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. 1996 Nov;40(11):2618–2621. doi: 10.1128/aac.40.11.2618

Treatment of intracellular Mycobacterium avium complex infection by free and liposome-encapsulated sparfloxacin.

N Düzgüneş 1, D Flasher 1, M V Reddy 1, J Luna-Herrera 1, P R Gangadharam 1
PMCID: PMC163586  PMID: 8913475

Abstract

Mycobacterium avium-M. intracellulare complex (MAC) is the most frequent cause of opportunistic bacterial infection in patients with AIDS. Previous studies have indicated that liposome-encapsulated aminoglycosides are highly effective in treating MAC infections in mice. We investigated whether the fluoroquinolone sparfloxacin is effective in treating MAC infection in the murine macrophage-like cell line J774. Sparfloxacin was encapsulated in the membrane phase of multilamellar liposomes composed of phosphatidylglycerol-phosphatidylcholine-cholesterol (1:1:1 molar ratio). MAC-infected macrophages were treated for either 24 h or 4 days with free or liposome-encapsulated sparfloxacin. Treatment with free or liposome-encapsulated sparfloxacin (6 micrograms/ml) for 24 h resulted in the reduction of the growth index to 25 and 30% of that of untreated controls, respectively. When cultures were treated for 4 days, free sparfloxacin reduced the growth index to 6% of that of the untreated control, while liposome-encapsulated sparfloxacin reduced it to 8% of that of the control.

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Selected References

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