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Mouse 신장에서 Azide가 반응성 산소에 의한 독성에 미치는 영향
곽상택,권태우,장현정,백광진,권년수,이희성 중앙대학교 의과대학 의과학연구소 1993 中央醫大誌 Vol.18 No.3
An increased production of reactive oxygen species has been postulated as a major pathogenic factor in the tissue damage occurring in high oxygen environment. Azide could enhance the oxygen toxicity by inhibiting superoxide dismutase and catalase, enzymes which remove reactive oxyge species. Mice were treated with azide (8.1 ㎎/㎏ body weight), and placed in a chamber saturated with 100% O_2 for 3, 6, 12, 24, 48 or 72 h. Superoxide radical generation, and activities of xanthine oxidase, superoxide dismutase and catalase in homogenate of the mouse kidney were measured. Superoxide radical generation was enhanced after exposing mice to azide/100% O_2, and reached to a maximum at 24 h. The elevated activity of cytosolic Cu, Zn-superoxide dismutase by the azid/oxygen treatment was sustained up to 12 h. Mitochondrial Mn-super oxide dismutase was slowly induced by the azide/oxygen treatment and was continuously increased until 72 h of exposing 100% o_2, while treatmet with neither azide nor oxygen alone enhanced the enzyme activity. Change of the catalase activity was not observed in the mouse kidney treated with azide and/or 100% oxygen. Xanthine oxidase activity was markedly decreased by the azide/oxygen treatmet. These reslts suggested that superoxide radicals generated in high oxygen tension were originated mainly from mitochondria, not from xanthine oxidase-catalyzed reaction. Thus, mitochondrial Mn-superoxide dismutase was induced to remove the superoxide radicals effectively.
이진,장현주,강승식,이봉화,곽상택,임해성,정유선,정선화,계세협,주사언 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.3
The enterobiliary fistulas are mostly spontaneous and are caused by biliary disease associated with calculi. Review of many series shows that the most common variety of enterobiliary fistulas is a cholecystoduodenal fistula followed by cholecystocolic, cholecystogastric and choledochoduodenal fistula in that order. But very few cases of choledochocolonic fistulae have been reported. We report a case of choledocholithiasis combined with the absence of gallbladder leading to a choledochocolonic fistula, which was confirmed by endoscopic retrograde cholangiography and abdominal exploration in a 63-year-old male patient with complaint of right upper abdominal pain.