Results 71 to 80 of about 315,385 (314)

Engineering a Single Amino Acid Bionanozyme for Ultrasensitive Detection of Biomarkers: A WHO‐REASSURE‐ Aligned Approach

Advanced Functional Materials, EarlyView.
A unique 2D bionanozyme, engineered from a single amino acid and copper ions, demonstrates peroxidase‐mimicking catalytic activity. This efficient and simple bionanozyme allows for ultrasensitive, equipment‐free visual detection of key biomarkers in both test and real samples, meeting the WHO‐REASSURE standards for practical diagnostic applications ...
Subrat Vishwakarma, Om Shanker Tiwari, Vijay Kumar Patel, Ruchi Shukla, Ehud Gazit, Pandeeswar Makam   +5 more
wiley   +1 more source

Hydrogen peroxide-independent generation of superoxide by plant peroxidase: Hypotheses and supportive data employing ferrous ion as a model stimulus

Frontiers in Plant Science, 2014
When plants are threaten by microbial attacks or treated with elicitors, alkalization of extracellular space is often induced and thus pH-dependent extracellular peroxidase-mediated oxidative burst reportedly takes place, especially at the site of ...
Makoto eKimura, Yosuke eUmemoto, Tomonori eKawano   +2 more
doaj   +1 more source

Evolving Platinum‐Copper Nanostructures for Enhanced Photothermal Therapy and Controlled Copper Release in Cancer Therapy

Advanced Functional Materials, EarlyView.
Platinum‐Copper bimetallic nanoparticles may evolve depending on their synthesis under tumor microenvironment conditions and play a dual role as chemotherapeutic agents after releasing Cu ions and as near infrared photothermal agents with the Pt‐rich remaining frames.
Jose I. Garcia‐Peiro, María Sancho‐Albero, Silvia Miguel, Andrea Mosseri, Felipe Hornos, Rafael Contreras‐Montoya, Jose L. Hueso, Jesus Santamaria   +7 more
wiley   +1 more source

Differential Compartmentalization of Enzymatic Reactions for Lactate Signaling Across Protocells

Advanced Functional Materials, EarlyView.
Two populations of protocells consisting of giant unilamellar vesicles containing active species and distinct artificial organelles are competent of collective behavior by mimicking production, intercellular communication, and detection of the bioinspired signal molecule lactate. Enzymatic cascade reactions within artificial organelles demonstrate that
Arianna Balestri, Xinan Huang, Emanuel Lörtscher, Cora‐Ann Schoenenberger, Cornelia G. Palivan   +4 more
wiley   +1 more source

Superoxide and superoxide dismutase in red blood cells.

The St. Luke's Hospital gazette, 1976
In 1969 a previously obscure copper protein of red blood cells, erythrocuprein, was shown to catalyse the dismutation of superoxide radicals. Erythrocuprein thus became superoxide dismutase and the object of intensive study. Superoxide dismutase is typically an enzyme of aerobic organisms which utilize oxygen as the major electron acceptor.
Anastasi, Angela, Bannister, J. V., Bannister, William H.   +2 more
openaire   +2 more sources

Cyanobacteria Scytonema javanicum and Scytonema ocellatum Lipopolysaccharides Elicit Release of Superoxide Anion, Matrix-Metalloproteinase-9, Cytokines and Chemokines by Rat Microglia In Vitro

Toxins, 2018
Cosmopolitan Gram-negative cyanobacteria may affect human and animal health by contaminating terrestrial, marine and freshwater environments with toxins, such as lipopolysaccharide (LPS).
Lucas C. Klemm, Evan Czerwonka, Mary L. Hall, Philip G. Williams, Alejandro M. S. Mayer   +4 more
doaj   +1 more source

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

Advanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri, Matilde Doardo, Ilaria Fortunati, Anna Fortunato, Elisabetta Collini, Francesca Arcudi, Luka Ðorđević   +6 more
wiley   +1 more source

Atmospheric Doping of Stretchable Polymer Semiconductors for Skin Electronics

Advanced Functional Materials, EarlyView.
An atmospheric doping system using oxygen molecules in air as dopants is introduced for stretchable polymer semiconductors. The chemisorbed oxygen molecules act as acceptor, lead to increase not only the hole concentration of the semiconductor film over two orders of magnitude (3.37 × 1017 cm−3) but also electrical properties of the field‐effect ...
Min Woo Jeong, Min Hyouk Kim, Jun Su Kim, Tae Uk Nam, Ngoc Thanh Phuong Vo, Kyu Ho Jung, Tae Il Lee, Jin Young Oh   +7 more
wiley   +1 more source

Chloramphenicol mediates superoxide production in Photosystem II and enhances its photodamage in isolated membrane particles

Frontiers in Plant Science, 2016
Chloramphenicol is an inhibitor of protein synthesis, which is frequently used to decouple photodamage and protein synthesis dependent repair of Photosystem II during the process of photoinhibition.
Ateeq Ur Rehman, Sandeesha eKodru, Imre eVass   +2 more
doaj   +1 more source

The particulate superoxide-forming system from human neutrophils. Properties of the system and further evidence supporting its participation in the respiratory burst. [PDF]

, 1976
Bernard Babior, J T Curnutte, B. Jane McMurrich   +2 more
openalex   +1 more source