Modified Magnesium Hydroxide Nanoparticles Inhibit the Inflammatory Response to Biodegradable Poly(lactide-co-glycolide) Implants
- Modified Magnesium Hydroxide Nanoparticles Inhibit the Inflammatory Response to Biodegradable Poly(lactide-co-glycolide) Implants
- 정윤기; 이유진; 박광숙; Chang Hun Kum; Wooram Park; So Young Chun; Youngjin Cho; Young Joon Hong; Dong June Ahn; Byung-Soo Kim; Tae Gyun Kwon; Myung Ho Jeong; Jeffrey A. Hubbell; Dong Keun Han
- Issue Date
- ACS Nano
- VOL 12, NO 7-6925
- Biodegradable polymers have been extensively used in biomedical applications, ranging from regenerative medicine to medical devices. However, the acidic byproducts resulting from degradation can generate vigorous inflammatory reactions, often leading to clinical failure. We present an approach to prevent acid-induced inflammatory responses associated with biodegradable polymers, here poly(lactide-co-glycolide), by using oligo(lactide)-grafted magnesium hydroxide (Mg(OH)(2)) nanoparticles, which neutralize the acidic environment. In particular, we demonstrated that incorporating the modified Mg(OH)(2) nanoparticles within degradable coatings on drug-eluting arterial stents efficiently attenuates the inflammatory response and in-stent intimal thickening by more than 97 and 60%, respectively, in the porcine coronary artery, compared with that of drug-eluting stent control. We also observed that decreased inflammation allows better reconstruction of mouse renal glomeruli in a kidney tissue regeneration model. Such modified Mg(OH)(2) nanoparticles may be useful to extend the applicability and improve clinical success of biodegradable devices used in various biomedical fields.
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