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- W2029152215 abstract "After surgical treatment of osteoarticular tuberculosis (TB), it is necessary to fill the surgical defect with an implant, which combines the merits of osseous regeneration and local multi-drug therapy so as to avoid drug resistance and side effects. In this study, a 3D-printed macro/meso-porous composite scaffold is fabricated. High dosages of isoniazid (INH)/rifampin (RFP) anti-TB drugs are loaded into chemically modified mesoporous bioactive ceramics in advance, which are then bound with poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) through a 3D printing procedure. The composite scaffolds show greatly prolonged drug release time compared to commercial calcium phosphate scaffolds either in vitro or in vivo. In addition, the drug concentrations on the periphery tissues of defect are maintained above INH/RFP minimal inhibitory concentrations even up to 12 weeks post-surgery, while they are extremely low in blood. Examinations of certain serum enzymes suggest no harm to hepatic or renal functions. Micro-CT evaluations and histology results also indicate partly degradation of the composite scaffolds and new bone growth in the cavity. These results suggest promising applications of our hierarchical composite scaffold in bone regeneration and local anti-TB therapy after osteoarticular TB debridement surgery." @default.
- W2029152215 created "2016-06-24" @default.
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- W2029152215 date "2015-04-01" @default.
- W2029152215 modified "2023-10-11" @default.
- W2029152215 title "3D-printed hierarchical scaffold for localized isoniazid/rifampin drug delivery and osteoarticular tuberculosis therapy" @default.
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- W2029152215 doi "https://doi.org/10.1016/j.actbio.2015.01.034" @default.
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