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Hirata A, Hayashi A, Yamazaki S, Hanada H, Nakamura S, Ogino A. Dynamic Reconstruction Using Bilateral Lengthening Temporalis Myoplasty for Facial Palsies in Patients with Hereditary Skin Laxity. Plast Reconstr Surg Glob Open 2024; 12:e5618. [PMID: 38375370 PMCID: PMC10876247 DOI: 10.1097/gox.0000000000005618] [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: 08/10/2023] [Accepted: 01/09/2024] [Indexed: 02/21/2024]
Abstract
Hereditary skin laxity is a rare condition, some cases of which are also referred to as cutis laxa, and those involving facial skin are considered a target for treatment by plastic surgery as patients present with an aged face, which can reduce their quality of life. In some of these patients, the facial nerve and muscles may be affected, and cause weakness of mimetic muscles. We performed one-stage bilateral lengthening temporalis myoplasty reanimation, followed by lower facial contouring with partial lower lip excision and hammock-shaped fascia grafting in two patients with hereditary facial skin laxity coexisting with facial palsy. The patient was a 63-year-old woman with hereditary gelsolin amyloidosis and a 64-year-old man who was diagnosed with oculopharyngeal muscular dystrophy. Postoperatively, a symmetrical facial contour was achieved in repose, and smiling with and without biting was possible. To our knowledge, there are no reports of dynamic smile reconstruction for facial weakness in patients with hereditary facial skin laxity. Although these patients may experience progressive loss of function of the trigeminal nerve and its innervating muscles, the static suspension effect of lengthening temporalis myoplasty can be expected to continue even if the temporal muscles lose their function in the future. We believe that, with careful patient selection, dynamic reconstruction is an option for progressive facial paralysis. In this article, we present the chronological history of two patients who underwent multiple plastic surgery procedures and discuss the importance of the role of plastic surgery in improving the quality of life under these conditions.
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Affiliation(s)
- Akiko Hirata
- From the Department of Plastic and Reconstructive Surgery, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Akiteru Hayashi
- Department of Plastic and Reconstructive Surgery, Toho University Sakura Medical Center, Chiba, Japan
| | - Shun Yamazaki
- Department of Plastic and Reconstructive Surgery, Toho University Sakura Medical Center, Chiba, Japan
| | - Hayato Hanada
- From the Department of Plastic and Reconstructive Surgery, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Syogo Nakamura
- Department of Plastic and Reconstructive Surgery, Toho University Omori Medical Center, Tokyo, Japan
| | - Akihiro Ogino
- Department of Plastic and Reconstructive Surgery, Toho University Omori Medical Center, Tokyo, Japan
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Kobayashi S, Hasegawa S, Yamazaki S, Tsugane T, Takahashi S, Kaneko M, Usuda S. Changes in physical activity level during hospitalization in patients with stroke and those with fracture: a prospective longitudinal study. J Phys Ther Sci 2024; 36:33-43. [PMID: 38186966 PMCID: PMC10766402 DOI: 10.1589/jpts.36.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 10/28/2023] [Indexed: 01/09/2024] Open
Abstract
[Purpose] To examine changes in physical activity levels between admission and discharge in patients hospitalized after stroke and fracture. [Participants and Methods] Patients with stroke (n=36) or fracture (n=41) wore an accelerometer during the daytime for three days after admission and before discharge. Physical activity was divided into sedentary behavior (SB), light-intensity (LIPA), and moderate-to-vigorous (MVPA), and then compared between hospital admission and discharge using the Wilcoxon signed-rank test. The characteristics of patients with or without changes in SB during hospitalization were compared using the Mann-Whitney U test. [Results] The median LIPA time in patients after stroke and fracture increased from 107.5 and 106.7 minutes on admission to 122.0 and 127.3 minutes at discharge, and the median MVPA time increased from 2.7 and 0.7 minutes on admission to 4.2 and 2.7 minutes at discharge, respectively. In particular, LIPA in non-therapy time increased for patients both after stroke and fracture. No differences in characteristics were observed between with or without changes in SB regardless of differences in diagnoses. [Conclusion] These findings indicate that while physical activity levels increased during hospitalization, they remained below World Health Organization recommendations for MVPA, and patient characteristics alone may not account for increased activity levels.
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Affiliation(s)
- Sota Kobayashi
- Department of Rehabilitation, Public Nanokaichi Hospital:
643 Nanokaichi, Tomioka-shi, Gunma 370-2343, Japan
- Department of Rehabilitation Sciences, Gunma University
Graduate School of Health Sciences, Japan
| | - Satoshi Hasegawa
- Department of Rehabilitation, Public Nanokaichi Hospital:
643 Nanokaichi, Tomioka-shi, Gunma 370-2343, Japan
| | - Shun Yamazaki
- Department of Rehabilitation, Tomioka General Hospital,
Japan
| | - Tsubasa Tsugane
- Department of Rehabilitation, Tomioka General Hospital,
Japan
| | - Shigeru Takahashi
- Department of Rehabilitation, Public Nanokaichi Hospital:
643 Nanokaichi, Tomioka-shi, Gunma 370-2343, Japan
| | - Mieko Kaneko
- Department of Rehabilitation, Public Nanokaichi Hospital:
643 Nanokaichi, Tomioka-shi, Gunma 370-2343, Japan
| | - Shigeru Usuda
- Department of Rehabilitation Sciences, Gunma University
Graduate School of Health Sciences, Japan
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Ishikawa T, Yamazaki S, Sato R, Jimbo R, Kobayashi Y, Sato T, Iwanaga A, Sano T, Yokoyama J, Honma T. Efficacy of Adding Locoregional Therapy in Non-Complete Remission Hepatocellular Carcinoma Treated With Atezolizumab Plus Bevacizumab: A Preliminary Study. Anticancer Res 2024; 44:361-368. [PMID: 38159993 DOI: 10.21873/anticanres.16819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND/AIM Atezolizumab plus bevacizumab (Atez/Bev) therapy is extremely effective and has a high response rate in hepatocellular carcinoma (HCC) treatment. This study investigated the efficacy of adding locoregional therapy with Atez/Bev for non-complete response (CR) HCC cases. PATIENTS AND METHODS Twenty-eight HCC patients without CR during Atez/Bev therapy received locoregional therapy, and treatment efficacy was evaluated based on the modified RECIST criteria. RESULTS The study included 23 male and five female participants with a mean age of 73.5 years. In the Atez/Bev and locoregional combination therapy effective group, both transcatheter arterial chemoembolization (TACE) and radiofrequency ablation (RFA) were combined in all patients. A significant reduction in neutrophil-to-lymphocyte ratio (NLR) was observed after adding locoregional therapy (p=0.039). Moreover, a combination of TACE and RFA was performed in all patients of the CR group. When assessing the add-on effect of the combination of TACE and RFA in the progressive disease (PD) group, seven patients were found to achieve non-PD. For patients who did not achieve PD, a significant NLR reduction was noted after the addition of locoregional therapy. CONCLUSION Adding locoregional therapy such as TACE/RFA was found to exert an effect even in non-CR patients who had received Atez/Bev therapy. A reduction in NLR after locoregional therapy was noted. Even when a response is not obtained during Atez/Bev therapy, it is important to avail the option to add locoregional therapy, as it may contribute to improved prognosis via immune modulation with tolerable adverse reactions.
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Affiliation(s)
- Toru Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Shun Yamazaki
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Ryo Sato
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Ryo Jimbo
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Yuji Kobayashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Toshifumi Sato
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Akito Iwanaga
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Tomoe Sano
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Junji Yokoyama
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Terasu Honma
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
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Watanabe Y, Osaki A, Yamazaki S, Yokoyama H, Takaku K, Sato M, Sato D, Yokoyama N, Waguri N, Terai S. Two Cases of Gastric Varices with Left-sided Portal Hypertension Due to Essential Thrombocythemia Treated with Gastric Devascularization or Partial Splenic Embolization. Intern Med 2023; 62:2839-2846. [PMID: 36823082 PMCID: PMC10602822 DOI: 10.2169/internalmedicine.1273-22] [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: 11/11/2022] [Accepted: 01/10/2023] [Indexed: 02/25/2023] Open
Abstract
Left-sided portal hypertension (LSPH) is a condition of extrahepatic portal hypertension that often results in bleeding from isolated gastric varices (GVs). LSPH is sometimes caused by myeloproliferative diseases, such as essential thrombocythemia (ET). We herein report two cases of GVs with LSPH due to ET that were successfully controlled by gastric devascularization (GDS) or partial splenic embolization (PSE). Since each patient with LSPH due to ET has a different pathology, optimal treatment should be performed depending on the patient's condition, such as platelet counts, hemodynamics, or the prognosis. We believe that these cases will serve as a reference for future cases.
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Affiliation(s)
- Yusuke Watanabe
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Japan
- Division of Preemptive Medicine for Digestive Disease and Healthy Active Life, School of Medicine, Niigata University, Japan
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Akihiko Osaki
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Japan
| | - Shun Yamazaki
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Japan
| | - Hanako Yokoyama
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Japan
| | - Kenichi Takaku
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Japan
| | - Munehiro Sato
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Japan
| | - Daisuke Sato
- Department of Surgery, Niigata City General Hospital, Japan
| | | | - Nobuo Waguri
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
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Ishikawa T, Hasegawa I, Hirosawa H, Honmou T, Sakai N, Igarashi T, Yamazaki S, Kobayashi T, Sato T, Iwanaga A, Sano T, Yokoyama J, Honma T. Comparison of Ablation Volume Between Emprint ® and Mimapro ® Systems for Hepatocellular Carcinoma -A Preliminary Study. J Hepatocell Carcinoma 2023; 10:979-985. [PMID: 37377842 PMCID: PMC10292608 DOI: 10.2147/jhc.s412642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
Background Microwave ablation (MWA) is a standard percutaneous local therapy for hepatocellular carcinoma (HCC). Next-generation MWA is reported to create a more spherical ablation zone than radiofrequency ablation (RFA). We compared the ablation zone and aspect ratio of two 2.45 GHz MWA ablation probes; Emprint® (13G) and Mimapro® (17G). We compared the ablation zone to the applied energy after MWA in patients with hepatocellular carcinoma (HCC). Furthermore, we investigated local recurrence. Materials and Methods We included 20 patients with HCC, with an average tumour diameter of 33.2 ± 12.2 mm, who underwent MWA using Emprint®, and 9 patients who underwent MWA using Mimapro® with an average tumour diameter of 31.1 ± 10.5 mm. Both groups underwent the same ablation protocol using the same power settings. The images obtained after MWA showed the treatment ablation zone and aspect ratio, which were measured and compared using three-dimensional image analysis software. Results The aspect ratios in the Emprint® and Mimapro® groups were 0.786 ± 0.105 and 0.808 ± 0.122, respectively, with no significant difference (p = 0.604). The ablation time was significantly shorter in the Mimapro® group than in the Emprint® group, and there was no significant difference in the frequency of popping or the ablation volume. There were no significant differences in local recurrence between the two groups. Conclusion There was no significant difference in the aspect ratios of the ablation diameter, and the ablation zone was almost spherical in both cases. Mimapro® at 17G was less invasive than Emprint® at 13G.
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Affiliation(s)
- Toru Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Iori Hasegawa
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Hiroshi Hirosawa
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Tsubasa Honmou
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Nobuyuki Sakai
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Takanori Igarashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Shun Yamazaki
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Takamasa Kobayashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Toshifumi Sato
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Akito Iwanaga
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Tomoe Sano
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Junji Yokoyama
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Terasu Honma
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
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Ishikawa T, Terai N, Igarashi T, Yamazaki S, Kobayashi T, Sato T, Iwanaga A, Sano T, Yokoyama J, Honma T. Effects of body composition and liver function after long-term pemafibrate treatment on dyslipidemia-associated non-alcoholic fatty liver disease. Clin Exp Hepatol 2023; 9:172-178. [PMID: 37502434 PMCID: PMC10369653 DOI: 10.5114/ceh.2023.127813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 05/14/2023] [Indexed: 07/29/2023] Open
Abstract
Aim of the study Owing to the association between non-alcoholic fatty liver disease (NAFLD) and dyslipidemia, there is a need for new treatment strategies to manage both conditions concomitantly. Our aim in this study was to evaluate the effectiveness of pemafibrate in alleviating dyslipidemia-associated NAFLD, including the evaluation of its effects on liver function and body composition. Material and methods The study sample included 67 patients with dyslipidemia-associated NAFLD (29 males, mean age 65.7 years [range, 58.4-73.7]) who were administered pemafibrate continuously for a period of at least 12 months, between June 2019 and January 2022. Outcomes were the change in body composition indices (visceral adipose tissue index - VATI, subcutaneous adipose tissue index - SATI, and skeletal muscle index - SMI), lipid biochemistry, and liver function, reserve, and fibrosis score, from baseline to the 12-month time point of pemafibrate treatment. Results Pemafibrate treatment improved liver function (alanine aminotransferase, aspartate aminotransferase, g-glutamyl transpeptidase, and alkaline phosphatase), and lipid biochemistry (triglycerides and total cholesterol). Improvements in ferritin and hepatic reserve (Mac-2 binding protein, albumin-to-bilirubin score, and NAFLD fibrosis score) were also observed, as well as a decrease in SATI. Conclusions Pemafibrate improved dyslipidemia, liver function, and hepatic reserve. The positive effects of pemafibrate on body composition likely contributed to the improvements in liver function. Longer-term treatment may be necessary to influence VATI and thus to further evaluate the relationship between improved body composition and NAFLD with pemafibrate treatment.
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Affiliation(s)
- Toru Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Nanako Terai
- Department of Radiography, Saiseikai Niigata Hospital, Niigata, Japan
| | - Takanori Igarashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Shun Yamazaki
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Takamasa Kobayashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Toshifumi Sato
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Akito Iwanaga
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Tomoe Sano
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Junji Yokoyama
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Terasu Honma
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
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Ishikawa T, Hasegawa I, Hirosawa H, Honmou T, Sakai N, Igarashi T, Yamazaki S, Kobayashi T, Sato T, Iwanaga A, Sano T, Yokoyama J, Honma T. Ex Vivo Experimental Study of the Ablation Area of Bovine Liver Using STARmed Radiofrequency Ablation. In Vivo 2023; 37:1047-1051. [PMID: 37103092 DOI: 10.21873/invivo.13179] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 03/31/2023] [Accepted: 04/07/2023] [Indexed: 04/28/2023]
Abstract
BACKGROUND/AIM Ablating a spherical area during hepatocellular carcinoma ablation therapy is a very important issue. We aimed to determine the ablation area of bovine liver using various radiofrequency ablation (RFA) protocols. MATERIALS AND METHODS Bovine liver (1-2 kg) was placed in an aluminum tray, which was punctured with STARmed VIVA 2.0 17-gauge (G) and 15-G electrodes using a current-carrying tip. Under the step-up or linear method, with an ablation time up to one break and RFA output stop, the size of the color change area (representing the thermally coagulated area) of the bovine liver was measured along the vertical and horizontal axes, and the ablated volume and total heat generated were calculated. RESULTS 5-W per minute increases protocol resulted in greater horizontal and vertical diameters of the ablated area than 10-W per minute increases protocol under the step-up method. For 5-W and 10-W per minute increases under the step-up method, the aspect ratio was 0.81 and 0.67 with a 17-G electrode, and 0.73 and 0.69 with a 15-G electrode, respectively. For 5-W and 10-W increases under the linear method, the aspect ratio was 0.89 and 0.82, respectively. Sufficient ablation was obtained, with vertical and horizontal diameters of 50 mm and 43.50 mm, respectively. Although the ablation time was long, the watt output value at the break and average watt value were low. CONCLUSION Gradual increase in output (5 W) using the step-up method yielded a more spherical ablation area, and longer ablation time in the linear method with a 15-G electrode could result in a more spherical ablation area in real clinical practice in humans. Future studies should examine concerns regarding long ablation times.
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Affiliation(s)
- Toru Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan;
| | - Iori Hasegawa
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Hiroshi Hirosawa
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Tsubasa Honmou
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Nobuyuki Sakai
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Takanori Igarashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Shun Yamazaki
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Takamasa Kobayashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Toshifumi Sato
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Akito Iwanaga
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Tomoe Sano
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Junji Yokoyama
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Terasu Honma
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
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Ishikawa T, Hasegawa I, Hirosawa H, Honmou T, Sakai N, Igarashi T, Yamazaki S, Kobayashi T, Sato T, Iwanaga A, Sano T, Yokoyama J, Honma T. An Investigation of Popping During Radiofrequency Ablation After Lenvatinib Administration for Hepatocellular Carcinoma. In Vivo 2023; 37:836-840. [PMID: 36881054 PMCID: PMC10026646 DOI: 10.21873/invivo.13150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 03/08/2023]
Abstract
BACKGROUND/AIM Lenvatinib is available as a molecular target agent for hepatocellular carcinoma (HCC). In this study, we investigated the popping phenomena in patients with HCC who underwent radiofrequency ablation (RFA) after taking lenvatinib. PATIENTS AND METHODS Fifty-nine patients with HCC between 21-30 mm in diameter and no history of systemic treatment were enrolled in the study. The patients underwent RFA using a VIVA RFA SYSTEM with an ablation tip of 30 mm in length. For the initial lenvatinib administration, 16 patients had an adequate course of treatment and were treated with RFA as add-on therapy (combination group). The other 43 patients were treated by RFA monotherapy (monotherapy group). The popping frequency during RFA was recorded and compared. RESULTS Popping frequency in the combination group (RFA combined with lenvatinib) was significantly higher than that in the monotherapy group. There was no significant difference between the combination group and the monotherapy group in ablation time, maximum output level, tumour temperature after ablation, or initial resistance value. CONCLUSION Popping frequency was significantly higher in the combination group. It is possible that the intra-tumour temperature increased rapidly during RFA in the combination group due to the inhibitory effect of lenvatinib on tumour angiogenesis, leading to the occurrence of popping. Further studies are needed to investigate popping after RFA, and precise protocols need to be developed.
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Affiliation(s)
- Toru Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan;
| | - Iori Hasegawa
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Hiroshi Hirosawa
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Tsubasa Honmou
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Nobuyuki Sakai
- Department of Clinical Engineering, Saiseikai Niigata Hospital, Niigata, Japan
| | - Takanori Igarashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Shun Yamazaki
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Takamasa Kobayashi
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Toshifumi Sato
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Akito Iwanaga
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Tomoe Sano
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Junji Yokoyama
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - Terasu Honma
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
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Watanabe Y, Osaki A, Yamazaki S, Yamazaki H, Kimura K, Takaku K, Sato M, Waguri N, Terai S. Two cases of portal-systemic encephalopathy caused by multiple portosystemic shunts successfully treated with percutaneous transhepatic obliteration. Clin J Gastroenterol 2022; 15:968-974. [DOI: 10.1007/s12328-022-01671-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 06/24/2022] [Indexed: 11/29/2022]
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Yamazaki S. T122 Better quality management and greater operating efficiency with GEM® PREMIER™ 5000 with intelligent quality management 2 (IQM®2) at Yokosuka General Hospital, Uwamachi (Kanagawa, Japan). Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.590] [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: 11/03/2022]
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Takaya K, Shido H, Yamazaki S. New Method for Umbilicoplasty with Bilateral Square Flap and Caudal Deep Inferior Epigastric Artery Perforator Flap. Eplasty 2022; 22:e8. [PMID: 35518190 PMCID: PMC9038228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND The navel is an important cosmetic feature of the abdomen. A vertically long navel with a deep caudal side has recently been preferred by patients. Currently, there is no plastic surgery technique for complete umbilical repositioning or plasty after umbilical keloid resection. This study aimed to examine the effect of a new umbilicoplasty by combining a bilateral square flap with a triangular flap that utilizes the excess caudal skin nourished by the deep inferior epigastric artery perforator. METHODS A total of 23 patients underwent umbilical keloid resection and new umbilicoplasty between April 2018 and March 2020. The mean patient age was 48.2 (range: 36-68) years, and mean body mass index was 23.1 (range: 18.5-33.4). Satisfaction with umbilical morphology was evaluated on a 5-point scale through interviews. RESULTS The surgery resulted in forming a vertically elongated deep caudal umbilical fossa. All patients were satisfied with their umbilical morphology (mean score, 4.6). In one case involving a woman who underwent breast reconstruction with a deep inferior epigastric artery perforator flap, superficial necrosis of the triangular flap was observed. However, no other complications were observed. CONCLUSIONS Creating a flap with stable blood circulation using the tissue originally excised during umbilical surgery allowed for the reproduction of a desirable umbilical morphology with adequate verticality and caudal depth.
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Affiliation(s)
- Kento Takaya
- Keio University Hospital, Keio Gijuku Daigaku Byoin,
Shinjuku-ku, Tokyo Japan
| | | | - Shun Yamazaki
- Yamato Municipal Hospital, Yamato-shi, Kanagawa,
Japan
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12
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Isozaki Y, Higashiharaguchi S, Kaenko N, Yamazaki S, Taniguchi T, Takashi K, Ueda Y, Motokawa R. Polymer Photonic Crystals Prepared by Triblock Copolymerization-Induced in situ Microphase Separation. CHEM LETT 2022. [DOI: 10.1246/cl.220089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuka Isozaki
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Seiya Higashiharaguchi
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Naoya Kaenko
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Shun Yamazaki
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Tatsuo Taniguchi
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Karatsu Takashi
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Yuki Ueda
- Materials Sciences Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Ibaraki 319-1195, Japan
| | - Ryuhei Motokawa
- Materials Sciences Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Ibaraki 319-1195, Japan
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13
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Waguri N, Osaki A, Watanabe Y, Matsubara T, Yamazaki S, Yokoyama H, Kimura K, Wakabayashi T, Mito M, Yakubo S, Azumi R, Kohisa J, Takaku K, Sato M, Furukawa K. Balloon-occluded retrograde transvenous obliteration for gastric varices improves hepatic functional reserve in long-term follow-up. JGH Open 2021; 5:1328-1334. [PMID: 34950775 PMCID: PMC8674543 DOI: 10.1002/jgh3.12675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/19/2021] [Revised: 10/22/2021] [Accepted: 11/01/2021] [Indexed: 12/17/2022]
Abstract
Background and Aim Balloon‐occluded retrograde transvenous obliteration (BRTO) has been widely adopted for the management of gastric fundal varices (GVs). There are a few reports that BRTO leads to the improvement of mid‐term and long‐term hepatic functional reserve (HFR). We retrospectively investigated the long‐term effect on HFR and prognosis among patients who had undergone BRTO for GVs. Methods This single‐center, retrospective study included 57successful patients out of 60 patients who underwent BRTO for GVs from December 2005 to September 2018. We examined the indicators of HFR (e.g., encephalopathy and ascites statuses, serum total bilirubin and albumin levels, % prothrombin time, and Child–Pugh and albumin–bilirubin [ALBI] scores) during 3 years of follow‐up after BRTO. We analyzed survival using the Kaplan–Meier method and identified the independent prognostic factors via multivariate analyses. Results GVs disappeared in all patients who were successfully treated by BRTO. At 3 years after BRTO, serum albumin levels were significantly elevated (from 3.3 to 4.0 g/dL, P = 0.008), while Child–Pugh and ALBI scores were significantly decreased (from 7.0 to 5.7, P = 0.043, and from −1.94 to −2.60, P = 0.006, respectively). The median survival time among all patients was 2207 days; the survival rates after BRTO were 87.0% at 1 year, 81.8% at 3 years, 67.3% at 5 years, and 44.1% at 10 years. Multivariate analyses revealed that ascites, hepatic encephalopathy, and malignant neoplasms were independently associated with poor prognosis. Conclusion BRTO for GVs has a favorable effect on long‐term HFR.
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Affiliation(s)
- Nobuo Waguri
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Akihiko Osaki
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Yusuke Watanabe
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Tsuyoshi Matsubara
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Shun Yamazaki
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Hanako Yokoyama
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Kiwamu Kimura
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Takuya Wakabayashi
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Masaki Mito
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Shunta Yakubo
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Rie Azumi
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Junji Kohisa
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Kennichi Takaku
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Munehiro Sato
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
| | - Kouichi Furukawa
- Department of Gastroenterology and Hepatology Niigata City General Hospital Niigata Japan
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Watanabe Y, Yamazaki S, Yokoyama H, Yakubo S, Osaki A, Takaku K, Sato M, Waguri N, Terai S. A Rare Case of Recurrent Generalized Peritonitis Caused by Spontaneous Urinary Bladder Rupture after Radiotherapy: A Case Report and Literature Review. Medicines 2021; 8:medicines8110067. [PMID: 34822364 PMCID: PMC8617802 DOI: 10.3390/medicines8110067] [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] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/27/2021] [Accepted: 11/02/2021] [Indexed: 11/16/2022]
Abstract
Since generalized peritonitis is a fatal disease, accurate diagnosis and treatment are important. In this paper, we report a case of recurrent generalized peritonitis associated with spontaneous urinary bladder rupture (SBR). A 65 year old woman, who underwent radiotherapy 21 years prior, was diagnosed with generalized peritonitis. Although the cause of the generalized peritonitis could not be identified, the patient recovered with conservative treatment in short period. However, recurrent episodes of generalized peritonitis occurred four times. We diagnosed the patient with urinary ascites due to SBR, based on a history of radiotherapy and dysuria. No recurrence of generalized peritonitis had occurred after accurate diagnosis and treatment with long-term bladder catheter placement. Since SBR often occurs as a late complication after radiotherapy, it is difficult to diagnose SBR, which leads to delayed treatment. This case and literature review of similar cases suggest that the information of the following might be helpful in the diagnosis of SBR: (i) history of recurrent generalized peritonitis, (ii) pseudo-renal failure, (iii) history of radiotherapy, (iv) dysuria, and (v) increase or decrease of ascites in a short period. It is important to list SBR in the differential diagnosis by knowing the disease and understanding its clinical features. This case and literature review will serve as a reference for future practices.
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Affiliation(s)
- Yusuke Watanabe
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata 950-1141, Japan; (S.Y.); (H.Y.); (S.Y.); (A.O.); (K.T.); (M.S.); (N.W.)
- Division of Preemptive Medicine for Digestive Disease and Healthy Active Life, School of Medicine, Niigata University, Niigata 951-8510, Japan
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8520, Japan;
- Correspondence: ; Tel.: +81-25-227-2207; Fax: +81-25-227-0776
| | - Shun Yamazaki
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata 950-1141, Japan; (S.Y.); (H.Y.); (S.Y.); (A.O.); (K.T.); (M.S.); (N.W.)
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8520, Japan;
| | - Hanako Yokoyama
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata 950-1141, Japan; (S.Y.); (H.Y.); (S.Y.); (A.O.); (K.T.); (M.S.); (N.W.)
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8520, Japan;
| | - Shunta Yakubo
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata 950-1141, Japan; (S.Y.); (H.Y.); (S.Y.); (A.O.); (K.T.); (M.S.); (N.W.)
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8520, Japan;
| | - Akihiko Osaki
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata 950-1141, Japan; (S.Y.); (H.Y.); (S.Y.); (A.O.); (K.T.); (M.S.); (N.W.)
| | - Kenichi Takaku
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata 950-1141, Japan; (S.Y.); (H.Y.); (S.Y.); (A.O.); (K.T.); (M.S.); (N.W.)
| | - Munehiro Sato
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata 950-1141, Japan; (S.Y.); (H.Y.); (S.Y.); (A.O.); (K.T.); (M.S.); (N.W.)
| | - Nobuo Waguri
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata 950-1141, Japan; (S.Y.); (H.Y.); (S.Y.); (A.O.); (K.T.); (M.S.); (N.W.)
| | - Shuji Terai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8520, Japan;
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Takayama T, Yamazaki S, Matsuyama Y, Midorikawa Y, Shiina S, Izumi N, Hasegawa K, Kokudo N, Sakamoto M, Kubo S, Kudo M, Murakami T, Nakashima O. Prognostic grade for resecting hepatocellular carcinoma: multicentre retrospective study. Br J Surg 2021; 108:412-418. [PMID: 33793713 DOI: 10.1093/bjs/znaa109] [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] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/31/2020] [Accepted: 11/03/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Surgical treatment for hepatocellular carcinoma (HCC) is advancing, but a robust prediction model for survival after resection is not available. The aim of this study was to propose a prognostic grading system for resection of HCC. METHODS This was a retrospective, multicentre study of patients who underwent first resection of HCC with curative intent between 2000 and 2007. Patients were divided randomly by a cross-validation method into training and validation sets. Prognostic factors were identified using a Cox proportional hazards model. The predictive model was built by decision-tree analysis to define the resection grades, and subsequently validated. RESULTS A total of 16 931 patients from 795 hospitals were included. In the training set (8465 patients), four surgical grades were classified based on prognosis: grade A1 (1236 patients, 14.6 per cent; single tumour 3 cm or smaller and anatomical R0 resection); grade A2 (3614, 42.7 per cent; single tumour larger than 3 cm, or non-anatomical R0 resection); grade B (2277, 26.9 per cent; multiple tumours, or vascular invasion, and R0 resection); and grade C (1338, 15.8 per cent; multiple tumours with vascular invasion and R0 resection, or R1 resection). Five-year survival rates were 73.9 per cent (hazard ratio (HR) 1.00), 64.7 per cent (HR 1.51, 95 per cent c.i. 1.29 to 1.78), 50.6 per cent (HR 2.53, 2.15 to 2.98), and 34.8 per cent (HR 4.60, 3.90 to 5.42) for grades A1, A2, B, and C respectively. In the validation set (8466 patients), the grades had equivalent reproducibility for both overall and recurrence-free survival (all P < 0.001). CONCLUSION This grade is used to predict prognosis of patients undergoing resection of HCC.
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Affiliation(s)
- T Takayama
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - S Yamazaki
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Y Matsuyama
- Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan
| | - Y Midorikawa
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - S Shiina
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
| | - N Izumi
- Department of Gastroenterology, Musashino Red Cross Hospital, Tokyo, Japan
| | - K Hasegawa
- Department of Hepato-biliary-pancreatic Surgery, School of Medicine, University of Tokyo, Tokyo, Japan
| | - N Kokudo
- Department of Hepato-biliary-pancreatic Surgery, National Center for Global Health and Medicine, Tokyo, Japan
| | - M Sakamoto
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - S Kubo
- Department of Hepato-biliary-pancreatic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Kudo
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, Osaka-Sayama, Japan
| | - T Murakami
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - O Nakashima
- Department of Clinical Laboratory Medicine, Kurume University Hospital, Kurume, Japan
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Yamazaki S, Hirano I, Kato K, Yamamoto M, Suzuki N. Defining the functionally sufficient regulatory region and liver-specific roles of the erythropoietin gene by transgene complementation. Life Sci 2021; 269:119075. [PMID: 33465391 DOI: 10.1016/j.lfs.2021.119075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/24/2020] [Accepted: 01/08/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND Erythropoietin (EPO) is an essential growth factor for erythroid cells and is mainly secreted from the kidneys and subsidiarily from the livers of adult mammals in an anemia/hypoxia-inducible manner. AIM AND METHOD To elucidate the regulatory mechanisms of stress-inducible and cell type-specific Epo gene transcription, the rate-limiting step of EPO production, we investigated the sufficiency of a 180-kb genomic fragment flanking the mouse Epo gene locus for recapitulating endogenous Epo gene function by a transgene complementation strategy. KEY FINDINGS While Epo gene-deficient mice exhibited lethal anemia in utero with defects in erythroblast proliferation and maturation, Epo-knockout mice integrated with the 180-kb Epo transgene showed normal erythropoiesis throughout life. In the transgene-rescued mice, liver-specific deletion of the transgene by the Cre-loxP recombination system caused neonatal anemia with erythropoietic defects in the liver but not in the spleen, indicating the essential function of hepatic EPO on normal erythropoiesis in the liver, which is the major erythropoietic site in late embryonic and neonatal stages. SIGNIFICANCE These results demonstrate that the 180 kb Epo gene flanking region contains the fully functional Epo gene unit and that EPO from the liver dominantly stimulates hepatic erythropoiesis but contributes less to erythropoiesis in other organs.
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Affiliation(s)
- Shun Yamazaki
- Division of Oxygen Biology, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan; Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Ikuo Hirano
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Koichiro Kato
- Division of Oxygen Biology, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masayuki Yamamoto
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Norio Suzuki
- Division of Oxygen Biology, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
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Engler MJ, Mimura J, Yamazaki S, Itoh K. JDP2 is directly regulated by ATF4 and modulates TRAIL sensitivity by suppressing the ATF4-DR5 axis. FEBS Open Bio 2020; 10:2771-2779. [PMID: 33108704 PMCID: PMC7714084 DOI: 10.1002/2211-5463.13017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 02/06/2023] Open
Abstract
Jun dimerization protein 2 (JDP2) is a bZip‐type transcription factor, which acts as a repressor or activator of several cellular processes, including cell differentiation and chromatin remodeling. Previously, we found that a stress‐responsive transcription factor, known as activating transcription factor 4 (ATF4), enhances JDP2 gene expression in human astrocytoma U373MG and cervical cancer HeLa cells; however, the role of JDP2 in the ATF4‐mediated stress response remained unclear. Here, we reported that siRNA‐mediated JDP2 knockdown enhances the expression of several ATF4 target genes, including ASNS, and death receptors 4 and 5 (DR4 and DR5) in HeLa cells. In addition, the results of a transient reporter assay indicate that JDP2 overexpression represses ER stress‐mediated DR5 promoter activation suggesting that JDP2 negatively regulates ATF4‐mediated gene expression. Curiously, knockdown of JDP2 increases the sensitivity of cells to TNF‐related apoptosis‐inducing ligand (TRAIL), which induces apoptosis in cancer cells through DR4 and DR5. These results indicate that JDP2 functions as a negative feedback regulator of the ATF4 pathway and contributes to TRAIL resistance in cancer cells.
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Affiliation(s)
- Máté János Engler
- Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, Japan
| | - Junsei Mimura
- Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, Japan
| | - Shun Yamazaki
- Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, Japan
| | - Ken Itoh
- Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, Japan
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Kuba R, Shimizu Y, Kitabata R, Yamazaki S. Posterior external jugular vein: a useful alternative recipient vessel in head and neck free flap reconstructions. Eur J Plast Surg 2020. [DOI: 10.1007/s00238-020-01677-1] [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: 11/30/2022]
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Michikawa T, Yamazaki S, Shimizu A, Nitta H, Kato K, Nishiwaki Y, Morokuma S. Exposure to Asian dust within a few days of delivery is associated with placental abruption in Japan: a case-crossover study. BJOG 2019; 127:335-342. [PMID: 31654606 DOI: 10.1111/1471-0528.15999] [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] [Accepted: 10/21/2019] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Asian dust is a natural phenomenon in which dust particles are transported from desert areas in China and Mongolia to East Asia. Short-term exposure to Asian dust has been associated with cardiovascular disease through mechanisms such as systemic inflammation. Because inflammation is a potential trigger of placental abruption, exposure may also lead to abruption. We examined whether exposure to Asian dust was associated with abruption. DESIGN A bi-directional, time-stratified case-crossover design. SETTING AND POPULATION From the Japan Perinatal Registry Network database, we identified 3014 patients who delivered singleton births in hospitals in nine Japanese prefectures from 2009 to 2014 with a diagnosis of placental abruption. METHODS Asian dust levels were measured at Light Detection and Ranging monitoring stations, and these measurements were used to define the Asian dust days. As there was no information on the onset day of abruption, we assumed this day was the day before delivery (lag1). MAIN OUTCOME MEASURES Placental abruption. RESULTS During the study period, the Asian dust days ranged from 15 to 71 days, depending on the prefecture. The adjusted odds ratio of placental abruption associated with exposure to Asian dust was 1.4 (95% confidence interval = 1.0, 2.0) for cumulative lags of 1-2 days. Even after adjustment for co-pollutant exposures, this association did not change substantially. CONCLUSIONS In this Japanese multi-area study, exposure to Asian dust was associated with an increased risk of placental abruption. TWEETABLE ABSTRACT Exposure to environmental factors such as Asian dust may be a trigger of placental abruption.
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Affiliation(s)
- T Michikawa
- Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan.,Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - S Yamazaki
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - A Shimizu
- Centre for Regional Environmental Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - H Nitta
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - K Kato
- Department of Obstetrics and Gynaecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Nishiwaki
- Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan
| | - S Morokuma
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Kadowaki S, Yamazaki S, Kotani Y, Tsuji T, Sakoda N, Kobayashi Y, Horio N, Goto T, Muraoka G, Ozawa S, Suezawa T, Kuroko Y, Tateishi A, Shimizu S, Kasahara S. P1833The c-fos mRNA expression reveals persistent myocardial stretch in the right ventricle during asphyxiated cardiac arrest. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Donation after circulatory death (DCD) heart transplantation has been debated over the past decades because of the shortage of donor. The right ventricular dysfunction is one of the remaining problems for clinical implication of DCD heart transplantation. DCD hearts suffering from the volume overload have a potential to aggravate the right ventricular dysfunction after heart transplantation. The c-fos mRNA is one of the “immediate” response genes to mechanical stresses, such as myocardial cell stretch, without neural and humoral factors. In this study, we assessed myocardial stretch during asphyxiated cardiac arrest using c-fos mRNA expression.
Purpose
The purpose of this study is to reveal the impact of right ventricular volume overload during asphyxiated cardiac arrest.
Methods
Male Wistar rats (8 weeks of age, n=18) were anesthetized with paralyzed ventilation. The trachea was dissected and ligated to initiate asphyxiation. Hearts were harvested at 3 time points: 0, 15 and 30 minutes after termination of the ventilation. Free walls of right and left ventricle were sectioned and immersed in RNA stabilization solution as soon as possible. Total RNA was extracted from these tissues using a guanidine thiocyanate-phenol-chloroform method and cDNA was synthesized using a reverse transcriptase. Next, we measured the quantified expression level by using the droplet digital PCR method with a probe and primers for c-fos gene. Expression of c-fos level was divided by extracted TATA binding protein (TBP) level as a control marker, the ratio of c-fos and TBP was used in analysis.
Results
In the left ventricle, the expression of c-fos rapidly increased by 15 minutes (0.81±0.24 (c-fos/TBP), p<0.05 by one-way ANOVA followed by the Dunnett's test) compared to at 0 minutes (0.21±0.06), but the expression level recovered to the baseline level at 30 minutes after termination of the ventilation (0.19±0.03). On the other hand, in the right ventricle, the c-fos expression was gradually elevated and peaked at 30 minutes (0.88±0.20, p<0.05 by the Dunnett's test) compared to at 0 minutes (0.22±0.05).
Conclusion
These results suggest that the volume overload to the right ventricle during asphyxiated cardiac arrest prolongs compared to that to the left ventricle, which may cause the right ventricular dysfunction after DCD heart transplantation.
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Affiliation(s)
| | - S Yamazaki
- National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Y Kotani
- Okayama University, Okayama, Japan
| | - T Tsuji
- Okayama University, Okayama, Japan
| | - N Sakoda
- Okayama University, Okayama, Japan
| | | | - N Horio
- Okayama University, Okayama, Japan
| | - T Goto
- Okayama University, Okayama, Japan
| | | | - S Ozawa
- Okayama University, Okayama, Japan
| | | | - Y Kuroko
- Okayama University, Okayama, Japan
| | | | - S Shimizu
- National Cerebral and Cardiovascular Center, Osaka, Japan
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Numata S, Keiichi I, Yamazaki S, Kanda K, Yaku H. P1826Computational fluid dynamic analysis of acute aortic dissection. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Mechanism of acute aortic dissection still is not well understood. It is very difficult to predict where, when, and how acute aortic dissection occurs. This time we focused on blood flow velocity (FV), wall shear stress (WSS), and oscillatory shear index (OSI) which is three dimensional fluctuations of WSS inside ascending aorta. It is well recognized that a higher or lower WSS may cause intimal dysfunction, which could result in the progression of atherosclerosis. Furthermore, because of the non-slip boundary mechanical equilibrium of forces, WSS will separate the inner and outer layers of the aorta. This sheer force could stress the medial tissue and result in degeneration. OSI has been reported as important hemodynamic parameter that is highly associated with the progression of atherosclerosis by inducing radical oxygen production of the endothelial cells. Therefore, OSI may be more closely associated with the degeneration of the media in comparison with WSS. This time FV, WSS, and OSI was evaluated using computational fluid dynamics to identify the location of acute aortic dissection entry.
Method
Using computed tomography data of three patients (Case A, B, C) who had acute aortic dissection, each three pre-dissection aorta model was made. Computer simulation images of four dimensional pulsatile blood flow was made and pulsatile cardiac flow from one cardiac cycle was simulated. A three-dimensional movie was made to evaluate FV, WSS, and OSI. One normal size aorta was evaluated as a control.
Results
In control, blood flow inside ascending aorta was laminar, on the contrary, spiral flow was observed in three dissection cases. FV was slightly higher in dissection case (control: 0.56m/s, A: 0.77m/s, B: 1.05m/s, C: 0.35m/s). Maximum WSS in ascending aorta was 3.24Pa in control. In dissection cases, there was patchy high (A: 18.6Pa, B: 25.6Pa, C: 4.0Pa,) WSS lesion in ascending aorta. In case A and B, these patchy high lesions are close to the entry site. In all three dissection case, OSI was high around entry site.
Figure 1
Conclusion
According to our computer simulation, patchy high WSS and high OSI lesion is related with acute dissection entry site at the ascending aorta.
Acknowledgement/Funding
None
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Affiliation(s)
- S Numata
- Kyoto Prefectural University of Medicine, Cardiovascular surgery, Kyoto, Japan
| | - I Keiichi
- Kyoto Prefectural University of Medicine, Cardiovascular surgery, Kyoto, Japan
| | - S Yamazaki
- Kyoto Prefectural University of Medicine, Cardiovascular surgery, Kyoto, Japan
| | - K Kanda
- Kyoto Prefectural University of Medicine, Cardiovascular surgery, Kyoto, Japan
| | - H Yaku
- Kyoto Prefectural University of Medicine, Cardiovascular surgery, Kyoto, Japan
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22
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Sekiguchi A, Fujiwara C, Yamazaki S, Inoue Y, Uchiyama A, Akai R, Iwawaki T, Ishikawa O, Motegi S. 015 Inhibitory effect of kaempferol on skin fibrosis in systemic sclerosis by the suppression of oxidative stress. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.018] [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: 10/26/2022]
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23
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Shimbo T, Yamazaki S, Kitayama T, Ouchi Y, Yamamoto R, Takaki E, Bruckner-Tuderman L, Uitto J, Kaneda Y, Tamai K. 579 Single cell transcriptome and epigenome analyses in a murine model of dystrophic epidermolysis bullosa. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Watanabe T, Yamazaki S, Yoneda N, Shinohara H, Tomioka I, Higuchi Y, Yagoto M, Ema M, Suemizu H, Kawai K, Sasaki E. Highly efficient induction of primate iPS cells by combining RNA transfection and chemical compounds. Genes Cells 2019; 24:473-484. [PMID: 31099158 PMCID: PMC6852476 DOI: 10.1111/gtc.12702] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/13/2019] [Accepted: 05/13/2019] [Indexed: 12/30/2022]
Abstract
Induced pluripotent stem (iPS) cells hold great promise for regenerative medicine and the treatment of various diseases. Before proceeding to clinical trials, it is important to test the efficacy and safety of iPS cell‐based treatments using experimental animals. The common marmoset is a new world monkey widely used in biomedical studies. However, efficient methods that could generate iPS cells from a variety of cells have not been established. Here, we report that marmoset cells are efficiently reprogrammed into iPS cells by combining RNA transfection and chemical compounds. Using this novel combination, we generate transgene integration‐free marmoset iPS cells from a variety of cells that are difficult to reprogram using conventional RNA transfection method. Furthermore, we show this is similarly effective for human and cynomolgus monkey iPS cell generation. Thus, the addition of chemical compounds during RNA transfection greatly facilitates reprogramming and efficient generation of completely integration‐free safe iPS cells in primates, particularly from difficult‐to‐reprogram cells.
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Affiliation(s)
| | - Shun Yamazaki
- Central Institute for Experimental Animals, Kawasaki, Japan
| | - Nao Yoneda
- Central Institute for Experimental Animals, Kawasaki, Japan
| | | | - Ikuo Tomioka
- Laboratory of Applied Reproductive Science, Faculty of Agriculture, Shinshu University, Matsumoto, Japan
| | | | - Mika Yagoto
- Central Institute for Experimental Animals, Kawasaki, Japan
| | - Masatsugu Ema
- Department of Stem Cells and Human Disease Models, Research Center for Animal Life Science, Shiga University of Medical Science, Shiga, Japan.,Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University Institute for Advanced Study, Kyoto, Japan
| | | | - Kenji Kawai
- Central Institute for Experimental Animals, Kawasaki, Japan
| | - Erika Sasaki
- Central Institute for Experimental Animals, Kawasaki, Japan
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25
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Yamazaki S, Odanaka M, Shime H, Imai M, Hemmi H, Kaisho T, Ohkura N, Sakaguchi S, Morita A. 051 Dermal dendritic cells present neo-self antigens induced by ultraviolet B exposure to expand Foxp3+ regulatory T cells. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.127] [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]
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26
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Suzuki Y, Sakuma H, Yamazaki S. Comparison of patency rates of lymphaticovenous anastomoses at different sites for lower extremity lymphedema. J Vasc Surg Venous Lymphat Disord 2019; 7:222-227. [DOI: 10.1016/j.jvsv.2018.10.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 10/22/2018] [Indexed: 10/27/2022]
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27
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Goda T, Kinoshita I, Oizumi S, Nakano K, Harada T, Kawai Y, Sakakibara-Konishi J, Yokouchi H, Morikawa N, Yamada N, Yamazaki S, Sugawara S, Asahina H, Amano T, Hatanaka Y, Matsuno Y, Nishihara H, Isobe H, Nishimura M, Dosaka-Akita H. A prospective observational study of HER2 alterations in NSCLCs: HOT1303-A. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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28
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Arakaki Y, Shimoji Y, Yamazaki S, Shimizu Y, Aoki Y. Microsurgical lymphaticovenular anastomosis for refractory chylous ascites following para-aortic lymph nodes dissection in a patient with tubal cancer. Gynecol Oncol Rep 2018; 26:53-55. [PMID: 30302363 PMCID: PMC6174838 DOI: 10.1016/j.gore.2018.09.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 12/18/2022] Open
Abstract
•Postoperative chylous ascites is an important clinical issue in surgery for gynecological malignancy.•Our patient with refractory chylous ascites after surgery for tubal cancer.•She received great benefit from the microsurgical lymphaticovenular anastomosis.•The microsurgical lymphaticovenular anastomosis is the treatment of choice.•The entire procedure was performed under local anesthesia.
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Affiliation(s)
- Yoshihisa Arakaki
- Department of Obstetrics and Gynecology, Graduate School of Medicine, University of the Ryukyus, 207 Uehara Nishihara, Okinawa 903-0215, Japan
| | - Yuko Shimoji
- Department of Obstetrics and Gynecology, Graduate School of Medicine, University of the Ryukyus, 207 Uehara Nishihara, Okinawa 903-0215, Japan
| | - Shun Yamazaki
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, University of the Ryukyus, 207 Uehara Nishihara, Okinawa 903-0215, Japan
| | - Yusuke Shimizu
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, University of the Ryukyus, 207 Uehara Nishihara, Okinawa 903-0215, Japan
| | - Yoichi Aoki
- Department of Obstetrics and Gynecology, Graduate School of Medicine, University of the Ryukyus, 207 Uehara Nishihara, Okinawa 903-0215, Japan
- Corresponding author.
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29
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Shimbo T, Sasaki E, Kitayama T, Yamazaki S, Nishida M, Ouchi Y, Yamamoto R, Bruckner-Tuderman L, Uitto J, Kikuchi Y, Katayama I, Kaneda Y, Tamai K. 843 Systemic delivery of HMGB1 promotes tissue regeneration by activating PDGFRα cells in a mouse model of epidermolysis bullosa. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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30
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Fujiwara C, Sekiguchi A, Yamazaki S, Ishikawa O, Motegi S. 845 Inhibitory regulation of MFG-E8 on fibrosis in systemic sclerosis via modulating TGF-β signaling. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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31
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Yamazaki S, Satomura Y. Standard Method for Describing an Electronic Patient Record Template: Application of XML to Share Domain Knowledge. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634254] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract:A Template Definition Language (TDL) was developed to share knowledge of how to construct an electronic patient record (EPR) template. Based on the extensible markup language XML, TDL has been designed to be independent of EPR platforms or databases. Our research of TDL was conducted through evaluation of the description of various templates in the currently available EPRs and through comparisons with some electronic clinical guidelines. We conclude that TDL is sufficient for the objective but still needs improvement of the algorithm for describing dynamic changes.
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32
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Kamata M, Yamazaki S, Tanise Y, Yamada Y, Nakamura T. Morphological change in peristaltic crawling motion of a narrow pipe inspection robot inspired by earthworm’s locomotion. Adv Robot 2018. [DOI: 10.1080/01691864.2017.1417158] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M. Kamata
- Precision Mechanics, Chuo University, Tokyo, Japan
| | - S. Yamazaki
- Precision Mechanics, Chuo University, Tokyo, Japan
| | - Y. Tanise
- Precision Mechanics, Chuo University, Tokyo, Japan
| | - Y. Yamada
- Precision Mechanics, Chuo University, Tokyo, Japan
| | - T. Nakamura
- Precision Mechanics, Chuo University, Tokyo, Japan
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33
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Suzuki Y, Sakuma H, Yamazaki S, Ihara J. Lymphatic tract reconstruction using a pedicled deep inferior epigastric perforator flap. Lymphology 2018; 51:79-84. [PMID: 30253459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We encountered a case in which we used a pedicled deep inferior epigastric perforator(DIEP) flap to repair a lymphatic leak. This case shows that such repairs can lead to the reconstruction of the lymphatic tract and prevent lymphatic leak recurrences. The present report describes a 45-year-old woman with ovarian cancer who underwent hysterectomy, bilateral salpingo-oophorectomy, pelvic lymphadenectomy, para-aortic lymphadenectomy, and omentectomy. She presented with a pelvic lymphocele with lower-extremity swelling. Lymphovenous anastomosis was performed and swelling of the lower extremity abated. However, because of the occurrence of deep vein thrombosis and the recurrence of swelling, we used a 6-cm-long and 14-cm-wideDIEP flap after lymphocele fenestration. The flap was de-epithelialized and fixed into the peritoneum, with the cutis side facing the leakage point. The postoperative course was uneventful, and no recurrence was observed. We obtained good results by providing abundant blood flow to abundant lymph tissue at the fenestration point. It is known that lymphatic vessels can spontaneously connect with each other. We hypothesize that the DIEP flap improved the edema in this case by regenerating the lymphatic network and improving flow into the bridging flap.
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Affiliation(s)
- Y Suzuki
- Department of Plastic and Reconstructive Surgery, Yokohama Municipal Citizen's Hospital, Yokohama, Japan
| | - H Sakuma
- Department of Plastic and Reconstructive Surgery, Yokohama Municipal Citizen's Hospital, Yokohama, Japan
| | - S Yamazaki
- Department of Plastic and Reconstructive Surgery, University of the Ryukyus, Okinawa, Japan
| | - J Ihara
- Department of Plastic and Reconstructive Surgery, Yokohama Municipal Citizen's Hospital, Yokohama, Japan
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34
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Torii K, Kubo R, Furuhashi T, Muramatsu S, Sagawa Y, Saito C, Yamazaki S, Morita A. 638 Photochemotherapy limits Treg plasticity and restores Treg function in psoriasis patients. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.314] [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: 12/01/2022]
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35
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Mori S, Miura H, Yamazaki S, Suzuki T, Shimizu A, Seki Y, Kunugi T, Nishio S, Fujisawa N, Hishinuma A, Kikuchi M. Preliminary Design of a Solid Particulate Cooled Blanket for the Steady State Tokamak Reactor (SSTR). ACTA ACUST UNITED AC 2017. [DOI: 10.13182/fst92-a29973] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Mori
- Kawasaki Heavy Industries, Ltd., 2-4-25 Minami-suna, Koto-ku,Tokyo, 136, Japan (3)3615-5147
| | - H. Miura
- Kawasaki Heavy Industries, Ltd., 2-4-25 Minami-suna, Koto-ku,Tokyo, 136, Japan (3)3615-5147
| | - S. Yamazaki
- Kawasaki Heavy Industries, Ltd., 2-4-25 Minami-suna, Koto-ku,Tokyo, 136, Japan (3)3615-5147
| | - T. Suzuki
- Kawasaki Heavy Industries, Ltd., 2-4-25 Minami-suna, Koto-ku,Tokyo, 136, Japan (3)3615-5147
| | - A. Shimizu
- Kyushu University, 6-1 Kasuga-koen, Kasuga city, Fukuoka-ken, 816, Japan (92)573-9611
| | - Y. Seki
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - T. Kunugi
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - S. Nishio
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - N. Fujisawa
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - A. Hishinuma
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
| | - M. Kikuchi
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan (292)70-7520
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36
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Shimizu S, Yamazaki S, Akiyama T, Kawada T, Pearson J, Shishido T, Sugimachi M. P5159Cardiac microdialysis enables us to monitor myocardial interstitial microRNA levels in an in-vivo beating rat heart during ischaemia/reperfusion. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5159] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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37
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Yamazaki S, Yasumura S. DOES COHABITATING FAMILIES’ INVOLVEMENT AFFECT DEPRESSION AMONG COMMUNITY-DWELLING OLDER ADULTS? Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - S. Yasumura
- Fukushima Medical University, Fukushima, Japan
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38
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Ura C, Okamura T, Yamazaki S, Ishiguro T, Miyazaki M, Ibe M, Kubota A, Kawamuro Y. RICE-FARMING CARE FOR PEOPLE WITH DEMENTIA; A NOVEL WAY OF SOCIAL PARTICIPATION FOR THE ELDERLY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- C. Ura
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
| | - T. Okamura
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
- University of Tokyo, Tokyo, Japan,
| | | | | | | | - M. Ibe
- Kawamuro Memorial Hospital, Niigata, Japan
| | - A. Kubota
- Kawamuro Memorial Hospital, Niigata, Japan
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39
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Shimbo T, Yamazaki S, Wang X, Kikuchi Y, Bruckner-Tuderman L, Kaneda Y, Tamai K. 906 Systemic HMGB1 administration ameliorates cutaneous and non-cutaneous manifestations in a dystrophic epidermolysis bullosa model mouse. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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40
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Sakaguchi T, Yamazaki S, Hashimoto T. Enhancement of CO2 permeability of poly(vinyl ether)s having oxyethylene chains by the sequence control of crosslinking sites. RSC Adv 2017. [DOI: 10.1039/c7ra01353a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Triblock copolymers exhibited high gas permeability than the random copolymers. The triblock copolymers have the crosslinking only at the end segments, which makes the polymer chains more flexible than the random copolymers.
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Affiliation(s)
- T. Sakaguchi
- Department of Materials Science and Engineering
- Graduate School of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - S. Yamazaki
- Department of Materials Science and Engineering
- Graduate School of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - T. Hashimoto
- Department of Materials Science and Engineering
- Graduate School of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
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41
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Ichida A, Hasegawa K, Takayama T, Kudo H, Sakamoto Y, Yamazaki S, Midorikawa Y, Higaki T, Matsuyama Y, Kokudo N. Randomized clinical trial comparing two vessel-sealing devices with crush clamping during liver transection. Br J Surg 2016; 103:1795-1803. [DOI: 10.1002/bjs.10297] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 06/24/2016] [Accepted: 07/13/2016] [Indexed: 12/22/2022]
Abstract
Abstract
Background
Previous RCTs have failed to demonstrate the usefulness of combining energy devices with the conventional clamp crushing method to reduce blood loss during liver transection. Here, the combination of an ultrasonically activated device (UAD) and a bipolar vessel-sealing device (BVSD) with crush clamping was investigated.
Methods
Patients scheduled to undergo hepatectomy at the University of Tokyo Hospital or Nihon University Itabashi Hospital were eligible for this parallel-group, single-blinded randomized study. Patients were assigned to a control group (no energy device used), an UAD group or a BVSD group. The primary endpoint was the volume of blood loss during liver transection. Outcomes of the control group and the combined energy device groups (UAD plus BVSD) were first compared. Pairwise comparisons among the three groups were made for outcomes for which the combined energy device group was superior to the control group.
Results
A total of 380 patients were enrolled between July 2012 and May 2014; 116 patients in the control group, 122 in the UAD group and 123 in the BVSD group were included in the final analysis. Median blood loss during liver transection was lower in the combined energy device group (245 patients) than in the control group (116 patients): median 190 (range 0–3575) versus 230 (range 3–1570) ml (P = 0·048). Pairwise comparison revealed that blood loss was lower in the BVSD group than in the control group (P = 0·043).
Conclusion
The use of energy devices combined with crush clamping reduced blood loss during liver transection. Registration number: C000008372 (www.umin.ac.jp/ctr/index.htm).
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Affiliation(s)
- A Ichida
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, Tokyo, Japan
| | - K Hasegawa
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, Tokyo, Japan
| | - T Takayama
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - H Kudo
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, Tokyo, Japan
| | - Y Sakamoto
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, Tokyo, Japan
| | - S Yamazaki
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Y Midorikawa
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - T Higaki
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Y Matsuyama
- Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan
| | - N Kokudo
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, Tokyo, Japan
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42
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Sakamoto S, Okeyo KO, Yamazaki S, Kurosawa O, Oana H, Kotera H, Washizu M. Adhesion patterning by a novel air-lock technique enables localization and in-situ real-time imaging of reprogramming events in one-to-one electrofused hybrids. Biomicrofluidics 2016; 10:054122. [PMID: 27822330 PMCID: PMC5085977 DOI: 10.1063/1.4965422] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 09/01/2016] [Indexed: 05/07/2023]
Abstract
Although fusion of somatic cells with embryonic stem (ES) cells has been shown to induce reprogramming, single-cell level details of the transitory phenotypic changes that occur during fusion-based reprogramming are still lacking. Our group previously reported on the technique of one-to-one electrofusion via micro-slits in a microfluidic platform. In this study, we focused on developing a novel air-lock patterning technique for creating localized adhesion zones around the micro-slits for cell localization and real-time imaging of post fusion events with a single-cell resolution. Mouse embryonic fibroblasts (MEF) were fused individually with mouse ES cells using a polydimethylsiloxane (PDMS) fusion chip consisting of two feeder channels with a separating wall containing an array of micro-slits (slit width ∼3 μm) at a regular spacing. ES cells and MEFs were introduced separately into the channels, juxtaposed on the micro-slits by dielectrophoresis and fused one-to-one by a pulse voltage. To localize fused cells for on-chip culture and time-lapse microscopy, we implemented a two-step approach of air-lock bovine serum albumin patterning and Matrigel coating to create localized adhesion areas around the micro-slits. As a result of time-lapse imaging, we could determine that cell division occurs within 24 h after fusion, much earlier than the 2-3 days reported by earlier studies. Remarkably, Oct4-GFP (Green Fluorescent Protein) was confirmed after 25 h of fusion and thereafter stably expressed by daughter cells of fused cells. Thus, integrated into our high-yield electrofusion platform, the technique of air-lock assisted adhesion patterning enables a single-cell level tracking of fused cells to highlight cell-level dynamics during fusion-based reprogramming.
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Affiliation(s)
- S Sakamoto
- Department of Bioengineering, School of Engineering, The University of Tokyo , Tokyo 113-3656, Japan
| | - K O Okeyo
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo , Tokyo 113-3656, Japan
| | - S Yamazaki
- Center for Stem Cell Therapy, The Institute of Medical Science, The University of Tokyo , Tokyo 113-3656, Japan
| | - O Kurosawa
- Department of Bioengineering, School of Engineering, The University of Tokyo , Tokyo 113-3656, Japan
| | - H Oana
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo , Tokyo 113-3656, Japan
| | - H Kotera
- Department of Microengineering, School of Engineering, Kyoto University , Kyoto 606-8501, Japan
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Saitoh M, Kobayashi K, Ohmori I, Tanaka Y, Tanaka K, Inoue T, Horino A, Ohmura K, Kumakura A, Takei Y, Hirabayashi S, Kajimoto M, Uchida T, Yamazaki S, Shiihara T, Kumagai T, Kasai M, Terashima H, Kubota M, Mizuguchi M. Cytokine-related and sodium channel polymorphism as candidate predisposing factors for childhood encephalopathy FIRES/AERRPS. J Neurol Sci 2016; 368:272-6. [PMID: 27538648 DOI: 10.1016/j.jns.2016.07.040] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/13/2016] [Accepted: 07/14/2016] [Indexed: 11/15/2022]
Abstract
Febrile infection-related epilepsy syndrome (FIRES), or acute encephalitis with refractory, repetitive partial seizures (AERRPS), is an epileptic encephalopathy beginning with fever-mediated seizures. The etiology remains unclear. To elucidate the genetic background of FIRES/AERRPS (hereafter FIRES), we recruited 19 Japanese patients, genotyped polymorphisms of the IL1B, IL6, IL10, TNFA, IL1RN, SCN1A and SCN2A genes, and compared their frequency between the patients and controls. For IL1RN, the frequency of a variable number of tandem repeat (VNTR) allele, RN2, was significantly higher in the patients than in controls (p=0.0067), and A allele at rs4251981 in 5' upstream of IL1RN with borderline significance (p=0.015). Haplotype containing RN2 was associated with an increased risk of FIRES (OR 3.88, 95%CI 1.40-10.8, p=0.0057). For SCN1A, no polymorphisms showed a significant association, whereas a missense mutation, R1575C, was found in two patients. For SCN2A, the minor allele frequency of G allele at rs1864885 was higher in patients with borderline significance (p=0.011). We demonstrated the association of IL1RN haplotype containing RN2 with FIRES, and showed a possible association of IL1RN rs4251981 G>A and SCN2A rs1864885 A>G, in Japanese patients. These preliminary findings suggest the involvement of multiple genetic factors in FIRES, which needs to be confirmed by future studies in a larger number of FIRES cases.
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Affiliation(s)
- M Saitoh
- Department of Developmental Medical Sciences, Graduate School of Medicine, The University of Tokyo, Japan.
| | - K Kobayashi
- Department of Child Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
| | - I Ohmori
- Department of Special Needs Education, Graduate School of Education, Okayama University, Japan
| | - Y Tanaka
- Department of Pediatrics, Ohta Nishinouchi General Hospital, Japan
| | - K Tanaka
- Department of Pediatrics, Ohta Nishinouchi General Hospital, Japan
| | - T Inoue
- Department of Pediatrics, Child Medical Center, Osaka City General Hospital, Japan
| | - A Horino
- Department of Pediatrics, Child Medical Center, Osaka City General Hospital, Japan
| | - K Ohmura
- Department of Pediatrics, Kishiwada City Hospital, Japan
| | - A Kumakura
- Department of Pediatrics, Kitano Hospital, Japan
| | - Y Takei
- Division of Neurology, Nagano Childrens' Hospital, Japan
| | - S Hirabayashi
- Division of Neurology, Nagano Childrens' Hospital, Japan
| | - M Kajimoto
- Department of Pediatrics, Yamaguchi University, Japan
| | - T Uchida
- Department of Pediatrics, Sendai City, Hospital, Japan
| | - S Yamazaki
- Department of Pediatrics, Niigata City Hospital, Japan
| | - T Shiihara
- Department of Neurology, Gunma Children's Medical Center, Japan
| | - T Kumagai
- Division of Neurology, National Center for Child Health and Development, Japan
| | - M Kasai
- Division of Neurology, National Center for Child Health and Development, Japan
| | - H Terashima
- Division of Neurology, National Center for Child Health and Development, Japan
| | - M Kubota
- Division of Neurology, National Center for Child Health and Development, Japan
| | - M Mizuguchi
- Department of Developmental Medical Sciences, Graduate School of Medicine, The University of Tokyo, Japan
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Tsukada J, Yamada M, Yamada Y, Yamazaki S, Imanishi N, Tamura K, Hashimoto M, Nakatsuka S, Jinzaki M. Comparison of the diagnostic accuracy of FBP, ASiR, and MBIR reconstruction during CT angiography in the evaluation of a vessel phantom with calcified stenosis in a distal superficial femoral artery in a cadaver extremity. Medicine (Baltimore) 2016; 95:e4127. [PMID: 27399123 PMCID: PMC5058852 DOI: 10.1097/md.0000000000004127] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
PURPOSE To investigate whether adaptive statistical iterative reconstruction (ASiR) or model-based iterative reconstruction (MBIR) improves the diagnostic performance of computed tomography angiography (CTA) for small-vessel calcified lesions relative to filtered back projection (FBP) using cadaver extremities and a calcified stenosis phantom. METHODS A cadaver was used in accordance with our institutional regulations, and a calcified stenosis phantom simulating 4 grades of stenosis was prepared. The phantom was inserted within the distal superficial femoral artery of the cadaver leg. Ten CT images per reconstruction type and stenosis grade were acquired using a 64-slice multidetector-row CTA.As an objective measurement, the first and second derivatives of the CT value function profiles were calculated. As a subjective measurement, 2 blinded reviewers measured the stenosis ratio using a quantitative scale. The Wilcoxon rank-sum test was used to evaluate the data. RESULTS Objective measurements of both 25% and 50% stenosis differed significantly (P < 0.01) between MBIR (25/50%: 25.80/50.30 ± 3.88/3.86%) and FBP (25/50%: 35.60/83.80 ± 3.44/26.10%), whereas significant differences were not observed between ASiR and FBP.Reviewer 2's subjective measurements of 25% stenosis differed significantly (P < 0.01) between MBIR (35.13 ± 3.25%) and ASiR (40.89 ± 3.14%), and the measurements of 50% stenosis differed significantly (P < 0.01) between MBIR (reviewers 1/2, 62.36/54.78 ± 2.78/4.96%) and FBP (reviewers 1/2, 62.36/74.84 ± 2.78/18.10%). Significant differences in the subjective measurements were not observed between ASiR and FBP. CONCLUSION MBIR improves the diagnostic performance of CTA for small-vessel calcified lesions relative to FBP.
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Affiliation(s)
- Jitsuro Tsukada
- Department of Diagnostic Radiology, Keio University School of Medicine
| | - Minoru Yamada
- Multi-Dimension Biomedical Imaging and Information Laboratory in Research Park, Keio University School of Medicine
| | - Yoshitake Yamada
- Department of Diagnostic Radiology, Keio University School of Medicine
| | - Shun Yamazaki
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine
| | - Nobuaki Imanishi
- Department of Anatomy, Keio University School of Medicine, Tokyo, Japan
| | - Kentaro Tamura
- Department of Diagnostic Radiology, Keio University School of Medicine
| | | | - Seishi Nakatsuka
- Department of Diagnostic Radiology, Keio University School of Medicine
| | - Masahiro Jinzaki
- Department of Diagnostic Radiology, Keio University School of Medicine
- Correspondence: Masahiro Jinzaki, Department of Diagnostic Radiology, Keio University School of Medicine, Tokyo, Japan (e-mail: )
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Suzuki N, Sasaki Y, Kato K, Yamazaki S, Kurasawa M, Yorozu K, Shimonaka Y, Yamamoto M. Efficacy estimation of erythropoiesis-stimulating agents using erythropoietin-deficient anemic mice. Haematologica 2016; 101:e356-60. [PMID: 27247319 DOI: 10.3324/haematol.2015.140814] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- Norio Suzuki
- Division of Oxygen Biology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yusuke Sasaki
- Product Research Department, Chugai Pharmaceutical Co. Ltd., Kamakura, Japan
| | - Koichiro Kato
- Division of Oxygen Biology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shun Yamazaki
- Division of Oxygen Biology, Tohoku University Graduate School of Medicine, Sendai, Japan Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Mitsue Kurasawa
- Product Research Department, Chugai Pharmaceutical Co. Ltd., Kamakura, Japan
| | - Keigo Yorozu
- Product Research Department, Chugai Pharmaceutical Co. Ltd., Kamakura, Japan
| | - Yasushi Shimonaka
- Product Research Department, Chugai Pharmaceutical Co. Ltd., Kamakura, Japan
| | - Masayuki Yamamoto
- Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
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Nakatani T, Sase K, Oshiyama H, Akiyama M, Horie M, Nawata K, Nishinaka T, Tanoue Y, Toda K, Tozawa M, Yanase M, Yamazaki S, Ishida M, Hiramatsu A, Kitamura S. Report of Japanese Registry for Mechanically Assisted Circulatory Support (J-MACS) - Non-Pulsatile Implantable LVAS vs. Extracorporeal LVAD as Bridge to Transplantation. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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47
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Ohnishi T, Uchida T, Yamazaki S, Kimura K. Preparation of poly(ester-imide) ribbons comprised of helical and non-helical blocks by copolymerization. RSC Adv 2016. [DOI: 10.1039/c6ra22494f] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ribbon-like crystals of poly[4-(5-oxy-1,3-dioxoisoindoline-2-yl)benzoyl] comprised of helical and non-helical blocks were prepared by stepwise addition ofp-acetoxybenzoic acid during the homo-polymerization ofN-(4-carboxyphenyl)-4-acetoxyphthalimide in aromatic solvent.
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Affiliation(s)
- T. Ohnishi
- Graduate School of Environmental and Life Science
- Okayama University
- Okayama
- Japan
| | - T. Uchida
- Graduate School of Natural Science and Technology
- Okayama University
- Okayama
- Japan
| | - S. Yamazaki
- Graduate School of Environmental and Life Science
- Okayama University
- Okayama
- Japan
| | - K. Kimura
- Graduate School of Environmental and Life Science
- Okayama University
- Okayama
- Japan
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Numata S, Tsutsumi Y, Monta O, Yamazaki S, Seo H, Yoshida S, Samura T, Ohashi H. Acute type A aortic dissection repair with mild-to-moderate hypothermic circulatory arrest and selective cerebral perfusion. J Cardiovasc Surg (Torino) 2015; 56:525-530. [PMID: 25723762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM The purpose of this study was to evaluate surgical results of aortic repair with antegrade selective cerebral perfusion (ASCP) and mild-to-moderate hypothermia (MH) from 28 to 31°C comparing with previous series with hypothermia from 20°C to 27 °C. METHODS Between 2000 and 2011, 109 consecutive patients underwent surgical repair for acute type A aortic dissection with circulatory arrest and ASCP and MH in our institution. Mean patient age was 67±11 years old. Total arch replacement was performed in 85 patients (78%). Thirty (27%) patients had shock status preoperatively. The patients were divided into two different subsets, which is group A (circulatory arrest at less than 27.9 °C, N.=70), and group B (at more than 28 °C, N.=39). RESULTS The mean extra-corporeal circulation time was 185±47 minutes in group A and 155±38 minutes in group B (P<0.001). The hospital mortality was 11.4% in group A and 10.3% in group B (P>0.05). Permanent neurological deficit occurred in 10 patients (14.3%) in group A, and in 5 (12.8%) in group B (P>0.05). Two (2.8%) paraplegia occurred in group A, and none in group B (P>0.05). The incidence of renal failure requiring hemodialysis was 17.1% in group A and 7.7% in group B, (P>0.05). Respiratory failure after surgery occurred in 27.1% of patients in group A, and 5.1% in group B (P=0.005). CONCLUSION Circulatory arrest at more than 28 °C offered sufficient cerebral and distal organ protection for acute type A aortic dissection.
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Affiliation(s)
- S Numata
- Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Fukui, Japan -
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49
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Souma T, Nezu M, Nakano D, Yamazaki S, Hirano I, Sekine H, Dan T, Takeda K, Fong GH, Nishiyama A, Ito S, Miyata T, Yamamoto M, Suzuki N. Erythropoietin Synthesis in Renal Myofibroblasts Is Restored by Activation of Hypoxia Signaling. J Am Soc Nephrol 2015; 27:428-38. [PMID: 26054543 DOI: 10.1681/asn.2014121184] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [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: 12/05/2014] [Accepted: 04/13/2015] [Indexed: 01/02/2023] Open
Abstract
Erythropoietin (Epo) is produced by renal Epo-producing cells (REPs) in a hypoxia-inducible manner. The conversion of REPs into myofibroblasts and coincident loss of Epo-producing ability are the major cause of renal fibrosis and anemia. However, the hypoxic response of these transformed myofibroblasts remains unclear. Here, we used complementary in vivo transgenic and live imaging approaches to better understand the importance of hypoxia signaling in Epo production. Live imaging of REPs in transgenic mice expressing green fluorescent protein from a modified Epo-gene locus revealed that healthy REPs tightly associated with endothelium by wrapping processes around capillaries. However, this association was hampered in states of renal injury-induced inflammation previously shown to correlate with the transition to myofibroblast-transformed renal Epo-producing cells (MF-REPs). Furthermore, activation of hypoxia-inducible factors (HIFs) by genetic inactivation of HIF-prolyl hydroxylases (PHD1, PHD2, and PHD3) selectively in Epo-producing cells reactivated Epo production in MF-REPs. Loss of PHD2 in REPs restored Epo-gene expression in injured kidneys but caused polycythemia. Notably, combined deletions of PHD1 and PHD3 prevented loss of Epo expression without provoking polycythemia. Mice with PHD-deficient REPs also showed resistance to LPS-induced Epo repression in kidneys, suggesting that augmented HIF signaling counterbalances inflammatory stimuli in regulation of Epo production. Thus, augmentation of HIF signaling may be an attractive therapeutic strategy for treating renal anemia by reactivating Epo synthesis in MF-REPs.
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Affiliation(s)
- Tomokazu Souma
- Department of Medical Biochemistry, Division of Interdisciplinary Medical Science, Division of Nephrology, Endocrinology, and Vascular Medicine, and
| | - Masahiro Nezu
- Department of Medical Biochemistry, Division of Interdisciplinary Medical Science, Division of Nephrology, Endocrinology, and Vascular Medicine, and
| | - Daisuke Nakano
- Department of Pharmacology, Kagawa University, Kagawa, Japan; and
| | - Shun Yamazaki
- Department of Medical Biochemistry, Division of Interdisciplinary Medical Science
| | - Ikuo Hirano
- Department of Medical Biochemistry, Division of Interdisciplinary Medical Science
| | - Hiroki Sekine
- Department of Medical Biochemistry, Division of Interdisciplinary Medical Science
| | - Takashi Dan
- Division of Molecular Medicine and Therapy, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kotaro Takeda
- Department of Cell Biology, University of Connecticut Health Centre, Farmington, Connecticut
| | - Guo-Hua Fong
- Department of Cell Biology, University of Connecticut Health Centre, Farmington, Connecticut
| | - Akira Nishiyama
- Department of Pharmacology, Kagawa University, Kagawa, Japan; and
| | - Sadayoshi Ito
- Division of Nephrology, Endocrinology, and Vascular Medicine, and
| | - Toshio Miyata
- Division of Molecular Medicine and Therapy, Tohoku University Graduate School of Medicine, Sendai, Japan
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Shimoaka T, Wakai C, Sakabe T, Yamazaki S, Hasegawa T. Hydration structure of strongly bound water on the sulfonic acid group in a Nafion membrane studied by infrared spectroscopy and quantum chemical calculation. Phys Chem Chem Phys 2015; 17:8843-9. [DOI: 10.1039/c5cp00567a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The hydration structure of the ‘strongly bound water’ around the sulfonic acid (SA) groups in Nafion is studied using infrared spectroscopy with the aid of quantum chemical (QC) calculations.
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Affiliation(s)
- T. Shimoaka
- Laboratory of Solution and Interface Chemistry
- Division of Environmental Chemistry
- Institute for Chemical Research
- Kyoto University
- Uji
| | - C. Wakai
- Laboratory of Solution and Interface Chemistry
- Division of Environmental Chemistry
- Institute for Chemical Research
- Kyoto University
- Uji
| | - T. Sakabe
- Analysis and Simulation Center
- Asahi Kasei Corporation
- Fuji-shi
- Japan
| | - S. Yamazaki
- Analysis and Simulation Center
- Asahi Kasei Corporation
- Fuji-shi
- Japan
| | - T. Hasegawa
- Laboratory of Solution and Interface Chemistry
- Division of Environmental Chemistry
- Institute for Chemical Research
- Kyoto University
- Uji
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