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Cortical Thickness Reduction in Individuals at Ultra-High-Risk for Psychosis
Jung, Wi Hoon,Kim, June Sic,Jang, Joon Hwan,Choi, Jung-Seok,Jung, Myung Hun,Park, Ji-Young,Han, Ji Yeon,Choi, Chi-Hoon,Kang, Do-Hyung,Chung, Chun Kee,Kwon, Jun Soo Oxford University Press 2011 Schizophrenia bulletin Vol.37 No.4
Lee Jung Su,Lee Jeong Hoon,Kim Jinyoung,Na Hee Kyong,Ahn Ji Yong,Jung Kee Wook,Kim Do Hoon,Choi Kee Don,Song Ho June,Lee Gin Hyug,Jung Hwoon-Yong 대한의학회 2021 Journal of Korean medical science Vol.36 No.14
Background: Endoscopic surveillance after total gastrectomy (TG) for gastric cancer is routinely performed to detect tumor recurrence and postoperative adverse events. However, the reports on the clinical benefits of endoscopic surveillance are ambiguous. We investigated the clinical benefit of endoscopic surveillance after TG for gastric cancer. Methods: We analyzed 848 patients who underwent TG with R0 resection for gastric cancer between 2011 and 2012 (380 early gastric cancer and 468 advanced gastric cancer) and underwent regular postoperative surveillance with endoscopy and abdominopelvic computed tomography (CT) with contrast. Results: Median follow-up periods were 58 months for both endoscopy (range, 3–96) and abdominopelvic CT (range, 1–96). Tumor recurrence occurred in 167 patients (19.7%), of whom seven (4.2%) were locoregional recurrences in the peri-anastomotic area (n = 5) or regional gastric lymph nodes (n = 2). Whereas the peri-anastomotic recurrences were detected by both endoscopy and abdominopelvic CT, regional lymph node recurrences were only detected by abdominopelvic CT. Out of the 23 events of postoperative adverse events, the majority (87%) were detected by radiologic examinations; three events of benign strictures in the anastomotic site were detected only by endoscopy. Conclusion: Endoscopic surveillance did not have a significant role in detecting locoregional tumor recurrence and postoperative adverse events after TG with R0 resection for gastric cancer. Routine endoscopic surveillance after TG may be considered optional and performed according to the capacities of each clinical setting.
( You Jung Shin ),( Jin Hoon Chung ),( Do Jin Kim ),( Hyun Mee Ryu ),( Moon Young Kim ),( Jung Yeol Han ),( June Seek Choi ) 대한산부인과학회 2016 Obstetrics & Gynecology Science Vol.59 No.6
Objective To validate quantitative fluorescent polymerase chain reaction (QF-PCR) via chorionic villus sampling (CVS) for the diagnosis of fetal aneuploidies. Methods We retrospectively reviewed the medical records of consecutive pregnant women who had undergone CVS at Cheil General Hospital between December 2009 and June 2014. Only cases with reported QF-PCR before long-term culture (LTC) for conventional cytogenetic analysis were included, and the results of these two methods were compared. Results A total of 383 pregnant women underwent QF-PCR and LTC via CVS during the study period and 403 CVS specimens were collected. The indications of CVS were as follows: abnormal first-trimester ultrasonographic findings, including increased fetal nuchal translucency (85.1%), advanced maternal age (6.8%), previous history of fetal anomalies (4.2%), and positive dual test results for trisomy 21 (3.9%). The results of QF-PCR via CVS were as follows: 76 (18.9%) cases were identified as trisomy 21 (36 cases), 18 (33 cases), or 13 (seven cases), and 4 (1.0%) cases were suspected to be mosaicism. All results of common autosomal trisomies by QF-PCR were consistent with those of LTC and there were no false-positive findings. Four cases suspected as mosaicism in QF-PCR were confirmed as non-mosaic trisomies of trisomy 21 (one case) or trisomy 18 (three cases) in LTC. Conclusion QF-PCR via CVS has the advantage of rapid prenatal screening at an earlier stage of pregnancy for common chromosomal trisomies and thus can reduce the anxiety of parents. In particular, it can be helpful for pregnant women with increased fetal nuchal translucency or abnormal first-trimester ultrasonographic findings.
New Diagnostic Criteria for Nutcracker Esophagus Using Standard Manometry
정기욱 ( Kee Wook Jung ),( Hwoon Yong Jung ),( In Ja Yoon ),( Do Hoon Kim ),( Soon Man Yoon ),( Mi Young Do ),( Jun Won Chung ),( Hyung Chul Oh ),( Kwi Sook Choi ),( Kee Don Choi ),( Ho June Song ),( Gin 대한소화기학회 2007 대한소화기학회 추계학술대회 Vol.2007 No.-
Endoscopic and Oncologic Outcomes of Endoscopic Resection for Superficial Esophageal Neoplasm
( Do Hoon Kim ),( Hwoon Yong Jung ),( Eun Jeong Gong ),( Ji Young Choi ),( Ji Yong Ahn ),( Mi Young Kim ),( Kwi Sook Choi ),( Jeong Hoon Lee ),( Kee Don Choi ),( Ho June Song ),( Gin Hyug Lee ),( Jin 대한소화기학회 2015 Gut and Liver Vol.9 No.4
Background/Aims: Endoscopic resection (ER) of superficial esophageal neoplasm (SEN) is a technically difficult procedure. We investigated the clinical outcomes of ER for SEN to determine its feasibility and effectiveness. Methods: Subjects who underwent ER for SEN at Asan Medical Center between December 1996 and December 2010 were eligible. The clinical features of patients and tumors, histopathological characteristics, adverse events, ER results and survival were investigated. Results: A total of 129 patients underwent ER for 147 SENs. En bloc resection (EnR) was performed in 118 lesions (80.3%). Complete resection (CR) was accomplished in 128 lesions (86.5%), and curative resection (CuR) was performed in 118 lesions (79.7%). The EnR, CR, and CuR rates were significantly greater in the endoscopic submucosal dissection group when compared to those in the endoscopic resection group. Adverse events occurred in 22 patients (17.1%), including bleeding (n=2, 1.6%), perforation (n=12, 9.3%), and stricture (n=8, 6.2%). Local tumor recurrence occurred in 2.0% of patients during a median follow-up of 34.8 months. The 5-year overall and disease-specific survival rates were 94.0% and 97.5%, respectively. Conclusions: ER is a feasible and effective method for the treatment of SEN as indicated by favorable clinical outcomes. (Gut Liver 2015;9:470-477)
( Jung Gil Park ),( Won Young Tak ),( Soo Young Park ),( Young Oh Kweon ),( Se Young Jang ),( Yu Rim Lee ),( Si Hyun Bae ),( Do Young Kim ),( June Sung Lee ),( Ki Tae Suk ),( In Hee Kim ),( Heon Ju Le 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: To evaluate potential benefits of long-term oral branched amino acids (BCAAs) supplements in advanced liver disease Methods: Liver cirrhosis patients with Child-Pugh (CP) score from 8 to 10 were prospectively recruited from 13 medical centers. The patients supplemented with 12.45g of daily BCAAs over 6 months or regular diet were assigned to either BCAA group or control group, respectively. We evaluated the effect of BCAAs therapy on the model for end-stage liver disease (MELD) score, CP score, serum albumin, serum bilirubin, incidence of cirrhosis-related events, and event-free survival over 96 months. Results: A total of 124 patients was enrolled (n=63 in the BCAA group and n=61 in the control group). Baseline characteristics of the patients including age, sex, CP score, and MELD score were not significant different between two groups. The MELD score (P=0.009) and CP score (P=0.011) were significantly improved in the BCAA group compared to the control group over time. However, serum albumin and bilirubin levels in the BCAA group failed to improve over study period. Cumulative event-free survival in the BCAA group was significantly better than that in the control group (HR=0.389, 95% CI 0.221-0.684, P=0.001). Conclusions: Long-term supplements of BCAAs could potentially improve liver function and delay the liver related complications in patients with advanced liver disease.
( June-young Chung ),( Bumhee Lee ),( In-kyung Park ),( Hyun Ho Park ),( Heon Seob Jung ),( Joon Chul Park ),( Hyun Chul Cho ),( Jae-do Nam ) 한국고무학회 2020 엘라스토머 및 콤포지트 Vol.55 No.1
Herein, we investigated the thermal conductivity and thermal stability of natural rubber composite systems containing hybrid fillers of boron nitride (BN) and aluminum nitride (AlN). In the hybrid system, the bimodal distribution of polygonal AlN and planar BN particles provided excellent filler-packing efficiency and desired energy path for phonon transfer, resulting in high thermal conductivity of 1.29 W/mK, which could not be achieved by single filler composites. Further, polyethylene glycol (PEG) was compounded with a commonly used naphthenic oil, which substantially increased thermal conductivity to 3.51 W/mK with an excellent thermal stability due to facilitated energy transfer across the filler-filler interface. The resulting PEG-incorporated hybrid composite showed a high thermal degradation temperature (T<sub>2</sub>) of 290℃, a low coefficient of thermal expansion of 26.4 ppm/℃, and a low thermal distortion parameter of 7.53 m/K, which is well over the naphthenic oil compound. Finally, using the Fourier's law of conduction, we suggested a modeling methodology to evaluate the cooling performance in thermal management system.
Jung, Ku-Hyun,Kim, Do-Hyoung,Kim, Hee-June,Park, Seong-Hyun,Jhang, Kyung-Young,Kim, Hak-Sung Elsevier 2017 Composite structures Vol.160 No.-
<P><B>Abstract</B></P> <P>In this study, a low-velocity impact test of glass fiber-reinforced polypropylene (GFPP) composites was simulated considering interlaminar fracture toughness. In the simulation, intralaminar and interlaminar damage were modeled using the continuum damage mechanics (CDM) and cohesive zone method (CZM) models, respectively. The B-K criterion was used for the interlaminar damage model along with experimental results, which were obtained from fracture toughness tests of modes I and II and the mixed mode. Low-velocity impact tests were performed to verify the developed damage model, and various characteristics such as delamination and the force–displacement were evaluated. Finally, it was found that the developed damage model with interlaminar fracture toughness can be used to accurately predict the impact behavior of GF/PP composites, including interlaminar delamination.</P>