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z~6 i-DROPOUT GALAXIES IN THE SUBARU /XMM-NEWTON DEEP FIELD
OTA KAZUAKI,KASHIKAWA NOBUNARI,NAKAJIMA TADASHI,IYE MASANORI The Korean Astronomical Society 2005 Journal of The Korean Astronomical Society Vol.38 No.2
We conducted an extremely wide field survey of z ${\~}$ 6 Lyman break galaxies (LBGs) to precisely derive their bright end surface density overcoming the bias due to cosmic variance. We selected out LBG candidates in the Subaru/ XMM-Newton Deep Survey Field (SXDS) over the total of ${\~}1.0\;deg^2$ sky area down to $z_{AB} = 26.0 ({\ge}3{\sigma},\;2'.0 aperture)$ using i' - z' > 1.5 color cut. This sample alone is likely to be contaminated by M/L/T dwarfs, low-z elliptical galaxies, and z ${\~}$ 6 quasars. To eliminate these interlopers, we estimated their numbers using an exponential disk star count model, catalogs of old ellipticals in the SXDS and other field, and a z${\~}$6 quasar luminosity function. The finally derived surface density of z ${\~}$ 6 LBGs was 165 $mag^{-1}\;deg^{-2}$ down to $z_{AB}$ = 26.0 and shows good agreement with previous results from the narrower field survey of HST GOODS.
Moito Iijima,Noriyuki Okonogi,Nakako Izumi Nakajima,Yukie Morokoshi,Hiroaki Kanda,Taiju Yamada,Yusuke Kobayashi,Kouji Banno,Masaru Wakatsuki,Shigeru Yamada,Tadashi Kamada,Daisuke Aoki,Sumitaka Hasegaw 대한부인종양학회 2020 Journal of Gynecologic Oncology Vol.31 No.2
Objective: Programmed cell death-ligand 1 (PD-L1) is expressed in tumor cells and has been shown to predict clinical outcomes of several types of malignancies. The aim of this study was to investigate the effects of carbon-ion (C-ion) beam irradiation on PD-L1 expression in human uterine cervical adeno/adenosquamous carcinoma (UCAA) cells and clinical samples and to identify the prognostic factors for outcomes after C-ion radiotherapy (CIRT). Methods: The effects of C-ion irradiation on PD-L1 expression in human UCAA and cervical squamous cell carcinoma cells were examined by flow cytometry. We examined PD-L1 expression in UCAA biopsy specimens from 33 patients before CIRT started (pre-CIRT) and after 12 Gy (relative biological effectiveness [RBE]) irradiation (post-12Gy-C) in 4 fractions of CIRT to investigate the correlation between PD-L1 status and clinical outcomes. Results: The PD-L1 expression was upregulated by C-ion beam in a dose-dependent manner in HeLa and SiHa cells through phosphorylated Chk1. The overall frequencies of pre-CIRT and post-12Gy-C PD-L1 positivity were 45% (15/33) and 67% (22/33), respectively. The post-12Gy-C PD-L1 expression was significantly elevated compared to the pre-CIRT PD-L1 expression. There was no significant relationship between the pre-CIRT PD-L1 status and clinical outcomes, such as local control (LC), progression-free survival (PFS), and overall survival (OS). However, the post-12Gy-C PD-L1 expression had better correlation with PFS, but not with LC and OS. Conclusion: CIRT can induce PD-L1 expression in UCAA and we propose that PD-L1 expression after starting CIRT may become as a predictive prognostic marker in CIRT for UCAA.
Laparoscopic and Robotic Liver Resection Using Advanced 3D Liver Simulation Software
( Atsushi Sugioka ),( Yutaro Kato ),( Yoshinao Tanahashi ),( Tadashi Kagawa ),( Masayuki Kojima ),( Sanae Nakajima ),( Syo-ichiro Tsuji ),( Ichiro Uyama ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Background: Minimally invasive liver resection including laparoscopic and robotic liver resection is a rapidly developing field withthe greatest potential. However, the spatial disorientation is one of the biggest issues that would increase the risk of dangerousbleeding and bile leakage. To overcome this issue, it is of crucial importance to standardize anatomical liver resection with extrahepaticGlissonean pedicle-first approach and to use advanced 3D liver simulation software that can visualize the Glissoneansystem.Methods: We proposed a novel concept of liver anatomy based on Laennec’s capsule that can standardize the extrahepaticGlissonean pedicle approach. Whereas Synapse 3D® is the first simulation software to use face recognition technology for clinical3D simulation and visualization of the Glissonean system are available since version 4.4.Results: Owing to the novel concept of liver anatomy, anatomical liver resection with extrahepatic Glissonean pedicle-first approachwas standardized and target area was well recognized prior to parenchymal dissection with minimal bleeding and bileleakage from the resecting plane. Preoperative 3D simulation and intraoperative navigation contributed to perform systematicanatomical liver resection without spatial disorientation even for the cases with anatomical abnormalities such as right-sidedligamentum teres.Conclusion: Minimally invasive liver resection including laparoscopic and robotic resection became safe and curable procedureswith the novel concept of liver anatomy and advanced 3D liver simulation.