Results 61 to 70 of about 73,561 (313)

Microglial Membranes Wrapped Ultrasmall Medium‐Entropy Ru Single‐Atom Nanozyme: Enhanced Catalysis for Accelerating Inflammation/Redox Microenvironment Regulation in Intracerebral Hemorrhage

Advanced Science, EarlyView.
PtRhIr/Ru SAN@M nanozymes cross the blood–brain barrier and selectively accumulate in hemorrhagic brain regions. By mimicking multiple enzyme activities, they attenuate oxidative stress, modulate microglial polarization toward an anti‐inflammatory phenotype, inhibit ferroptosis, and promote neuronal repair.
Jiebo Li, Penghui Wei, Yuanbo Pan, Hongjia Zheng, Jiajun Hu, Qianxi Chen, Zhongyuan Shen, Yongrui Hu, Jiajun Wu, Fuxin Lin, Fuxiang Chen, Chenyu Ding, Wenhua Fang, Yuanxiang Lin, Dezhi Kang, Yuxiang Gu, Yang Zhu, Dengliang Wang   +17 more
wiley   +1 more source

Optimizing vacuum drying process of polyphenols, flavanols and DPPH radical scavenging assay in pod husk and bean shell cocoa [PDF]

, 2023
Fernando Ramos-Escudero, Sandra Casimiro-Gonzales, María de la Luz Cádiz‐Gurrea, Keidy Cancino Chávez, Jaime Basilio‐Atencio, Elizabeth Ordoñez, Ana María Muñoz, Antonio Segura‐Carretero   +7 more
openalex   +1 more source

Cascade‐Responsive MXene@Cu‐MOF Heterostructure Integrates Antioxidant Activity, Infection Control, and Vascularization for Tracheal Repair

Advanced Science, EarlyView.
A cascade‐responsive MXene@Cu‐MOF/GelMA hydrogel is engineered as a “skeleton–backpack” platform for extensive tracheal repair. The MXene framework scavenges postoperative ROS and converts NIR light into mild hyperthermia, while the Cu‐MOF component provides pH/NIR‐responsive Cu2+ dosing for infection control, angiogenesis, and chondrogenesis.
Liang Guo, Yingran Shen, Jiaoyu Yi, Juanjuan Li, Ziming Wang, Erji Gao, Siqiang Zheng, Zhe‐Sheng Chen, Bo Tao   +8 more
wiley   +1 more source

Relations between polyphenols content and antioxidant activity in vine grapes and leaves

Czech Journal of Food Sciences, 2008
The occurrence and content of some polyphenols and the antioxidant activity of compounds present in grape berries, stems and leaves of Vitis vinifera L. were evaluated. Three white and three blue varieties of grapevine were investigated.
Josef BALÍK, Marie KYSELÁKOVÁ, Naděžda VRCHOTOVÁ, Jan TŘÍSKA, Michal KUMŠTA, Jaromír VEVERKA, Pavel HÍC, Jiří TOTUŠEK, Danuše LEFNEROVÁ   +8 more
doaj   +1 more source

INTERCALATION OF FREE RADICAL, DPPH, INTO MONTMORILLONITE

Analytical Sciences, 1991
The adosorption of DPPH in the interlayer of sodium montmorillonite and sodium saponite have been investigated by ESR. As the results, DPPH molecules dimerize to form diamagnetic species in montmorillonite, whereas DPPH molecules in saponite exist as isolated stable free radical species at room temperature.
Yuji NAKAMURA, Tokuko WATANABE
openaire   +2 more sources

ROS‐Responsive Wedelolactone Hydrogel Promotes Intervertebral Disc Repair by Disrupting the NF‐κB–LCN2 Inflammatory Feedback Loop

Advanced Science, EarlyView.
A mechanically robust, ROS‐responsive hydrogel is engineered to treat intervertebral disc degeneration by targeting the NF‐κB–LCN2 inflammatory feedback loop. By delivering wedelolactone specifically within oxidative niches, this system disrupts macrophage–disc cell crosstalk.
Zimei Wu, Yan Xu, Lang Qin, Zemin Ling, Yingjie Mai, Xiong Tian Guo, Jiajia Chen, Leping Yan, Lin Wang, Liming Bian, Fuxin Wei   +10 more
wiley   +1 more source

Multi-experimental characterisation of grape skin extracts

Czech Journal of Food Sciences, 2008
Grape skins contain a plenty of different flavonoids, most of them revealing significant antioxidant properties. In this contribution, a complex study is presented of grape skin ethanol extracts, prepared from grape skins of two vine grape varieties ...
Lenka ŠŤAVÍKOVÁ, Martin POLOVKA, Barbora HOHNOVÁ, Jana ZEMANOVÁ   +3 more
doaj   +1 more source

Self‐Assembled Myricetin‐Arginine Conjugate Nanozymes for Targeted Suppression of Joint Inflammation and Osteoclastogenesis in Rheumatoid Arthritis

Advanced Science, EarlyView.
Carrier‐free myricetin‐arginine conjugate nanozymes (MANZs) have been fabricated through a Mannich reaction and spontaneous self‐assembly. MANZs selectively accumulate in inflamed joints by targeting M1 macrophages via CAT2‐mediated uptake. The nanozymes can effectively modulate macrophage polarization, suppress osteoclast differentiation, and mitigate
Jiachang Hong, Penghao Ji, Jinxi An, Junchao Huang, Ziheng Bu, Xudong Zhang, Wei Liu, Tingyu Wu, Sen Wang, Wei Zhu, Yuhui Li, Jixian Wan, Sudan Xu, Minfeng Huo, Peng Wu   +14 more
wiley   +1 more source

Antioxidant activity of selected phenols and herbs used in diets for medical conditions

Czech Journal of Food Sciences, 2010
The antioxidant capacity of some herbs used in dietology practice was determined by the DPPH free radical method, which was calibrated with ascorbic acid.
Diana Chrpová, Lenka Kouřimská, Michael Harry Gordon, Veronika Heřmanová, Iva Roubíčková, Jan Pánek   +5 more
doaj   +1 more source

A Universal Metal–Flavonoid Coating Strategy: Engineering Biomaterials for Diabetic Bone Regeneration

Advanced Science, EarlyView.
Construction of metal–flavonoid functionalized coatings on conventional bone repair materials. A one‐pot method is used to directly construct multifunctional metal–flavonoid coatings on the surface of traditional bone repair materials by selecting metal ions with osteogenic/angiogenic properties and flavonoids with reactive oxygen species scavenging ...
Chen Yang, Chenle Dong, Lefeng Su, Zhiqiang Liu, Lingyi Hu, Qishu Jin, Hao Chen, Chunlong Zhang, Yihao Wu, Jiang Chang, Zhaowenbin Zhang, Jiandong Yuan   +11 more
wiley   +1 more source