacity (GGO) and pneumonic types into those with or without crazy-paving appearance (CPA), and evaluated their surgical outcomes. Five-year overall survival and relapse free survival rates were 95.8%/86.6%, 64.3%/70.7%, 74.6%/68.9%, and 50.0%/28.6% in patients with solitary type with GGO, solitary type without GGO, pneumonic type without CPA, and pneumonic type with CPA, respectively. CONCLUSIONS There were no differences in genetic alternations; however, mucin expression pattern was different. Surgical outcomes were different according to the presence of GGO in the solitary type and the presence of CPA in the pneumonic type. These findings suggested a stepwise progression from solitary to pneumonic IMA.
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Affiliation(s)
- Eisuke Goto
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Japan
| | - Kazuya Takamochi
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Japan.
| | - Satsuki Kishikawa
- Department of Human Pathology, Juntendo University School of Medicine, Japan
| | - Takuo Hayashi
- Department of Human Pathology, Juntendo University School of Medicine, Japan
| | - Takuya Ueda
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Japan
| | - Aritoshi Hattori
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Japan
| | - Mariko Fukui
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Japan
| | - Takeshi Matsunaga
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Japan
| | - Kenji Suzuki
- Department of General Thoracic Surgery, Juntendo University School of Medicine, Japan
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Kimura A, Takagi T, Thamamongood T, Sakamoto S, Ito T, Seki I, Okamoto M, Aono H, Serada S, Naka T, Imataka H, Miyake K, Ueda T, Miyanokoshi M, Wakasugi K, Iwamoto N, Ohmagari N, Iguchi T, Nitta T, Takayanagi H, Yamashita H, Kaneko H, Tsuchiya H, Fujio K, Handa H, Suzuki H. Extracellular aaRSs drive autoimmune and inflammatory responses in rheumatoid arthritis via the release of cytokines and PAD4. Ann Rheum Dis 2023; 82:1153-1161. [PMID: 37400117 DOI: 10.1136/ard-2023-224055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/23/2023] [Indexed: 07/05/2023]
Abstract
OBJECTIVES Recent studies demonstrate that extracellular-released aminoacyl-tRNA synthetases (aaRSs) play unique roles in immune responses and diseases. This study aimed to understand the role of extracellular aaRSs in the pathogenesis of rheumatoid arthritis (RA). METHODS Primary macrophages and fibroblast-like synoviocytes were cultured with aaRSs. aaRS-induced cytokine production including IL-6 and TNF-α was detected by ELISA. Transcriptomic features of aaRS-stimulated macrophages were examined using RNA-sequencing. Serum and synovial fluid (SF) aaRS levels in patients with RA were assessed using ELISA. Peptidyl arginine deiminase (PAD) 4 release from macrophages stimulated with aaRSs was detected by ELISA. Citrullination of aaRSs by themselves was examined by immunoprecipitation and western blotting. Furthermore, aaRS inhibitory peptides were used for inhibition of arthritis in two mouse RA models, collagen-induced arthritis and collagen antibody-induced arthritis. RESULTS All 20 aaRSs functioned as alarmin; they induced pro-inflammatory cytokines through the CD14-MD2-TLR4 axis. Stimulation of macrophages with aaRSs displayed persistent innate inflammatory responses. Serum and SF levels of many aaRSs increased in patients with RA compared with control subjects. Furthermore, aaRSs released PAD4 from living macrophages, leading to their citrullination. We demonstrate that aaRS inhibitory peptides suppress cytokine production and PAD4 release by aaRSs and alleviate arthritic symptoms in a mouse RA model. CONCLUSIONS Our findings uncovered the significant role of aaRSs as a novel alarmin in RA pathogenesis, indicating that their blocking agents are potent antirheumatic drugs.
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Affiliation(s)
- Akihiro Kimura
- Dep of Immunology and Pathology, Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Ichikawa-shi, Chiba, Japan
| | - Takeshi Takagi
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
| | - Thiprampai Thamamongood
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathumthani, Thailand
| | - Satoshi Sakamoto
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
| | - Takumi Ito
- Center for Future Medical Research, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Iwao Seki
- Research and Development Department, AYUMI Pharmaceutical Corporation, Chuo-ku, Tokyo, Japan
| | - Masahiro Okamoto
- Research and Development Department, AYUMI Pharmaceutical Corporation, Chuo-ku, Tokyo, Japan
| | - Hiroyuki Aono
- Research and Development Department, AYUMI Pharmaceutical Corporation, Chuo-ku, Tokyo, Japan
| | - Satoshi Serada
- Institute for Biomedical Sciences Molecular Pathophysiology, Iwate Medical University, Morioka, Iwate, Japan
| | - Tetsuji Naka
- Institute for Biomedical Sciences Molecular Pathophysiology, Iwate Medical University, Morioka, Iwate, Japan
| | - Hiroaki Imataka
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, Hyogo, Japan
| | - Kensuke Miyake
- Division of Innate Immunity, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Takuya Ueda
- Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Miki Miyanokoshi
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Tokyo, Japan
| | - Keisuke Wakasugi
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Tokyo, Japan
| | - Noriko Iwamoto
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan
| | - Norio Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan
| | - Takahiro Iguchi
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takeshi Nitta
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroshi Takayanagi
- Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroyuki Yamashita
- Division of Rheumatic Diseases, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hiroshi Kaneko
- Division of Rheumatic Diseases, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan
| | - Haruka Tsuchiya
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Keishi Fujio
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroshi Handa
- Center for Future Medical Research, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Harumi Suzuki
- Dep of Immunology and Pathology, Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Ichikawa-shi, Chiba, Japan
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Shimokawa D, Takahashi K, Oba K, Takaya E, Usuzaki T, Kadowaki M, Kawaguchi K, Adachi M, Kaneno T, Fukuda T, Yagishita K, Tsunoda H, Ueda T. Deep learning model for predicting the presence of stromal invasion of breast cancer on digital breast tomosynthesis. Radiol Phys Technol 2023; 16:406-413. [PMID: 37466807 DOI: 10.1007/s12194-023-00731-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 07/03/2023] [Accepted: 07/03/2023] [Indexed: 07/20/2023]
Abstract
To develop a deep learning (DL)-based algorithm to predict the presence of stromal invasion in breast cancer using digital breast tomosynthesis (DBT). Our institutional review board approved this retrospective study and waived the requirement for informed consent from the patients. Initially, 499 patients (mean age 50.5 years, age range, 29-90 years) who were referred to our hospital under the suspicion of breast cancer and who underwent DBT between March 1 and August 31, 2019, were enrolled in this study. Among the 499 patients, 140 who underwent surgery after being diagnosed with breast cancer were selected for the analysis. Based on the pathological reports, the 140 patients were classified into two groups: those with non-invasive cancer (n = 20) and those with invasive cancer (n = 120). VGG16, Resnet50, DenseNet121, and Xception architectures were used as DL models to differentiate non-invasive from invasive cancer. The diagnostic performance of the DL models was assessed based on the area under the receiver operating characteristic curve (AUC). The AUC for the four models were 0.56 [95% confidence intervals (95% CI) 0.49-0.62], 0.67 (95% CI 0.62-0.74), 0.71 (95% CI 0.65-0.75), and 0.75 (95% CI 0.69-0.81), respectively. Our proposed DL model trained on DBT images is useful for predicting the presence of stromal invasion in breast cancer.
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Affiliation(s)
- Daiki Shimokawa
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Kengo Takahashi
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Ken Oba
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-Cho, Chuo-Ku, Tokyo, 104-8560, Japan
| | - Eichi Takaya
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
- AI Lab, Tohoku University Hospital, 1-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8574, Japan
| | - Takuma Usuzaki
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Mizuki Kadowaki
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Kurara Kawaguchi
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Maki Adachi
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Tomofumi Kaneno
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Toshinori Fukuda
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-Cho, Chuo-Ku, Tokyo, 104-8560, Japan
| | - Kazuyo Yagishita
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-Cho, Chuo-Ku, Tokyo, 104-8560, Japan
| | - Hiroko Tsunoda
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-Cho, Chuo-Ku, Tokyo, 104-8560, Japan
| | - Takuya Ueda
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan.
- AI Lab, Tohoku University Hospital, 1-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8574, Japan.
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14
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Fukumoto K, Miyazono Y, Ueda T, Harada Y, Tadakuma H. Evaluating the effect of two-dimensional molecular layout on DNA origami-based transporters. Nanoscale Adv 2023; 5:2590-2601. [PMID: 37143804 PMCID: PMC10153088 DOI: 10.1039/d3na00088e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 02/08/2023] [Accepted: 04/09/2023] [Indexed: 05/06/2023]
Abstract
Cellular transport systems are sophisticated and efficient. Hence, one of the ultimate goals of nanotechnology is to design artificial transport systems rationally. However, the design principle has been elusive, because how motor layout affects motile activity has not been established, partially owing to the difficulty in achieving a precise layout of the motile elements. Here, we employed a DNA origami platform to evaluate the two-dimensional (2D) layout effect of kinesin motor proteins on transporter motility. We succeeded in accelerating the integration speed of the protein of interest (POI) to the DNA origami transporter by up to 700 times by introducing a positively charged poly-lysine tag (Lys-tag) into the POI (kinesin motor protein). This Lys-tag approach allowed us to construct and purify a transporter with high motor density, allowing a precise evaluation on the 2D layout effect. Our single-molecule imaging showed that the densely packed layout of kinesin decreased the run length of the transporter, although its velocity was moderately affected. These results indicate that steric hindrance is a critical parameter to be considered in the design of transport systems.
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Affiliation(s)
- Kodai Fukumoto
- Institute for Protein Research, Osaka University Osaka 565-0871 Japan
- Department of Biological Sciences, Graduate School of Science, Osaka University Osaka 560-0043 Japan
| | - Yuya Miyazono
- Graduate School of Frontier Science, The University of Tokyo Chiba 277-8562 Japan
| | - Takuya Ueda
- Graduate School of Frontier Science, The University of Tokyo Chiba 277-8562 Japan
- Graduate School of Science and Engineering, Waseda University Tokyo 162-8480 Japan
| | - Yoshie Harada
- Institute for Protein Research, Osaka University Osaka 565-0871 Japan
- Center for Quantum Information and Quantum Biology, Osaka University Osaka 560-0043 Japan
- Premium Research Institute for Human Metaverse Medicine (WPI-PRIMe), Osaka University Osaka 565-0871 Japan
| | - Hisashi Tadakuma
- Institute for Protein Research, Osaka University Osaka 565-0871 Japan
- Graduate School of Frontier Science, The University of Tokyo Chiba 277-8562 Japan
- School of Life Science and Technology, ShanghaiTech University Shanghai 201210 People's Republic of China
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University Shanghai 201210 People's Republic of China
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15
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Shimokawa D, Takahashi K, Kurosawa D, Takaya E, Oba K, Yagishita K, Fukuda T, Tsunoda H, Ueda T. Deep learning model for breast cancer diagnosis based on bilateral asymmetrical detection (BilAD) in digital breast tomosynthesis images. Radiol Phys Technol 2023; 16:20-27. [PMID: 36342640 DOI: 10.1007/s12194-022-00686-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 11/09/2022]
Abstract
The purpose of this study was to develop a deep learning model to diagnose breast cancer by embedding a diagnostic algorithm that examines the asymmetry of bilateral breast tissue. This retrospective study was approved by the institutional review board. A total of 115 patients who underwent breast surgery and had pathologically confirmed breast cancer were enrolled in this study. Two image pairs [230 pairs of bilateral breast digital breast tomosynthesis (DBT) images with 115 malignant tumors and contralateral tissue (M/N), and 115 bilateral normal areas (N/N)] were generated from each patient enrolled in this study. The proposed deep learning model is called bilateral asymmetrical detection (BilAD), which is a modified convolutional neural network (CNN) model of Xception with two-dimensional tensors for bilateral breast images. BilAD was trained to classify the differences between pairs of M/N and N/N datasets. The results of the BilAD model were compared to those of the unilateral control CNN model (uCNN). The results of BilAD and the uCNN were as follows: accuracy, 0.84 and 0.75; sensitivity, 0.73 and 0.58; and specificity, 0.93 and 0.92, respectively. The mean area under the receiver operating characteristic curve of BilAD was significantly higher than that of the uCNN (p = 0.02): 0.90 and 0.84, respectively. The proposed deep learning model trained by embedding a diagnostic algorithm to examine the asymmetry of bilateral breast tissue improves the diagnostic accuracy for breast cancer.
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Affiliation(s)
- Daiki Shimokawa
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Kengo Takahashi
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Daiya Kurosawa
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan
| | - Eichi Takaya
- AI Lab, Tohoku University Hospital, 1-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8574, Japan
| | - Ken Oba
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-Cho, Chuo-Ku, Tokyo, Tokyo, 104-8560, Japan
| | - Kazuyo Yagishita
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-Cho, Chuo-Ku, Tokyo, Tokyo, 104-8560, Japan
| | - Toshinori Fukuda
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-Cho, Chuo-Ku, Tokyo, Tokyo, 104-8560, Japan
| | - Hiroko Tsunoda
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-Cho, Chuo-Ku, Tokyo, Tokyo, 104-8560, Japan
| | - Takuya Ueda
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8575, Japan. .,AI Lab, Tohoku University Hospital, 1-1 Seiryo-Machi, Aoba-Ku, Sendai, Miyagi, 980-8574, Japan.
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16
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Kotani T, Sakuma T, Iijima Y, Sato S, Nakanishi K, Ueda T, Hara T, Nakayama K, Sunami T, Asada T, Akazawa T, Kishida S, Sasaki Y, Inage K, Shiga Y, Minami S, Ohtori S. Acute celiac artery compression syndrome with superior mesenteric artery stenosis and aortic stenosis: A rare but life-threatening complication after adult spinal deformity surgery. J Orthop Sci 2023; 28:490-494. [PMID: 32819791 DOI: 10.1016/j.jos.2020.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 06/08/2020] [Revised: 07/01/2020] [Accepted: 07/08/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Toshiaki Kotani
- Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan.
| | - Tsuyoshi Sakuma
- Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Yasushi Iijima
- Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Shinichi Sato
- Department of Gastroenterology, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Kazuya Nakanishi
- Department of Emergency and Critical Care Medicine, Japanese Red Cross Narita Hospital, Narita, Chiba, Japan
| | - Takuya Ueda
- Department of Clinical Imaging, Tohoku University, Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Takeshi Hara
- Department of Radiology, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Keita Nakayama
- Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Takahiro Sunami
- Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Tomoyuki Asada
- Department of Orthopedic Surgery, University of Tsukuba, Tsukuba, Japan
| | - Tsutomu Akazawa
- Department of Orthopedic Surgery, St. Marianna University, School of Medicine, Kawasaki, Japan
| | - Shunji Kishida
- Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Yu Sasaki
- Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Kazuhide Inage
- Department of Orthopedic Surgery, Chiba University, Graduate School of Medicine, Chiba, Japan
| | - Yasuhiro Shiga
- Department of Orthopedic Surgery, Chiba University, Graduate School of Medicine, Chiba, Japan
| | - Shohei Minami
- Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan
| | - Seiji Ohtori
- Department of Orthopedic Surgery, Chiba University, Graduate School of Medicine, Chiba, Japan
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Nakano K, Nochioka K, Yasuda S, Tamori D, Shiroto T, Sato Y, Takaya E, Miyata S, Kawakami E, Ishikawa T, Ueda T, Shimokawa H. Machine learning approach to stratify complex heterogeneity of chronic heart failure: A report from the CHART-2 study. ESC Heart Fail 2023; 10:1597-1604. [PMID: 36788745 DOI: 10.1002/ehf2.14288] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/26/2022] [Accepted: 01/09/2023] [Indexed: 02/16/2023] Open
Abstract
AIMS Current approaches to classify chronic heart failure (HF) subpopulations may be limited due to the diversity of pathophysiology and co-morbidities in chronic HF. We aimed to elucidate the clusters of chronic patients with HF by data-driven approaches with machine learning in a hospital-based registry. METHODS AND RESULTS A total of 4649 patients with a broad spectrum of left ventricular ejection fraction (LVEF) in the CHART-2 (Chronic Heart Failure Analysis and Registry in the Tohoku District-2) study were enrolled to this study. Chronic HF patients were classified using random forest clustering with 56 multiscale clinical parameters. We assessed the influence of the clusters on cardiovascular death, non-cardiovascular death, all-cause death, and free from hospitalization by HF. Latent class analysis using random forest clustering identified 10 clusters with four primary components: cardiac function (LVEF, left atrial and ventricular diameters, diastolic blood pressure, and brain natriuretic peptide), renal function (glomerular filtration rate and blood urea nitrogen), anaemia (red blood cell, haematocrit, haemoglobin, and platelet count), and nutrition (albumin and body mass index). All 11 significant clinical parameters in the four primary components and two disease aetiologies (ischaemic heart disease and valvular heart disease) showed statistically significant differences among the 10 clusters (P < 0.01). Cluster 1 (26.7% of patients), which is characterized by preserved LVEF (<59%, 37% of the total) with lowest brain natriuretic peptide (>111.3 pg/mL, 0.9%) and lowest left atrial diameter (>42 mm, 37.4%), showed the best 5 year survival rate of 98.1% for cardiovascular death, 95.9% for non-cardiovascular death, 92.9% for all-cause death, and 91.7% for free from hospitalization by HF. Cluster 10 (6.0% of the total), which is co-morbid disorders of all four primary components, showed the worst survival rate of 39.1% for cardiovascular death, 68.9% for non-cardiovascular death, 23.9% for all-cause death, and 28.1% for free from hospitalization by HF. CONCLUSIONS These results suggest the potential applicability of the machine leaning approach, providing useful clinical prognostic information to stratify complex heterogeneity in patients with HF.
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Affiliation(s)
- Kenji Nakano
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kotaro Nochioka
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Satoshi Yasuda
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Daito Tamori
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takashi Shiroto
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yudai Sato
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Eichi Takaya
- AI Lab, Tohoku University Hospital, Sendai, Japan
| | - Satoshi Miyata
- Teikyo University Graduate School of Public Health, Tokyo, Japan
| | - Eiryo Kawakami
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Sendai, Japan.,Advanced Data Science Project (ADSP), RIKEN Information R&D and Strategy Headquarters, Yokohama, Japan.,Artificial Intelligence Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Institute for Advanced Academic Research (IAAR), Chiba University, Chiba, Japan
| | - Tetsuo Ishikawa
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Sendai, Japan.,Advanced Data Science Project (ADSP), RIKEN Information R&D and Strategy Headquarters, Yokohama, Japan.,Artificial Intelligence Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Extended Intelligence for Medicine, The Ishii-Ishibashi Laboratory, Keio University School of Medicine, Tokyo, Japan
| | - Takuya Ueda
- Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Sendai, Japan.,AI Lab, Tohoku University Hospital, Sendai, Japan
| | - Hiroaki Shimokawa
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.,International University of Health and Welfare, Otawara, Japan
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18
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Hongo F, Ueda T, Takaha N, Tamada S, Nakatani T, Miki T, Ukimura O. Phase I/II study of multipeptide cancer vaccine IMA901 in Japanese patients with advanced renal cell cancer with long-term follow up. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00386-x] [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: 02/12/2023]
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19
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Yamane T, Ueda T, Nishiyama M, Hongo H, Ishida Y, Maruyama A. Anti-MOG antibody-positive meningoencephalitis without demyelinating lesions. Pediatr Int 2023; 65:e15612. [PMID: 37589376 DOI: 10.1111/ped.15612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/21/2023] [Accepted: 06/26/2023] [Indexed: 08/18/2023]
Affiliation(s)
- Tetsuya Yamane
- Department of Neurology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
| | - Takuya Ueda
- Department of Neurology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
| | - Masahiro Nishiyama
- Department of Neurology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hiroto Hongo
- Department of Neurology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
| | - Yusuke Ishida
- Department of Neurology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
| | - Azusa Maruyama
- Department of Neurology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan
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20
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Yamagami T, Yagi M, Tanaka S, Anzai S, Ueda T, Omori Y, Tanaka C, Shiba Y. Relationship between Cognitive Decline and Daily Life Gait among Elderly People Living in the Community: A Preliminary Report. Dement Geriatr Cogn Dis Extra 2023; 13:1-9. [PMID: 36891225 PMCID: PMC9987256 DOI: 10.1159/000528507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/29/2022] [Indexed: 03/06/2023] Open
Abstract
Introduction Early detection and intervention are important to prevent dementia. Gait parameters have been recognized as a potentially easy screening tool for mild cognitive impairment (MCI); however, differences in gait parameters between cognitive healthy individuals (CHI) and MCI are small. Daily life gait change may be used to detect cognitive decline earlier. In the present study, we aimed to clarify the relationship between cognitive decline and daily life gait. Methods We performed 5-Cog function tests and daily life and laboratory-based gait assessments on 155 community-dwelling elderly people (75.5 ± 5.4 years old). Daily life gait was measured for 6 days using an iPod-touch with an accelerometer. Laboratory-based 10-m gait (fast pace) was measured using an electronic portable walkway. Results The subjects consisted of 98 CHI (63.2%) and 57 cognitive decline individuals (CDI; 36.8%). Daily life maximum gait velocity in the CDI group (113.7 [97.0-128.5] cm/s) was significantly slower than that in the CHI group (121.2 [105.8-134.3] cm/s) (p = 0.032). In the laboratory-based gait, the stride length variability in the CDI group (2.6 [1.8-4.1]) was significantly higher than that in the CHI group (1.8 [1.2-2.7]) (p < 0.001). The maximum gait velocity in daily life gait was weakly but significantly correlated with stride length variability in laboratory-based gait (ρ = -0.260, p = 0.001). Conclusion We found an association between cognitive decline and slower daily life gait velocity among community-dwelling elderly people.
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Affiliation(s)
- Tetsuya Yamagami
- Department of Rehabilitation Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Japan
| | - Motoi Yagi
- Product Division, CLIMB Co. LTD., Takasaki, Japan
| | - Shigeya Tanaka
- Department of Physical Therapy, Faculty of Health Care, Takasaki University of Health and Welfare, Takasaki, Japan
| | - Saori Anzai
- Department of Physical Therapy, Faculty of Social Work Studies, Josai International University, Togane, Japan
| | - Takuya Ueda
- Tokyo Metropolitan Support Center for Preventive Long-term and Frail Elderly Care, Tokyo Metropolitan Institute of Gerontology, Itabashi, Japan
| | - Yoshitsugu Omori
- Department of Rehabilitation, Faculty of Medical Sciences, Shona University of Medical Sciences, Yokohama, Japan
| | - Chika Tanaka
- Nursing Care Insurance Section, Zama City Office, Zama, Japan
| | - Yoshitaka Shiba
- Department of Physical Therapy, Faculty of Health Sciences, Fukushima Medical University, Fukushima, Japan
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21
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Baba H, Ikumi S, Aoyama S, Ishikawa T, Asai Y, Matsunaga N, Ohmagari N, Kanamori H, Tokuda K, Ueda T, Kawakami E. Statistical Analysis of Mortality Rates of Coronavirus Disease 2019 (COVID-19) Patients in Japan Across the 4C Mortality Score Risk Groups, Age Groups, and Epidemiological Waves: A Report From the Nationwide COVID-19 Cohort. Open Forum Infect Dis 2022; 10:ofac638. [PMID: 36686635 PMCID: PMC9846187 DOI: 10.1093/ofid/ofac638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/23/2022] [Indexed: 11/26/2022] Open
Abstract
Background The mortality rates of coronavirus disease 2019 (COVID-19) have been changed across the epidemiological waves. The aim was to investigate the differences in mortality rates of COVID-19 patients in Japan across the 6 epidemiological waves stratified by age group and Coronavirus Clinical Characterisation Consortium (4C) mortality score risk group. Methods A total of 56 986 COVID-19 patients in the COVID-19 Registry Japan from 2 March 2020 to 1 February 2022 were enrolled. These patients were categorized into 4 risk groups based on their 4C mortality score. Mortality rates of each risk group were calculated separately for different age groups: 18-64, 65-74, 75-89, and ≥90 years. In addition, mortality rates across the wave periods were calculated separately in 2 age groups: <75 and ≥75 years. All calculated mortality rates were compared with reported data from the United Kingdom (UK) during the early epidemic. Results The mortality rates of patients in Japan were significantly lower than in the UK across the board, with the exception of patients aged ≥90 years at very high risk. The mortality rates of patients aged ≥75 years at very high risk in the fourth and fifth wave periods showed no significant differences from those in the UK, whereas those in the sixth wave period were significantly lower in all age groups and in all risk groups. Conclusions The present analysis showed that COVID-19 patients had a lower mortality rate in the most recent sixth wave period, even among patients ≥75 years old at very high risk.
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Affiliation(s)
- Hiroaki Baba
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Saori Ikumi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shotaro Aoyama
- Advanced Data Science Project, RIKEN Information R&D and Strategy Headquarters, Yokohama, Japan
| | - Tetsuo Ishikawa
- Advanced Data Science Project, RIKEN Information R&D and Strategy Headquarters, Yokohama, Japan,Department of Extended Intelligence for Medicine, Ishii-Ishibashi Laboratory, Keio University School of Medicine, Tokyo, Japan,Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Sendai, Japan,Artificial Intelligence Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yusuke Asai
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan,Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Nobuaki Matsunaga
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Norio Ohmagari
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan,Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Hajime Kanamori
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Koichi Tokuda
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takuya Ueda
- Correspondence: Takuya Ueda, Department of Clinical Imaging, Tohoku University Graduate School of Medicine, Tohoku University Hospital, AI Lab, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan ()
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22
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Misumi K, Matsue Y, Nogi K, Kitai T, Oishi S, Suzuki S, Yamamoto M, Kida T, Okumura T, Nogi M, Ishihara S, Ueda T, Kawakami R, Saito Y, Minamino T. Derivation and validation of a machine learning-based risk prediction model for in-hospital mortality in patients with acute heart failure. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Although risk stratification is important in patients with acute heart failure (AHF) to predict patient prognosis, pre-existing risk models have not often been used due to its complexity. Recently, machine learning methods have been presented as an alternative approach to analyzing the predictive probability of large clinical datasets.
Purpose
The aim of this study is to develop a user-friendly risk score developed by one of machine learning methods and compare the performance of the new risk score to the existing conventional risk models.
Methods
A machine-learning-based risk model was developed using least absolute shrinkage and selection operator (LASSO) regression by identifying predictors of in-hospital mortality in the derivation cohort (REALITY-AHF) and externally validating and comparing its performance with two pre-existing risk models: the Get With The Guidelines risk score incorporating brain natriuretic peptide and hypochloremia (GWTG-BNP-Cl-RS) and the acute decompensated heart failure national registry (ADHERE) risk model.
Results
In-hospital deaths in the derivation and validation (NARA-HF) cohorts were 76 (5.1%) and 61 (4.9%), respectively. The risk score comprised four variables (systolic blood pressure, blood urea nitrogen, serum chloride, and C-reactive protein) and was developed according to the results of the LASSO regression weighting the coefficient for selected variables using a logistic regression model (4V-RS). Even though 4V-RS comprised fewer variables, In the validation cohort, it showed a higher area under the receiver operating characteristic curve (AUC) than the ADHERE risk model (AUC, 0.783 vs. 0.740; P=0.059) and a significant improvement in net reclassification (0.359; 95% CI, 0.10–0.67; p=0.006). 4V-RS performed similarly to GWTG-BNP-Cl-RS in terms of discrimination (AUC, 0.783 vs. 0.759; p=0.426) and net reclassification (0.176; 95% CI, −0.08–0.43; p=0.178).
Conclusions
The 4V-RS model comprising only four readily available data points at the time of admission performed similarly to the more complex pre-existing risk model in patients with AHF.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): Cardiovascular Research Fund
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Affiliation(s)
- K Misumi
- Saiseikai Utsunomiya Hospital, Department of Cardiology , Tochigi , Japan
| | - Y Matsue
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Biology and Medicine , Tokyo , Japan
| | - K Nogi
- Nara Medical University, Department of Cardiovascular Medicine , Kashihara , Japan
| | - T Kitai
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - S Oishi
- National Cerebral and Cardiovascular Center Hospital, Department of Cardiology , Osaka , Japan
| | - S Suzuki
- Fukushima Medical University, Department of Cardiovascular Medicine , Fukushima , Japan
| | - M Yamamoto
- Tsukuba University, Cardiovascular Division, Faculty of Medicine , Tsukuba , Japan
| | - T Kida
- St. Marianna University School of Medicine, Department of Pharmacology , Kawasaki , Japan
| | - T Okumura
- Nagoya University Graduate School of Medicine, Department of Cardiology , Nagoya , Japan
| | - M Nogi
- Nara Medical University, Department of Cardiovascular Medicine , Kashihara , Japan
| | - S Ishihara
- Nara Medical University, Department of Cardiovascular Medicine , Kashihara , Japan
| | - T Ueda
- Nara Medical University, Department of Cardiovascular Medicine , Kashihara , Japan
| | - R Kawakami
- Nara Medical University, Department of Cardiovascular Medicine , Kashihara , Japan
| | - Y Saito
- Nara Medical University, Department of Cardiovascular Medicine , Kashihara , Japan
| | - T Minamino
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Biology and Medicine , Tokyo , Japan
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23
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Ejiri M, Kawai H, Yasunaga M, Shirobe M, Ito K, Ueda T, Obuchi S. [Association between issues in activities and psychosocial health status in the social positions of older residents' community-based activities: a cross-sectional study]. Nihon Koshu Eisei Zasshi 2022; 69:805-813. [PMID: 35768235 DOI: 10.11236/jph.21-155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objectives When local governments and community nurses provide support for community-based activities led by older residents, it is imperative to reduce the burden of participants in leadership positions. This study aimed to identify the issues associated with the activities by social position, such as leadership, support, and regular participation, to discuss effective support for community-based activities and to examine the association between social position, relating issues, and psychosocial health.Methods Participants in community-based activities were recruited by the local government in Tokyo, Japan. Overall, 2,367 people from 155 activity groups from 40 municipalities responded. Social positions in the groups were defined as leaders who manage activities; supporters who support leaders; and regular members who do not have any specific role. The participants chose the issues of community-based activities from 10 items. Psychosocial health was measured by the WHO-5 well-being index (WHO-5) and Lubben social network scale-6 (LSNS-6). The relationship between recognition of issues and social positions were examined by the chi-square test. Interaction effects of social positions and issues (with or without) on the WHO-5 and LSNS-6 were investigated using a two-way analysis of covariance.Results The final sample comprised 2,096 respondents: 174 leaders, 296 supporters, and 1,626 regular members. There was a significant association between recognition of social positions and issues in the groups: respondents who reported no issues in the activities comprised 8.6% of the leaders, 27.7% of the supporters, and 53.6% of the regular members (P<0.001). There was a large difference in recognition between roles for issues related to group management, such as the lack of management members. There was no significant interaction between these issues and social positions in either WHO-5 or LSNS-6 (P=0.729, P=0.171, respectively). The main effect of the social positions was significant in both analyses (P<0.001). The leaders and supporters showed significantly higher WHO-5 and LSNS-6 scores than regular members.Conclusion The issues that the participants reported differed by social positions in activities. It may be effective to provide support according to the difficulty of sharing issues within the group. Regardless of whether or not the participants report issues, leaders and supporters had improved psychosocial health than regular members. The study concludes that organizational position in community-based activities may offer health benefits for older adults.
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Affiliation(s)
| | | | | | | | - Kumiko Ito
- Tokyo Metropolitan Institute of Gerontology
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24
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Osuka Y, Kojima N, Sugie M, Omura T, Motokawa K, Ueda T, Maruo K, Ono R, Aoyama T, Inoue S, Kim H, Sasai H. Effects of a home-based Radio-Taiso exercise programme on health-related quality of life in older adults with frailty: protocol for an assessor-blind randomised controlled trial. BMJ Open 2022; 12:e063201. [PMID: 36137626 PMCID: PMC9511584 DOI: 10.1136/bmjopen-2022-063201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
INTRODUCTION Few clinical trials have examined the effects of home-based exercise programmes on health-related quality of life (HR-QoL) in older adults with frailty. Radio-Taiso is the most famous exercise programme in Japan. A home-based Radio-Taiso exercise programme may serve as an accessible, scalable and sustainable care intervention for older adults with frailty. The primary aim of this trial is to test whether older adults with frailty who are prescribed our home-based Radio-Taiso exercise programme will receive greater benefits for HR-QoL compared with those who are not prescribed the exercise programme. Potential mechanisms underlying the effectiveness of the programme and the effects of the programme on daily lifestyle will also be investigated. METHODS AND ANALYSIS This assessor-blind randomised controlled trial will be conducted at the Tokyo Metropolitan Institute of Gerontology (TMIG) in Itabashi-ku, Tokyo, Japan. From April to May 2022, 226 older adults with prefrailty or frailty according to the revised Japanese version of the Cardiovascular Health Study criteria will be included from a large database. After a baseline assessment in June 2022, participants will be randomly assigned to the intervention (home-based Radio-Taiso exercise and nutrition programme) or control (nutrition programme) groups at a 1:1 ratio. After intervention completion, a follow-up assessment will be conducted in September 2022. The primary outcome is the change in the mental domain of HR-QoL assessed using SF-36. Secondary outcomes include physical and role/social domains and subscales of HR-QoL, frailty phenotype, physical fitness, posture, cognition, exercise self-efficacy, depressive symptoms, brain-derived neurotrophic factor, social network, habitual energy intake, physical activity and sleep conditions. ETHICS AND DISSEMINATION The Research Ethics Committee of TMIG has approved the research protocol. This trial will be conducted in accordance with the principles of the Declaration of Helsinki. The findings will be presented at international academic conferences and published in peer-reviewed international journals. TRIAL REGISTRATION NUMBER UMIN000047229.
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Affiliation(s)
- Yosuke Osuka
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Japan
| | - Narumi Kojima
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Japan
| | - Masamitsu Sugie
- Department of Cardiology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Itabashi-ku, Japan
| | - Takuya Omura
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Japan
| | - Keiko Motokawa
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Japan
| | - Takuya Ueda
- The Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Japan
| | - Kazushi Maruo
- Department of Biostatistics, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Risa Ono
- Japan Radio-Taiso Federation, Chiyoda-ku, Japan
| | | | - Shigeru Inoue
- Department of Preventive Medicine and Public Health, Tokyo Medical University, Shinjyuku-ku, Japan
| | - Hunkyung Kim
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Japan
| | - Hiroyuki Sasai
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Japan
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Ueda T, Kuraoka M, Seino S, Kobayashi E, Hattori S, Sawaoka S, Nofuji Y, Motokawa Y, Nonaka K, Murayama H, Fujiwara Y. [Suggestions on the application of concepts and types of "Kayoinoba" contributing to long-term care prevention]. Nihon Koshu Eisei Zasshi 2022; 69:497-504. [PMID: 35545522 DOI: 10.11236/jph.21-140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Kobayashi E, Ueda T, Takahashi J, Seino S, Nofuji Y, Nemoto Y, Kuraoka M, Fujiwara Y. [Diversity of participants and autonomy of community residents by types of "Kayoi-no-ba": findings from a survey of urban voluntary groups in which older adults participate]. Nihon Koshu Eisei Zasshi 2022; 69:544-553. [PMID: 35545521 DOI: 10.11236/jph.21-138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objectives A recent long-term care insurance policy encourages the promotion of various types of "Kayoi-no-ba," or places to go, not limited to those focusing on functional training, as resident activities are expected to keep older adults from needing care. In this study, Kayoi-no-ba were voluntary groups in which older adults participated, and their attributes were examined in terms of "diversity of participants" and "autonomy of community residents," based on the type of group.Methods The staff from the preventing long-term care division in each of the 38 municipalities in Tokyo selected 175 voluntary groups that met three criteria: (1) more than three community residents participate in activities at least once a month, (2) participants are primarily older adults or multi-generational residents including older adults, and (3) community residents participate in group management. Representatives from 165 groups responded to the questionnaire. For the group categorization, a latent class analysis was performed using the goals and activities of the group. Participants' age, gender, and health status were used to assess diversity. The number of residents who managed and/or supported group activities and the precise role the residents played in the activities were used to assess autonomy.Results The groups were categorized into four types: "Physical Exercises," where the primary activity was physical exercise; "Multi-purpose," which included various purposes and activities; "Social Interaction Oriented," where interaction with others was the goal, but physical exercise was not; and "Non-Interaction," where social interaction was not the goal. Participants in the Multi-purpose group ranged in age and were more likely to have health problems, such as mobility limitations, dementia, and frailty, than those in the Physical Exercises and Social Interaction Oriented groups. Moreover, the Multi-purpose group had more resident managers and supporters involved in various roles.Conclusion The Multi-purpose group had the most diverse participants and autonomy of residents. However, the type of Kayoi-no-ba should not be considered fixed. The support system should encourage flexible changes such as adding a new activity depending on the situation and the varying needs of the residents.
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Affiliation(s)
- Erika Kobayashi
- Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology
| | - Takuya Ueda
- The Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute of Gerontology
| | - Junta Takahashi
- The Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute of Gerontology
| | - Satoshi Seino
- Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology
| | - Yu Nofuji
- Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology
| | - Yuta Nemoto
- The Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute of Gerontology
| | - Masataka Kuraoka
- The Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute of Gerontology
| | - Yoshinori Fujiwara
- Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology
- The Tokyo Metropolitan Support Center for Preventative Long-term and Frail Elderly Care, Tokyo Metropolitan Institute of Gerontology
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Berhanu S, Ueda T, Alix JH. The E. coli DnaK chaperone stimulates the α-complementation of β-galactosidase. J Basic Microbiol 2022; 62:669-688. [PMID: 35289419 DOI: 10.1002/jobm.202100487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/11/2022] [Accepted: 02/20/2022] [Indexed: 11/09/2022]
Abstract
pUC18 and pUC19 are well-known high copy-number plasmid vectors routinely used for DNA cloning purposes. We show here that, in E. coli transformed by native pUC18, the α-complementation of β-galactosidase (i.e., mediated by the peptide LacZα18) is intrinsically weak and slow, but is greatly stimulated by the DnaK/DnaJ/GrpE chaperone system. In contrast, the α-complementation mediated by the peptide LacZα19 (in E. coli transformed by the native pUC19) is much more efficient, and therefore does not require the assistance of the DnaK chaperone machinery. The marked difference between these two LacZα peptides is reproduced in cell-free protein expression system coupled with α-complementation. We conclude that: (i) α-complementation of β-galactosidase is DnaK-mediated depending upon the LacZα peptide donor. (ii) DnaK, sensu stricto, is not necessary for α-complementation, but can enhance it to a great extent. (iii) this observation could be used to establish an easy and inexpensive method for screening small molecules libraries in search of DnaK inhibitors and also for deciphering the DnaK-mediated protein quality control mechanism. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Samuel Berhanu
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba Prefecture, Japan
| | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba Prefecture, Japan
| | - Jean-Hervé Alix
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba Prefecture, Japan
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Kitahara Y, Nomura H, Nishihara N, Ueda T, Watanabe S, Saito I, Ueyama J. [Survey of Arsenic/Heavy Metals and Pesticide Residues in Edible Insects for Human Consumption or Supplied in Japan]. Shokuhin Eiseigaku Zasshi 2022; 63:136-140. [PMID: 36047089 DOI: 10.3358/shokueishi.63.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Arsenic (As) and heavy metals (Cd, Hg, Pb, and Cu) and pesticide residues in 14 edible insects were investigated. The maximum levels of elements were 6.15 for As, 0.82 for Cd, 0.50 for Hg, 0.67 for Pb, and 297.7 ppm for Cu. Fenobucarb (or BPMC) has been quantified through GC- and LC-MS/MS analysis at a concentration of approximately 3 ppm. Further studies of the contaminants may help ensure the safety of edible insect consumption.
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Affiliation(s)
- Yugo Kitahara
- Department of Biomolecular Sciences, Field of Omics Health Sciences, Nagoya University Graduate School of Medicine
| | - Hiroshi Nomura
- Department of Biomolecular Sciences, Field of Omics Health Sciences, Nagoya University Graduate School of Medicine
| | - Nanami Nishihara
- Department of Biomolecular Sciences, Field of Omics Health Sciences, Nagoya University Graduate School of Medicine
| | - Takuya Ueda
- Department of Medical Technology, Nagoya University School of Health Sciences
| | - Satoru Watanabe
- Department of Biomolecular Sciences, Field of Omics Health Sciences, Nagoya University Graduate School of Medicine
| | - Isao Saito
- Department of Biomolecular Sciences, Field of Omics Health Sciences, Nagoya University Graduate School of Medicine
| | - Jun Ueyama
- Department of Biomolecular Sciences, Field of Omics Health Sciences, Nagoya University Graduate School of Medicine
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Suzumura S, Ito K, Narukawa R, Takano E, Satoh K, Ueda T, Kondo I. Effect on Physical Functions of Older Adults When Refraining from Going out due to COVID-19 Restrictions. Adv Gerontol 2022; 12. [PMCID: PMC9774067 DOI: 10.1134/s2079057022040154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The study investigated the effect of refraining from going out during the coronavirus disease 2019 pandemic on physical function in community-dwelling older adults. The study included 49 patients who underwent home-visit rehabilitation. Four parameters of physical function—grip strength, five-times sit-to-stand test, single-leg stance test, and standing test for imbalance and disequilibrium (SIDE)—were assessed. They were evaluated before (March 2020) and after (May 2020) the state emergency was imposed, and the results were compared. The grip strength decreased significantly. A significant difference was also observed in the proportion of different SIDE levels in the study group before and after the implementation of the state emergency. The number of SIDE 2a or lower patients increased during the state emergency (p < 0.001). Comprehensive community support and rehabilitation are necessary to maintain physical function in older individuals. In particular, we believe that there is a need to utilize remote rehabilitation using digital devices (such as internet-based guidance) so that older adults can continue to exercise at home.
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Affiliation(s)
- S. Suzumura
- Faculty of Rehabilitation, School of Health Sciences, Fujita Health University, 470-1192 Toyoake City, Aichi Japan ,Department of Rehabilitation Medicine, National Center for Geriatrics and Gerontology, 474-8511 Obu City, Aichi Japan
| | - K. Ito
- Department of Rehabilitation Medicine, National Center for Geriatrics and Gerontology, 474-8511 Obu City, Aichi Japan
| | - R. Narukawa
- Department of Rehabilitation Medicine, National Center for Geriatrics and Gerontology, 474-8511 Obu City, Aichi Japan
| | - E. Takano
- Assistive Robotics Center, National Center for Geriatrics and Gerontology, 474-8511 Obu City, Aichi Japan
| | - K. Satoh
- Department of Rehabilitation Medicine, National Center for Geriatrics and Gerontology, 474-8511 Obu City, Aichi Japan
| | - T. Ueda
- Department of Rehabilitation Medicine, National Center for Geriatrics and Gerontology, 474-8511 Obu City, Aichi Japan
| | - I. Kondo
- Department of Rehabilitation Medicine, National Center for Geriatrics and Gerontology, 474-8511 Obu City, Aichi Japan
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Kudo S, Kawasumi Y, Usui A, Igari Y, Funayama M, Ueda T, Ishibashi T, Saito H. Cervical intervertebral separation caused by trauma on post-mortem computed tomography: Possibility of a diagnosis based on intervertebral gas. Forensic Sci Int 2021; 330:111049. [PMID: 34844118 DOI: 10.1016/j.forsciint.2021.111049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 09/28/2021] [Accepted: 10/05/2021] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Gas is a common finding in cervical intervertebral separation. However, intervertebral gas is also found in many decedents without intervertebral separation. Here, we quantified intervertebral gas and examined its value in the diagnosis of cervical intervertebral separation. METHODS We retrospectively reviewed data from 1118 decedents who underwent post-mortem computed tomography (CT) and autopsy from May 2011 to July 2016 and selected those with cervical intervertebral gas with or without intervertebral separation. These data comprised 56 cervical intervertebral spaces with gas [intervertebral separation in 19 (33.9%)] in 43 subjects [intervertebral separation in 17 (39.5%)]. We categorised the decedents according to gas volume, position, and shape and determined the significance of the differences between the decedents with and without separation. RESULTS The gas volume did not differ significantly between decedents with and without separation (p = 0.063). However, there were significant differences in the gas position between decedents with and without separation. In the sagittal plane: gas was seen in the "centred" position in the ventral-to-dorsal direction in more decedents without separation than in those with separation (p = 0.018). Gas was seen in the ventral-to-dorsal positions in more decedents with separation than in those without separation (p = 0.049). In the cranio-caudal direction, gas in the upper position was more common in decedents with separation than in those without separation in the sagittal plane (p = 0.03). In the coronal plane: gas was seen in the upper position more frequently in decedents with separation in the cranio-caudal direction than in those without separation (p = 0.001). A significant difference in gas shape was observed only in the coronal plane (p = 0.024); irregular gas was associated with decedents without separation. CONCLUSION Gas in the ventral-to-dorsal and upper positions in the sagittal plane and in the upper position in the coronal plane was rather indicative of cervical intervertebral separation. An irregular gas shape in the coronal plane was indicative of degenerative changes.
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Affiliation(s)
- Seina Kudo
- Tohoku University Graduate School of Medicine, Department of Clinical Imaging, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan.
| | - Yusuke Kawasumi
- Tohoku University Graduate School of Medicine, Department of Clinical Imaging, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Akihito Usui
- Tohoku University Graduate School of Medicine, Department of Diagnostic Image Analysis, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Yui Igari
- Tohoku University Graduate School of Medicine, Department of Forensic Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Masato Funayama
- Tohoku University Graduate School of Medicine, Department of Forensic Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Takuya Ueda
- Tohoku University Graduate School of Medicine, Department of Clinical Imaging, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Tadashi Ishibashi
- Tohoku University Graduate School of Medicine, Department of Clinical Imaging, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Haruo Saito
- Tohoku University Graduate School of Medicine, Department of Diagnostic Image Analysis, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
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Aoyama R, Masuda K, Shimojo M, Kanamori T, Ueda T, Shimizu Y. In vitro reconstitution of the Escherichia coli 70S ribosome with a full set of recombinant ribosomal proteins. J Biochem 2021; 171:227-237. [PMID: 34750629 PMCID: PMC8863084 DOI: 10.1093/jb/mvab121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/04/2021] [Indexed: 11/27/2022] Open
Abstract
Many studies of the reconstitution of the Escherichia coli small ribosomal subunit from its individual molecular parts have been reported, but contrastingly, similar studies of the large ribosomal subunit have not been well performed to date. Here, we describe protocols for preparing the 33 ribosomal proteins of the E. coli 50S subunit and demonstrate successful reconstitution of a functionally active 50S particle that can perform protein synthesis in vitro. We also successfully reconstituted both ribosomal subunits (30S and 50S) and 70S ribosomes using a full set of recombinant ribosomal proteins by integrating our developed method with the previously developed fully recombinant-based integrated synthesis, assembly and translation. The approach described here makes a major contribution to the field of ribosome engineering and could be fundamental to the future studies of ribosome assembly processes.
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Affiliation(s)
- Ryo Aoyama
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka 565-0874, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
| | - Keiko Masuda
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka 565-0874, Japan
| | - Masaru Shimojo
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka 565-0874, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
| | | | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan.,Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, Shinjuku, Tokyo 162-8480, Japan
| | - Yoshihiro Shimizu
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka 565-0874, Japan
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Kurosaka S, Honda K, Okada M, Ikura Y, Ishihara Y, Takaura M, Ueda T, Deguchi T, Wang Y, Saeki W, Yanaoka T. Effects of the on-demand SMILE exercise on bone strength and salivary immunoglobulin A. J Sci Med Sport 2021. [DOI: 10.1016/j.jsams.2021.09.178] [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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Kuroki N, Abe D, Hasegawa K, Nagatomo R, Okochi M, Kato T, Aoyama T, Hirano H, Ohashi K, Takayama A, Hattori A, Kimata A, Hamabe Y, Suzuki K, Ueda T. Habitual exercise provides better prognosis for cardiac arrest with coronary artery disease. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Although regular physical activity has beneficial cardiovascular effects, exercise can trigger sudden cardiac arrest (SCA). Coronary artery disease (CAD) was identified as the most common cause of an exercise-related out-of-hospital cardiac arrest (OHCA). Regular exercise has been reported to reduce the risk of plaque rupture in animal studies and basic research. Therefore, we compared the coronary artery findings in CAD-OHCA patients with and without habitual exercise.
There have been few reports on whether regular exercise changes the prognosis in OHCA due to CAD (CAD-OHCA). We investigated the association between the better clinical outcome and the regular exercise in patients with CAD-OHCA.
Methods
This is a single-center retrospective analysis from 2006 to 2019. The consecutive 397 patients with OHCA due to myocardial ischemia underwent coronary angiography (CAG). After excluding 73 patients with vasospastic angina, the remaining 324 patients with CAD were enrolled in this study. We divided these patients into two groups according to whether they were habitually exercising (Exercise group: N=37) or not/unknown (Non-Exercise group: N=287).
Clinical outcome was a 30-day survival with minimal neurologic impairment represented by a Glasgow-Pittsburgh Cerebral Performance Categories Scale value 1 or 2.
Results
The patients in the Exercise Group were significantly younger (exercise vs. non-exercise, 57±12 vs. 64±12 years; P<0.01) than those in the non-exercise group. The Exercise group had a lower incidence of diabetes mellitus (22% vs. 42%; P=0.02) and a higher incidence of dyslipidemia (81% vs. 62%; P=0.02) than the non-exercise group. The time from collapse to cardiopulmonary resuscitation (1.4±4.0 vs. 3.0±4.8min) and from collapse to return of spontaneous circulation (11.9±10.0 vs. 28.0±25.3min) were shorter in Exercise group (all p<0.05). The ST-segment elevation was recorded on electrocardiography in fewer of the Exercise group (22% vs. 63%; P<0.01). The finding of culprit lesion in the coronary arteries on arrival resulted significant differences between the 2groups (good collateral and/or TIMI3 flow: 62% vs. 25%, the plaque rupture and/or thrombus: 22% vs. 73%) (all p<0.01) (Figure 1). Kaplan-Meier curve showed Exercise group has better neurological outcome at 30days compared than Non-Exercise (95% vs 51%; P<0.001, log-rank test) (Figure 2). Multivariable Cox proportional hazards models revealed that a habitual exercise was one of the predictors of a good neurological outcome (HR 0.21, 95% CI 0.05–0.92; P=0.039).
Conclusions
The patients with habitual exercise had less plaque rupture, less coronary thrombosis than non-exercise. The patients with regular exercise had better clinical outcomes than non-exercise after CAD-OHCA.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): Tokyo Metropolitan Goverment Figure 1. Findings of the culprit lesion in coronar arteriesFigure 2. Kaplan-Meier analysis
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Affiliation(s)
- N Kuroki
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - D Abe
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - K Hasegawa
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - R Nagatomo
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - M Okochi
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Kato
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Aoyama
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - H Hirano
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - K Ohashi
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - A Takayama
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - A Hattori
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - A Kimata
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - Y Hamabe
- Tokyo Metropolitan Bokutoh Hospital, Emergency and Intensive Care Center, Tokyo, Japan
| | - K Suzuki
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Ueda
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
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Sato H, Someya Y, Nishiyama M, Satoh W, Kumasaka K, Shindoh C, Ota H, Ueda T, Kawashima R, Miura M. CMR feature tracking cloud assess right ventricular functional reserve with pulmonary arterial hypertension. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeab090.119] [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
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): JSPS KAKENHI, Grant-in-Aid for Early-Career Scientists.
Background
Pulmonary arterial hypertension (PAH) remains a fatal disorder characterized by elevated pulmonary arterial pressure. Survival of the patients with PAH is determined from right ventricular (RV) function. CMR has become an attractive modality for following up and providing prognosis in such patients, and CMR feature tracking has been used as a newer useful parameter to assess RV function. However, it has not yet been determined whether CMR feature tracking can assess RV functional reserve in patients with PAH.
Purpose
We investigated whether CMR feature tracking can estimate RV functional reserve using a rat model with PAH.
Methods
Rats were received injections with monocrotaline (MCT-rats, n = 19) or solvent (Ctr-rats, n = 5). Four weeks after the injections, we performed CMR on 7-T MRI scanner and imaged retrospective ECG-gated cine MR (16 phases/beat). RV ejection fraction (RVEF) and RV strain were analyzed before and after addition of 0.5∼3 nmol endothelin-1 (ET-1). After the measurements, we dissected trabeculae (length = 1.45 ± 0.07 mm, width = 334 ± 27 µm, thickness = 114 ± 6 µm) from the RVs of rat hearts. Trabeculae were electrically stimulated with 2-s intervals at extracellular Ca2+ of 0.7 and 2.0 mmol/L (24°C). Force and maximum dF/dt (dF/dtmax) were then measured using a silicon strain gauge in the absence and presence of 0.1 µM ET-1.
Results
MCT-rats showed higher systolic RV pressure (RVP), lower RVEF, and lower RV global longitudinal strain (RVGLS) in CMR imaging and showed lower developed force and lower dF/dtmax in their trabeculae. Correlation between RVGLS and dF/dtmax was higher (r = 0.53, p < 0.05) than that between RVEF and dF/dtmax (r = 0.24). In 5 MCT-rats with preserved RVEF (>50%), RVGLS had already been reduced, suggesting that RVGLS is reduced earlier than RVEF. ET-1 increased developed force and dF/dtmax in trabeculae from MCT-rats (12.2 ± 5.7 to 17.4 ± 3.1 mN/mm2 and 0.08 ± 0.03 to 0.14 ± 0.06 mN/mm2/sec, respectively, n = 6), and ET-1 also increased RVP in MCT-rats and Ctr-rats (49.0 ± 19.3 to 59.7 ± 16.8 mmHg in MCT-rats, n = 6, 17.3 ± 7.5 to 20.4 ± 7.8 mmHg in Ctr-rats, n = 2). According to RV global circumferential strain (RVGCS) and RVEF, we could divide MCT-rats into three groups as follows: MCT-rats with reduced-RVGCS (> -20%)/preserved-RVEF (> 50%), MCT-rats with increased-RVGCS (< -30%)/preserved-RVEF and MCT-rats with reduced-RVGCS/reduced-RVEF. ET-1 reduced RVGCS in MCT-rats with reduced-RVGCS/preserved-RVEF, while ET-1 did not change RVGCS in MCT-rats with increased-RVGCS/preserved-RVEF. MCT-rats with reduced-RVGCS/reduced-RVEF died after injection of ET-1. In Ctr-rats, ET-1 did not change RVGCS and RVEF. These results suggest that RVGCS can be useful to assess RV functional reserve.
Conclusion
CMR feature tracking can estimate RV functional reserve earlier and more accurately than RVEF in rats with PAH. RV strain may become an important parameter to assess RV functional reserve in patients with PAH.
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Affiliation(s)
- H Sato
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - Y Someya
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - M Nishiyama
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - W Satoh
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - K Kumasaka
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - C Shindoh
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - H Ota
- Tohoku University Graduate School of Medicine, Department of Diagnostic Radiology, Sendai, Japan
| | - T Ueda
- Tohoku University Graduate School of Medicine, Department of Clinical Imaging, Sendai, Japan
| | - R Kawashima
- Tohoku University, Institute of Development, Aging and Cancer, Sendai, Japan
| | - M Miura
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
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Oiwa K, Fujita K, Lee S, Morishita T, Tsukasaki H, Negoro E, Hara T, Tsurumi H, Ueda T, Yamauchi T. Prognostic impact of six versus eight cycles of standard regimen in patients with diffuse large B-cell lymphoma: propensity score-matching analysis. ESMO Open 2021; 6:100210. [PMID: 34271313 PMCID: PMC8287142 DOI: 10.1016/j.esmoop.2021.100210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 02/07/2023] Open
Abstract
Background R-CHOP-21 has been the standard treatment for diffuse large B-cell lymphoma (DLBCL), but there is a paucity of evidence focusing on the number of cycles of regimens. Patients and methods We conducted a retrospective study to compare the effectiveness of six cycles of standard regimens versus eight cycles for overall survival (OS) in DLBCL patients using propensity score matching, in consideration of relative dose intensity (RDI). Results A total of 685 patients with newly diagnosed DLBCL were identified in three institutions from 2007 to 2017. Patients treated using six cycles of standard regimens were matched by propensity scores with those treated using eight cycles. A 1 : 1 propensity score matching yielded 138 patient pairs. Eight cycles did not significantly improve OS in the conventional Cox proportional hazards model (hazard ratio 0.849, 95% confidence interval 0.453-1.588, P = 0.608). Restricted cubic spline Cox models for OS confirmed that the effect of the number of cycles was not modified by total average RDI, the International Prognostic Index, and age. Occurrence of adverse events did not differ between six and eight cycles. Conclusion Even considering the impact of RDI, six cycles of the initial standard regimen for DLBCL is not inferior to eight cycles. The optimal number of cycles of standard regimens including R-CHOP-21 for newly diagnosed DLBCL has not been determined. This study was conducted to verify whether six cycles or eight cycles of standard regimen improved the prognosis of DLBCL. Propensity score matching and a Cox hazards model with restricted cubic spline were used in this study. No survival benefit of eight cycles compared with six cycles was seen, even taking into account RDI. Prognosis was no better with eight cycles of (R-)CHOP-21 or THP-COP-21 than with six cycles, after age and IPI modifications.
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Affiliation(s)
- K Oiwa
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan; Department of Hematology and Oncology, Nagoya City University, Aichi, Japan
| | - K Fujita
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan; Department of Hematology, Matsunami General Hospital, Gifu, Japan
| | - S Lee
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan; Department of Hematology, Matsunami General Hospital, Gifu, Japan.
| | - T Morishita
- Department of Healthcare Economics and Quality Management, Graduate School of Medicine, Kyoto University, Yoshida Konoe-cho, Kyoto, Japan
| | - H Tsukasaki
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan; Department of Hematology, Fukui Red Cross Hospital, Fukui, Japan
| | - E Negoro
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan
| | - T Hara
- Department of Hematology, Matsunami General Hospital, Gifu, Japan
| | - H Tsurumi
- Department of Hematology, Matsunami General Hospital, Gifu, Japan
| | - T Ueda
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan
| | - T Yamauchi
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan
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Ejiri M, Kawai H, Yasunaga M, Shirobe M, Ito K, Ueda T, Obuchi S. [Effective support based on length of participation for community-based activities led by older residents]. Nihon Koshu Eisei Zasshi 2021; 68:459-467. [PMID: 33896897 DOI: 10.11236/jph.20-108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Objectives Community-based activities led by older residents are important in preventing long-term care and enhancing social participation among older persons in Japan. Local governments and community nurses are required to support these activities. However, there is no knowledge about the issues of residents who participate in community-based activities, which is essential for the effective support of community-based activities. We aimed to examine the association between the length of participation and recognized issues among community-based activities.Methods Through the local governments in Tokyo, we recruited participants from community-based activity groups; 2,367 people from 155 activity groups from 40 municipalities responded. The presence or absence of 10 items of recognized issues, such as lack of management members and lack of teachers, were examined. The number of years of participation in the activity was divided into four groups: "less than 1 year," "more than 1 year and less than 2 years," "more than 2 years and less than 4 years," and "more than 4 years." Logistic regression analysis was conducted to examine the association between the length of participation and recognized issues.Results The number of analyzed respondents was 2,194 (14.5% were male and the average age was 76.9 years). Compared to "less than 1 year" group, the "more than 2 years and less than 4 year" group recognized "aging of group" (OR=1.92), "lack of management members" (OR=1.61), and "health condition of participants" (OR=1.47) as issues. In the "more than 4 years" group, "aging of group" (OR=3.24), "lack of management members" (OR=2.63), "lack of participants" (OR=2.12), "health condition of participants" (OR=1.95), "mannerism of activities" (OR=1.62), and "lack of place" (OR=1.48) were recognized as issues.Conclusion Issues recognized by participants in community-based activities differed depending on the number of years they had been participating in the activity. This suggests that it is necessary to provide appropriate support taking the length of participation into account. For example, the issue of the "health condition of participants" was recognized by participants who had been participating in the activity for approximately two years. Consequently, "lack of participants" may have occurred in participants who have been participating in the activity for four years. Therefore, promoting the health management of participants from the early phase of community-based activity would be effective in preventing dropout.
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Affiliation(s)
| | | | | | | | - Kumiko Ito
- Tokyo Metropolitan Institute of Gerontology
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Sano E, Kazaana A, Tadakuma H, Takei T, Yoshimura S, Hanashima Y, Ozawa Y, Yoshino A, Suzuki Y, Ueda T. Interleukin-6 sensitizes TNF-α and TRAIL/Apo2L dependent cell death through upregulation of death receptors in human cancer cells. Biochim Biophys Acta Mol Cell Res 2021; 1868:119037. [PMID: 33839168 DOI: 10.1016/j.bbamcr.2021.119037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 10/21/2022]
Abstract
Interleukin-6 (IL-6) enhanced TNF-α and TRAIL/Apo2L induced cell death in various human cancer cells derived from malignant glioma, melanoma, breast cancer and leukemia, although the effect was not detected with IL-6 alone. The effects of IL-6 using SKBR3 cells were associated with the generation of apoptotic cells as analyzed by fluorescence microscopy and flow cytometry. IL-6 activated p53 and upregulated TRAIL death receptors (DR-4 and DR-5) and stimulated the TNF-α and TRAIL dependent extrinsic apoptotic pathway without activation of the p53 mediated intrinsic apoptotic pathway. TNF-α and TRAIL induced cleavage of caspase-8 and caspase-3 was more enhanced by IL-6, although these caspases were not cleaved by IL-6 alone. The dead cell generation elicited by the combination with IL-6 was blocked by anti-human TRAIL R2/TNFRSF10B Fc chimera antibody which can neutralize the DR-5 mediated death signal. These findings indicate that IL-6 could contribute to the enhancement of TNF-α or TRAIL induced apoptosis through p53 dependent upregulation of DR-4 and DR-5. The data suggest that a favorable therapeutic interaction could occur between TNF-α or TRAIL and IL-6, and provide an experimental basis for rational clinical treatments in various cancers.
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Affiliation(s)
- Emiko Sano
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan.
| | - Akira Kazaana
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
| | - Hisashi Tadakuma
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
| | - Toshiaki Takei
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
| | - Sodai Yoshimura
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Yuya Hanashima
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Yoshinari Ozawa
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Atsuo Yoshino
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Yutaka Suzuki
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
| | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan; Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, Tokyo 162-8480, Japan
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38
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Nikolay R, Hilal T, Schmidt S, Qin B, Schwefel D, Vieira-Vieira CH, Mielke T, Bürger J, Loerke J, Amikura K, Flügel T, Ueda T, Selbach M, Deuerling E, Spahn CMT. Snapshots of native pre-50S ribosomes reveal a biogenesis factor network and evolutionary specialization. Mol Cell 2021; 81:1200-1215.e9. [PMID: 33639093 DOI: 10.1016/j.molcel.2021.02.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 11/11/2020] [Accepted: 02/02/2021] [Indexed: 01/13/2023]
Abstract
Ribosome biogenesis is a fundamental multi-step cellular process that culminates in the formation of ribosomal subunits, whose production and modification are regulated by numerous biogenesis factors. In this study, we analyze physiologic prokaryotic ribosome biogenesis by isolating bona fide pre-50S subunits from an Escherichia coli strain with the biogenesis factor ObgE, affinity tagged at its native gene locus. Our integrative structural approach reveals a network of interacting biogenesis factors consisting of YjgA, RluD, RsfS, and ObgE on the immature pre-50S subunit. In addition, our study provides mechanistic insight into how the GTPase ObgE, in concert with other biogenesis factors, facilitates the maturation of the 50S functional core and reveals both conserved and divergent evolutionary features of ribosome biogenesis between prokaryotes and eukaryotes.
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Affiliation(s)
- Rainer Nikolay
- Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
| | - Tarek Hilal
- Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Freie Universität Berlin, Research Centre for Electron Microscopy, Fabeckstr. 36a, 14195 Berlin, Germany
| | - Sabine Schmidt
- Molekulare Mikrobiologie, Universität Konstanz, Konstanz, Germany
| | - Bo Qin
- Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - David Schwefel
- Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Carlos H Vieira-Vieira
- Proteome Dynamics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Str. 10, 13125 Berlin, Germany; Faculty of Life Sciences, Humboldt Universität zu Berlin, Berlin, Germany
| | - Thorsten Mielke
- Microscopy and Cryo-Electron Microscopy Service Group, Max Planck Institute for Molecular Genetics, Ihnestr. 63-73, 14195 Berlin, Germany
| | - Jörg Bürger
- Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Microscopy and Cryo-Electron Microscopy Service Group, Max Planck Institute for Molecular Genetics, Ihnestr. 63-73, 14195 Berlin, Germany
| | - Justus Loerke
- Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Kazuaki Amikura
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, FSB-401, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
| | - Timo Flügel
- Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, FSB-401, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
| | - Matthias Selbach
- Proteome Dynamics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Str. 10, 13125 Berlin, Germany; Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Elke Deuerling
- Molekulare Mikrobiologie, Universität Konstanz, Konstanz, Germany
| | - Christian M T Spahn
- Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
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Lee M, Matsunaga N, Akabane S, Yasuda I, Ueda T, Takeuchi-Tomita N. Reconstitution of mammalian mitochondrial translation system capable of correct initiation and long polypeptide synthesis from leaderless mRNA. Nucleic Acids Res 2021; 49:371-382. [PMID: 33300043 PMCID: PMC7797035 DOI: 10.1093/nar/gkaa1165] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 12/31/2022] Open
Abstract
Mammalian mitochondria have their own dedicated protein synthesis system, which produces 13 essential subunits of the oxidative phosphorylation complexes. We have reconstituted an in vitro translation system from mammalian mitochondria, utilizing purified recombinant mitochondrial translation factors, 55S ribosomes from pig liver mitochondria, and a tRNA mixture from either Escherichia coli or yeast. The system is capable of translating leaderless mRNAs encoding model proteins (DHFR and nanoLuciferase) or some mtDNA-encoded proteins. We show that a leaderless mRNA, encoding nanoLuciferase, is faithfully initiated without the need for any auxiliary factors other than IF-2mt and IF-3mt. We found that the ribosome-dependent GTPase activities of both the translocase EF-G1mt and the recycling factor EF-G2mt are insensitive to fusidic acid (FA), the translation inhibitor that targets bacterial EF-G homologs, and consequently the system is resistant to FA. Moreover, we demonstrate that a polyproline sequence in the protein causes 55S mitochondrial ribosome stalling, yielding ribosome nascent chain complexes. Analyses of the effects of the Mg concentration on the polyproline-mediated ribosome stalling suggested the unique regulation of peptide elongation by the mitoribosome. This system will be useful for analyzing the mechanism of translation initiation, and the interactions between the nascent peptide chain and the mitochondrial ribosome.
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Affiliation(s)
- Muhoon Lee
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan
| | - Noriko Matsunaga
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan
| | - Shiori Akabane
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan.,Department of Life Science, Rikkyo University, Tokyo, 171-8501, Japan
| | - Ippei Yasuda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan
| | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan.,Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, Tokyo, Shinjuku 162-8480, Japan
| | - Nono Takeuchi-Tomita
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan
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40
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Sato H, Someya Y, Takahashi Y, Kumasaka K, Sato W, Nishiyama M, Matsumoto A, Morita N, Shindoh C, Ota H, Ueda T, Kawashima R, Miura M. Right ventricular longitudinal strain with CMR can more accurately estimate right ventricular functional reserve in rats with pulmonary arterial hypertension. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Right ventricular (RV) function is an important prognostic factor in patients with pulmonary arterial hypertension (PAH). Recently, CMR has become an attractive modality for follow up and providing prognosis in the patients, and strain has been used as a newer parameter to assess contractile properties of ventricle. It has not yet been established, however, whether RV strain with CMR can estimate RV functional reserve in the patients with PAH.
Purpose
We focused on CMR imaging of RV, investigating whether RV longitudinal strain can estimate RV functional reserve using a rat model with PAH.
Method
Rats were given a subcutaneous injection of 60 mg/kg monocrotaline (MCT-rats) or solvent (Ctr-rats). Four weeks after the injection, 25% of MCT-rats died due to RV failure. In the survivors of MCT- (n=19) and Ctr-rats (n=5), retrospective ECG-gated cine MR (16 phases/beat) was imaged with a 7T scanner. Subsequently, we measured RV pressure (RVP) via right internal jugular vein and dissected trabeculae (length = 1.45±0.07 mm, width = 334±27 μm, thickness = 114±6 μm) from RVs. We calculated weight ratio of RV free wall to left ventricle (LV) by RV/(LV+septum). Trabeculae were electrically stimulated with 2-s stimulus intervals, and force was measured using a silicon strain gauge (0.7 mM extracellular Ca2+, 24°C). To determine contractile properties of RV muscle, dF/dt was calculated. Using CMR imaging, we measured RV ejection fraction (RVEF) and RV longitudinal strain (RVLS). To modulate RVP, we intravenously injected 5 nmol endothelin-1 (ET-1) and again measured RVEF and RVLS.
Results
MCT-rats showed higher systolic RVP (62.5±16.6 vs. 25.9±1.86 mmHg, p<0.01) and higher weight ratio of RV (0.60±0.03 vs. 0.28±0.02, p<0.05). In CMR imaging, MCT-rats showed lower RVEF (36.1±11.2 vs. 64.8±8.4%, p<0.001) and lower RVLS (−18±9 vs. −30±1%, p<0.05). In trabeculae from RVs, MCT-rats showed lower developed force and lower dF/dt (p<0.01). Correlation between RVLS and dF/dt was higher (n=20, r=0.53, p<0.05) than that between RVEF and dF/dt (r=0.24). In addition, RVLS and dF/dt had already been decreased in 5 MCT-rats with relatively preserved RVEF (>50%), suggesting that RVLS decreases earlier than RVEF in MCT-rats. Ten minutes after the injection of ET-1, RVP was increased from 49.4±7.9 to 57.9±6.4 mmHg in MCT-rats (n=6). In MCT-rats with preserved RVEF and decreased RVLS, the increase in RVP chiefly decreased RVEF while it did not change RVLS and RVEF in Ctr-rats, meaning that RV functional reserve had been decreased in MCT-rats. In trabeculae, developed force and dF/dt were increased after the addition of 0.1 μM ET-1 in MCT- (n=11, p<0.01) and Ctr-rats (n=4, p<0.01).
Conclusion
These results suggest that in rats with PAH, RVLS obtained from CMR can estimate RV functional reserve earlier and more accurately than RVEF. Therefore, RV strain with CMR may become an important parameter to assess RV functional reserve in patients with PAH.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Grant-in-Aid for Young Scientists
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Affiliation(s)
- H Sato
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - Y Someya
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - Y Takahashi
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - K Kumasaka
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - W Sato
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - M Nishiyama
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - A Matsumoto
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - N Morita
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - C Shindoh
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
| | - H Ota
- Tohoku University Graduate School of Medicine, Department of Diagnostic Radiology, Sendai, Japan
| | - T Ueda
- Tohoku University Graduate School of Medicine, Department of Clinical Imaging, Sendai, Japan
| | - R Kawashima
- Tohoku University, Institute of Development, Aging and Cancer, Sendai, Japan
| | - M Miura
- Tohoku University Graduate School of Medicine, Department of Clinical physiology, Sendai, Japan
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Ogura Y, Ueda T, Nukazawa K, Hiroki H, Xie H, Arimizu Y, Hayashi T, Suzuki Y. The level of antimicrobial resistance of sewage isolates is higher than that of river isolates in different Escherichia coli lineages. Sci Rep 2020; 10:17880. [PMID: 33087784 PMCID: PMC7578040 DOI: 10.1038/s41598-020-75065-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/09/2020] [Indexed: 01/14/2023] Open
Abstract
The dissemination of antimicrobial-resistant bacteria in environmental water is an emerging concern in medical and industrial settings. Here, we analysed the antimicrobial resistance of Escherichia coli isolates from river water and sewage by the use of a combined experimental phenotypic and whole-genome-based genetic approach. Among the 283 tested strains, 52 were phenotypically resistant to one or more antimicrobial agents. The E. coli isolates from the river and sewage samples were phylogenetically indistinguishable, and the antimicrobial-resistant strains were dispersedly distributed in a whole-genome-based phylogenetic tree. The prevalence of antimicrobial-resistant strains as well as the number of antimicrobials to which they were resistant were higher in sewage samples than in river samples. Antimicrobial resistance genes were more frequently detected in strains from sewage samples than in those from river samples. We also found that 16 river isolates that were classified as Escherichia cryptic clade V were susceptible to all the antimicrobials tested and were negative for antimicrobial resistance genes. Our results suggest that E. coli strains may acquire antimicrobial resistance genes more frequently and/or antimicrobial-resistant E. coli strains may have higher rates of accumulation and positive selection in sewage than in rivers, irrespective of their phylogenetic distribution.
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Affiliation(s)
- Yoshitoshi Ogura
- Division of Microbiology, Department of Infectious Medicine, Kurume University School of Medicine, Kurume, Fukuoka, 830-0011, Japan. .,Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.
| | - Takuya Ueda
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Miyazaki, Miyazaki, 889-2192, Japan
| | - Kei Nukazawa
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Miyazaki, Miyazaki, 889-2192, Japan
| | - Hayate Hiroki
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Miyazaki, Miyazaki, 889-2192, Japan
| | - Hui Xie
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Miyazaki, Miyazaki, 889-2192, Japan
| | - Yoko Arimizu
- Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.,Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Tetsuya Hayashi
- Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Yoshihiro Suzuki
- Department of Civil and Environmental Engineering, Faculty of Engineering, University of Miyazaki, Miyazaki, 889-2192, Japan.
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Ochiai Y, Sumi K, Sano E, Yoshimura S, Yamamuro S, Ogino A, Ueda T, Suzuki Y, Nakayama T, Hara H, Katayama Y, Yoshino A. Antitumor effects of ribavirin in combination with TMZ and IFN-β in malignant glioma cells. Oncol Lett 2020; 20:178. [PMID: 32934745 PMCID: PMC7475644 DOI: 10.3892/ol.2020.12039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 04/02/2020] [Accepted: 07/14/2020] [Indexed: 12/24/2022] Open
Abstract
The prognosis of gioblastoma, the standard chemotherapy agent for which is temozolomide (TMZ), remains poor despite recent advances in multimodal treatments. Therefore, it is necessary to identify and develop novel therapeutics for this malignant disease. Ribavirin, an anti-viral agent which is one of the standard agents for treatment of chronic hepatitis C in combination with interferon (IFN), was recently revealed to have an antitumor potential towards various tumor cells, including malignant glioma cells. The aim of the present study was to examine the antitumor effect of ribavirin in combination with TMZ and IFN-β on glioma cells and to evaluate the possibility that such combinations might represent a novel candidate for glioblastoma therapy. The combination of ribavirin with TMZ and IFN-β displayed a significant cell growth inhibitory effect with a ribavirin dose-dependency, including a relatively low concentration of ribavirin, on not only TMZ-sensitive but also TMZ-resistant malignant glioma cells. The antitumor efficacy of such a combination further indicated a synergistic interaction when assessed by the Chou-Talalay method. Furthermore, flow cytometry analysis suggested that apoptosis induction was one of the possible biological processes underlying the synergistic antitumor effect of these triple combination treatments. Therefore, such combinations may be potentially important in the clinical setting for glioblastoma treatment, although further detailed studies, e.g. on the adverse effects, are required.
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Affiliation(s)
- Yushi Ochiai
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Koichiro Sumi
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Emiko Sano
- Department of Computational Biology and Medical Science, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Sodai Yoshimura
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Shun Yamamuro
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Akiyoshi Ogino
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Takuya Ueda
- Department of Computational Biology and Medical Science, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Yutaka Suzuki
- Department of Computational Biology and Medical Science, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Tomohiro Nakayama
- Division of Companion Diagnostics, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Hiroyuki Hara
- Division of Functional Morphology, Department of Functional Morphology, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Yoichi Katayama
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan.,Center for Brain and Health Sciences, Aomori University, Aomori 038-0003, Japan
| | - Atsuo Yoshino
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
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Yanagaki S, Ueda T, Masuda A, Ota H, Onaka Y, Kojima M, Hattori T, Mihara W, Takase K. Detection of the intimal tear in aortic dissection and ulcer-like projection in intramural hematoma: usefulness of full-phase retrospective ECG-gated CT angiography. Jpn J Radiol 2020; 38:1036-1045. [PMID: 32710132 PMCID: PMC7591413 DOI: 10.1007/s11604-020-01008-1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/15/2020] [Indexed: 01/16/2023]
Abstract
PURPOSE To compare the accuracy of non-electrocardiogram (ECG)-gated CT angiography (CTA), single-diastolic-phase ECG-gated CTA, and full-phase ECG-gated CTA in detecting the intimal tear (IT) in aortic dissection (AD) and ulcer-like projection (ULP) in intramural hematoma (IMH). MATERIALS AND METHODS A total of 81 consecutive patients with AD and IMH of the thoracic aorta were included in this single-center retrospective study. Non-ECG-gated CTA, single-diastolic-phase ECG-gated CTA, and full-phase ECG-gated CTA were used to detect the presence of the IT and ULP in thoracic aortic regions including the ascending aorta, aortic arch, and proximal and distal descending aorta. RESULTS The accuracy of detecting the IT and ULP was significantly greater using full-phase ECG-gated CTA (88% [95% CI: 100%, 75%]) than non-ECG-gated CTA (72% [95% CI: 90%, 54%], P = 0.001) and single-diastolic-phase ECG-gated CTA (76% [95% CI: 93%, 60%], P = 0.008). CONCLUSION Full-phase ECG-gated CTA is more accurate in detecting the IT in AD and ULP in IMH, than non-ECG-gated CTA and single-diastolic-phase ECG-gated CTA.
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Affiliation(s)
- Satoru Yanagaki
- Departments of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Seiryo 1-1, Sendai, 980-8574, Japan.
| | - Takuya Ueda
- Departments of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Seiryo 1-1, Sendai, 980-8574, Japan
| | - Atsuro Masuda
- Departments of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Seiryo 1-1, Sendai, 980-8574, Japan
| | - Hideki Ota
- Departments of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Seiryo 1-1, Sendai, 980-8574, Japan
| | - Yuta Onaka
- Departments of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Seiryo 1-1, Sendai, 980-8574, Japan
| | - Masatoshi Kojima
- Department of Radiology, Seikeikai Chiba Medical Center, 1-7-1, Minami-cho, Chuo-ku, Chiba, 260-0842, Japan
| | - Takashi Hattori
- Departments of Cardiovascular Surgery, Seikeikai Chiba Medical Center, 1-7-1, Minami-cho, Chuo-ku, Chiba, 260-0842, Japan
| | - Wahei Mihara
- Departments of Cardiovascular Surgery, Seikeikai Chiba Medical Center, 1-7-1, Minami-cho, Chuo-ku, Chiba, 260-0842, Japan
| | - Kei Takase
- Departments of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Seiryo 1-1, Sendai, 980-8574, Japan
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Hibi K, Amikura K, Sugiura N, Masuda K, Ohno S, Yokogawa T, Ueda T, Shimizu Y. Reconstituted cell-free protein synthesis using in vitro transcribed tRNAs. Commun Biol 2020; 3:350. [PMID: 32620935 PMCID: PMC7334211 DOI: 10.1038/s42003-020-1074-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/12/2020] [Indexed: 12/16/2022] Open
Abstract
Entire reconstitution of tRNAs for active protein production in a cell-free system brings flexibility into the genetic code engineering. It can also contribute to the field of cell-free synthetic biology, which aims to construct self-replicable artificial cells. Herein, we developed a system equipped only with in vitro transcribed tRNA (iVTtRNA) based on a reconstituted cell-free protein synthesis (PURE) system. The developed system, consisting of 21 iVTtRNAs without nucleotide modifications, is able to synthesize active proteins according to the redesigned genetic code. Manipulation of iVTtRNA composition in the system enabled genetic code rewriting. Introduction of modified nucleotides into specific iVTtRNAs demonstrated to be effective for both protein yield and decoding fidelity, where the production yield of DHFR reached about 40% of the reaction with native tRNA at 30°C. The developed system will prove useful for studying decoding processes, and may be employed in genetic code and protein engineering applications. Keita Hibi et al. develop a system to reconstitute cell-free protein synthesis using only in vitro transcribed tRNA (iVTtRNAs). They use 21 iVTtRNAs with and without nucleotide modifications to successfully synthesize functional proteins with about 40% production yield. Their system will be useful to study gene and protein engineering.
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Affiliation(s)
- Keita Hibi
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-8562, Japan
| | - Kazuaki Amikura
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-8562, Japan.,Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, 06520, USA
| | - Naoki Sugiura
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-8562, Japan
| | - Keiko Masuda
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka, 565-0874, Japan
| | - Satoshi Ohno
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, 501-1193, Japan
| | - Takashi Yokogawa
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, 501-1193, Japan
| | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-8562, Japan.,Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, Tokyo, Shinjuku, 162-8480, Japan
| | - Yoshihiro Shimizu
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka, 565-0874, Japan.
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Omori N, Ueda T, Mitsukawa N. CT-guided mapping in the removal of an impalpable, radiopaque foreign body in subcutaneous tissue: a case report. J Wound Care 2020; 29:424-426. [PMID: 32654606 DOI: 10.12968/jowc.2020.29.7.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Small fragments sometimes penetrate the soft tissue, and their depth and location can be difficult to determine accurately. This case study describes localisation of a thin, short wire that had penetrated the soft tissue of a 24-year-old man's back, using computed tomography (CT) with a reference grid made with an angiographic catheter. The axial non-contrast-enhanced CT scan with the grid placed over the affected body part surveyed by the CT scout view showed that the foreign body was buried in fascia 7cm from a puncture wound. Surgical removal of the foreign body was then performed without any sequelae. CT with the use of external references that do not cause metal artefacts is a simple and helpful procedure in localising radiopaque foreign bodies.
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Affiliation(s)
- Naoko Omori
- Department of Plastic and Reconstructive Surgery, Seikei-kai Chiba Medical Center, Chiba, Japan
| | - Takuya Ueda
- Department of Clinical Imaging, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Nobuyuki Mitsukawa
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
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47
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Tomida N, Muramatsu N, Niiyama M, Ahn JK, Chang WC, Chen JY, Chu ML, Daté S, Gogami T, Goto H, Hamano H, Hashimoto T, He QH, Hicks K, Hiraiwa T, Honda Y, Hotta T, Ikuno H, Inoue Y, Ishikawa T, Jaegle I, Jo JM, Kasamatsu Y, Katsuragawa H, Kido S, Kon Y, Maruyama T, Masumoto S, Matsumura Y, Miyabe M, Mizutani K, Nagahiro H, Nakamura T, Nakano T, Nam T, Ngan TNT, Nozawa Y, Ohashi Y, Ohnishi H, Ohta T, Ozawa K, Rangacharyulu C, Ryu SY, Sada Y, Sasagawa M, Shibukawa T, Shimizu H, Shirai R, Shiraishi K, Strokovsky EA, Sugaya Y, Sumihama M, Suzuki S, Tanaka S, Tokiyasu A, Tsuchikawa Y, Ueda T, Yamazaki H, Yamazaki R, Yanai Y, Yorita T, Yoshida C, Yosoi M. Search for η^{'} Bound Nuclei in the ^{12}C(γ,p) Reaction with Simultaneous Detection of Decay Products. Phys Rev Lett 2020; 124:202501. [PMID: 32501086 DOI: 10.1103/physrevlett.124.202501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/11/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
We measured missing mass spectrum of the ^{12}C(γ,p) reaction for the first time in coincidence with potential decay products from η^{'} bound nuclei. We tagged an (η+p) pair associated with the η^{'}N→ηN process in a nucleus. After applying kinematical selections to reduce backgrounds, no signal events were observed in the bound-state region. An upper limit of the signal cross section in the opening angle cosθ_{lab}^{ηp}<-0.9 was obtained to be 2.2 nb/sr at the 90% confidence level. It is compared with theoretical cross sections, whose normalization ambiguity is suppressed by measuring a quasifree η^{'} production rate. Our results indicate a small branching fraction of the η^{'}N→ηN process and/or a shallow η^{'}-nucleus potential.
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Affiliation(s)
- N Tomida
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - N Muramatsu
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - M Niiyama
- Department of Physics, Kyoto Sangyo University, Kyoto 603-8555, Japan
| | - J K Ahn
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - W C Chang
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - J Y Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - M L Chu
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - S Daté
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Japan Synchrotron Radiation Research Institute (SPring-8), Sayo, Hyogo 679-5198, Japan
| | - T Gogami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - H Goto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Hamano
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Hashimoto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Q H He
- Department of Nuclear Science & Engineering, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - K Hicks
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - T Hiraiwa
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - Y Honda
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Hotta
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Ikuno
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Y Inoue
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Ishikawa
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - I Jaegle
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J M Jo
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - Y Kasamatsu
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Katsuragawa
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S Kido
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - Y Kon
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Institute for Radiation Sciences, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Maruyama
- College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - S Masumoto
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - Y Matsumura
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Miyabe
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - K Mizutani
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Nagahiro
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Nara Women's University, Nara 630-8506, Japan
| | - T Nakamura
- Department of Education, Gifu University, Gifu 501-1193, Japan
| | - T Nakano
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Nam
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T N T Ngan
- Nuclear Physics Department, University of Science, Vietnam National University, Ho Chi Minh City 72711, Vietnam
| | - Y Nozawa
- Department of Radiology, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Y Ohashi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Ohnishi
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Ohta
- Department of Radiology, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - K Ozawa
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - C Rangacharyulu
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon SK S7N 5E2, Canada
| | - S Y Ryu
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Y Sada
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - M Sasagawa
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Shibukawa
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - H Shimizu
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - R Shirai
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - K Shiraishi
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - E A Strokovsky
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Laboratory of High Energy Physics, Joint Institute for Nuclear Research, Dubna, Moscow Region 142281, Russia
| | - Y Sugaya
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Sumihama
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Department of Education, Gifu University, Gifu 501-1193, Japan
| | - S Suzuki
- Japan Synchrotron Radiation Research Institute (SPring-8), Sayo, Hyogo 679-5198, Japan
| | - S Tanaka
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - A Tokiyasu
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - Y Tsuchikawa
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T Ueda
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - H Yamazaki
- Radiation Science Center, High Energy Accelerator Research Organization (KEK), Tokai, Ibaraki 319-1195, Japan
| | - R Yamazaki
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - Y Yanai
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Yorita
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - C Yoshida
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - M Yosoi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
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Oki T, Aokage K, Ueda T, Sugano M, Tane K, Miyoshi T, Kojima M, Fujii S, Kuwata T, Ochiai A, Funai K, Tsuboi M, Ishii G. Proportion of goblet cell is associated with malignant potential in invasive mucinous adenocarcinoma of the lung. Pathol Int 2020; 69:526-535. [PMID: 31559671 DOI: 10.1111/pin.12853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 08/06/2019] [Indexed: 12/14/2022]
Abstract
Invasive mucinous adenocarcinoma (IMA) is a newly classified variant of lung adenocarcinoma. The aim of this study was to examine the correlation between the proportion of goblet cells and the clinicopathological characteristics of IMA. Ninety-nine patients with stage I IMA were included in this study. We estimated prognostic impact of goblet cell proportion. We classified them into two groups: the cases with a high goblet cell proportion (HGP, goblet cell proportion ≥80%) and the cases with a low goblet cell proportion (LGP, goblet cell proportion ≤30%), and compared the expression levels of five cancer progression markers and the number of tumor-promoting stromal cells between the two groups. Univariate and multivariate analysis revealed that the goblet cell proportion was a prognostic factor for recurrence free survival (P < 0.01) and overall survival (P = 0.01). The expression levels of the cancer stem cell-related marker, ALDH-1, and proliferation-related marker, geminin were significantly higher in the LGP group than in the HGP group. CD204+ tumor-associated macrophages were significantly more in the LGP stroma than the HGP stroma. Our current study indicated that the proportion of goblet cells was correlated with the malignant potential in surgically resected IMA.
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Affiliation(s)
- Tomonari Oki
- Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan.,Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Japan.,Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Japan.,First Department of Surgery, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Keiju Aokage
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Takuya Ueda
- Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan.,Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Japan.,Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masato Sugano
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kenta Tane
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomohiro Miyoshi
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Motohiro Kojima
- Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
| | - Satoshi Fujii
- Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
| | - Takeshi Kuwata
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Japan
| | - Atsushi Ochiai
- Exploratory Oncology Research & Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kazuhito Funai
- First Department of Surgery, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Masahiro Tsuboi
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Genichiro Ishii
- Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
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49
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Shimojo M, Amikura K, Masuda K, Kanamori T, Ueda T, Shimizu Y. In vitro reconstitution of functional small ribosomal subunit assembly for comprehensive analysis of ribosomal elements in E. coli. Commun Biol 2020; 3:142. [PMID: 32214223 PMCID: PMC7096426 DOI: 10.1038/s42003-020-0874-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 10/19/2019] [Accepted: 03/03/2020] [Indexed: 11/25/2022] Open
Abstract
In vitro reconstitution is a powerful tool for investigating ribosome functions and biogenesis, as well as discovering new ribosomal features. In this study, we integrated all of the processes required for Escherichia coli small ribosomal subunit assembly. In our method, termed fully Recombinant-based integrated Synthesis, Assembly, and Translation (R-iSAT), assembly and evaluation of the small ribosomal subunits are coupled with ribosomal RNA (rRNA) synthesis in a reconstituted cell-free protein synthesis system. By changing the components of R-iSAT, including recombinant ribosomal protein composition, we coupled ribosomal assembly with ribosomal protein synthesis, enabling functional synthesis of ribosomal proteins and subsequent subunit assembly. In addition, we assembled and evaluated subunits with mutations in both rRNA and ribosomal proteins. The study demonstrated that our scheme provides new ways to comprehensively analyze any elements of the small ribosomal subunit, with the goal of improving our understanding of ribosomal biogenesis, function, and engineering. Shimojo et al. demonstrate the use of individually purified ribosomal proteins added into iSAT (integrated ribosomal synthesis, assembly, and translation) system to enable assembly of functional 30S subunits. They further show that while some 30S r-proteins must be full synthesized before transcription, others may be co-transcriptionally produced, to enable the assembly of 30S particles.
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Affiliation(s)
- Masaru Shimojo
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka, 565-0874, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-8562, Japan
| | - Kazuaki Amikura
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-8562, Japan.,Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, 06520, USA
| | - Keiko Masuda
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka, 565-0874, Japan
| | | | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-8562, Japan.,Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, Shinjuku, Tokyo, 162-8480, Japan
| | - Yoshihiro Shimizu
- Laboratory for Cell-Free Protein Synthesis, RIKEN Center for Biosystems Dynamics Research (BDR), Suita, Osaka, 565-0874, Japan.
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50
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Hanashima Y, Sano E, Sumi K, Ozawa Y, Yagi C, Tatsuoka J, Yoshimura S, Yamamuro S, Ueda T, Nakayama T, Hara H, Yoshino A. Antitumor effect of lenalidomide in malignant glioma cell lines. Oncol Rep 2020; 43:1580-1590. [PMID: 32323826 PMCID: PMC7108053 DOI: 10.3892/or.2020.7543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 01/29/2020] [Indexed: 02/05/2023] Open
Abstract
Glioblastoma is a malignant brain tumor exhibiting highly aggressive proliferation and invasion capacities. Despite treatment by aggressive surgical resection and adjuvant therapy including temozolomide and radiation therapy, patient prognosis remains poor. Lenalidomide, a derivative of thalidomide, is known to be an immunomodulatory agent that has been used to treat hematopoietic malignancies. There are numerous studies revealing an antitumor effect of lenalidomide in hematopoietic cells, but not in glioma cells. The present study aimed to demonstrate the antitumor effect of lenalidomide on malignant glioma cell lines. The growth inhibition of malignant glioma cells (A-172, AM-38, T98G, U-138MG, U-251MG, and YH-13) by lenalidomide was assessed using a Coulter counter. The mechanism of the antitumor effect of lenalidomide was examined employing a fluorescence-activated cell sorter, western blot analysis, and quantitative real-time reverse transcriptional polymerase chain reaction (RT-qPCR) in malignant glioma cell lines (A-172, AM-38). The results revealed that the number of malignant glioma cells was decreased in a concentration-dependent manner by lenalidomide. DNA flow cytometric analysis demonstrated an increase in the ratio of cells at the G0/G1 phase following lenalidomide treatment. Western blot analysis and RT-qPCR revealed that p53 activation and the expression of p21 were increased in glioma cells treated with lenalidomide. Western blot analysis revealed that cleavage of PARP did not occur; however, increased expression of Bax protein, cleavage of caspase-9 and cleavage of caspase-3 were confirmed. Analysis by FACS also supported the conclusion that little apoptosis induction occurred following lenalidomide treatment of malignant glioma cell lines. In conclusion, lenalidomide exerts an antitumor effect on glioma cells due to alterations in cell cycle distribution.
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Affiliation(s)
- Yuya Hanashima
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Emiko Sano
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277‑8562, Japan
| | - Koichiro Sumi
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Yoshinari Ozawa
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Chihiro Yagi
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Juri Tatsuoka
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Sodai Yoshimura
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Shun Yamamuro
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277‑8562, Japan
| | - Tomohiro Nakayama
- Division of Companion Diagnostics, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Hiroyuki Hara
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo 173‑8610, Japan
| | - Atsuo Yoshino
- Division of Neurosurgery, Department of Neurological Surgery, Nihon University School of Medicine, Tokyo 173‑8610, Japan
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