Results 51 to 60 of about 160,911 (301)

Nano‐Backpack Engineered Probiotics with Reactive Oxygen Species–Responsive Tungsten Release for Synergistic Therapy of Inflammatory Bowel Disease

open access: yesAdvanced Science, EarlyView.
An integrated probiotic system is engineered to execute a programmed therapeutic cascade against inflammatory bowel disease. Upon pathological signals, the system sequentially performs ROS scavenging, tungsten release, and selective pathogen suppression, thereby breaking the oxidative stress–dysbiosis cycle to remodel gut microbiota and reinforce ...
Yang Yang   +8 more
wiley   +1 more source

A Pathology‐Instructed Theranostic Platform with Mechanoadaptive and ROS‐Powered Nanobreathing Functions for Precision Myocardial Repair

open access: yesAdvanced Science, EarlyView.
We developed a pH responsive theranostic serum albumin hydrogel named BST, functionalized with MRI and CT probes and loaded with mitochondria targeted CAT‐SOD nanogels, that rapidly self repairs and mechanically stabilizes the infarcted myocardium, releases therapeutic nanogels and albumin under hypoxia induced acidosis to clear mitochondrial ROS ...
Zheng Luo   +7 more
wiley   +1 more source

Extraction of Antioxidant Effective Components from Black Wheat Bran and Evaluation of its Antioxidant Capacity

open access: yesLiang you shipin ke-ji, 2021
Black wheat bran is by-products of the black wheat processing, which is rich in many physiological active substances, including anthocyanins, phenolic acids and dietary fiber. In this study, the antioxidant activity of black wheat bran was extracted with
YU Zhang-long   +7 more
doaj   +1 more source

DPPH Radical-Scavenging Ability of Browning Materials [PDF]

open access: yes, 2004
グルコースとグリシンによるアミノカルボニル反応で生成した褐変物質、ショ糖のカラメル化反応によって生成した褐変物質、魚醤に含まれる褐変物質、タマネギを加熱して得られる褐変物質についてDPPHラジカル消去能を測定し、次のような結果を得た。1. pH5.0、6.0、7.0および7.4で0.5M-グルコースおよびグリシンの等量混液を加熱し、アミノカルボニル反応を行ったところ、pHが高いほど着色度が高く、着色度が高いほどDPPHラジカル消去能も高くなった ...
SHIMOHASHI, Atsuko   +2 more
core   +1 more source

Nanozyme‐Reinforced miR‐197‐3p Delivery Resets Metabolic and Senescence Pathways to Rejuvenate Osteoarthritic Cartilage

open access: yesAdvanced Science, EarlyView.
ABSTRACT Osteoarthritis (OA) is a progressive and disabling joint disease driven by oxidative stress, chondrocyte senescence and extracellular matrix (ECM) degradation, yet lacks effective disease‐modifying treatments. In this study, we identified miR‐197‐3p as a previously unrecognized, cartilage‐protective miRNA significantly downregulated in both ...
Xuejie Cai   +11 more
wiley   +1 more source

Importance and using DPPH in cereals

open access: yes, 2011
Bakalářská práce obsahuje stručnou charakteristiku cereálií, cereálních výrobků, vymezení pojmu antioxidační aktivity a jednotlivé metody jejího stanovení. Podrobnější popis je zaměřen na význam a využití metody DPPH.
Jančová, Veronika
core   +2 more sources

Investigation of The Antioxidant Activity of Cinnamon Bark Extracted with Different Solvents

open access: yesJurnal Ilmiah Ilmu-Ilmu Peternakan, 2023
The objective of this study was to evaluate the effect of methanol, ethyl acetate, and hexane for the extraction of cinnamon bark (Cinnamomum burmanni) (CB) on the contents of the total phenolic, total flavonoid and its 1,1,-diphonyl-1-picryl-hydrazyl ...
Muhammad Afdal   +3 more
doaj   +1 more source

Oral Prebiotic Polysaccharide Hydrogels Sustaining Colon Antibody Release Alleviate Inflammatory Bowel Disease

open access: yesAdvanced Science, EarlyView.
An orally administered prebiotic polysaccharide hydrogel (predaGel) based on inulin and alginate‐dopamine is stable in the stomach, adheres to the intestine, and degrades slowly in the colon. It enables site‐specific delivery of anti‐TNF‐α and anti‐IL‐12/23 antibodies, scavenges reactive oxygen species, and remodels gut microbiota, offering effective ...
Xinyi Dong   +4 more
wiley   +1 more source

Phytochemical screening and antioxidant activity of Uncaria tomentosa extract: In vitro and in vivo studies

open access: yesMedical Journal of Babylon, 2023
Background: Uncaria tomentosa is a traditional medicinal herb with antiviral, antioxidant, immunostimulating, anti-inflammatory, and anticancer effects. Objective: The present study was conducted to evaluate the antioxidant capacity in vitro and in vivo ...
Enass Najem Oubaid   +2 more
doaj   +1 more source

Inhalable ROS‐Responsive Nanospray Activates PPAR‐γ to Restore Macrophage Mitochondrial Homeostasis and Attenuate Radiation‐Induced Lung Injury

open access: yesAdvanced Science, EarlyView.
A nebulized nanoassembly alleviates radiation‐induced lung injury by reprogramming macrophages through coordinated ROS scavenging, NAD+ replenishment, and PPAR‐γ activation. Redox balance, mitochondrial homeostasis, and immune regulation are restored, revealing a microenvironment‐centered strategy for localized radioprotection.
Mingquan Gao   +11 more
wiley   +1 more source

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