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Assessment of incidental focal colorectal uptake by analysis of fluorine-18 fluorodeoxyglucose positron emission tomography parameters

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World Journal of Clinical Cases 2022年第17期10卷 5634-5645页

作者： Haejun Lee Kyung-Hoon Hwang kwang an kwon Department of Nuclear Medicine Gachon University College of MedicineGil Medical CenterIncheon 21565South Korea Department of Gastroenterology Gachon University College of MedicineGil Medical CenterIncheon 21565South Korea

BACKGROUND Colon and rectal cancers are among the top five cancers worldwide in terms of their incidence and mortality *** the treatment options for cure include surgery even in specific advanced-stage cases,the early detection of lesions is important for applying active treatment ***-18 fluorodeoxyglucose(F-18 FDG)positron emission tomography/computed tomography(PET/CT)is an established imaging study for many types of cancers;however,physiologic uptake in the gastrointestinal tract is a frequent finding and may interfere with lesion ***,as unexpectedly observed focal colorectal F-18 FDG uptake may harbor malignant lesions,further examination must not be *** To assess the clinical implications of unexpected focal colorectal F-18 FDG uptake by analyzing FDG PET *** A total of 15143 F-18 FDG PET/CT scans performed at our hospital between January 2016 and September 2021 were retrospectively reviewed to identify incidentally observed focal colorectal FDG ***,83 regions showing focal colorectal FDG uptake with final histopathological reports from 80 patients(45 men and 35 women with mean ages of 66.9±10.7 years and 63.7±15.3 years,respectively)were eligible for inclusion in the present *** focal hypermetabolic colorectal region was classified as malignant,premalignant,or benign according to the histopathological *** parameters such as maximum and peak standardized uptake value(SUVmax and SUVpeak),metabolic tumor volume(MTV),mean SUV of the metabolic tumor volume(mSUVmtv),and total lesion glycolysis(TLG)were measured or calculated for the corresponding hypermetabolic *** and nonparametric statistical comparisons of these parameters were performed among the three *** operating characteristic curves were plotted to identify cut-off *** The detection rate of incidental focal colorectal uptake was 0.53%(80/15,143).Of the 83 regions with unexpected fo

关键词： Colorectal Incidental Fluorine-18 fluorodeoxyglucose Positron emission tomography/computed tomography Standardized uptake value

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Etching characteristics of thin SiON films using a liquefied perfluorocarbon precursor of C_6F_(12)O with a low global warming potential

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Plasma Science and Technology 2020年第10期22卷 135-144页

作者： Junmyung LEE Yunho NAM Jongchan LEE Hyun Woo LEE kwang-Ho kwon Department of Control and Instrumentation Engineering Korea UniversitySejong 30019Republic of Korea Department of Aeronautic Computer Engineering Hanseo UniversitySeosan 31962Republic of Korea

Perfluorocarbon gas is widely used in the semiconductor ***,perfluorocarbon has a negative effect on the global environment owing to its high global warming potential(GWP) *** alternative solution is ***,we evaluated the possibility of replacing conventional perfluorocarbon etching gases such as CHF_3 with C_6F_(12)O,which has a low GWP and is in a liquid state at room *** this study,silicon oxynitride(SiON) films were plasma-etched using inductively coupled CF4+C_6F_(12)O+O_2 mixed ***,the etching characteristics of the film,such as etching rate,etching profile,selectivity over Si,and photoresist,were investigated.A double Langmuir probe was used and optical emission spectroscopy was performed for plasma *** addition,a contact angle goniometer and x-ray photoelectron spectroscope were used to confirm the change in the surface properties of the etched SiON film ***,the etching characteristics of the C_6F_(12)O mixed plasma exhibited a lower etching rate,higher SiON/Si selectivity,lower plasma damage,and more vertical etched profiles than the conventional CHF_3 mixed *** addition,the C_6F_(12)O gas can be recovered in the liquid state,thereby decreasing global *** results confirmed that the C_6F_(12)O precursor can sufficiently replace the conventional etching gas.

关键词： global warming potential perfluorocarbon silicon oxynitride etching characteristics liquid-state perfluorocarbon

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Clinical outcomes and safety of high-resolution manometry guided superficial partial circular muscle myotomy in per-oral endoscopic myotomy for Jackhammer esophagus: Two cases report

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World Journal of Clinical Cases 2019年第16期7卷 2322-2329页

作者： Youn I Choi Kyoung Oh Kim Dong Kyun Park Jun-Won Chung Yoon Jae Kim kwang an kwon Department of Gastroenterology Gil Medical Center Gachon University

BACKGROUND Jack hammer esophagus is a relatively rare disease and to date,there is no dramatic treatment ***,conventional per-oral endoscopic myotomy (POEM) have expanded their area into Jackhammer ***,several complications such as post procedure motility disorders (e.g.,passage disturbance) are issues after *** overcome these issues,we here introduced high-resolution manometry (HRM)-guided superficial partial circular muscle myotomy,which involves cutting only the superficial layer of the esophageal circular *** SUMMARY We report two cases of patients with Jackhammer esophagus who were treated with HRM-guided extremely superficial partial circular muscle myotomy during *** 1 was a 53-year-old female with medication-refractory odynophagia and case 2 was a 47-year-old man who presented with chest *** were diagnosed with Jackhammer esophagus using HRM,and the hypercontractile segments of the esophagus were ***-guided extremely superficial partial circular muscle myotomy was performed while preserving the lower esophageal ***,the circular and longitudinal muscle layers are preserved but hypercontractile movements are reduced,even after ***’ clinical symptoms dramatically improved right after POEM,and 6-mo follow-up HRM revealed completely resolved *** a 1-year follow-up period,patients were still in good health and remained symptom *** HRM-guided superficial partial circular muscle myotomy may be a promising alternative to conventional POEM for treating Jackhammer esophagus with improved efficacy.

关键词： Jackhammer esophagus Hypercontractile Partial circular muscle myotomy Case report

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Tailored eradication vs empirical bismuth-containing quadruple therapy for first-line Helicobacter pylori eradication: A comparative,open trial

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World Journal of Gastroenterology 2019年第46期25卷 6743-6751页

作者： Youn I Choi Jun Won Chung Dong Kyun Park Kyoung Oh Kim kwang an kwon Yoon Jae Kim Ja Young Seo Department of Gastroenterology Gil Medical CenterGachon UniversityIncheon 21565South Korea Department of Laboratory Medicine Gil Medical CenterGachon UniversityIncheon 21565South Korea

BACKGROUND Few studies have compared the efficacy and safety profile of a tailored eradication(TR)strategy based on the presence of a 23S ribosomal RNA point mutation with those of empirical bismuth-based quadruple therapy(EBQT)for first-line eradication of Helicobacter pylori(***)in Korean *** To compare the efficacy and safety of a TR strategy and those of EBQT regimen as first-line eradication therapy for *** This is an open-label,comparative study in which we prospectively enrolled patients over 18 years of age with *** infection and retrospectively reviewed their ***-positive patients diagnosed by rapid urease test,Giemsa staining,or dual priming oligonucleotide polymerase chain reaction(DPO-PCR)were enrolled from May 2016 to September 2018 at Gil Medical *** with *** infection received either a TR regimen or the EBQT *** the tailored therapy group that underwent DPO-PCR testing,patients with A2142G and/or A2143G point mutations were treated with a bismuth-containing quadruple *** eradication rate,patient-reported side effect rate,and *** eradication success rate were evaluated and compared between the *** A total of 150 patients were assigned to the TR(n=50)or EBQT group(n=100).The first-line eradication rate of *** did not differ between the groups(96.0%vs 95.7%,P=0.9).The rate of eradication-related side effects for TR was 12.0%,which differed significantly from that of EBQT(43.0%)for first-line treatment(P<0.001).CONCLUSION DPO-PCR-based TR for *** eradication may be equally efficacious,with less treatment-related complications,compared to EBQT in Korea,where clarithromycin resistance is high.

关键词： Helicobacter pylori Eradication Tailored Empirical Quadruple

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Tailored eradication strategy vs concomitant therapy for Helicobacter pylori eradication treatment in Korean patients

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World Journal of Gastroenterology 2021年第31期27卷 5247-5258页

作者： Youn I Choi Jun-Won Chung Kyoung Oh Kim kwang an kwon Yoon Jae Kim Jung Ho Kim Ja Young Seo Dong Kyun Park Division of Internal Medicine Department of GastroenterologyGachon University College of MedicineGil Medical CenterInchoen 21565South Korea Department of Laboratory Medicine Gil Medical CenterGachon UniversityInchoen 21565South Korea Health IT Research Center Gachon University Gil HospitalIncheon 21565South Korea

BACKGROUND Antibiotic resistance to Helicobacter pylori(***)infection,which ultimately results in eradication failure,has been an emerging issue in the clinical ***,to overcome this problem,an antibiotic sensitivity-based tailored therapy(TT)for *** infection has received *** To investigate the efficacy and safety profiles of TT for *** infection treatment compared to a non-bismuth quadruple therapy,concomitant therapy(CT)*** We included patients(>18 years)with an *** infection and without a history of Helicobacter eradication who visited the Gil Medical Center between March 2016 and October *** being randomly assigned to either the TT or CT treatment group in 1 to 1 manner,patient compliance,eradication success rate(ESR),and patient-reported side effects profiles were assessed and compared between the two *** infection was diagnosed using a rapid urease test,Giemsa stain,or dual priming oligonucleotide polymerase chain reaction(DPO-PCR).Tailored eradication strategy based through the presence of a 23S ribosomal RNA point *** the TT group,a DPO-PCR test,which detected A2142G and/or A2143G point mutations,and a clarithromycin resistance test were *** in the clarithromycin-resistant group were treated with a bismuth-containing quadruple combination therapy,while those with sensitive results were treated with the standard triple *** Of the 217 patients with a treatment naive *** infection,110 patients[mean age:58.66±13.03,men,n=55(50%)]were treated with TT,and 107 patients[mean age:56.67±10.88,men,n=52(48.60%)]were treated with *** compliance(TT vs CT,100%vs 98.13%,P=0.30),and follow-up loss rates(8.18%vs 9.35%,P=0.95)were not significantly different between the *** ESR after treatment was also not statistically different between the groups(TT vs CT,82.73%vs 82.24%,P=0.95).However,the treatment-related and patient-reported side effects were signifi

关键词： Helicobacter pylori Eradication Tailored therapy Conco-mitant therapy regimen

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Adult intussusception caused by colonic anisakis: A case report

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World Journal of Clinical Cases 2019年第17期7卷 2536-2541页

作者： Youn I Choi Dong Kyun Park Hyun Yee Cho Seung Joon Choi Jun-Won Chung Kyung Oh Kim kwang an kwon Yoon Jae Kim Department of Gastroenterology Gachon UniversityGil Medical CenterIncheon 21565South Korea Department of Pathology Gachon University Gil Medical CenterIncheon 21565South Korea

BACKGROUND Colo-colonic intussusception is an uncommon phenomenon in an *** intussusception accounts for < 5% of total cases,and the colo-colonic type is < 30% of *** surgical management has been the treatment of choice for intestinal intussusception in adults,because most frequent causes for adult intussusception are malignant in origin,the importance of the roles of preoperative colonoscopic evaluation has recently been *** SUMMARY We report an extremely rare case of adult colo-colonic intussusception caused by colonic anisakiasis and successfully treated by endoscopic removal of the Anisakis body.A 59-year-old man visited the emergency department due to 1 day of lower abdominal colicky *** computed tomography (APCT) revealed the presence of mid-transverse colon intussusception without definite necrosis,which was possibly related with colorectal *** there was no evidence of necrosis at the intussusception site,a colonoscopy was performed to target the colonic lesion and obtain tissue for a histopathological *** Anisakis body was found when inspecting the suspicious colonic lesion recorded by *** Anisakis body was removed with forceps assisted by *** patient’s symptoms improved dramatically after removing the Anisakis.A reduced colon without any pathological findings was seen on the follow-up *** any further treatment,the patient was discharged 5 d after the *** When colonic intussusception without necrosis occurs in an adult,physician should consider a colonoscopy to exclude causes cured by endoscopy.

关键词： Intussusception Anisakis Colonoscopy Case report

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Utilization of biomarkers for the prognostic prediction of cardiac arrest survivors using a multi-modal approach

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World Journal of Emergency Medicine 2024年第2期15卷 131-134页

作者： Changshin Kang Yeonho You Jung Soo Park Byeong kwon Park Jae kwang Lee Byung Kook Lee Department of Emergency Medicine College of MedicineChungnam National UniversityDaejeon 35015Republic of Korea Department of Emergency Medicine Chungnam National University HospitalDaejoen 35015Republic of Korea Department of Emergency Medicine Konyang University HospitalCollege of MedicineDaejeon 35015Republic of Korea Department of Emergency Medicine Chonnam National University Medical SchoolChonnam National University HospitalGwangju 61469Republic of Korea

International guidelines for post-cardiac arrest care recommend using multi-modal strategies to avoid the withdrawal of life-sustaining therapy(WLST)in patients with the potential for neurological recovery.[1]However,a clear methodology for multi-modal approaches has yet to be ***-specific enolase(NSE)is currently the only recommended biomarker,and the European Resuscitation Council(ERC)and the European SocietyofIntensiveCareMedicine(ESICM)have proposed a cutoff value of 60μg/L at 48 and/or 72 h after the return of spontaneous circulation(ROSC)as a multimodal prognostic tool for predicting poor neurological outcomes.

关键词： cardiac modal return

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LDHA Desuccinylase Sirtuin 5 as A Novel Cancer Metastatic Stimulator in Aggressive Prostate Cancer

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Genomics, Proteomics & Bioinformatics 2023年第1期21卷 177-189页

作者： Oh kwang kwon In Hyuk Bang So Young Choi Ju Mi Jeon Ann-Yae Na Yan Gao Sam Seok Cho Sung Hwan Ki Youngshik Choe Jun Nyung Lee Yun-Sok Ha Eun Ju Bae Tae Gyun kwon Byung-Hyun Park Sangkyu Lee BK21 Plus KNU Multi-Omics Based Creative Drug Research Team College of PharmacyResearch Institute of Pharmaceutical SciencesKyungpook National UniversityDaegu 41566Republic of Korea Department of Biochemistry and Molecular Biology Chonbuk National University Medical SchoolJeonjuJeonbuk 54896Republic of Korea College of Pharmacy Chosun UniversityGwangju 61452Republic of Korea Korea Brain Research Institute Daegu 41068Republic of Korea Department of Urology School of MedicineKyungpook National UniversityDaegu 41566Republic of Korea Department of Urology Kyungpook National University HospitalDaegu 41566Republic of Korea College of Pharmacy Chonbuk UniversityJeonjuJeonbuk 54896Republic of Korea School of Pharmacy Sungkyunkwan UniversitySuwon 16419Republic of Korea

Prostate cancer(PCa)is the most commonly diagnosed genital cancer in men *** 80%of the patients who developed advanced PCa suffered from bone metastasis,with a sharp drop in the survival *** great efforts,the detailed mechanisms underlying castration-resistant PCa(CRPC)remain *** 5(SIRT5),an NAD+-dependent desuccinylase,is hypothesized to be a key regulator of various ***,compared to other SIRTs,the role of SIRT5 in cancer has not been extensively ***,we revealed significantly decreased SIRT5 levels in aggressive PCa cells relative to the PCa *** correlation between the decrease in the SIRT5 level and the patient’s reduced survival rate was also *** quantitative global succinylome analysis,we characterized a significant increase in the succinylation at lysine 118(K118su)of lactate dehydrogenase A(LDHA),which plays a role in increasing LDH *** a substrate of SIRT5,LDHA-K118su significantly increased the migration and invasion of PCa cells and LDH activity in PCa *** study reveals the reduction of SIRT5 protein expression and LDHA-K118su as a novel mechanism involved in PCa progression,which could serve as a new target to prevent CPRC progression for PCa treatment.

关键词： Sirtuin 5 Lactate dehydrogenase A Lysine succinylation PCa progression

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Endoscopic stenting for recurrence-related colorectal anastomotic site obstruction:Preliminary experience

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World Journal of Gastroenterology 2014年第38期20卷 13936-13941页

作者： Jung Ho Kim Jong Joon Lee Jae Hee Cho Kyoung Oh Kim Jun-Won Chung Yoon Jae Kim kwang an kwon Dong Kyun Park Ju Hyun Kim Department of Internal Medicine Gachon University Gil Medical Center

AIM: To evaluate the efficacy of stents in treating patients with anastomotic site obstructions due to cancer recurrence following colorectal surgery.

关键词： Colorectal neoplasms Endoscopy Intestinal obstruction Stents Surgical anastomosis

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Anti-inflammatory and anti-apoptotic effects of rosuvastatin by regulation of oxidative stress in a dextran sulfate sodium-induced colitis model

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World Journal of Gastroenterology 2017年第25期23卷 4559-4568页

作者： Seung Kak Shin Jae Hee Cho Eui Joo Kim Eun-Kyung Kim Dong Kyun Park kwang an kwon Jun-Won Chung Kyoung Oh Kim Yoon Jae Kim Division of Gastroenterology and Hepatology Department of Internal Medicine Gachon University Gil Medical Center

To evaluate the anti-inflammatory and anti-apoptotic effects of rosuvastatin by regulation of oxidative stress in a dextran sulfate sodium (DSS)-induced colitis model. METHODSAn acute colitis mouse model was induced by oral administration of 5% DSS in the drinking water for 7 d. In the treated group, rosuvastatin (0.3 mg/kg per day) was administered orally before and after DSS administration for 21 d. On day 21, mice were sacrificed and the colons were removed for macroscopic examination, histology, and Western blot analysis. In the in vitro study, IEC-6 cells were stimulated with 50 ng/mL tumor necrosis factor (TNF)-α and then treated with or without rosuvastatin (2 μmol/L). The levels of reactive oxygen species (ROS), inflammatory mediators, and apoptotic markers were measured. RESULTSIn DSS-induced colitis mice, rosuvastatin treatment significantly reduced the disease activity index and histological damage score compared to untreated mice (P < 0.05). Rosuvastatin also attenuated the DSS-induced increase of 8-hydroxy-2’-deoxyguanosine and NADPH oxidase-1 expression in colon tissue. Multiplex ELISA analysis revealed that rosuvastatin treatment reduced the DSS-induced increase of serum IL-2, IL-4, IL-5, IL-6, IL-12 and IL-17, and G-CSF levels. The increased levels of cleaved caspase-3, caspase-7, and poly (ADP-ribose) polymerase in the DSS group were attenuated by rosuvastatin treatment. In vitro, rosuvastatin significantly reduced the production of ROS, inflammatory mediators and apoptotic markers in TNF-α-treated IEC-6 cells (P < 0.05). CONCLUSIONRosuvastatin had the antioxidant, anti-inflammatory and anti-apoptotic effects in DSS-induced colitis model. Therefore, it might be a candidate anti-inflammatory drug in patients with inflammatory bowel disease.

关键词： Oxidative stress Inflammatory bowel disease Rosuvastatin Apoptosis

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