Novel methods for the encapsulation of meglumine antimoniate into liposomes
Braz. j. med. biol. res
; 33(7): 841-6, July 2000. tab
Article
in En
| LILACS
| ID: lil-262685
Responsible library:
BR1.1
RESUMO
The antimonial drug, meglumine antimoniate, was successfully encapsulated in dehydration-rehydration vesicles and in freeze-dried empty liposomes (FDELs). High encapsulation efficiencies (from 28 to 58 percent) and low weight ratios of lipids to encapsulated antimony (from 10.15 to 10.3) were achieved. These formulations, contrary to those obtained by conventional methods, can be stored as intermediate lyophilized forms and reconstituted just before use. The efficacy of FDEL-encapsulated meglumine antimoniate was evaluated in hamsters experimentally infected with Leishmania chagasi. A significant reduction of liver parasite burdens was observed in animals treated with this preparation, when compared to control animals treated with empty liposomes. In contrast, free meglumine antimoniate was found to be inefficient when administered at a comparable dose of antimony. This novel liposome-based meglumine antimoniate formulation appears to be promising as a pharmaceutical product for the treatment of visceral leishmaniasis.
Full text:
1
Index:
LILACS
Main subject:
Leishmania donovani
/
Drug Compounding
/
Leishmaniasis, Visceral
/
Liposomes
/
Meglumine
/
Antiprotozoal Agents
Limits:
Animals
Language:
En
Journal:
Braz. j. med. biol. res
Journal subject:
BIOLOGIA
/
MEDICINA
Year:
2000
Type:
Article
/
Project document