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납(Pb)이 생쥐 신장세포에 미토콘드리아 미세구조 및 전자전달계에 미치는 영향
임승섭,유정규,최임순,Lim, Seung-Sub,Yoo, Chang-Kyu,Choe, Rim-Soon 한국현미경학회 1987 Applied microscopy Vol.17 No.2
To investigate the effects of lead on the electron transport system and ultrastructure of mouse kidney mitochondria, various lead acetate concentrations were treated in vitro and respiration rate, enzyme activities were measured. Ultrastructural changes at state IV respiration were also observed. To compare with in vivo experiments, mouse were injected intraperitoneally of 100 mg lead acetate per kg body weight and state IV respiration rate and enzyme activities were measured. Ultrastructure of renal proximal tubular cells were also observed. In in vitro treatement, decreased state IV respiration, decreased enzyme activities, ruptured membranes and inhibition of condensed to orthodox transformation were observed. In in vivo treatment, decreased state IV respiration and decreased enzyme activities were observed after 24 hrs of i.p. injection. Cytochrome c oxidase activity showed twice the inhibition compared to NADH-CoQ reductase activity at 24 hrs. Continuous decreased state IV respiration was observed after 48 and 72 hrs of injection, however, the enzyme activities were increased to control level. Lead-protein complex which probably inhibits the toxic effects of lead appeared. To conclude, dominant effect of lead on the electron transport system appeared at cytochrome c oxidase activity, and the increased enzyme activities may be a result of appearance of lead-protein complex.
Bithyniidae과 패류 치설의 미세구조에 관한 연구
김재진,최임순,임승섭,한규웅,Kim, Jae-Jin,Choe, Rim-Soon,Lim, Seung-Sub,Hahn, Kyu-Woong,Claus, Meier Brook 한국현미경학회 1988 Applied microscopy Vol.18 No.2
The radulae of six species of bithyniid snails, Bithynia striatula, B. tentaculate, B. siamensis, B. leachi, Gabbia misella and G. australis, were observed by SEM. The radular formula of all the bithyniids studied was 2 : 1 : 1 : 1 : 2. The all teeth were multicuspid and the central teeth had numerous basal denticles. The mesocones of the central and lateral teeth were spade or arrow-head shape. The mesocones of the central teeth and the lateral teeth of B. leachi, G. misella and G. australis were slightly larger than the other cusps in contrast of those of the other species. Number of cusp was varied by the specimen and the species.