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namujila

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[交流] 求助英语摘要翻译汉文

Abstract
Usnea barbata and its major constituent usnic acid are potent antimicrobial agents. Here, we have investigated anti-inflammatory
properties of an U. barbata extract (UBE) containing 4% usnic acid in an ultraviolet-B (UVB) model with HaCaT keratinocytes.
UVB irradiation induced PGE2 production and COX-2 expression in a time and dose-dependent manner. UBE inhibited PGE2 production
at a half-maximal concentration of 60 lg/ml (2.4 lg/ml usnic acid) that did not affect the UVB-induced upregulation of COX-2,
suggesting an effect on enzyme activity rather than on protein expression. The inhibition of PGE2 production by UBE was not due
to cytotoxicity. Besides its known antimicrobial properties, UBE displays specific UVB protective effects that might be useful in the topical
treatment of UVB-mediated inflammatory skin conditions.
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568995231

新虫 (著名写手)


namujila(金币+10, 翻译EPI+1): 谢谢!多次关照 2011-03-23 22:05:13
  文摘
  Usnea barbata usnic酸及其主要成分是有效抗菌药物。在这里,我们就已经在研究抗炎作用
  一个美国的性质barbata含4%提取(宇usnic酸在一个台湾HaCaT(UVB)模型与角质形成细胞直接接触。
  UVB照射诱导产生PGE2和COX-2表达在一个时间和存在剂量依赖的方式。宇抑制产生PGE2
  在一个half-maximal浓度的lg / ml(60 / ml usnic 2.4 lg酸),并不影响的COX-2及UVB-induced,
  建议一项影响酶活性,而不是在蛋白表达。抑制产生PGE2的并不是由于发光
  对细胞毒性。除了它已知的抗菌性能、发光显示特定的UVB保护作用,可能会是有用的在这一议题
  UVB-mediated炎性皮肤病的治疗。


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