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Iwata S, Yamaguchi S, Kimura S, Hattori S, Sasahara J, Akagi R, Amaha K, Atsuta T, Kanzaki N, Noguchi K, Okada H, Omodani T, Ohuchi H, Sato H, Takada S, Takahashi K, Yamada Y, Yasui T, Yokoe T, Fukushima S, Iida D, Ono Y, Kawasaki Y, Shiko Y, Sasho T, Ohtori S. Do standardization of the procedure reduce measurement variability of the sonographic anterior drawer test of the ankle? J Orthop Sci 2023:S0949-2658(23)00320-2. [PMID: 37996296 DOI: 10.1016/j.jos.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/04/2023] [Accepted: 11/09/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND In quantitative ankle stress sonography, different examiners use different techniques, which may cause measurement variability. This study aimed to clarify whether standardizing stress sonography techniques reduces variability in the quantitative measurement of anterior talofibular ligament length change. METHODS Fourteen examiners with a mean ultrasound experience of 8.7 years participated in this study. Each examiner performed stress ultrasonography of the ankle using their preferred method on one patient with an intact anterior talofibular ligament (Patient 1) and on two patients with chronic ankle instability (Patient 2 and 3). Changes in the ligament length between the resting and stressed positions were determined. A consensus meeting was then conducted to standardize the sonographic technique, which was used by the examiners during a repeat stress sonography on the same patients. The variance and measured values were compared between the preferred and standardized techniques using F-tests and paired t-tests, respectively. RESULTS At a consensus meeting, a sonographic technique in which the examiner pushed the lower leg posteriorly against the fixed foot was adopted as the standardized technique. In Patient 1, the change in the anterior talofibular ligament length was 0.4 (range, -2.3-1.3) mm and 0.6 (-0.6-1.7) mm using the preferred and standardized techniques, respectively, with no significant difference in the variance (P = 0.51) or the measured value (P = 0.52). The length changes in Patient 2 were 2.0 (0.3-4.4) mm and 1.7 (-0.9-3.8) mm using the preferred and standardized techniques, respectively. In Patient 3, the length changes were 1.4 (-2.7-7.1) mm and 0.7 (-2.0-2.3) mm. There were no significant differences between the techniques in either patient group. CONCLUSION Variability in the quantitative measurement of ankle stress sonography was not reduced despite the standardization of the technique among examiners. Hence, comparing the measured values between different examiners should be avoided.
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Affiliation(s)
- Shuhei Iwata
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Satoshi Yamaguchi
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan; Graduate School of Global and Transdisciplinary Studies, Chiba University, Chiba, Japan.
| | - Seiji Kimura
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Soichi Hattori
- Department of Sports Medicine, Kameda Medical Center, Chiba, Japan
| | - Jun Sasahara
- Institute of Sports Science & Medicine, Teikyo University, Tokyo, Japan
| | - Ryuichiro Akagi
- Department of Orthopaedic Surgery, Oyumino Central Hospital, Chiba, Japan
| | - Kentaro Amaha
- Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan
| | | | - Noriyuki Kanzaki
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Hyogo, Japan
| | - Koji Noguchi
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Kurume General Hospital, Fukuoka, Japan
| | | | | | - Hiroshi Ohuchi
- Department of Sports Medicine, Kameda Medical Center, Chiba, Japan
| | - Hiroyuki Sato
- Department of Sports Medicine, Kameda Medical Center, Chiba, Japan
| | - Satoshi Takada
- Department of Orthopaedic Surgery, Dokkyo Medical University, Tochigi, Japan
| | - Kenji Takahashi
- Sports Medicine & Joint Center, Funabashi Orthopaedic Hospital, Chiba, Japan
| | - Yuichi Yamada
- Institute for Integrated Sports Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Kanagawa, Japan
| | - Takuji Yokoe
- Division of Orthopaedic Surgery, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Shun Fukushima
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Daisuke Iida
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Yoshimasa Ono
- Department of Orthopaedic Surgery, Numazu City Hospital, Shizuoka, Japan
| | - Yohei Kawasaki
- Biostatistics Section, Clinical Research Center, Chiba University Hospital, Chiba, Japan
| | - Yuki Shiko
- Biostatistics Section, Clinical Research Center, Chiba University Hospital, Chiba, Japan
| | - Takahisa Sasho
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan; Center for Preventive Medical Sciences, Chiba University, Chiba, Japan
| | - Seiji Ohtori
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
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Ishimaru T, Okawara M, Tateishi S, Yasui T, Horie S, Fujino Y. Impact of menopausal symptoms on presenteeism in Japanese women. Occup Med (Lond) 2023; 73:404-409. [PMID: 37494697 DOI: 10.1093/occmed/kqad087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023] Open
Abstract
BACKGROUND Menopausal symptoms are common among middle-aged women. Working women with severe menopausal symptoms are more likely to experience presenteeism-a condition where employees continue to work despite feeling unwell. However, it remains unclear as to which specific symptoms women experience during the menopausal transition and postmenopausal periods that primarily contribute to presenteeism. AIMS To evaluate the associations between types of menopausal symptoms and presenteeism among Japanese women. METHODS A cross-sectional study of 4000 women aged 40-59 years who were currently working was conducted in Japan in September 2022. We used an online self-administered questionnaire that included items on demographic characteristics, the Menopause Rating Scale for measuring menopausal symptoms and the Work Functioning Impairment Scale for measuring presenteeism. Logistic regression analysis was performed. RESULTS Women with severe overall menopausal symptoms had 12.18-fold (95% confidence interval [CI] 9.09-16.33, P < 0.001) increased odds of presenteeism compared with those without symptoms. Participants with psychological symptoms also had significantly higher presenteeism (severe: odds ratio: 9.18, 95% CI 6.60-12.78, P < 0.001). However, after controlling for psychological symptoms, there were no significant associations between somatic and urogenital symptoms and presenteeism. CONCLUSIONS The results indicate that menopausal symptoms, especially psychological symptoms, have a significant impact on presenteeism among Japanese women. Organizations need to address menopausal symptoms in the workplace, with an emphasis on reducing work-related stress for women with menopausal symptoms.
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Affiliation(s)
- T Ishimaru
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - M Okawara
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - S Tateishi
- Disaster Occupational Health Center, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - T Yasui
- Department of Reproductive and Menopausal Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - S Horie
- Department of Urology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Y Fujino
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
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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.
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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
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Yasui T, Higuchi J, Kasai T, Yamada A, Kobata T, Hasebe K, Hara M. Association of Preoperative Depression Score With Outcomes of Transfibular Total Ankle Arthroplasty. J Foot Ankle Surg 2023; 62:807-811. [PMID: 37086907 DOI: 10.1053/j.jfas.2023.04.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 03/29/2023] [Accepted: 04/11/2023] [Indexed: 04/24/2023]
Abstract
Favorable short-term results of transfibular total ankle arthroplasty have been reported in several studies; however, the factors affecting these results have not been elucidated. This study aimed to determine whether preoperative depression affects the outcome of transfibular total ankle arthroplasty and whether depression changes with surgery. Scores from the Japanese Society of Surgery of the Foot Ankle/Hindfoot scale (JSSF scale), Self-Administered Foot Evaluation Questionnaire (SAFE-Q), Hospital Anxiety and Depression Scale (HADS), and Timed Up & Go test (TUG) were collected preoperatively, at 6 months, and at 1 year postoperatively from 20 patients. Eighteen patients were diagnosed with osteoarthritis and 2 patients with rheumatoid arthritis. The mean age of the patients was 75 years. Patients were divided into 2 groups: those with preoperative HADS depression scores above the median (higher depression score group) and below the median (lower depression score group), and intergroup comparisons were made. No significant differences were observed in the JSSF and TUG scores between the groups, both preoperatively and postoperatively. Meanwhile, the SAFE-Q pain subscale score was significantly lower in the higher depression score group than in the lower depression score group (median, 59 vs 90) 1 year postoperatively. There were no differences in the other SAFE-Q subscale scores between the groups. The results suggested that depressive tendencies did not affect postoperative functional results using objective assessment measures but had a negative impact on pain in subjective assessment measures.
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Affiliation(s)
- Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizunokuchi Hospital, Kawasaki-shi, Kanagawa, Japan.
| | - Junya Higuchi
- Department of Orthopaedic Surgery, Teikyo University Mizunokuchi Hospital, Kawasaki-shi, Kanagawa, Japan
| | - Taro Kasai
- Department of Orthopaedic Surgery, Teikyo University Mizunokuchi Hospital, Kawasaki-shi, Kanagawa, Japan; Department of Orthopaedic Surgery, Faculty of Medicine, the University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Atsuhisa Yamada
- Department of Orthopaedic Surgery, Teikyo University Mizunokuchi Hospital, Kawasaki-shi, Kanagawa, Japan
| | - Tomohiro Kobata
- Department of Rehabilitation Medicine, Teikyo University Mizonokuchi Hospital, Kawasaki-shi, Kanagawa, Japan
| | - Kiyotaka Hasebe
- Department of Rehabilitation Medicine, Teikyo University Mizonokuchi Hospital, Kawasaki-shi, Kanagawa, Japan
| | - Motohiko Hara
- Department of Rehabilitation, Teikyo University Mizonokuchi Hospital, Kawasaki-shi, Kanagawa, Japan
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Noguchi K, Yamaguchi S, Teramoto A, Amaha K, Kanzaki N, Tanaka H, Yasui T, Inaba Y. Reliability and validity of the Forgotten Joint Score-12 for total ankle replacement and ankle arthrodesis. PLoS One 2023; 18:e0286762. [PMID: 37315039 DOI: 10.1371/journal.pone.0286762] [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] [Received: 02/27/2023] [Accepted: 05/22/2023] [Indexed: 06/16/2023] Open
Abstract
OBJECTIVES This study evaluated the reliability and validity of the Forgotten Joint Score-12 (FJS-12)-a measure of patients' ability to forget their joints in daily life-in patients who underwent total ankle replacement (TAR) or ankle arthrodesis (AA). METHODS Patients who underwent TAR or AA were recruited from seven hospitals. The patients completed the Japanese version of FJS-12 twice, at an interval of two weeks, at a minimum of one year postoperatively. Additionally, they answered the Self-Administered Foot Evaluation Questionnaire and EuroQoL 5-Dimension 5-Level as comparators. The construct validity, internal consistency, test-retest reliability, measurement error, and floor and ceiling effects were evaluated. RESULTS A total of 115 patients (median age, 72 years), comprising 50 and 65 patients in the TAR and AA groups respectively, were evaluated. The mean FJS-12 scores were 65 and 58 for the TAR and AA groups, respectively, with no significant difference between groups (P = 0.20). Correlations between the FJS-12 and Self-Administered Foot Evaluation Questionnaire subscale scores were good to moderate. The correlation coefficient ranged from 0.39 to 0.71 and 0.55 to 0.79 in the TAR and AA groups, respectively. The correlation between the FJS-12 and EuroQoL 5-Dimension 5-Level scores was poor in both groups. The internal consistency was adequate, with Cronbach's α greater than 0.9 in both groups. The intraclass correlation coefficients of test-retest reliability was 0.77 and 0.98 in the TAR and AA groups, respectively. The 95% minimal detectable change values were 18.0 and 7.2 points in the TAR and AA groups, respectively. No floor or ceiling effect was observed in either group. CONCLUSIONS The Japanese version of FJS-12 is a valid and reliable questionnaire for measuring joint awareness in patients with TAR or AA. The FJS-12 can be a useful tool for the postoperative assessment of patients with end-stage ankle arthritis.
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Affiliation(s)
- Koji Noguchi
- Department of Orthopaedic Surgery, Kurume University School of Medicine, Kurume-shi, Fukuoka, Japan
- Japan Community Health care Organization Kurume General Hospital, Kurume-shi, Fukuoka, Japan
| | - Satoshi Yamaguchi
- Graduate School of Global and Transdisciplinary Studies, Chiba University, Chiba-shi, Chiba, Japan
- Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba-shi, Chiba, Japan
| | - Atsushi Teramoto
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo-shi, Hokkaido, Japan
| | - Kentaro Amaha
- Department of Orthopaedic Surgery, St. Luke's International Hospital, Chuo-ku, Tokyo, Japan
| | - Noriyuki Kanzaki
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe-shi, Hyogo, Japan
| | - Hirofumi Tanaka
- Hyakutake Orthopedic Surgery and Sports Clinic, Saga-shi, Saga, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Kawasaki-shi, Kanagawa, Japan
| | - Yosuke Inaba
- Biostatistics Section, Chiba University Hospital Clinical Research Center, Chiba-shi, Chiba, Japan
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Mikami Y, Yamaguchi S, Teramoto A, Amaha K, Yasui T, Kurashige T, Nagashima R, Endo J, Takakura Y, Noguchi K, Sadamasu A, Kimura S. Impact of pain in other body regions on the foot-specific quality of life in patients with hallux valgus. Mod Rheumatol 2023; 33:428-433. [PMID: 35106594 DOI: 10.1093/mr/roac003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 12/12/2021] [Accepted: 01/04/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES The purpose of this study was to clarify the prevalence of pain outside the foot, and to determine the associations of pain outside the foot with foot-specific quality of life (QOL) in patients with hallux valgus. METHODS Patients scheduled to undergo hallux valgus surgery were recruited. Patients answered whether they experienced disabling pain in 13 body regions other than the foot. Foot-specific QOLwas assessed using the Self-Administered Foot Evaluation questionnaire (SAFE-Q). Foot pain was quantified using the visual analogue scale (VAS). Patient characteristics, including age, sex, comorbidity, anxiety, and depression, were also surveyed. The association between pain elsewhere and the SAFE-Q and pain VAS scores were assessed using univariate and multivariate analyses. RESULTS Of 102 patients, 55 (54%) experienced pain other than the foot. All SAFE-Q subscale scores were lower, and pain VAS was higher in patients with pain elsewhere than in patients without. In the multivariate analysis, an increase in the number of pain regions was independently associated with a decrease in SAFE-Q scores and an increase in pain VAS. CONCLUSION More than half of the patients with hallux valgus experienced pain elsewhere. The presence of pain elsewhere was associated with poorer foot-specific QOL and severer foot pain.
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Affiliation(s)
- Yukio Mikami
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Satoshi Yamaguchi
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan.,Graduate School of Global and Transdisciplinary Studies, Chiba University, Chiba, Japan
| | - Atsushi Teramoto
- Department of Orthopaedic Surgery, Sapporo Medical University, Hokkaido, Japan
| | - Kentaro Amaha
- Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Kanagawa, Japan
| | - Toshinori Kurashige
- Department of Orthopaedic Surgery, Chiba Aiyukai Memorial Hospital, Chiba, Japan
| | | | - Jun Endo
- Department of Orthopaedic Surgery, Yoh memorial Hospital, Chiba, Japan
| | | | - Koji Noguchi
- Department of Orthopaedic Surgery, Kurume General Hospital, Fukuoka, Japan
| | - Aya Sadamasu
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Seiji Kimura
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
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Taguchi K, Hamamoto S, Sugino T, Yanase T, Unno R, Okada A, Yasui T. Evaluating learning curve for renal access during mini-ECIRS: Robotic-assisted fluoroscopic-guidance vs. ultrasound-guidance. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00984-3] [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: 02/12/2023]
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Kato T, Mizuno K, Nishio H, Matsumoto D, Kamisawa H, Kurokawa S, Nakane A, Maruyama T, Yasui T, Hayashi Y. Dysfunction of the blood–testis barrier in undescended testes and the role of androgens in the blood–testis barrier composition. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00244-0] [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: 02/12/2023]
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Etani T, Morikawa T, Gonda M, Aoki M, Nagai T, Iida K, Taguchi K, Naiki T, Hamamoto S, Okada A, Kawai N, Yasui T. Usefulness of stone culture in endoscopic combined intra-renal surgery. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00781-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Yasui T, Nishiyama K, Itoyama S, Iwamoto A, Kogo R. Two cases of cervical esophageal perforation treated by surgery. Clin Case Rep 2022; 10:e6157. [PMID: 36177082 PMCID: PMC9474901 DOI: 10.1002/ccr3.6157] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 06/06/2022] [Accepted: 07/16/2022] [Indexed: 11/11/2022] Open
Abstract
Cervical esophageal perforation is rare, but it is associated with high mortality. We describe two patients with cervical esophageal perforation that required surgical treatment. In both cases, good outcomes were evenly achieved, despite the presence of risk factors. A prompt diagnosis and treatment with collaboration between a surgeon and a gastroenterologist are important.
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Affiliation(s)
- Tetsuro Yasui
- Division of Otolaryngology Yamaguchi Red Cross Hospital Yamaguchi Japan
- Otolaryngology Kyushu University Yamaguchi Japan
| | - Kazuo Nishiyama
- Division of Otolaryngology Yamaguchi Red Cross Hospital Yamaguchi Japan
| | - Shinsaku Itoyama
- Division of Otolaryngology Yamaguchi Red Cross Hospital Yamaguchi Japan
| | - Asano Iwamoto
- Division of Otolaryngology Yamaguchi Red Cross Hospital Yamaguchi Japan
| | - Ryunosuke Kogo
- Division of Otolaryngology Yamaguchi Red Cross Hospital Yamaguchi Japan
- Otolaryngology Kyushu University Yamaguchi Japan
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Kasai T, Higashida T, Hayashi T, Yasui T. Pseudoaneurysm of the Peroneal Artery After Ankle Arthrodesis Treated by Endovascular Coil Embolization: A Case Report. JBJS Case Connect 2022; 12:01709767-202209000-00022. [PMID: 35977044 DOI: 10.2106/jbjs.cc.22.00206] [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: 06/15/2023]
Abstract
CASE Pseudoaneurysms of the peroneal artery around the ankle joint have rarely been reported. We present the case of a 64-year-old man with a pseudoaneurysm of the anterior perforating branch of the peroneal artery associated with a screw inserted from the anterolateral distal tibia during ankle arthrodesis. Endovascular treatment with selective catheterization and coil embolization was successfully performed. The ankle joint achieved bone union without delay, and the pseudoaneurysm did not recur at the 18-month follow-up. CONCLUSION This is the first report describing a pseudoaneurysm of the peroneal artery after ankle arthrodesis. Successful outcomes can be achieved by endovascular treatment.
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Affiliation(s)
- Taro Kasai
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Takatsu-ku, Kawasaki, Kanagawa, Japan
| | - Tomohiko Higashida
- Department of Radiology, Teikyo University Mizonokuchi Hospital, Takatsu-ku, Kawasaki, Kanagawa, Japan
| | - Takaki Hayashi
- Department of Radiology, Teikyo University Mizonokuchi Hospital, Takatsu-ku, Kawasaki, Kanagawa, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Takatsu-ku, Kawasaki, Kanagawa, Japan
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Yamada A, Yasui T, Miki Y, Nakamura S. Subtrochanteric Fracture after Internal Fixation of Femoral Neck Fracture Using the Hansson Pinloc System: A Case Report. J Orthop Case Rep 2022; 12:86-89. [PMID: 37056596 PMCID: PMC10088388 DOI: 10.13107/jocr.2022.v12.i12.3476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 10/07/2022] [Indexed: 03/19/2023] Open
Abstract
Introduction: Hansson Pinloc system consists of three pins locking into a plate. In biomechanical trials, the novel plate design with its pin configuration enhanced torsional stability. Hansson Pinloc has been used for femoral neck fracture in some countries including Sweden and Japan. Recently, the outcome of a randomized clinical study comparing Hansson Pinloc and conventional Hansson pins was published. However, subtrochanteric fracture after internal fixation using Hansson Pinloc has not been reported in the English literature including the above report. Only several Japanese literatures reported some cases with this post-operative complication. We present a case with subtrochanteric fracture after internal fixation using Hansson Pinloc. Case Report: Subtrochanteric fractures after internal fixation of femoral neck fractures are rare but severe complications. We present our experience of this complication after internal fixation using Hansson Pinloc system which is a new design implant for femoral neck fracture. A 67-year-old woman was diagnosed with a femoral neck fracture of Garden stage I after a fall. She underwent closed reduction and internal fixation using Hansson Pinloc system. At 4 weeks after surgery, she suffered subtrochanteric fracture without any episode of trauma. The patient underwent removal of the instrumentation and internal fixation with a long femoral nail. We get in trouble with removing Hansson Pinloc system due to secondary fracture, and of bone defect. 9 weeks after the second surgery, the patient could get bone union and walk using double T-canes. Conclusion: Surgeons should be cognizant of this post-operative complication before using this system. In osteosynthesis of the femoral neck fracture using Hansson Pinloc, we should keep in mind that subtrochanteric fracture is a possible post-operative complication. Keywords: Femoral neck fracture, Osteosynthesis, Post-operative complication, Subtrochanteric fracture
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13
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Wakizono T, Nakashima H, Yasui T, Noda T, Aoyagi K, Okada K, Yamada Y, Nakagawa T, Nakashima K. Growth factors with valproic acid restore injury-impaired hearing by promoting neuronal regeneration. JCI Insight 2021; 6:139171. [PMID: 34806649 PMCID: PMC8663787 DOI: 10.1172/jci.insight.139171] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Spiral ganglion neurons (SGNs) are primary auditory neurons in the spiral ganglion that transmit sound information from the inner ear to the brain and play an important role in hearing. Impairment of SGNs causes sensorineural hearing loss (SNHL), and it has been thought until now that SGNs cannot be regenerated once lost. Furthermore, no fundamental therapeutic strategy for SNHL has been established other than inserting devices such as hearing aids and cochlear implants. Here we show that the mouse spiral ganglion contains cells that are able to proliferate and indeed differentiate into neurons in response to injury. We suggest that SRY-box transcription factor 2/SRY-box transcription factor 10-double-positive (Sox2/Sox10-double-positive) Schwann cells sequentially started to proliferate, lost Sox10 expression, and became neurons, although the number of new neurons generated spontaneously was very small. To increase the abundance of new neurons, we treated mice with 2 growth factors in combination with valproic acid, which is known to promote neuronal differentiation and survival. This treatment resulted in a dramatic increase in the number of SGNs, accompanied by a partial recovery of the hearing loss induced by injury. Taken together, our findings offer a step toward developing strategies for treatment of SNHL.
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Affiliation(s)
- Takahiro Wakizono
- Department of Stem Cell Biology and Medicine and.,Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | | | - Tetsuro Yasui
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Teppei Noda
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Kei Aoyagi
- Department of Stem Cell Biology and Medicine and.,Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Kanako Okada
- Department of Stem Cell Biology and Medicine and
| | - Yasuhiro Yamada
- Division of Stem Cell Pathology, Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan
| | - Takashi Nakagawa
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
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14
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Taguchi K, Yamashita S, Hamamoto S, Deguchi R, Kawase K, Okada T, Sugino T, Unno R, Kato T, Ando R, Okada A, Kohjimoto Y, Hara I, Yasui T. Ureteroscopy-assisted versus conventional ultrasound-guided renal access for miniaturised endoscopic combined intrarenal surgery: A multicentre comparative study. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00677-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Nagai T, Taguchi K, Isobe T, Matsuyama N, Hattori T, Unno R, Kato T, Etani T, Hamakawa T, Fujii Y, Ikegami Y, Kamiya H, Hamamoto S, Nakane A, Ando R, Maruyama T, Okada A, Kawai N, Yasui T. A multicenter, propensity score-matched retrospective study of preventing postoperative infection in robotic and laparoscopic minimally invasive surgeries; double-versus single-gloving. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00561-3] [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: 10/20/2022]
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16
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Taguchi K, Unno R, Sugino T, Kawase K, Yang H, Hamamoto S, Okada A, Stoller M, Chi T, Yasui T. Fatty acid binding protein 4 attenuates macrophage and tubular cells crystal phagocytosis to drive renal calcium oxalate stone development. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00612-6] [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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17
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Takeda R, Isawa K, Matsumoto T, Tanaka S, Yasui T. Surgical Treatment for Toe Deformities in Stiff-Person Syndrome: A Case Report. JBJS Case Connect 2021; 10:e2000008. [PMID: 32910566 DOI: 10.2106/jbjs.cc.20.00008] [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: 11/14/2022]
Abstract
CASE Stiff-person syndrome is a rare neurological disorder characterized by rigidity and painful spasms of the trunk and limbs, and patients sometimes have difficulty in walking due to rigid toe deformities. This is a case report of a 76-year-old woman suffering from stiff-person syndrome with painful rigid toe deformities regained walking ability after metatarsal osteotomy and cutting of the toe extensors for all toes in the left foot. CONCLUSION For patients with stiff-person syndrome, surgical intervention is a powerful treatment option when they have developed rigid and painful toe deformities despite adequate pharmacological treatment.
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Affiliation(s)
- Ryutaro Takeda
- 1Department of Orthopaedic Surgery, The University of Tokyo, Tokyo, Japan 2Department of Orthopaedics, Toranomon Hospital, Tokyo, Japan 3Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Kanagawa, Japan
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18
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Takeda R, Yasui T, Kasai T, Matsumoto T, Matsubara T, Tanaka S. Surgical Treatment of Pathological Tibial Shaft Fracture in Adult Patient With Gnathodiaphyseal Dysplasia: A Case Report. JBJS Case Connect 2021; 11:01709767-202106000-00011. [PMID: 33826556 DOI: 10.2106/jbjs.cc.21.00005] [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: 06/12/2023]
Abstract
CASE Gnathodiaphyseal dysplasia is a generalized skeletal syndrome characterized by frequent bone fractures in childhood, sclerosis and bowing of tubular bones, and cemento-osseous lesions of the jawbones. We present the case of a 53-year-old man with gnathodiaphyseal dysplasia who presented with pathological fracture of the tibial shaft. Internal fixation with the Ender nail was successfully performed with 2 years of follow-up. CONCLUSION This is the first report describing the treatment of fracture in an adult patient with gnathodiaphyseal dysplasia. Internal fixation with the Ender nail was effective for the tubular bone with deformity. Callus formation was observed without delay.
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Affiliation(s)
- Ryutaro Takeda
- Department of Orthopaedic Surgery, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Futago, Takatsu-ku, Kawasaki, Kanagawa, Japan
| | - Taro Kasai
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Futago, Takatsu-ku, Kawasaki, Kanagawa, Japan
| | - Takumi Matsumoto
- Department of Orthopaedic Surgery, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Takehiro Matsubara
- Department of Emergency and Critical Care Medicine, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
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Ono K, Ohashi S, Oka H, Kadono Y, Yasui T, Matsumoto T, Omata Y, Tanaka S. Evaluations of daily teriparatide using finite-element analysis over 12 months in rheumatoid arthritis patients. J Bone Miner Metab 2021; 39:270-277. [PMID: 32886175 DOI: 10.1007/s00774-020-01146-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 05/30/2020] [Accepted: 08/17/2020] [Indexed: 12/15/2022]
Abstract
INTRODUCTION The objective of this study was to quantitatively evaluate the effects of daily teriparatide on rheumatoid arthritis patients using predicted bone strength (PBS) assessed by quantitative computed tomography-based finite-element analysis (QCT/FEA) and using bone mineral density (BMD) assessed by dual-energy X-ray absorptiometry (DXA), and to prospectively investigate clinical determinants associated with PBS and BMD increases. MATERIALS AND METHODS Participants comprised 39 patients (mean age, 69 years; disease activity score assessing 28 joints with CRP, 3.0; previous vertebral fractures, 82%) enrolled in this study. BMD by DXA and PBS by QCT/FEA of lumbar spine (LS) and proximal femur were measured at baseline, and after 6 and 12 months. In the groups showing increases in these values, variables that may have affected these increases were evaluated using univariate logistic regression analysis. RESULTS Daily teriparatide treatment significantly increased not only LS BMD, but also LS PBS in RA patients with osteoporosis after both 6 and 12 months of treatment. Increases in N-terminal type I procollagen propeptide (PINP) at 1 and 3 months were significantly associated with increased LS PBS at 12 months according to univariate logistic regression analysis. The threshold value for increased PINP at 1 month for increased PBS at 12 months was 75 µg/L. CONCLUSIONS Increased LS PBS at 12 months was predicted by increased PINP at 1 month from baseline.
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Affiliation(s)
- Kumiko Ono
- Department of Joint Surgery, Research Hospital, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Satoru Ohashi
- Department of Orthopaedic Surgery, Sagamihara Hospital, National Hospital Organization, 18-1 Sakuradai, Minami-ku, Sagamihara-shi, Sagamihara, Kanagawa, 252-0315, Japan.
| | - Hiroyuki Oka
- Department of Medical Research and Management for Musculoskeletal Pain, Faculty of Medicine, 22nd Century Medical and Research Center, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yuho Kadono
- Department of Orthopaedic Surgery, Saitama Medical University Hospital, 38 Morohongo, Moroyama-cho, Iruma-gun, Saitama, 350-0495, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, 5-1-1 Futago, Takatsu-ku, Kawasaki-shi, Kawasaki, Kanagawa, 213-8507, Japan
| | - Takumi Matsumoto
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yasunori Omata
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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20
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Shimomura K, Yasui T, Teramoto A, Ozasa Y, Yamashita T, Iwasawa M. Time Course of Quality of Life Improvement Between Resection Arthroplasty and Metatarsophalangeal Joint-Preserving Forefoot Arthroplasty for Rheumatoid Arthritis. Foot Ankle Int 2021; 42:166-175. [PMID: 33155486 DOI: 10.1177/1071100720962096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Resection arthroplasty has long been a major treatment option for forefoot deformity caused by rheumatoid arthritis (RA). However, metatarsophalangeal (MTP) joint-preserving surgery is now surpassing classic resection arthroplasty. This study was performed to compare the postoperative results of these 2 operative methods. METHODS Fifty-one toes of 40 patients with RA who underwent resection arthroplasty (resection group) or MTP joint-preserving arthroplasty (preservation group) from 2014 to 2017 for forefoot deformity were followed up for >1 year and were retrospectively analyzed. In the preservation group, open reduction of joint dislocation was performed if needed, and the deformity was corrected by metatarsal shortening osteotomy. The mean follow-up period was 21 months. The Japanese Society for Surgery of the Foot (JSSF) scales (objective outcome measures), the Self-Administered Foot Evaluation Questionnaire (SAFE-Q) (subjective outcome measure), and radiographic indices were compared between the groups. The resection group and preservation group comprised 15 toes of 11 patients and 36 toes of 29 patients, respectively. RESULTS There were no significant differences in the preoperative radiographic indices, JSSF scales, or SAFE-Q results between the 2 groups. The preservation group showed better JSSF scores at the last follow-up (median hallux scale, 89 vs 74; median lesser scale, 87 vs 79). In the preservation group, the SAFE-Q scores gradually improved with time until 12 months postoperatively. In the resection group, the scores decreased 3 months postoperatively and then improved and reached a plateau 6 months postoperatively. At 12 months postoperatively, there was no significant difference in the SAFE-Q scores between the 2 groups. CONCLUSIONS MTP joint-preserving arthroplasty resulted in superior objective scores to resection arthroplasty in patients with RA forefoot deformity. Although the subjective scores did not differ between the groups at the last follow-up, the time course of postoperative quality of life improvement was different between the 2 surgeries. LEVEL OF EVIDENCE Level III, retrospective comparative study.
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Affiliation(s)
- Kota Shimomura
- Department of Orthopaedic Surgery, Sagamihara National Hospital, Sagamihara, Kanagawa, Japan.,Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Kanagawa, Japan
| | - Atsushi Teramoto
- Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Yasuhiro Ozasa
- Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Toshihiko Yamashita
- Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Mitsuyasu Iwasawa
- Department of Orthopaedic Surgery, Sagamihara National Hospital, Sagamihara, Kanagawa, Japan
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21
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Mizuno T, Hase E, Minamikawa T, Tokizane Y, Oe R, Koresawa H, Yamamoto H, Yasui T. Full-field fluorescence lifetime dual-comb microscopy using spectral mapping and frequency multiplexing of dual-comb optical beats. Sci Adv 2021; 7:eabd2102. [PMID: 33523842 PMCID: PMC7775765 DOI: 10.1126/sciadv.abd2102] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 11/09/2020] [Indexed: 05/30/2023]
Abstract
Fluorescence lifetime imaging microscopy (FLIM) is a powerful tool for quantitative fluorescence imaging because fluorescence lifetime is independent of concentration of fluorescent molecules or excitation/detection efficiency and is robust to photobleaching. However, since most FLIMs are based on point-to-point measurements, mechanical scanning of a focal spot is needed for forming an image, which hampers rapid imaging. Here, we demonstrate scan-less full-field FLIM based on a one-to-one correspondence between two-dimensional (2D) image pixels and frequency-multiplexed radio frequency (RF) signals. A vast number of dual-comb optical beats between dual optical frequency combs are effectively adopted for 2D spectral mapping and high-density frequency multiplexing in the RF region. Bimodal images of fluorescence amplitude and lifetime are obtained with high quantitativeness from amplitude and phase spectra of fluorescence RF comb modes without the need for mechanical scanning. The parallelized FLIM will be useful for rapid quantitative fluorescence imaging in life science.
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Affiliation(s)
- T Mizuno
- Institute of Post-LED Photonics (pLED), Tokushima University, Tokushima 770-8506, Japan
- JST-ERATO MINOSHIMA Intelligent Optical Synthesizer Project, Tokushima 770-8506, Japan
| | - E Hase
- Institute of Post-LED Photonics (pLED), Tokushima University, Tokushima 770-8506, Japan
- JST-ERATO MINOSHIMA Intelligent Optical Synthesizer Project, Tokushima 770-8506, Japan
| | - T Minamikawa
- Institute of Post-LED Photonics (pLED), Tokushima University, Tokushima 770-8506, Japan
- JST-ERATO MINOSHIMA Intelligent Optical Synthesizer Project, Tokushima 770-8506, Japan
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima 770-8506, Japan
| | - Y Tokizane
- Institute of Post-LED Photonics (pLED), Tokushima University, Tokushima 770-8506, Japan
| | - R Oe
- Graduate School of Advanced Technology and Science, Tokushima University, Tokushima 770-8506, Japan
| | - H Koresawa
- Graduate School of Advanced Technology and Science, Tokushima University, Tokushima 770-8506, Japan
| | - H Yamamoto
- JST-ERATO MINOSHIMA Intelligent Optical Synthesizer Project, Tokushima 770-8506, Japan
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima 770-8506, Japan
- Center for Optical Research and Education, Utsunomiya University, Tochigi 321-8585, Japan
| | - T Yasui
- Institute of Post-LED Photonics (pLED), Tokushima University, Tokushima 770-8506, Japan
- JST-ERATO MINOSHIMA Intelligent Optical Synthesizer Project, Tokushima 770-8506, Japan
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima 770-8506, Japan
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22
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Oka T, Kamada R, Kunimasa K, Oboshi M, Nishikawa T, Yasui T, Shioyama W, Miyashita Y, Koyama T, Kumagai T, Fujita M. Pathological assessment of osimertinib-associated cardiotoxicity in EGFR-mutated non-small cell lung cancer patients. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Osimertinib, a third-generation epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitor (TKI), inhibits both EGFR-TKI sensitizing mutations and resistant T790M mutations detected in non-small cell lung cancer (NSCLC) patients. Cardiac adverse events (AEs) induced by osimertinib are infrequent; however, cases of severe associated cardiac dysfunction have been reported and remain poorly understood.
Purpose
To assess pathogenesis of osimertinib-associated cardiac AEs, we analyzed myocardial specimens of three NSCLC cases with osimertinib-associated cardiac dysfunction.
Results
Analysis of LVEF prior to and after osimertinb administration in 36 NSCLC patients showed significant decrease of LVEF from 69% to 63%. Within this cohort, right ventricular (RV) biopsy was performed in 2 cases to further understand the pathophysiology of cardiac dysfunction. Case 1 was 78-year-old female with advanced NSCLC harboring an EGFR L858R mutation was treated with osimertinib as second line therapy. After 3 moths of osimetinib treatment, she presented with dyspnea, high NT-proBNP and troponin I, and significantly decreased left ventricular ejection fraction (LVEF) at 28%. RV biopsy showed moderate cardiomyocyte hypertrophy without inflammatory cell infiltration. Case 2 was 52-year-old female with advanced NSCLC harboring L858R mutation. She was treated with osimertinib as first line therapy. After 2 weeks of osimertinib, screening echocardiography revealed a reduction of LVEF from 63% to 41% without cardiac symptom. RV biopsy showed mild cardiomyocyte hypertrophy with infiltration of a few inflammatory cells in interstinum. We further analyzed death case of NSCLC. Case 3 was 63-year-old female with advanced NSCLC harboring EGFR ex. 19 del. and T790M mutations. After 6 months of osimertinib, she suffered from severe respiratory failure and severely reduced LVEF at 27%. She died on the 44th day after admission. Pathological autopsy revealed mild to moderate cardiomyocyte hypertrophy without inflammatory cell infiltration in both ventricles. These pathological findings may indicate neither myocyte injury nor myocarditis was induced by osimertinib in myocardium.
Conclusion
Although additional data collection of advanced NSCLC patients will be important in understanding the pathophysiology of cardiac AEs with osimertinib, osimertinib-associated cardiotoxicity may result from functional inhibition of myocyte contractility by osimertinib without induction of cell death or inflammation.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Oka
- Osaka International Cancer Institute, Department of Onco-Cardiology, Osaka, Japan
| | - R Kamada
- Osaka International Cancer Institute, Department of Onco-Cardiology, Osaka, Japan
| | - K Kunimasa
- Osaka International Cancer Institute, Department of Thoracic Oncology, Osaka, Japan
| | - M Oboshi
- Osaka International Cancer Institute, Department of Onco-Cardiology, Osaka, Japan
| | - T Nishikawa
- Osaka International Cancer Institute, Department of Onco-Cardiology, Osaka, Japan
| | - T Yasui
- Osaka International Cancer Institute, Department of Onco-Cardiology, Osaka, Japan
| | - W Shioyama
- Osaka International Cancer Institute, Department of Onco-Cardiology, Osaka, Japan
| | - Y Miyashita
- Yamanashi Prefectural Central Hospital, Department of Pneumology, Kofu, Japan
| | - T Koyama
- Yamanashi Prefectural Central Hospital, Department of Pathology, Kofu, Japan
| | - T Kumagai
- Osaka International Cancer Institute, Department of Thoracic Oncology, Osaka, Japan
| | - M Fujita
- Osaka International Cancer Institute, Department of Onco-Cardiology, Osaka, Japan
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Kasai T, Momoyama G, Nagase Y, Yasui T, Tanaka S, Matsumoto T. Disease activity affects the recurrent deformities of the lesser toes after resection arthroplasty for rheumatoid forefoot deformity. Mod Rheumatol 2020; 31:365-372. [PMID: 32552188 DOI: 10.1080/14397595.2020.1783164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVES The purpose of this study was to clarify the effect of disease activity on recurrent deformities after resection arthroplasty for forefoot deformities in patients with rheumatoid arthritis (RA). METHODS This study included 83 feet in 58 patients with RA who underwent resection arthroplasty of all metatarsal heads, with a minimum follow-up of 2 years. The patients' demographic characteristics, preoperative radiographic findings, and RA disease activity evaluated using the 28-joint disease activity score based on the erythrocyte sedimentation rate (determined preoperatively and at the final follow-up) were compared between feet with and without postoperative recurrent deformities of the toes. Recurrent deformities were assessed separately for the hallux and lesser toes. RESULTS Recurrence in the hallux and lesser toes occurred in 23 feet (27.7%) and 13 feet (15.7%), respectively. With respect to recurrent hallux deformity, only the preoperative severity of hallux deformity was associated with recurrence. On the other hand, postoperative deformity of the lesser toes was positively associated with disease activity alone and not with other preoperative factors. CONCLUSION Postoperative control of RA disease activity was associated with recurrent deformity of the lesser toes but not that of the hallux after resection arthroplasty of all metatarsals for rheumatoid forefoot deformities.
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Affiliation(s)
- Taro Kasai
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Rheumatology, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Gen Momoyama
- Department of Rheumatology, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan.,Department of Orthopaedic Surgery, Itakura Hospital, Chiba, Japan
| | - Yuichi Nagase
- Department of Rheumatology, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Kawasaki, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takumi Matsumoto
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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Sugino T, Okada A, Chaya R, Tanaka Y, Unno R, Taguchi K, Hamamoto S, Ando R, Mogami T, Yamashita H, Yasui T. Brown adipocytes prevent kidney stone formation via heat-producing protein, uncoupling protein 1. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32856-1] [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] Open
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Takakura Y, Yamaguchi S, Akagi R, Kamegaya M, Kimura S, Tanaka H, Yasui T. Diagnosis of avulsion fractures of the distal fibula after lateral ankle sprain in children: a diagnostic accuracy study comparing ultrasonography with radiography. BMC Musculoskelet Disord 2020; 21:276. [PMID: 32345266 PMCID: PMC7189593 DOI: 10.1186/s12891-020-03287-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 04/13/2020] [Indexed: 12/26/2022] Open
Abstract
Background The purpose of this study was to determine the diagnostic accuracy of ultrasonography for the diagnosis of avulsion fractures of the distal fibula for lateral ankle sprain in children and compare it to that of radiography. Methods Children who sustained lateral ankle sprain were prospectively surveyed. They underwent both ultrasonography and radiography at the first clinic visit to diagnose any concomitant avulsion fractures of the distal fibula. The patients underwent follow-up radiography 4 weeks later to obtain the reference standard diagnosis. The measures of diagnostic accuracy (i.e., sensitivity, specificity, positive predictive value, and negative predictive value) of the initial ultrasonography and radiography were calculated; they were then compared using the McNemar test. Totally, 52 patients (with a median age of 9 years) were analyzed. Results On the reference standard (follow-up) radiographs, 32 patients (62%) were found to have avulsion fractures of the distal fibula. The sensitivity, specificity, positive predictive value, and negative predictive value for ultrasonography were 94, 85, 91, and 89% respectively; and 81, 100, 100, and 77% respectively for radiography at the first visit. There were no significant differences in sensitivity and specificity between the two diagnostic methods (P = 0.22, 0.25). Conclusions Ultrasonography has a high diagnostic accuracy, which is comparable to that of radiography, for the diagnosis of avulsion fracture of the distal fibula. Ultrasonography may be used as an option of imaging modality for lateral ankle sprain in children.
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Affiliation(s)
- Yoshiyuki Takakura
- Takakura Orthopaedic & Sports Clinic, 5-4-21 Tokui-cho, Nada-ku, Kobe-shi, Hyogo, 657-0033, Japan
| | - Satoshi Yamaguchi
- Collage of Liberal Arts and Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8670, Japan. .,Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8670, Japan.
| | - Ryuichiro Akagi
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8670, Japan
| | - Makoto Kamegaya
- Chiba C & A Orthopaedic Clinic, 3-24-2 Oyumino-minami, Midori-ku, Chiba-shi, Chiba, 266-0033, Japan
| | - Seiji Kimura
- Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8670, Japan
| | - Hirofumi Tanaka
- Hyakutake Orthopedic Surgery and Sports Clinic, 4-2-15 Mizugae, Saga-shi, Saga, 840-0054, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, 5-1-1 Futako, Takatsu-ku, Kawasaki-shi, Kanagawa, 213-8507, Japan
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Oboshi M, Oka T, Yasui T, Shioyama W, Tada Y, Ishikawa J, Fujita M. P1570Cardiac strain detects subclinical decline of cardiac function after hematopoietic stem cell transplantation in patients with hematologic malignancies. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Hematopoietic stem cell transplantation (HSCT) has been established as a treatment of various hematologic malignancies and improved their prognoses. HSCT includes intensive chemotherapy and systemic radiation, which occasionally induces cardiac dysfunction. However, early predictor of cardiac dysfunction associated with HSCT is still elusive. Recently, left ventricular (LV) global longitudinal strain (GLS) has been recognized as an early detector of cardiotoxicity. In this study, we retrospectively analyzed GLS and cardiac parameters in patients with hematologic malignancies before and after HSCT to explore HSCT-induced cardiac dysfunction.
Methods
Thirty-one consecutive patients undergone HSCT were enrolled and reviewed their cardiac comorbidities, medications, chemotherapy, and radiotherapy before HSCT. Transthoracic echocardiographic variables including GLS, cardiac troponin-I, and B-type natriuretic peptide were analyzed prior to and 1 month after HSCT.
Results
The patients were 49.7±13.5 years of age, 61% were male, and 52% had cardiovascular risk factors. Cardiac troponin-I was significantly increased following HSCT from 0.010±0.002 ng/ml to 0.016±0.014 ng/ml (P=0.02), indicating that HSCT should have certain impact on cardiac myocytes. Echocardiographic analyses revealed that LV GLS was significantly decreased after HSCT from −19.4±0.8% to −18.8±0.8% (P<0.001), whereas there was no significant difference in LV ejection fraction between these time points of HSCT (63.6±5.5% vs. 64.7±4.6%; P=0.13). Although there was no correlation between the decline of GLS and the increase of troponin-I in this cohort, these results clearly indicated that GLS, but not LVEF, predicted HSCT-induced early and subclinical cardiac dysfunction at 1 month after the HSCT.
Conclusion
GLS detected early decline of cardiac function after HSCT in the patients with hematologic malignancies. Further follow-up investigations will reveal relationship between GLS, troponin-I and prognosis of cardiac function after HSCT in patients with hematologic malignancies.
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Affiliation(s)
- M Oboshi
- Osaka International Cancer Institute, Osaka, Japan
| | - T Oka
- Osaka International Cancer Institute, Osaka, Japan
| | - T Yasui
- Osaka International Cancer Institute, Osaka, Japan
| | - W Shioyama
- Osaka International Cancer Institute, Osaka, Japan
| | - Y Tada
- Osaka International Cancer Institute, Osaka, Japan
| | - J Ishikawa
- Osaka International Cancer Institute, Osaka, Japan
| | - M Fujita
- Osaka International Cancer Institute, Osaka, Japan
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Tamae A, Ishizu K, Yoshida T, Kubo K, Matsumoto N, Yasui T, Masutani K, Tsuruya K, Nakagawa T. Evaluation of the Effects of Chronic Kidney Disease and Hemodialysis on the Inner Ear Using Multifrequency Tympanometry. J Int Adv Otol 2019; 14:447-450. [PMID: 30411705 DOI: 10.5152/iao.2018.4736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES To evaluate the effects of chronic kidney disease (CKD) and hemodialysis (HD) on the inner ear using the G width (the width between the bimodal peaks of the conductance (G) tympanogram at 2,000 Hz), which reflects the inner ear pressure and/or the existence of endolymphatic hydrops. MATERIALS AND METHODS We selected five patients (10 ears) from the patients with CKD who were hospitalized for creation of arteriovenous fistula prior to initiation of HD (non-HD group), and we selected seven patients (14 ears) from the patients with CKD who were undergoing HD (the HD group). As a control group, we selected 80 healthy individuals (160 ears); these were mainly the medical staff of the hospital. We measured the G width of the control group and that of patients with CKD using multifrequency tympanometry. RESULTS The mean G widths of the HD (measured just before an HD session), non-HD, and control groups were 210.7, 128.4, and 97.0 daPa, respectively. The G width of the HD group was significantly greater than that of the control and non-HD groups (p<0.01 and p<0.01, respectively; Tukey-Kramer test after one-way analysis of variance). The non-HD group also had a greater G width than the control, but it was not significant (p=0.20; Tukey-Kramer). No significant changes were observed in the G widths of the HD group, just before and after a single HD session (p=0.423; paired t-test). CONCLUSION The greater G width observed in hemodialyzed CKD patients suggests either an increased inner ear pressure or the existence of endolymphatic hydrops in these patients, which is probably related to their otologic symptoms.
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Affiliation(s)
- Akihiro Tamae
- Department of Otorhinolaryngology, Hamanomachi Hospital, Fukuoka, Japan
| | | | - Takamasa Yoshida
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazuhiko Kubo
- Department of Otorhinolaryngology, Chidoribashi General Hospital, Fukuoka, Japan
| | - Nozomu Matsumoto
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuro Yasui
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kosuke Masutani
- Kidney Care Unit, Kyushu University Hospital, Fukuoka, Japan
| | - Kazuhiko Tsuruya
- Department of Integrated Therapy for Chronic Kidney Disease, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takashi Nakagawa
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Kasai T, Yasui T, Matsumoto T, Tanaka Y, Takakura Y, Tanaka S. Synovial Metallosis After Ceramic Total Ankle Arthroplasty Treated With a Total Talar Prosthesis: A Case Report. J Foot Ankle Surg 2019; 58:1010-1013. [PMID: 31474391 DOI: 10.1053/j.jfas.2018.12.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Indexed: 02/03/2023]
Abstract
Total ankle arthroplasty is a useful surgical procedure for osteoarthritis of the ankle, but aseptic loosening of components is an issue. We report here a case of aseptic implant loosening with metallosis after total ankle arthroplasty using the TNK ankle (Kyocera, Kyoto, Japan), which occurred despite the components being ceramic. We also report favorable results from our method of treatment using a total talar prosthesis in the revision surgery. During the revision surgery, synovial metallosis was found, probably related to superficial damage to the screw affixing the tibial component to the bone. Because both the tibial and talar components were loose, all the components and the remaining talar bone were removed. A new tibial component and a custom-made alumina-ceramic total talar prosthesis was inserted. Pain relief was achieved and maintained through the latest follow-up visit at 42 months after revision surgery. Dorsiflexion of the ankle improved from 0° to 5° and plantarflexion remained unchanged from its preoperative range of 20°. The American Orthopaedic Foot & Ankle Society ankle-hindfoot score improved from 38 to 80 points. To the best of our knowledge, this is the first reported case of an alumina-ceramic total ankle prosthesis loosening caused by metallosis resulting from screw abrasion. Favorable treatment results were obtained by using a total talar prosthesis in the revision surgery.
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Affiliation(s)
- Taro Kasai
- Surgeon, Department of Orthopedic Sugery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Tetsuro Yasui
- Associate Professor, Department of Orthopedic Surgery, Teikyo University Hospital Mizonokuchi, Kanagawa, Japan; Lecturer, Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.
| | - Takumi Matsumoto
- Attending Surgeon, Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasuhito Tanaka
- Professor, Department of Orthopedic Surgery, Nara Medical University, Nara, Japan
| | - Yoshinori Takakura
- Professor Emeritus, Department of Orthopedic Surgery, Nara Medical University, Nara, Japan
| | - Sakae Tanaka
- Professor, Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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Mizuno T, Tomita N, Uchiyama K, Sugie C, Imai M, Ayakawa S, Niwa M, Matsui T, Otsuka S, Manabe Y, Nomura K, Kondo T, Kosaki K, Akifumi M, Miyamoto A, Takemoto S, Yasui T, Shibamoto Y. Impact of Early Salvage Radiotherapy in Patients with Biochemical Recurrence after Radical Prostatectomy: Results of a Multi-institutional Retrospective Study. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1843] [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: 11/15/2022]
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Yasui T, Nakashima K. [Hypoxia epigenetically bestows astrocytic differentiation potential on human pluripotent cell-derived neural stem/precursor cells]. Nihon Yakurigaku Zasshi 2019; 153:54-60. [PMID: 30745514 DOI: 10.1254/fpj.153.54] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The central nervous system (CNS) is composed of three major cell types, neurons, astrocytes, and oligodendrocytes, which differentiate from common multipotent neural stem/precursor cells (NS/PCs). However, NS/PCs do not have this multipotentiality from the beginning: neurons are generated first and astrocytes are later during CNS development. This developmental progression is observed in vitro by using human (h) NS/PCs derived from pluripotent cells, such as embryonic- and induced pluripotent-stem cells (ES/iPSCs), however, in contrast to rodent's pluripotent cells, they require quite long time to obtain astrocytic differentiation potential. Here, we show that hypoxia confers astrocytic differentiation potential on hNS/PCs through epigenetic alteration for gene regulation. Furthermore, we found that these molecular mechanisms can be applied to functional analysis of patient' iPSC-derived astrocytes. In this review, we summarize recent findings that address molecular mechanisms of epigenetic and transcription factor-mediated regulation that specify NS/PC fate and the development of potential therapeutic strategies for treating astrocyte-mediated neurological disorders.
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Affiliation(s)
- Tetsuro Yasui
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University
| | - Kinichi Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University
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Izawa N, Kurotaki D, Nomura S, Fujita T, Omata Y, Yasui T, Hirose J, Matsumoto T, Saito T, Kadono Y, Okada H, Miyamoto T, Tamura T, Aburatani H, Tanaka S. Cooperation of PU.1 With IRF8 and NFATc1 Defines Chromatin Landscapes During RANKL-Induced Osteoclastogenesis. J Bone Miner Res 2019; 34:1143-1154. [PMID: 30721543 DOI: 10.1002/jbmr.3689] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 01/20/2019] [Accepted: 01/23/2019] [Indexed: 12/14/2022]
Abstract
Receptor activator of nuclear factor κB ligand (RANKL) induces osteoclast (OC) differentiation from bone marrow-derived macrophages (BMMs). The transcription factors nuclear factor of activated T cells 1 (NFATc1) and interferon regulatory factor (IRF) 8 play positive and negative roles, respectively, in this process. However, genomewide mapping of the active cis-regulatory elements regulating OC differentiation has not been performed, and little is known about the global landscape of OC-specific gene regulation. We used chromatin immunoprecipitation and formaldehyde-assisted isolation of regulatory elements followed by sequencing to show that PU.1 transcription factor binding motifs were overrepresented at active cis-regulatory regions in both murine BMMs and OCs, while IRF and NFAT binding motifs were selectively enriched at these regions in BMMs and OCs, respectively. We also found that RANKL induced the downregulation of Irf8 and upregulation of Nfatc1 expression, which was associated with dramatic alterations in histone modification. BMM-specific PU.1 binding sites were observed to overlap with IRF8 binding sites in BMMs, and this also occurred for OC-specific PU.1 binding sites and NFATc1 binding sites in OCs. The expression of genes with IRF8 peaks within BMM-specific PU.1 binding sites was significantly higher in BMMs than in OCs, while that of genes with NFATc1 peaks within OC-specific PU.1 binding sites was significantly higher in OCs than in BMMs. Our results suggest that PU.1 switches its transcription partner from IRF8 to NFATc1 and alters the binding regions during RANKL-induced osteoclastogenesis, which is associated with changes in epigenetic profiles and the control of cell type-specific gene expression. © 2019 American Society for Bone and Mineral Research.
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Affiliation(s)
- Naohiro Izawa
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.,Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
| | - Daisuke Kurotaki
- Department of Immunology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Seitaro Nomura
- Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
| | - Takanori Fujita
- Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
| | - Yasunori Omata
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kanagawa, Japan
| | - Jun Hirose
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takumi Matsumoto
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Taku Saito
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yuho Kadono
- Department of Orthopaedic Surgery, Saitama Medical University, Saitama, Japan
| | - Hiroyuki Okada
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takeshi Miyamoto
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Tomohiko Tamura
- Department of Immunology, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Advanced Medical Research Center, Yokohama City University, Yokohama, Japan
| | - Hiroyuki Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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Kato T, Mizuno K, Nishio H, Iwatsuki S, Nakane A, Akita H, Okamura T, Yasui T, Hayashi Y. Appropriate management of high-flow priapism based on color Doppler ultrasonography findings in pediatric patients: four case reports and a review of the literature. J Pediatr Urol 2019; 15:187.e1-187.e6. [PMID: 30910454 DOI: 10.1016/j.jpurol.2019.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 04/19/2018] [Accepted: 01/02/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION High-flow priapism in children is a very rare condition, and there is no clear consensus on its management. High-flow priapism is associated with increased cavernosal blood flow and broadly divided into two groups based on the presence or absence of arteriocavernous fistula in the corpora cavernosa. OBJECTIVE This study aimed to determine the appropriate management of high-flow priapism based on the existence of arteriocavernous fistula using penile color Doppler ultrasonography (CDU) findings in the pediatric population. STUDY DESIGN The cases of four boys aged between 6 and 11 years with high-flow priapism treated between 2009 and 2017 are reported. Two boys had prior perineal trauma, one boy had blunt penile glans trauma, and one had no obvious cause for the condition. All boys initially underwent penile CDU and were treated conservatively or via selective arterial embolization depending upon the presence or absence of an arteriocavernous fistula. RESULTS Penile CDU revealed an arteriocavernous fistula inside the corpus cavernosum penis in two of four boys and increased blood flow inside the corpus spongiosum in the remaining boys. The former two boys underwent selective arterial embolization and one boy underwent repeated embolization because of remaining arteriocavernous fistula feeding from the contralateral cavernosal artery, whereas the boys with no arteriocavernous fistula on CDU were managed conservatively. All boys were successfully treated within 1 month, and they had normal morning erection and no evidence of recurrent priapism at the follow-up. DISCUSSION Unlike low-flow priapism, high-flow priapism is not a medical emergency. Therefore, conservative therapy is an appropriate initial treatment, although selective arterial embolization can be effective for high-flow priapism with arteriocavernous fistula, with a success rate of 97% and no reported complications to date. Penile CDU is an imaging technique that can detect focal areas of turbulent flow with sensitivity close to 100%. This study has several limitations including a small number of cases, limited follow-up duration, and possibility of spontaneous arteriocavernous fistula closure in cases treated by arterial embolization. CONCLUSION Penile CDU could be a reliable tool to diagnose high-flow priapism and detect the presence or absence of arteriocavernous fistula. Although conservative therapy remains the first choice, selective arterial embolization may be an early treatment option when CDU reveals an arteriocavernous fistula.
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Affiliation(s)
- T Kato
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - K Mizuno
- Department of Pediatric Urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - H Nishio
- Department of Pediatric Urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - S Iwatsuki
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - A Nakane
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - H Akita
- Department of Urology, Anjo Kosei Hospital, 28 Higashihirokute, Anjo-cho, Anjo, 446-8602, Japan.
| | - T Okamura
- Department of Urology, Anjo Kosei Hospital, 28 Higashihirokute, Anjo-cho, Anjo, 446-8602, Japan.
| | - T Yasui
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - Y Hayashi
- Department of Pediatric Urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
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Uezono N, Zhu Y, Fujimoto Y, Yasui T, Matsuda T, Nakajo M, Abematsu M, Setoguchi T, Mori S, Takahashi HK, Komiya S, Nishibori M, Nakashima K. Prior Treatment with Anti-High Mobility Group Box-1 Antibody Boosts Human Neural Stem Cell Transplantation-Mediated Functional Recovery After Spinal Cord Injury. Stem Cells 2018. [PMID: 29517828 DOI: 10.1002/stem.2802] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Together with residual host neurons, transplanted neural stem cell (NSC)-derived neurons play a critical role in reconstructing disrupted neural circuits after spinal cord injury (SCI). Since a large number of tracts are disrupted and the majority of host neurons die around the lesion site as the damage spreads, minimizing this spreading and preserving the lesion site are important for attaining further improvements in reconstruction. High mobility group box-1 (HMGB1) is a damage-associated molecular pattern protein that triggers sterile inflammation after tissue injury. In the ischemic and injured brain, neutralization of HMGB1 with a specific antibody reportedly stabilizes the blood-brain barrier, suppresses inflammatory cytokine expression, and improves functional recovery. Using a SCI model mouse, we here developed a combinatorial treatment for SCI: administering anti-HMGB1 antibody prior to transplantation of NSCs derived from human induced pluripotent stem cells (hiPSC-NSCs) yielded a dramatic improvement in locomotion recovery after SCI. Even anti-HMGB1 antibody treatment alone alleviated blood-spinal cord barrier disruption and edema formation, and increased the number of neurites from spared axons and the survival of host neurons, resulting in functional recovery. However, this recovery was greatly enhanced by the subsequent hiPSC-NSC transplantation, reaching an extent that has never before been reported. We also found that this improved recovery was directly associated with connections established between surviving host neurons and transplant-derived neurons. Taken together, our results highlight combinatorial treatment with anti-HMGB1 antibody and hiPSC-NSC transplantation as a promising novel therapy for SCI. Stem Cells 2018;36:737-750.
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Affiliation(s)
- Naohiro Uezono
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan.,Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yicheng Zhu
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Yusuke Fujimoto
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Tetsuro Yasui
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Taito Matsuda
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Masahide Nakajo
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan.,Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masahiko Abematsu
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takao Setoguchi
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Shuji Mori
- Department of Pharmacology, School of Pharmacy, Shujitsu University, Naka-ku, Okayama, Japan
| | - Hideo K Takahashi
- Department of Pharmacology, Kinki University, Faculty of Medicine, Osaka-Sayama, Japan
| | - Setsuro Komiya
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masahiro Nishibori
- Department of Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Kita-ku, Okayama, Japan
| | - Kinichi Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
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Yasui T, Uezono N, Nakashima H, Noguchi H, Matsuda T, Noda-Andoh T, Okano H, Nakashima K. Hypoxia Epigenetically Confers Astrocytic Differentiation Potential on Human Pluripotent Cell-Derived Neural Precursor Cells. Stem Cell Reports 2018; 8:1743-1756. [PMID: 28591654 PMCID: PMC5470174 DOI: 10.1016/j.stemcr.2017.05.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 05/01/2017] [Accepted: 05/01/2017] [Indexed: 12/22/2022] Open
Abstract
Human neural precursor cells (hNPCs) derived from pluripotent stem cells display a high propensity for neuronal differentiation, but they require long-term culturing to differentiate efficiently into astrocytes. The mechanisms underlying this biased fate specification of hNPCs remain elusive. Here, we show that hypoxia confers astrocytic differentiation potential on hNPCs through epigenetic gene regulation, and that this was achieved by cooperation between hypoxia-inducible factor 1α and Notch signaling, accompanied by a reduction of DNA methylation level in the promoter region of a typical astrocyte-specific gene, Glial fibrillary acidic protein. Furthermore, we found that this hypoxic culture condition could be applied to rapid generation of astrocytes from Rett syndrome patient-derived hNPCs, and that these astrocytes impaired neuronal development. Thus, our findings shed further light on the molecular mechanisms regulating hNPC differentiation and provide attractive tools for the development of therapeutic strategies for treating astrocyte-mediated neurological disorders.
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Affiliation(s)
- Tetsuro Yasui
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan; Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Naohiro Uezono
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Hideyuki Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Hirofumi Noguchi
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Taito Matsuda
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Tomoko Noda-Andoh
- Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hideyuki Okano
- Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Kinichi Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan; Laboratory of Molecular Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan.
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Watanabe S, Kondo Y, Naoe A, Yasui T, Suzuki T, Hara F, Uga N, Miyata M, Boda H. Effects of assisted reproductive technologies in neonates with indications for surgery (2007-2016). J Neonatal Perinatal Med 2018; 11:379-385. [PMID: 30149470 DOI: 10.3233/npm-17131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PURPOSE Recently, the number of births using assisted reproductive technologies (ART) has increased. An associated increase in the incidence of congenital malformations in babies conceived using this technology has also been reported. Therefore, we aimed to investigate the rate of malformations in babies with neonatal surgical diseases, who were conceived using ART. MATERIALS AND METHODS Between January 2007 and December 2016, 1737 patients were admitted to our hospital. We analyzed the incidence of congenital cardiac diseases, genetic anomalies, and congenital anomalies of the kidney and urinary tract (CAKUT) in neonates conceived by ART. The χ2 test and logistic regression analysis were used to assess the odds ratios (ORs) for congenital malformations. A P-value < 0.05 indicated statistical significance. RESULTS The OR for CAKUT was 16.94 for the first-birth neonates conceived using ART, [P < 0.05, AUC (area under the curve) = 0.86]. However, for non-surgery neonates, the OR for CAKUT was 5.99 (P = 0.15, AUC = 0.87), compared to 32.27 (P < 0.05, AUC = 0.93) for parallel conditions in surgery-neonates. CONCLUSION Neonates conceived using ART are prone to develop CAKUT, which will need surgical treatment. Therefore, more management is necessary for associated malformations in these babies, particularly in cases with CAKUT.
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Affiliation(s)
- S Watanabe
- Department of Pediatric Surgery, Fujita Health University Hospital, Aichi, Japan
| | - Y Kondo
- Department of Pediatric Surgery, Fujita Health University Hospital, Aichi, Japan
| | - A Naoe
- Department of Pediatric Surgery, Fujita Health University Hospital, Aichi, Japan
| | - T Yasui
- Department of Pediatric Surgery, Fujita Health University Hospital, Aichi, Japan
| | - T Suzuki
- Department of Pediatric Surgery, Fujita Health University Hospital, Aichi, Japan
| | - F Hara
- Department of Pediatric Surgery, Fujita Health University Hospital, Aichi, Japan
| | - N Uga
- Department of Pediatric Surgery, Fujita Health University Hospital, Aichi, Japan
| | - M Miyata
- Department of Pediatric, Fujita Health University Hospital, Aichi, Japan
| | - H Boda
- Department of Pediatric, Fujita Health University Hospital, Aichi, Japan
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Yamamoto Y, Murayama T, Jiang J, Yasui T, Shibuya M. The vinylogous Catellani reaction: a combined computational and experimental study. Chem Sci 2017; 9:1191-1199. [PMID: 29675164 PMCID: PMC5885779 DOI: 10.1039/c7sc04265e] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 11/29/2017] [Indexed: 01/12/2023] Open
Abstract
In the presence of 5 mol% Pd(OAc)2, 1 equiv. of norbornene, and K2CO3, the reaction of 4-iodo-2-quinolones with tertiary o-bromobenzylic alcohols produced the desired benzopyran-fused 2-quinolones in moderate to high yields.
In the presence of 5 mol% Pd(OAc)2, 1 equiv. of norbornene, and K2CO3, the reaction of 4-iodo-2-quinolones with tertiary o-bromobenzylic alcohols produced the desired benzopyran-fused 2-quinolones in moderate to high yields. A Catellani-type mechanism involving vinylic C–H cleavage is proposed based on the results of control experiments and density functional theory calculations.
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Affiliation(s)
- Y Yamamoto
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
| | - T Murayama
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
| | - J Jiang
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
| | - T Yasui
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
| | - M Shibuya
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
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Masuda Y, Ogura Y, Inagaki Y, Yasui T, Aizu Y. Analysis of the influence of collagen fibres in the dermis on skin optical reflectance by Monte Carlo simulation in a nine-layered skin model. Skin Res Technol 2017; 24:248-255. [DOI: 10.1111/srt.12421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Y. Masuda
- Shiseido Global Innovation Center; Yokohama Japan
| | - Y. Ogura
- Shiseido Global Innovation Center; Yokohama Japan
| | - Y. Inagaki
- Muroran Institute of Technology; Muroran Japan
| | - T. Yasui
- Tokushima University; Tokushima Japan
| | - Y. Aizu
- Muroran Institute of Technology; Muroran Japan
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Zhu Y, Uezono N, Yasui T, Nakashima K. Neural stem cell therapy aiming at better functional recovery after spinal cord injury. Dev Dyn 2017; 247:75-84. [PMID: 28766845 DOI: 10.1002/dvdy.24558] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/26/2017] [Accepted: 07/28/2017] [Indexed: 12/22/2022] Open
Abstract
Injury to the spinal cord causes transection of axon fibers and neural cell death, resulting in disruption of the neural network and severe functional loss. Reconstruction of the damaged neural circuits was once considered to be hopeless as the adult mammalian central nervous system has very poor ability to regenerate. For this reason, there is currently no effective therapeutic treatment for spinal cord injury (SCI). However, with recent developments in stem cell research and cell culture technology, regenerative therapy using neural stem cell (NSC) transplantation has rapidly been developed, and this therapeutic strategy makes it possible to rebuild the destroyed neural circuits. In this review, we discuss the recent breakthroughs in NSC transplantation therapy for SCI. Developmental Dynamics 247:75-84, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Yicheng Zhu
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Naohiro Uezono
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuro Yasui
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kinichi Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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39
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Yasui T, Hirose J, Ono K, Takedani H. Arthroscopic debridement for advanced haemophilic ankle arthropathy. Haemophilia 2017; 23:e479-e481. [PMID: 28782247 DOI: 10.1111/hae.13309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Indexed: 12/13/2022]
Affiliation(s)
- T Yasui
- Department of Orthopedic Surgery, Teikyo University Mizonokuchi Hospital, Kanagawa, Japan.,Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - J Hirose
- Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Ono
- Department of Joint Surgery, Research Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - H Takedani
- Department of Joint Surgery, Research Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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40
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Oka H, Kadono Y, Ohashi S, Yasui T, Ono K, Matsudaira K, Nishino J, Tanaka S. Assessing joint destruction in the knees of patients with rheumatoid arthritis by using a semi-automated software for magnetic resonance imaging: therapeutic effect of methotrexate plus etanercept compared with methotrexate monotherapy. Mod Rheumatol 2017; 28:235-241. [PMID: 28766398 DOI: 10.1080/14397595.2017.1350255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVES To evaluate the prevention of knee joint destruction and clinical efficacy of methotrexate (MTX) plus etanercept (ETN) compared with MTX monotherapy in patients with rheumatoid arthritis (RA) by using semi-automated software for magnetic resonance imaging (MRI) scan analysis. MATERIALS AND METHODS This study enrolled patients with active moderate-to-severe RA who displayed an inadequate response to oral MTX at screening. Patients were assigned to receive either MTX plus ETN or MTX monotherapy (≥10 mg/week). The primary endpoint was the quantitative knee cartilage volume using our software developed for MRI scan analysis. RESULTS A total of 18 female patients were enrolled in this study and allocated to the MTX + ETN group (n = 9) or the MTX monotherapy group (n = 9). At 52 weeks, the quantitative knee cartilage volume was significantly reduced compared with baseline in both groups (MTX plus ETN group: 2.3 ± 2.3 cm3; MTX monotherapy group: 2.4 ± 1.6 cm3); however, the difference was not significant. CONCLUSION The semi-automated software for MRI scan analysis can reveal useful and potentially clinically important information about the characteristics of knee joint destruction in patients with RA.
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Affiliation(s)
- Hiroyuki Oka
- a Department of Medical Research and Management for Musculoskeletal Pain , 22nd Century Medical & Research Center, The University of Tokyo , Tokyo , Japan
| | - Yuho Kadono
- b Department of Orthopaedic Surgery , Saitama Medical University , Saitama , Japan
| | - Satoru Ohashi
- c Department of Orthopaedic Surgery , Sagamihara Hospital, National Hospital Organization , Kanagawa , Japan
| | - Tetsuro Yasui
- d Department of Orthopaedic Surgery , Teikyo University Mizonokuchi Hospital , Kanagawa , Japan
| | - Kumiko Ono
- e Department of Orthopaedic Surgery, Faculty of Medicine , The University of Tokyo , Tokyo , Japan
| | - Ko Matsudaira
- a Department of Medical Research and Management for Musculoskeletal Pain , 22nd Century Medical & Research Center, The University of Tokyo , Tokyo , Japan
| | - Jinju Nishino
- e Department of Orthopaedic Surgery, Faculty of Medicine , The University of Tokyo , Tokyo , Japan
| | - Sakae Tanaka
- e Department of Orthopaedic Surgery, Faculty of Medicine , The University of Tokyo , Tokyo , Japan
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41
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Takeda T, Iwatsuki S, Hamakawa T, Mizuno K, Kamiya H, Umemoto Y, Kubota H, Kubota Y, Sasaki S, Yasui T. Chromosomal anomalies and sperm retrieval outcomes of patients with non-obstructive azoospermia: a case series. Andrology 2017; 5:473-476. [DOI: 10.1111/andr.12338] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 12/06/2016] [Accepted: 01/16/2017] [Indexed: 11/26/2022]
Affiliation(s)
- T. Takeda
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - S. Iwatsuki
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - T. Hamakawa
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - K. Mizuno
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - H. Kamiya
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Umemoto
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - H. Kubota
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Kubota
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - S. Sasaki
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - T. Yasui
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
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Hase E, Sato K, Yonekura D, Minamikawa T, Takahashi M, Yasui T. Evaluation of the histological and mechanical features of tendon healing in a rabbit model with the use of second-harmonic-generation imaging and tensile testing. Bone Joint Res 2016; 5:577-585. [PMID: 27881441 PMCID: PMC5131088 DOI: 10.1302/2046-3758.511.bjr-2016-0162.r1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 10/06/2016] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES This study aimed to evaluate the histological and mechanical features of tendon healing in a rabbit model with second-harmonic-generation (SHG) imaging and tensile testing. MATERIALS AND METHODS A total of eight male Japanese white rabbits were used for this study. The flexor digitorum tendons in their right leg were sharply transected, and then were repaired by intratendinous stitching. At four weeks post-operatively, the rabbits were killed and the flexor digitorum tendons in both right and left legs were excised and used as specimens for tendon healing (n = 8) and control (n = 8), respectively. Each specimen was examined by SHG imaging, followed by tensile testing, and the results of the two testing modalities were assessed for correlation. RESULTS While the SHG light intensity of the healing tendon samples was significantly lower than that of the uninjured tendon samples, 2D Fourier transform SHG images showed a clear difference in collagen fibre structure between the uninjured and the healing samples, and among the healing samples. The mean intensity of the SHG image showed a moderate correlation (R2 = 0.37) with Young's modulus obtained from the tensile testing. CONCLUSION Our results indicate that SHG microscopy may be a potential indicator of tendon healing.Cite this article: E. Hase, K. Sato, D. Yonekura, T. Minamikawa, M. Takahashi, T. Yasui. Evaluation of the histological and mechanical features of tendon healing in a rabbit model with the use of second-harmonic-generation imaging and tensile testing. Bone Joint Res 2016;5:577-585. DOI: 10.1302/2046-3758.511.BJR-2016-0162.R1.
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Affiliation(s)
- E Hase
- Graduate School of Advanced Technology and Science, The Tokushima University, Tokushima 770-8506, Japan
| | - K Sato
- Graduate School of Science and Technology, The Tokushima University, Tokushima 770-8506, Japan
| | - D Yonekura
- Graduate School of Science and Technology, The Tokushima University, Tokushima 770-8506, Japan
| | - T Minamikawa
- Graduate School of Science and Technology, The Tokushima University, Tokushima 770-8506, Japan
| | - M Takahashi
- Department of Orthopaedic Surgery, Tokushima Prefectural Central Hospital, Tokushima, 770-8539, Japan
| | - T Yasui
- Graduate School of Science and Technology, The Tokushima University, Tokushima 770-8506, Japan
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Yasui T, Oka H, Omata Y, Kadono Y, Tanaka S. Relationship between roentgenographic joint destruction in the hands and functional disorders among patients with rheumatoid arthritis. Mod Rheumatol 2016; 27:828-832. [PMID: 27830955 DOI: 10.1080/14397595.2016.1254361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVES Although a relationship between joint destruction and functional disorders seems apparent in patients with rheumatoid arthritis (RA), it has not been well proven in the literature. The aims of this study were to clarify the relationship between roentgenographic joint destruction in the hands and functional disorders in patients with RA, and to explore the appropriate assessment measures for functional disorders. METHODS Cross-sectional data of the Genant-modified Total Sharp Score (Genant-mTSS), Health Assessment Questionnaire-Disability Index (HAQ-DI), Disabilities of the Arm, Shoulder, and Hand (DASH), and Michigan Hand Outcomes Questionnaire (MHQ) were collected from 50 consecutive RA patients and analyzed. RESULTS HAQ-DI, DASH, and MHQ had close correlations with Genant-mTSS, with correlation coefficients of 0.69, 0.71, and -0.70, respectively, among patients with low disease activity (DAS28 < 3.2). A floor effect was observed in HAQ-DI, but neither floor nor ceiling effects were observed in DASH and MHQ. Both DASH and MHQ were strongly correlated with HAQ-DI, with correlation coefficients of 0.87 and 0.73, respectively. CONCLUSIONS Functional disorders had significant relationships with roentgenographic joint destruction in the hands among RA patients with low disease activity. As assessment measures of functional disorders, DASH and MHQ had no floor or ceiling effects, being different from HAQ-DI.
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Affiliation(s)
- Tetsuro Yasui
- a Department of Orthopaedic Surgery, Faculty of Medicine , The University of Tokyo , Tokyo , Japan.,b Department of Orthopaedic Surgery , Teikyo University Mizonokuchi Hospital , Kanagawa , Japan
| | - Hiroyuki Oka
- c Department of Medical Research and Management for Musculoskeletal Pain , 22nd Century Medical & Research Center, Faculty of Medicine, The University of Tokyo , Tokyo , Japan , and
| | - Yasunori Omata
- a Department of Orthopaedic Surgery, Faculty of Medicine , The University of Tokyo , Tokyo , Japan
| | - Yuho Kadono
- d Department of Orthopaedic Surgery , Saitama Medical University , Saitama , Japan
| | - Sakae Tanaka
- a Department of Orthopaedic Surgery, Faculty of Medicine , The University of Tokyo , Tokyo , Japan
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Hashiguchi Y, Kasai M, Fukuda T, Ichimura T, Yasui T, Sumi T. Serum carcinoembryonic antigen as a tumour marker in patients with endometrial cancer. ACTA ACUST UNITED AC 2016; 23:e439-e442. [PMID: 27803603 DOI: 10.3747/co.23.3153] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND No potential tumour markers have been validated for prognosis in endometrial cancer. However, carcinoembryonic antigen (cea) is one of the most widely used tumour markers in various types of cancer. Although cea expression in endometrial cancer has been investigated, its prognostic value remains controversial, and no studies have investigated serum cea levels in large case series. In the present study, we investigated diagnostic and prognostic applications of serum cea for endometrial cancer. METHODS This prospective study was approved by our Institutional Review Board. Between January 2006 and December 2012, serum cea was measured prospectively in 215 patients with endometrial cancer and was subsequently measured during treatment and at scheduled follow-up examinations in patients with elevated baseline serum cea. RESULTS During the study period, 215 patients (142 stage i, 19 stage ii, 32 stage iii, 22 stage iv) were treated for endometrial cancer. By the time of last follow-up, 52 had relapsed (24.2%), and the median follow-up duration was 45 months (range: 1-95 months). Elevated serum cea was identified in 25 patients (11.6%) and was associated with histologic type (p = 0.04), histologic grade (p = 0.03), and myometrial invasion depth (p = 0.01). Elevated serum cea was not related to clinical stage, lymph node metastasis, distant metastasis, age, menopausal status, or body mass index. Relapse of disease was related to elevated serum cea (p = 0.006). CONCLUSIONS Serum cea is a potential prognostic indicator for endometrial cancer.
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Affiliation(s)
- Y Hashiguchi
- Department of Obstetrics and Gynecology, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - M Kasai
- Department of Obstetrics and Gynecology, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - T Fukuda
- Department of Obstetrics and Gynecology, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - T Ichimura
- Department of Obstetrics and Gynecology, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - T Yasui
- Department of Obstetrics and Gynecology, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - T Sumi
- Department of Obstetrics and Gynecology, Osaka City University, Graduate School of Medicine, Osaka, Japan
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Iwatsuki S, Sasaki S, Taguchi K, Hamakawa T, Mizuno K, Okada A, Kubota Y, Umemoto Y, Hayashi Y, Yasui T. Effect of obesity on sperm retrieval outcome and reproductive hormone levels in Japanese azoospermic men with and without Klinefelter syndrome. Andrology 2016; 5:82-86. [DOI: 10.1111/andr.12281] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 08/04/2016] [Indexed: 11/30/2022]
Affiliation(s)
- S. Iwatsuki
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - S. Sasaki
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - K. Taguchi
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - T. Hamakawa
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - K. Mizuno
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - A. Okada
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Kubota
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Umemoto
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Hayashi
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - T. Yasui
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
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Ishikawa Y, An Q, Nakagawa J, Oka H, Yasui T, Tojima M, Inokuchi H, Haga N, Yamakawa H, Tamura Y, Yamashita A, Asama H. Gait analysis of patients with knee osteoarthritis by using elevation angle: confirmation of the planar law and analysis of angular difference in the approximate plane. Adv Robot 2016. [DOI: 10.1080/01691864.2016.1229217] [Citation(s) in RCA: 6] [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: 10/21/2022]
Affiliation(s)
- Yuki Ishikawa
- Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Qi An
- Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Junki Nakagawa
- Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Oka
- The 22nd Century Medical and Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Kawasaki, Japan
| | - Michio Tojima
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan
| | - Haruhi Inokuchi
- Department of Rehabilitation Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Nobuhiko Haga
- Department of Rehabilitation Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Yamakawa
- Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yusuke Tamura
- Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Atsushi Yamashita
- Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Hajime Asama
- Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
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Omata Y, Nakamura S, Koyama T, Yasui T, Hirose J, Izawa N, Matsumoto T, Imai Y, Seo S, Kurokawa M, Tsutsumi S, Kadono Y, Morimoto C, Aburatani H, Miyamoto T, Tanaka S. Identification of Nedd9 as a TGF-β-Smad2/3 Target Gene Involved in RANKL-Induced Osteoclastogenesis by Comprehensive Analysis. PLoS One 2016; 11:e0157992. [PMID: 27336669 PMCID: PMC4918979 DOI: 10.1371/journal.pone.0157992] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 06/08/2016] [Indexed: 12/18/2022] Open
Abstract
TGF-ß is a multifunctional cytokine that is involved in cell proliferation, differentiation and function. We previously reported an essential role of the TGF-ß -Smad2/3 pathways in RANKL-induced osteoclastogenesis. Using chromatin immunoprecipitation followed by sequencing, we comprehensively identified Smad2/3 target genes in bone marrow macrophages. These genes were enriched in the gene population upregulated by TGF-ß and downregulated by RANKL. Recent studies have revealed that histone modifications, such as trimethylation of histone H3 lysine 4 (H3K4me3) and lysine 27 (H3K27me3), critically regulate key developmental steps. We identified Nedd9 as a Smad2/3 target gene whose histone modification pattern was converted from H3K4me3(+)/H3K4me27(+) to H3K4me3(+)/H3K4me27(-) by TGF-ß. Nedd9 expression was increased by TGF-ß and suppressed by RANKL. Overexpression of Nedd9 partially rescued an inhibitory effect of a TGF-ß inhibitor, while gene silencing of Nedd9 suppressed RANKL-induced osteoclastogenesis. RANKL-induced osteoclastogenesis were reduced and stimulatory effects of TGF-ß on RANKL-induced osteoclastogenesis were partially abrogated in cells from Nedd9-deficient mice although knockout mice did not show abnormal skeletal phenotypes. These results suggest that Nedd9 is a Smad2/3 target gene implicated in RANKL-induced osteoclastogenesis.
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Affiliation(s)
- Yasunori Omata
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Shinya Nakamura
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takuma Koyama
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tetsuro Yasui
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Jun Hirose
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Naohiro Izawa
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takumi Matsumoto
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Yuuki Imai
- Division of Integrative Pathophysiology, Proteo-Science Center, Graduate School of Medicine, Ehime University, Ehime 791–0295, Japan
| | - Sachiko Seo
- Department of Hematology and Oncology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Mineo Kurokawa
- Department of Hematology and Oncology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Shuichi Tsutsumi
- Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
| | - Yuho Kadono
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Chikao Morimoto
- Department of Therapy Development and Innovation for Immune Disorders and Cancers, Juntendo University, Tokyo, Japan
| | - Hiroyuki Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
| | - Takeshi Miyamoto
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
- Department of Orthopedic Surgery, Keio University, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
- * E-mail:
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48
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Chang SH, Yasui T, Taketomi S, Matsumoto T, Kim-Kaneyama JR, Omiya T, Hosaka Y, Inui H, Omata Y, Yamagami R, Mori D, Yano F, Chung U, Tanaka S, Saito T. Comparison of mouse and human ankles and establishment of mouse ankle osteoarthritis models by surgically-induced instability. Osteoarthritis Cartilage 2016; 24:688-97. [PMID: 26596790 DOI: 10.1016/j.joca.2015.11.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 09/04/2015] [Accepted: 11/08/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Prevalence of ankle osteoarthritis (OA) is lower than that of knee OA, however, the molecular mechanisms underlying the difference remain unrevealed. In the present study, we developed mouse ankle OA models for use as tools to investigate pathophysiology of ankle OA and molecular characteristics of ankle cartilage. DESIGN We anatomically and histologically examined ankle and knee joints of C57BL/6 mice, and compared them with human samples. We examined joints of 8-week-old and 25-month-old mice. For experimental models, we developed three different ankle OA models: a medial model, a lateral model, and a bilateral model, by resection of respective structures. OA severity was evaluated 8 weeks after the surgery by safranin O staining, and cartilage degradation in the medial model was sequentially examined. RESULTS Anatomical and histological features of human and mouse ankle joints were comparable. Additionally, the mouse ankle joint was more resistant to cartilage degeneration with aging than the mouse knee joint. In the medial model, the tibiotalar joint was markedly affected while the subtalar joint was less degenerated. In the lateral model, the subtalar joint was mainly affected while the tibiotalar joint was less altered. In the bilateral model, both joints were markedly degenerated. In the time course of the medial model, TdT-mediated dUTP nick end labeling (TUNEL) staining and Adamts5 expression were enhanced at early and middle stages, while Mmp13 expression was gradually increased during the OA development. CONCLUSION Since human and mouse ankles are comparable, the present models will contribute to ankle OA pathophysiology and general cartilage research in future.
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Affiliation(s)
- Song Ho Chang
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - T Yasui
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - S Taketomi
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - T Matsumoto
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - J R Kim-Kaneyama
- Department of Biochemistry, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
| | - T Omiya
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Y Hosaka
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - H Inui
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Y Omata
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - R Yamagami
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - D Mori
- Bone and Cartilage Regenerative Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - F Yano
- Bone and Cartilage Regenerative Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - U Chung
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - S Tanaka
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - T Saito
- Sensory & Motor System Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; Bone and Cartilage Regenerative Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
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49
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McCarthy M, Yasui T, Felippe M, Overton T. Associations between the degree of early lactation inflammation and performance, metabolism, and immune function in dairy cows. J Dairy Sci 2016; 99:680-700. [DOI: 10.3168/jds.2015-9694] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 08/30/2015] [Indexed: 11/19/2022]
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50
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Kuno I, Hashiguchi Y, Kasai M, Fukuda T, Ichimura T, Yasui T, Sumi T. Krukenberg tumor in a 18-year-old-female: a rare case. EUR J GYNAECOL ONCOL 2016; 37:139-141. [PMID: 27048128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Krukenberg tumors mostly occur after 40 years. Metastatic ovarian tumors in young age are very rare. CASE A 18-year-old female presented with colon cancer which was accompanied by Krukenberg tumor. The present case was a very rare case of metastatic ovarian tumor in very young age. The present patient presented with abdominal pain. On examination, colon tumor was detected and bilateral ovary were almost normal with only slight swelling. During the operation for colon tumor, biopsy of bilateral ovary was performed for histopathological evaluation. Although there were no specific findings in bilateral ovary, microscopic examination revealed poorly differentiated adenocarcinoma, diffusely invading the ovarian parenchyma. Diagnosis of colon cancer was made postoperatively and ovarian Krukenberg tumor was confirmed. CONCLUSION In case of suspecting colon cancer even in very young patient with normal ovary, biopsy of ovary should be considered for the diagnosis of Krukenberg tumor.
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