Abstract
In order to incorporate ofloxacin within liposomes, the reverse-phase evaporation technique was carried out. The liposome lipid matrix consisted of dipalmitoylphosphatidylcholine-cholesterol-dihexadecylphosphate (4: 3:4 molar ratio). The liposome formulation presented a mean size of 185 +/- 31 nm and had an encapsulation capacity of 5.3 microliters/mumol. The liposome formulation was able to deliver ofloxacin into McCoy cells in a greater amount (2.6-fold) than the free drug, improving antibiotic accumulation.
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- Bedard J., Wong S., Bryan L. E. Accumulation of enoxacin by Escherichia coli and Bacillus subtilis. Antimicrob Agents Chemother. 1987 Sep;31(9):1348–1354. doi: 10.1128/aac.31.9.1348. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Benita S., Poly P. A., Puisieux F., Delattre J. Radiopaque liposomes: effect of formulation conditions on encapsulation efficiency. J Pharm Sci. 1984 Dec;73(12):1751–1755. doi: 10.1002/jps.2600731223. [DOI] [PubMed] [Google Scholar]
- Bonati M., Kanto J., Tognoni G. Clinical pharmacokinetics of cerebrospinal fluid. Clin Pharmacokinet. 1982 Jul-Aug;7(4):312–335. doi: 10.2165/00003088-198207040-00003. [DOI] [PubMed] [Google Scholar]
- Chiou W. L., Riegelman S. Oral absorption of griseofulvin in dogs: increased absorption via solid dispersion in polyethylene glycol 6000. J Pharm Sci. 1970 Jul;59(7):937–942. doi: 10.1002/jps.2600590703. [DOI] [PubMed] [Google Scholar]
- Desiderio J. V., Campbell S. G. Intraphagocytic killing of Salmonella typhimurium by liposome-encapsulated cephalothin. J Infect Dis. 1983 Sep;148(3):563–570. doi: 10.1093/infdis/148.3.563. [DOI] [PubMed] [Google Scholar]
- Desiderio J. V., Campbell S. G. Liposome-encapsulated cephalothin in the treatment of experimental murine salmonellosis. J Reticuloendothel Soc. 1983 Oct;34(4):279–287. [PubMed] [Google Scholar]
- Forsgren A., Bellahsène A. Antibiotic accumulation in human polymorphonuclear leucocytes and lymphocytes. Scand J Infect Dis Suppl. 1985;44:16–23. [PubMed] [Google Scholar]
- Fresta M., Puglisi G., Di Giacomo C., Russo A. Liposomes as in-vivo carriers for citicoline: effects on rat cerebral post-ischaemic reperfusion. J Pharm Pharmacol. 1994 Dec;46(12):974–981. doi: 10.1111/j.2042-7158.1994.tb03252.x. [DOI] [PubMed] [Google Scholar]
- Gabizon A. Liposomes as a drug delivery system in cancer chemotherapy. Horiz Biochem Biophys. 1989;9:185–211. [PubMed] [Google Scholar]
- Gabizon A., Papahadjopoulos D. Liposome formulations with prolonged circulation time in blood and enhanced uptake by tumors. Proc Natl Acad Sci U S A. 1988 Sep;85(18):6949–6953. doi: 10.1073/pnas.85.18.6949. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hand W. L., King-Thompson N. L. Contrasts between phagocyte antibiotic uptake and subsequent intracellular bactericidal activity. Antimicrob Agents Chemother. 1986 Jan;29(1):135–140. doi: 10.1128/aac.29.1.135. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hirai K., Aoyama H., Irikura T., Iyobe S., Mitsuhashi S. Differences in susceptibility to quinolones of outer membrane mutants of Salmonella typhimurium and Escherichia coli. Antimicrob Agents Chemother. 1986 Mar;29(3):535–538. doi: 10.1128/aac.29.3.535. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Horwitz M. A., Silverstein S. C. Legionnaires' disease bacterium (Legionella pneumophila) multiples intracellularly in human monocytes. J Clin Invest. 1980 Sep;66(3):441–450. doi: 10.1172/JCI109874. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jacobs R. F., Wilson C. B. Intracellular penetration and antimicrobial activity of antibiotics. J Antimicrob Chemother. 1983 Oct;12 (Suppl 100):13–20. doi: 10.1093/jac/12.suppl_c.13. [DOI] [PubMed] [Google Scholar]
- Mandell G. L. Interaction of intraleukocytic bacteria and antibiotics. J Clin Invest. 1973 Jul;52(7):1673–1679. doi: 10.1172/JCI107348. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Notarianni L. J., Jones R. W. Method for the determination of ofloxacin, a quinolone carboxylic acid antimicrobial, by high-performance liquid chromatography. J Chromatogr. 1988 Oct 14;431(2):461–464. doi: 10.1016/s0378-4347(00)83119-9. [DOI] [PubMed] [Google Scholar]
- Prokesch R. C., Hand W. L. Antibiotic entry into human polymorphonuclear leukocytes. Antimicrob Agents Chemother. 1982 Mar;21(3):373–380. doi: 10.1128/aac.21.3.373. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Richardson V. J. Liposomes in antimicrobial chemotherapy. J Antimicrob Chemother. 1983 Dec;12(6):532–534. doi: 10.1093/jac/12.6.532. [DOI] [PubMed] [Google Scholar]
- Scherphof G. L., Daemen T., Spanjer H. H., Roerdink F. H. Liposomes in chemo- and immunotherapy of cancer. Lipids. 1987 Nov;22(11):891–896. doi: 10.1007/BF02535550. [DOI] [PubMed] [Google Scholar]
- Wolfson J. S., Hooper D. C. The fluoroquinolones: structures, mechanisms of action and resistance, and spectra of activity in vitro. Antimicrob Agents Chemother. 1985 Oct;28(4):581–586. doi: 10.1128/aac.28.4.581. [DOI] [PMC free article] [PubMed] [Google Scholar]
- al-Awadhi H., Stokes G. V., Reich M. Inhibition of Chlamydia trachomatis growth in mouse fibroblasts by liposome-encapsulated tetracycline. J Antimicrob Chemother. 1992 Sep;30(3):303–311. doi: 10.1093/jac/30.3.303. [DOI] [PubMed] [Google Scholar]