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장철수 ; 신숙희 김천대학교 2005 김천대학교 논문집 Vol.26 No.-
This study was carried out to investigate effect of lipid metabolism in Viscum album lectin on rats.
장철수 ( Choul Soo Chang ),신숙희 ( Sook Hee Shin ) 대한임상검사과학회 2002 대한임상검사과학회지(KJCLS) Vol.34 No.2
In the present study, the author investigated changes in liver function caused by Viscum album lectin. πle lectin was purified by 0.15 M NaCl extraction, amnonium sulfate precipitation, sepharose 4B affmity chromatography and gel filtration using sephadex 0-150 with plant material from Viscum album collected in Mt. Duk Yui. After 72 h of CC14 iniection (in olive oil, 1:1, 2 mg/kg) there was a significant increase in serum AST and AL T levels relative to the control group. However, treatment. of either Viscum album extracts and purified lectin offered no protection against CC14-induced hepatotoxicity. Histological observation basically supported the resu1t obtained from serum enzyme assay. The livers of rats challenged with CC14 produced a marked increase in cytoplasmic vacuoles and inflammatory cells in number, while the number of necrotic cells and swollen hepatocytes did not change significnatly. Rats administered olive oil alone did not have a change in the normal hepatic architecture. Histological observation of a liver section in rats treated 72 h with either Viscum album extract or purified lectin CC14-induced liver damage showed numbers of cytoplasmic vaculoe and necrotic cells. The numbers of inflammatory cells were, however, increased markedly. πle nurmal hepatic architectural pattem was lost in a Hematoxylin-eosin stain. These results suggest the conc1usion that Viscum album lectin has a physiological effect of hepatotoxicity activator.
이창규(ChangKyou Lee),이승관(SeungGwan Lee),조경진(KyungJin Cho),장철수(ChulSoo Chang),신숙희(SookHee Shin) 고려대학교 보건과학연구소 2006 보건과학논집 Vol.32 No.1
In spite of their demerits the classical methods for item analysis have been used so far without distinct alternatives. However, various innovative item analysis methods using computers were emerging and the analysis methods are still being advanced everyday. In some advanced countries they adopt CAT system in certifying or licensing examinations in the areas of social sciences, natural sciences, engineering and medical sciences. For the CAT executions the test item banking should go side by side with the strict selection of items through the Differential Item Functioning. Since the authors checked the DIF through M-H method and got desirable results, we want to report them here.