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이종균 ( Jong Kyun Lee ) 대한내과학회 2011 대한내과학회지 Vol.81 No.2
Antiplatelet drugs are associated with gastro-intestinal bleedings. Aspirin is one of most popular medicines for cardiovascular diseases. Endoscopic sphincterotomy (EST) has a high procedural risk of bleeding. However, there has been no evidence-based study about taking aspirin before and after EST. There are controversies in the guidelines from American Society for Gastrointestinal Endoscopy, British Society of Gastroenterology, and Japan Gastroenterological Endoscopy Society. Continuous intake of aspirin before EST is recommended in Western guidelines. To the contrary, 3 to 7 days cessation of aspirin before EST is needed according to Japan guidelines. Until a well-organized study make definite evidence, personalized approach is prudent to decide to stop or continue to take aspirin before and after EST. (Korean J Med 2011;81:190-192)
이종균(Jong Kyun Lee),이풍렬(Poong Lyul Rhee),강동묵(Tong Mook Kang),김재준(Jae Jun Kim),고광철(Kwang Cheol Koh),백승운(Seung Woon Paik),이종철(Jong Chul Rhee) 대한소화기학회 1998 대한소화기학회지 Vol.30 No.1
N/A Background/Aims: Acetylcholine(Ach) is the most irnportant rnediator in vagal-induced and cholecystokinin-induced gallbladder contraction. There are several rnuscarinic receptor subtypes characterized by pharmacologic study. The majority of smooth muscles from many species exhibit heterogenous populations of muscarinic receptors and different subtypes activate different signal transduction pathways. Therefore, it is important and essential to characterize the muscarinic receptor subtypes for understanding the mechanism of muscle contraction in a certain tissue. The aim of the present study was to characterize the muscarinic receptor subtypes in guinea pig gallbladder smooth muscle using relatively selective receptor subtype antagonists. Methods: Gallbladder muscle strips were prepared and mounted in an organ bath. Isometric contractions were recorded on a polygraph. 50% inhibitory concentrations(Icqp) and pA (-log KB) values of pirenze- pine, methoctramine, and 4-DAMP(M1, M2, and M3 antagonist, respectively) were compared on Ach-induced gallbladder muscle contraction. Results: Icsp of pirenzepine, methoctramine, and 4-DAMP on 1pM Ach-induced contraction were 7.8 > 10 'M, 2.'7 x 10 M, and 3,7 x 10 M, respectively. pA, values of pirenzepine, methoctramine, and 4-DAMP were 6.8, 5.0 and 11.4, respectively. Conclusions: M3 subtype may play the most important role in Ach-induced contraction of guinea pig gallbladder muscle. (Korean J Gastroenterol 1997; 30:90 - 97)
담관 폐쇄 환자에서 담도압 상승과 관련이 있는 임상 지표
이종균(Jong Kyun Lee),이풍렬(Poong Lyul Rhee),김재준(Jae Jun Kim),고광철(Kwang Cheol Koh),백승운(Seung Woon Paik),이종철(Jong Chul Rhee),주성욱(Seong Wook Choo),주인욱(In Wook Choo) 대한소화기학회 1996 대한소화기학회지 Vol.28 No.3
N/A Background/Aims: Increased bile duct pressure is the major factor responsible for acute cholangi- tis and bacteremia. Therefore, prompt medical or surgical decompression of bile under high pressure should be accomplished as fast as possible. But, measuretnent of bile duct pressure is invasive. So, the present study was undertaken to find out the clinical factors to predict the increased biliary pressure in patients with bile duct obstruction. Methods: Thirty-three patients with bile duct obstruction underwent percutaneous transhepatic biliary drainage(PTBD). Intraductal pressure was measured as soon as bile duct pucture was performed. Bile cultures were performed in 24 patients and blood cultures were performed in 21 patients. Correlation of bile duct pressure and severity of pain, duration of symptom, fever, leukocytosis, serum bilirubin, serurn alkaline phosphatase, or bile duct diameter were statistically analyzed. Results: Bacteremias were noticed in 5 of the 17 patients with positive bile culture. Bacteremia was associated with the increased biliary pressure. Bacteremia was demonstrated when the biliary pressure was 22 cmHyO or more. Biliary pressure was associated with the severity of pain and body temperature. Significant correla- tion was not found between the duration of symptom, leukocytosis, serum bilirubin, serum alkaline phosphatase, or bile duct diameter and biliary pressure. Conclusions: Increased biliary pressure in patients with bile duct obstruction is more likely to be associated with severity of pain and fever than leukocytosis, bilirubin level, alkaline phosphatase level, or bile duct diameter. (Korean J Gastroenterol 1996; 28:409 - 414)
이종균(Jong Kyun Lee),이풍렬(Poong Lyul Rhee),이준혁(Joon Hyeok Lee),이규택(Kyu Taek Lee),최성호(Sung Ho choi),노재형(Jae Hyung Noh),김재준(Jae Jun Kim),고광철(Kwang Cheol Koh),백승운(Seung Woon Paik),이종철(Jong Chul Rhee) 대한소화기학회 1997 대한소화기학회지 Vol.29 No.4
Benign recurrent intrahepatic cholestasis(BRIC) is a very rare cholestatic condition of unknown etiology and its main clinical feature is multiple recurrent episodes of cholestasis with no extrahepatic bile duct obstruction. Familial and nonfamilial forrns of BRIC have been described. We report a case of two sisters with benign recurrent intrahepatic cholestasis. They have experienced recurrent jaundice since childhood. Extrahepatic bile duct obstructions were excluded by ultrasonography and endoscopic retrograde cholangiopancreatography. Liver biopsy specimens showed centri]obular hepatocytic cholestasis. Lobular architectures and portal tracts were well preserved without inflammation.(Korean J Gastroenterol 1997; 29:249-253)
이종균 ( Jong Kyun Lee ) 대한췌장담도학회 2014 대한췌담도학회지 Vol.19 No.1
Autoimmune pancreatitis should be differentiated from pancreatobiliary cancers because they often have similar clinical features and images. Accurate and practical diagnostic algorithm for AIP is important to avoid unnecessary surgery and delayed treatment. International Consensus Diagnostic Criteria for AIP suggested that diagnostic algorithms and the practical patterns considerably vary worldwide. Patients with clinically suspected AIP can be categorized into patients with typical features of AIP and patients with indeterminate features based on CT findings. Serology and other organ involvement can be used as collateral evidence of AIP. If a patient presents with diffuse pancreatic enlargement but is lack of collateral evidence, pancreatogram could be useful. If a patient has obstructive jaundice, biliary drainage and endobiliary biopsy are recommended. Duodenal papillary biopsy for IgG4 immunostain can be used during ERCP. In case of atypical imaging findings, EUS-guided FNA/biopsy is recommended to exclude pancreatic cancer and to obtain the suggestive findings of AIP. If type 2 is clinically suspected, EUS-guided core biopsy is required for the definite diagnosis. Short-term steroid trial can be performed to confirm the diagnosis of AIP when pancreatobiliary cancer workup shows negative results. However, clinical practice in diagnosing AIP varies depending on the local expertise, facilities, cost, prevalence of AIP and its subtypes. Korean J Pancreatobiliary 2014;19(1):7-12
이종균(Lee Jong-Kyun),박성무(Park Sung-Moo) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)
The main material of wooden structures is wood, can be obtained easily in nature and higher strength per unit weight as well as eco-friendly and process of the manufacture has been superb. A weak point is Knots, while, cross grain, vermin by insects, fire and strength degradation due to fatigue and corrosion by deterioration. especially the deterioration of the wooden structure must be accompanied by appropriate conservation measures, because it is most the cultural assets. Conservation of wooden structure as possible, reuse the original repair itself, the consideration of the cultural value of attending to the basic principle is to maintain a archetype. Accordingly, the physical and chemical combined methods using a synthetic resins is emerging. A study on conservation methods using synthetic resins is only a short time. So former studies was the aspect of pure science to conserve, it is not that improvement of capacity using synthetic resins in wooden structures. Therefore, this study will confirm the possibility of usability in practice and an effect of reinforcement in compressive element possessed rectangular section. The results of the experiment, the compressive element with rectangular section rather than the direction of radiation in the direction of tangent reinforcement is more effective and less ratio of reinforcement is more effective. It is also effective on the total length of the element and adequate reinforcement is more efficient than new element.