期刊
ACS NANO
卷 12, 期 7, 页码 6917-6925出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.8b02365
关键词
biodegradable polymers; inflammation; magnesium hydroxide; neutralization; biomedical applications
类别
资金
- Basic Science Research Program through the National Research Foundation of Korea - Ministry of Science and ICT (MSIT), Republic of Korea [2017R1A2B3011121]
- Medical Technology Development Programs through the National Research Foundation of Korea - Ministry of Science and ICT (MSIT), Republic of Korea [2014M3A9D3033887, 2018M3A9E2024579]
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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