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인슐린 비의존형 당뇨병 환자에서 혈장 Endothelin-1농도의 변화
신양수,조희충,김원식,국기용,김용화,정종훈,문철웅,배학연,양성훈 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.2
Endothelin(ET) is a 21-residue peptide originally isolated from the cultured porcine endothelial cells. There are at least three genes for endothelin:endothelin-1(ET-1), endothelin-2(ET-2), and endothelin-3(ET-3). Endothelins are present in various human biological fluids including plasma, urine, breast milk, and saliva and have been found elevated plasma ET concentrations in patients with diabetes mellitus, Patients undergoing maintenance hemodialysis due to chronic renal failure, patients with acute myocardial infarction, and patients with subarachnoid hemorrhage. Endothelial cell damage is suspected to occur in diabetic patients and may be one important cause of angiopathy, a major complication in diabetes mellitus. The elevation of ET in diabetic patients may be a marker of, and further exacerbate, their vascular disease. We measured the levels of ET-1 in plasma of 50 patients with non-insulin dependent diabetes mellitus(NIDDM) and 25 normal subjects by radioimmunoassay. The plasma ET-1 concentration (mean±S.D.) in NIDDM was 6.461 A2.510 f㏖/ ㎖, and was significantly higher than in normal subjects (4.567±1.155f㏖/㎖) (P<0.05). The plasma ET-1 concentration (mean±S.D.) in diabetic retinopathy group( 7.15±2.454 f㏖/ml) was significantly elevated than those in otherwise uncomplicated groups (5.348±2.390 f㏖/㎖)(P<0.01). The correlation between any clinical parameters and plasma ET-1 levels in NIDDM was not significant, In conclusion, this study suggest that the elevated levels of ET-1 in diabetic patients may be play a important role in the pathogenesis of diabetic complications.
윤웅용,이규용,이영주,김희태,김주한,김명호,Yoon, Oong-Yong,Lee, Kyu-Yong,Lee, Young Ju,Kim, Hee-Tae,Kim, Juhan,Kim, Myung-Ho 대한임상신경생리학회 2001 Annals of Clinical Neurophysiology Vol.3 No.2
Background : Backpack palsy was described in military personnel with shoulder girdle and proximal upper extremity symptoms, predominantly motor in nature related to the use of heavy backpack. Currently, backpack were used for sports, transporting school books and child carriers. We evaluated clinical and electrophysiological feature of backpack palsy. Methods : We included 11 patients with brachial plexopathy as a result of wearing a heavy backpack on long distance marches. All patients were done routine blood sampling, chest X-ray, C-spine X-ray and electrophysiological studies. Results : All patients were right handed person and were not as having a thoracic outlet syndrome. Sensory changes were main initial symptoms and major persistent symptoms were motor weakness. 9 patients(81.8%) were damaged the brachial plexus on non-dominant side, 1 patient was dominant and 1 patient was bilateral involvement. 10 patients(90.9%) were damaged to upper trunk of the brachial plexus by EMG findings. The prognosis was good, 10 patients(90.9%) were complete recovery during 8 weeks, 1 patient was developed reflex sympathetic dystrophy confirmed by 3-phase bone scan. Conclusions : Depression of the clavicle and costoclavicular space probably plays a certain role in pathogenic mechanism. The non-dominant side is more frequently affected, probably due to underdevelopment of the musculature in that side.
이승현,범희승,김대식,이진웅,김지운,최요안,윤태용,김영용,박찬웅 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.6
Bezoars are persistent concretions of indigestible material, usually seen in the stomach. Esophageal bezoars are very rare and generally occur in elderly patients with anatomic defects such as diverticulum or stricture, or with esophageal motility disorders. However, it is quite unusual that a gastric bezoar would be regurgitated into a normal esophagus during forceful vomiting. Endoscopic removal of a bezoar is safe and successful in most cases. A case of a gastric bezoar regurgitated into the esophagus was recently experienced and removed by an endoscopic polypectomy snare and bezoar (lithotripsy) basket.
공기압을 이용한 패드 변압기 침수방지용 장치 개발에 관한 연구
김기현(Gi-Hyun Kim),이상익(Sang-Ick Lee),배석명(Seok-Myung Bae),정찬웅(Chan-Oong Jung),이재용(Jae-Yong Lee) 대한전기학회 2009 전기학회논문지 P Vol.58 No.1
The inundation of substation and ground power equipment breaks out every summer season in low-lying downtown and low-lying shore by localized heavy rain, typhoon and tidal wave. For diminishing flood damage of electrical equipment in the root, flood protection system which is used the basic frame of Pad transformer is developed using pneumatic pressure. This system is established on pressure generator equipment and sensor of flooded level operates at flooding occurrence and is maintained a shutting tightly structure. The system is able to protect indraft water in Pad Transformer and supply the electricity at emergency(flooding). And we tested safety for insulation resistance at flooding and applying an electrical current. We estimate that loss cost which is caused by with flooding and the power failure will be diminished if it is addition to advances the reliability evaluation by setting an example.