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Detoxification of poly(methyl methacrylate) bone cement by natural antioxidant intervention
Author(s) -
Choppadandi Mounika,
More Namdev,
Kapusetti Govinda
Publication year - 2019
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.36785
Subject(s) - antioxidant , bone cement , monomer , cement , materials science , methyl methacrylate , radical , methacrylate , osteoblast , nuclear chemistry , organic chemistry , chemistry , biochemistry , polymer , composite material , in vitro
Poly(methyl methacrylate) (PMMA) bone cement is the most widely used grouting material in the joint arthroplasties and vertebroplasties. The present investigation has been carried out to scavenge the radicals and monomer by addition of an antioxidant to minimize the toxicity of bone cement (BC). The in silico studies were employed to determine the potent natural antioxidant at physiological conditions. The antioxidant methionine demonstrated a strong binding affinity with free radicals and methyl methacrylate (MMA) monomer than cysteine. The designated amount of methionine was optimized by various assay methods and >2% methionine shows strong scavenging capacity in BC. Moreover, the antioxidant‐loaded BC (ABC) demonstrated similar handling, physicochemical and mechanical properties to pristine bone cement. Significantly, the developed formulation shows superior biological characteristics such as cell proliferation (2 ± 1 BC and 6 ± 1 ABC), adhesion (0.32 ± 0.02 BC and 0.54 ± 0.01 ABC), and cell viability (81 ± 2% BC and 93 ± 1% ABC) toward human osteoblast‐like cells (MG‐63). Therefore, the novel antioxidant bone cement is a potential candidate for various orthopedic applications to eliminate the adverse effects, related to residual toxic radical and monomer in bone cement.