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HBsAg 양성 급성 간염에서 간조직내 B 형 간염 바이러스 항원 검색의 임상적 의의
서상렬(Sang Yeol Suh),서동진(Dong Jin Suh) 대한내과학회 1989 대한내과학회지 Vol.37 No.2
N/A To evaluate the clinical significance of hepatitis B virus antigens in liver in HBsAg positive acute viral hepatitis, HBsAg end HBcAg were detected by the ABC immunoperoxidase method in 39 paraffin embedded liver tissues with histologic findings of acute viral hepatitis, and their correlation with serologic markers of HBV was studied. The results were as follows; 1) Among 39 patients with HBsAg positive acute viral hepatitis, hepatitis B virus antigens in liver tissue were demonstrated in 22 patients (56.4%). Of the 22 patients, both HBsAg and HBcAg were demonstrated in 7 patients, HBsAg only in 11 patients and HBcAg in 4 patients. 2) IgM anti-HBc was positive in 15 (38.4%)of the 39 patients. While IgM anti-HBc was positive in 2 (9%) among 22 tissue antigen positive patients, 13 (76.5%)of the 17 patients without tissue antigen had IgM anti- HBc. 3) Serum HBV-DNA was positive in 69.2%. While HBV-DNA was positive in 86.7% of tissue antigen positive patients, 54.5% of patients without tissue antigen did not have HBV-DNA. The level of serum HBV-DNA was significantly higher in tissue antigen positive patients (30.1±38.9pg/ml) than in negative patients (5.2±3.4pg/ml). 4) Twenty-seven patients were followed over 6 months. Although HBsAg was seroconverted in S (88.9%) among 9 patients without tissue antigen, all patients who had hepatitis B virus antigens in the liver had persistent hepatitis B surface antigenemia over 6 months. The presence of HBV antigens in the liver in acute HBsAg positive hepatitis appears to correspond with acute exacerbation of chronic HBV infection or superinfection with non-B hepatitis virus in HBU carriers rather than acute HBV infection, since most of them have no IgM anti-HBc and have chronic antigenemia. Such conditions may occur frequently in Korea where the HBsAg carrier rate is high.
본태성고혈압 및 만성신부전에서 요 Prostaglandin E₂의 의의(義意)
김형규,변관수,서상렬,남궁호삼,흥순국 대한신장학회 1984 Kidney Research and Clinical Practice Vol.3 No.2
In order to define tke changes of urine prosta- glandin E in chronic renal failure, urine excre-tion of prostaglandin E, was measured ' in 24 normal control group, in 23 essential hypertension not associated with renal impairment, and in 25 chronic renal failure associated witn hypertension of which creatinine clearance was below 20 ml/ min. Otherwise serum and urine sodium, serum creatinine and creatinine clearance were measured. The results obtained are as follows; 1) The value of urine prostaglandin E, in nor- mal control group is 367.1±168.24(mean S.D.) pg/ml., in essential hypertension 350.4±97.32 pg/ ml. And in chronic renal failure with hyperte nsion 84. 5±40. 76 pg/ml. Respectively. In chronic renal failure group, urine prostaglandin E, is significantly lower than in normal control group (P$lt;0. 01). 2) Urine prostaglandin E, has no significant relation to diastolic blood pressure, serum and urine sodium and creatinine clearance in each group. 3) Urine prostaglandin E, is not reIated to sex ange distribution. In our results, it is cansidered that the decrease of urine prostaglandin E in chronic renal failure is accompanied by the progressrve reduction of renal functioning mass.
Electrification Powertrain 적용 Platform개발에 관한 연구
문병호(Byoungho Moon),서상렬(Sangyeol Seo) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
To prevent global warming in the automotive section, European EPA have chosen to limit CO₂ emission while the USA have chosen fuel consumption and the limit has been tightening every year. Eco-friendly car is no longer an option for automotive companies, it is vital for them to jump over the emerging environmental trade barrier. This report will introduce various types of electrification powertrain and driven type then assess the customer"s acceptability of each platform. With this result we may set up the company"s direction of electric vehicle development and possibility for commonizing between electric vehicle platform and conventional ICE vehicle platform.
만성 신부전 환자에서 복막 투석중 발생한 Chyloperitoneum 1예
김영준,이순애,정상용,서상렬,임규철,정종익,김진휘,권덕호 대한신장학회 1998 Kidney Research and Clinical Practice Vol.17 No.4
Chylous ascites is extravasation of lymphatic fluid and retention in the peritoneal cavity due to traurna or obstruction of the lymphatic system. Chylous ascites is very rare complication of Continuous Ambulatory Peritoneal Dialysis(CAPD) and is associated with trauma to the lymphatics during catheter insertion in the early stage of CAPD and repeated mild trauma to the lyrnphatics during long-term dialysis. Chylous ascites in the CAPD is suspected when the drained peritoneal fluid is milky white and confirmed by demonstration of the specific components of chyle, such as elevated triglyceride and low cholesterol than plasma and should be differentiated from pseudochyle and bacterial peritonitis. We report a case of chylous ascites in a patient undergoing CAPD at 2 months later of initiation of CAPD, which was not improved by conservative management. So CAPD catheter was removed and renal replacement therapy was changed to hemodialysis.
DSP에 기초한 모터 속도 제어용 2자유도 제어기 구현을 위한 시뮬레이션
최우석(Wooseok Choi),서상렬(Sang Yeol Seo),이세한(Se-Han Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
In this research a simulation for implementing 2-D.O.F. motor speed controller based on DSP is carried out. By using the reference input and plant output, a 2-D.O.F. controller is expected to show better control performance than a simple feedback controller that is using only the difference information between the reference input and plant output. Additionally, it is well known that a 2-D.O.F. controller allows the control system to have better control performance without contaminating its stability. When a DSP is used for motor control, the 2-D.O.F. control scheme is easily to added to the original controller with adding some lines of program codes. The simulation of the motor speed control is carried out by taking account of input/output accuracy quantization characteristics of a DSP. The resultant program codes may be able to be used for an actual DSP controller.
혈전성 혈소판 감소성 자반증의 임상상을 보인 항사구체 기저막 항체질환 1 예
천정현(Jeong Hyun Chun),서상렬(Sang Yeol Suh),조상경(Sang Kyung Jo),김형규(Hyoung Kyu Kim),조원용(Won Yonpg Cho) 대한신장학회 2001 Kidney Research and Clinical Practice Vol.20 No.2
Thrombotic thrombocytopenic purpura(TTP) was first described in 1925, however, the definite cause of TTP remained unknown. Further study revealed that the pathogenesis of thrombotic thrombocytopenia was related to autoimmune disease. Autoantibodies generated by vessel injury and other causes result in excessive platelet aggregation and consumption. Recently, many autoimmune diseases and conditions associated with vascular injury have been reported to be accompanied by TTP-like feature, such as microangiopathic hemolytic anemia and thrombocytopenia. Anti-glomerular basement membrane(GBM) mediated glomerulonephritis is also related to autoantibody against collagen IV fiber in GBM, and cha- racterizded by diffuse glomerular capillary injury. Although the relationship of these two diseases is not clearly defined, here we report a case of anti- GBM antibody disease accompanied by TTP-like feature in a 40-year old man admitted for dyspnea. The patient had hemolytic anemia, thrombocytopenia, and acute renal failure. Anti-GBM antibody was positive and crescent formation and linear deposition of IgG along glomerular basement membrane was seen in renal biopsy. Disease progressed with no clinical response despite of prompt treatment by steroid and cyclophosphamide pulse therapy and plasmapheresis.