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Aoki H, Ito T, Hirata M, Kadohisa M, Yamamoto M, Uebayashi EY, Shirai H, Okumura S, Masano Y, Ogawa E, Okamoto T, Okajima H, Hatano E. Effects of Adding Congested Segment IV to the Left Lateral Graft on Short-term Outcomes in Pediatric Living-donor Liver-transplant Recipients. Transplant Direct 2023; 9:e1551. [PMID: 37876916 PMCID: PMC10593261 DOI: 10.1097/txd.0000000000001551] [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: 08/29/2023] [Accepted: 09/11/2023] [Indexed: 10/26/2023] Open
Abstract
Background In some pediatric patients undergoing living-donor liver transplantation, segment IV without the middle hepatic vein can be added to a left lateral segment graft to obtain larger graft volume. Because no clear consensus on this technique exists, this study investigated the effects of congested areas on postoperative outcomes in pediatric patients with biliary atresia undergoing living-donor liver transplantation. Methods We retrospectively reviewed data of recipients with biliary atresia aged ≤15 y who had undergone living-donor liver transplantation at Kyoto University Hospital between 2006 and 2021 and with graft-to-recipient weight ratios (GRWR) of ≤2%. Based on the percentage of congested area in the graft, patients were classified into the noncongestion (n = 40; ≤10%) and congestion (n = 13; >10%) groups. To compare the differences between groups with similar nooncongestive GRWRs and investigate the effect of adding congested areas, patients in the noncongestion group with GRWRs of ≤1.5% were categorized into the small noncongestion group (n = 24). Results GRWRs and backgrounds were similar between the noncongestion and congestion groups; however, patients in the congestion group demonstrated significantly longer prothrombin times, higher ascites volumes, and longer hospitalization. Further, compared with the small noncongestion group, the congestion group had significantly greater GRWR and similar noncongestive GRWR; however, the congestion group had significantly longer prothrombin time recovery (P = 0.020, postoperative d 14), higher volume of ascites (P < 0.05, consistently), and longer hospitalization (P = 0.045), requiring significantly higher albumin and gamma-globulin transfusion volumes than the small noncongestion group (P = 0.027 and P = 0.0083, respectively). Reoperation for wound dehiscence was significantly more frequent in the congestion group (P = 0.048). Conclusions In pediatric liver-transplant recipients, adding a congested segment IV to the left lateral segment to obtain larger graft volume may negatively impact short-term postoperative outcomes.
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Affiliation(s)
- Hikaru Aoki
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takashi Ito
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masashi Kadohisa
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Miki Yamamoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | | | - Hisaya Shirai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinya Okumura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuki Masano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Eri Ogawa
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tatsuya Okamoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hideaki Okajima
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Department of Pediatric Surgery, Kanazawa Medical University, Ishikawa, Japan
| | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Yao S, Yagi S, Hirata M, Miyachi Y, Ogawa E, Uozumi R, Sugimoto T, Asahara T, Uemoto S, Hatano E. Chronological changes in the gut microbiota and intestinal environment in recipients and donors of living donor liver transplantation. J Hepatobiliary Pancreat Sci 2023; 30:439-452. [PMID: 36178211 DOI: 10.1002/jhbp.1241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/11/2022] [Accepted: 08/26/2022] [Indexed: 04/28/2023]
Abstract
BACKGROUND/PURPOSE This prospective study aimed to investigate the dynamic changes in the gut microbiota (GM) and associated intestinal environment, which were assessed by measuring fecal organic acid (OA) concentrations, during the early period after liver transplantation (LT). To understand the fundamental characteristics of the human GM, data obtained from living donors were also analyzed. METHODS Fixed-point observation was performed in 23 recipients and 21 donors for up to 2 weeks after LT. The GM and OA concentrations were investigated using ribosomal RNA-targeted reverse-transcription quantitative polymerase chain reaction and high-performance liquid chromatography, respectively. RESULTS Before LT, the recipients exhibited remarkable dysbiosis and OA depletion, which were proportional to the model for end-stage liver disease score. Correlations between the abundances of some specific strains and OA concentrations were observed. After LT, while donor lobectomy caused only slight, transient and reversible changes in the GM and OA concentrations, recipients exhibited delayed recovery in these factors. However, no clear evidence of causality was observed between the GM or OA concentrations and LT outcomes. CONCLUSIONS The GM and intestinal environment in LT recipients exhibited characteristics that were clearly different from those in donors. LT did not normalize but rather disrupted the GM during the early post-LT period, but its negative clinical impact could be minimized with perioperative management.
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Affiliation(s)
- Siyuan Yao
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shintaro Yagi
- Department of Hepato-Biliary-Pancreatic Surgery and Transplantation, Kanazawa University, Ishikawa, Japan
| | - Masaaki Hirata
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Eri Ogawa
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryuji Uozumi
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takuya Sugimoto
- Yakult Central Institute, Yakult Honsha Co. Ltd., Tokyo, Japan
| | - Takashi Asahara
- Yakult Central Institute, Yakult Honsha Co. Ltd., Tokyo, Japan
| | | | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Nguyen TV, Kim Do LT, Namula Z, Lin QY, Torigoe N, Nagahara M, Hirata M, Tanihara F, Otoi TBIRCTUTJ. Vitrified before and after genome editing via electroporation. Cryo Letters 2023; 44:118-122. [PMID: 37883162] [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: 10/27/2023]
Abstract
BACKGROUND Cryopreservation of bovine zygotes allows for a flexible schedule of genome editing via electroporation. However, vitrification-induced cell membrane damage may not only affect embryonic development but also genome mutation. OBJECTIVE To investigate the effects of vitrification of zygotes before and after electroporation treatments on the development and genome mutation of bovine presumptive zygotes. MATERIALS AND METHODS In vitro-derived bovine zygotes were electroporated with the CRISPR/Cas9 system immediately (Vitrified-EP) or 2 h after incubation (Vitrified-2h-EP) following vitrification and warming, or electroporated before vitrification (EP-vitrified). RESULTS The development rates of vitrified-warmed zygotes were significantly lower (p < 0.05) than those of control zygotes that were not vitrified. Moreover, no differences were observed in the mutation rates and mutation efficiency of the blastocysts resulting from electroporated zygotes, irrespective of the timing of electroporation treatment. CONCLUSION Our results suggest that vitrification before and after electroporation treatments does not affect the genome editing of zygotes.
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Affiliation(s)
- T V Nguyen
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, 100000 Hanoi, Vietnam; Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan
| | - L T Kim Do
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, 100000 Hanoi, Vietnam; Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan.
| | - Z Namula
- College of Coastal Agricultural Sciences, Guangdong Ocean University, 524088 Zhanjiang, China; Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan
| | - Q Y Lin
- Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, 7793233 Tokushima, Japan
| | - N Torigoe
- Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, 7793233 Tokushima, Japan
| | - M Nagahara
- Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, 7793233 Tokushima, Japan
| | - M Hirata
- Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, 7793233 Tokushima, Japan
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Hirata M, Yagi S, Ito T, Masano Y, Miyachi Y, Yao S, Sonoda M, Masuda S, Haga H, Hatano E. Impact of very early introduction of everolimus on liver regeneration after partial liver transplantation in rats. J Hepatobiliary Pancreat Sci 2023. [PMID: 36707057 DOI: 10.1002/jhbp.1310] [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] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 01/10/2023] [Accepted: 01/19/2023] [Indexed: 01/29/2023]
Abstract
BACKGROUND/PURPOSE This experimental study in rats aimed to investigate the impact of very early introduction (within 3 h) of everolimus (EVR) + reduced-tacrolimus (TAC) after partial liver transplantation (LT) on liver regeneration, rejection, and survival. METHODS Based on appropriate dose of EVR + reduced-TAC in 70% hepatectomy (Experiment 1), allogeneic 30% partial LT (Experiment 2) and whole LT (Experiment 3) were performed. RESULTS After partial LT in EVR + reduced-TAC therapy, restoration of liver graft weight (to that of the whole liver) was delayed compared with standard dose TAC monotherapy (standard-TAC) on day 3 (59.3% vs. 72.9%; p < .001) and 14 (88.1% vs. 95.5%; p = .01). Survival was 75%, which was not as high as the value of 100% observed for standard-TAC, because neither infection nor rejection could be prevented. By contrast, survival after whole LT was 100% as neither infection nor rejection occurred. CONCLUSIONS The very early introduction of EVR + reduced-TAC after partial LT delayed liver regeneration, and made it difficult to manage the dose required to suppress both infection and rejection. On the other hand, EVR + reduced-TAC could be introduced safely very early after whole LT.
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Affiliation(s)
- Masaaki Hirata
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shintaro Yagi
- Department of Hepato-Biliary-Pancreatic Surgery and Transplantation, Kanazawa University, Kanazawa, Japan
| | - Takashi Ito
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuki Masano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Siyuan Yao
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mari Sonoda
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satohiro Masuda
- Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Hironori Haga
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Kurimoto M, Yamanaka K, Hirata M, Umeda M, Yamashita T, Aoki H, Hanabata Y, Shinkura A, Tamura J. Emergency open drainage of massive hemoperitoneum and early stage left hepatectomy for abdominal compartment syndrome due to hepatocellular carcinoma rupture: a case report. Surg Case Rep 2022; 8:122. [PMID: 35731449 PMCID: PMC9218022 DOI: 10.1186/s40792-022-01478-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/16/2022] [Indexed: 11/11/2022] Open
Abstract
Background Spontaneous rupture is one of the most life-threatening complications of hepatocellular carcinoma (HCC). Transcatheter arterial embolization (TAE) effectively achieves hemostasis in patients with hemodynamic instability. However, there have been no reports of abdominal compartment syndrome (ACS) caused by massive intra-abdominal hematoma after TAE. We report emergency open drainage of a massive hematoma for abdominal decompression and early stage left hepatectomy at the same time. Case presentation A 75-year-old woman was transported to our emergency department with hypovolemic shock. Dynamic contrast-enhanced computed tomography revealed extravasation of contrast medium from a HCC lesion in the medial segment of the liver and a large amount of high-density ascites. TAE was immediately performed to achieve hemostasis. Three hours after the first TAE, we decided to perform a second TAE for recurrent bleeding. After the second TAE, the patient’s intra-abdominal pressure increased to 35 mmHg, her blood pressure gradually decreased, and she had anuria. Thus, she was diagnosed with ACS due to spontaneous HCC rupture. Twenty-seven hours after her arrival to the hospital, we decided to perform open drainage of the massive hematoma and left hepatectomy for ACS relief, prevention of re-bleeding, tumor resection, and intraperitoneal lavage. The operative duration was 225 min, and the blood loss volume was 4626 g. Postoperative complications included pleural effusion and grade B liver failure. She was discharged on postoperative day 33. The patient survived for more than 3 years without functional deterioration. Conclusions Even after hemostasis is achieved by TAE for hemorrhagic shock due to spontaneous rupture of HCC, massive hemoperitoneum may lead to ACS, particularly in cases of re-bleeding. Considering the subsequent possibility of ACS and the recurrence of bleeding, early stage hepatectomy and removal of intra-abdominal hematoma after hemodynamic stabilization could be a treatment option for HCC rupture.
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Masano Y, Ito T, Aoki H, Hirata M, Okumura S, Anazawa T, Nagai K, Hata K, Hatano E. Antibody production after SARS-CoV2 vaccination and COVID-19 incidence in liver transplant recipients. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-3568] [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: 11/16/2022] Open
Affiliation(s)
- Yuki Masano
- Department of Surgery, Kyoto University, Kyoto, Japan
| | - Takashi Ito
- Department of Surgery, Kyoto University, Kyoto, Japan
| | - Hikaru Aoki
- Department of Surgery, Kyoto University, Kyoto, Japan
| | | | | | | | | | - Koichiro Hata
- Department of Surgery, Kyoto University, Kyoto, Japan
| | - Etsuro Hatano
- Department of Surgery, Kyoto University, Kyoto, Japan
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Hirata M, Yagi S, Ito T, Masano Y, Okumura S, Yao S, Miyachi Y, Aoki H, Katano K, Hatano E. Stepwise approach for acquisition of microsurgical skills through rat orthotopic liver transplantation experiments. Eur Surg Res 2022:000528092. [DOI: 10.1159/000528092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022]
Abstract
Although rat liver transplantation (LT) is useful in training surgeons to perform microsurgery, mastering these surgical techniques remains difficult. Systematized training protocols are needed that enable learning of the proper skills in a short period of time.
The present study describes an efficient five-step rat LT training protocol for surgeons designed to be mastered within 3 months through continuous training. The first step was to review all procedures by watching full videos of rat LT and to watch actual LT operations performed by a skilled surgeon, enabling recognition of the anatomy of rat abdominal organs. The second step was to perform ten donor operations, including ex-vivo graft preparation, to learn the atraumatic and delicate techniques. The third step was to perform ten LTs, with the goal of achieving an anhepatic time < 20 min and surviving until the next day. The fourth step was to perform ten additional LTs, with the goal of achieving 7 day survival. The fifth step was to perform 5-10 more LTs, with the goal of achieving 7 day survival in five consecutive LT operations.
Systematizing the training was found to increases its efficiency. Furthermore, determining the specific number of operations in advance is useful to maintain motivation for training. Mastering efficient rat LT will not only enhance the success of preclinical research, but will enable young surgeons to better perform vascular anastomoses under a microscope in humans.
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Shimizu T, Haro K, Tagawa M, Hirata M, Iwano S, Kosaka H, Yamamoto Y. Bilateral ballism as limb-shaking transient ischemic attacks treated with unilateral carotid artery stent placement. J Stroke Cerebrovasc Dis 2022; 31:106781. [PMID: 36156444 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 09/07/2022] [Accepted: 09/10/2022] [Indexed: 10/31/2022] Open
Abstract
Bilateral limb-shaking transient ischemic attack (LS-TIA) is a rare disease involving carotid artery stenosis, characterized by ballism-like involuntary movements of the arms and legs. We describe the case report of a male patient in his 80s presented with continuous bilateral ballism in the arms and legs and tongue dyskinesia. Magnetic resonance imaging showed no ischemic lesions, while cerebral angiography revealed right internal carotid artery (ICA) occlusion and 80% stenosis of the left ICA. 99mTc-ethyl cysteinate dimer single-photon emission computed tomography demonstrated hypoperfusion in the right cerebral cortex but hyperperfusion in both basal ganglia. Left ICA stenting was performed, and involuntary limb shaking disappeared. This case report highlights the importance of accurate diagnosis and treatment of bilateral ballism as LS-TIA.
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Affiliation(s)
- Toshihiko Shimizu
- Department of Neurosurgery, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan.
| | - Keiko Haro
- Department of Neurology, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
| | - Masahiko Tagawa
- Department of Neurosurgery, Ehime University Graduate School of Medicine, Tōon City, Ehime, Japan
| | - Masaaki Hirata
- Department of Radiology, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
| | - Sachiko Iwano
- Department of Radiology, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
| | - Hiroshi Kosaka
- Department of Neurosurgery, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
| | - Yuji Yamamoto
- Department of Neurosurgery, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
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Yao S, Yagi S, Ogawa E, Hirata M, Miyachi Y, Iwamura S, Uozumi R, Sugimoto T, Asahara T, Uemoto S, Hatano E. Dysbiosis and Depletion of Fecal Organic Acids Correlate With the Severity of Rejection After Rat Liver Transplantation. Transpl Int 2022; 35:10728. [PMID: 36187462 PMCID: PMC9519788 DOI: 10.3389/ti.2022.10728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 09/05/2022] [Indexed: 11/25/2022]
Abstract
The impact of T cell-mediated rejection (TCMR) after liver transplantation (LT) on the alterations in the gut microbiota (GM) and associated intestinal environment represented by fecal organic acids (OAs) require further elucidation. A rat allogeneic LT model was prepared without immunosuppressants or antibiotics, and a syngeneic model was used as a control. Qualitative and quantitative analyses of fecal samples at fixed time points were performed. Correlation analyses were also performed between liver function and GMs and OA levels. In the allogeneic TCMR group, the number of predominant obligate anaerobes decreased as liver function declined. Clostridioides difficile, Enterobacteriaceae, Enterococcus, Streptococcus, and Staphylococcus were significantly increased. Regarding fecal OA concentration, short-chain fatty acid (SCFA) concentrations were depleted as liver function declined. In contrast, in the syngeneic group, GM and OAs exhibited only slight, transient, and reversible disturbances. In addition, alanine aminotransferase and total bilirubin were positively correlated with the number of Enterobacteriaceae and Enterococcus, and negatively correlated with the fecal concentration of SCFAs. The allogeneic TCMR model demonstrated distinct dysbiosis and depletion of fecal OAs as TCMR progressed after LT. The degree of graft injury was closely related to the number of specific bacterial strains and the concentrations of fecal SCFAs.
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Affiliation(s)
- Siyuan Yao
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- *Correspondence: Siyuan Yao, ; Shintaro Yagi,
| | - Shintaro Yagi
- Department of Surgery, Graduate School of Medicine, Kanazawa University, Ishikawa, Japan
- *Correspondence: Siyuan Yao, ; Shintaro Yagi,
| | - Eri Ogawa
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sena Iwamura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryuji Uozumi
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takuya Sugimoto
- Yakult Central Institute, Yakult Honsha Co., Ltd., Tokyo, Japan
| | - Takashi Asahara
- Yakult Central Institute, Yakult Honsha Co., Ltd., Tokyo, Japan
| | | | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Iwamura S, Kaido T, Wada A, Kido S, Harada D, Hirata M, Miyachi Y, Yao S, Yagi S, Kamo N, Morita S, Uemoto S, Hatano E. Perioperative Oral β-Hydroxy-β-Methylbutyrate Supplementation Ameliorates Sarcopenia in Rats Undergoing Major Hepatectomy. J Nutr Sci Vitaminol (Tokyo) 2022; 68:276-283. [PMID: 36047099 DOI: 10.3177/jnsv.68.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
β-Hydroxy-β-methylbutyrate (HMB), a metabolite of leucine, is known to increase muscle mass and strength. However, the effect of perioperative HMB supplementation in liver surgery is unclear. Moreover, the impact of HMB on the skeletal muscle fiber type also remains unclear. We investigated the impact of HMB on the body composition and skeletal muscle fiber type in sarcopenic rats undergoing major hepatectomy. Nine-week-old male F344/NSlc rats were maintained in hindlimb suspension (HLS) and were forcedly supplemented with HMB calcium salt (HMB-Ca, 0.58 g/kg×2 times) or distilled water in addition to free feeding. After 2 wk of HLS, the rats underwent 70% hepatectomy and were sacrificed 3 d after surgery. Body composition factors and the proportion of slow-twitch fibers in hindlimb muscles were evaluated. HMB maintained the body composition and hindlimb force and acted against their deterioration in sarcopenic rats, exerting a particular effect on lean mass weight, which was significant. In the histological study, HMB significantly increased the proportion of slow-twitch fibers in the soleus (p=0.044) and plantaris (p=0.001) of sarcopenic rats. HMB ameliorated deterioration of the body composition and increased the proportion of slow-twitch fibers in sarcopenic rats undergoing major hepatectomy.
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Affiliation(s)
- Sena Iwamura
- Department of Hepato-Biliary-Pancreatic and Transplant Surgery, Kyoto University
| | - Toshimi Kaido
- Department of Gastroenterological and General Surgery, St Luke's International Hospital
| | | | | | | | - Masaaki Hirata
- Department of Hepato-Biliary-Pancreatic and Transplant Surgery, Kyoto University
| | - Yosuke Miyachi
- Department of Hepato-Biliary-Pancreatic and Transplant Surgery, Kyoto University
| | - Siyuan Yao
- Department of Hepato-Biliary-Pancreatic and Transplant Surgery, Kyoto University
| | - Shintaro Yagi
- Department of Gastroenterological Surgery, Kanazawa University
| | - Naoko Kamo
- Department of Hepato-Biliary-Pancreatic and Transplant Surgery, Kyoto University
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Kyoto University
| | | | - Etsuro Hatano
- Department of Hepato-Biliary-Pancreatic and Transplant Surgery, Kyoto University
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Miyachi Y, Kaido T, Hirata M, Sharshar M, Macshut M, Yao S, Kamo N, Kai S, Yagi S, Uemoto S. Intraoperative High Fraction of Inspiratory Oxygen is Independently Associated with Worse Outcome After Living-Donor Liver Transplantation: A Retrospective Study. World J Surg 2022; 46:1776-1787. [PMID: 35419624 PMCID: PMC9007621 DOI: 10.1007/s00268-022-06544-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2022] [Indexed: 11/26/2022]
Abstract
Background Ischemia and reperfusion injury is an important factor that determines graft function after liver transplantation, and oxygen plays a crucial role in this process. However, the relationship between the intraoperative high fraction of inspiratory oxygen (FiO2) and living-donor-liver-transplantation (LDLT) outcome remains unclear. Patients and Methods A total of 199 primary adult-to-adult LDLT cases in Kyoto University Hospital between January 2010 and December 2017 were enrolled in this study. The intraoperative FiO2 was averaged using the total amount of intraoperative oxygen and air and defined as the calculated FiO2 (cFiO2). The cutoff value of cFiO2 was set at 0.5. Results Between the cFiO2 <0.5 (n = 156) and ≥0.5 group (n = 43), preoperative recipients’ background, donor factors, and intraoperative parameters were almost comparable. Postoperatively, the cFiO2 ≥0.5 group showed a higher early allograft dysfunction (EAD) rate (P = 0.049) and worse overall graft survival (P = 0.036) than the cFiO2 <0.5 group. Although the cFiO2 ≥0.5 was not an independent risk factor for EAD in multivariable analysis (OR 2.038, 95%CI 0.992–4.186, P = 0.053), it was an independent risk factor for overall graft survival after LDLT (HR 1.897, 95%CI 1.007–3.432, P = 0.048). Conclusion The results of this study suggest that intraoperative high FiO2 may be associated with worse graft survival after LDLT. Avoiding higher intraoperative FiO2 may be beneficial for LDLT recipients. Supplementary Information The online version contains supplementary material available at 10.1007/s00268-022-06544-7.
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Affiliation(s)
- Yosuke Miyachi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshimi Kaido
- Department of Gastroenterological and General Surgery, St. Luke’s International University Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo 104-8560 Japan
| | - Masaaki Hirata
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mohamed Sharshar
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mahmoud Macshut
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Siyuan Yao
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naoko Kamo
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinichi Kai
- Department of Anesthesia, Kyoto University Hospital, Kyoto, Japan
| | - Shintaro Yagi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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12
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Sekine Y, Iwasaki Y, Aoi T, Mikiko E, Hirata M, Kamatani Y, Matsuda K, Kokichi S, Yoshida T, Murakami Y, Fukui T, Akamatsu S, Ogawa O, Nakagawa H, Numakura K, Narita S, Momozawa Y, Habuchi T. Large-scale genomic analysis of renal cell carcinoma using 1,532 Japanese patients and 5,996 controls. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)01200-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Yao S, Kamo N, Taura K, Miyachi Y, Iwamura S, Hirata M, Kaido T, Uemoto S. ASO Visual Abstract: Muscularity Defined by the Combination of Muscle Quantity and Quality is Closely Related to Both Liver Hypertrophy and Postoperative Outcomes Following Portal Vein Embolization in Cancer Patients. Ann Surg Oncol 2021. [PMID: 34448050 DOI: 10.1245/s10434-021-10647-1] [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: 11/18/2022]
Affiliation(s)
- Siyuan Yao
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Naoko Kamo
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kojiro Taura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Gastroenterological and General Surgery, St. Luke's International Hospital, Tokyo, Japan
| | - Sena Iwamura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshimi Kaido
- Department of Gastroenterological and General Surgery, St. Luke's International Hospital, Tokyo, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Shiga University of Medical Science, Shiga, Japan
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14
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Yao S, Kamo N, Taura K, Miyachi Y, Iwamura S, Hirata M, Kaido T, Uemoto S. Muscularity Defined by the Combination of Muscle Quantity and Quality is Closely Related to Both Liver Hypertrophy and Postoperative Outcomes Following Portal Vein Embolization in Cancer Patients. Ann Surg Oncol 2021; 29:301-312. [PMID: 34333707 DOI: 10.1245/s10434-021-10525-w] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 07/14/2021] [Indexed: 01/06/2023]
Abstract
BACKGROUND Portal vein embolization (PVE) is a common procedure for preventing hepatic insufficiency after major hepatectomy. While evaluating the body composition of surgical patients is common, the impact of muscularity defined by both muscle quantity and quality on liver hypertrophy after PVE and associated outcomes after major hepatectomy in patients with hepatobiliary cancer remain unclear. METHODS This retrospective review included 126 patients who had undergone hepatobiliary cancer resection after PVE. Muscularity was measured on preoperative computed tomography images by combining the skeletal mass index and intramuscular adipose content. Various factors including the degree of hypertrophy (DH) of the future liver remnant and post-hepatectomy outcomes were compared according to muscularity. RESULTS DH did not differ by malignancy type. Patients with high muscularity had better DH after PVE (P = 0.028), and low muscularity was an independent predictor for poor liver hypertrophy after PVE [odds ratio (OR), 3.418; 95% confidence interval (CI), 1.129-10.352; P = 0.030]. In subgroup analyses in which patients were stratified into groups based on primary hepatobiliary tumors and metastases, low muscularity was associated with higher incidence of post-hepatectomy liver failure (PHLF) ≥ grade B (P = 0.018) and was identified as an independent predictor for high-grade PHLF (OR 3.931; 95% CI 1.113-13.885; P = 0.034) among the primary tumor group. In contrast, muscularity did not affect surgical outcomes in patients with metastases. CONCLUSIONS Low muscularity leads to poor liver hypertrophy after PVE and is also a predictor of PHLF, particularly in primary hepatobiliary cancer.
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Affiliation(s)
- Siyuan Yao
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Naoko Kamo
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kojiro Taura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Gastroenterological and General Surgery, St. Luke's International Hospital, Tokyo, Japan
| | - Sena Iwamura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshimi Kaido
- Department of Gastroenterological and General Surgery, St. Luke's International Hospital, Tokyo, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Shiga University of Medical Science, Otsu, Shiga, Japan
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15
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Sekine R, Hirata M, Ikezoe R, Jang S, Kubota Y, Kayano H, Sugata K, Aizawa T, Noguchi D, Kim D, Sugimoto Y, Matsuura R, Yamazaki H, Ichimura M, Yoshikawa M, Kohagura J, Nakashima Y, Ezumi N, Sakamoto M. Measurement of axial phase difference of density fluctuations owing to spontaneously excited waves by using microwave reflectometer on GAMMA 10/PDX. Rev Sci Instrum 2021; 92:053506. [PMID: 34243319 DOI: 10.1063/5.0043821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/14/2021] [Indexed: 06/13/2023]
Abstract
In the GAMMA 10/PDX tandem mirror, plasma with strong ion-temperature anisotropy is produced by using the ion cyclotron range of frequency waves. This anisotropy of ion temperature causes several Alfvén-Ion-Cyclotron (AIC) waves to spontaneously excite in the frequency range just below the ion cyclotron frequency. In addition, difference-frequency (DF) waves are excited in the radial inner region of the plasma by wave-wave coupling among the AIC waves. The radial density profiles were measured at multi-axial positions using a frequency-modulation reflectometer with an axial array of microwave antennas, and an axial variation of the density was found to be significant. In addition, a relative phase difference of the DF wave between axially separated two points was first obtained by finely choosing the probing frequency of the reflectometers with a maximum coherence used as a measure, indicating that the DF wave is a propagating wave, while the pump AIC waves are standing waves in the axial region of measurement.
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Affiliation(s)
- R Sekine
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - M Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - R Ikezoe
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
| | - S Jang
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Y Kubota
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - H Kayano
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - K Sugata
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - T Aizawa
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - D Noguchi
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - D Kim
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Y Sugimoto
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - R Matsuura
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - H Yamazaki
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - M Ichimura
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - M Yoshikawa
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - J Kohagura
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Y Nakashima
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - N Ezumi
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| | - M Sakamoto
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
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16
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Kamido H, Shimomiya D, Kogame T, Takimoto-Ito R, Kataoka TR, Hirata M, Ueshima C, Otsuka A, Ghazawi FM, Nomura T, Kambe N, Kabashima K. Inducible skin-associated lymphoid tissue (iSALT) in a patient with Schnitzler syndrome who manifested wheals on recurrent localized erythema. Br J Dermatol 2021; 184:1199-1201. [PMID: 33445206 DOI: 10.1111/bjd.19808] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 01/16/2023]
Affiliation(s)
- H Kamido
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - D Shimomiya
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - T Kogame
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - R Takimoto-Ito
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - T R Kataoka
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - M Hirata
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - C Ueshima
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - A Otsuka
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - F M Ghazawi
- Division of Dermatology, University of Ottawa, Ottawa, Ontario, Canada
| | - T Nomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - N Kambe
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - K Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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17
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Do LTK, Wittayarat M, Sato Y, Chatdarong K, Tharasanit T, Techakumphu M, Hirata M, Tanihara F, Taniguchi M, Otoi T. Comparison of Blastocyst Development between Cat-Cow and Cat-Pig Interspecies Somatic Cell Nuclear Transfer Embryos Treated with Trichostatin A. BIOL BULL+ 2021. [DOI: 10.1134/s1062359021020035] [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: 11/23/2022]
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18
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Hirata M, Yagi S, Shindo T, Yoshizawa A, Kiguchi G, Kaneshiro M, Yurugi K, Miyachi Y, Iwamura S, Yao S, Uemoto S. Donor-dominant one-way matching of human leukocyte antigen-A/B/DR alleles predicts graft-versus-host disease following living donor liver transplantation. Hepatol Res 2021; 51:135-148. [PMID: 33034106 DOI: 10.1111/hepr.13579] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/31/2020] [Accepted: 09/18/2020] [Indexed: 12/12/2022]
Abstract
AIM Graft-versus-host disease (GVHD) following liver transplantation is rare but fatal. Therefore, it is important to identify possible risk factors before transplantation. Although it has been suggested that donor-dominant one-way human leukocyte antigen (HLA) matching of three loci (HLA-A/B/DR) is associated with the occurrence of GVHD, the precise significance of HLA matching including HLA-C/DQ/DP remains unclear. METHODS We retrospectively analyzed the impact of donor-dominant one-way HLA matching at six HLA loci at the allele level on GVHD using clinical registry data from 1759 cases who underwent living donor liver transplantation between June 1990 and June 2019. We extracted cases with donor-dominant one-way HLA matching at the antigen level and reconfirmed them at the allele level using preserved DNA samples. RESULTS Three of four cases (75%) who developed GVHD showed donor-dominant one-way HLA matching at three HLA-A/B/DR loci. These cases also showed donor-dominant one-way HLA matching at HLA-C/DQ/DP. Three of six cases (50%) with donor-dominant one-way HLA matching at three loci of HLA-A/B/DR developed GVHD. Notably, none of the cases with donor-dominant one-way HLA matching at one or two HLA-A/B/DR loci developed GVHD, irrespective of matching status at HLA-C/DQ/DP. The HLA matching status at the antigen level was revised in 22 of 56 cases, following reconfirmation at the allele level. CONCLUSIONS Pairing of donors and recipients with donor-dominant one-way HLA matching at three HLA-A/B/DR loci should be avoided to prevent GVHD. No impact of HLA-C/DQ/DP on GVHD was identified. For liver transplantation, HLA genotypes should be determined at the allele level.
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Affiliation(s)
- Masaaki Hirata
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shintaro Yagi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takero Shindo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Atsushi Yoshizawa
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Gozo Kiguchi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masakatsu Kaneshiro
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kimiko Yurugi
- Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, Kyoto, Japan
| | - Yosuke Miyachi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sena Iwamura
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Siyuan Yao
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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19
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Miyachi Y, Kaido T, Hirata M, Iwamura S, Yao S, Shirai H, Kamo N, Uozumi R, Yagi S, Uemoto S. The combination of a male donor's high muscle mass and quality is an independent protective factor for graft loss after living donor liver transplantation. Am J Transplant 2020; 20:3401-3412. [PMID: 32243072 DOI: 10.1111/ajt.15884] [Citation(s) in RCA: 4] [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: 10/13/2019] [Revised: 03/11/2020] [Accepted: 03/18/2020] [Indexed: 01/25/2023]
Abstract
We evaluated the hypothesis that grafts from donors with high muscle mass and quality may have a better outcome after living-donor-liver-transplantation (LDLT) than those from usual donors. A total of 376 primary adult-to-adult LDLT cases were enrolled in this study. Donor skeletal muscle mass index (SMI) and intramuscular adipose tissue content (IMAC) were used as markers of muscle mass and quality. In male donor cases (n = 198), those with higher SMI and lower IMAC than age-adjusted values were defined as the "high muscularity donors" (n = 38) and the others were defined as the "control" (n = 160). The high muscularity donor showed better 1-year (97% vs 82%, P = .020) and overall graft survival rate (88% vs 67%, P = .024) than the control group after LDLT. Contrastingly, the influence of the muscularity was not observed in female donor cases. Multivariable analysis including donor age confirmed that a high muscularity donor was an independent protective factor for overall graft survival after LDLT (hazard ratio, 0.337; 95% CI: 0.101-0.838; P = .017). Our study first confirmed that high muscle mass and quality of a male donor is a protective factor of allograft loss after LDLT, independently from donor age.
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Affiliation(s)
- Yosuke Miyachi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshimi Kaido
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sena Iwamura
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Siyuan Yao
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hisaya Shirai
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naoko Kamo
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryuji Uozumi
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shintaro Yagi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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20
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Yagi S, Hirata M, Miyachi Y, Uemoto S. Liver Regeneration after Hepatectomy and Partial Liver Transplantation. Int J Mol Sci 2020; 21:ijms21218414. [PMID: 33182515 PMCID: PMC7665117 DOI: 10.3390/ijms21218414] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [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] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 02/07/2023] Open
Abstract
The liver is a unique organ with an abundant regenerative capacity. Therefore, partial hepatectomy (PHx) or partial liver transplantation (PLTx) can be safely performed. Liver regeneration involves a complex network of numerous hepatotropic factors, cytokines, pathways, and transcriptional factors. Compared with liver regeneration after a viral- or drug-induced liver injury, that of post-PHx or -PLTx has several distinct features, such as hemodynamic changes in portal venous flow or pressure, tissue ischemia/hypoxia, and hemostasis/platelet activation. Although some of these changes also occur during liver regeneration after a viral- or drug-induced liver injury, they are more abrupt and drastic following PHx or PLTx, and can thus be the main trigger and driving force of liver regeneration. In this review, we first provide an overview of the molecular biology of liver regeneration post-PHx and -PLTx. Subsequently, we summarize some clinical conditions that negatively, or sometimes positively, interfere with liver regeneration after PHx or PLTx, such as marginal livers including aged or fatty liver and the influence of immunosuppression.
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21
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Ota N, Hirata M, Yasui K, Yamamoto A, Maki S, Ito Y, Onoe T, Ogawa H, Asakura H, Murayama S, Deguchi S, Mitsuya K, Harada H, Hayashi N, Nishimura T. LINAC-Based Stereotactic Irradiation For Patients With Up To Ten Brain Metastases. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Miyachi Y, Yagi S, Hirata M, Iwamura S, Yao S, Shirai H, Okumura S, Iida T, Ito T, Uozumi R, Kaido T, Uemoto S. Etiology of Liver Steatosis Influences the Severity of Ischemia/Reperfusion Injury and Survival After Liver Transplantation in Rats. Liver Transpl 2020; 26:1504-1515. [PMID: 32511857 DOI: 10.1002/lt.25814] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/27/2020] [Accepted: 05/21/2020] [Indexed: 01/13/2023]
Abstract
Liver steatosis is a leading cause of graft disposal in liver transplantation, though the degree of steatosis is often the single factor determining acceptability of the graft. We investigated how the cause of liver steatosis affects graft function in rat orthotopic liver transplantation (OLT). OLT was performed using 2 types of steatotic liver grafts: the fasting and hyperalimentation (FHA) model and the methionine- and choline-deficient diet models. The FHA and 4-week feeding of a methionine- and choline-deficient diet (MCDD4wk) groups showed similar liver triglyceride levels without signs of steatohepatitis. Therefore, the 2 groups were compared in the following experiment. With 6-hour cold storage, the 7-day survival rate after OLT was far worse in the FHA than in the MCDD4wk group (0% versus 100%, P = 0.002). With 1-hour cold storage, the FHA group showed higher aspartate aminotransferase and alanine aminotransferase levels and histological injury scores in zones 1 and 2 at 24 hours after reperfusion than the normal liver and MCDD4wk groups. Intrahepatic microcirculation and tissue adenosine triphosphate levels were significantly lower in the FHA group after reperfusion. Hepatocyte necrosis, sinusoidal endothelial cell injury, and abnormal swelling of the mitochondria were also found in the FHA group after reperfusion. Tissue malondialdehyde levels were higher in the MCDD4wk group before and after reperfusion. However, the grafts up-regulated several antioxidant enzymes soon after reperfusion. Even though the degree of steatosis was equivalent, the 2 liver steatosis models possessed quite unique basal characteristics and showed completely different responses against ischemia/reperfusion injury and survival after transplantation. Our results demonstrate that the degree of fat accumulation is not a single determinant for the usability of steatotic liver grafts.
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Affiliation(s)
- Yosuke Miyachi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Shintaro Yagi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Sena Iwamura
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Siyuan Yao
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Hisaya Shirai
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Shinya Okumura
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Taku Iida
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Takashi Ito
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Ryuji Uozumi
- Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshimi Kaido
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
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23
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Pego AMF, Leyton V, Miziara ID, Bortolin RH, Freitas RCC, Hirata M, Tomaz PRX, Santos JR, Santos PCJL, Yonamine M. SNPs from BCHE and DRD3 genes associated to cocaine abuse amongst violent individuals from Sao Paulo, Brazil. Forensic Sci Int 2020; 317:110511. [PMID: 32998065 DOI: 10.1016/j.forsciint.2020.110511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 09/05/2020] [Accepted: 09/13/2020] [Indexed: 11/29/2022]
Abstract
Violence and drug abuse are highly destructive phenomena found world-wide, especially in Brazil. They seem to rise proportionally to one another and possibly related. Additionally, genetics may also play a role in drug abuse. This study has focused on identifying the use of cocaine within postmortem cases arriving at the Institute of Legal Medicine of Sao Paulo as well as the presence of certain single nucleotide polymorphisms (SNPs) to better understand one's susceptibility to abuse the drug. Both hair and blood samples have been extracted through a simple methanol overnight incubation or a rapid dilute-and-shoot method, respectively. The samples were then analyzed using an UPLC-ESI-MS/MS and genotyped through RT-PCR. Statistical analyses were performed via SPSS software. From 105 postmortem cases, 53% and 51% of the cases shown to be positive for cocaine in hair and blood, respectively. Genetic wise, a significant difference has been observed for SNP rs4263329 from the BCHE gene with higher frequencies of the genotypes A/G and G/G seen in cocaine users (OR=8.91; 95%CI=1.58-50.21; p=0.01). Likewise, also SNP rs6280 from the DRD3 gene presented a significant association, with both genotypes T/C and C/C being more frequent in users (OR=4.96; 95% CI=1.07-23.02; p=0.04). To conclude, a rather high proportion of cocaine has been found, which may suggest a connotation between the use of the drug and risky/violent behaviors. Additionally, significant associations were also found within two SNPs related to cocaine use, however, due to several inherent limitations, these must be confirmed.
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Affiliation(s)
- A M F Pego
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil; Dutch Screening Group, Maastricht, Netherlands.
| | - V Leyton
- Department of Legal Medicine, Ethics and Occupational Health, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - I D Miziara
- Department of Legal Medicine, Ethics and Occupational Health, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil; Institute of Legal Medicine of São Paulo, Sao Paulo, Brazil
| | - R H Bortolin
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - R C C Freitas
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - M Hirata
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - P R X Tomaz
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - J R Santos
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - P C J L Santos
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, University of Sao Paulo Medical School, Sao Paulo, Brazil; Department of Pharmacology, Paulista Medical School, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - M Yonamine
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
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Sharshar M, Yagi S, Iida T, Yao S, Miyachi Y, Macshut M, Iwamura S, Hirata M, Ito T, Hata K, Taura K, Okajima H, Kaido T, Uemoto S. Liver transplantation in patients with portal vein thrombosis: A strategic road map throughout management. Surgery 2020; 168:1160-1168. [PMID: 32861438 DOI: 10.1016/j.surg.2020.07.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/06/2020] [Accepted: 07/20/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Liver transplantation in the setting of portal vein thrombosis is an intricate issue that occasionally necessitates extraordinary procedures for portal flow restoration. However, to date, there is no consensus on a persistent management strategy, particularly with extensive forms. This work aims to introduce our experience-based surgical management algorithm for portal vein thrombosis during liver transplantation and to clarify some of the debatable circumstances associated with this problematic issue. METHODS Between 2006 and 2019, 494 adults underwent liver transplantation at our institute. Ninety patients had preoperative portal vein thrombosis, and 79 patients underwent living donor liver transplantation. Our algorithm trichotomized the management plan into 3 pathways based on portal vein thrombosis grade. The surgical procedures implemented included thrombectomy, interposition vein grafts, jump grafts from the superior mesenteric vein, jump grafts from a collateral and renoportal anastomosis in 56, 13, 11, 4, and 2 patients, respectively. Four patients with mural thrombi did not require any special intervention. RESULTS Thirteen patients experienced posttransplant portal vein complications. They all proved to have a patent portal vein by the end of follow-up regardless of the management modality. No significant survival difference was observed between cohorts with versus without portal vein thrombosis. The early graft loss rate was significantly higher with advanced grades (P = .048) as well as technically demanding procedures (P = .032). CONCLUSION A stepwise broad-minded strategy should always be adopted when approaching advanced portal vein thrombosis during liver transplantation. An industrious preoperative evaluation should always be carried out to locate the ideal reliable source for portal flow restoration.
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Affiliation(s)
- Mohamed Sharshar
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Hepato-Pancreato-Biliary Surgery, National Liver Institute, Menoufia University, Shebin El kom, Egypt
| | - Shintaro Yagi
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Taku Iida
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Siyuan Yao
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mahmoud Macshut
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Hepato-Pancreato-Biliary Surgery, National Liver Institute, Menoufia University, Shebin El kom, Egypt
| | - Sena Iwamura
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takashi Ito
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Koichiro Hata
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kojiro Taura
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hideaki Okajima
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshimi Kaido
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Department of Surgery, Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Macshut M, Kaido T, Yao S, Miyachi Y, Sharshar M, Iwamura S, Hirata M, Shirai H, Kamo N, Yagi S, Uemoto S. Visceral adiposity is an independent risk factor for high intra-operative blood loss during living-donor liver transplantation; could preoperative rehabilitation and nutritional therapy mitigate that risk? Clin Nutr 2020; 40:956-965. [PMID: 32665100 DOI: 10.1016/j.clnu.2020.06.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Blood loss during liver transplantation (LT) is one of the major concerns of the transplant team, given the potential negative post-transplant outcomes related to it. Blood loss was reported to be higher in certain body compositions, such as obese patients, undergoing LT. Therefore, we aimed to study the risk factors for high blood loss (HBL) during adult living donor liver transplant (ALDLT) including the body composition markers; visceral-to-subcutaneous adipose tissue area ratio (VSR), skeletal muscle index and intramuscular adipose tissue content. In June 2015, an aggressive perioperative rehabilitation and nutritional therapy (APRNT) program was prescribed in our institute for the patients with abnormal body composition. METHODS We retrospectively analyzed 394 patients who had undergone their first ALDLT between 2006 and 2019. Risk factors for HBL were analyzed in the total cohort. Differences in blood loss and risk factors were analyzed in relation to the APRNT. RESULTS Multivariate risk factor analysis in the total cohort showed that a high VSR (odds ratio (OR): 1.98, 95% confidence interval (CI): 1.19-3.29, P = 0.009), was an independent risk factor for HBL during ALDLT, as well as a history of upper abdominal surgery, simultaneous splenectomy and the presence of a large amount of ascites. After the introduction of the APRNT, a significantly lower blood loss was observed during the ALDLT recipient operation (P = 0.003). Moreover, the significant difference in blood loss observed between normal and high VSR groups before the application of the APRNT (P < 0.001), was not observed with the APRNT (P = 0.85). Likewise, before the APRNT, only high VSR was a risk factor for HBL by multivariate analysis (OR: 2.34, CI: 1.33-4.09, P = 0.003). Whereas with the APRNT, high VSR was no longer a significant risk factor for HBL even by univariate analysis (OR: 0.89, CI: 0.26-3.12, P = 0.86). CONCLUSION Increased visceral adiposity was an independent risk factor for high intraoperative blood loss during ALDLT recipient operation. With APRNT, high VSR was not associated with high blood loss. Therefore, APRNT might have mitigated the risk of high blood loss related to high visceral adiposity.
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Affiliation(s)
- Mahmoud Macshut
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Hepato-Pancreato-Biliary Surgery, National Liver Institute, Menoufia University, Egypt
| | - Toshimi Kaido
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Gastroenterological and General Surgery, St. Luke's International Hospital, Tokyo, Japan.
| | - Siyuan Yao
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mohamed Sharshar
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Hepato-Pancreato-Biliary Surgery, National Liver Institute, Menoufia University, Egypt
| | - Sena Iwamura
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hisaya Shirai
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naoko Kamo
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shintaro Yagi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Yao S, Kaido T, Uozumi R, Hirata M, Iwamura S, Miyachi Y, Macshut M, Sharshar M, Yagi S, Uemoto S. Diagnostic potential of presepsin in bacterial infection following hepato-biliary-pancreatic surgery: A prospective observational study. J Hepatobiliary Pancreat Sci 2020; 27:756-766. [PMID: 32654388 DOI: 10.1002/jhbp.802] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 06/24/2020] [Accepted: 07/05/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND/PURPOSE The aim in the present study was to elucidate the diagnostic ability of presepsin for postoperative infectious complications following major hepato-biliary-pancreatic (HBP) surgery. METHODS Between 2017 and 2019, 50 patients with major hepatectomy and 55 patients with pancreatoduodenectomy were enrolled. Presepsin, the neutrophil-to-lymphocyte ratio (NLR), C-reactive protein (CRP), and procalcitonin (PCT) were prospectively measured for the first 2 weeks after surgery. The diagnostic abilities of these biomarkers were compared multidirectionally. RESULTS All biomarkers returned to normal ranges within 2 weeks after surgery. However, presepsin, unlike the other biomarkers, showed less nonspecific elevation in response to the invasiveness of the surgical procedure immediately after surgery. Receiver operating characteristic curve analysis revealed that presepsin (area under the curve (AUC), 0.959) had a greater ability to discriminate bacterial infection than PCT (AUC, 0.723), CRP (AUC, 0.800), and the NLR (AUC, 0.804). A very high sensitivity of 93.3% and a specificity of 89.2% were achieved at the cutoff value of 620 pg/mL. Multivariable analysis revealed that presepsin on day 3 (P = .013) independently predicted bacterial infection after HBP surgery. CONCLUSIONS Presepsin may have a better predictive ability than existing biomarkers for infection following major HBP surgery, which may help us achieve faster and more accurate detection of bacterial infections.
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Affiliation(s)
- Siyuan Yao
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshimi Kaido
- Department of Department of Gastroenterological and General Surgery, St. Luke's International Hospital, Tokyo, Japan
| | - Ryuji Uozumi
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Hirata
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sena Iwamura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mahmoud Macshut
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Hepato-Pancreato-Biliary Surgery, National Liver Institute, Menoufia University, Al Minufiyah, Egypt
| | - Mohamed Sharshar
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Hepato-Pancreato-Biliary Surgery, National Liver Institute, Menoufia University, Al Minufiyah, Egypt
| | - Shintaro Yagi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Nguyen NT, Hirata M, Tanihara F, Sato Y, Namula Z, Le QA, Wittayarat M, Fahrudin M, Otti T. In vitro Development of Zona Pellucida-free Porcine Zygotes Cultured Individually after Vitrification. Cryo Letters 2020; 41:86-91. [PMID: 33988658] [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: 06/12/2023]
Abstract
BACKGROUND Cryopreservation of zona pellucida (ZP)-free embryos provides more options for somatic cell nuclear transfer, particularly during handmade cloning. OBJECTIVE This study investigated whether the removal of the ZP affects the development of porcine zygotes after vitrification and warming. MATERIALS AND METHODS We determined the appropriate volume of the corresponding medium for the individual culture of ZP-intact and -free embryos and evaluated the protection effect of ZP during cryopreservation on the resulting development of the vitrified-warmed zygotes. RESULTS The volume of culture medium influenced the development of ZP-intact zygotes, and a volume of 15 µL was most suitable for their development. However, the volume of culture medium did not modify the development of ZP-free zygotes. The removal of the ZP before vitrification did not adversely affect embryonic development or quality of the resulting blastocysts. CONCLUSION Our results suggest that the removal of the ZP does not cause detrimental effects to the development of vitrified-warmed zygotes.
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Affiliation(s)
| | - M Hirata
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan.
| | - F Tanihara
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - Y Sato
- School of Biological Science, Tokai University, Sapporo, Japan
| | - Z Namula
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan; College of Agricultural Science, Guangdong Ocean University, Guangdong, China
| | - Q A Le
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - M Wittayarat
- Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand
| | - M Fahrudin
- Faculty of Veterinary Science, Bogor Agricultural University, Indonesia
| | - T Otti
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
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Kita N, Nagao Y, Nabeshima Y, Yamane I, Hirata M, Hatakeyama K. Formation of a calcium oxalate urethral stone in a 3-year-old boy due to hypocitraturia. IJU Case Rep 2020; 3:49-52. [PMID: 32743468 PMCID: PMC7292182 DOI: 10.1002/iju5.12140] [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: 09/25/2019] [Accepted: 12/12/2019] [Indexed: 11/09/2022] Open
Abstract
INTRODUCTION Urolithiasis in children is often due to metabolic abnormalities (e.g. hypocitraturia) and hence recurs frequently. CASE PRESENTATION A 3-year-old boy presented with gross hematuria. Computed tomography detected a urethral calculus. The calculus was removed surgically. The stone was composed of calcium oxalate. Although oxalate and uric acid levels in the urine were within normal ranges, urine calcium was moderately elevated and urine citrate was substantially low. Urinalyses of the parents revealed that the father had acidic hypocitraturic urine, containing oxalate crystals, and the mother had hypercalciuria. Administration of oral citrate acid normalized urine citrate levels and eliminated the oxalate crystals, from the boy and his father. CONCLUSION Although preventing urolithiasis using oral citrate is common in the adult population, this preventive measure is not well recognized in children, thus warranting further study.
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Affiliation(s)
- Nobuhisa Kita
- Department of PediatricsFukuoka Tokushukai HospitalKasugaFukuokaJapan
| | - Yoshiro Nagao
- Department of PediatricsFukuoka Tokushukai HospitalKasugaFukuokaJapan
| | | | - Ichiro Yamane
- Department of PediatricsFukuoka Tokushukai HospitalKasugaFukuokaJapan
| | - Masaaki Hirata
- Department of PediatricsFukuoka Tokushukai HospitalKasugaFukuokaJapan
| | - Kuniya Hatakeyama
- Department of PediatricsFukuoka Tokushukai HospitalKasugaFukuokaJapan
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Watanabe Y, Nagao Y, Endo H, Yamane I, Hirata M, Hatakeyama K. An intubated 7-month-old infant with a retropharyngeal abscess and multidrug-resistant Streptococcus mitis. Clin Case Rep 2019; 7:2443-2448. [PMID: 31893077 PMCID: PMC6935668 DOI: 10.1002/ccr3.2528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 09/19/2019] [Accepted: 10/09/2019] [Indexed: 12/23/2022] Open
Abstract
The profile of antimicrobial resistance (ie, antibiogram) may be disparate between children and adults. An infant developed severe deep neck infection with a multidrug-resistant microbe. The microbe was more drug-resistant in children than in adults, in our hospital. Treatment of a child should be guided by the antibiogram obtained from children.
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Affiliation(s)
| | - Yoshiro Nagao
- Department of PediatricsFukuoka Tokushukai HospitalKasugaJapan
| | - Hisashi Endo
- Department of PediatricsFukuoka Tokushukai HospitalKasugaJapan
| | - Ichiro Yamane
- Department of PediatricsFukuoka Tokushukai HospitalKasugaJapan
| | - Masaaki Hirata
- Department of PediatricsFukuoka Tokushukai HospitalKasugaJapan
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30
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Asano K, Sagara H, Ichinose M, Hirata M, Nakajima A, Ortega H, Tohda Y. P213 PHASE 2 STUDY RESULTS OF DP2-ANTAGONIST GB001 ON ASTHMA WORSENING AND OTHER ASTHMA CONTROL MARKERS. Ann Allergy Asthma Immunol 2019. [DOI: 10.1016/j.anai.2019.08.279] [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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Nakashima C, Ishida Y, Nakagawa K, Irie H, Hirata M, Kataoka T, Otsuka A, Kabashima K. Identification of CD49a+ CD8+ resident memory T cells in vitiligo-like lesions associated with nivolumab treatment for melanoma. J Eur Acad Dermatol Venereol 2019; 34:e79-e82. [PMID: 31571305 DOI: 10.1111/jdv.15970] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C Nakashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Y Ishida
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - K Nakagawa
- Department of Dermatology, Saiseikai Tondabayashi Hospital, Osaka, Japan
| | - H Irie
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - M Hirata
- Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - T Kataoka
- Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - A Otsuka
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Translational Research Department for Skin and Brain Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - K Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Singapore Immunology Network (SIgN) and Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
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Hirata M, Shirakata Y, Yamanaka K. Duodenal intussusception secondary to ampullary adenoma: A case report. World J Clin Cases 2019; 7:1857-1864. [PMID: 31417932 PMCID: PMC6692261 DOI: 10.12998/wjcc.v7.i14.1857] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 05/13/2019] [Accepted: 05/23/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Because the duodenum is fixed onto the retroperitoneum, duodenal intussusception is usually impossible except in cases of malrotational abnormality. Although cases of duodenal intussusception without malrotational abnormalities have been reported, it is unclear whether they constitute true intussusception or simple mucosal prolapse.
CASE SUMMARY A 66-year-old woman presented with whole-body edema and malaise. Blood analysis indicated severe anemia and cholestasis. Endoscopic examination revealed a pedunculate polyp on the second part of the duodenum that migrated distally with mucosal elongation. Computed tomography showed duodenal intussusception. A tumor as the lead point and retroperitoneal structure, including the head of the pancreas and fat, invaginated beyond the duodenojejunal flexure. She was diagnosed with ampullary adenoma caused repeated intussusception that reduced spontaneously and underwent pancreaticoduodenectomy. Laparotomy showed tumor prolapse beyond the duodenojejunal flexure without intussusception. There was no evidence of malrotational abnormality. She was discharged with no complications.
CONCLUSION We report true duodenal intussusception without malrotational abnormality. This phenomenon was also associated with mucosal prolapse.
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Affiliation(s)
- Masaaki Hirata
- Department of Surgery, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo 660-0892, Japan
| | - Yoshiharu Shirakata
- Department of Surgery, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo 660-0892, Japan
| | - Kenya Yamanaka
- Department of Surgery, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo 660-0892, Japan
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Kogame T, Takegami T, Sakai T, Kataoka T, Hirata M, Budair F, Ueshima C, Matsui M, Nomura T, Kabashima K. Immunohistochemical analysis of class‐switched subtype of primary cutaneous marginal zone lymphoma in terms of inducible skin‐associated lymphoid tissue. J Eur Acad Dermatol Venereol 2019; 33:e401-e403. [DOI: 10.1111/jdv.15703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- T. Kogame
- Department of Dermatology Kyoto University Graduate School of Medicine Kyoto Japan
- Shiga General Hospital Moriyama Japan
| | - T. Takegami
- Department of Dermatology Kyoto University Graduate School of Medicine Kyoto Japan
| | - T.R. Sakai
- Department of Dermatology Kyoto University Graduate School of Medicine Kyoto Japan
| | - T.R. Kataoka
- Department of Diagnostic Pathology Kyoto University Hospital Kyoto Japan
| | - M. Hirata
- Department of Diagnostic Pathology Kyoto University Hospital Kyoto Japan
| | - F.M. Budair
- Department of Dermatology Kyoto University Graduate School of Medicine Kyoto Japan
| | - C. Ueshima
- Department of Diagnostic Pathology Kyoto University Hospital Kyoto Japan
| | - M. Matsui
- Ijinkai Takeda General Hospital Kyoto Japan
| | - T. Nomura
- Department of Dermatology Kyoto University Graduate School of Medicine Kyoto Japan
| | - K. Kabashima
- Department of Dermatology Kyoto University Graduate School of Medicine Kyoto Japan
- A*STAR, Singapore Immunology Network (SIgN)/Skin Research Institute of Singapore (SRIS) Singapore Singapore
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Yasui K, Katagiri H, Onoe T, Ogawa H, Harada H, Asakura H, Maki S, Nakura A, Ito Y, Hirata M, Murayama S, Honda Y, Miyagi M, Wasa J, Murata H, Takahashi M, Nishimura T. PO-0880 Validation of a predictive model for survival in patients receiving radiotherapy for bone metastases. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31300-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Nishimura T, Yoshida K, Kawata Y, Takeuchi Y, Kakiuchi N, Shiozawa Y, Aoki K, Hirata M, Kataoka TR, Sakurai T, Baba S, Shiraishi Y, Chiba K, Takeuchi K, Haga H, Miyano S, Toi M, Ogawa S. Abstract P3-06-04: Clonal evolution of non-malignant proliferative lesions into breast cancers. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p3-06-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
[Introduction] Non-malignant proliferative lesions in the breast have been implicated in the development of invasive breast cancer. Previous studies showed that adjacent atypical proliferative lesions and breast cancers shared common genetic alterations, suggesting that these evolved from the same ancestral cell. However, the clonal structure of atypical proliferative lesions and their clonal dynamics during progression to cancer are poorly understood. In this study, we compared genetic profiles (with and without pathogenic germline mutations) of normal mammary ducts, non-malignant proliferative lesions, and cancer tissues from the same patients to illustrate the clonal evolution of cancer from a non-malignant epithelial cell.
[Methods] Multiple samples were collected from different proliferative lesions within the cancer-borne breast, including invasive cancers, using micro-dissection from formalin-fixed, paraffin-embedded surgical specimens. Somatic mutations and copy number alterations (CNAs) were then evaluated by whole exome sequencing.
[Results] We analyzed a total of 34 samples from 5 premenopausal females carrying estrogen receptor-positive cancers, where the samples were obtained from normal ducts (N = 6), non-atypical (N = 1) and atypical (N = 8) proliferative lesions, and non-invasive (N = 16) and invasive (N = 3) cancers. The number of somatic mutations per sample ranged from 1 to 276 and increased with disease progression, regardless of the germline mutation status. Two cases with bilateral cancers had a pathogenic germline mutation of either BRCA2 or TP53, where no somatic mutations or CNAs were shared by individual proliferative lesions, suggesting multifocal independent cancerous evolutions. By contrast, in the remaining three unilateral cases, no pathogenic germline mutations were detected, but all proliferative lesions, which were separated by a distance of 7-25 mm, shared one or more driver alterations, such as an AKT1 mutation (UID: KU01), concurrent 1q gain and 16q loss (der(1;16)) (UID: KU02), and a GATA3 mutation and der(1;16) (UID: KU03), while harboring private mutations and/or CNAs of their own. The phylogenetic analysis based on the number of shared mutations predicted an early origin of these founder mutations, which frequently predated decades before the onset of cancer.
[Conclusions] Our results suggest that early breast cancer development is shaped by the evolution of multiple precancerous clones. These clones are originated from a common ancestor that acquired a founder mutation long before the onset of cancer, followed by branching evolution of multiple clones that acquired additional driver mutations of their own, from which an invasive cancer ultimately develops. In hereditary cases, this process is thought to be substantially promoted multi-focally from within the entire breasts by a germline mutation shared by all mammary cells, frequently resulting in bilateral and/or multifocal breast cancers. Our findings provide unique insight into the early development of breast cancer.
Citation Format: Nishimura T, Yoshida K, Kawata Y, Takeuchi Y, Kakiuchi N, Shiozawa Y, Aoki K, Hirata M, Kataoka TR, Sakurai T, Baba S, Shiraishi Y, Chiba K, Takeuchi K, Haga H, Miyano S, Toi M, Ogawa S. Clonal evolution of non-malignant proliferative lesions into breast cancers [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P3-06-04.
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Affiliation(s)
- T Nishimura
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - K Yoshida
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Y Kawata
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Y Takeuchi
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - N Kakiuchi
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Y Shiozawa
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - K Aoki
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - M Hirata
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - TR Kataoka
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - T Sakurai
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - S Baba
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Y Shiraishi
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - K Chiba
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - K Takeuchi
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - H Haga
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - S Miyano
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - M Toi
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - S Ogawa
- Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kyoto University Hospital, Kyoto, Japan; Pathology Project for Molecular Targets, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan; Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Kogame T, Hirata M, Kataoka T, Seidel J, Ueshima C, Matsui M, Nomura T, Kabashima K. Presence of SCF/CXCL12 double-positive large blast-like cells at the site of cutaneous extramedullary haematopoiesis. J Eur Acad Dermatol Venereol 2018; 32:e465-e466. [DOI: 10.1111/jdv.15068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- T. Kogame
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
- Ijinkai Takeda General Hospital; Kyoto Japan
| | - M. Hirata
- Department of Diagnostic Pathology; Kyoto University Hospital; Kyoto Japan
| | - T.R. Kataoka
- Department of Diagnostic Pathology; Kyoto University Hospital; Kyoto Japan
| | - J.A. Seidel
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - C. Ueshima
- Department of Diagnostic Pathology; Kyoto University Hospital; Kyoto Japan
| | - M. Matsui
- Ijinkai Takeda General Hospital; Kyoto Japan
| | - T. Nomura
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - K. Kabashima
- Department of Dermatology; Kyoto University Graduate School of Medicine; Kyoto Japan
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Nishio K, Tanihara F, Nguyen TV, Kunihara T, Nii M, Hirata M, Takemoto T, Otoi T. Effects of voltage strength during electroporation on the development and quality of in vitro-produced porcine embryos. Reprod Domest Anim 2018; 53:313-318. [PMID: 29135047 DOI: 10.1111/rda.13106] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 10/10/2017] [Indexed: 12/20/2022]
Abstract
This study was conducted to determine suitable conditions for an experimental method in which the CRISPR/Cas9 system is introduced into in vitro-produced porcine zygotes by electroporation. In the first experiment, when putative zygotes derived from in vitro fertilization (IVF) were electroporated by either unipolar or bipolar pulses, keeping the voltage, pulse duration and pulse number fixed at 30 V/mm, 1 msec and five repeats, respectively, the rate of blastocyst formation from zygotes electroporated by bipolar pulses decreased compared to zygotes electroporated by unipolar pulses. In the second experiment, the putative zygotes were electroporated by electroporation voltages ranging from 20 V/mm-40 V/mm with five 1-msec unipolar pulses. The rate of cleavage and blastocyst formation of zygotes electroporated at 40 V/mm was significantly lower (p < .05) than that of zygotes electroporated at less than 30 V/mm. Moreover, the apoptotic nuclei indices of blastocysts derived from zygotes electroporated by voltages greater than 30 V/mm significantly increased compared with those from zygotes electroporated by voltages less than 25 V/mm (p < .05). When zygotes were electroporated with Cas9 mRNA and single-guide RNA (sgRNA) targeting site in the FGF10 exon 3, the proportions of blastocysts with targeted genomic sequences were 7.7% (2/26) and 3.6% (1/28) in the embryos derived from zygotes electroporated at 25 V/mm and 30 V/mm, respectively. Our results indicate that electroporation at 25 V/mm may be an acceptable condition for introducing Cas9 mRNA and sgRNA into pig IVF zygotes under which the viability of the embryos is not significantly affected.
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Affiliation(s)
- K Nishio
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - F Tanihara
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - T-V Nguyen
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - T Kunihara
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - M Nii
- Tokushima Prefectural Livestock Research Institute, Tokushima, Japan
| | - M Hirata
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - T Takemoto
- Institute for Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - T Otoi
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
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Cho T, Higaki H, Hirata M, Hojo H, Ichimura M, Ishii K, Itakura A, Katanuma I, Kohagura J, Nakashima Y, Saito T, Tatematsu Y, Yoshikawa M, Itoh H, Minami R, Nagashima S, Numakura T, Watanabe H, Yoshida M, Yatsu K, Miyoshi S. Summarized Scaling Laws of Plasma Confining Potential Formation and Effects in the Gamma 10 Tandem Mirror. Fusion Science and Technology 2018. [DOI: 10.13182/fst03-a11963560] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Cho
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - H. Higaki
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - M. Hirata
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - H. Hojo
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - M. Ichimura
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - K. Ishii
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - A. Itakura
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - I. Katanuma
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - J. Kohagura
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Nakashima
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - T. Saito
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Tatematsu
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshikawa
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - H. Itoh
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - R. Minami
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - S. Nagashima
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - T. Numakura
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - H. Watanabe
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshida
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - K. Yatsu
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - S. Miyoshi
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
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Nguyen TV, Tanihara F, Hirata M, Hirano T, Nishio K, Kim Do LT, Nguyen TV, Nii M, Otoi T. Effects of Antifreeze Protein Supplementation on the Development of Porcine Morulae Stored at Hypothermic Temperatures. Cryo Letters 2018; 39:131-136. [PMID: 29734422] [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: 06/08/2023]
Abstract
BACKGROUND Short-term storage is valuable method to reuse manipulated embryos. OBJECTIVE The present study evaluated the effects of antifreeze protein (AFP) supplementation on the quality and development of in vitro-produced porcine morulae after short-term storage (24 h). MATERIALS AND METHODS The morulae were stored with various concentrations of AFP type III for 24 h at 5, 15 and 25C. RESULTS Supplementation of AFP type III (1.0 microgram per mL) improved the developmental competence of embryos stored at 25C. The proportions of DNA-fragmented nuclei in the blastocysts did not differ between the embryos stored at 25C and the control embryos without storage treatment. However, the developmental competence of embryos stored at hypothermic temperatures decreased relative to that of the control embryos. CONCLUSION Supplementation of AFP type III (1.0 microgram per mL) maintained the quality of embryos stored at 25C, but did not have beneficial effects on the development of embryos stored at hypothermic temperatures.
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Affiliation(s)
- T V Nguyen
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - F Tanihara
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - M Hirata
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - T Hirano
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - K Nishio
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - L T Kim Do
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan. Faculty of Veterinary Science, Vietnam National University of Agriculture, Vietnam
| | - T V Nguyen
- Faculty of Veterinary Science, Vietnam National University of Agriculture, Vietnam
| | - M Nii
- Tokushima Prefectural Livestock Research Institute, Tokushima, Japan
| | - T Otoi
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan.
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Hirata M, Yano H, Taji T, Shirakata Y. Mesenteric vein thrombosis following impregnation via in vitro fertilization-embryo transfer. World J Gastrointest Surg 2017; 9:209-213. [PMID: 29109853 PMCID: PMC5661126 DOI: 10.4240/wjgs.v9.i10.209] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/07/2017] [Accepted: 09/05/2017] [Indexed: 02/06/2023] Open
Abstract
Pregnancy is an acquired hypercoagulable state. Most patients with thrombosis that develops during pregnancy present with deep vein leg thrombosis and/or pulmonary embolism, whereas the development of mesenteric vein thrombosis (MVT) in pregnant patients is rare. We report a case of MVT in a 34-year-old woman who had achieved pregnancy via in vitro fertilization-embryo transfer (IVF-ET). At 7 wk of gestation, the patient was referred to us due to abdominal pain accompanied by vomiting and hematochezia, and she was diagnosed with superior MVT. Following resection of the gangrenous portion of the small intestine, anticoagulation therapy with unfractionated heparin and thrombolysis therapy via a catheter placed in the superior mesenteric artery were performed, and the patient underwent an artificial abortion. Oral estrogen had been administered for hormone replacement as part of the IVF-ET procedure, and additional precipitating factors related to thrombosis were not found. Pregnancy itself, in addition to the administered estrogen, may have caused MVT in this case. We believe that MVT should be included in the differential diagnosis of a pregnant patient who presents with an acute abdomen.
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Affiliation(s)
- Masaaki Hirata
- Department of Surgery, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo 660-0892, Japan
| | - Hiroko Yano
- Department of Obstetrics and Gynecology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo 660-0892, Japan
| | - Tomoe Taji
- Department of Surgery, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo 660-0892, Japan
| | - Yoshiharu Shirakata
- Department of Surgery, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo 660-0892, Japan
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Yabumoto T, Yoshida F, Baba K, Hayakawa H, Hamanaka H, Hirata M, Mochizuki H. A novel method for behavioral assessments of the common marmoset, marmodetector, detects general natural movement and changes in motor behavior. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2640] [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: 10/18/2022]
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Kogame T, Nomura T, Kataoka T, Hirata M, Ueshima C, Matsui M, Kabashima K. Possible inducible skin-associated lymphoid tissue (iSALT)-like structures with CXCL13+
fibroblast-like cells in secondary syphilis. Br J Dermatol 2017; 177:1737-1739. [DOI: 10.1111/bjd.15349] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- T. Kogame
- Department of Dermatology; Kyoto University Graduate School of Medicine; 54 Shogoin Kawara-cho Sakyo Kyoto 606-8507 Japan
| | - T. Nomura
- Department of Dermatology; Kyoto University Graduate School of Medicine; 54 Shogoin Kawara-cho Sakyo Kyoto 606-8507 Japan
| | - T. Kataoka
- Department of Diagnostic Pathology; Kyoto University Hospital; Kyoto Japan
| | - M. Hirata
- Department of Diagnostic Pathology; Kyoto University Hospital; Kyoto Japan
| | - C. Ueshima
- Department of Diagnostic Pathology; Kyoto University Hospital; Kyoto Japan
| | - M. Matsui
- Ijinkai Takeda General Hospital; Kyoto Japan
| | - K. Kabashima
- Department of Dermatology; Kyoto University Graduate School of Medicine; 54 Shogoin Kawara-cho Sakyo Kyoto 606-8507 Japan
- Singapore Immunology Network (SIgN) and Institute of Medical Biology; Agency for Science, Technology and Research (A*STAR); Biopolis Singapore
- PRESTO; Japan Science and Technology Agency; Saitama Japan
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Imai T, Ichimura M, Nakashima Y, Sakamoto M, Katanuma I, Yoshikawa M, Kariya T, Hirata M, Kohagura J, Minami R, Numakura T, Ikezoe R, Oki K, Sakamoto K. GAMMA 10/PDX Project Status and Future. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-1t29] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Imai
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - M. Ichimura
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - Y. Nakashima
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - M. Sakamoto
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - I. Katanuma
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - M. Yoshikawa
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - T. Kariya
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - J. Kohagura
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - R. Minami
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - T. Numakura
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - R. Ikezoe
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - K. Oki
- Plasma Research Center, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - K. Sakamoto
- Japan Atomic Energy Research Institute(JAEA), Naka, Japan
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Kondoh T, Hayashi T, Kawano Y, Kusama Y, Sugie T, Hirata M, Miura Y. CO2Laser Collective Thomson Scattering Diagnostic of α-Particles in Burning Plasmas. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1314] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Kondoh
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - T. Hayashi
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - Y. Kawano
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - Y. Kusama
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - T. Sugie
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577, Japan
| | - Y. Miura
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
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Cho T, Higaki H, Hirata M, Hojo H, Ichimura M, Ishii K, Islam K, Itakura A, Katanuma I, Kohagura J, Nakashima Y, Numakura T, Saito T, Tatematsu Y, Yoshikawa M, Tokioka S, Yokoyama N, Miyake Y, Tomii Y, Kojima Y, Takemura Y, Imai T, Yoshida M, Sakamoto K, Pastukhov VP, Miyoshi S. Recent Progress in the GAMMA 10 Tandem Mirror. Fusion Science and Technology 2017. [DOI: 10.13182/fst05-a601] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Cho
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - H. Higaki
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Hirata
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - H. Hojo
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Ichimura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - K. Ishii
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - K. Islam
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - A. Itakura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - I. Katanuma
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - J. Kohagura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Nakashima
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Numakura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Saito
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Tatematsu
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshikawa
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - S. Tokioka
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - N. Yokoyama
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Miyake
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Tomii
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Kojima
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Takemura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Imai
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshida
- JAERI, Naka Fusion Research Establishment, Ibaraki, Japan
| | - K. Sakamoto
- JAERI, Naka Fusion Research Establishment, Ibaraki, Japan
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Nakashima Y, Sakamoto M, Takeda H, Ichimura K, Hosoi K, Oki K, Yoshikawa M, Nishino N, Matsuura H, Hirata M, Ichimura M, Kariya T, Katanuma I, Kohagura J, Minami R, Numakura T, Ikezoe R, Akabane Y, Kigure S, Nagatsuka Y, Takahashi S, Ueda H, Imai T. First Results and Future Research Plan of Divertor Simulation Experiments Using D-Module in the End-Cell of the GAMMA 10/PDX Tandem Mirror. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-a16881] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Nakashima
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - M. Sakamoto
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - H. Takeda
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - K. Ichimura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - K. Hosoi
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - K. Oki
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - M. Yoshikawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - N. Nishino
- Graduate school of Engineering, Hiroshima University, Hiroshima 739-8527, Japan
| | - H. Matsuura
- Radiation Research Center, Osaka Prefecture University, Osaka 599-8570, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - M. Ichimura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - T. Kariya
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - I. Katanuma
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - J. Kohagura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - R. Minami
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - T. Numakura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - R. Ikezoe
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - Y. Akabane
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - S. Kigure
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - Y. Nagatsuka
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - S. Takahashi
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - H. Ueda
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
| | - T. Imai
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 3005-8577, Japan
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Cho T, Higaki H, Hirata M, Hojo H, Ichimura M, Ishii K, Islam K, Itakura A, Katanuma I, Kohagura J, Minami R, Nakashima Y, Numakura T, Saito T, Tatematsu Y, Yoshikawa M, Watanabe O, Kubota Y, Kobayashi T, Yamaguchi Y, Saimaru H, Higashizono Y, Miyata Y, Kiminami S, Shimizu K, Itou M, Ikuno T, Mase A, Yasaka Y, Sakamoto K, Yoshida M, Kojima A, Ogura K, Nishino N, Horton W, Kariya T, Imai T, Pastukhov V, Miyoshi S. Overview of Recent Progress in the GAMMA 10 Tandem Mirror. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Cho
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - H. Higaki
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - H. Hojo
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - M. Ichimura
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - K. Ishii
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - K. Islam
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - A. Itakura
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - I. Katanuma
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - J. Kohagura
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - R. Minami
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Nakashima
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - T. Numakura
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - T. Saito
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Tatematsu
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - M. Yoshikawa
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - O. Watanabe
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Kubota
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - T. Kobayashi
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Yamaguchi
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - H. Saimaru
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Higashizono
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Miyata
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - S. Kiminami
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - K. Shimizu
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - M. Itou
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - T. Ikuno
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - A. Mase
- Art, Science and Technology Center for Cooperative Research, Kyushu University, Japan
| | - Y. Yasaka
- Department of Electrical and Electronics Engineering, Kobe University, Japan
| | - K. Sakamoto
- Naka Fusion Research Establishment, Japan Atomic Energy Agency, Japan
| | - M. Yoshida
- Naka Fusion Research Establishment, Japan Atomic Energy Agency, Japan
| | - A. Kojima
- Naka Fusion Research Establishment, Japan Atomic Energy Agency, Japan
| | - K. Ogura
- Graduate School of Science and Technology, Niigata University, Japan
| | - N. Nishino
- Graduated School of Engineering, Hiroshima University, Japan
| | - W. Horton
- Institute for Fusion Studies, The University of Texas at Austin, USA
| | - T. Kariya
- Toshiba Electron Tubes and Devices Co. Ltd., Tochigi, Japan
| | - T. Imai
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - V.P. Pastukhov
- Russian Research Center “Kurchatov Institute”, Moscow, Russia Kurchatov Institute, Russia
| | - S. Miyoshi
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
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R. I, Ichimura M, Sato T, Hirata M, Yokoyama T, Ugajin Y, Iimura T, Saito Y, Annaka Y, Shiratani A, Shima Y, Kohagura J, Yoshikawa M, Imai T. Time Evolving Stucture of Alfvén Ion-Cyclotron Waves in GAMMA 10. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-a16874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ikezoe R.
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Ichimura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Sato
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Yokoyama
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Ugajin
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Iimura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Saito
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Annaka
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - A. Shiratani
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Shima
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - J. Kohagura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshikawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Imai
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
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Aoyama S, Miyazawa Y, Ogura K, Sugawara A, Hirata M. Improved Performance of Oversized Backward Wave Oscillator Driven by Weakly Relativistic Electron Beam. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1390] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Aoyama
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Y. Miyazawa
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - K. Ogura
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - A. Sugawara
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
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Sato K, Sakamoto H, Hirata M, Kidokoro-Kobayashi M, Ozaki M, Higashi S, Murakami T. Relationship Among Establishment Durations, Kin Relatedness, Aggressiveness, and Distance Between Populations of Eight Invasive Argentine Ant (Hymenoptera: Formicidae) Supercolonies in Japan. J Econ Entomol 2017; 110:1676-1684. [PMID: 28531326 DOI: 10.1093/jee/tox141] [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] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Indexed: 06/07/2023]
Abstract
We investigated kin relatedness and kin-recognition abilities of the Argentine ant, Linepithema humile (Mayr), an invader from North America that has pervaded Japan for 20 yr, using genetic analyses and behavioral bioassays. From these data and interactions among factors, we formulated an eradication and management time-scale pattern diagram. Relatedness within a colony using microsatellite markers was effectively zero, whereas relatedness estimated by multilocus DNA fingerprinting markers was relatively high. Specifically, relatedness of recently invaded populations was estimated at nearly 0.3. From the results of behavioral bioassays on the invading populations of the Argentine ant, all colonies except the Kobe supercolonies did not show clearly aggressive behaviors toward workers belonging to other colonies, even when distantly located. Because they are critical factors for eradicating and managing invasive organisms, we assessed the relationships among kin relatedness using multilocus DNA fingerprinting and microsatellite markers, with aggressiveness, in 2011 and 2012, including the establishment durations, and distances among supercolonies. A generalized linear model (GLM) analysis, with establishment durations as an explanatory variable, strongly contributed to explaining estimated relatedness from the two methods. Specifically, models using kin relatedness for both multilocus DNA fingerprinting and microsatellite markers provided the strongest contribution to explaining the establishment durations. Within 3 yr after establishment in a native area, eradication is possible because of their low genetic diversity and small colony size. After 15 yr, eradication will be more difficult, but it is preferable to just monitor the impact for a nonnative ecosystem.
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Affiliation(s)
- K Sato
- Hokkaido University of Education, Hakodate, Hokkaido 040-8567, Japan
- Chiba Oihama High School, Chiba, Chiba 260-0823, Japan
| | - H Sakamoto
- Faculty of Agriculture, Ibaraki University, Ami, Ibaraki 300-0393, Japan
| | - M Hirata
- Sapporo Ohtani High School, Sapporo, Hokkaido 065-0016, Japan
| | | | - M Ozaki
- Kobe University, Kobe, Hyogo 657-8501, Japan
| | - S Higashi
- Hokkaido University, Sapporo, Hokkaido 060-0808, Japan
| | - T Murakami
- Hokkaido University of Education, Hakodate, Hokkaido 040-8567, Japan
- Kyushu University, Decision Science, 744 Motooka, Fukuoka 819-0315, Japan
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