中国药物应用与监测
中國藥物應用與鑑測
중국약물응용여감측
CHINESE JOURNAL OF DRUG APPLICATION AND MONITORING
2014年
2期
85-87,88
,共4页
土槿乙酸B(PLAB)%高效液相色谱法%白色念珠菌%麦角甾醇
土槿乙痠B(PLAB)%高效液相色譜法%白色唸珠菌%麥角甾醇
토근을산B(PLAB)%고효액상색보법%백색념주균%맥각치순
Pseudolaric acid B (PLAB)%HPLC%Candida albicans%Ergosterol
目的:研究土槿乙酸B(PLAB)的体外抗真菌活性和对白色念珠菌细胞膜中麦角甾醇生物合成的影响。方法:采用微量液体稀释法研究PLAB的体外抗白色念珠菌、新生隐球菌、絮状表皮癣菌的活性。将白色念珠菌经不同浓度PLAB及氟康唑作用28 h后,经过皂化、提取未皂化脂,采用高效液相色谱法测定其麦角甾醇的含量变化。结果:PLAB对白色念珠菌、新生隐球菌、絮状表皮癣菌这三株菌株的MIC50分别为16、32、16μg·mL-1。PLAB能使白色念珠菌中的麦角甾醇含量下降(P<0.05),且含量变化呈明显的剂量依赖性。结论:PLAB具有较强的抗真菌作用,通过抑制真菌的麦角甾醇生物合成而发挥高效抗真菌活性。
目的:研究土槿乙痠B(PLAB)的體外抗真菌活性和對白色唸珠菌細胞膜中麥角甾醇生物閤成的影響。方法:採用微量液體稀釋法研究PLAB的體外抗白色唸珠菌、新生隱毬菌、絮狀錶皮癬菌的活性。將白色唸珠菌經不同濃度PLAB及氟康唑作用28 h後,經過皂化、提取未皂化脂,採用高效液相色譜法測定其麥角甾醇的含量變化。結果:PLAB對白色唸珠菌、新生隱毬菌、絮狀錶皮癬菌這三株菌株的MIC50分彆為16、32、16μg·mL-1。PLAB能使白色唸珠菌中的麥角甾醇含量下降(P<0.05),且含量變化呈明顯的劑量依賴性。結論:PLAB具有較彊的抗真菌作用,通過抑製真菌的麥角甾醇生物閤成而髮揮高效抗真菌活性。
목적:연구토근을산B(PLAB)적체외항진균활성화대백색념주균세포막중맥각치순생물합성적영향。방법:채용미량액체희석법연구PLAB적체외항백색념주균、신생은구균、서상표피선균적활성。장백색념주균경불동농도PLAB급불강서작용28 h후,경과조화、제취미조화지,채용고효액상색보법측정기맥각치순적함량변화。결과:PLAB대백색념주균、신생은구균、서상표피선균저삼주균주적MIC50분별위16、32、16μg·mL-1。PLAB능사백색념주균중적맥각치순함량하강(P<0.05),차함량변화정명현적제량의뢰성。결론:PLAB구유교강적항진균작용,통과억제진균적맥각치순생물합성이발휘고효항진균활성。
Objective: To study antifungal activity in vitro and the effect of pseudolaric acid B (PLAB) on ergosterol biosynthesis in the cell membranes of Candida albicans. Methods:Microdilution method was used to determine the susceptibility of fungus (Candida albicans, Cryptococcus neoformans, Epidermophyton floccosum) to PLAB. The Candida albicans were incubated for 28 h with different concentrations of PLAB and lfuconazole, and the content of ergosterol was detected by HPLC after saponiifcation and extraction. Results:The MIC50 (minimum inhibition concentrations) of PLAB to Candida albicans, Cryptococcus neoformans, Epidermophyton lfoccosum was 16, 32, 16 μg·mL-1 respectively. PLAB could decrease the content of ergosterol (P<0.05) in Candida albicans with a dose-dependent manner. Conclusion:PLAB had remarkable antifungal activity by inhibiting the ergosterol biosynthesis in fungi.