| Bioactivity | Gatifloxacin sesquihydrate (AM-1155; BMS-206584; PD135432) is a potent fluoroquinolone antibiotic with broad-spectrum antibacterial activity. Gatifloxacin sesquihydrate 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 sesquihydrate can be used to treat bacterial conjunctivitis in vivo. |
| Invitro | Gatifloxacin sesquihydrate 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 sesquihydrate 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 sesquihydrate 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 sesquihydrate 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 sesquihydrate has potent activity against norA transformant NY12 (MIC, 0.39 μg/ml)[2].Gatifloxacin sesquihydrate (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 sesquihydrate, respectively[3]. |
| In Vivo | Gatifloxacin sesquihydrate (subcutaneous injection; 100 mg/kg; 3 times a day; 30 days) significantly decreases the number of lesions in mouse footpad with Nocardia brasiliensis[4]. Animal Model: |
| Name | Gatifloxacin sesquihydrate |
| CAS | 180200-66-2 |
| Formula | C19H22FN3O4.3/2H2O |
| Molar Mass | 402.43 |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | Please store the product under the recommended conditions in the Certificate of Analysis. |
| Reference | [1]. Takei M, et al. Inhibitory activities of Gatifloxacin mesylate (AM-1155), a newly developed fluoroquinolone, against bacterial and mammalian type II topoisomerases.Antimicrob Agents Chemother. 1998 Oct;42(10):2678-81. [2]. Fukuda H, et al. Antibacterial activity of Gatifloxacin mesylate (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. [3]. Yamada C, et al. Gatifloxacin mesylate acutely stimulates insulin secretion and chronically suppresses insulin biosynthesis. Eur J Pharmacol. 2006 Dec 28;553(1-3):67-72. Epub 2006 Sep 28. [4]. Daw-Garza A, et al. In vivo therapeutic effect of Gatifloxacin mesylate on BALB/c mice infected with Nocardia brasiliensis.Antimicrob Agents Chemother. 2008 Apr;52(4):1549-50. |
Gatifloxacin sesquihydrate
CAS: 180200-66-2 F: C19H22FN3O4.3/2H2O W: 402.43
Gatifloxacin sesquihydrate (AM-1155; BMS-206584; PD135432) is a potent fluoroquinolone antibiotic with broad-spectrum an
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