Results 41 to 50 of about 57,523 (263)

Sodium Ascorbate‐Accelerated Gelling Hydrogels With Rapid Self‐Mineralized Capacity for Chronic Wounds

Advanced Science, EarlyView.
An immunoregulatory hydrogel based on sodium ascorbate (SA)‐accelerated gelation and in situ self‐mineralization is prepared here. Such a hydrogel is constructed by mixing benzaldehyde‐ and cyanoacetate‐functionalized dextran with silver nitrate (AgNO3) and SA, enabling the ultrafast solidification and in situ self‐mineralization of silver ...
Xiaoya Ding, Wei Yang, Wenzhao Li, Guifang Xu, Yuanjin Zhao   +4 more
wiley   +1 more source

A Sprayable Nanoplatform Breaks the Vicious Cycle of Diabetic Wounds via Photoactivated Antioxidant and Drug Delivery

Advanced Science, EarlyView.
A sprayable near‐infrared‐activated nanoplatform incorporating MXene, ZnHCF nanozyme, and deferoxamine efficiently breaks the vicious cycle of diabetic wounds. Upon irradiation, interfacial electron transfer and photothermal effects enhance multi‐enzyme activity, enabling explosive ROS elimination, alleviation of hypoxia, and controlled DFO release ...
Jiahao Guo, Yuanyuan Meng, Qixiang Gui, Xi‐Tao Yang, Yong Fan, Xiaodong Zhu   +5 more
wiley   +1 more source

Evaluation of the Radical Scavenging Activity of Resorcinarenes by DPPH• Free Radical Assay

Journal of Chemical Research, 2010
A series of methyl-pendanted resorcinarene derivatives have been synthesised and evaluated for radical scavenging potential by using a colorimetric DPPH• assay to reveal their utility as potent radical scavengers. An evaluation of the efficiencies in relation to the number of DPPH• molecules reduced by one molecule of antioxidant establishes that ...
Anjali Bishnoi, Har Mohindra Chawla, Nalin Pant, Sarika Mrig, Satish Kumar   +4 more
openaire   +1 more source

NIR‐II‐Trackable LYTACs Phyto‐Nanotheranostics for Source‐Microenvironment Dual‐Track ROS Regulation in Acute Gouty Arthritis

Advanced Science, EarlyView.
The TPR‐LYTACs nanomaterial offers a dual‐pathway strategy for precise gouty arthritis treatment by targeting and degrading the ROS‐producing enzyme NOX2 inside macrophages while its antioxidant core clears accumulated ROS outside. This “source inhibition and microenvironment scavenging” approach, guided by NIR‐II imaging, effectively controls local ...
Jian Zhang, Yingying Wang, Lujie Yu, Chunmei Jiang, Haoyu Liu, Yaohua Chen, Shutong Wu, Qin Liu, Lingling Wei, Xiaochun Zheng, Huifang Hao, Mengting Gao, Weiwei Kang, Rong Dai, Ziliang Zheng, Ruiping Zhang   +15 more
wiley   +1 more source

A Wireless 3D Magneto‐Mechanical Stimulation Platform Drives In Situ Chondrogenic Commitment of Endogenous MSCs

Advanced Science, EarlyView.
An intracellular magneto‐mechanical platform utilizing MSC‐targeted nanomotors is developed. After intra‐articular delivery, these nanomotors target endogenous BMSCs and are actuated within lysosomes to execute trans‐planar rotational‐bouncing motions under a rotating‐fluctuating 3D magnetic field, generating amplified mechanical stimulation.
Zhenguang Li, Li Peng, Laiya Lu, Yingying Wang, Xiaolei Chen, Feng Yin, Cuijun Deng, Yu Cheng   +7 more
wiley   +1 more source

Synthesis and in Vitro Antioxidant Activity Evaluation of 3-Carboxycoumarin Derivatives and QSAR Study of Their DPPH• Radical Scavenging Activity

Molecules, 2012
The in vitro antioxidant activities of eight 3-carboxycoumarin derivatives were assayed by the quantitative 1,1-diphenyl-2-picrylhydrazil (DPPH•) radical scavenging activity method.
Maria Teresa Sumaya-Martínez, Zeferino Gómez-Sandoval, Daniel Jaramillo Cano, Manuel Villanueva-García, Francisco J. Martínez-Martínez, Rodrigo Said Razo-Hernández, Ana Lilia Peraza-Campos   +6 more
doaj   +1 more source

Kinetic behaviour of DPPH radical scavenging activity of tomato waste extracts [PDF]

Journal of the Serbian Chemical Society, 2012
The kinetic behaviour of tomato waste extracts (obtained from six genotypes) and standard antioxidant compounds (ascorbic and caffeic acid) were investigated using 2,2-diphenyl-1-picrylhydrazyl radical test.
Ćetković Gordana S., Čanadanović-Brunet Jasna M., Đilas Sonja M., Savatović Slađana M.   +3 more
doaj   +1 more source

A Blood‐Derived Double‐Network Hydrogel with Robust Wet Adhesion for Keratinized Mucosa Regeneration via Neutrophil Phenotype Reprogramming and Mechanophysical Niche Modulation

Advanced Science, EarlyView.
The iPRF‐MA/Alg‐NHS/Lut@EGCG (PGAE) double‐network hydrogel achieves durable wet adhesion in the oral environment. It simultaneously reprograms neutrophils from NETosis to phagocytosis for biofilm clearance, and activates the FAK‐RhoA‐YAP mechanotransduction pathway in gingival fibroblasts to drive extracellular matrix remodeling, thereby promoting ...
Sicong Ren, Xinting Yang, Jingxia Chen, Yihan Wang, Jian Feng, Jing Zhou, Jiaxin Luo, Jingjie Zhai, Quan Lin, Yanmin Zhou   +9 more
wiley   +1 more source

Inaoside A: New antioxidant phenolic compound from the edible mushroom Laetiporus cremeiporus

Heliyon
Laetiporus cremeiporus is the edible mushroom distributed in East Asia. It has been reported that an extract of L. cremeiporus exhibited DPPH radical scavenging activity. The aim of this study is to identify the antioxidant compound from L.
Atsushi Kawamura, Aira Mizuno, Mayuri Kurakake, Akiyoshi Yamada, Hidefumi Makabe   +4 more
doaj   +1 more source

THE ACTIVITY OF RADICAL SCAVENGING OF 2,2-DIPHENYL-1-PYCRILHYDRAZIL BY ETHANOLIC EXTRACTS OF (Tinospora crispa (L.) Miers) STEM AND ITS FRACTIONS

Majalah Obat Tradisional, 2016
We have investigated the antiradical activity of ethanolic extracts of Brotowali stem (Tinospora crispa (L.) Miers) using radical scavenging assay or DPPH radical.
Tatang Irianti, Andayana Puspitasari, Ema Suryani   +2 more
doaj   +1 more source