Evaluation of antioxidant activity of chrysanthemum extracts and tea beverages by gold nanoparticles-based assay

Liu, Quanjun; Liu, Haifang; Zhi-liang, Yuan; Wei, Dongwei; Yongzhong, Ye

doi:10.1016/j.colsurfb.2011.12.007

Cited by 65 publications

(36 citation statements)

References 25 publications

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“…Among noble metals, silver [96][97][98][99][100][101][102][103][104][105][106][107][108][109] and gold [110][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126] nanoparticles are commonly used to make nanotheranostics for cancer and microbial infection. Silver nanoparticles are widely used as antimicrobial agents in topical applications.…”

Section: Noble Metalsmentioning

confidence: 99%

Applications of phototheranostic nanoagents in photodynamic therapy

et al. 2014

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Nanotherapeutics has an increasing role in the treatment of diseases such as cancer. In photodynamic therapy (PDT) a therapeutically inactive photosensitizer compound is selectively activated by light to produce molecules capable of killing diseased cells and pathogens. A phototheranostic agent can be defined as a single nanoentity with the capabilities for targeted delivery, optical imaging and photodynamic treatment of a disease. Malignant cells, tissue and microbial etiologic agents can be effectively targeted by PDT. Photodynamic therapy is noninvasive, or minimally invasive, and has few side effects as damage to healthy tissue is minimized and the killing effect is localized. Various forms of cancer, acne and other diseases may be treated. The in vivo efficacy of photosensitizers is further improved by attaching them to nanostructures capable of targeting the diseased site. Such photosensitizer-functionalized nanostructures, or nanotherapeutics, allow site-specific delivery of imaging and therapeutic agents for improved phototheranostic performance. This review explores the potential applications of phototheranostic nanostructures in diagnosis and therapy.

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Section: Noble Metalsmentioning

confidence: 99%

Applications of phototheranostic nanoagents in photodynamic therapy

et al. 2014

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“…These assays either exploit the ability of antioxidants to reduce noble metals towards the formation of the respective nanoparticles (e.g. AuCl 4 À to AuNPs, Ag + to AgNPs) [11][12][13][14] or use antioxidants as reducing agents in the seed-mediated growth technique, where small NP seeds serve as nucleation centers to the growth and further enlargement of nanoparticles [15,16]. Since the absorbance of the colloidal NP suspensions depends on the properties of the surface resonance plasmon bands, intense colorimetric and chromatic transitions are observed which are used as a measure of antioxidant activity.…”

Section: Introductionmentioning

confidence: 99%

Paper-based assay of antioxidant activity using analyte-mediated on-paper nucleation of gold nanoparticles as colorimetric probes

Choleva

Kappi

Giokas

et al. 2015

Analytica Chimica Acta

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“…Avidin is used for both sensor designing and antioxidant activity during the fabrication of immunosensor analysis platforms. Liu et al, 2012). Apart from these studies, antioxidant activity was also examined during the growth and aggregation of Au nanoparticles (Sudeep et al, 2005;Ma and Qian, 2010).…”

Section: Dpph Free Radical-scavenging Activitymentioning

confidence: 99%

The comparison of antioxidant capacity and cytotoxic, anticarcinogenic,and genotoxic effects of Fe@Au nanosphere magnetic nanoparticles

Yegenoglu¹,

Aslım²,

Güven³

et al. 2017

Turk J Biol

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Magnetic gold nanoparticles are used in various biomedical, biochemistry, and biotechnology applications due to their controllable size distribution, long-term stability, reduced toxicity, and biocompatibility. Different coating materials, such as proteins, carbohydrates, lipids, and polyphenols, are applied to enhance the biocompatibility of nanoparticles. In this study, the effects of surface coatings of core-shell structured Fe@Au nanosphere magnetic nanoparticles with regard to antioxidant capacity and cytotoxic, anticarcinogenic, and genotoxic properties were investigated. The obtained results demonstrated that avidin-coated Fe@Au nanospheres had higher antioxidant capacities than uncoated nanospheres. Neither avidin-coated nor uncoated nanoparticles had a cytotoxic effect on normal cells (human gingival fibroblast cell line, HGF-1). In addition, they had anticarcinogenic effects on human cervical carcinoma (HeLa), human breast adenocarcinoma (MCF-7), and human colorectal adenocarcinoma (CCL-221). The genotoxic effects of nanoparticles were also evaluated with DNA tail damage ratio.

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Evaluation of antioxidant activity of chrysanthemum extracts and tea beverages by gold nanoparticles-based assay

Cited by 65 publications

References 25 publications

Applications of phototheranostic nanoagents in photodynamic therapy

Applications of phototheranostic nanoagents in photodynamic therapy

Paper-based assay of antioxidant activity using analyte-mediated on-paper nucleation of gold nanoparticles as colorimetric probes

The comparison of antioxidant capacity and cytotoxic, anticarcinogenic,and genotoxic effects of Fe@Au nanosphere magnetic nanoparticles

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