Abstract
Alpha polyesters such as poly(L-lactide) and poly(glycolide) are biodegradable materials used in fracture fixation and they need to be assessed for problems associated with their degradation products. This study has compared cell responses to low molecular weight poly(L-lactide) particles, lactate monomer, poly(glycolide) particles and glycolic acid at cytotoxic and sub-cytotoxic concentrations. Murine macrophages were cultured in vitro and the release of lactate dehydrogenase (LDH), prostaglandin E2 (PGE2 and interleukin-1 alpha IL-1α was measured following the addition of particles or monomer. Experiments revealed that both the poly(L-lactide) and poly(glycolide) particles gave rise to dose dependent increases in LDH release and an increase in IL-1α and PGE2 release. Comparisons of the poly(L-lactide) particles to the poly(glycolide) particles did not reveal any differences in their stimulation of LDH, IL-1α and PGE2 release. The lactate and glycolate monomers did not increase PGE2 or IL-1α release above control levels. There was no difference in biocompatibility between the poly(L-lactide) and poly(glycolide) degradation products both in particulate and monomeric form.
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Dawes, E.N., Clarke, S.A., Lamanuzzi, N. et al. The response of macrophages to particles of resorbable polymers and their degradation products. Journal of Materials Science: Materials in Medicine 14, 271–275 (2003). https://doi.org/10.1023/A:1022892925877
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DOI: https://doi.org/10.1023/A:1022892925877