J Mycol Med:β-拉帕醌和α-去甲-拉帕醌对白色念珠菌的活力和毒力因子的影响

2018-04-01 MedSci MedSci原创

白色念珠菌是引起人类感染的最主要的真菌病原体,寻找新的治疗策略对其治疗至关重要。本研究旨在评价7种萘醌类化合物(β-拉帕醌,β-去甲-拉帕醌,溴化物-β-拉帕醌,羟基-β-拉帕醌,α-拉帕醌,α-去甲-拉帕醌和去氢-ALPHA-拉杷醌)对氟康唑耐药的白色念珠菌口腔临床分离株的生长的影响,以及这些化合物对哺乳动物细胞活力,酵母的形态发生,生物膜形成和细胞壁甘露糖蛋白可用性的影响。结果显示,所有的化合

白色念珠菌是引起人类感染的最主要的真菌病原体,寻找新的治疗策略对其治疗至关重要。本研究旨在评价7种萘醌类化合物(β-拉帕醌,β-去甲-拉帕醌,溴化物-β-拉帕醌,羟基-β-拉帕醌,α-拉帕醌,α-去甲-拉帕醌和去氢-ALPHA-拉杷醌)对氟康唑耐药的白色念珠菌口腔临床分离株的生长的影响,以及这些化合物对哺乳动物细胞活力,酵母的形态发生,生物膜形成和细胞壁甘露糖蛋白可用性的影响。

结果显示,所有的化合物都能够完全抑制酵母的生长。β-拉帕醌和α-去甲-拉帕醌是对L929和RAW 264.7细胞的细胞毒性较小的化合物。在IC50时,β-拉帕醌抑制92%的形态发生,而用α-非拉帕醌处理酵母细胞则减少了42%的酵母菌-菌丝转换。在50μg/ ml时,β-拉帕醌抑制84%的生物膜形成,而α-正拉帕醌将生物膜形成减少64%。用β-拉帕醌处理酵母细胞使细胞壁甘露糖蛋白可用性降低28.5%,而α-去甲-拉帕醌不能干扰这种毒力因子。

综上所述,该研究结果表明,β-拉帕醌和α-去甲-拉帕醌对氟康唑耐药的白色假丝酵母菌株具有体外细胞毒性,因此或可用于治疗由该真菌引起的感染

原始出处:

Moraes DC, Curvelo JAR, et al., β-lapachone and α-nor-lapachone modulate Candida albicans viability and virulence factors. J Mycol Med. 2018 Mar 26. pii: S1156-5233(17)30379-7. doi: 10.1016/j.mycmed.2018.03.004.

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    2018-04-03 guihongzh
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