Gatifloxacin (AM-1155) 是一种有效的氟

Gatifloxacin  (Synonyms: 加替沙星; AM-1155; BMS-206584; PD135432)

Gatifloxacin (AM-1155) 是一种有效的氟喹诺酮类抗生素 (antibiotic)，具有广谱抗菌活性。

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生物活性    
Gatifloxacin (AM-1155; BMS-206584; PD135432) is a potent fluoroquinolone antibiotic with broad-spectrum antibacterial activity. Gatifloxacin inhibits bacterial type II topoisomerases (IC50=13.8 μg/ml for S. aureus topoisomerase IV) and E. coli DNA gyrase (IC50=0.109 μg/ml)[1]. Gatifloxacin can be used to treat bacterial conjunctivitis in vivo.

体外研究
(In Vitro)    
Gatifloxacin is against S. aureus MS5935 topoisomerase IV, E. coli NIHJ JC-2 DNA gyrase and HeLa cell topoisomerase II with IC50 values of 13.8 μg/ml, 0.109 μg/ml, and 265 μg/ml, respectively[1].
Gatifloxacin is against S. aureus MS5935 topoisomerase IV, E. coli NIHJ JC-2 DNA gyrase and HeLa cell topoisomerase II with MIC values of 0.05 μg/ml, 0.0063 μg/ml, and 122 μg/ml, respectively[1].
Gatifloxacin exhibits antibacterial activities for wild-type strains (MS5935, MS5952, MR5867 and MR6009) the first-, second-, third-, and fourth-step mutants with MIC values of 0.05 to 0.10 μg/ml, 0.20 μg/ml, 1.56 to 3.13 μg/ml, 1.56 to 6.25 μg/ml, and 50 to 200 μg/ml, respectively. Gatifloxacin displays the most potent activity against the second- and third-step mutants (MS5952, MR5867 and MR6009) except for the second-step mutant of strain MS5935[2].
Gatifloxacin has potent activity against norA transformant NY12 (MIC, 0.39 μg/ml)[2].
Gatifloxacin (20-100 μM; 72 hours) significantly decreases insulin content to 60% at Day 1, and continues to be reduced to 50.1% and 44.7% at Day 3 by 20 μM and 100 μM gatifloxacin, respectively[3].

分子量    
375.39

性状    
Solid

Formula    
C19H22FN3O4

CAS 号    
112811-59-3

中文名称    
加替沙星

运输条件    
Room temperature in continental US; may vary elsewhere.

储存方式    
4°C, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)

溶解性数据    
In Vitro: 
DMSO : 2 mg/mL (5.33 mM; Need ultrasonic)

H2O : 1 mg/mL (2.66 mM; Need ultrasonic)

配制储备液    
浓度溶剂体积质量    1 mg    5 mg    10 mg
1 mM    2.6639 mL    13.3195 mL    26.6390 mL
5 mM    0.5328 mL    2.6639 mL    5.3278 mL
10 mM    ---    ---    ---
*
请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month (stored under nitrogen)。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。
 

参考文献

[1]. Takei M, et al. Inhibitory activities of gatifloxacin (AM-1155), a newly developed fluoroquinolone, against bacterial and mammalian type II topoisomerases.Antimicrob Agents Chemother. 1998 Oct;42(10):2678-81.  [Content Brief] [2]. Fukuda H, et al. Antibacterial activity of gatifloxacin (AM-1155, CG5501, BMS-206584), a newly developed fluoroquinolone, against sequentially acquired quinolone-resistant mutants and the norA transformant of Staphylococcus aureus. Antimicrob Agents Chemother. 1998 Aug;42(8):1917-22. [Content Brief] [3]. Yamada C, et al. Gatifloxacin acutely stimulates insulin secretion and chronically suppresses insulin biosynthesis. Eur J Pharmacol. 2006 Dec 28;553(1-3):67-72. Epub 2006 Sep 28.  [Content Brief]