Results 41 to 50 of about 19,202 (196)

Synergistic Enhancement of Antioxidant Activity in Arbutus unedo Leaf Extract by Biological Fluids: Implications for Functional and Nutraceutical Applications

Biotechnology and Applied Biochemistry, EarlyView.
ABSTRACT This study examined the effect of biological fluids (saliva, blood plasma, and urine) on the antioxidant capacity of an aqueous extract derived from Arbutus unedo leaves. The extract displayed a concentration‐dependent reducing activity in the ferric reducing power assay (IC50 = 292 ± 7.54 µg/mL) and phosphomolybdenum assays (IC50 = 461.67 ± 4.
Idir Moualek, Hamdi Bendif, Karima Benarab, Giulio Lupidi, Fehmi Boufahja, Stefania Garzoli, Karim Houali   +6 more
wiley   +1 more source

Exogenous ochronosis: case report and literature review Ocronose exógena: relato de caso e revisão de literatura

Anais Brasileiros de Dermatologia, 2012
Exogenous ochronosis is a rare, cosmetically disfiguring condition, resulting from the longterm use of topical hydroquinone in treatment of melasma. It manifests as gray-brown or blue-black macules in hydroquinone-exposed regions.
Viviane Maria Rocha Martins, Antônio Renê Diógenes de Sousa, Natália de Carvalho Portela, Celina Aguiar Frota Tigre, Lucidi Maria Saraiva Gonçalves, Rômulo José de Lucena Castro Filho   +5 more
doaj   +1 more source

Harnessing ferroptosis from multilayer defense networks to nanoplatforms for specific cancer therapy

BMEMat, EarlyView.
Nanomaterials target metabolically‐regulated ferroptosis for cancer therapy. Iron‐based or alternative nanoplatforms integrate ferroptosis with chemotherapy, immunotherapy, or radiotherapy. They enable stimulus‐responsive therapies (photothermal, photodynamic, sonodynamic) activated by near‐infrared, light, or ultrasound, achieving potent synergistic ...
Xinyue Xu, Xuejian Wang, Wenyan Jiang, Wan Hairul Anuar Kamaruddin, Chunyan Fang, Pengfei Zhang   +5 more
wiley   +1 more source

New sesquiterpene hydroquinones from the Caribbean sponge Aka coralliphagum

Beilstein Journal of Organic Chemistry, 2014
Four new sulfated sesquiterpene hydroquinones siphonodictyals E1–E4 (1–4) and cyclosiphonodictyol A (5) were isolated from a sample of the Caribbean sponge Aka coralliphagum collected off the coast of San Salvador in the Bahamas.
Qun Göthel, Matthias Köck
doaj   +1 more source

Glycopolymeric nanoparticles transported by activated platelets protect ischemic myocardium by alleviating PANoptosis through targeting macrophage Dectin‐1

BMEMat, EarlyView.
NP‐SF, designed to target macrophage Dectin‐1 and activated platelets, selectively accumulated in ischemic myocardium, where it was taken up by macrophages after platelet hitchhiking. By inhibiting NLRC5‐related PANoptosis, NP‐SF significantly attenuated pathological damage, and effectively preserved cardiac function in a murine ischemia–reperfusion ...
Guanye Yu, Na Yang, Yan Zhang, Lingxin Peng, Yi Li, Yue Chao, Qinfang Miao, Haikun Qi, Jianhui Zhuang, Weixia Jian, Bingyu Li, Wenhui Peng, Jinghua Chen, Shiyu Gong   +13 more
wiley   +1 more source

On-line Electrochemical Tagging of Free Cysteines in Peptides during Nanospray Ionisation Mass Spectrometry: An Overview

CHIMIA, 2004
A recently developed nanospray interface for mass spectrometry (MS) was used to electro-generate benzoquinone from hydroquinone. When spraying biomolecules containing free cysteine residues in the presence of hydroquinone, the thiol cysteine ...
Loïc Dayon, Christophe Roussel, Hubert H. Girault   +2 more
doaj   +1 more source

The marine sponge genus Dysidea sp: the biological and chemical aspects—a review

Future Journal of Pharmaceutical Sciences, 2023
Background Marine sponges and other marine invertebrates are considered hidden treasures for a variety of secondary metabolites with pharmacognostic and pharmacological activities which have the potential to create future “super drugs.” The main body of ...
Noha Fathallah, Ahmed Tamer, Reem Ibrahim, Mariam kamal, Mariam El Kes   +4 more
doaj   +1 more source

MXenes as a Versatile Platform for High‐Energy‐Density Asymmetric Supercapacitors

Carbon Energy, EarlyView.
MXenes with high conductivity and tunable surface chemistry are reviewed as advanced electrodes for asymmetric supercapacitors. MAX‐phase synthesis, surface and interlayer engineering, defect modulation, and composite designs are discussed, highlighting enhanced ion transport, pseudocapacitance, energy density, cycling stability, and sustainable routes
Seul‐Yi Lee, Jagadis Gautam, Shrikant Vaiju Sadavar, Soo‐Jin Park   +3 more
wiley   +1 more source

Nitrooxylation in Organic Synthesis: From Classical Nitrate Ester Formation to Modern Catalytic Strategies

Chemistry – A European Journal, EarlyView.
Nitrooxylation—the installation of nitrate esters (–ONO2) has evolved from classical mixed‐acid protocols to catalytic and mechano‐, flow‐, photo‐, and electrochemical strategies. This review delineates ionic and radical manifolds for C–ONO2 bond formation, emphasizing mechanistic control, selected substrate scope, and selectivity.
Jayanta Dey, Dmitry Katayev
wiley   +1 more source

Mit Oliven zur Batterie – Experimente zu Batterien mit unerwarteten Zutaten

CHEMKON, EarlyView.
Der Umstieg auf erneuerbare Energien erfordert neue Speicherlösungen. Besonders im Fokus stehen dabei die Energiespeicherung aus regenerativen Energietechniken wie Solar‐ und Windkraft. Auch hinsichtlich der Speichertechnologie soll auf Nachhaltigkeit gesetzt werden, um eine sichere und umweltschonende Energiespeicherung zu ermöglichen.
Dominique Rosenberg, Tom Severin Gabriel
wiley   +1 more source