A novel approach for lung delivery of rifampicin-loaded liposomes in dry powder form for the treatment of tuberculosis
| Autor: | S Sarasija, Jagadevappa S Patil, Kshama Devi, V. Kusum Devi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Pulmonary and Respiratory Medicine
Drug Tuberculosis medicine.drug_class media_common.quotation_subject Antibiotics pulmonary delivery Pharmacology rifampicin Pharmacokinetics medicine media_common lcsh:RC705-779 Liposome Lung business.industry nebulization lcsh:Diseases of the respiratory system intra-tracheal instillation medicine.disease Freeze-dried liposomes medicine.anatomical_structure tuberculosis Dry powder Original Article business Rifampicin medicine.drug |
| Zdroj: | Lung India : Official Organ of Indian Chest Society Lung India, Vol 32, Iss 4, Pp 331-338 (2015) |
| ISSN: | 0974-598X 0970-2113 |
| Popis: | Background: Lung administration of antibiotics by nebulization is promising for improved treatment efficiency for pulmonary infections, as it increases drug concentration at sites of infection while minimizing systemic side effects. For poorly soluble molecules like rifampicin, lipid particulate system may improve lung delivery. Materials and Methods: We investigated rifampicin-loaded freeze-dried liposomes. Various formulations were prepared with different drug lipid ratios and one formulation was optimized. Optimized colloidal liposome formulation was freeze-dried and subsequently subjected for various evaluation and characterization parameters such as in-vitro dissolution, in-vitro antitubercular activity, aerodynamic characters, surface morphology, and thermal behavior. The optimized formulation of rifampicin-loaded freeze-dried liposome and free rifampicin was subjected for the in-vivo drug disposition study in Wister rat model by intra-tracheal instillation in comparison with an oral route of administration. Results: The results of pharmacokinetic study for both free drug and the formulation suggested that liposomes released the drug in a controlled manner for a longer period of time. The enhanced efficiency of drug incorporated into liposomes suggested that the delivery of encapsulated drugs to macrophages was more rapid than that of free drug. Conclusion: Therefore, the pharmacokinetic and drug disposition studies provided a sound basis for predicting the successful treatment for tuberculosis. |
| Databáze: | OpenAIRE |
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