Epigallocatechin-3-gallate (EGCG), a catechin present in green tea, has been studied extensively for its potential as a cosmetic ingredient due to its various biological properties. However, the low stability and bioavailability of EGCG have hindered its effective utilization in cosmetic applications. This study, to improve the stability and bioavailability of EGCG for reversing skin photo-aging, nonapeptide-1-conjugated mesoporous silica nanoparticles (EGCG@NP-MSN) were fabricated to load EGCG. MSNs can regulate the EGCG release and provide ultraviolet light (UV) protection to possess excellent photostability. Nonapeptide-1 exhibits melanin transfer interference properties and reduces the melanin content in treated skin areas. In vitro and in vivo results confirmed that the EGCG-loaded MSNs retained antioxidant properties, effectively scavenged the melanin and significantly reduced the deoxyribonucleic acid (DNA) damage in skin cells exposed to UV irradiation. The melanin inhibition rate is 5.22 times and the tyrosinase inhibition rate is 1.57 times that of free EGCG. The utilization of this innovative platform offers the potential for enhanced stability, controlled release, and targeted action of EGCG, thereby providing significant advantages for skin application.This delivery system combines the advantages of antioxidant, anti-aging, and anti-UV radiation properties, paving the way for the cosmetics development with improved efficacy and better performance in promoting skin health and appearance.
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http://dx.doi.org/10.1016/j.ijpharm.2024.124690 | DOI Listing |
Cells
January 2025
Laboratory of Food and Physiological Sciences, Department of Life and Food Sciences, School of Life and Environmental Sciences, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara 252-5201, Kanagawa, Japan.
While the impact of (-)-epigallocatechin-3-gallate (EGCG) on modulating nociceptive secondary neuron activity has been documented, it is still unknown how EGCG affects the excitability of nociceptive primary neurons in vivo. The objective of the current study was to investigate whether administering EGCG locally in rats reduces the excitability of nociceptive primary trigeminal ganglion (TG) neurons in response to mechanical stimulation in vivo. In anesthetized rats, TG neuronal extracellular single unit recordings were made in response to both non-noxious and noxious mechanical stimuli.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Qingdao Bright Moon Seaweed Bio-Health Technology Group Co., Ltd, Qingdao 266400, China.
In this study, oil-in-water (O/W) high internal phase emulsions (HIPEs) with enhanced antioxidative properties stabilized by octenyl succinic anhydride modified starch (OSAS)/(-)-Epigallocatechin-3-gallate (EGCG) mixtures were prepared. The influence of EGCG concentration (0-0.2 %, w/v), NaCl concentration (0-400 mmol/L), and temperature (25-90 °C) on the stability of the HIPEs was evaluated.
View Article and Find Full Text PDFFood Chem
January 2025
Experimental Education/Administration Center, National Demonstration Center for Experimental Education of Basic Medical Sciences, Key Laboratory of Functional Proteomics of Guangdong Province, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong Province, China. Electronic address:
The correlation among the hierarchical structure, physicochemical properties, and nutritional functions of porous rice starch after absorbing and complexing with (-)-epigallocatechin gallate palmitate (P-EGCG) under mild temperatures at different reaction times were investigated. The P-EGCG loading rate (19.6 %-28.
View Article and Find Full Text PDFVirology
January 2025
Division of Virology, ICMR-National Institute of Translational and AIDS Research Institute, Pune, India; AcSIR - Academy of Scientific & Innovative Research, Ghaziabad, India. Electronic address:
The integration of nanotechnology into antiretroviral drug delivery systems presents a promising avenue to address challenges posed by long-term antiretroviral therapies (ARTs), including poor bioavailability, drug-induced toxicity, and resistance. These limitations impact the therapeutic effectiveness and quality of life for individuals living with HIV. Nanodrug delivery systems, particularly nanoemulsions, have demonstrated potential in improving drug solubility, enhancing bioavailability, and minimizing systemic toxicity.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Sauvage Laboratory for Smart Materials, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China; Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China. Electronic address:
In the field of cosmetics, epigallocatechin gallate (EGCG) is highly valued for its multiple effects such as delaying photoaging, whitening, anti-allergy, acne removal, astringency, and moisturizing. However, due to the active chemical properties of EGCG, there are challenges in terms of stability and transdermal absorption, which limits its widespread application in cosmetics. Therefore, we utilized supramolecular modification technology to form supramolecular carboxymethyl chitosan-EGCG-trehalose (CC-EGCG) by combining EGCG with carboxymethyl chitosan and trehalose, enhancing its stability.
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