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1Favorable surgical treatment outcomes for chronic constipation with features of colonic pseudo-obstruction显示文摘AIM:To determine long-term outcomes of surgical treatments for patients with constipation and features of colonic pseudo-obstruction.METHODS:Consecutive 42 patients who underwent surgery for chronic constipation within the last 13 years were prospectively collected.We identified a subgroup with colonic pseudo-obstruction(CPO) features,with dilatation of the colon proximal to the narrowed transitional zone,in contrast to typical slowtransit constipation(STC),without any dilated colonic segments.The outcomes of surgical treatments for chronic constipation with features of CPO were analyzed and compared with outcomes for STC.RESULTS:Of the 42 patients who underwent surgery for constipation,33 patients had CPO with dilatation of the colon proximal to the narrowed transitional zone.There were 16 males and 17 females with a mean age of 51.2 ± 16.1 years.All had symptoms of chronic intestinal obstruction,including abdominal distension,pain,nausea,or vomiting,and the mean duration of symptoms was 67 mo(range:6-252 mo).Preoperative defecation frequency was 1.5 ± 0.6 times/wk(range:1-2 times/wk).Thirty-two patients underwent total colectomy,and one patient underwent diverting transverse colostomy.There was no surgery-related mortality.Postoperative histologic examination showed hypoganglionosis or agangliosis in 23 patients and hypoganglionosis combined with visceral neuropathy or myopathy in 10 patients.In contrast,histology of STC group revealed intestinal neuronal dysplasia type B(n = 6) and visceral myopathy(n = 3).Early postoperative complications developed in six patients with CPO;wound infection(n = 3),paralytic ileus(n = 2),and intraabdominal abscess(n = 1).Defecation frequencies 3 mo after surgery improved to 4.2 ± 3.2 times/d(range:1-15 times/d).Long-term follow-up(median:39.7 mo) was available in 32 patients;all patients had improvements in constipation symptoms,but two patients needed intermittent medication for management of diarrhea.All 32 patients had distinct improvements in constipation symptoms(with a mean bowel frequency of 3.3 ± 1.3 times/d),social activities,and body mass index(20.5 kg/m 2 to 22.1 kg/m 2) and were satisfied with the results of their surgical treatment.In comparison with nine patients who underwent colectomy for STC without colon dilatation,those in the CPO group had a lower incidence of small bowel obstructions(0% vs 55.6%,P < 0.01) and less difficulty with long-distance travel(6.7% vs 66.7%,P = 0.007) on long-term follow-up.CONCLUSION:Chronic constipation patients with features of CPO caused by narrowed transitional zone in the left colon had favorable outcomes after total colectomy.Eon Chul Han Heung-Kwon Oh Heon-Kyun Ha Eun Kyung Choe Sang Hui Moon Seung-Bum Ryoo Kyu Joo Park 2012World Journal of Gastroenterology2012,18,32:16
2Probiotics for gastrointestinal disorders: Proposed recommendations for children of the Asia-Pacific region显示文摘Recommendations for probiotics are available in several regions. This paper proposes recommendations for probiotics in pediatric gastrointestinal diseases in the Asia-Pacific region. Epidemiology and clinical patterns of intestinal diseases in Asia-Pacific countries were discussed. Evidence-based recommendations and randomized controlled trials in the region were revised. Cultural aspects,health management issues and economic factors were also considered. Final recommendations were approved by applying the Likert scale and rated using the GRADE system. Saccharomyces boulardii CNCM I-745(Sb) and Lactobacillus rhamnosus GG(LGG) were strongly recommended as adjunct treatment to oral rehydration therapy for gastroenteritis. Lactobacillus reuteri could also be considered. Probiotics may be considered for prevention of(with the indicated strains): antibiotic-associated diarrhea(LGG or Sb); Clostridium difficile-induced diarrhea(Sb); nosocomial diarrhea(LGG); infantile colic(L reuteri) and as adjunct treatment of Helicobacter pylori(Sb and others). Specific probiotics with a history of safe use in preterm and term infants may be considered in infants for prevention of necrotizing enterocolitis. There is insufficient evidence for recommendations in other conditions. Despite a diversity of epidemiological,socioeconomical and health system conditions,similar recommendations apply well to Asia pacific countries. These need to be validated with local randomized-controlled trials.Donald Cameron Quak Seng Hock Musal Kadim Neelam Mohan Eell Ryoo Bhupinder Sandhu Yuichiro Yamashiro Chen Jie Hans Hoekstra Alfredo Guarino 2017World Journal of Gastroenterology2017,23,45:14
3Effect of Korea red ginseng on cerebral blood flow and superoxide production显示文摘AIM:To investigate the effects of Korea red ginsng(KRG) on the cerebral perfusion rate in the rats and the generation of superoxide anion in the endothelial cells.METHODS:The cerebral perfusion rate was measured using laser-doppler flowmetry before and after the administration of crude saponin(CS) and saponin-free fraction (SFF) of ERG in the anesthetized rats.The superoxide generation was measured by the method based on lucigeninenhanced chemiluminescence in the cultured endothelial cells.RESULTS:The relative cerebral perfusion rate (rCBF) was significantly increased by the intraperitoneal injection of CS(100mg/kg) in the rats,but SFF had no effect on the rCBF.Chronic treatment with CS for 7d significantly inhibited the decrease of forebrain cerebral blood frow induced by clamping both carotid arteries in the rats.Furthermore,CS(0.1g/L) significantly suppressed NADPH-induced superoxide generation in the human umbilical vein endothelial cells(P<0.01).CONCLUSION:The present study demonstrated that crude saponin fraction of KRG enhanced cerebral blood flow in rats.Furthermore,crude saponin fraction of KRG abrogated the NADPH-driven superoxide generation in endothelial cells.CukSeong KIM Jin Bong PARK Kwang-Jin KIM Seok Jong CHANG Sung-Woo RYOO Byeong Hwa JEON 2002Acta Pharmacologica Sinica2002,23,12:11
4Efficacy of Saam acupuncture treatment on improvement of immune cell numbers in cancer patients:a pilot study显示文摘OBJECTIVE: To collect preliminary data on the effects of Saam acupuncture with regard to the immunity in cancer patients.METHODS: Ten cancer patients were analyzed for improvements in immunity. Acupuncture was applied at the 5 acupuncture points, Jingqu(LU 8), Zutonggu(BL 66), Yanggu(SI 5), Yangchi(TE 4), and Zhongwan(CV 12) for 2 weeks with 4 sessions. We assessed the effect of Korean Saam acupuncture on the immune system in cancer patients by measuring particular blood cell subsets, including CD3 +,CD4+, CD8+, CD19+, and CD56+ cells, as well as total white blood cell count, absolute neutrophil count, and fatigue score. The measurement was performed before and after acupuncture and at a 2-week follow-up.RESULTS: There was a statistically significant increase in the number of CD3+(P=0.023) and CD8+ cells(P<0.001) and T-cell subsets, as well as a decrease in the fatigue severity scale(FSS) score(P=0.001) after Saam acupuncture using the 5 acupoints.CONCLUSION: Acupuncture may improve the immune system by increasing the counts of a few immune cells and relieve fatigue in cancer patients by decreasing FSS scores. Although this was a non-controlled study, it constitutes preliminary research investigating the potential effects of Saam acupuncture in increasing the counts of several immune cells in cancer patients.Dae-Joon Kim Seong-Hoon Park Jung-Chul Seo Kyung Soon Kim Ki Cheul Sohn Im Hee Shin Hun Mo Ryoo 2014Journal of Traditional Chinese Medicine2014,34,5:11
5Incidence of venous thromboembolism and the role of D-dimer as predictive marker in patients with advanced gastric cancer receiving chemotherapy:A prospective study显示文摘AIM To investigated the incidence and risk factors of venous thromboembolism(VTE) in patients with advanced gastric cancer(AGC) receiving chemotherapy.METHODS All consecutive chemotherapy-na?ve patients with AGC who would receive palliative chemotherapy between November 2009 and April 2012 in our hospital were recruited. Their pretreatment clinical and laboratory variables, including D-dimer, were recorded. The frequency of VTE development and survival rates during each chemotherapy cycle and regularly thereafter were assessed.RESULTS A total of 241 patients enrolled between November 2009and April 2012 were analyzed. During a median followup duration of 10.8 mo(95%CI: 9.9-11.7), 27 patients developed VTE and the incidence of VTE was 17.5%(95%CI: 10.5-24.0, 12.0 events/100 person-years). The 6-mo and 1-year cumulative incidences were 7.8%(95%CI: 4.2%-11.4%) and 12.4%(95%CI: 7.3-17.2), respectively. Thirteen(48.1%) patients were symptomatic and the other 14(51.9%) patients were asymptomatic. In multivariate analysis, pretreatment D-dimer level was the only marginally significant risk factor associated with VTE development(hazard ratio = 1.32; 95%CI: 1.00-1.75, P = 0.051).CONCLUSION The incidence of VTE is relatively high in patients with AGC receiving chemotherapy, and pretreatment D-dimer level might be a biomarker for risk stratification of VTE.Kwonoh Park Baek-Yeol Ryoo Min-Hee Ryu Sook Ryun Park Myoung Joo Kang Jeong Hye Kim Seungbong Han Yoon-Koo Kang 2017World Journal of Gastrointestinal Oncology2017,9,4:10
6Review of the Researches on Changma and Future Observational Study(KORMEX)显示文摘ReviewoftheResearchesonChangmaandFutureObservationalStudy(KORMEX)Jai-HoOh,Won-TaeKwonandSang-BomRyoMETRI,KoreaMeteorologicalA...Jai-Ho Oh Won-Tae Kwon Sang-Boom Ryoo 1997Advances in Atmospheric Sciences1997,14,2:6
7A phase II trial of a selective c-Met inhibitor tivantinib (ARQ 197) monotherapy as a second- or third-line therapy in the patients with metastatic gastric cancer显示文摘Yoon-Koo Kang Kei Muro Min-Hee Ryu Hirofumi Yasui Tomohiro Nishina Baek-Yeol Ryoo Yukimasa Kamiya Shiro Akinaga Narikazu Boku 2014Investigational New Drugs2014,,2:5
8Surface and Upper-Level Features Associated with Wintertime Cold Surge Outbreaks in South Korea显示文摘The surface and upper-level features associated with a sharp drop of wintertime daily temperature over South Korea is investigated in this study. This sharp drop in daily temperature is called a cold surge and is one of the most hazardous weather phenomena in East Asian winters. An upper-level baroclinic wave of 60° wavelength propagating eastward at a phase speed of 12° longitude per day across the continent of northern China from the west of Lake Baikal toward the eastern coast of China causes the outbreak of cold air over South Korea. The cooling associated with the upper-level baroclinic wave is found at all altitudes under the geopotential height-fall center near the tropopause. The development in the ridge seems to derive the early evolution of the eastward-propagating sinusoidal wave, whereas the trough is connected directly with the tropospheric temperature-drop. An enhancement of the wintertime East Asian jet stream after the outbreak of a cold surge is a response to the steep temperature gradient associated with the developing baroclinic wave.Sang-Boom RYOO Won-Tae KWON Jong-Ghap JHUN 2005Advances in Atmospheric Sciences2005,22,4:5
9Complications after ileal pouch-anal anastomosis in Korean patients with ulcerative colitis显示文摘AIM:To investigate the outcomes of treatments for complications after ileal pouch-anal anastomosis(IPAA)in Korean patients with ulcerative colitis.METHODS:Between March 1998 and February 2013,72 patients(28 male and 44 female,median age 43.0years±14.0 years)underwent total proctocolectomy with IPAA.The study cohort was registered prospectively and analyzed retrospectively.Patient characteristics,medical management histories,operative findings,pathology reports and postoperative clinical courses,including early postoperative and late complications and their treatments,were reviewed from a medical record system.All of the ileal pouches were J-pouch and were performed with either the double-stapling technique(n=69)or a hand-sewn(n=3)technique.RESULTS:Thirty-one(43.1%)patients had early complications,with 12(16.7%)patients with complications related to the pouch.Pouch bleeding,pelvic abscesses and anastomosis ruptures were managed conservatively.Patients with pelvic abscesses were treated with surgical drainage.Twenty-seven(38.0%)patients had late complications during the follow-up period(82.5±50.8 mo),with 21(29.6%)patients with complications related to the pouch.Treatment for pouchitis included antibiotics or anti-inflammatory drugs.Pouch-vaginal fistulas,perianal abscesses or fistulas and anastomosis strictures were treated surgically.Pouch failure developed in two patients(2.8%).Analyses showed that an emergency operation was a significant risk factor for early pouch-related complications compared to elective procedures(55.6%vs 11.1%,P<0.05).Pouchitis was related to early(35.3%)and the other late pouch-related complications(41.2%)(P<0.05).The complications did not have an effect on pouch failure nor pouch function.CONCLUSION:The complications following IPAA can be treated successfully.Favorable long-term outcomes were achieved with a lower pouch failure rate than reported in Western patients.Seung-Bum Ryoo Heung-Kwon Oh Eon Chul Han Heon-Kyun Ha Sang Hui Moon Eun Kyung Choe Kyu Joo Park 2014World Journal of Gastroenterology2014,20,23:4
10Surgical management of colonic diverticular disease:Discrepancy between right- and left-sided diseases显示文摘AIM:To compare the outcome of the surgical management of left-sided and right-sided diverticular disease.METHODS:The medical records of 77 patients who were surgically treated for diverticular disease between 1999 and 2010 in a tertiary referral hospital were retrospectively reviewed.The study population was limited to cases wherein the surgical specimen was confirmed as diverticulosis by pathology.Rightsided diverticula were classified as those arising from the cecum,ascending colon,and transverse colon,and those from the descending colon,sigmoid colon,and rectum were classified as left-sided diverticulosis.To assess the changing trend of occurrence of diverticulosis,data were compared with two previous studies of 51 patients.RESULTS:The proportion of left-sided disease cases was significantly increased compared to the results of our previous studies in 1994 and 2001,(27.5%vs48.1%,P<0.05).Moreover,no differences in gender,body mass index,multiplicity of the diverticula,fever,or leukocytosis were noted between patients with rightsided and left-sided disease.However,patients with right-sided disease were significantly younger(50.9year vs 64.0 year,P<0.01).Furthermore,left-sided disease was significantly associated with a higher incidence of complicated diverticulitis(89.2%vs 57.5%,P<0.01),combined resection due to extensive inflammation(21.6%vs 5.0%,P<0.05),operative complications(51.4%vs 27.5%,P<0.05),and in-hospital mortality(10.8%vs 0%,P<0.05),along with longer post-operative hospitalization duration(21.3±10.2 d vs 10.6±8.1 d,P<0.05).CONCLUSION:Compared with right-sided diverticular disease,the incidence of left-sided disease in Korea has increased since 2001 and is associated with worse surgical outcomes.Heung-Kwon Oh Eon Chul Han Heon-Kyun Ha Eun Kyung Choe Sang Hui Moon Seung-Bum Ryoo Seung-Yong Jeong Kyu Joo Park 2014World Journal of Gastroenterology2014,20,29:3
11Study protocol of the Asian XELIRI ProjecT(AXEPT):a multinational,randomized,non-inferiority,phase Ⅲ trial of second-line chemotherapy for metastatic colorectal cancer, comparing the eicacy and safety of XELIRI with or without bevacizumab versus FOLFIRI w显示文摘Background: Capecitabine and irinotecan combination therapy(XELIRI) has been examined at various dose levels to treat metastatic colorectal cancer(m CRC). Recently, in the Association of Medical Oncology of the German Cancer Society(AIO) 0604 trial, tri?weekly XELIRI plus bevacizumab, with reduced doses of irinotecan(200 mg/m^2 on day 1) and capecitabine(1600 mg/m^2 on days 1–14), repeated every 3 weeks, has shown favorable tolerability and eicacy which were comparable to those of capecitabine and oxaliplatin(XELOX) plus bevacizumab. The doses of capecit?abine and irinotecan in the AIO trial are considered optimal. In a phase I/II study, XELIRI plus bevacizumab(BIX) as second?line chemotherapy was well tolerated and had promising eicacy in Japanese patients.Methods: The Asian XELIRI Projec T(AXEPT) is an East Asian collaborative, open?labelled, randomized, phase Ⅲ clinical trial which was designed to demonstrate the non?inferiority of XELIRI with or without bevacizumab versus standard FOLFIRI(5?fluorouracil, leucovorin, and irinotecan combination) with or without bevacizumab as second?line chemo?therapy for patients with m CRC. Patients with 20 years of age or older, histologically conirmed m CRC, Eastern Coop?erative Oncology Group performance status 0–2, adequate organ function, and disease progression or intolerance of the irst?line regimen will be eligible. Patients will be randomized(1:1) to receive standard FOLFIRI with or with?out bevacizumab(5 mg/kg on day 1), repeated every 2 weeks(FOLIRI arm) or XELIRI with or without bevacizumab(7.5 mg/kg on day 1), repeated every 3 weeks(XELIRI arm). A total of 464 events were estimated as necessary to show non?inferiority with a power of 80% at a one?sided α of 0.025, requiring a target sample size of 600 patients. The 95% conidence interval(CI) upper limit of the hazard ratio was pre?speciied as less than 1.3.Conclusion: The Asian XELIRI Projec T is a multinational phase III trial being conducted to provide evidence for XELIRI with or without bevacizumab as a second?line treatment option of mCRC.Masahito Kotaka Ruihua Xu Kei Muro Young Suk Park Satoshi Morita Satoru Iwasa Hiroyuki Uetake Tomohiro Nishina Hiroaki Nozawa Hiroshi Matsumoto Kentaro Yamazaki Sae-Won Han Wei Wang Joong Bae Ahn Yanhong Deng Sang-Hee Cho Yi Ba Keun-Wook Lee Tao Zhang Taroh Satoh Marc E.Buyse Baek-Yeol Ryoo Lin Shen Junichi Sakamoto Tae Won Kim 2016Chinese Journal of Cancer2016,35,12:3
12Clinical significance of MET gene amplification in metastatic or locally advanced gastric cancer treated with first-line fluoropyrimidine and platinum combination chemotherapy显示文摘Objective: To investigate the clinical significance of MET gene amplification in patients with gastric cancer in the palliative setting.Methods: MET amplification was assessed using fluorescence in situ hybridization(FISH) in 50 patients and quantitative polymerase chain reaction(qPCR) in 326 patients;259 patients treated with first-line fluoropyrimidine and platinum were included for survival analysis.Results: The results of FISH and qPCR indicated that the c-MET/CEP7 ratio was correlated with gene copy number. The optimal cutoff value for the copy number using qPCR to detect MET gene amplification with FISH was 5(κ=0.778, P<0.001). Twenty-one out of 326 patients(6.4%) were identified as MET amplification with a copy number of >5 detected by qPCR. MET-amplified gastric cancer was associated with an Eastern Cooperative Oncology Group(ECOG) performance status(PS) score of ≥2(33.3% vs. 10.5% P=0.007), peritoneal metastasis(76.2% vs. 46.2%, P=0.008), and elevated bilirubin levels(28.6% vs. 7.3%, P=0.006). The median overall survival(OS) and progression-free survival(PFS) were 11.9 and 5.6 months, respectively. MET-amplified gastric cancer was not associated with survival outcomes [hazard ratio(HR)=0.68, 95% confidence interval(95% CI): 0.35-1.32,P=0.254 for PFS;HR=0.68, 95% CI: 0.35-1.32, P=0.251 for OS].Conclusions: qPCR can be used to detect MET gene amplification. MET amplification was not a predictor of poor prognosis in patients with metastatic or unresectable gastric cancer.Seyoung Seo Min-Hee Ryu Baek-Yeol Ryoo Yangsoon Park Young Soo Park Young-Soon Na Chae-Won Lee Ju-Kyung Lee Yoon-Koo Kang 2019Chinese Journal of Cancer Research2019,31,4:3
13Analysis on sports and recreation activity-related eye injuries presenting to the Emergency Department显示文摘AIM:To investigate the incidence and general characteristics of sports-related eye injuries in patients visiting the Emergency Department. METHODS: A cross-sectional,multi-center,observational study.Patients with an injured eye who visited the Emergency Department at one of nine hospitals in Korea were enrolled.All data were prospectively collected between March and September 2010 using a questionnaire.Eye injuries that occurred during risky sports were examined by gender and age.Additionally,the rate of open globe injuries that occurred with and without protective eyewear was examined for each activity.Continuous variables were compared using Student's t-test and categorical variables were compared using Chi-square test.RESULTS: A total of 446 patients had sports-related eye injuries.Teenagers(10-19 years old) and young adults(20-29 years old) had the most eye injuries.Eye injuries accounted for 0.2% of Emergency Department patients.Baseball was the most common cause of sports-related eye injuries,followed by soccer and hiking.Protective gear was worn by 9.4% of all patients.Patients that were 30-39 years of age had the highest rate of protective gear use,followed by patients that were 40-49 years of age.The proportion of sports-related eye injuries that were open-globe injuries was highest for soccer and hiking.CONCLUSION: Although injuries were most common in patients below the age of 10 years,these patients had the lowest rate of protective eyewear use.Injuries in adults over 40 years of age most commonly occurred during hiking,but the rate of protective eyewear use was low.Young athletes should be educated on and provided with protective eyewear and policies protective gear use should be established.For older adults,eye protection should be encouraged,especially during hiking.Sungbae Moon Hyun Wook Ryoo Jae Yun Ahn Jung Bae Park Kang Suk Seo Sang Do Shin Kyoung Jun Song Kang Hyun Lee In Sool Yoo Jin Seong Cho Hyun Ho Ryu Tae Oh Jeong Seok Ran Yeom Young Taek Kim Sung Ok Hong 2016International Journal of Ophthalmology(English edition)2016,9,10:3
14Molecular mechanisms of lipopolysaccharide-mediated inhibition of glutathione synthesis in mice显示文摘Maria Lauda Tomasi Minjung Ryoo Heping Yang Ainhoa Iglesias Ara Kwang Suk Ko Shelly C. Lu 2014Free Radical Biology and Medicine2014,,:2
15Neoadjuvant Chemoradiotherapy Affects the Indications for Lateral Pelvic Node Dissection in Mid/Low Rectal Cancer with Clinically Suspected Lateral Node Involvement: A Multicenter Retrospective Cohort Study显示文摘Heung-Kwon Oh Sung-Bum Kang Sung-Min Lee Soo Young Lee Myoung Hun Ihn Duck-Woo Kim Ji Hoon Park Young Hoon Kim Kyung Ho Lee Jae-Sung Kim Jin Won Kim Jee Hyun Kim Tae-Young Chang Sung-Chan Park Dae Kyung Sohn Jae Hwan Oh Ji Won Park Seung-Bum Ryoo Seung-Yo 2014Annals of Surgical Oncology2014,,:2
16Effects of the proteasome inhibitor bortezomib alone and in combinationwith chemotherapeutic agents in gastric cancer cell lines显示文摘Sung Bae Hun-Mo Ryoo Min Kim Kyung Lee Jeong-Im Sin Myung Hyun 2008Oncology Reports2008,,4:2
17Comparison of Chemoembolization with and without Radiation Therapy and Sorafenib for Advanced Hepatocellular Carcinoma with Portal Vein Tumor Thrombosis: A Propensity Score Analysis显示文摘Gi-Ae Kim Ju Hyun Shim Sang Min Yoon Jinhong Jung Jong Hoon Kim Min-Hee Ryu Baek-Yeol Ryoo Yoon-Koo Kang Danbi Lee Kang Mo Kim Young-Suk Lim Han Chu Lee Young-Hwa Chung Yung Sang Lee 2014Journal of Vascular and Interventional Radiology2014,,:2
18Series compensated step-down AC voltage regulator using AC chopper with transformer 显示文摘Ryoo H J Kim J S Kim G H 2003Electrical Machines and Systems2003,,:1
19Adherence and biofilm formation of staphylococcus epidermidis and mycobacterium tuberculosis on various spinal implants显示文摘Ha KY Chung YG Ryoo SJ 2005Spine2005,30,1:1
20Synthesis of highly ordered carbon molecular sieves via template-mediated structural transformation 显示文摘Ryoo R Joo S H Jun S 1999J Phys Chem B1999,103,37:1
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