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Ethionme 長期技與가 生體에 미치는 影響에 關한 病理學的 硏究
鄭檜敎,洪錫宰 慶北大學校 醫科大學 1970 慶北醫大誌 Vol.11 No.1
The author studied morphological changes of various organs in albino rats of Sprague-Dowley strains, weighing between 170 to 230gm, fed with basal diet (18% protein)and additioal 0.25% D-L ethionine for 6 and 9 months, respectively; and the following results were obtained: 1) The main lesions in the liver were fatty changes, necrosis, regenerative changes, appearance of atypical liver cells and hepatoma-like nodule; and marked proliferations of oval ducts and connective tissue (cholangiofibrosis), and appearance of cholangioma-like nodules. Theses findings were more pronounced in 9-mon thgroup than in 6-month-group. 2) The tumor-like lesions have not been developed in 6-month-group while in 9-month-group, the hepatoma-like nodules were identified in 4 out of 24 albino rats (16.7%), and cholangioma-like nodules were noted in 10 out of 24 rats (42.7%). These tumor-like nodules showed malignant characteristics histologically but no evidence of biological malignancy such as distant metastases. 3) The 9-month-group showed marked shrinkage and fibrosis of glomeruli and necrosis of proximal convoluted tubules, and there was noted a mild degree of regenerative changes in tubular epithelium of the kidney. 4) The spleen showed atrophic changes in white pulp. The red pulp revealed a pulp cell hyperplasia and marked infiltration of plasmatoid cell. The lymphnodes showed atrophic changes of follicles and marked plasma cell infiltrations. 5) The testis showed marked atrophic changes in seminifernus tubules of 3 or 4 degree by Kaufman's grading. 6) The stmach revealed a definite degenerations of chief cells while the parietal cells were intact. The salivary gland and pancreas showed atrophic and destructive changes in acinar cells and intercalated ducts.
鄭檜敎 경북대학교 의학연구소 1965 慶北醫大誌 Vol.6 No.1
This experiment was designed to find out whether or not the cardioplegic agents, potassium citrate, pot. -citrate with mag. -sulfate and acetylcholine, are injurious to the cardiac tissue, and to compare the tissue responces to these agents. The experiment was carried out in seven dogs. Through bilateral thoracotomy, both atrial appendages were exposed for a short period. The left appendage was used as a control while the right served for experimental pouch which was filled with cardioplegic agent, left in there for 20 to 30 minuites on an average. The appendages were removed after 4 to 6 days and studied microscopically. Through this experiment following results were obtained; 1.Conc. K-citrate (25%) caused sevare myocardial necrosis and degeneration. 2.Diluted K-citrate (2.5%) caused a less severe myocardial reaction than that of conc. one. 3.The atrial pouch in which 2.46% K-citrate with 0.81% Mg-sulfate had been placed did not show any difference comparable with that found in 2.5% K-citrate. 4.Acetylcholine caused atrophy and some degeneration in myocardium. 5.No considerable differences in accordances with applied time of the agent, 20 and 30 minuites respectively, were recognized. These findings suggest that serious injury to the dogs heart may occur when it is exposed to the cardioplegic agent that contains potasssium citrate.
鄭東奎,鄭檜敎,芮學聖,鄭相震 경북대학교 의학연구소 1969 慶北醫大誌 Vol.10 No.2
Eighty-seven hundred and sixty five surgical specimens which had been diagnosed as tumor histologically from January 1953 to December 1967 at Medical General Laboratory, were studied statistcally. The most common benign tumor was neurofibroma. The most common malignancy in adult was lymphosarcoma. The next common malignency was tumor arising from stomach origin.