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Effect of dietary vitamin C on gastric cancer risk in the Korean population

World Journal of Gastroenterology 2016年第27期22卷 6257-6267页

作者： Bach Viet Hoang Jeonghee Lee Il Ju Choi young-woo kim Keun Won Ryu Jeongseon kim Department of Cancer Control and Policy Graduate School of Cancer Science and Policy National Cancer Center Molecular Epidemiology Branch Research Institute National Cancer Center Center for Gastric Cancer National Cancer Center Hospital National Cancer Center

AIM: To investigate the effects of dietary vitamin C and foods containing vitamin C on gastric cancer ***: Our study included 830 control subjects and 415 patients. Data regarding demographics, medical history, and lifestyle, including dietary and nutrient intake, were collected using reliable selfadministered questionnaires. Dietary intake information was collected from the participants using a food frequency questionnaire that has been previously reported as reliable and valid. A rapid urease test and a histological evaluation were used to determine the presence of Helicobacter pylori(H. pylori) infection. Twenty-three vitamin C-contributing foods were selected, representing over 80% of the cumulative vitamin C contribution. RESULTS: In analyses adjusted for first-degree family history of gastric cancer, education level, job, household income, smoking status, and regular exercise, an inverseassociation between vitamin C intake and gastric cancer risk was observed for the highest(≥ 120.67 mg/d) vs the lowest(< 80.14 mg/d) intake category [OR(95%CI): 0.64(0.46-0.88)], with a significant trend across the three intake categories(P = 0.007). No protective effect of vitamin C was detected after stratification by gender. No effect of vitamin C intake on the gastric cancer incidence was found in either men or women infected with H. pylori. Vitamin C-contributing foods, including cabbage [0.45(0.32-0.63), 0.50(0.34-0.75), 0.45(0.25-0.81)], strawberries [0.56(0.40-0.78), 0.49(0.32-0.74), 0.52(0.29-0.93)], and bananas [0.40(0.29-0.57), 0.41(0.27-0.62), 0.34(0.19-0.63)], were protective factors against the risk of gastric cancer based on the results of the overall adjusted analyses and the results for men and women, ***: A protective effect of vitamin C and vitamin C-contributing foods against gastric cancer was observed. Further studies using larger sample sizes are required to replicate our results.

关键词： Vitamin C Vitamin C-contributing foods Helicobacter pylori Gastric cancer Korean population

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Recent updates and current issues of sentinel node navigation surgery for early gastric cancer

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Chinese Journal of Cancer Research 2021年第2期33卷 142-149页

作者： Sung Gon kim Bang wool Eom Hong Man Yoon Chan Gyoo kim Myeong-Cherl Kook young-woo kim Keun Won Ryu Center for Gastric Cancer Research Institute&HospitalNational Cancer CenterGoyang-si 410-769Republic of Korea

With the increase in the incidence of early gastric cancer(EGC),several endoscopic and laparoscopic approaches,such as endoscopic submucosal dissection and function-preserving gastrectomy,have been accepted as standard *** node navigation surgery(SNNS)is an ideal surgical option for preservation of most parts of the stomach and consequent maintenance of normal gastric function to improve quality of life in patients with *** many previous studies and clinical trials have demonstrated the safety and feasibility of the sentinel node concept in gastric cancer,the clinical application of SNNS is *** issues regarding technical standardization and oncological safety need to be *** several studies to resolve these problems are being actively performed,and SNNS might be an important surgical option in the treatment of gastric cancer in the future.

关键词： Sentinel node navigation surgery function-preserving surgery early gastric cancer SENORITA

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Gastric cancer surgery in South Korea: Past, present, and future

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Chinese Journal of Cancer Research 2023年第6期35卷 627-635页

作者： Sung Gon kim Sang Eok Lee Bang wool Eom Hong Man Yoon young-woo kim Keun Won Ryu Department of Surgery Konyang University HospitalDaejeon 35365Republic of Korea Center for Gastric Cancer Research Institute&HospitalNational Cancer CenterGoyang-si 410-769Republic of Korea

Gastric cancer remains a significant global health concern and its surgical management approaches have undergone significant changes in South Korea and worldwide. Subtotal or total gastrectomy with D2 lymph node dissection is well established as a standard surgical procedure for gastric cancer. With the active implementation of cancer screening in South Korea, the proportion of early gastric cancer cases has significantly increased over the past few decades, leading to a steady increase in the survival rate among patients. Furthermore, recent advances in surgical instruments and techniques have made minimally invasive surgery increasingly prevalent, not only for early but also for advanced gastric cancer. We aim to provide a comprehensive overview of the evolution and current status of gastric cancer surgery in South Korea.

关键词： Function-preserving surgery gastric cancer minimally invasive surgery surgery

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Laparoscopy-assisted pylorus-preserving gastrectomy for early gastric cancer: A retrospective study of long-term functional outcomes and quality of life

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World Journal of Gastroenterology 2019年第36期25卷 5494-5504页

作者： Bang wool Eom Boram Park Hong Man Yoon Keun Won Ryu young-woo kim Center for Gastric Cancer National Cancer Center Goyang 10408 South Korea Biostatistics Collaboration Team Research Core Research institute National Cancer Center Goyang 10408 South Korea

BACKGROUND Laparoscopy-assisted pylorus-preserving gastrectomy (LAPPG) was known to have benefits of function-preserving surgery compared to laparoscopy-assisted distal gastrectomy (LADG). However, in clinical settings, delayed gastric emptying and esophageal reflux following LAPPG can be serious issues, making surgeons reluctant to perform LAPPG. It is unclear that LAPPG had better longterm functional outcomes and quality of life compared to LADG. AIM To evaluate the long-term functional outcomes and patient-reported quality of life of LAPPG compared to those of LADG. METHODS We reviewed the clinicopathological data of 195 patients who underwent LADG with Billroth II anastomosis and 101 patients who underwent LAPPG for cT1N0 gastric cancer in the middle third of the stomach between 2012 and 2015. Postoperative complications, nutritional parameters, and survey results of the European Organization for Research and Treatment of Cancer Questionnaire C30 and STO22 questionnaire were compared between the two groups. RESULTS The serum hemoglobin level was significantly higher in the LAPPG group than in the LADG group (P < 0.001). In the endoscopic findings, incidence of bile reflux was lower (P < 0.001);however, the incidence of residual food was higher in the LAPPG group than in the LADG group (P < 0.001). Regarding the quality of life score, the LAPPG group had a better physical functioning score (86.7 vs 90.0, P = 0.032) but also greater pain and reflux when compared to the LADG group [8.3 vs 16.7 in pain, 11.1 (interquartile range, 0, 22.2) vs 11.1 (interquartile range, 11.1, 33.3) in reflux, P = 0.034 and 0.001, respectively]. CONCLUSION LAPPG is beneficial to recovery of anemia and to bile reflux, however, it might be unfavorable in terms of pain and reflux symptoms compared to LADG with Billroth II anastomosis.

关键词： Gastric cancer Pylorus-preserving gastrectomy Function Quality of life

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Current status and challenges in sentinel node navigation surgery for early gastric cancer

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Chinese Journal of Cancer Research 2017年第2期29卷 93-99页

作者： Bang wool Eom young-II kim Hong Man Yoon Soo-Jeong Cho Jong Yeul Lee Chan Gyookim Soo Jin kim Ji Yoon Rho Seok Ki kim Myeong-Cherl Kook young-woo kim Keun Won center for gastric cancer national cancer centerrepublic of korea center for diagnostic oncology national cancer centerrepublic of korea

Although a number of feasibility studies for sentinel node （SN） concepts in gastric cancer have been conducted since 2000, there remains a debate regarding detailed detection techniques and oncological safety. Two important multicenter phase II clinical trials were performed in Japan that used different methods and reached different conclusions; one confirmed acceptable results with a false-negative rate of 7%, and the other showed an unacceptably high false-negative rate of 46.4%. The Sentinel Node Oriented Tailored Approach （SENORITA） trial is a multicenter randomized controlled phase 1/I trial being performed in Korea. Patient enrollment is now complete and the long-term results are currently awaited. Recently, an image-guided SN mapping technique using infrared ray/fluorescence was introduced. This method might be a promising technology because it allows the clear visualization of SNs. With regard to the primary tumor, the non-exposed endoscopic wall-inversion surgery technique and non-exposure endolaparoscopic full-thickness resection with simple suturing technique have been reported. These methods prevent abdominal infection and tumor seeding and can be good alternatives to conventional laparoscopic gastric wedge resection. For indications, SN navigation surgery can be extended to patients who underwent non-curative endoscopic resection. Although a few studies have been performed on these patients, sentinel concepts may be beneficial to patients as they omit the need for additional gastrectomy. SN navigation surgery can lead to actual organ-preserving surgery and plays a key role in improving the quality of life of patients with early gastric cancer in the future.

关键词： Sentinel node navigation surgery early gastric cancer SENORITA

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Performance Analysis of Magnetic Nanoparticles during Targeted Drug Delivery:Application of OHAM

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Computer Modeling in Engineering & Sciences 2022年第2期130卷 723-749页

作者： Muhammad Zafar Muhammad Saif Ullah Tareq Manzoor Muddassir Ali Kashif Nazar Shaukat Iqbal HabibUllah Manzoor Rizwan Haider woo young kim Institute of Energy and Environmental Engineering University of the PunjabQuaid-e-Azam CampusLahore54590Pakistan Energy Research Centre COMSATS University IslamabadLahore54000Pakistan Department of Energy Engineering Faculty of Mechanical and Aeronautical EngineeringUniversity of Engineering and TechnologyTaxila47080Pakistan Department of Mathematics COMSATS University IslamabadLahore54000Pakistan School of Systems and Technology University of Management Sciences and TechnologyLahore54770Pakistan Department of Electrical Electronics and TelecommunicationEngineeringUniversity of Engineering and TechnologyLahore(FSD Campus)Faisalabad38000Pakistan Department of Electronic Engineering Faculty of Applied Energy SystemJeju National UniversityJeju Special Self-Governing ProvinceJeju-si63243Korea

In recent years,the emergence of nanotechnology experienced incredible development in the field of medical *** the past decade,investigating the characteristics of nanoparticles during fluid flow has been one of the intriguing *** distribution and uniformity have emerged as substantial criteria in both medical and engineering *** effects of chemotherapy on healthy tissues are known to be a significant concern during cancer therapy.A novel treatment method of magnetic drug targeting(MDT)has emerged as a promising topical cancer treatment along with some attractive advantages of improving efficacy,fewer side effects,and reduce drug *** magnetic drug targeting,the appropriate movement of nanoparticles(magnetic)as carriers is essential for the therapeutic process in the blood clot removal,infection treatment,and tumor cell *** this study,we have numerically investigated the behavior of an unsteady blood flowinfused with magnetic nanoparticles during MDT under the influence of a uniform external magnetic field in a *** optimal homotopy asymptotic method(OHAM)is employed to compute the governing equation for unsteady electromagnetohydrodynamics *** influence of Hartmann number(Ha),particle mass parameter(G),particle concentration parameter(R),and electro-osmotic parameter(k)is investigated on the velocity of magnetic nanoparticles and blood *** obtained show that the electro-osmotic parameter,along with Hartmann’s number,dramatically affects the velocity of magnetic nanoparticles,blood flow velocity,and flow ***,results also reveal that at a higher Hartman number,homogeneity in nanoparticles distribution improved *** particle concentration andmass parameters effectively influence the capturing effect on nanoparticles in the blood flow using a micro-tube for magnetic drug ***,investigation also indicates that the OHAM analysis is efficient and quick to h

关键词： Hartmann number magnetic nanoparticles nonlinear analysis targeted drug delivery optimal homotopy asymptotic method(OHAM)

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Factors associated with metastasis in superior mesenteric vein lymph node in subtotal gastrectomy for gastric cancer:Retrospective case control study

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Chinese Journal of Cancer Research 2020年第1期32卷 43-50页

作者： Won Ho Han Jungnam Joo Bang wool Eom Keun Won Ryu young-woo kim Myeong-cherl Kook Hong Man Yoon Center for Gastric Cancer Research Institute&HospitalNational Cancer CenterGoyang-si 410-769Republic of Korea Division of Cancer Epidemiology and Prevention National Cancer CenterGoyang-si 410-769Republic of Korea

Objective: The revised Japanese treatment guideline for gastric cancer recommends dissection of the superior mesenteric vein lymph node(No. 14v LN) if there is metastasis in infrapyloric lymph node(No. 6 LN). However,it is still controversial whether LN dissection is necessary. The aim of this study was to investigate the factors associated with metastasis in No. 14v ***: Patients who underwent D2 lymphadenectomy between 2003 and 2010 were included. We excluded patients who underwent total gastrectomy, had multiple lesions, or had missing data about the status of metastasis in the LNs that were included in D2 lymphadenectomy. Clinicopathologic characteristics and the metastasis in regional LNs were compared between patients with No. 14v LN metastasis(14v+) and those without(14v-).Results: Five hundred sixty patients were included in this study. Univariate analysis showed that old age, larger tumor size, tumor location, differentiation, lymphatic invasion, venous invasion, perineural invasion, T classification, and N classification were related to metastasis in No. 14v LN. Multivariate analysis showed differentiation(P=0.027) and N classification(P<0.001) were independent related factors. Metastasis in infrapyloric lymph node(No. 6 LN) and proxiaml splenic lymph node(No. 11p LN) was independently associated with metastasis in No. 14v ***: Differentiation and N classification were independent factors associated with No. 14v LN metastasis, and No. 6 and No. 11p LN metastasis were independent risk factors for No. 14v LN metastasis.

关键词： Gastric cancer gastrectomy lymphadenectomy superior mesenteric vein risk factor

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A comparative study of totally laparoscopic distal gastrectomy versus laparoscopic-assisted distal gastrectomy in gastric cancer patients: Short-term operative outcomes at a high-volume center

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Chinese Journal of Cancer Research 2018年第5期30卷 537-545页

作者： Won Ho Han Amir Ben Yehuda Deok-Hee kim Seung Geun Yang Bang wool Eom Hong Man Yoon young-woo kim Keun Won Ryu Center for Gastric Cancer National Cancer Center Department of Surgery Assaf Harofeh Medical Center

Objective： Laparoscopic gastrectomy has been established as a standard treatment for early gastric cancer, and its use is increasing recently. Compared with the conventional laparoscopy-assisted distal gastrectomy （LADG）, totally laparoscopic distal gastrectomy （TLDG） involves intracorporeal reconstruction, which can avoid the additional incision, resulting in pain reduction and early recovery. This study aimed to compare the short-term postoperative outcomes of TLDG vs. LADG in gastric cancer in a high-volume ***： A retrospective cohort study was conducted on 1,322 patients who underwent laparoscopic distal gastrectomy from June 2012 to June 2017 at the National Cancer Center, Korea. LAD G was performed in the early period before July 2015, and TLDG was applied in the later period. Postoperative short-term outcomes were compared in terms of complication and clinical course between the two groups. Pain score was measured by rating the pain intensity from 0 to 10 points on postoperative day （POD） 1 and 3. Results： A total of 667 patients underwent LADG and 655 patients underwent TLDG. Clinieopathologic characteristics were not different in both groups. Intraoperative estimated blood loss （EBL） was significantly lower in the TLDG group （P〈0.001）. Postoperative pain scores were significantly lower in the TLDG group than in the LADG group on POD 1 （5.1±1.5 vs. 4.8±1.4, P=0.015）. First flatus passage after operation was significantly earlier in the TLDG group （3.4±0.8 d vs. 3.2±0.6 d, P〈0.001）. There were no differences in postoperative complications and hospital stay between the two groups. Conclusions： Based on the reported short-term postoperative outcomes, TLDG is safe and feasible as well as LADG. Moreover, compared with LADG, TLDG can reduce intraoperative EBL and postoperative pain and enhance the bowel motility in gastric cancer surgery.

关键词： Distal gastrectomy gastric cancer intracorporeal anastomosis laparoscopic surgery

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A pilot clinical study to evaluate feasibility of using single patient classifier as a prognostic test in stage Ⅱ-Ⅲ gastric cancer patients

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Chinese Journal of Cancer Research 2024年第4期36卷 368-377页

作者： Ji Yeong An Sung Eun Oh Soomin Ahn Hyoung-II kim Yoo Min kim Minah Cho Keun Won Ryu Hong Man Yoon young Kyu Park In Gyu Kwon Sung Hoon Noh Kyung Hee Lee In Cho Myoung Won Son Jong Won kim young-woo kim Department of Surgery Samsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351Republic of Korea Department of Pathology and Translational Genomics Samsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351Republic of Korea Department of Surgery Yonsei University College of MedicineSeoul 03722Republic of Korea Gastric Cancer Center Yonsei Cancer CenterYonsei University Health SystemSeoul 03722Republic of Korea Center for Gastric Cancer National Cancer CenterGoyang 10408Republic of Korea Department of Surgery Chonnam National University Hwasun HospitalChonnam National University College of MedicineGwangju 58128Republic of Korea Department of Surgery Gangnam Severance HospitalYonsei University College of MedicineSeoul 06273Republic of Korea Department of Hematology-Oncology Yeungnam University Medical CenterDaegu 42415Republic of Korea Department of Surgery Soonchunhyang University College of MedicineBucheon 14584Republic of Korea Department of Surgery Soonchunhyang University Cheonan HospitalSoonchunhyang University College of MedicineCheonan 31151Republic of Korea Department of Surgery Chung-Ang University HospitalChung-Ang University College of MedicineSeoul 06973Republic of Korea

Objective:Precision medicine approaches emphasize the importance of reliable prognostic tools for guiding individualized therapy *** this study,we evaluated the clinical feasibility of the single patient classifier(SPC)test,a new clinical-grade prognostic assay,in stageⅡ-Ⅲgastric cancer ***:A prospective multicenter study was conducted,involving 237 patients who underwent gastrectomy between September 2019 and August 2020 across nine *** SPC test was employed to stratify patients into risk groups,and its feasibility and performance were *** primary endpoint was the proportion of the cases in which the test results were timely delivered before selecting postoperative ***,3-year disease-free survivals of risk groups were ***:The SPC test met the primary endpoint *** 99.5%of SPC tests were timely delivered to hospitals before the postoperative treatment *** a clinical setting,the median time from the specimen transfer to laboratory to the result delivery to hospital was 4 ***,3-year disease-free survivals were significantly different between risk groups classified with SPC ***:This study highlights the SPC test's feasibility in offering crucial information timely delivered for making informed decisions regarding postoperative treatment *** also provides evidence to support the implementation of a future prospective clinical trial aimed at evaluating the clinical utility of the SPC test in guiding personalized treatment decisions for gastric cancer patients.

关键词： Prognostic test advanced gastric cancer adjuvant chemotherapy feasibility gastrectomy

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Intravenous iron supplementation may be superior to observation in acute isovolemic anemia after gastrectomy for cancer

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World Journal of Gastroenterology 2014年第7期20卷 1852-1857页

作者： Hong Man Yoon young-woo kim Byung Ho Nam Daniel Reim Bang wool Eom Ji Yeon Park Keun Won Ryu Gastric Cancer Branch Research Institute and HospitalNational Cancer CenterGoyangsi 410-769South Korea Cancer Registration and Biostatistics Branch and Center for Clinical Trials National Cancer CenterGoyang-si 410-769South Korea Department of Surgery Soon Chun Hyang University HospitalSeoul 140-743South Kore

AIM: To determine whether the application of post-operative intravenous (IV)-iron for acute isovolemic anemia after gastrectomy for cancer may be effective.

关键词： Intravenous iron Observation Gastric cancer Acute isovolemic anemia Gastrectomy

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