Abstract: An implant is provided comprising a substrate having one or more nanoceria coatings coated at least partially thereon, wherein the one or more nanoceria coatings comprise surface cerium having a 3+/4+ oxidation state ratio such that the one or more nanoceria coatings exhibit catalase mimetic activity, superoxide dismutase mimetic activity, or both. Methods are provided for forming a nanoceria coating. The coating has nanoceria having a surface cerium 3+/4+ oxidation state ratio such that such that the coating exhibits catalase mimetic activity, superoxide dismutase mimetic activity, or both. Also disclosed is a method of reducing degradation of an implant by placing nanoceria in proximity to a bone-implant interface.

Abstract: An implant is provided comprising a substrate having one or more nanoceria coatings coated at least partially thereon, wherein the one or more nanoceria coatings comprise surface cerium having a 3+/4+ oxidation state ratio such that the one or more nanoceria coatings exhibit catalase mimetic activity, superoxide dismutase mimetic activity, or both. Methods are provided for forming a nanoceria coaling. The coating has nanoceria having a surface cerium 3+/4+ oxidation state ratio such that such that the coating exhibits catalase mimetic activity, superoxide dismutase mimetic activity, or both. Also disclosed is a method of reducing degradation of an implant by placing nanoceria in proximity to a bone-implant interface.

Abstract: An implant is provided comprising a substrate having one or more nanoceria coatings coated at least partially thereon, wherein the one or more nanoceria coatings comprise surface cerium having a 3+/4+ oxidation state ratio such that the one or more nanoceria coatings exhibit catalase mimetic activity, superoxide dismutase mimetic activity, or both. Methods are provided for forming a nanoceria coaling. The coating has nanoceria having a surface cerium 3+/4+ oxidation state ratio such that such that the coating exhibits catalase mimetic activity, superoxide dismutase mimetic activity, or both. Also disclosed is a method of reducing degradation of an implant by placing nanoceria in proximity to a bone-implant interface.

Abstract: The present invention includes a method for scavenging nitric oxide. The method includes contacting the nitric oxide with cerium oxide nanoparticles having a low 3+/4+ ratio.

Abstract: Redox-active NPs are disclosed that can potentiate innate immunity and stimulate distinct adaptive responses, producing distinct T cell subset polarization outcomes. Nanomaterials that can alter the cellular redox environment through ROS modulation can impact human immunology. TiO2 nanoparticles potentiate DC maturation, inducing the secretion of IL-12, p70, and IL-1B, while treatment with CeO2 nanoparticles induces IL-10, a hallmark of suppression. When delivered to T cells, the materials direct distinct TH polarization, where TiO2 stimulates largely a TH1 dominated response, whereas CeO2 stimulates a TH2 bias and TReg differentiation.

Abstract: Methods of using cerium oxide nanoparticles to promote angiogenesis are described. In a particular embodiment, a method of promoting angiogenesis in animal tissue comprises contacting the tissue with a composition comprising cerium oxide nanoparticles effective for stimulating proliferation of endothelial cells associated with the tissue.

Abstract: The present invention includes a method for scavenging nitric oxide. The method includes contacting the nitric oxide with cerium oxide nanoparticles having a low 3+/4+ ratio.

Abstract: The present invention relates to H3 histaminergic agonists, compositions thereof, and methods for treating or preventing addiction to drugs of abuse in a subject. The methods comprise administering to a subject in need thereof an effective amount of one or more H3 histaminergic agonists to prevent addiction, diminish the voluntary seeking of drugs of abuse, facilitate the cessation of the addictive behavior, and to prevent relapse.