Results 111 to 120 of about 184,000 (291)

Nanobiosensor Based on Catalytic Palladium Nanoclusters and Oxidases for Bianalyte Electrochemical Determination: Glucose and Ethanol in Sweat

open access: yesAdvanced Healthcare Materials, EarlyView.
A nanobiosensor for fast and simultaneous determination of sweat glucose and ethanol is presented. Deposited oxidase enzymes consume oxygen in the presence of the substrates, and co‐deposited palladium nanoclusters catalyze the electrochemical oxygen reduction, basis of the detection.
Alejandro Rodríguez‐Penedo   +3 more
wiley   +1 more source

Nanocomposite biosensor tracks honokiol-induced oxidative stress dynamics in 3D hydrogel-cultured lung cancer cells

open access: yesMicrosystems & Nanoengineering
In cancer cells, higher reactive oxygen species (ROS) than normal cells were observed due to hypermetabolism. The redox balance in cancer cells relies on accordingly upregulated antioxidant capacity.
Yuxuan Zhu   +9 more
doaj   +1 more source

A Microfluidic Chip for Cell Patterning Utilizing Paired Microwells and Protein Patterns

open access: yesMicromachines, 2016
Cell patterning has been widely used in research on fundamental cell biology and in applications such as tissue engineering, neuron network formation, cell based biosensor and drug screening.
Chunlong Tu   +7 more
doaj   +1 more source

Different Amyloid-β Self-Assemblies Have Distinct Effects on Intracellular Tau Aggregation. [PDF]

open access: yes, 2019
Alzheimer's disease (AD) pathology is characterized by the aggregation of beta-amyloid (Aβ) and tau in the form of amyloid plaques and neurofibrillary tangles in the brain.
Bitan, Gal   +6 more
core  

Advanced 3D Platforms for Modeling CNS Neuroinflammation: Cell Integration, Techniques, and Challenges

open access: yesAdvanced Healthcare Materials, EarlyView.
This review summarizes the roles of key central nervous system cell types, the extracellular matrix, and the blood‐brain barrier in neuroinflammation, and their integration into diverse 3D culture systems. It examines major incorporation strategies, including direct co‐culture, hydrogel encapsulation, transwell migration assays, and bioprinting ...
Emmanuelle D. Aiyegbusi   +2 more
wiley   +1 more source

Advances in Electrochemical Nanobiosensors for Noninvasive Stress Biomarker Detection

open access: yesSensors
Cortisol is a key stress-related hormone whose accurate monitoring is essential for assessing physiological responses. Traditional detection methods are invasive and impractical for continuous use.
Leonardo Messina   +2 more
doaj   +1 more source

Flexible Polypyrrole‐Based pH Sensors via Oxidative Chemical Vapor Deposition

open access: yesAdvanced Healthcare Materials, EarlyView.
Oxidative chemical vapor deposition (oCVD) of polypyrrole (PPy) thin films yields flexible, electrically conductive, and biocompatible pH sensors for monitoring on‐skin biological events. The highly sensitive, oCVD PPy skin‐conformal sensors enable real‐time, spatially resolved sensing of dynamic pH changes within physiologically relevant ranges (4–9 ...
Adrivit Mukherjee   +15 more
wiley   +1 more source

Molecularly imprinted polymers-based electrochemical sensors for tracking vitamin B12 released from spray-dried microcapsules during in vitro simulated gastrointestinal digestion

open access: yesSensing and Bio-Sensing Research
Highly sensitive detection of vitamin B12 (VB12) is crucial for assessing its bioavailability and diagnosing deficiency-related disorders. VB12 with 87.69 % efficiency was microencapsulated by spray drying complex coacervation-based emulsions of Arabic ...
Seyed Mohammad Taghi Gharibzahedi   +3 more
doaj   +1 more source

Electro‐Stimulated Graphene‐Polymer Nanocomposites Enable Wearable Patches With Feedback‐Controlled Drug Release

open access: yesAdvanced Healthcare Materials, EarlyView.
xx xx. ABSTRACT Stimuli‐responsive nanomaterials capable of spatiotemporal control over drug release are of nanocomposite patch (“e‐Medi‐Patch”) engineered from biodegradable polycaprolactone (PCL), graphene nanoplatelets, and a redox‐active therapeutic, niclosamide. The hierarchical composite integrates π‐π interactions between aromatic drug molecules
Santosh K. Misra   +7 more
wiley   +1 more source

Synergistic convergence of materials and enzymes for biosensing and self-sustaining energy devices towards on-body health monitoring

open access: yesCommunications Materials
Wearable enzyme-based biosensors enable advanced healthcare diagnostics through the monitoring of biomarkers and physiological states. The integration of materials engineering and enzyme conjugation has established the groundwork for advancements in ...
Suntisak Khumngern, Itthipon Jeerapan
doaj   +1 more source

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