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Helicobacter pylori 감염 진단에서 QuickVue H . pylori 검사와 기존의 IgG ELISA 검사와 비교 , 검토
이국래(Kook Lae Lee),임창영(Chang Young Lim),이동호(Dong Ho Lee),윤정환(Jung Hwan Yoon),이한주(Han Ju Lee),정현채(Hyun Chae Chung),송인성(In Sung Song),김정룡(Chung Yong Kim) 대한소화기학회 1997 대한소화기학회지 Vol.29 No.1
N/A Background/Aims: To evaluate and compare the efficacy of QuickVue H. pylori test and IgG ELISA test in diagnosis of Helicobacter pylori infection. Methods: One hundred patients(46 gastritis patients, 18 gastric ulcer patients, 18 duodenal ulcer patients, 15 nonulcer dyspepsia patients, 3 others including gastric cancer and adenoma) were enrolled in this study. Endoscopic gastric antral biopsy specimens were obtained for microscopic examination of the bacteria and rapid urease test(CLO test). Bio-Rad GAP IgG ELISA test(Bio-Rad Chemical Division, U.S.A.) and QuickVue H. pylori test(Quidel, U.S.A.) were also performed for serologic diagnosis of H. pylori infection. Detection of H. pylori by microscopy was considered as true positive for H. pylori infection. Absence of H. pylori by microscopy and positive CLO test was considered as equivocal and these cases were exc]uded in the analysis of the data. Results: 57 patients(57%) were positive, 36 patients(36%) were negative and 7 patients(7%) were equivocal in H. pylori infection. The sensitivity of IgG ELISA test was 84.2% and the specificity was 52.8%. The sensitivity of QuickVue H. pylori test was 87.7% and the specificity was 61.1%. Conclusions: Both serologic tests for the diagnosis of H. pylori infection are comparable in sensitivity and specificity.(Korean J Gastroenterol 1997; 29:35 -40)
금식시 흰쥐 소장 점막 유당분해효소에 대한 갑상선 호르몬의 영향 및 이의 유전적 조절 기전
이국래(Kook Lae Lee),이동호(Dong Ho Lee),이한주(Han Ju Lee),윤정환(Jung Hwan Yoon),김재규(Jae Gyu Kim),정운태(Woon Tae Jeong),정현채(Hyun Chae Jung),송인성(In Sung Song),김정룡(Chung Yong Kim) 대한소화기학회 1996 대한소화기학회지 Vol.28 No.6
N/A Background/Aims: We perforrned this experiment to investigate the effect of thyroid hormone on the ]actase activity of rat small intestine by observing the change of lactase level according to the application of thyroid hormon: during fasting. Methods: Forty five male Wistar rats weighing about 260 gram were divided into three groups. The rats of control group(n=5) were sacrificed at 0 hour. The rats of first group(n=20) were starvated with intraperitoneal injection of 0.01 M NaOH 0.1 cc/100 gm body weight daily. The rats of second group(n=20) were starvated with intraperitonea] injection of triicdothyronine(T3) 30 ug disso]ved in 0.01 M NaOH 0.1 cc/100 gm body weight daily. The rats of first and second group were sacrificed at 12 hour, 1 day, 3 day, 5 day respectively, After sacriticing we measured T3 and free T4 level in serum, and intestinal lactase activity from three equally divided segments of removed small intestine. Ancl lactase mRNA were also measured. Results: The T3 and free T4 levels decreased in the NaOH injected groups, especially 3 day or 5 day groups, and T3 level increased in all the thyroid horrnone injected poups but free T4 level decreased. Lactase activity of proxima! Intestine was elevated with fasting, but not elevated in T3 application group. Lactase activity of middle and distal intestine showed similar changes. There was no statistically significant corre1ation between lactase activity and rnRNA level. Con< lusions: Lactase activity is controlled by thyroid hormone. Lactase expression may be regulated at the posttranscription level. (Korean J Gastroenterol 1996; 28:7S7-797)
대장상피세포에서 Interleukin-10 유전자 전달의 CXC 케모카인에 대한 억제 효과
이국래 ( Kook Lae Lee ),김찬규 ( Chan Gyoo Kim ),김병관 ( Byeong Gwan Kim ),장동경 ( Dong Kyung Chang ),이동호 ( Dong Ho Lee ),김주성 ( Joo Sung Kim ),정현채 ( Hyun Chae Jung ),이연 ( Yeon Lee ),박종상 ( Jong Sang Park ),송인성 ( 대한소화기학회 2003 대한소화기학회지 Vol.41 No.6
Background/Aims: Cytokine plays an important role in initiation and continuation of inflammatory bowel disease. However, cytokine protein has some limitation as a therapeutic tool because of low bioavailability, poor pharmacokinetics and chemical instability. Thus, we studied the effect of interleukin 10 (IL-10) gene transfection on murine colon cancer cell line by using non-viral gene carrier. Methods: Therapeutic gene and plasmid was pCAGGS mouse IL-10 and gene carriers were polyethyleneimine (PEI) and 3β[L-ornithinamide-carbamoyl] cholesterol (O-chol). After IL-10 gene transfection, we measured the level of IL-10 in supernatant of cultured CT-26 cells. The chemokine cytokine-induced neutrophil chemoattractant (KC) and macrophage inflammatory protein (MIP)-2, which were treated with lipopolysaccharide (LPS) or tumor necrosis factor-alpha (TNF-α), were measured after IL-10 gene transfection. Results: The IL-10 values were increased significantly by using PEI, but not by using O-chol. The KC and MIP-2 values were increased when LPS or TNF-α were treated. When PEI was used, KC and MIP-2 values increased by LPS or TNF-α were decreased. When O-chol was used, the KC values increased by TNF-α were decreased but those treated by LPS were not decreased, and the MIP-2 values were not decreased. Conclusions: After IL-10 gene transfection in colon cancer cell, IL-10 cytokine was efficiently expressed. The increased chemokine values by LPS or TNF-α were suppressed by IL-10 gene transfection, but which was not constant because of carrier efficiency. (Korean J Gastroenterol 2003;41:447-455)