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Preparation and Characterization of Nanoliposomes for the Entrapment of Bioactive Hydrophilic Globular Proteins
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Liposome-encapsulated antibiotics

Isam I Salem1, Diana L Flasher, Nejat Düzgüneş

  • 1Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, Granada, Spain.

Methods in Enzymology
|February 22, 2005
PubMed

Insights

Liposome encapsulation enhances antibiotic efficacy against Mycobacterium avium-intracellulare complex (MAC) infections in cells and animal models. This study evaluates various liposomal antibiotics, including sparfloxacin and azithromycin, for improved MAC treatment.

Area of Science:

  • Pharmacology and Drug Delivery
  • Microbiology and Infectious Diseases
  • Biotechnology and Nanomedicine

Background:

  • Liposome encapsulation is a promising strategy to improve antibiotic delivery and efficacy.
  • Mycobacterium avium-intracellulare complex (MAC) infections pose significant challenges, particularly in immunocompromised individuals.
  • Current treatments for MAC infections often face limitations in efficacy and require prolonged therapy.

Purpose of the Study:

  • To evaluate the efficacy of various antibiotics encapsulated in liposomes against MAC infections.
  • To investigate the potential of pH-sensitive liposomes for enhanced drug delivery in MAC disease models.
  • To explore liposomal formulations of antibiotics for treating MAC and other mycobacterial infections.

Main Methods:

  • Incorporation of antibiotics (amikacin, streptomycin, ciprofloxacin, sparfloxacin, clarithromycin) into diverse liposomal formulations.
  • In vitro evaluation of liposomal antibiotic efficacy against MAC in macrophage cell cultures.
  • In vivo assessment using the beige mouse model of MAC disease and studies with Mycobacterium tuberculosis models.

Main Results:

  • Liposomal encapsulation demonstrated enhanced efficacy of tested antibiotics against MAC infections.
  • pH-sensitive liposomes incorporating sparfloxacin or azithromycin showed promising results in MAC models.
  • Studies with other antibiotics (rifampicin, isoniazid, etc.) in liposomal form were summarized, indicating broad applicability.

Conclusions:

  • Liposome-encapsulated antibiotics represent a viable strategy to improve treatment outcomes for MAC infections.
  • The development of targeted liposomal drug delivery systems offers a promising avenue for combating mycobacterial diseases.
  • Further research into liposomal antibiotic formulations could lead to more effective therapies for challenging infections.

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