1
|
Oono F, Adachi R, Yaegashi A, Kishino M, Ogata R, Kinugawa A, Tsumura A, Suga M, Matsumoto M, Takaoka T, Kakutani Y, Murakami K, Sasaki S. Are popular books about diet and health written based on scientific evidence? A comparison of citations between the USA and Japan. Public Health Nutr 2023; 26:2815-2825. [PMID: 37955110 PMCID: PMC10755443 DOI: 10.1017/s1368980023002549] [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: 02/07/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 11/14/2023]
Abstract
OBJECTIVES To describe and compare the references cited in popular books about diet and health between the USA and Japan. DESIGN Books were selected based on their best-seller rankings in the diet and health category of online bookstores. We identified references throughout all pages of the books and examined the number of references, reference format (identifiable or not) and presence of specific types of references, such as systematic reviews of human research. We compared the characteristics of references between the two countries and examined related factors to citation. SETTING Cross-sectional study. PARTICIPANTS Books (n 100 in each country). RESULTS Among 100 books from each country, sixty-five US and sixty-six Japanese books had references. Forty-five US books cited more than 100 references, against only five Japanese books. The number of books that cited systematic reviews of human research differed between the USA (n 49) and Japan (n 9). Additionally, the number of books that provided identifiable information for all references was significantly higher in the USA (n 63) than in Japan (n 42). Books whose first authors have licences of medical doctors were more likely to cite references than those without in both countries. CONCLUSIONS Two-thirds of books about diet and health cited references in both the USA and Japan, but Japanese books cited fewer references and were less likely to cite systematic reviews and provide identifiable references than US books. Further research into the scientific reliability of information in books about diet and health is warranted.
Collapse
Affiliation(s)
- Fumi Oono
- Department of Social and Preventive Epidemiology, Division of Health Sciences and Nursing, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku Tokyo, 113-0033, Japan
| | - Riho Adachi
- Department of Social and Preventive Epidemiology, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Akinori Yaegashi
- Department of Health and Nutrition, Faculty of Human Science, Hokkaido Bunkyo University, Hokkaido, Japan
- Department of Public Health, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Madoka Kishino
- Department of Food and Nutritional Science, Graduate School of Applied Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Risa Ogata
- Department of Nutrition and Food Science, Faculty of Human Life and Environmental Science, Ochanomizu University, Tokyo, Japan
| | - Anna Kinugawa
- Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Miyagi, Japan
| | - Ayari Tsumura
- Department of Clinical Nutrition and Food Management, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Mizuki Suga
- Department of Social and Preventive Epidemiology, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Moe Matsumoto
- Department of Food and Nutritional Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo, Japan
| | - Tomoya Takaoka
- Division of Clinical Nutrition, Shinshu University Hospital, Nagano, Japan
- Medical Science Division, Department of Medical Science, Graduate School of Medicine, Science and Technology, Shinshu University, Nagano, Japan
| | - Yuya Kakutani
- Faculty of Health and Nutrition, Osaka Shoin Women’s University, Osaka, Japan
| | - Kentaro Murakami
- Department of Social and Preventive Epidemiology, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Satoshi Sasaki
- Department of Social and Preventive Epidemiology, Division of Health Sciences and Nursing, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku Tokyo, 113-0033, Japan
- Department of Social and Preventive Epidemiology, School of Public Health, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
2
|
Abouzahr F, Cesar JP, Crespo P, Gajda M, Hu Z, Klein K, Kuo AS, Majewski S, Mawlawi O, Morozov A, Ojha A, Poenisch F, Proga M, Sahoo N, Seco J, Takaoka T, Tavernier S, Titt U, Wang X, Zhu XR, Lang K. The first probe of a FLASH proton beam by PET. Phys Med Biol 2023; 68:235004. [PMID: 37918021 DOI: 10.1088/1361-6560/ad0901] [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: 08/17/2023] [Accepted: 11/02/2023] [Indexed: 11/04/2023]
Abstract
The recently observed FLASH effect related to high doses delivered with high rates has the potential to revolutionize radiation cancer therapy if promising results are confirmed and an underlying mechanism understood. Comprehensive measurements are essential to elucidate the phenomenon. We report the first-ever demonstration of measurements of successive in-spill and post-spill emissions of gammas arising from irradiations by a FLASH proton beam. A small positron emission tomography (PET) system was exposed in an ocular beam of the Proton Therapy Center at MD Anderson Cancer Center to view phantoms irradiated by 3.5 × 1010protons with a kinetic energy of 75.8 MeV delivered in 101.5 ms-long spills yielding a dose rate of 164 Gy s-1. Most in-spill events were due to prompt gammas. Reconstructed post-spill tomographic events, recorded for up to 20 min, yielded quantitative imaging and dosimetric information. These findings open a new and novel modality for imaging and monitoring of FLASH proton therapy exploiting in-spill prompt gamma imaging followed by post-spill PET imaging.
Collapse
Affiliation(s)
- F Abouzahr
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
| | - J P Cesar
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
| | - P Crespo
- Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- Departamento de Física, Universidade de Coimbra, 3004-516 Coimbra, Portugal
| | - M Gajda
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
| | - Z Hu
- Department of Radiation Physics, MD Anderson Cancer Center, University of Texas, Houston, TX 77030, United States of America
| | - K Klein
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
| | - A S Kuo
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
| | - S Majewski
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
- Biomedical Engineering, University of California Davis, CA 96616, United States of America
| | - O Mawlawi
- Department of Imaging Physics, MD Anderson Cancer Center, University of Texas, Houston, TX, 77054, United States of America
| | - A Morozov
- Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - A Ojha
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
| | - F Poenisch
- Proton Therapy Center, MD Anderson Cancer Center, University of Texas, Houston, TX 77054, United States of America
| | - M Proga
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
| | - N Sahoo
- Proton Therapy Center, MD Anderson Cancer Center, University of Texas, Houston, TX 77054, United States of America
| | - J Seco
- Div. of Biomed. Physics in Rad. Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Physics and Astronomy, University of Heidelberg, Heidelberg, Germany
| | - T Takaoka
- Particle Therapy Division, Hitachi America Ltd, Houston, TX 77054, United States of America
| | - S Tavernier
- PETsys Electronics, SA, 2740-257 Taguspark, Portugal
| | - U Titt
- Department of Radiation Physics, MD Anderson Cancer Center, University of Texas, Houston, TX 77030, United States of America
| | - X Wang
- Proton Therapy Center, MD Anderson Cancer Center, University of Texas, Houston, TX 77054, United States of America
| | - X R Zhu
- Proton Therapy Center, MD Anderson Cancer Center, University of Texas, Houston, TX 77054, United States of America
| | - K Lang
- Department of Physics, University of Texas at Austin, Austin, TX 78712, United States of America
| |
Collapse
|
3
|
Kita N, Tomita N, Takaoka T, Mekata Y, Okazaki D, Niwa M, Torii A, Takano S, Hiwatashi A. Risk Factors for Symptomatic Radiation Pneumonitis after Stereotactic Body Radiotherapy (SBRT) for Early-Stage Lung Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e30. [PMID: 37785097 DOI: 10.1016/j.ijrobp.2023.06.714] [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) To identify risk factors for symptomatic radiation pneumonitis (RP) after stereotactic body radiotherapy (SBRT) in patients with early-stage lung cancer. MATERIALS/METHODS We reviewed patients with clinical stage IA1-IIA non-small cell lung cancer treated by SBRT in our institution. The primary endpoint was grade ≥ 2 RP. To evaluate the relationship between clinical risk factors and grade ≥ 2 RP, the Gray test was used for univariate analysis and the Fine-Gray model for multivariate analysis. Dose parameters were univariate analyzed using the Fine-Gray model. Optimal thresholds for dose parameters were tested using receiver operating characteristic (ROC) curves. RESULTS Among a total of 244 patients analyzed. The median age of patients was 77 years. The median follow-up period was 48 months. The 4-year cumulative incidence of grade ≥ 2 RP was 15.3% for all patients. In univariate analysis, tumor size (p = 0.01), central tumor (p < 0.001), interstitial pneumonia (p = 0.002), biological effective dose (BED, α/β ratio of 10 Gy) (p = 0.017), lung volume (%) receiving at least 8 Gy (V8) (p = 0.012), V10 (p = 0.011), V20 (p = 0.022) and mean lung dose (MLD) (p = 0.014) were significantly associated with the risk of grade ≥ 2 RP. In multivariate analysis, central tumor (hazard ratio [HR], 3.77; 95% confidence interval [CI], 1.88-7.55; p < 0.001) and interstitial pneumonia (HR, 4.88; 95% CI, 1.77-13.43; p = 0.002) were significantly associated with the risk of grade ≥ 2 RP. ROC curve analysis showed that the optimal diagnostic thresholds for lung V8, V10, V20, and MLD were 19.5% (the area under the curve [AUC]-0.629), 16.7% (AUC-0.629), 7.9% (AUC-0.621), and 5.2 Gy (AUC-0.623). The incidence of RP2 was found to be significantly high for values higher than the ROC threshold. The 4-year cumulative incidence of grade ≥ 2 RP in the V10 ≤ 16.7% vs V10 > 16.7% groups were 10% vs. 27% (p = 0.0013). CONCLUSION Central tumor and interstitial pneumonia were significant risk factors for RP2 after SBRT. We recommend that lung V10 be kept below 16.7%.
Collapse
Affiliation(s)
- N Kita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - N Tomita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Takaoka
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Y Mekata
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - D Okazaki
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Niwa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - A Torii
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - S Takano
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - A Hiwatashi
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| |
Collapse
|
4
|
Inui S, Tomita N, Takaoka T, Ueda Y, Ohira S, Tsuchiya T, Miyazaki M, Nishio T, Koizumi M, Konishi K. Dosimetric Comparison of Automated Non-Coplanar Volumetric-Modulated Arc Therapy and Intensity-Modulated Proton Therapy in Angiosarcoma of the Scalp. Int J Radiat Oncol Biol Phys 2023; 117:e675. [PMID: 37785989 DOI: 10.1016/j.ijrobp.2023.06.2128] [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) Angiosarcoma of the scalp (AS) is a rare tumor and has often been treated by total scalp irradiation (TSI). TSI is a challenging technique because of the target close to the organs at risks (OARs), located in the skin surface, and helmet-shape of the target. We performed the dosimetric comparison of automated non-coplanar volumetric-modulated arc therapy (HA) and intensity-modulated proton therapy (IMPT) in TSI for AS. MATERIALS/METHODS A planning study was performed on 20 patients with AS. The clinical target volume (CTV) 1 and CTV2 were defined as gross tumor volume with margin and entire scalp, respectively. For HA, planning target volume (PTV) 1 and PTV2 were defined as CTV1 and CTV2 with 5-mm margins, respectively. For IMPT, robust optimization was utilized which accounted for a 5-mm setup and a 3.5% range uncertainty and dose was prescribed to CTV1 robust and CTV2 robust. The prescription doses were 70 Gy and 56 Gy in 35 fractions to PTV1 (CTV1 robust) and PTV2 (CTV2 robust), respectively, using the simultaneous integrated boost technique. The HA plan was performed using a 6-MV photon beam machine and a 1-cm thick virtual bolus. The HA plan included three half non-coplanar and one full coplanar arc fields. The HA plan used collimator angles of 15°, 60°, 15°, and 120° in the beam with couch rotations of 0°, 45°, 90°, and 315°, respectively. The IMPT plan was performed using a compact proton beam machine dedicated to pencil beam scanning. The IMPT plan used gantry angles of 70°, 150°, 70°, 150°, and 30° in the beam with couch rotations of 0°, 0°, 180°, 180°, and 270°, respectively. The IMPT plan was optimized assuming a relative biological effectiveness of 1.1. The dose distribution and dosimetric parameters for each plan were evaluated. RESULTS All plans met the goals within the acceptable range in target volume coverage, conformity, and homogeneity. Table shows the dosimetric parameters of OARs in HA and IMPT plans. The doses receiving 0.1 cc of the volume for hippocampus, optic passway, eye, and lens in the IMPT plan were significantly lower than those in the HA plan. The IMPT plan showed a significant reduction in the percentage of brain volume receiving at least 5 Gy (V5 Gy) compared to the HA plan, while the HA plan showed a significant reduction of V10 Gy - V60 Gy and mean brain dose compared to the IMPT plan. The HA plan provided a shorter beam-on time (184 ± 9 s) than did the IMPT plan (446 ± 49 s). CONCLUSION The HA and IMPT plans demonstrated different strengths with respect to OARs sparing.
Collapse
Affiliation(s)
- S Inui
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan; Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - N Tomita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Takaoka
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Y Ueda
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - S Ohira
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - T Tsuchiya
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Miyazaki
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - T Nishio
- Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - M Koizumi
- Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - K Konishi
- Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan
| |
Collapse
|
5
|
Takano S, Tomita N, Niwa M, Torii A, Takaoka T, Okazaki D, Kita N, Uchiyama K, Imai M, Ayakawa S, Iida M, Tsuzuki Y, Otsuka S, Manabe Y, Nomura K, Ogawa Y, Miyakawa A, Miyamoto A, Yasui T, Hiwatashi A. Effects of Radiation Doses on Clinical Recurrence in Patients with Biochemically Recurrent Prostate Cancer after Prostatectomy. Int J Radiat Oncol Biol Phys 2023; 117:e444. [PMID: 37785436 DOI: 10.1016/j.ijrobp.2023.06.1623] [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) Salvage radiotherapy (SRT) to the prostate bed is the only curative treatment for patients with biochemical recurrence (BCR) after radical prostatectomy (RP). Although several systematic reviews indicated that a dose escalation in the range of 60-70 Gy improved biochemical control, the effects of radiation doses on clinical relapse after SRT remain unclear. Our aim was to investigate the relationship between radiation doses and clinical relapse-free survival (cRFS) after SRT. MATERIALS/METHODS We identified 295 eligible patients receiving SRT for biochemically recurrent prostate cancer after RP between 2005 and 2018 at 15 institutions. Sixteen patients (5%) received short-term (< 6 months) androgen deprivation therapy (ADT) following RP and/or concurrently with SRT. SRT was delivered to the prostate and seminal vesicle bed using photon beams at a median (range) dose of 66 Gy (61-85) in 1.8-3.0 Gy fractions. The primary outcome was cRFS. Clinical relapse was identified on radiological imaging and/or biopsy and included local recurrence, lymph node metastasis, and distant metastasis. In all analyses, doses were recalculated as an equivalent dose in 2-Gy fractions (EQD2) with α/β = 1.5 Gy. Clinical RFS between the EQD2 ≥ 66 Gy (n = 229) and EQD2 < 66 Gy (n = 66) groups were compared using the Log-rank test, followed by univariate and multivariate Cox regression analyses and a subgroup analysis. RESULTS The median follow-up duration was 73 months. Among patients with BCR (n = 119), 79 of 96 (82%) in the EQD2 ≥ 66 Gy group and 21 of 23 (91%) in the EQD2 < 66 Gy group received second salvage ADT (p = 0.36). Among all patients (n = 295), clinical relapse was identified in 22 (7%) patients after SRT. Six-year biochemical relapse-free survival (bRFS), cRFS, cancer-specific survival (CSS), and overall survival (OS) rates were 58%, 93%, 98%, and 94%, respectively. Six-year cRFS rates were 94% (95% confidence interval [CI], 90-97) in the EQD2 ≥ 66 Gy group and 87% (95% CI, 75-93) in the EQD2 < 66 Gy group (p = 0.020). The multivariate analysis revealed that EQD2 < 66 Gy, Gleason score ≥ 8, seminal vesicle involvement, and PSA at BCR ≥ 0.5 ng/ml correlated with clinical relapse (p = 0.0016, 0.014, 0.011, and 0.027, respectively). The subgroup analysis showed the consistent benefit of EQD2 ≥ 66 Gy in patients across most subgroups including PSA at BCR after RP, extracapsular extension, and age at SRT. CONCLUSION This large multi-institutional observational study demonstrated that a higher SRT dose (EQD2 ≥ 66 Gy) resulted in superior cRFS. The present result supports the dose recommendations in the 2023 National Comprehensive Cancer Network guidelines (64-72 Gy) even in terms of clinical relapse. Prospective trial is warranted to investigate an upper threshold for optimal SRT dose.
Collapse
Affiliation(s)
- S Takano
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - N Tomita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Niwa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - A Torii
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Takaoka
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - D Okazaki
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - N Kita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - K Uchiyama
- Department of Radiology, Kariya-Toyota general hospital, Nagoya, Japan
| | - M Imai
- Department of Radiology, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan
| | - S Ayakawa
- Department of Radiology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan
| | - M Iida
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan; Department of Radiation Oncology, Suzuka General Hospital, Suzuka, Japan
| | - Y Tsuzuki
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - S Otsuka
- Department of Radiology, Okazaki City Hospital, Okazaki, Japan
| | - Y Manabe
- Department of Radiation Oncology, Nanbu Tokushukai Hospital, Okinawa, Japan
| | - K Nomura
- Department of Radiotherapy, Nagoya City West Medical Center, Nagoya, Japan
| | - Y Ogawa
- Department of Radiation Oncology, Kasugai Municipal Hospital, Kasugai, Japan
| | - A Miyakawa
- Department of Radiation Oncology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - A Miyamoto
- Department of Radiation Oncology, Hokuto Hospital, Obihiro, Japan
| | - T Yasui
- Department of Urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - A Hiwatashi
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| |
Collapse
|
6
|
Murai T, Iida M, Yamada Y, Kondo T, Takaoka T, Tomita N, Ishikura S, Shibamoto Y. Stereotactic Radiotherapy For Brain Metastases Using Tomotherapy: 10-Fraction Protocol Reduces Toxicity While Maintaining Efficacy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
7
|
Asano T, Ono M, Saito A, Kanie T, Takaoka T, Komiyama N. Twenty-year trends in clinical outcome of randomized controlled trial for coronary intervention: systematic review and meta-regression analysis of 46 randomized controlled trials. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1473] [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
Aim
The technology of percutaneous coronary intervention (PCI) has been developed after the advent of coronary stent. However, the impact of the technological development on clinical outcomes is still unclear, whereas a remarkable improvement of clinical outcomes after PCI has not been observed in the trials comparing to medical therapy or coronary bypass graft. The current analysis aims to investigate trends in clinical outcomes after PCI after the emargence of coronary stent, using the randomized controlled trials (RCTs) comparing coronary stents.
Methods and results
We performed a systematic review of RCTs investigating coronary stents in non-specific population (excluding the trials particularly enrolling diabetic or myocardial infarction etc.) conducted between 1996 and 2015 (publication between 1997 and 2019) with independent clinical event adjudication. The random-effect meta-regression analysis including 90 arms with 94,831 patients in 46 RCTs was performed investigating the 20-year trends in clinical outcomes such as death, cardiac death, myocardial infarction, target lesion revascularization (TLR) and stent thrombosis at one and five years after the index procedure. The sensitivity analysis was performed by limiting to 20 all comer trials. In the meta-regression analysis, we did not observe significant change in the incidences of cardiac death and myocardial infarction after PCI over 20 years (P values for cardiac death: 0.666 at one year, 0.256 at five years and P values for myocardial infarction: 0.121 at one year, 0.376 at five years; R2 for cardiac death: <0.01 at one year and five years and R2 for myocardial infarction: <0.01 at one year and five years), whereas the incidences of clinically indicated TLR (P value <0.001, R2 = 0.40 at one year, P value = 0.002, R2 = 0.22 at five years) and stent thrombosis were decreased steeply in the first decade and slightly in the second decade (P value = 0.040, R2 = 0.09 at one year; P value = 0.017, R2 = 0.17 at five year). The sencitivity analysis limiting all-comer population revealed the consistent results.
Conclusion
The development of PCI had an impact on the 20-year trends in TLR and ST, despite there were no trends in the cardiac death and myocardial infarction.
Trends in the incidence of the outcomes
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- T Asano
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - M Ono
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - A Saito
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - T Kanie
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - T Takaoka
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - N Komiyama
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| |
Collapse
|
8
|
Nagai A, Shibamoto Y, Nomura K, Takaoka T, Sugie C, Wang Z, Manabe Y, Ishikura S. Multicenter Retrospective Observational Research on the Outcome of Radical Radiation Therapy for Prostate Cancer with Metastases. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1846] [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: 11/16/2022]
|
9
|
Hashizume C, Shibamoto Y, Tsugawa T, Otsuka S, Hayashi A, Takaoka T. Clinical Results of Stereotactic Body Radiation Therapy (SBRT) for Stage IB (T2aN0M0) Non-Small Cell Lung Cancer (NSCLC). Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Miyakawa A, Takaoka T, Manabe Y, Iwabuchi M, Takemoto S, Murai T, Sugie C, Matsuo M, Yanagi T, Baba F, Iwata H, Ogino H, Otsuka S, Hashizume C, Ayakawa S, Shibamoto Y. Stereotactic Body Radiation Therapy for Stage I Non-Small Cell Lung Cancer Using Different Doses Depending on Tumor Size: Mature Results of the First Study and Middle-Term Results of the Second Study Employing Escalated Doses. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
11
|
Ogawa Y, Shibamoto Y, Kosaki K, Hashizume C, Baba F, Takaoka T, Miyakawa A, Murai T, Yanagi T, Hattori Y, Ogino H. Safety and Efficacy of Repeat Stereotactic Body Radiation Therapy (SBRT) for Local Recurrence of Non-Small Cell Lung Cancer (NSCLC) and Lung Metastasis. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
12
|
Kondo T, Shibamoto Y, Hayashi A, Takaoka T, Murai T, Miyakawa A, Sugie C, Yanagi T, Matsuo M. Definitive Concurrent Chemotherapy and High Dose (60-70Gy) Radiation Therapy for Esophageal Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.882] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
13
|
Yoshida H, Nakagima Y, Kinnami M, Tsubouchi K, Takaoka T, Sadamatsu S. Relationship of pelvic angle and hip joint range of motion with factors that influence duchenne phenomenon after total hip arthroplasty. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
14
|
Hayashi A, Sugie C, Yoshihiko M, Takaoka T, Nagasawa M, Takama N, Iwabuchi M, Takenaka R, Yanagi T, Shibamoto Y. Study on the Optimal Field Width in Helical Tomotherapy With the New Dynamic Jaws Technology for Small Metastatic Brain Tumors. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1032] [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: 11/16/2022]
|
15
|
Sugie C, Manabe Y, Hayashi A, Murai T, Takaoka T, Hattori Y, Takenaka R, Shibamoto Y. Efficacy of the Dynamic Jaw Mode in Helical Tomotherapy With Static Ports for Breast Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
16
|
Panthee N, Murakami A, Ando M, Takaoka T, Ono M. Fontan Failure and Thrombosis of Total Cavo-Pulmonary Connection Conduit. JNMA J Nepal Med Assoc 2014; 52:834-836. [PMID: 26905715] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
The immediate postoperative period of Fontan operation is frequently complicated by hemodynamic instability, sometimes requiring fenestration of the conduit. Thrombosis of total cavo-pulmonary connection conduit warrants early intervention to prevent systemic and pulmonary embolism. We report a case of Fontan failure requiring fenestration; which was further complicated by thrombosis of total cavo-pulmonary connection conduit and managed with anticoagulants.
Collapse
Affiliation(s)
- N Panthee
- Department of Cardiac Surgery, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - A Murakami
- Department of Cardiac Surgery, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - M Ando
- Department of Cardiac Surgery, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - T Takaoka
- Department of Cardiac Surgery, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - M Ono
- Department of Cardiac Surgery, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| |
Collapse
|
17
|
Hattori Y, Shibamoto Y, Takaoka T, Hayashi A, Manabe Y, Iwata H, Hashizume C, Matsui T, Mimura M. EP-1434: Comparison of the efficacy of particle therapy and photon therapy in the same patients. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31552-8] [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: 11/16/2022]
|
18
|
Muneyuki T, Suwa K, Oshida H, Takaoka T, Kutsuma A, Yoshida T, Saito M, Hori Y, Kannno Y, Kanda E, Kakei M, Momomura SI, Nakajima K. Design of the Saitama Cardiometabolic Disease and Organ Impairment Study (SCDOIS): A Multidisciplinary Observational Epidemiological Study. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojemd.2013.32022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
19
|
Okita Y, Nakamura H, Takahashi I, Takaoka T, Kouda K, Kimura M, Kobayashi T, Sugiura T. P24-10 On emotional effects of odors of squeezed organic kale leaf based on EEGs and heart rate variability. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61007-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
20
|
Takaoka T, Komeda T. Estimation of friction of a single chemisorbed molecule on a surface using incident atoms. Phys Rev Lett 2008; 100:046104. [PMID: 18352307 DOI: 10.1103/physrevlett.100.046104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Indexed: 05/26/2023]
Abstract
Friction of a single molecule chemisorbed on a surface is a very fundamental property related to the dynamics of the diffusion of the molecule. We used a newly developed method, in which energy-controlled rare gas atoms collide with CO molecules on a stepped surface to displace CO molecules from initial terrace sites to final step sites. The friction coefficient of CO molecules on the surface was determined directly by comparing the experimentally measured increase in the number of CO molecules at step sites with classical molecular dynamics simulation results.
Collapse
Affiliation(s)
- T Takaoka
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
| | | |
Collapse
|
21
|
Takaoka T, Inamura M, Yanagimachi S, Kusunoki I, Komeda T. Ammonia adsorption on and diffusion into thin ice films grown on Pt(111). J Chem Phys 2004; 121:4331-8. [PMID: 15332983 DOI: 10.1063/1.1775781] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ammonia adsorption on and diffusion into thin ice films grown on a Pt(111) surface were studied using Fourier transform infrared spectroscopy (FTIR) and thermal desorption spectroscopy. After exposing the crystalline ice film to ammonia molecules at 45 K (ammonia/ice film), we have detected an intriguing feature at 1470 cm(-1) in the FTIR spectra, which is derived from the adsorption of ammonia on the ice with a characteristic structure which appears in thin film range. The peak intensity of this feature decreases gradually as the thickness of the substrate ice increases. In addition, we have detected a feature at 1260 cm(-1) which appears after annealing the ammonia/ice film. The feature corresponds to the ammonia molecules which reach the ice/Pt(111) interface through the ice film. Intriguingly, the intensity of this feature decreases with the ice thickness and there is a linear relation of the peak intensity of the features at 1470 and 1260 cm(-1). We propose a model in which the solubility of the ammonia molecules is much higher for the thin ice film than that for the ideal ice.
Collapse
Affiliation(s)
- T Takaoka
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
| | | | | | | | | |
Collapse
|
22
|
Maeda K, Murakami A, Takaoka T, Takamoto S, Sano K, Makuuchi M. Usefulness of intraoperative color doppler ultrasonography in decision making regarding conversion of an accessory hepatic vein after a Fontan-type operation. Pediatr Cardiol 2004; 25:414-6. [PMID: 15493069 DOI: 10.1007/s00246-003-0443-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
An accessory hepatic vein (AHV) after a Fontan-type operation will result in progressive desaturation if left intact. We report a case in which intraoperative color Doppler ultrasonography revealed the absence of AHV flow and reversed portal vein flow when the AHV was clamped, suggesting that simple ligation of the AHV would lead to liver dysfunction in the area affected. Based on the results of the ultrasonography evaluations, diversion of the AHV into the pulmonary circulation was performed without cardiopulmonary bypass, and the clinical outcome has been favorable.
Collapse
Affiliation(s)
- K Maeda
- Department of Cardiothoracic Surgery, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | | | | | | | | | | |
Collapse
|
23
|
Sekitani T, Takaoka T, Fujisawa M, Nishijima M. Interaction of ethylene with the hydrogen-preadsorbed palladium (110) surface: hydrogenation and hydrogen-deuterium-exchange reactions. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100200a048] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
|
25
|
Takaoka T, Matsukawa Y, Tomita Y, Kitamura N, Yamazaki T, Takeuchi J, Nishinarita S, Sawada U, Horie T. Development of erythroleukaemia after myelodysplastic syndrome in a patient with Wegener's granulomatosis. Ann Rheum Dis 2001; 60:899-900. [PMID: 11534507 PMCID: PMC1753823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
|
26
|
Abstract
OBJECTIVES This study investigated the potential plaque adhesion properties of various light-cured fluoride-releasing restorative materials by measuring the amount of adhering radiolabeled bacteria and glucan. METHODS Three resin-modified glass ionomer cements (RMGI) and two polyacid-modified resin composites (compomer) were used in this study. As a control, one light-cured resin composite was added. Disk-shaped specimens were made following the manufacturers' recommendations and the respective surfaces were finished with a 600-grit abrasive paper. Streptococcus sobrinus B13 was selected as a cariogenic bacterial strain. The amount of bacteria and glucan adhered to these specimens were measured after 3, 8 and 24h incubations with radiolabeled cariogenic bacteria and sucrose. RESULTS After 3 and 8h incubations, the amount of adhered bacteria and glucan was small and there were no significant differences among the restorative materials except in the resin composite. Although after 24h incubation the amounts of adhered bacteria and glucan, significantly increased on the RMGIs and compomers, these were still significantly less than the resin composite except one compomer. Although at 3h no good correlation was found between the contact angles and the amount of bacteria and glucans, the correlation coefficients were high at 8 or 24h. In addition, the coefficients for bacteria were always higher than those for glucan irrespective of the incubation times. CONCLUSIONS After 24h resin-modified glass ionomer cements and compomers showed significantly smaller amounts of adhered bacteria and glucans compared to resin composite with an exception of glucan adherence on one compomer.
Collapse
Affiliation(s)
- K Kawai
- Department of Conservative Dentistry, Osaka University Faculty of Dentistry, 1-8 Yamadaoka, Suita, 565-0871, Osaka, Japan.
| | | |
Collapse
|
27
|
Shimizu I, Omoya T, Takaoka T, Wada S, Wada H, Taoka M, Hayashi H, Hayashi S, Honda H, Sano N, Ito S. Serum amino-terminal propeptide of type III procollagen and 7S domain of type IV collagen correlate with hepatic iron concentration in patients with chronic hepatitis C following alpha-interferon therapy. J Gastroenterol Hepatol 2001; 16:196-201. [PMID: 11207901 DOI: 10.1046/j.1440-1746.2001.02402.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND It has been reported that chronic infection with hepatitis C virus is associated with excess iron deposits in the liver of subjects who are neither alcoholics nor recipients of blood transfusions. However, little is known about the relationship between hepatic iron concentration (HIC) and the serum levels of hepatic fibrogenesis markers, which were caused by interferon therapy for chronic hepatitis C. Therefore, changes in the serum amino-terminal propeptide of type III procollagen (P-III-P) and the 7S domain of type IV collagen (7S-IV) in 16 patients treated with alpha-interferon (IFN-alpha) were studied, and their HIC and histological assessment evaluated. Hepatic iron concentrations were measured by using liver biopsy specimens obtained before and 6 months after the cessation of treatment. METHODS AND RESULTS Eight subjects (50%) who had normal alanine transaminase levels at 6 months after therapy showed significantly lowered HIC, and attenuated hepatic iron staining with decreased serum levels of P-III-P and 7S-IV compared to the remaining subjects. The HIC was significantly correlated with the serum levels of P-III-P and 7S-IV in all subjects. CONCLUSIONS These findings suggest that IFN-alpha treatment may decrease stimuli for fibrogenesis, at least in part, by reducing the hepatic iron deposition in patients with chronic hepatitis C.
Collapse
Affiliation(s)
- I Shimizu
- Second Department of Internal Medicine, Tokushima University School of Medicine, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Losteinkit C, Uchiyama K, Ochi S, Takaoka T, Nagahisa K, Shioya S. Characterization of Bacteriocin N15 Produced by Enterococcus faecium N15 and Cloning of the Related Genes. J Biosci Bioeng 2001; 91:390-5. [PMID: 16233010 DOI: 10.1263/jbb.91.390] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2000] [Accepted: 01/29/2001] [Indexed: 11/17/2022]
Abstract
Enterococcus faecium N15 was isolated from nuka (Japanese rice-bran paste), which is utilized as starter in the fermenting of vegetables, and was found to produce a bacteriocin that exhibited a broad spectrum of activity, including activity against Listeria monocytogenes and Bacillus circulans JCM2504. The bacteriocin was sensitive to proteases (alpha-chymotrypsin, proteinase K, trypsin, and pepsin) and alpha-amylase, but it was resistant to lipase. The bacteriocin was resistant to heat treatment at 100 degrees C for 2 h, but its activity was completely lost after autoclaving at 121 degrees C for 15 min. It was active over a wide pH range from 2.0 to 10.0. The bacteriocin showed bactericidal activity against Lactobacillus sake JCM1157 at a concentration of 40 AU/ml. Its molecular weight was estimated by SDS-PAGE to be about 3-5 kDa. PCR primers were designed based on the conserved amino acid sequences of class IIa bacteriocins. A 3-kb DNA fragment was amplified and three open reading frames (ORFs) were found. The first encodes a probable immunity protein of 103 amino acid residues and shows complete homology with the putative immunity protein of E. faecium DPC1146. The second and third ORFs respectively encode a probable transposase gene and an inducing factor. The upstream region of the immunity gene, in which the bacteriocin structural gene is located, was amplified. A homology search revealed that the bacteriocin produced by E. faecium N15 exhibits complete identity to enterocin A, a bacteriocin produced by E. faecium DPC1146. PCR using the primers designed in this study is a rapid and sufficient method of screening for bacteriocin-producing strains.
Collapse
Affiliation(s)
- C Losteinkit
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | | | | | | | | | | |
Collapse
|
29
|
Escoubas P, Stankiewicz M, Takaoka T, Pelhate M, Romi-Lebrun R, Wu FQ, Nakajima T. Sequence and electrophysiological characterization of two insect-selective excitatory toxins from the venom of the Chinese scorpion Buthus martensi. FEBS Lett 2000; 483:175-80. [PMID: 11042276 DOI: 10.1016/s0014-5793(00)02099-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The two insecticidal peptides Bm32-VI and Bm33-I, isolated from the venom of the Chinese scorpion Buthus martensi induce paralytical symptoms typical of insect contractive toxins. They show, respectively, 74% and 77% homology with AaIT from Androctonus australis, comparable insecticidal activity and no vertebrate toxicity. Under voltage-clamp conditions, both toxins induced (1) an increased fast Na(+) current, (2) a shift in voltage dependence of Na(+) current activation, (3) the occurrence of a delayed current, and (4) a slow development of a holding current. Increased Na(+) conductance at negative potential values is responsible for axonal hyperexcitability and the contractive paralysis of insect prey.
Collapse
Affiliation(s)
- P Escoubas
- Suntory Institute for Bioorganic Research, Wakayamadai, Osaka, Japan.
| | | | | | | | | | | | | |
Collapse
|
30
|
Murabayashi S, Omokawa S, Takaoka T, Malchesky PS, Nosé Y. Biocompatibility in membrane plasmapheresis: the necessity of global understanding. 1987. Ther Apher 2000; 4:173-82. [PMID: 10805438 DOI: 10.1046/j.1526-0968.2000.004002173.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
31
|
Takaoka T, Terahara M, Sakai M, Kusunoki I. A Fourier transform infrared study of collision induced desorption of N2 on Ni(100) surface. J Chem Phys 1999. [DOI: 10.1063/1.480158] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
32
|
Okabe H, Nagata N, Kaneko Y, Kobayashi J, Kanemoto S, Takaoka T. Extracardiac cavopulmonary connection of fontan procedure with autologous pedicled pericardium without cardiopulmonary bypass. J Thorac Cardiovasc Surg 1998; 116:1073-5. [PMID: 9832701 DOI: 10.1016/s0022-5223(98)70061-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- H Okabe
- Department of Thoracic and Cadiovascular Surgery, Kanagawa Children's Medical Center, Yokohama, Japan
| | | | | | | | | | | |
Collapse
|
33
|
Murakawa T, Takeuchi H, Oda Y, Taki K, Takaoka T, Yagyu K. [Coronary artery fistula with left atrial myxoma: report of a case]. Kyobu Geka 1998; 51:1035-8. [PMID: 9838784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
A 64-year-old male was referred for surgical treatment of left atrial myxoma. Preoperative coronary angiography revealed coronary artery fistula from the left anterior descending artery and the circumflex artery draining into the main pulmonary artery. Operative treatment was performed including resection of the myxoma, patch closure of the atrial septal defect, and closure of the fistula with pledgeted mattress sutures from within the main pulmonary artery on cardiopulmonary bypass. His postoperative course was uneventful, and disappearance of the left atrial myxoma and the coronary artery fistula was ascertained by echocardiography and coronary angiography.
Collapse
Affiliation(s)
- T Murakawa
- Clinic for Cardiovascular Surgery, Japanese Red Cross Medical Center, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
34
|
Matsushita K, Matsuyama T, Nishimura H, Takaoka T, Kuwabara K, Tsukamoto Y, Sugita M, Ogawa S. Marked, sustained expression of a novel 150-kDa oxygen-regulated stress protein, in severely ischemic mouse neurons. Brain Res Mol Brain Res 1998; 60:98-106. [PMID: 9748521 DOI: 10.1016/s0169-328x(98)00174-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The 150-kDa oxygen-regulated protein (ORP150) first was described with reference to the central nervous system in cultured astrocytes subjected to dense hypoxia. Subsequently its transcript was found in macrophages within human aortic atherosclerotic plaques, suggesting a role in protecting cells under hypoxic stress. In a mouse model of permanent focal brain ischemia, we aimed to elucidate the constitutive cellular localization in vivo of ORP150 in the central nervous system as well as the sequential alteration in its mRNA and protein expression during this severe ischemic insult. Immunohistochemical study demonstrated that ORP150 protein normally is present predominantly in neurons. The 78-kDa glucose-regulated protein, which is another well-known stress protein retained in the endoplasmic reticulum, also was stained in neurons. During the first 3 h after ischemia, ORP150 antigenicity was markedly enhanced in severely damaged neurons, while the amount of the glucose-regulated protein was decreased. Preceding this change, orp150 mRNA was selectively induced in neurons undergoing postischemic cytoskeletal proteolysis, as early as 1 h after middle cerebral artery occlusion. These results indicated that ORP150 might be regulated by transcriptional level as for many stress proteins, but unlike previously described other stress proteins it was translated in the center of ischemic lesions despite nearly complete energy depletion. In this paper, the biological potentials of ORP150 protein in the setting of brain ischemia in vivo will also be discussed.
Collapse
Affiliation(s)
- K Matsushita
- Fifth Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya 663, Japan
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Abstract
We treated 43 acute tears of the calcaneofibular ligament by operation in 43 patients after subtalar arthrography. There were 22 men and 21 women with a mean age of 22.3 years (14 to 61). Anteroposterior (AP), lateral and oblique views were obtained with the foot in 45° of internal rotation and the ankle in the neutral position. Any communication or leakage to the ankle, tendon sheaths, subcutaneous tissue and sinus tarsi was recorded. We examined an oblique view of the microrecess along the interosseous ligament and an AP view of the lateral recess just under the distal end of the fibula. We also studied a control group of 27 patients with isolated injuries of the anterior talofibular ligament without rupture of the calcaneofibular ligament. The findings in the two groups were significantly different when examined for leakage to the ankle (p = 0.0002), to the peroneal tendon sheaths (p = 0.0347) and to the subcutaneous tissue (p = 0.0222), absence of the microrecess (p = 0.0055) and presence of the lateral recess (p = 0.0012). Many ankle sprains which involve tearing of the calcaneofibular ligament are accompanied by injuries of the subtalar joint. Combined injuries of the anterior talofibular ligament and calcaneofibular ligament, and isolated injury of the anterior talofibular ligament should be differentiated.
Collapse
Affiliation(s)
- K. Sugimoto
- Department of Orthopaedic Surgery, Saiseikai Nara Hospital, Hachijo, Narashi, Nara 6308145, Japan
| | - N. Samoto
- Matsusaka Chuoh Hospital, Kawai-cho, Matsusaka, Mie 5150818, Japan
| | - T. Takaoka
- Department of Orthopaedic Surgery, Nara Medical University, Shijo-cho, Kashihara, Nara 6340813, Japan
| | - Y. Takakura
- Department of Orthopaedic Surgery, Nara Medical University, Shijo-cho, Kashihara, Nara 6340813, Japan
| | - S. Tamai
- Department of Orthopaedic Surgery, Nara Medical University, Shijo-cho, Kashihara, Nara 6340813, Japan
| |
Collapse
|
36
|
Sugimoto K, Samoto N, Takaoka T, Takakura Y, Tamai S. Subtalar arthrography in acute injuries of the calcaneofibular ligament. J Bone Joint Surg Br 1998; 80:785-90. [PMID: 9768887 DOI: 10.1302/0301-620x.80b5.7921] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We treated 43 acute tears of the calcaneofibular ligament by operation in 43 patients after subtalar arthrography. There were 22 men and 21 women with a mean age of 22.3 years (14 to 61). Anteroposterior (AP), lateral and oblique views were obtained with the foot in 45 degrees of internal rotation and the ankle in the neutral position. Any communication or leakage to the ankle, tendon sheaths, subcutaneous tissue and sinus tarsi was recorded. We examined an oblique view of the microrecess along the interosseous ligament and an AP view of the lateral recess just under the distal end of the fibula. We also studied a control group of 27 patients with isolated injuries of the anterior talofibular ligament without rupture of the calcaneofibular ligament. The findings in the two groups were significantly different when examined for leakage to the ankle (p=0.0002), to the peroneal tendon sheaths (p=0.0347) and to the subcutaneous tissue (p=0.0222), absence of the microrecess (p=0.0055) and presence of the lateral recess (p=0.0012). Many ankle sprains which involve tearing of the calcaneofibular ligament are accompanied by injuries of the subtalar joint. Combined injuries of the anterior talofibular ligament and calcaneofibular ligament, and isolated injury of the anterior talofibular ligament should be differentiated.
Collapse
Affiliation(s)
- K Sugimoto
- Department of Orthopaedic Surgery, Saiseikai Nara Hospital, Japan
| | | | | | | | | |
Collapse
|
37
|
Abstract
We performed a one-stage opening-wedge valgus osteotomy in nine patients to correct a post-traumatic progressive varus deformity of the ankle. The osteotomy site was stabilized with two, three, or four Kirschner wires or with a plate and screws (in one patient). The site of the osteotomy united within two months after the operation in eight patients and at six months in one patient who was fifty-nine years old. The average duration of follow-up was seven years and four months (range, two years and four months to thirteen years and two months). Postoperatively, the range of motion of the ankle was decreased in six patients and remained unchanged in three. However, none of the patients reported any limitation in the activities of daily living, and the four adolescent patients were able to participate in sports activities. The result was graded as excellent for four ankles, good for two, and fair for three.
Collapse
Affiliation(s)
- Y Takakura
- Department of Orthopaedic Surgery, Nara Medical University, Kashihara, Japan.
| | | | | | | | | |
Collapse
|
38
|
Abstract
We examined seven patients with tarsal tunnel syndrome in one foot caused by talocalcaneal coalition and a ganglion. We excised the coalition and the ganglion in six of them. All the patients had pain, sensory disturbance in the sole, and a positive Tinel's sign. Older patients with a long history showed atrophy and weakness of the plantar muscles. Talocalcaneal coalition can be diagnosed on a plain lateral radiograph and an anteroposterior radiograph externally rotated 20 degrees, and confirmed by CT. MRI is also useful for diagnosis. The coalitions were medial, and the ganglion had developed from the incomplete part of the coalition; it was multilocular in some patients. After resection, there was early pain relief but sensory disturbances and Tinel's sign persisted. The postoperative results were excellent in one patient, good in four and fair in one.
Collapse
Affiliation(s)
- Y Takakura
- Nara Medical University, Kashihara, Japan
| | | | | | | |
Collapse
|
39
|
Abstract
We examined seven patients with tarsal tunnel syndrome in one foot caused by talocalcaneal coalition and a ganglion. We excised the coalition and the ganglion in six of them. All the patients had pain, sensory disturbance in the sole, and a positive Tinel’s sign. Older patients with a long history showed atrophy and weakness of the plantar muscles. Talocalcaneal coalition can be diagnosed on a plain lateral radiograph and an anteroposterior radiograph externally rotated 20°, and confirmed by CT. MRI is also useful for diagnosis. The coalitions were medial, and the ganglion had developed from the incomplete part of the coalition; it was multilocular in some patients. After resection, there was early pain relief but sensory disturbances and Tinel’s sign persisted. The postoperative results were excellent in one patient, good in four and fair in one.
Collapse
Affiliation(s)
- Y. Takakura
- Department of Orthopaedic Surgery, Nara Medical University, Kashihara, Nara 634, Japan
| | - T. Kumai
- Department of Orthopaedic Surgery, Nara Medical University, Kashihara, Nara 634, Japan
| | - T. Takaoka
- Department of Orthopaedic Surgery, Nara Medical University, Kashihara, Nara 634, Japan
| | - S. Tamai
- Department of Orthopaedic Surgery, Nara Medical University, Kashihara, Nara 634, Japan
| |
Collapse
|
40
|
Ohta S, Mizuno M, Takaoka T, Yoshida J. Augmentation of anti-Fas antibody-mediated apoptosis on human glioma cells by liposomes associated with the antibody. J Neurooncol 1997; 35:7-11. [PMID: 9266436 DOI: 10.1023/a:1005843600950] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We investigated the susceptibility of five human glioma cell lines to anti-Fas antibody. All human glioma cells tested constitutively expressed Fas antigen on their surfaces and the level of the expression varied slightly in each cell line. The cells had a low susceptibility to anti-Fas antibody-mediated apoptosis. There were four moderately resistant cell lines (U251-SP, U251-MG, SK-MG-1, T98) and one highly resistant cell line (U251 nu/nu). For this study we prepared liposomes containing anti-Fas antibody and studied the augmentation of the antibody-mediated apoptosis. The liposomes induced apoptosis significantly more often than did anti-Fas antibody alone. These results indicate that anti-Fas antibody-mediated apoptosis does not require a critical level of cell surface expression of Fas antigen but rather depends on the intensity of Fas signal transduction.
Collapse
Affiliation(s)
- S Ohta
- Department of Neurosurgery, Nagoya University School of Medicine, Japan
| | | | | | | |
Collapse
|
41
|
Wang XM, Kojima T, Satoh K, Taniguchi Y, Tokumaru K, Saifuku K, Seki M, Kihira K, Ido K, Uchida JY, Ohmori C, Takaoka T, Kimura K. The value of LYM-1 cells for examining vacuole formation and loss of cell viability induced by culture supernates of Helicobacter pylori. J Med Microbiol 1997; 46:705-9. [PMID: 9511820 DOI: 10.1099/00222615-46-8-705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Some strains of Helicobacter pylori are known to produce an extracellular cytotoxin that causes vacuolation in cultured mammalian cells. Screening for such strains makes use of HeLa cells which may not be sensitive enough to detect minimal changes. The aim of this study was to develop a more sensitive cell line. Vacuole formation was examined in HeLa cells, as well as four other cell lines established in this laboratory by ammonium chloride induction. Among five cell lines tested, LYM-1 cells were most sensitive for the detection of intracellular vacuolation with this agent. Loss of cell viability of LYM-1 and HeLa cells induced by H. pylori culture supernates was also examined: LYM-1 were more sensitive than HeLa cells. Cell death was not always accompanied by vacuole formation. This suggests that the mechanism whereby cell death occurs must be different from that for vacuole formation. LYM-1 cells may be useful when measuring vacuole formation and cell death of the cultured cells induced by culture supernates of clinical isolates of H. pylori.
Collapse
Affiliation(s)
- X M Wang
- Department of Gastroenterology, Jichi Medical School and Utsunomiya East Hospital, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Inoue T, Takaoka T, Takagi T, Kano T, Sugiura M. Therapies to prevent vasospasm after acute surgery of aneurysmal subarachnoid hemorrhage. Clin Neurol Neurosurg 1997. [DOI: 10.1016/s0303-8467(97)82175-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
43
|
Wakabayashi T, Yoshida J, Takaoka T, Sadamoto T, Mizuno M, Kimura S. Enzyme immunoassay of glioma cell tenascin secretion and augmentation by tumor necrosis factor-alpha. Neurol Med Chir (Tokyo) 1997; 37:392-7; discussion 397-8. [PMID: 9184437 DOI: 10.2176/nmc.37.392] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Expression of tenascin, an extracellular matrix glycoprotein, was measured in glioma cell lines using a newly established enzyme immunoassay. Secreted tenascin was found at concentrations greater than 800 ng/ml in eight of 14 glioma, three small cell lung carcinoma, two melanoma, and one sarcoma cell lines. The remaining six glioma and other carcinoma cell lines, and cell lines originating from normal tissues demonstrated low levels or no secretion into the supernatant. The glioma cell line, U-251-MG nu/nu, which has almost 100% transplantability in nude mice, had the highest expression level of tenascin among the glioma cell lines examined. Even low secretor glioma cell lines released high concentrations of tenascin, detectable by assaying the NP-40 solubilized cell lysates. Flow cytometric analysis revealed that tenascin was located on both the cell surface and primarily in the cytoplasm of glioma cells. When the glioma cell lines were exposed to tumor necrosis factor-alpha (TNF-alpha), levels of secreted tenascin increased between 36% and 380%, whereas transforming growth factor-beta induced only minimal changes. These results suggest that glioma cell lines may be classified according to the degree of tenascin secretion/expression: high secretor type, low secretor type, and non-expressing type. The increase in tenascin secretion by TNF-alpha suggests that the expression of tenascin in glioma growth and development may be mediated through a cytokine network.
Collapse
Affiliation(s)
- T Wakabayashi
- Department of Neurosurgery, Nagoya University School of Medicine
| | | | | | | | | | | |
Collapse
|
44
|
Abstract
To investigate changes in the radiographic appearance during weightbearing in hallux valgus and to examine the importance of a weightbearing view, a comparative study was performed of accurate dorsoplantar radiographs of 108 symptomatic hallux valgus feet in 73 female patients and 100 normal feet in 69 females, which were taken weightbearing and nonweightbearing. The hallux valgus angle in the hallux valgus group increased on weightbearing, whereas that in the normal group decreased. The intermetatarsal angle between the first and second metatarsals increased on weightbearing in both groups. The degree of the changes of the angles was closely related with the degree of the hallux valgus deformity. The intermetatarsal angle between the fourth and fifth metatarsals decreased on weightbearing in the both groups. A weightbearing view is necessary to evaluate the structural configuration of hallux valgus, because muscle imbalance around the first metatarsophalangeal joint in hallux valgus causes an increase of a hallux valgus angle on weightbearing.
Collapse
Affiliation(s)
- Y Tanaka
- Department of Orthopaedic Surgery, Nara Medical University, Kashihara, Japan
| | | | | | | | | | | |
Collapse
|
45
|
Takaoka T, Okumura M, Ohgushi H, Inoue K, Takakura Y, Tamai S. Histological and biochemical evaluation of osteogenic response in porous hydroxyapatite coated alumina ceramics. Biomaterials 1996; 17:1499-505. [PMID: 8853120 DOI: 10.1016/0142-9612(96)89774-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We compared the osteogenic response in porous alumni (Al) and hydroxyapatite coated porous alumni ceramic (HA/Al) by grafting rat bone marrow cells with these implants subcutaneously in the back of syngeneic rats. The ceramics did not show any bone formation without marrow, but did when combined with marrow cells. The osteogenesis in HA/Al began directly on the ceramic surface, but in Al began away from the ceramic surface, and fibrous tissue interposition was seen between the de novo bone and its surface. Alkaline phosphatase activity and bone specific bone gla protein content in HA/Al with marrow were both about three times higher than in Al with marrow. These results indicate that HA/Al has excellent osteoconductive properties and that a composite of marrow and HA/Al is clinically applicable osteogenic biomaterial.
Collapse
Affiliation(s)
- T Takaoka
- Department of Orthopaedic Surgery, Nara Medical University, Japan
| | | | | | | | | | | |
Collapse
|
46
|
Yoshida J, Takaoka T, Mizuno M, Momota H, Okada H. Cytolysis of malignant glioma cells by lymphokine-activated killer cells combined with anti-CD3/antiglioma bifunctional antibody and tumor necrosis factor-alpha. J Surg Oncol 1996; 62:177-82. [PMID: 8667624 DOI: 10.1002/(sici)1096-9098(199607)62:3<177::aid-jso6>3.0.co;2-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
With the aim of developing an effective immunotherapy for malignant glioma, glioma cells were incubated with tumor necrosis factor-alpha (TNF-alpha) to increase their susceptibility to lysis by lymphokine-activated killer (LAK) cells. Treatment with exogenous TNF-alpha induced the expression of intercellular adhesion molecule-1 (ICAM-1) on the surface of glioma cells. In addition, the cytolytic activity of LAK cells toward exogenous TNF-alpha treated glioma cells was significantly greater than LAK cell activity toward untreated glioma cells. This increase in cytolytic activity was blocked by anti-ICAM-1 monoclonal antibodies (MAb). Furthermore, co-treatment with a bifunctional antibody (BFA) composed of anti-CD3 (UCHT1) and antiglioma (G-22) antibodies synergistically increased the cytolytic activity of LAK cells towards TNF-alpha-treated glioma cells. These results indicate that a combination of exogenous TNF-alpha and anti-CD3/antiglioma BFA may provide an effective modified adoptive immunotherapy for patients with malignant glioma.
Collapse
MESH Headings
- Antibodies, Bispecific/immunology
- Antibodies, Bispecific/therapeutic use
- Antibodies, Monoclonal/pharmacology
- Antibodies, Neoplasm/immunology
- Antibodies, Neoplasm/therapeutic use
- CD3 Complex/immunology
- CD3 Complex/therapeutic use
- Cytotoxicity, Immunologic/drug effects
- Flow Cytometry
- Glioma/immunology
- Glioma/therapy
- Humans
- Immunotherapy, Adoptive/methods
- Intercellular Adhesion Molecule-1/drug effects
- Intercellular Adhesion Molecule-1/immunology
- Killer Cells, Lymphokine-Activated/drug effects
- Killer Cells, Lymphokine-Activated/immunology
- Recombinant Proteins/pharmacology
- Recombinant Proteins/therapeutic use
- Tumor Cells, Cultured
- Tumor Necrosis Factor-alpha/pharmacology
- Tumor Necrosis Factor-alpha/therapeutic use
Collapse
Affiliation(s)
- J Yoshida
- Department of Neurosurgery, Nagoya University School of Medicine, Japan
| | | | | | | | | |
Collapse
|
47
|
Takagi N, Yasui Y, Takaoka T, Sawada M, Yanagita H, Aruga T, Nishijima M. Quantum delocalization of H on Pd(110): A vibrational study. Phys Rev B Condens Matter 1996; 53:13767-13771. [PMID: 9983130 DOI: 10.1103/physrevb.53.13767] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
48
|
Yagiu K, Ninomiya M, Kubota H, Chikada M, Ono M, Imanaka K, Kaneko Y, Takeshita M, Takaoka T, Etsure M, Kozuka H, Furuse A. [Follow-up results of surgery of acquired heart valve diseases and their improvement]. Nihon Kyobu Geka Gakkai Zasshi 1996; 44:333-335. [PMID: 8926410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
49
|
Kitano Y, Takaoka T, Nakahara M, Harii K, Iwamori M. Enhancement of adhesive property of epithelial cell line Mm2T by culture in the presence of methylated vitamin B12. Cell Struct Funct 1995; 20:211-21. [PMID: 7586011 DOI: 10.1247/csf.20.211] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
A thymic epithelial cell line Mm2T was cultured in a medium containing a high concentration (100 micrograms/ml) of methylated vitamin B12 (CH3-B12). After 19 days, cells were found to have a flat phenotype, to have lost the floating cells which were observed in the control cells at the confluent stage, and to have acquired a resistance to trypsin. However, treatment of the CH3-B12-treated cells with EDTA resulted in a dissociation of cell-to-cell contact and reaggregation was achieved by addition of Ca2+, indicating the involvement of Ca2+ ion in cell-to-cell contact. Electron microscopic analyses revealed that the CH3-B12-treated cells were nearly square in their vertical section, which was in contrast to the dome-shaped feature of the control cells, and their cell-to-cell contact area was significantly widespread, as compared to those of the control, indicating that Mm2T cells acquires an adhesive property by treatment with CH3-B12. Biochemical analyses of both cells indicated that the concentration of glucosylceramide in the CH3-B12-treated cells was higher than that of the control. Free glucose characteristically inhibited the reattachment of cells dissociated with EDTA, suggesting the involvement of glucose in the cell-to-cell adhesion of CH3-B12-treated cells. In addition, WGA-binding glycoconjugates were intensely observed in the boundary region of CH3-B12-treated cells by immunohistochemical staining, but not in that of the control cells. It is suggested that CH3-B12 may affect the morphological alteration of Mm2T by enhancing cell adhesion through elevated expression of the C-type lectin.
Collapse
Affiliation(s)
- Y Kitano
- Department of Plastic Surgery, Faculty of Medicine, University of Tokyo, Japan
| | | | | | | | | |
Collapse
|
50
|
Hayashi M, Manabe K, Takaoka T, Yamada I, Kida K, Matsuda H, Yoshinaga J. Long-term change of anti-acetylcholine receptor antibody in patients with myasthenia gravis after thymectomy. Acta Paediatr Jpn 1995; 37:362-6. [PMID: 7645389 DOI: 10.1111/j.1442-200x.1995.tb03331.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Anti-acetylcholine receptor antibody (AChR Ab) plays an important role in the pathogenesis of myasthenia gravis (MG). We investigated the change of anti-AChR Ab titer after thymectomy of 10 MG patients including five patients whose age at onset was younger than 16 years. Anti-AChR Ab titer was increased in four of six patients with remission and three of four patients without remission. Change of anti-AChR Ab titer in individual patients showed an increase occurred 1-4 years after thymectomy. It is likely that thymectomy influences immune response and induces autoreactive lymphocytes and autoantibodies.
Collapse
Affiliation(s)
- M Hayashi
- Department of Pediatrics, Ehime University School of Medicine, Japan
| | | | | | | | | | | | | |
Collapse
|