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The cytotoxicity of bupivacaine, ropivacaine, and mepivacaine on human chondrocytes and cartilage.

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TLDR
Bupivacaine, ropivacane, and mepvacaine are chondrotoxic in a time-dependent, concentration- dependent, and drug-dependent manner, and analgesic potencies do not directly correlate.
Abstract
BACKGROUND:Intraarticular injections of local anesthetics are frequently used as part of multimodal pain regimens. However, recent data suggest that local anesthetics affect chondrocyte viability. In this study, we assessed the chondrotoxic effects of mepivacaine, ropivacaine, and bupivacaine. We hy

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The knee as a biologic transmission with an envelope of function : A theory : Failed anterior cruciate ligament surgery

TL;DR: In this paper, the authors defined the envelope of function as the range of load that can be applied across an individual joint in a given period without supraphysiologic overload or structural failure.
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Intra-articular treatment of knee osteoarthritis: from anti-inflammatories to products of regenerative medicine.

TL;DR: A systematic literature review regarding intra-articular treatment of knee OA and insight into promising new products of regenerative medicine that may eventually have a substantial effect on treatment is provided.
Journal ArticleDOI

Single-dose local anesthetics exhibit a type-, dose-, and time-dependent chondrotoxic effect on chondrocytes and cartilage: a systematic review of the current literature

TL;DR: The cytotoxic effects of single-dose intra-articular administration of local anesthetics impede chondrocyte metabolism and should be performed only with low concentrations for selected diagnostic purposes and painful joints.
Journal ArticleDOI

The Science of Local Anesthesia: Basic Research, Clinical Application, and Future Directions.

TL;DR: The 2 main research avenues being followed to improve action of local anesthetics are to prolong duration of block, by slow-release formulations and on-demand release, and to develop compounds and combinations that elicit a nociception-selective blockade.
Journal ArticleDOI

Cytotoxicity of local anesthetics on human mesenchymal stem cells in vitro.

TL;DR: Viability rates of MSCs embedded in cartilaginous tissue after chondrogenic differentiation were not reduced by local anesthetic treatment, and all local anesthetics showed detrimental cytotoxic effects on MSC monolayer cultures in a concentration- and time-specific manner.
References
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Journal ArticleDOI

A novel assay for apoptosis. Flow cytometric detection of phosphatidylserine expression on early apoptotic cells using fluorescein labelled Annexin V.

TL;DR: The Annexin V assay offers the possibility of detecting early phases of apoptosis before the loss of cell membrane integrity and permits measurements of the kinetics of apoptotic death in relation to the cell cycle.
Journal Article

Exposure of phosphatidylserine on the surface of apoptotic lymphocytes triggers specific recognition and removal by macrophages.

TL;DR: The data suggest that macrophages specifically recognize phosphatidylserine that is exposed on the surface of lymphocytes during the development of apoptosis, and suggest that apoptotic lymphocytes lose membrane phospholipid asymmetry and expose phosphorus on the outer leaflet of the plasma membrane.
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The role of the chondrocyte in osteoarthritis

TL;DR: Evidence that implicates chondrocyte responses to cytokines in the pathogenesis of OA is focused on and the potential therapeutic applications of these findings are discussed.
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Linkage of chondrocyte apoptosis and cartilage degradation in human osteoarthritis.

TL;DR: Increased chondrocyte apoptosis and proteoglycan depletion are anatomically linked and may be mechanistically related.
Journal ArticleDOI

Human chondrocyte apoptosis in response to mechanical injury.

TL;DR: It is demonstrated that mechanical injury induces chondrocyte apoptosis and release of GAG from the matrix and suggests that a therapeutic window may exist where apoptosis could be inhibited.
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