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- W4281889940 abstract "Inhibition of foam cell formation is considered a promising treatment method for atherosclerosis, the leading cause of cardiovascular diseases worldwide. However, currently available therapeutic strategies have shown unsatisfactory clinical outcomes. Thus, herein, we design aloperine (ALO)-loaded and hyaluronic acid (HA)-modified palladium (Pd) octahedral nanozymes ([email protected]/ALO) that can synergistically scavenge reactive oxygen species (ROS) and downregulate cyclooxygenase-2 (COX-2) expression to induce macrophage polarization, thus inhibiting foam cell formation to attenuate atherosclerosis. Due to the targeted effect of HA on stabilin-2 and CD44, which are overexpressed in atherosclerotic plaques, [email protected]/ALO can actively accumulate in atherosclerotic plaques. Subsequently, the antioxidative effects of Pd octahedral nanozymes are mediated by their intrinsic superoxide dismutase- and catalase-like activities capable of effective scavenging of ROS. In addition, anti-inflammatory effects are mediated by controlled, on-demand near-infrared-triggered ALO release leading to inhibition of COX-2 expression. Importantly, the combined therapy can promote the polarization of macrophages to the M2 subtype by upregulating Arg-1 and CD206 expression and downregulating expression of TNF-α, IL-1β and IL-6, thereby inhibiting atherosclerosis-related foam cell formation. In conclusion, the presented in vitro and in vivo data demonstrate that [email protected]/ALO enhanced macrophage polarization to reduce plaque formation, identifying an attractive treatment strategy for cardiovascular disease." @default.
- W4281889940 created "2022-06-13" @default.
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- W4281889940 date "2023-01-01" @default.
- W4281889940 modified "2023-09-29" @default.
- W4281889940 title "Enhanced macrophage polarization induced by COX-2 inhibitor-loaded Pd octahedral nanozymes for treatment of atherosclerosis" @default.
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- W4281889940 doi "https://doi.org/10.1016/j.cclet.2022.06.008" @default.
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