ArticleAntimicrobial agents and chemotherapy1996
Enhanced intramacrophage activity of resorcinomycin A against Mycobacterium avium-Mycobacterium intracellulare complex after liposome encapsulation.
Article in Antimicrobial agents and chemotherapy, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Liposome-Encapsulated Antibiotics for the Therapy of Mycobacterial Infections.Antibiotics (Basel, Switzerland) · 2025Review
- Preclinical Models of Nontuberculous Mycobacteria Infection for Early Drug Discovery and Vaccine Research.Pathogens (Basel, Switzerland) · 2020Review
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Authors and funding
4 authors.
Funding
Abstract
The activities of free and liposomal resorcinomycin A against Mycobacterium avium-Mycobacterium intracellulare complex (MAC) grown in broth and in murine peritoneal macrophages were evaluated. Liposomal resorcinomycin A was composed of dimyristoyl phosphatidylcholine and phosphatidylinositol at a molar ratio of 9:1. Both free resorcinomycin A and liposomal resorcinomycin A showed no toxicity to macrophages at concentrations up to 50 micrograms/ml, as determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) reduction assay. Minimal inhibitory concentrations of free resorcinomycin A and liposomal resorcinomycin A in broth were 6 and 12 micrograms/ml, respectively, as determined by the MTT colorimetric microassay. In macrophages, liposomal resorcinomycin A caused significantly higher intramacrophage antimycobacterial activity than the free form of the drug. At doses ranging from 6 to 50 micrograms/ml, liposomal resorcinomycin A caused 50 to 93% MAC growth inhibition, respectively (as determined by CFU), while free resorcinomycin A was associated with 33 to 62% MAC growth inhibition, respectively, 3 days after drug treatment. In addition, antimycobacterial activity of liposomal resorcinomycin A in macrophages was maintained 7 days after treatment, whereas the activity of free resorcinomycin A was reduced to negligible 3 days after treatment. In summary, liposome encapsulation of resorcinomycin A resulted in significant enhancement of antibacterial activity against intramacrophagic MAC infection.
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