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Nourseothricin sulfate

CAS No. : 96736-11-7

MCE 站：Nourseothricin sulfate

产品活性：Nourseothricin sulfate (Streptothricin sulfate) 是一种广谱抗生素，可破坏革兰氏阴性菌的外膜，并且是 Fonsecaea pedrosoi 的主要选择性标记物。Nourseothricin sulfate 抑制原核细胞中蛋白质的生物合成，并强烈抑制真核生物如真菌的生长，还可作为细菌，酵母，丝状真菌和植物细胞等多种生物的选择性标记物。

研究领域：Anti-infection

作用靶点：Fungal  |  Bacterial  |  Antibiotic

In Vitro: Escherichia coli resistance to neurosporin can be sensitive to resistant strains by eliminating their outer membrane resistance. The polycationic antibiotic, Nourseothricin, represents a mixture of several Streptothricins, mainly D and F. Obviously, although very slowly, it can pass the outer membrane via the porin pores. It has been shown earlier that Nourseothricin is able to generate some kind of channels into the outer membrane through which it can pass the cell wall. On the other hand, there are indications that resistant strains containing a Nourseothricin-inactivating acetyl transferase possess an additional protecting system, namely a reduced penetrability of the outer membrane.

In Vivo: Nourseothricin is preferentially excreted via kidney and signs of nephrotoxicity can be observed after its administration. Renal handling of Nourseothricin is characterized in experiments on renal cortical slices under various experimental conditions. Following administration in vivo the renal tubular transport system for organic anions (p-aminohippurate, PAH) is not influenced by Nourseothricin. There is a high degree of accumulation of Nourseothricin in renal cortical slices. In contrast to PAH accumulation there is no influence of nitrogen atmosphere, simultaneous administration of PAH, probenecid or trishydroxyaminomethane on Nourseothricin accumulation. Age dependent differences in Nourseothricin accumulation does not exist.

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