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광방기에 의해 발생한 Chinese Herb Nephropathy
이재욱 ( Jay Wook Lee ),손민정 ( Min Jung Sohn ),허남주 ( Nam Joo Heo ),주권욱 ( Kwon Wook Joo ),정윤철 ( Yoon Chul Jung ),이정상 ( Jung Sang Lee ),한진석 ( Jin Suk Han ) 대한내과학회 2006 대한내과학회지 Vol.71 No.2
Chinese herb nephropathy (CHN) is characterized by progressive tubulointerstitial nephritis and development of renal failure in a couple of years after diagnosis. Aristolochic acid (AA) is believed to be associated with the development of CHN. The authors report a case of CHN in which AA in the herb regimen was identified by high-performance liquid chromatography (HPLC). A 32-year-old female presented with nausea, vomiting and generalized weakness. She had been taking Chinese herbs for symptomatic care. Clinical and laboratory examinations revealed Fanconi syndrome, renal failure, and severe anemia. Renal biopsy showed severe tubulointerstitial nephritis with moderate tubular atrophy and interstitial fibrosis. She developed end-stage renal failure 4 months after diagnosis. The herb she had been taking was Aristolochia fangchi. HPLC technique was used to identify AA and to measure its concentration in the herb. From the clinical and laboratory data, the patient was diagnosed with CHN caused by aristolochic acid.(Korean J Med 71:224-228, 2006)
이재욱 ( Jae Wook Lee ),남은지 ( Eun Ji Nam ),윤보성 ( Bo Sung Yoon ),김상운 ( Sang Wun Kim ),김재훈 ( Jae Hoon Kim ),김영태 ( Young Tae Kim ),김재욱 ( Jae Wook Kim ),김호근 ( Ho Keun Kim ),김성훈 ( Sung Hoon Kim ) 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.11
Ovarian fibromas originating primarily from the ovarian stroma are rare, accounting for approximately 4% of all ovarian neoplasm. The ovarian fibromas are mostly benign tumors, but infrequently they have histologically malignant appearances such as hypercellularity, high mitotic rate, marked nuclear pleomorphism. Malignant fibromatous tumor can be categorized on the basis of prognosis into two separate types of tumors, one of which is cellular fibroma (one to three miotic counts per 10 high power fields) and the other of which is fibrosarcoma (over four miotic counts per 10 high power fields) that has extremely poor prognosis. We report a case of large ovarian fibrosarcoma accompanied with pregnancy and have a brief review of literatures.
이재욱(Jae-Wook, Lee),배재남(Jae-Nam, Bae),정계환(Kye-Hwan Jeong),김근웅(Keun-Woong, Kim) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
Vibrations on industrial generators can be divided into electromagnetic, mechanical and aerodynamic vibration. Among them, the electromagnetic vibration is produced by combination of natural frequency and harmonics of magnetic flux, so it is relatively hard to predict the electromagnetic vibration. In this paper, we developed 1-way coupled (magnetic, stiffness) analysis technology to evaluate characteristics of the vibration induced by electromagnetic field. With the analysis, we investigated the forced vibration characteristics considering radial magnetic force, which was calculated from the magnetic analysis, on stator core teeth of the generator. And structure design reducing the electromagnetic vibration of the generator was suggested from the analysis results.
건설재료로서 고밀도 폴리에틸렌(HDPE)의 역학적 특성평가
남경용 ( Nam Kyung-yong ),이재욱 ( Lee Jae-uk ),최석 ( Choi Suk ),양근혁 ( Yang Keun-hyeok ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.2
The strengths and elastic modulus of high-density polyethylene in compression and tension met the minimum requirements of precast concrete products.
Helicobacter pylori 감염에서 CagA 및 VacA 발현과 위 상피세포 증식과의 관계
김남일(Nam Il Kim),이중현(Jung Hyun Lee),이영실(Yeoung Sil Lee),이재욱(Jae Uk Lee),이구(Goo Lee),서정일(Jeong Ill Suh),양창현(Chang Heon Yang),이창우(Chang Woo Lee),윤환중(Hwan Jung Yun),장태정(Tae Jung Jang),김정란(Jung Ran Kim),하경 대한내과학회 2000 대한내과학회지 Vol.58 No.5
Background : Infection with Helicobacter pylori (H. pylori) has been associated with an increased risk for developing gastric cancer. This risk is further enhanced with CagA positive H. pylori strains. Increased epithelial cell proliferation is associated with an increased risk for gastric cancer. The aim of the study was to investigate whether the gastric epithelial cell proliferation was related to the expression of CagA and VacA in H. pylori infection. Methods : The subjects were 77 patients who had undergone diagnostic esophagogastroduodenoscopy with biopsy; 18 gastritis, 18 gastric ulcer, 17 duodenal ulcer and 24 gastric cancer. The expression of cytotoxic genes was determined indirectly by assaying serum IgG antibodies to specific antigens of H. pylori. Gastric epithelial cell proliferation was assessed using immunohistochemical method using Ki-67 monoclonal antibody. Acute and chronic inflammation, intestinal metaplasia and glandular atrophy were scored according to the updated Sydney system. Results : Ki-67 labeling index, acute and chronic inflammation were significantly higher in H. pylori infected persons (n=70, 90.9%) than in uninfected persons (n=7, 9.1%) (p<0.05), but the difference in intestinal metaplasia and glandular atrophy between the two groups was not statistically significant. Ki-67 labeling indices in persons infected with CagA positive strains (n=56, 80.0%) were significantly higher than in persons infected with CagA negative strains (n=14, 20%) (0.55±0.13 vs 0.37±0.17, p<0.05), but the differences in acute and chronic inflammation, intestinal metaplasia and glandular atrophy between the two groups were not statistically significant. No significant difference was found in Ki-67 labeling index, acute and chronic inflammation, intestinal metaplasia and glandular atrophy according to expression of VacA. Conclusion : Gastric mucosal cell proliferation, which might be closely involved in the pathogenesis of gastric carcinoma, was significantly higher in CagA positive H. pylori infected persons.(Korean J Med 58:516-525, 2000)