4.7 Article

Wrap It! Preventive Antimicrobial Treatment Shows No Negative Effects on Tenocytes and Tendons-A Comprehensive Approach

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JOURNAL OF CLINICAL MEDICINE
卷 12, 期 12, 页码 -

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MDPI
DOI: 10.3390/jcm12124104

关键词

ACL reconstruction; infection; vancomycin; wrap; soaking; tendon; tenocytes

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Although prophylactic use of vancomycin is routinely performed after ACL reconstruction, it may potentially harm the tissue and cells. A comprehensive study was conducted to investigate its effect on tendon tissue and isolated tenocytes, and the results demonstrated that vancomycin at clinically used concentrations had no negative impact on cell viability, gene expression, histology, and mechanical integrity.
Although the rate of infection after the reconstruction of a ruptured anterior cruciate ligament (ACL) is low, prophylactic incubation of the graft with vancomycin (Vanco-wrap or vancomycin soaking) is routinely performed. A cytotoxic effect of vancomycin is reported for several cell types, and the prophylactic treatment might prevent infection but harm the tissue and cells. Aim: A comprehensive study was performed to investigate the effect of vancomycin on tendon tissue and isolated tenocytes using cell viability, molecular and mechanical analysis. Material and methods: Rat tendons or isolated tenocytes were incubated in increasing concentrations of vancomycin (0-10 mg/mL) for different times, and cell viability, gene expression, histology and Young's modulus were analyzed. Results: The clinically used concentration of vancomycin (5 mg/mL for 20 min) had no negative effect on cell viability in the tendons or the isolated tenocytes, while incubation with the toxic control significantly reduced cell viability. Increasing the concentration and prolonging the incubation time had no negative effect on the cells. The expression of Col1a1, Col3a1 and the tenocyte markers mohawk, scleraxis and tenomodulin was not affected by the various vancomycin concentrations. The structural integrity as measured through histological and mechanical testing was not compromised. Conclusion: The results proved the safe application of the Vanco-wrap on tendon tissue. Level of evidence: IV.

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