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- W2024561470 abstract "Background: Infiltration of a long-lasting anaesthetic is helpful during the post-operative period. The recently developed local drug delivery system, biodegradable nanoparticles in a thermo-sensitive hydrogel (nanogel system), may possibly provide an extended duration of drugs. Therefore, we evaluated whether prolonged infiltration anaesthesia could be achieved by loading lidocaine into this delivery system. Methods: Thirty male rats were randomized into five groups of six rats each: saline; 2% hydrochloride lidocaine solution; lidocaine-loaded nanogel system and its compositing formulations, namely lido–nano gel; lido–nano; and lidogel. Durations of local anaesthesia with subcutaneously injected agents were measured by tail flick latency tests in a randomized, blind fashion. Results: Lido–nano gel produced effective anaesthesia for 360±113 min, compared with 150±33 min by lidogel, 180±37 min by lido–nano, and 110±45 min by lidocaine solution (P<0.001, means±SD), and elicited complete sensory blockade for 300±114 min, compared with 75±37 min by lidogel, 105±53 min by lido–nano, and 60±33 min by lidocaine solution (P<0.001, means±SD) without severe skin/systemic toxicity. Conclusion: Lidocaine-loaded biodegradable nanoparticles in hydrogel produced prolonged infiltration anaesthesia in rats without severe toxicity, indicating a possible way to develop long-lasting local anaesthetics." @default.
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- W2024561470 date "2009-10-01" @default.
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- W2024561470 title "Long-lasting infiltration anaesthesia by lidocaine-loaded biodegradable nanoparticles in hydrogel in rats" @default.
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- W2024561470 doi "https://doi.org/10.1111/j.1399-6576.2009.02030.x" @default.
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