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색소생산 및 색소비생산 Serratia marcescens 배양액에 의한 면역반응항진과 균의 항균제 및 인혈청에 대한 내성
임선영,하대유,김재흔 대한미생물학회 1985 大韓微生物學會誌 Vol.20 No.1
This study was undertaken to assess the susceptibility of pigmented and nonpigmented strains of Serratia marc escens to antibiotics and hurnan sera, and the effect of culture filtrates from pigmented and nonpigmented of Serratia marcescens on humoral and cellular immune responses in mice to thy- mus-depender.t and -indepependent antigens. Humoral immune response was measured by hemaggluti- nin (HA) and hemolysin (HE) to sheep red blood cell (SRBC), and Arthus or antibody response to pol- yvinylpyrrolidone (PVP). The cellular immune response was measured by delayed-type hypersensitivity (DTH) determined by footpad swelling reactin to SRBC. The resistance of pigmented strains of Serratia marcescens to the bactericidal action of heat- inactiv- ated human serum was insignificantly greater than that of nonpigmented strains. However, the pigme- nted strains were significantly more resistant to the bactericidal action of heat-untreated human serum than that of nonpigmented strains. The clinical isolates of Serratia marcescens was also tested for their resistance to several antibiotics, There was no difference between the pigmented and non-pigmented strains in the resistance to carbe- nicillin. However, nonpigmented strains were more resistant to gentamicin, kanamycin and tobramycin than the pigmented strains. The intraperitoneal Administration of culture filtrates from the pigmented or nonpigmented strains into mice caused enhancemented of antibody response to SRBC or PVP, and of DTH to SRBC. Besides, their enhancement of immune responses was more prominent when culture filtrate from the pig- mented strains was administered.
임선영,김지훈 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.1
Synchronous hepatocellular carcinoma (HCC) and cholangiocellular carcinoma (CCC) is type A carcinoma according Allen and Lisa classification which originate from different cell sites but consisting of a uniform cell type (double cancer or separate types). There is only a limited information regarding clinical features, pathologic features, survival outcomes, and prognostic factors due to the rarity of this double primary cancer. Most of the synchronous HCC and CCC patients have underlying liver cirrhosis as a cause of either viral hepatitis B or C and uncommonly alcohol. Synchronous HCC and CCC is difficult to diagnose based on the image studies only and mostly were diagnosed incidentally after resection. We herein report a case of 51-year-old male patient who was referred for the evaluation of the hepatic mass and ascites. The patient was a chronic alcoholic with negative viral marker. Initially multiple HCCs was diagnosed according to the dynamic liver CT and dynamic MRI and the patient was treated with liver transplantation but histopathologic findings revealed synchronous HCC and CCC. To our knowledge, only one brief case report of alcoholic liver cirrhosis with HCC finally diagnosed as synchronous HCC and CCC after liver transplant had been reported. Therefore this is the first case report of synchronous HCC and CCC which were incidentally found and successfully treated by liver transplanation with image studies and histopathologic findings in more detail.
메주 메탄올 추출물 및 분획물의 항돌연변이 및 인체 암세포 성장 억제 효과
임선영,박건영,이숙희,최재수 한국생명과학회 2007 생명과학회지 Vol.17 No.2
Inhibitory effects of methanol extracts and several solvent fractions from meju on mutagenicity in vitro genotoxicity (SOS chromotest) and growth of human cancer cells (AGS gastric adenocarcinoma and Hep 3B hepatocellular cancinoma cells) were studied. The treatment of meju methanol extracts (100 μg/assay) to SOS chromotest system inhibited N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) induced mutagenicity by 36%. However, the ethylacetate and dichloromethane fractions from meju methanol extracts showed the stronger antimutagenic effects (91% and 91%, respectively) in SOS chromotest. In sulforhodamine B (SRB) assay, the treatments of ethylacetate and dichloromethane fractions (2 mg/assay) significantly inhibited the growth of AGS and Hep 3B cancer cells by 64% and 71%, respectively. These results indicated that meju had inhibitory effects on MNNG in SOS mutagenic system and growth of human cancer cells, suggesting that its antimutagenic effect may be relative to activity of doenjang. 메주의 헥산 및 메탄올 추출물과 그것을 용매로 분획하여 얻어진 디클로로메탄, 에틸아세테이트, 부탄올, 물 분획물들에 의한 SOS chromotest 실험계에서 항돌연변이 효과 및 SRB assay를 이용한 인체 암세포들의 성장 억제 효과에 대하여 검토하였다. SOS chromotest 실험계의 경우, 첨가농도 100 μg/assay에서 메주의 디클로로메탄 및 에틸아세테이트 분획물은 각각 91%, 91%로 MNNG에 대하여 강한 항돌연변이 효과를 나타났다. AGS 인체 위암세포와 Hep 3B 인체 간암세포를 이용하여 항암효과를 실험한 결과, 메주 에틸아세테이트분획물은 첨가농도 200 μg/assay에서 각각 93% 및 91%로 암세포 성장을 크게 저해시켰고 그 저해 효과는 디클롤메탄 분획물보다 더 높았다. 인체 위암세포인 AGS를 이용한 SRB assay을 이용한 억제 효과 실험에서 메주의 에틸아세테이트 분획물은 첨가농도 2 mg/assay에서 인체 위암 및 간암세포의 증식을 각각 64% 및 71%로 억제하여 분획물들 중 가장 높은 저해효과를 보였고 헥산 및 디클로로메탄 분획물은 그 다음으로 억제 효과가 높았다. 이러한 결과는 된장 메탄올 추출물과 그 분획물의 결과와 유사한 경향을 보였으므로 메주와 된장이 여러 종류의 미생물, 곰팡이류와 세균류들에 의해 발효과정을 거치는 동안 원재료인 콩에서는 없었던 혹은 함량이 적은 성분들이 생성되거나 증가되어 항암효과를 나타내는 것으로 추정되어 진다.