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Article Publish Status: FREE
Abstract Title:

Comparative effects of vitamin C on the effects of local anesthetics ropivacaine, bupivacaine, and lidocaine on human chondrocytes.

Abstract Source:

Braz J Anesthesiol. 2016 Jan-Feb;66(1):29-36. Epub 2015 Oct 9. PMID: 26768927

Abstract Author(s):

Jun Tian, Yan Li

Article Affiliation:

Jun Tian

Abstract:

BACKGROUND: Intra-articular injections of local anesthetics are commonly used to enhance post-operative analgesia following orthopedic surgery as arthroscopic surgeries. Nevertheless, recent reports of severe complications due to the use of intra-articular local anesthetic have raised concerns.

OBJECTIVES: The study aims to assess use of vitamin C in reducing adverse effects of the most commonly employed anesthetics - ropivacaine, bupivacaine and lidocaine - on human chondrocytes.

METHODS: The chondrocyte viability following exposure to 0.5% bupivacaine or 0.75% ropivacaine or 1.0% lidocaine and/or vitamin C at doses 125, 250 and 500μM was determined by LIVE/DEAD assay and annexin V staining. Expression levels of caspases 3 and 9 were assessed using antibodies by Western blotting. Flow cytometry was performed to analyze the generation of reactive oxygen species.

RESULTS: On exposure to the local anesthetics, chondrotoxicity was found in the order ropivacaine

CONCLUSIONS: Vitamin C was observed to effectively protect chondrocytes against the toxic insult of local anesthetics ropivacaine, bupivacaine and lidocaine.

Study Type : Human In Vitro

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Sayer Ji
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