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Pooh RK, Takeda M, Itoh K, Yoshimatsu J, Ogo K, Machida M, Ohashi H, Shimokawa O. Open isthmus and lambda (Λ) sign of early Joubert syndrome: elucidating development of molar tooth sign. Ultrasound Obstet Gynecol 2024. [PMID: 38642341 DOI: 10.1002/uog.27666] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/29/2024] [Accepted: 04/03/2024] [Indexed: 04/22/2024]
Affiliation(s)
- R K Pooh
- Fetal Brain Center, CRIFM Prenatal Medical Clinic, Osaka, Japan
- Department of Clinical Research, Ritz Medical Co. Ltd., Osaka, Japan
| | - M Takeda
- Department of Clinical Research, Ritz Medical Co. Ltd., Osaka, Japan
| | - K Itoh
- Department of Diagnostic Pathology, Kyoto Chubu Medical Center, Kyoto, Japan
| | - J Yoshimatsu
- Department of Obstetrics and Gynecology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - K Ogo
- Department of Pathology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - M Machida
- Fetal Brain Center, CRIFM Prenatal Medical Clinic, Osaka, Japan
| | - H Ohashi
- Department of Clinical Research, Ritz Medical Co. Ltd., Osaka, Japan
| | - O Shimokawa
- Department of Clinical Research, Ritz Medical Co. Ltd., Osaka, Japan
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Seto I, Yamaguchi H, Takagawa Y, Suzuki M, Takayama K, Tominaga T, Machida M, Murakami M. Retrospective Clinical Outcomes of Proton Beam Therapy for Unresectable Locally Advanced Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1121] [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: 10/31/2022]
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Murakami M, Kato T, Yamaguchi H, Seto I, Takayama K, Tominaga T, Takagawa Y, Suzuki M, Machida M, Kikuchi Y. Proton Beam Re-Irradiation for In-Field Recurrent Non-Small Cell Lung Cancer after Radiotherapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mongkonchoo K, Yamana H, Aso S, Machida M, Takasaki Y, Jo T, Yasunaga H, Chongsuvivatwong V, Liabsuetrakul T. Prediction of outpatient visits and expenditure under the Universal Coverage Scheme in Bangkok using subscriber's attributes: A random forest analysis. Public Health in Practice 2021; 2:100190. [PMID: 36101615 PMCID: PMC9461546 DOI: 10.1016/j.puhip.2021.100190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 09/22/2021] [Indexed: 10/26/2022] Open
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Shiono Y, Matsuo H, Fujita H, Tanaka N, Ogasawara Y, Kawamura I, Katayama Y, Matsuo A, Kawase Y, Kakuta T, Takashima H, Yokoi H, Ohira H, Suwa S, Oguri M, Yamamoto F, Kubo T, Akasaka T, Shiono Y, Katayama Y, Hironori K, Kubo T, Akasaka T, Tanaka N, Yamashita J, Fujita H, Matsuo A, Matsuo H, Kawase Y, Kawamura I, Kakuta T, Hoshino M, Sugano T, Takashima H, Amano T, Yokoi H, Yamamoto Y, Nozaki Y, Machida M, Kobori M, Kikuchi T, Ohira H, Yoshino H, Ishiguro H, Wakabayashi Y, Kondo T, Terai H, Suwa T, Kimura T, Kawajiri T, Hirohata A, Uemura S, Neishi Y, Sakamoto T, Yamada M, Okeie K, Hishikari K, Oguri M, Uetani T, Saegusa T, Yamamoto F, Yamada M. Diagnostic Accuracy of Diastolic Fractional Flow Reserve for Functional Evaluation of Coronary Stenosis. JACC: Asia 2021; 1:230-241. [PMID: 36338166 PMCID: PMC9627917 DOI: 10.1016/j.jacasi.2021.07.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/28/2021] [Accepted: 07/08/2021] [Indexed: 01/10/2023]
Abstract
Background In the resting conditions, narrowing the window of coronary pressure measurements from the whole cardiac cycle to diastole improves diagnostic performance of coronary pressure–derived physiological index. However, whether this also applies to the hyperemic conditions has not yet been thoroughly evaluated. Objectives The purpose of this study was to assess whether diastolic fractional flow reserve (diastolic FFR) has better diagnostic performance in identifying ischemia-causing coronary lesions than conventional FFR in a prospective, multicenter, and independent core laboratory–based environment. Methods In this prospective multicenter registry at 29 Japanese centers, we compared the diagnostic performance of FFR, diastolic FFR, resting distal to aortic coronary pressure (Pd/Pa), and diastolic pressure ratio (dPR) using myocardial perfusion scintigraphy (MPS) as the reference standard in 378 patients with single-vessel coronary disease. Results Inducible myocardial ischemia was found on MPS in the relevant myocardial territory of the target vessel in 85 patients (22%). In the receiver-operating curve analyses, diastolic FFR had comparable area under the curve (AUC) compared with FFR (AUCdiastolic FFR: 0.66; 95% confidence interval [CI]: 0.58-0.73, vs AUCFFR: 0.66; 95% CI: 0.58-0.74, P = 0.624). FFR and diastolic FFR showed significantly larger AUCs than resting Pd/Pa (0.62; 95% CI: 0.54-0.70; P = 0.033 and P = 0.046) but did not show significantly larger AUCs than dPR (0.62; 95% CI: 0.55-0.70; P = 0.102 and P = 0.113). Conclusions Diastolic FFR showed a similar diagnostic performance to FFR as compared with MPS. This result reaffirms the use of FFR as the most accurate invasive physiological lesion assessment. (Diagnostic accuracy of diastolic fractional flow reserve (d-FFR) for functional evaluation of coronary stenosis; UMIN000015906)
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Pooh RK, Machida M, Nakamura T, Uenishi K, Chiyo H, Itoh K, Yoshimatsu J, Ueda H, Ogo K, Chaemsaithong P, Poon LC. Increased Sylvian fissure angle as early sonographic sign of malformation of cortical development. Ultrasound Obstet Gynecol 2019; 54:199-206. [PMID: 30381845 PMCID: PMC6772089 DOI: 10.1002/uog.20171] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/17/2018] [Accepted: 10/19/2018] [Indexed: 05/20/2023]
Abstract
OBJECTIVE To evaluate Sylvian fissure development by assessing Sylvian fissure angles in fetuses with malformation of cortical development (MCD). METHODS This was a retrospective study of 22 fetuses with MCD. Cases with a stored three-dimensional (3D) brain volume acquired at 18 + 0 to 30 + 6 weeks of gestation at an ultrasound-based research clinic between January 2010 and December 2017 were identified through a database. Of the 22 fetuses, seven had an extracranial abnormality, such as cardiac, renal, gastrointestinal and/or digital anomalies, and five had a minor abnormality such as micrognathia, low-set ears and/or single umbilical artery. To confirm the final clinical diagnosis of brain abnormality, postmortem histological findings or prenatal or postnatal magnetic resonance images were used. For measurement of Sylvian fissure angle, an anterior coronal plane of the fetal brain on transvaginal 3D volume multiplanar imaging was visualized as a single image from the three orthogonal views. The right and left Sylvian fissure angles were measured between a horizontal reference line (0°) and a line drawn along the upper side of the respective Sylvian fissure. The Sylvian fissure angle on both sides was plotted on the graphs of the reference ranges for gestational age in weeks. RESULTS In 21 (95.5%; 95% CI, 86.8-100.0%) of 22 fetuses with MCD, the Sylvian fissure angle on one or both sides was larger than the 90th percentile of the normal reference. There was one case with apparent focal MCD in the parietal lobe, but the Sylvian fissure angles were normal. A case with apparent unilateral cortical dysplasia and one with apparent unilateral schizencephaly had conspicuous discrepancies between the left and right Sylvian fissure angles. Abnormal genetic test results were obtained in six cases, including four cases with a mutation in a single gene. CONCLUSIONS This study has shown that the Sylvian fissures, as defined by the Sylvian fissure angle, have delayed development in most MCD cases prior to the diagnosis of the condition. The Sylvian fissure angle may potentially be a strong indicator for the subsequent development of cortical malformation, before the time point at which the gyri and sulci become obvious on the fetal brain surface. Further research is required to validate these findings. © 2018 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of the International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- R. K. Pooh
- CRIFM Clinical Research Institute of Fetal Medicine Pooh Maternity ClinicOsakaJapan
| | - M. Machida
- CRIFM Clinical Research Institute of Fetal Medicine Pooh Maternity ClinicOsakaJapan
| | - T. Nakamura
- CRIFM Clinical Research Institute of Fetal Medicine Pooh Maternity ClinicOsakaJapan
| | - K. Uenishi
- CRIFM Clinical Research Institute of Fetal Medicine Pooh Maternity ClinicOsakaJapan
| | - H. Chiyo
- CRIFM Clinical Research Institute of Fetal Medicine Pooh Maternity ClinicOsakaJapan
| | - K. Itoh
- Department of Pathology and Applied Neurobiology, Graduate School of Medical ScienceKyoto Prefectural University of MedicineKyotoJapan
| | - J. Yoshimatsu
- Department of Obstetrics and GynecologyNational Cerebral and Cardiovascular CenterOsakaJapan
| | - H. Ueda
- Department of PathologyNational Cerebral and Cardiovascular CenterOsakaJapan
| | - K. Ogo
- Department of PathologyNational Cerebral and Cardiovascular CenterOsakaJapan
| | - P. Chaemsaithong
- Department of Obstetrics and GynaecologyPrince of Wales Hospital, The Chinese University of Hong KongShatinHong Kong SAR
| | - L. C. Poon
- Department of Obstetrics and GynaecologyPrince of Wales Hospital, The Chinese University of Hong KongShatinHong Kong SAR
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Poon LC, Sahota DS, Chaemsaithong P, Nakamura T, Machida M, Naruse K, Wah YM, Leung TY, Pooh RK. Transvaginal three-dimensional ultrasound assessment of Sylvian fissures at 18-30 weeks' gestation. Ultrasound Obstet Gynecol 2019; 54:190-198. [PMID: 30381851 DOI: 10.1002/uog.20172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/16/2018] [Accepted: 10/19/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To (1) evaluate the normal development of the Sylvian fissures in the anterior coronal view of the fetal brain at 18-30 weeks' gestation by transvaginal three-dimensional (3D) ultrasound, (2) develop reference ranges of measurements of the right and left Sylvian fissure angles during normal pregnancy at 18-30 weeks' gestation, and (3) examine intra- and interobserver repeatability of measurements of the right and left Sylvian fissure angles. METHODS This was a prospective cross-sectional study of 422 women with a singleton pregnancy attending an ultrasound-based research clinic between March and December 2017. The entry criteria for the study were appropriately grown live fetus with no suspected structural and/or chromosomal defects between 18 + 0 and 30 + 6 weeks' gestation. Normal development of the Sylvian fissures was assessed in the anterior coronal plane of the fetal brain using transvaginal 3D volume multiplanar imaging. The coronal view was visualized as a single image from the three orthogonal views. Subsequently, the right and left Sylvian fissure angles were measured between a horizontal reference line (0°) and a line drawn along the upper side of the respective Sylvian fissure. Intra- and interobserver repeatability of the Sylvian fissure angle measurements was assessed by Bland-Altman plots. Reference equations were constructed for right and left Sylvian fissure angles for gestational age (GA) and head circumference (HC) using the Generalized Additive Models for Location Scale and Shape package. RESULTS In the anterior coronal view of the fetal brain, an inward rotation of the upper portion of the Sylvian fissures was observed during the second and third trimesters of pregnancy. There was a significant negative polynomial association between the Sylvian fissure angles and GA and HC. Both Sylvian fissure angles crossed the reference line (zero), going from positive to negative, at around 25 weeks' gestation or at HC of 22 cm. Z-score difference between the smoothed percentiles of the right and left Sylvian fissure angles indicated that median, 10th and 90th smoothed percentiles were closest and almost the same for the GA-based references between 18 and 28 weeks and for the HC-based references between 14 and 24 cm. The intraclass correlation coefficient of the right and left Sylvian fissure angle measurements between the two sonographers was excellent at 0.993 (95% CI, 0.988-0.996) and 0.991 (95% CI, 0.985-0.995), respectively. On Bland-Altman analysis, the mean difference between the two sonographers in right Sylvian fissure angle measurement was 0.4° (95% CI, -10.2 to 10.1°) and in left Sylvian fissure angle it was 1.0° (95% CI, -9.6 to 11.6°). CONCLUSIONS Assessment of the Sylvian fissure angles is highly reproducible. Sylvian fissure angle reference charts can serve as a screening tool for malformations of cortical development, guiding subsequent follow-up and referral for fetal brain magnetic resonance imaging and/or assessment by an expert neurosonologist. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- L C Poon
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR
| | - D S Sahota
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR
| | - P Chaemsaithong
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR
| | - T Nakamura
- CRIFM Clinical Research Institute of Fetal Medicine Pooh Maternity Clinic, Osaka, Japan
| | - M Machida
- CRIFM Clinical Research Institute of Fetal Medicine Pooh Maternity Clinic, Osaka, Japan
| | - K Naruse
- St Barnabas' Hospital, Osaka, Japan
| | - Y M Wah
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR
| | - T Y Leung
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR
| | - R K Pooh
- CRIFM Clinical Research Institute of Fetal Medicine Pooh Maternity Clinic, Osaka, Japan
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Watanabe T, Takahashi Y, Hirabayashi K, Tomaru U, Machida M. Acute fulminant myocarditis in a patient with primary Sjögren's syndrome. Scand J Rheumatol 2018; 48:164-165. [PMID: 30516409 DOI: 10.1080/03009742.2018.1514068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- T Watanabe
- a Department of Internal Medicine , Tomakomai City Hospital , Tomakomai , Japan
| | - Y Takahashi
- b Department of Cardiology , Tomakomai City Hospital , Tomakomai , Japan
| | - K Hirabayashi
- b Department of Cardiology , Tomakomai City Hospital , Tomakomai , Japan
| | - U Tomaru
- c Department of Pathology , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - M Machida
- b Department of Cardiology , Tomakomai City Hospital , Tomakomai , Japan
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Williams BL, Sutton AM, Fitzpatrick ME, Machida M, Wellman LL, Lonart G, Sanford LD. 0137 AMYGDALAR REGULATION OF PONTINE REM REGULATORY REGIONS: EFFECTS OF SLEEP. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Wellman LL, Sutton AM, Kim MH, Koech OK, Fitzpatrick ME, Williams BL, Machida M, Yoon H, Lonart G, Sanford LD. 0136 OPTOGENETIC STIMULATION AND INHIBITION OF THE CENTRAL NUCLEUS OF THE AMYGDALA ALTERS FIRING IN LOCUS COERULEUS NEURONS. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yagi M, Ohne H, Konomi T, Fujiyoshi K, Kaneko S, Komiyama T, Takemitsu M, Yato Y, Machida M, Asazuma T. Teriparatide improves volumetric bone mineral density and fine bone structure in the UIV+1 vertebra, and reduces bone failure type PJK after surgery for adult spinal deformity. Osteoporos Int 2016; 27:3495-3502. [PMID: 27341809 DOI: 10.1007/s00198-016-3676-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 06/16/2016] [Indexed: 12/24/2022]
Abstract
UNLABELLED We conducted a prospective comparative study of the effect of teriparatide therapy for preventing vertebral-failure-type PJK after reconstructive surgery for adult spinal deformity. Prophylactic teriparatide improved the volumetric bone mineral density and fine bone structure of the vertebra above the upper-instrumented vertebra and reduced the incidence of vertebral-failure-type PJK. INTRODUCTION Proximal junctional kyphosis (PJK) is a complication after corrective surgery for spinal deformity. This study sought to determine whether teriparatide (TP) is an effective prophylactic against PJK type 2 (vertebral fracture) in surgically treated patients with adult spinal deformity (ASD). METHODS Forty-three patients who started TP therapy immediately after surgery and 33 patients who did not receive TP were enrolled in this prospective case series. These patients were female, over 50, surgically treated for ASD, and followed for at least 2 years. Preoperative and postoperative standing whole-spine X-rays and dual-energy X-ray absorptiometry scans, and multidetector CT images obtained before and 6 months after surgery were used to analyze the bone strength in the vertebra above the upper-instrumented vertebra (UIV+1). RESULTS Mean age was 67.9 years. After 6 months of treatment, mean hip-bone mineral density (BMD) increased from 0.721 to 0.771 g/cm2 in the TP group and decreased from 0.759 to 0.729 g/cm2 in the control group. This percent BMD change between groups was significant (p < 0.05). The volumetric BMD (326 to 366 mg/cm3) and bone mineral content (BMC) (553 to 622 mg) at UIV+1 were also significantly increased in TP group. The bone volume/tissue volume ratio increased from 46 to 54 % in the TP group, and the trabecular bone thickness and number increased by 14 and 5 %, respectively. At the 2-year follow-up, the PJK type 2 incidence was significantly lower in the TP group (4.6 %) than in the control group (15.2 %; p = .02). CONCLUSIONS Prophylactic TP treatment improved the volumetric BMD and fine bone structure at UIV+1 and reduced the PJK-type 2 incidence.
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Affiliation(s)
- M Yagi
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan.
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan.
| | - H Ohne
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
| | - T Konomi
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
| | - K Fujiyoshi
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
| | - S Kaneko
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
| | - T Komiyama
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
| | - M Takemitsu
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
| | - Y Yato
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
| | - M Machida
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
| | - T Asazuma
- Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, 2-37-1, Musahsimurayama City Gakuen, Tokyo, Japan
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Takeuchi T, Aono N, Oka N, Obata R, Okuyama N, Machida M, Nagao K, Igarashi H, Kyono K. Does sperm origin have an impact on morphokinetics of human zygotes? Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.856] [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: 10/21/2022]
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Nagoshi N, Kaneko S, Fujiyoshi K, Takemitsu M, Yagi M, Iizuka S, Miyake A, Hasegawa A, Machida M, Konomi T, Machida M, Asazuma T, Nakamura M. Characteristics of neuropathic pain and its relationship with quality of life in 72 patients with spinal cord injury. Spinal Cord 2015; 54:656-61. [DOI: 10.1038/sc.2015.210] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 11/02/2015] [Accepted: 11/04/2015] [Indexed: 11/09/2022]
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Ikeuchi K, Kobayashi Y, Suzuki K, Itoh M, Kajimoto R, Bourges P, Christianson AD, Nakamura H, Machida M, Sato M. Phonons of Fe-based superconductor Ca10Pt4As8(Fe1-x Pt x As)10. J Phys Condens Matter 2015; 27:465701. [PMID: 26510184 DOI: 10.1088/0953-8984/27/46/465701] [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] [Indexed: 06/05/2023]
Abstract
We report the results of inelastic neutron scattering measurements on particular phonons of a superconducting (SC) Ca10Pt4As8(Fe1-x Pt x As)10 with the onset transition temperature T c ~ 33 K to investigate mainly what roles orbital fluctuation plays in Cooper pairing, where we observed a slight softening of the in-plane transverse acoustic mode corresponding to the elastic constant C 66. This softening starts at temperature T well above the SC T c, as T decreases. An anomalously strong change of the scattering intensity of in-plane optical modes was observed at the M point of the pseudo tetragonal reciprocal space in the range of 35 < ω < 40 meV with decreasing T from far above T c. Because this ω region mainly corresponds to the motion of Fe and As atoms in the FeAs planes, the finding presents information on the coupling between the orbital fluctuation of Fe 3d electrons and the lattice system, useful for studying the possible roles of orbital fluctuation in the pairing mechanism and/or the appearance of the so-called nematic phase.
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Affiliation(s)
- K Ikeuchi
- Research Center for Neutron Science and Technology, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
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Kawai A, Araki N, Ando Y, Nakano K, Machida M, Yoshida P. 3438 Post marketing surveillance (PMS) in Japan for soft tissue sarcoma (STS) patients treated with pazopanib. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31911-6] [Citation(s) in RCA: 2] [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: 11/25/2022]
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Ishio A, Machida M, Muraoka Y. Equilibrial dysfunction in idiopathic scoliosis using three dimensional motion analysis with force plate. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3487] [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]
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Shibata S, Takahashi H, Ono N, Wada N, Kubo H, Shinozaki K, Saito H, Inamoto N, Machida M, Atsuda K, Echizen H. Longitudinal monitoring of CYP3A activity in patients receiving 3 cycles of itraconazole pulse therapy for onychomycosis. J Clin Pharm Ther 2014; 39:181-5. [DOI: 10.1111/jcpt.12127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 12/10/2013] [Indexed: 11/30/2022]
Affiliation(s)
- S. Shibata
- Department of Pharmacy; Kitasato Institute Hospital; Tokyo Japan
| | - H. Takahashi
- Department of Biopharmaceutics; Meiji Pharmaceutical University; Tokyo Japan
| | - N. Ono
- Department of Dermatology; Keio University School of Medicine; Tokyo Japan
| | - N. Wada
- Department of Dermatology; Keio University School of Medicine; Tokyo Japan
| | - H. Kubo
- Faculty of Pharmacy; Iwaki Meisei University; Fukushima Japan
| | - K. Shinozaki
- Department of Clinical Pharmacy; Center for Clinical Pharmacy and Sciences; School of Pharmacy; Kitasato University; Tokyo Japan
| | - H. Saito
- Department of Dermatology; Saitama City Hospital; Saitama Japan
| | - N. Inamoto
- Department of Dermatology; Kitasato Institute Hospital; Tokyo Japan
| | - M. Machida
- Department of Pharmacy; Misato Central General Hospital; Saitama Japan
| | - K. Atsuda
- Department of Pharmacy; Kitasato Institute Hospital; Tokyo Japan
- Department of Clinical Pharmacy; Center for Clinical Pharmacy and Sciences; School of Pharmacy; Kitasato University; Tokyo Japan
| | - H. Echizen
- Department of Pharmacotherapy; Meiji Pharmaceutical University; Tokyo Japan
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Ngoma AM, Goto A, Yamazaki S, Machida M, Kanno T, Nollet KE, Ohto H, Yasumura S. Barriers and motivators to blood donation among university students in Japan: development of a measurement tool. Vox Sang 2013; 105:219-24. [DOI: 10.1111/vox.12044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 03/26/2013] [Accepted: 03/27/2013] [Indexed: 11/29/2022]
Affiliation(s)
- A. M. Ngoma
- Department of Public Health; Fukushima Medical University School of Medicine; Fukushima; Japan
| | | | - S. Yamazaki
- Department of Public Health; Fukushima Medical University School of Medicine; Fukushima; Japan
| | - M. Machida
- Department of Public Health; Fukushima Medical University School of Medicine; Fukushima; Japan
| | | | - K. E. Nollet
- Department of Blood Transfusion and Transplantation Immunology; Fukushima Medical University School of Medicine; Fukushima; Japan
| | - H. Ohto
- Department of Blood Transfusion and Transplantation Immunology; Fukushima Medical University School of Medicine; Fukushima; Japan
| | - S. Yasumura
- Department of Public Health; Fukushima Medical University School of Medicine; Fukushima; Japan
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Yamagishi K, Iso H, Kokubo Y, Saito I, Yatsuya H, Ishihara J, Inoue M, Tsugane S, Sobue T, Hanaoka T, Ogata J, Baba S, Mannami T, Okayama A, K. Y, Miyakawa K, Saito F, Koizumi A, Sano Y, Hashimoto I, Ikuta T, Tanaba Y, Miyajima Y, Suzuki N, Nagasawa S, Furusugi Y, Nagai N, Sanada H, Hatayama Y, Kobayashi F, Uchino H, Shirai Y, Kondo T, Sasaki R, Watanabe Y, Miyagawa Y, Kobayashi Y, Machida M, Kishimoto Y, Takara E, Fukuyama T, Kinjo M, Irei M, Sakiyama H, Imoto K, Yazawa H, Seo T, Seiko A, Ito F, Shoji F, Saito R, Murata A, Minato K, Motegi K, Fujieda T, Abe T, Katagiri M, Suzuki M, Matsui K, Doi M, Terao A, Ishikawa Y, Tagami T, Doi H, Urata M, Okamoto N, Ide F, Sueta H, Sakiyama H, Onga N, Takaesu H, Uehara M, Horii F, Asano I, Yamaguchi H, Aoki K, Maruyama S, Ichii M, Takano M, Matsushima S, Natsukawa S, Akabane M, Konishi M, Okada K, Honda Y, Sakurai KYS, Tsuchiya N, Sugimura H, Tsubono Y, Kabuto M, Tominaga S, Iida M, Ajiki W, Ioka A, Sato S, Yasuda N, Nakamura K, Kono S, Suzuki K, Takashima Y, Yoshida M, Maruyama E, Yamaguchi M, Matsumura Y, Sasaki S, Watanabe S, Kadowaki T, Noda M, Mizoue T, Kawaguchi Y, Shimizu H. Dietary intake of saturated fatty acids and incident stroke and coronary heart disease in Japanese communities: the JPHC Study. Eur Heart J 2013; 34:1225-32. [DOI: 10.1093/eurheartj/eht043] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Kakinuma R, Ashizawa K, Kobayashi T, Fukushima A, Hayashi H, Kondo T, Machida M, Matsusako M, Minami K, Oikado K, Okuda M, Takamatsu S, Sugawara M, Gomi S, Muramatsu Y, Hanai K, Muramatsu Y, Kaneko M, Tsuchiya R, Moriyama N. Comparison of sensitivity of lung nodule detection between radiologists and technologists on low-dose CT lung cancer screening images. Br J Radiol 2012; 85:e603-8. [PMID: 22919013 DOI: 10.1259/bjr/75768386] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES The objective of this study was to compare the sensitivity of detection of lung nodules on low-dose screening CT images between radiologists and technologists. METHODS 11 radiologists and 10 technologists read the low-dose screening CT images of 78 subjects. On images with a slice thickness of 5 mm, there were 60 lung nodules that were ≥5 mm in diameter: 26 nodules with pure ground-glass opacity (GGO), 7 nodules with mixed ground-glass opacity (GGO with a solid component) and 27 solid nodules. On images with a slice thickness of 2 mm, 69 lung nodules were ≥5 mm in diameter: 35 pure GGOs, 7 mixed GGOs and 27 solid nodules. The 21 observers read screening CT images of 5-mm slice thickness at first; then, 6 months later, they read screening CT images of 2-mm slice thickness from the 78 subjects. RESULTS The differences in the mean sensitivities of detection of the pure GGOs, mixed GGOs and solid nodules between radiologists and technologists were not statistically significant, except for the case of solid nodules; the p-values of the differences for pure GGOs, mixed GGOs and solid nodules on the CT images with 5-mm slice thickness were 0.095, 0.461 and 0.005, respectively, and the corresponding p-values on CT images of 2-mm slice thickness were 0.971, 0.722 and 0.0037, respectively. CONCLUSION Well-trained technologists may contribute to the detection of pure and mixed GGOs ≥5 mm in diameter on low-dose screening CT images.
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Affiliation(s)
- R Kakinuma
- Research Center for Cancer Prevention and Screening, National Cancer Center, Tokyo, Japan.
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21
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Alonso MP, Figueiredo ACA, Borges FO, Elizondo JI, Galvão RMO, Severo JHF, Usuriaga OC, Berni LA, Machida M. Comparative electron temperature measurements of Thomson scattering and electron cyclotron emission diagnostics in TCABR plasmas. Rev Sci Instrum 2010; 81:10D529. [PMID: 21033884 DOI: 10.1063/1.3494379] [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] [Indexed: 05/30/2023]
Abstract
We present the first simultaneous measurements of the Thomson scattering and electron cyclotron emission radiometer diagnostics performed at TCABR tokamak with Alfvén wave heating. The Thomson scattering diagnostic is an upgraded version of the one previously installed at the ISTTOK tokamak, while the electron cyclotron emission radiometer employs a heterodyne sweeping radiometer. For purely Ohmic discharges, the electron temperature measurements from both diagnostics are in good agreement. Additional Alfvén wave heating does not affect the capability of the Thomson scattering diagnostic to measure the instantaneous electron temperature, whereas measurements from the electron cyclotron emission radiometer become underestimates of the actual temperature values.
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Affiliation(s)
- M P Alonso
- Associação EURATOM/IST, Instituto de Plasmas e Fusão Nuclear-Laboratório Associado, Instituto Superior Técnico, P-1049-001 Lisboa, Portugal.
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22
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Muraoka Y, Kurita M, Machida M, Matsuura D, Uemura O, Mizuno K, Yamaguchi T. P26-18 Development of slim design integrated volitional control electrical stimulator. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61067-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: 11/26/2022]
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23
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Machida M, Takemasa T. Ibuprofen administration during endurance training cancels running-distance-dependent adaptations of skeletal muscle in mice. J Physiol Pharmacol 2010; 61:559-563. [PMID: 21081799] [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] [Received: 02/01/2010] [Accepted: 09/24/2010] [Indexed: 05/30/2023]
Abstract
Exercise training induces many adaptations in skeletal muscle, representative examples of which include an increase in the IIa myofibre and an increase in the capillary-to-fibre ratio (C:F ratio). Moreover, these phenomena are thought to be dependent on running distance. Ibuprofen is one non-steroidal anti-inflammatory drug that is often used as an analgesic, but its effect on skeletal muscle adaptation during endurance training is unclear. In the present study, therefore, we administered ibuprofen to mice during running wheel exercise for four weeks, and examined its effects on the increase in the IIa myofibre and the C:F ratio in skeletal muscle. We observed a significant increase of the IIa myofibre and C:F ratio even in the presence of ibuprofen. Moreover, in untreated mice, there was a significant positive and strong correlation between these parameters and running distance. These results indicate that the increase in the IIa myofibre and the C:F ratio in skeletal muscle usually depend on running distance. Interestingly, we observed no significant correlation between these parameters and running distance in ibuprofen-administered mice. Moreover, we found no significant increase of these parameters when the running distance was significantly increased, in comparison with untreated mice. These results indicate that ibuprofen administration during endurance training cancels running-distance-dependent adaptations in skeletal muscle. This suggests that even if ibuprofen administration facilitates longer-distance running, no further effects of training on skeletal muscle can be expected.
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Affiliation(s)
- M Machida
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
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Hasnat M, Islam MA, Borhanuddin S, Chowdhury MU, Machida M. Influence of Rh on electrocatalytic reduction of NO3− and NO2− over Pt and Pd films. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcata.2009.10.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hinokuma S, Murakami K, Uemura K, Matsuda M, Ikeue K, Tsukahara N, Machida M. Arc Plasma Processing of Pt and Pd Catalysts Supported on γ-Al2O3 Powders. Top Catal 2009. [DOI: 10.1007/s11244-009-9387-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Hasnat M, Agui R, Hinokuma S, Yamaguchi T, Machida M. Different reaction routes in electrocatalytic nitrate/nitrite reduction using an H+-conducting solid polymer electrolyte. CATAL COMMUN 2009. [DOI: 10.1016/j.catcom.2009.01.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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27
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Lonart G, Tang X, Simsek-Duran F, Machida M, Sanford L. Corrigendum to “the role of active zone protein Rab3 interacting molecule 1 alpha in the regulation of norepinephrine release, response to novelty, and sleep”. Neuroscience 2008. [DOI: 10.1016/j.neuroscience.2008.07.076] [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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Okumura M, Yamada S, Taniguchi N, Machida M. Hole localization in the one-dimensional doped Anderson-Hubbard model. Phys Rev Lett 2008; 101:016407. [PMID: 18764134 DOI: 10.1103/physrevlett.101.016407] [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: 03/13/2008] [Indexed: 05/26/2023]
Abstract
We study an interplay of disorder and correlation in the one-dimensional hole-doped Hubbard-model with disorder (Anderson-Hubbard model) by using the density-matrix renormalization group method. Concentrating on the doped-hole-density profile, we find in a large U/t regime that the clean system exhibits a simple fluidlike behavior whereas finite disorders create locally Mott regions which expand their area with increasing the disorder strength contrary to the conventional sense. We propose that such an anomalous Mott phase formation assisted by disorder is easily observable in atomic Fermi gases by setting up the box-shape trap.
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Affiliation(s)
- M Okumura
- CCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan.
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Lonart G, Tang X, Simsek-Duran F, Machida M, Sanford LD. The role of active zone protein Rab3 interacting molecule 1 alpha in the regulation of norepinephrine release, response to novelty, and sleep. Neuroscience 2008; 154:821-31. [PMID: 18495360 DOI: 10.1016/j.neuroscience.2008.03.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [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: 02/20/2008] [Revised: 03/15/2008] [Accepted: 03/18/2008] [Indexed: 11/15/2022]
Abstract
Sleep mechanisms and synaptic plasticity are thought to interact to regulate homeostasis and memory formation. However, the influences of molecules that mediate synaptic plasticity on sleep are not well understood. In this study we demonstrate that mice lacking Rab3 interacting molecule 1 alpha (RIM1 alpha) (Rim1 alpha KO), a protein of the synaptic active zone required for certain types of synaptic plasticity and learning, had 53+/-5% less baseline rapid eye movement (REM) sleep compared with their wild type littermates. Also, compared with wild type littermates, exposure of the mice to an open field or to a novel object induced more robust and longer lasting locomotion suggesting altered habituation. This difference in exploratory behavior correlated with genotype specific changes in REM and deregulated release of norepinephrine in the cortex and basal amygdala of the Rim1 alpha KO mice. Also, moderate sleep deprivation (4 h), a test of the homeostatic sleep response, induced REM sleep rebound with different time course in Rim1 alpha KO and their wild type littermates. As norepinephrine plays an important role in regulating arousal and REM sleep, our data suggest that noradrenergic deficiency in Rim1 alpha KO animals impacts exploratory behavior and sleep regulation and contributes to impairments in learning.
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Affiliation(s)
- G Lonart
- Department of Pathology and Anatomy, Eastern Virginia Medical School, Norfolk, VA 23507, USA.
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Daltrini AM, Machida M. Multichannel detector for ion temperature determination in vacuum ultraviolet spectrum. Rev Sci Instrum 2007; 78:066101. [PMID: 17614645 DOI: 10.1063/1.2742811] [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] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A vacuum ultraviolet spectrometer equipped with a charge coupled device and an open multichannel plate has been used to analyze the temperature of carbon and oxygen ions in the NOVA-UNICAMP tokamak. The detection system was optimized and aligned to minimize the instrumental broadening. Also, higher order diffractions of the emissions were analyzed, resulting in lower experimental errors. The ion temperature was monitored during the tokamak discharge, presenting values between 30 and 70 eV.
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Affiliation(s)
- A M Daltrini
- Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, C.P. 6165, 13083-970 Campinas, Sao Paulo, Brazil
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Rokas A, Payne G, Fedorova ND, Baker SE, Machida M, Yu J, Georgianna DR, Dean RA, Bhatnagar D, Cleveland TE, Wortman JR, Maiti R, Joardar V, Amedeo P, Denning DW, Nierman WC. What can comparative genomics tell us about species concepts in the genus Aspergillus? Stud Mycol 2007; 59:11-7. [PMID: 18490942 PMCID: PMC2275189 DOI: 10.3114/sim.2007.59.02] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [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] [Indexed: 11/07/2022] Open
Abstract
Understanding the nature of species" boundaries is a fundamental question in evolutionary biology. The availability of genomes from several species of the genus Aspergillus allows us for the first time to examine the demarcation of fungal species at the whole-genome level. Here, we examine four case studies, two of which involve intraspecific comparisons, whereas the other two deal with interspecific genomic comparisons between closely related species. These four comparisons reveal significant variation in the nature of species boundaries across Aspergillus. For example, comparisons between A. fumigatus and Neosartorya fischeri (the teleomorph of A. fischerianus) and between A. oryzae and A. flavus suggest that measures of sequence similarity and species-specific genes are significantly higher for the A. fumigatus - N. fischeri pair. Importantly, the values obtained from the comparison between A. oryzae and A. flavus are remarkably similar to those obtained from an intra-specific comparison of A. fumigatus strains, giving support to the proposal that A. oryzae represents a distinct ecotype of A. flavus and not a distinct species. We argue that genomic data can aid Aspergillus taxonomy by serving as a source of novel and unprecedented amounts of comparative data, as a resource for the development of additional diagnostic tools, and finally as a knowledge database about the biological differences between strains and species.
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Affiliation(s)
- A Rokas
- Vanderbilt University, Department of Biological Sciences, Nashville, TN 37235, U.S.A
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Oyama M, Kino Y, Machida M, Onishi H, Yamamoto S. Postoperative management of the dorsal fracture-dislocation of the proximal interphalangeal joint. Tech Hand Up Extrem Surg 2006; 3:66-73. [PMID: 16609458 DOI: 10.1097/00130911-199903000-00010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- M Oyama
- Department of Restorative Neuromuscular Surgery and Rehabilitation, Tohoku University Graduate School of Medicine, Seiryo-machi, Sendai, Japan
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Uto H, Yoshioka E, Yanagisawa C, Kishimoto Y, Machida M, Hasagawa M, Saito H, Kiyose C, Shimokado K, Kondo K. We-P14:377 Palm tocotrienol suppresses insulin-induced adipogenesis. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81730-7] [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]
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Nagase T, Machida M, Yamagishi M. Failure of conformational turning and aortic fusion defect in the cultured mouse embryo under inhibition of Hedgehog signaling. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)84367-8] [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: 10/24/2022]
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Machida M, Koyama T. Structure of a quantized vortex near the BCS-BEC crossover in an atomic Fermi gas. Phys Rev Lett 2005; 94:140401. [PMID: 15904052 DOI: 10.1103/physrevlett.94.140401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2004] [Indexed: 05/02/2023]
Abstract
In order to clarify the structure of a singly quantized vortex in a superfluid fermion gas near the Feshbach resonance, we numerically solve the generalized Bogoliubov-de Gennes equation in the boson-fermion model. The superfluid gap, which contains contributions from both condensed fermion pairs and condensed bosons, is self-consistently determined, and the quasiparticle excitation levels bound in the vortex core are explicitly shown. We find that the boson condensate contributes to enhance the matter density depletion and the discreteness of localized quasiparticle spectrum inside the core. It is predicted that the matter density depletion and the discrete core levels are detectable in the vicinity of the BCS-Bose-Einstein condensation crossover point.
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Affiliation(s)
- M Machida
- CCSE, Japan Atomic Energy Research Institute, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan
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Kokubu M, Oda K, Machida M, Shinya N. New lidocaine ester derivatives with a prolonged anesthetic effect. J Anesth 2005; 4:270-4. [PMID: 15235985 DOI: 10.1007/s0054000040270] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/1989] [Accepted: 03/15/1990] [Indexed: 10/26/2022]
Abstract
In order to find a new long acting local anesthetic, methyl, ethyl, and butyl ester derivatives of lidocaine were synthesized in our laboratory. The topical anesthetic activity was studied with the effects on corneal reflex in rabbits, and the duration of action with those on the action potential of rabbit vagus nerve was studied in vitro. All drugs showed adequate topical anesthetic activities. The onset time to induce a complete blockage of the action potential in the excised vagus nerve was 97.1 +/- 6.3 s for lidocaine, 289.3 +/- 29.0 s for methyl ester, 186.3 +/- 18.4 s for ethyl ester, and 85.3 +/- 9.0 s for butyl ester. The mean duration of action, which was assessed as the time to recover from the complete block to 30% of control amplitude in a drug-free medium, was 32.5 +/- 3.1 min for lidocaine, 39.9 +/- 11.3 min for methyl ester, 68.2 +/- 4.2 min for ethyl ester, and 108.7 +/- 12.3 min for butyl ester. The differences in the duration of action between the ester derivatives and the original lidocaine were all statistically significant. The duration of action of all drugs studied paralleled with their protein binding capacities. These findings indicate the possibility that the ester derivatives studied, especially butyl ester, can be used as a long acting local anesthetic.
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Affiliation(s)
- M Kokubu
- Department of Dental Anesthesiology, Faculty of Dentistry, Higashi-Nippon-Gakuen University, Hokkaido, Japan
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Machida M, Yamada S, Ohashi Y, Matsumoto H. Novel superfluidity in a trapped gas of Fermi atoms with repulsive interaction loaded on an optical lattice. Phys Rev Lett 2004; 93:200402. [PMID: 15600902 DOI: 10.1103/physrevlett.93.200402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2004] [Indexed: 05/24/2023]
Abstract
We investigate a possibility of superfluidity in a trapped gas of Fermi atoms with a repulsive interaction in the presence of an optical lattice. Applying the exact diagonalization method to a one-dimensional Hubbard model including the trap potential, we find that, when the strength of the repulsive interaction exceeds a critical value, the binding energy of two Fermi atoms becomes negative below the half-filling case, indicating that an attractive interaction effectively works between Fermi atoms. In this case, a "Mott insulating core" appears in the center of the trap, where each site is occupied by one atom. The Cooper-pair correlation strongly develops between atoms in the left- and right-hand sides of this core.
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Affiliation(s)
- M Machida
- CCSE, Japan Atomic Energy Research Institute, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan
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Machida M, Lavollée M, Randrianjafisoa J, Laurent G, Nagoshi M, Okada K, Koyano I, Saito N. Probe of bending motion following the 1s−1π* excitation of N2O. J Chem Phys 2004; 120:3635-41. [PMID: 15268525 DOI: 10.1063/1.1641783] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [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
The doubly degenerate core-excited Pi state of N2O splits into two due to the static Renner-Teller effect. The lower state, A1, has a bent stable geometry and the molecule excited to this state starts to deform itself toward this bent geometry. To probe the effect of the potential energy surfaces of the core-excited A1 states on the nuclear motion, we measure the momenta of the three atomic ions in coincidence by means of the ion momentum imaging technique. We find that the potential energy surface affects the molecular deformation significantly. N2O in the terminal N 1s(-1)3piA1 excited state is observed to be bent more than that in the central N 1s(-1)3piA1 excited state. This means that N2O in the terminal N 1s(-1)3piA1 excited state bends faster than that in the central N 1s(-1)3piA1 excited state. When the excitation energy is decreased within the 1s(-1)3pi resonances, the nuclear motion in the A1 states becomes faster. This is interpreted by the notion that the excitation occurs onto the steeper slope part of the potential energy surface of the excited state for the lower excitation energy. The branching ratio of the A1 excitation increases with the decrease in the excitation energy.
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Affiliation(s)
- M Machida
- Department of Materials Science, Himeji Institute of Technology, Kamigori, Hyogo 678-1297, Japan
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Hamaue N, Minami M, Terado M, Hirafuji M, Endo T, Machida M, Hiroshige T, Ogata A, Tashiro K, Saito H, Parvez SH. Comparative Study of the Effects of Isatin, an Endogenous MAO-Inhibitor, and Selegiline on Bradykinesia and Dopamine Levels in a Rat Model of Parkinson's Disease Induced by the Japanese Encephalitis Virus. Neurotoxicology 2004; 25:205-13. [PMID: 14697895 DOI: 10.1016/s0161-813x(03)00100-1] [Citation(s) in RCA: 37] [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: 11/18/2022]
Abstract
We previously reported that exogenously administered isatin, an endogenous monoamine oxidase (MAO) inhibitor, significantly increased acetylcholine (ACh) and dopamine (DA) levels in the rat striatum. Selegiline [(-)-deprenil] was developed as a MAO-B inhibitor more than 30 years ago and widely used in the treatment of Parkinson's disease. Effects of isatin or selegiline were investigated in Japanese encephalitis virus (JEV)-induced post-encephalitic parkinsonism rats by a pole test for detecting motor activity and by the determination of biogenic amine levels. Motor activity of JEV-induced rats receiving isatin (100 mg/kg per day for 1 week, i.p.) or selegiline (0.2 mg/kg per day for 1 week, i.p.) was significantly improved compared with that of untreated JEV-infected rats. Both isatin and selegiline prevented the decrease in striatal DA levels in JEV-rats. The increased turnover of DA (DOPAC/DA) induced by JEV was significantly inhibited by isatin, but not by selegiline. These results suggested that exogenously administered isatin and selegiline can improve JEV-induced parkinsonism by increasing DA concentrations in the striatum.
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Affiliation(s)
- N Hamaue
- The Research Institute of Personalized Health Sciences, Health Sciences University of Hokkaido, 061-0293 Ishikari-Tobetsu, Japan
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Gad M, Mizutani W, Machida M, Ishikawa M. Method for stretching DNA molecules on mica surface in one direction for AFM imaging. Nucleic Acids Symp Ser 2003:215-6. [PMID: 12903345 DOI: 10.1093/nass/44.1.215] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
An efficient method was developed to stretch DNA molecules on an atomically flat surface for AFM imaging. This method involves anchoring DNA molecules from their 5' ends to amino silanized mica surfaces. N-Succinimidyl6-[3'-(2-pyridyldithio) propionamido]hexanoate (LC-SPDP), a heterobifunctional cross-linker with a flexible spacer arm was used for this purpose. The immobilization process was carried out by introducing a thiol group to the 5' end of DNA by PCR. Thiolated molecules were then reacted with the cross linker to conjugate with its 2-pyridyl disulphide group via sulfhydryl exchange. The resulting complex was deposited on amino silanized mica where NHS-ester moiety of the cross linker reacted with the primary amino group on the surface. Samples were washed by a current of water and dried by an air jet in one direction parallel to the surface. DNA molecules were shown to be fully stretched in one direction on imaging them by AFM.
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Affiliation(s)
- M Gad
- Joint Research Center for Atom Technology (JRCAT), Angstrom Technology Partnership (ATP), 1-1-4 Higashi, Tsukuba, Ibaraki 305-0046, Japan
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Ueda K, De Fanis A, Saito N, Machida M, Kubozuka K, Chiba H, Muramatu Y, Sato Y, Czasch A, Jaguzki O, Dörner R, Cassimi A, Kitajima M, Furuta T, Tanaka H, Sorensen S, Okada K, Tanimoto S, Ikejiri K, Tamenori Y, Ohashi H, Koyano I. Nuclear motion and symmetry breaking of the B 1s-excited BF3 molecule. Chem Phys 2003. [DOI: 10.1016/s0301-0104(02)00903-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Sato S, Kajiyama Y, Kuniyasu T, Machida M, Ouchi K, Sakai N, Sakamoto S, Iwanuma Y, Kamano T, Okamura S, Nagahama A, Tsurumaru M. Successfully treated case of cervical abscess and mediastinitis due to esophageal perforation after gastrointestinal endoscopy. Dis Esophagus 2003; 15:250-2. [PMID: 12445000 DOI: 10.1046/j.1442-2050.2002.00253.x] [Citation(s) in RCA: 6] [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: 12/11/2022]
Abstract
Perforations of the esophagus are uncommon complications of flexible gastrointestinal endoscopy. Perforations after endoscopy are likely to occur in the cervical esophagus, where fiber insertion is difficult anatomically. The diagnosis should be made as soon as possible, because mediastinitis and sepsis frequently develop following esophageal perforations. The surgical strategies are dependent on the location of the perforations and the condition of the patients. For a successful outcome, surgery is a preferred treatment for most perforation cases, and non-operative treatment, such as antibiotics, parental nutrition, and no food intake by mouth, should be applied carefully.
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Affiliation(s)
- S Sato
- First Department of Surgery, Juntendo University School of Medicine, Ouji Hospital, Tokyo, Japan.
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Abstract
Paramagnetic beads have the superior advantages of easy separation and resuspension by controlling the magnetic filed. Previously, we have developed Magtration technology to automate paramagnetic bead handling and have built several automated instruments that handle 1-12 samples simultaneously. To achieve more high-throughput sample processing, two types of a 96-arrayed Integrated Magtration Unit (IMU) were developed, one installed with electromagnets and the other with thin rod-shaped magnets made of neodymium. A multipurpose robot (SX-96GC) equipped with the IMU was also developed for fully automatic processing of 96 samples in parallel. The cleanup of dye-terminator sequencing products was performed using the robot installed with the permanent magnet version of IMU. The results had quality comparable to those by the same protocol in manual handling or to those by the conventional protocols. The robot processed 96 samples in a microplate within 30 min. The protocol that can purify 384 samples within 1 h by processing two microplates concurrently was successfully designed.
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Machida M, Koyama T. Friedel oscillation in charge profile and position dependent screening around a superconducting vortex core. Phys Rev Lett 2003; 90:077003. [PMID: 12633266 DOI: 10.1103/physrevlett.90.077003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2002] [Indexed: 05/24/2023]
Abstract
We calculate microscopically the charge distribution around a vortex in type II superconductors by solving the Bogoliubov-de Gennes equation and the Poisson equation simultaneously. Our calculations show that the charge density depletion occurs in the vortex center and the Friedel oscillation appears over the coherence length when k(F)xi is small. We also calculate the density-density correlation function K(r,r(')) as a function of two spatial variables, r and r('), and find that K(r,r(')) is strongly dependent on the distance from the vortex center. We clarify the spatial dependent screening properties on the basis of the correlation function in the core region.
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Affiliation(s)
- M Machida
- CCSE, Japan Atomic Energy Research Institute, Ueno Sumitomo Building 8, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan
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Machida M. Dynamical matching of Josephson vortex lattice with sample edge in layered high-Tc superconductors: origin of the periodic oscillation of flux flow resistance. Phys Rev Lett 2003; 90:037001. [PMID: 12570517 DOI: 10.1103/physrevlett.90.037001] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2001] [Indexed: 05/24/2023]
Abstract
We numerically investigate Josephson vortex flow states in layered high-T(c) superconductors motivated by a recent experimental observation for accurate periodic magnetic field dependences of the Josephson vortex flow resistance over a wide range of magnetic field (0.5-4.0 T). We confirm in our mesoscale simulations that dynamical matching of Josephson vortex lattice with sample edge is responsible for the periodic dependence. The present simulations reveal that the Josephson vortex lattice flow speed is particularly suppressed when the moment of vortex entry matches that of vortex escape. Thus, the possible matching situations are taken into account and the observed periodicity is successfully explained.
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Affiliation(s)
- M Machida
- CCSE, Japan Atomic Energy Research Institute, 6-9-3 Higashi-Ueno, Taito-ku Tokyo 110-0015, Japan
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De Fanis A, Saito N, Pavlychev AA, Ladonin DY, Machida M, Kubozuka K, Koyano I, Okada K, Ikejiri K, Cassimi A, Czasch A, Dörner R, Chiba H, Sato Y, Ueda K. Symmetry-dependent multielectron excitations near the C 1s ionization threshold and distortion of the shape resonance in CO(2). Phys Rev Lett 2002; 89:023006. [PMID: 12096995 DOI: 10.1103/physrevlett.89.023006] [Citation(s) in RCA: 5] [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: 01/17/2002] [Indexed: 05/23/2023]
Abstract
Satellite bands accompanying the C 1s photoline for the CO2 molecule parallel to the electric vector of the incident radiation E are found to be more intense than those for CO2 perpendicular to E in the shape resonance region. This indicates that multielectron excitations are caused in part by the interaction of the outgoing C 1s photoelectron with the valence electrons. The photoelectron-impact valence excitations couple with the C 1s single-hole ionization and distort the shape resonance significantly. We assign the broad resonance at approximately 312 eV to a distorted Sigma(u) shape resonance.
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Affiliation(s)
- A De Fanis
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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Machida M, Watanabe T, Ikeda S, Kijima T. A dual-bed lean deNO catalyst system consisting of NO–H2–O2 reaction and subsequent N2O decomposition. CATAL COMMUN 2002. [DOI: 10.1016/s1566-7367(02)00091-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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