Sustained release of isoniazid in vivo from a single implant of a biodegradable polymer
1991
Abstract In order to solve the problem of poor patient compliance, attempts were made to prolong the bioavailability of anti mycobacterial drugs after a single administration. A single implant of polylactic-co-glycolic acid (PLGA) co-polymer containing isoniazid ensured its sustained release up to 6 weeks. The levels are comparable with those obtained from daily doses. Homogenates of liver and lungs from animals killed at 6 weeks after a single implant showed high antimycobacterial activity against Mycobacterium tuberculosis . Sera from the implant and daily dose group animals showed no significant difference in renal, hepatic and haematological parameters. The implant caused no local or systemic toxicity.
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