http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
랫드의 간암 발생과정에서 분리한 자연살해세포의 활성측정 및 특성연구
정자영,이국경,길광섭,이영순,Jeong, Ja-young,Lee, Kuk-kyung,Kil, Jwang-sup,Lee, Yong-soon 대한수의학회 1999 大韓獸醫學會誌 Vol.39 No.1
The purposes of this study were to set up the method of the natural killer(NK) cell activity assay using the flow cytometer and to examine the characteristics and distribution of the NK cell during rat hepatocarcinogenesis. Forty five male 6 week-old specific pathogen free(SPF) Sprague-Dawley rats were randomly divided into three groups. Group I was the non-treated control and given normal diet and water. Group II was treated with diethylnitrosamine(DEN, 200mg/kg, i.p.) and partial hepatectomy. Group III was treated with DEN, partial hepatectomy and 0.05% phenobarbital sodium in water from 3 to 16 weeks. All animals were examined the morphology of the large granular lymphocyte(LGL), the LGL percent of the total lymphocytes and the LGL conjugation rate with YAC-1 cell in peripheral blood, spleen and liver. Moreover, activity of the LGL isolated from peripheral blood lymphocytes was determined using the flow cytometer. As results, LGL were observed in the peripheral blood, spleen and liver. LGL were observed the relatively faintly staining basophilic cytoplasm with granules, and eccentric, often kidney-shaped nuclei in Giemsa stain. Its size was $11{\sim}13{\mu}m$. LGL percentage of the isolated lymphocytes in peripheral blood, spleen and liver were 1.8~2.3%, 1.3~1.4% and 0.87~0.99%, respectively. LGL conjugation rate with YAC-1 cell was shown to be peripheral blood(9.3~10.3 %) > spleen(7.7~8.7%) > liver(5.6~7.0%). The activity of the LGL isolated from peripheral blood lymphocytes in Group I, II and III was 33.7%, 30.5% and 35.4%, respectively. However, all values were not significantly between groups.
Opportunity for Initiation of an Environmental Health Program in Korea
Oh, Hye Young,Au, William W.,Heo, Moon Young,Kil, Kwang Sup,Chung, Won Sang,Huh, Keun 영남대학교 약품개발연구소 2001 영남대학교 약품개발연구소 연구업적집 Vol.11 No.-
Cigarette smoking and lung cancer will be used as a model to demonstrate the need to address genetic and environmental risk factors for cancer in Korea. The information can be used to implement precise cancer prevention programs. Development of an environmental health program with emphasis on genetic susceptibility will not only provide fundamental information regarding the genetic basis of human disease but will also be useful for reducing disease burden in the population and for advancing patient care. Therefore, this is a unique opportunity for Korea to initiate an environmental health program with a focus on cancer susceptibility and prevention. With this program, a new generation of skillful scientists will be produced in Korea who will be able to interpret and use the buman genome data for expanding the frontier of medicine.
아리스톨로크산 함유 생약제에 대한 안전성평가연구 : 3개월간 반복투여독성시험을 통한 신장독성평가
황명실,박미선,문지영,이지선,염영나,이효민,신동환,강진석,윤은경,최미나,육미영,장동덕,길광섭,김승희,양기화 식품의약품안전청 2001 식품의약품안전청 연보 Vol.5 No.-
본 실험에서는 아리스톨로크산을 함운하고 있는 생약제중 하나인 마두령(.4risfoforfioe JTurruf)의 90일 반복투여독성시헌을 실f,」하였다. 마두령에서 아리스톨로크산을 정량분석한 결과 마두령 단일 건조븐말의 경운 2.112mg/g, 잉상에서 처방되고 있는 마든령복방 (마두령외 9가지 생약제 복합처방) 건조분말꼭 경무에는 0.066m9/5으로 각각 검출되었다. 본 실험에서 용량설정은 마두령 처리군 (저용량 군; 21.3m9/k9/day (임상용량), 중용량군; 2t3mgfg/day, 고용량군; 2430mg딘g b.w./day), 마두령복방 처리군 (427mg/kg b.w./da?; 임상용량) 및 positive control (아리스톨로크산) 처리군 (저용량군;0.05mgag/da17, 중용량군; 0.Smg/kg/day, 고용량군; 5mg./kg/dal·1으료 하여 랫드에게 경구투여하였다. 마두령단방 처궈근 및 마두령복방 처리군에서 저용량군과 중응량군에서는 잉상관찰 및 생화학적 분석에서 패조군과 유의적인 차이가 없었다. 그러나 마두령단방 고용량근에서는 간, 신장의 상대적인 무계가 증가되었고, 신장의 유두이행상피증식 및 암종이 관찰되었으며, 위에서는 편평세포암종이 관찰되었다. 하자만 간손상이나 간암은 유발하지는 않는 것으로 판단되었다. 결론끌으로 본 실험의 결과에서는 아리스톨로크산 함유 생약제인 마두령이 임상용량인 저응량 처리군에서는 독성을 나타내지 않았으나, 고용쏭으로 장기 복용시켰을 깅우 설치류의 전위부위 및 신장에서 독성이 있음을 알 수 있었다. Chines herbs nephropathy (CHN) has been described in young women who had taken a slimming pills containing some chines herbs. Aristolochic acid (AA), suspected substance as the causal factor of CHN, is known a carcinogen. The Aristolochiae fructus (fruit of Aristolochia contorta) was used in Korean Traditional Medicine consists of appropriate amounts of mixed natural products. Subchronic toxicity of A. furctus containing aristolochic acid was investigated in SD rats. The body weight and clinical signs were observed after orally administration of A. futctus at doses of 21.2, 213, and 2130 mg/kg/day; mixture (including 9 other herbs) at dose of 427 mg/kg/day; aristolochic aicd (Ⅰ+Ⅱ) at doses of 0.05, 0.5, and 5 mg/kg/day for 3 months. At the end of the treatment, high dose treated animals revealed a deficit in final body weight about 25% compared with that of control. Organ weights of kidney, liver, testis, or ovary were increased with dose dependent manner. No changes considered to be due to the administration of A. furctus, mixture or aristolochic acid were in hematological and clinical study. However, significant changes at histopathological study of kidney and stomach were boserved in high-dose treated groups. In conclusion, for human health safety it needs appropriate regulatory actions regarding the use of natural herbal medicines known or suspected of containing aristolochic acid.
Seo, Kyung Won,Park, Mi Jung,Park, Chang Won,Kim, Jun Gyou,Lee, Yoon Sook,Kim,Tae Wan,Song, Yeon Jung,Kim, Sang Geon,Lee, Sun Hee,Kim, Ju Il,Kil, Kwang Sup 식품의약품안전청 1998 식품의약품안전청 연보 Vol.2 No.-
Tobacco smoke condensate (TSC) has been reported to be carcinogenic to several animal species and include a nom'her of tumor initiators and tumor Promot☞rs.3-Hydroxypyridine (3-PfOH ), asignificant constituent of tobacco smoke, has been shown to induce the cytochrome P4S02El. In thisstudy we have investigated the influence of 3-PyOH on the activities of hepatic cytechromes P4SOuonooxygenases 1p450s) and UDP-glucuronyltransferase (UDP-GT), sulfotransferase (57) and gluts-thioue-5-transferase (GST) in male Sprague-Dawley rats. and compared with effect of TSC on metabo-lizing enBymes in rats hep,atocytes. We also examined if 3-PyOH and TSC would change the toxificationof acetaminophen (AA) through modulation of metaboliaing eazymes.3-PyOH (2mmo1/kg, p.o., 5 days)significantly increased the hepatic P4501Al and eST activity to 1.5 fold and 1.3 fold of control,respectivety. Treatment of TSC (250#g/m f, 2 days) dramatically enhanced the activity of PfSOIAl to7.5 fotd of control in rats hepatocytes. Smaller, but significant increase was observed with the activityof P4501A2(1.6 fold of control) in TSC-treated hepatocytes. After pretreatment of 3-PyOH (2mmo1/kg,p.o.5 days) iB ICR mice, potentiation of hepatotoricity by AA (400mg/kg, i.p., 24 hr) tras observed bymeasuring serum ALT activities. In rats hepatocytes, cytoteficity of AA was caused by pretreatmentwith TSC (250#g/mf,2 days) at non-cytotoxic concentration (ImMf. These results indicate that both of3-PyOH.and .?SC are potent inducers of PfSOIAl, but have lift)e effect on the phase rl metabolizing en-zymes. Moreover, potentiation of AA toxicity by pretreatments of 3-PyOH or TSC may be related to in-ductioa of Pfsos.