Articles tagged with Nanoparticles
A new study found that nylon cooking bags and plastic-lined cups can release trillions of nanometer-sized particles into each liter of water they come into contact with. The levels of these particles are below regulatory limits for consumption, but still pose a potential health risk.
Researchers analyzed food-grade nylon bags and single-use beverage cups, finding that they release trillions of nanoparticles per liter when exposed to hot water. The average size of these nanoparticles was between 30-80 nanometers, with concentrations seven times higher from nylon bags than from beverage cups.
Rutgers scientists found that inhaled nanoparticles can migrate from the lungs to the placenta and possibly fetal tissues after maternal exposure throughout pregnancy. This discovery raises concerns about the potential health effects of nanoparticle exposure on human fetuses.
Scientists at OSU have developed a new nanotechnology approach for locating and removing endometriosis lesions using magnetic nanoparticles. These particles accumulate in lesions, making them easier to see via MRI, and can be heated to high temperatures, allowing for safe removal through non-invasive procedures.
Researchers at Ohio State University discover that carbon black nanoparticles are fatal to yellow fever mosquito larvae in standing water. The material accumulates on the larvae's head, abdomen, and gut, blocking basic biological functions.
A team of researchers used a new computer simulation to model the electrostatic self-organization of zwitterionic nanoparticles, which are useful for drug delivery. They found that including transient charge fluctuations greatly increased the accuracy, leading to the development of new self-assembling smart nanomaterials.
Researchers at Columbia Engineering and Brookhaven National Laboratory have developed a new high-resolution x-ray imaging technique to reveal the inner structure of novel nanomaterials. The tool, which provides 7nm resolution, has enabled them to study complex 3D architectures with unprecedented detail.
Researchers have developed a rapid COVID-19 test that uses molecularly imprinted polymer nanoparticles to detect SARS-CoV-2. The new test is more sensitive and works under extreme conditions than existing antibody-based tests, with preliminary results indicating it can detect a 6,000-times lower amount of the virus.
Researchers have developed a new potential COVID-19 treatment using decoy nanoparticles that mimic cells. These nanoparticles effectively inhibit viruses and bind them, rendering them inactive. The treatment has shown promise against drug-resistant variants, outperforming traditional treatments in some cases.
Researchers at University of Innsbruck and ETH Zurich propose a new concept for a high-precision quantum sensor using microcavities and levitated nanoparticles. By exploiting fast unstable dynamics, they demonstrate mechanical squeezing reducing motional fluctuations below zero-point motion.
Researchers at UC Riverside have discovered that curcumin promotes vascular endothelial growth factor (VEGF) secretion, helping to grow engineered blood vessels and tissues. The study uses magnetic hydrogels coated with curcumin-coated nanoparticles, which gradually release the compound without injuring cells.
Researchers at the University of Illinois Chicago have identified two distinct subtypes of neutrophils, with one subtype being a drug target for treating inflammatory diseases. The discovery paves the way for more targeted therapies that address chronic inflammation without suppressing anti-infection functions.
Scientists create nanoparticles coated in mannose to block production of scar-promoting protein in lung cells. The treatment holds promise for preventing severe lung scarring disease.
Researchers at Tel Aviv University developed a drug delivery system based on lipid nanoparticles that utilize RNA to boost personalized cancer care. The nanodrug enhances chemotherapy effectiveness and reinvigorates the immune system, increasing sensitivity to cancer cells.
Engineers at University of Illinois Chicago develop additive material to make inexpensive iron-nitrogen-carbon fuel cell catalysts more durable. The material scavenge and deactivate free radicals, reducing corrosion and degradation in fuel cells.
Researchers use DNA to program metal nanoparticles to assemble into new configurations, resulting in the discovery of three new crystalline phases. The approach enables symmetry breaking and creation of complex colloidal crystal structures with unique optical and catalytic properties.
A team of researchers from PNNL and UW successfully designed a bio-inspired molecule that directs gold atoms to form perfect nanoscale stars. The work is an important step toward understanding and controlling metal nanoparticle shape and creating advanced materials with tunable properties.
Scientists at Texas A¼M University have created water-stable, 2D covalent organic framework nanoparticles that can guide human mesenchymal stem cells to form bone tissue. The new technology has the potential to impact the treatment of bone regeneration and improve drug delivery.
The study demonstrates the potential of using 'translating' nanoparticles to facilitate communication between bacteria and yeast, enabling applications in medicine, agriculture, and synthetic biology. The team's findings pave the way for regulating interactions between bacteria and human cells.
The team's research uses graphene quantum dots with zwitterionic properties to stabilize Pickering emulsions, allowing for controlled release and improved durability in firefighting operations. This technology holds promise for enhanced oil recovery and drug delivery.
Researchers have created ultra-uniform nanodiamonds using a new chemical process that mimics the conditions found in natural diamond formation. The tiny crystals are crucial for drug delivery, sensors, and quantum computer processors. With this breakthrough, scientists can now control single atoms within larger structures.
Researchers have created a new type of colon tattoo ink that is more biocompatible and less prone to diffusion than existing inks. The ink uses metal-derived nanoparticles and polymers to adhere to the submucosal surface in the colon, allowing for better identification and removal of complex polyps and tumors.
Researchers at the University of Illinois created quantum dots to visualize macrophages in fat tissue, shedding light on chronic inflammation's role in diseases. The new technology enables accurate cell counting and tracking over time, offering a potential diagnostic tool for insulin resistance and metabolic syndrome.
Engineer Thomas Senftle at Rice University has won a prestigious NSF CAREER Award to improve catalysts through machine learning. He will develop open-source models to speed up the development of catalysts with optimized particle/support combinations, aiming to reduce unwanted molecules in water.
Scientists develop first system allowing two unrelated organisms to communicate via chemical signals, with potential applications in disease treatment and cell behavior modification. The nano-translator uses silica nanoparticles to react with glucose and phleomycin, enabling bacteria and yeast to exchange messages.
Researchers review current status of nanoparticle-enhanced photothermal therapy and photodynamic therapy, combining the two techniques to achieve highest treatment efficiency. Nanoparticles can deliver drugs or antibiotics to inaccessible sites, creating a more powerful treatment method.
Physicists simulate acoustic propulsion of freely orientable nanoparticles by traveling ultrasound waves, finding that particle orientation affects propulsion. The study reveals important properties of acoustically propelled nanoparticles suitable for biomedical applications.
Researchers at Massachusetts General Hospital found that using nanomedicines at lower, more frequent doses can normalize the tumor microenvironment and improve cancer treatments. The study showed that this approach can help correct abnormalities that protect tumors and improve blood vessel function and immune activation within a tumor.
A biodegradable nanoparticle has shown promise in reducing skin and lung scarring in mice with scleroderma. The treatment targets specific immune cells responsible for the disease's chronic inflammation and scarring.
Scientists have created a supramolecular template using dendron-assembled structures to synthesize quasi-sub-nanoparticles with controlled atomicity. This approach offers a cost-effective and versatile method for producing a variety of nanostructures.
Scientists have created a 'greener' way to clean wastewater treatment filters by using glucose-based nanoparticles, which effectively remove contaminants without destroying the membrane. The new system is more cost-effective and environmentally friendly than traditional methods.
Researchers from Osaka University report a new technique for tracking the synthesis of core–shell bimetallic nanoparticles in real time, allowing for fine-tuning of nanomaterial preparation. The technique uses a piezoelectric resonator to monitor particle shape changes and track interdiffusion of metals.
Scientists have developed a simple methodology for synthesizing novel β-SiC nanoparticle-based anode materials for lithium-ion batteries. These materials exhibit high current density, rated capacity and promising compatibility for reversible lithium-ion storage.
Researchers at RIKEN CSRS have developed a non-transgenic method to modify plant genes using a bioactive molecule spray, which can be used to improve crop yield and resistance to pests. The technique has shown promising results in improving economically desirable quality traits in crops.
Scientists at Japan Advanced Institute of Science and Technology have created nanoengineered bacteria for photothermal cancer immunotheranostics. The synthesized nanoparticles showed powerful photothermal conversion, high biocompatibility, and excellent tumor selectivity, facilitating clear fluorescent tumor visualization.
Researchers at UCSC developed a simple method to make aluminum nanoparticles that split water and generate hydrogen gas rapidly. The gallium-aluminum composite creates aluminum nanoparticles that react with water at room temperature, yielding large amounts of hydrogen.
Researchers at MIT have performed a systematic study on how different-sized polymer nanoparticles circulate in the body and interact with platelets to stop bleeding. They found that intermediate-sized particles (150 nanometers) were the most effective, with less likelihood of accumulating in off-target sites.
Rice University's Gang Bao receives $1 million CPRIT grant to develop a three-pronged strategy combining magnetic nanoparticles, free radical generation, and immune checkpoint blockade to kill cancer cells. The approach aims to increase the efficacy of cancer therapy, potentially leading to a clinical trial.
Scientists at Tufts University create nanoparticles that carry genetic instructions to specifically target the lungs, reducing tumors in a preclinical model of a rare genetic lung disease. The breakthrough could lead to improved treatment options for patients with lymphangioleiomyomatosis.
Researchers at Tokyo University of Science have developed bionanoparticles derived from corn that selectively target and inhibit the growth of cancer cells, inducing tumor necrosis factor-α release. These findings suggest a novel, economical, and safe anti-cancer therapy approach.
Researchers have developed a new system called Species Agnostic Nanoparticle Delivery Screening (SANDS) that improves the screening process for drug-delivering nanoparticles. SANDS allows for simultaneous testing of nanoparticles in mouse, primate, and human cells, enabling more accurate predictions of delivery in humans.
A team of researchers has reprogrammed the tumor microenvironment of liver cancer by using mRNA nanoparticles, restoring the function of the p53 master regulator gene. The approach increased antitumor immune responses in hepatocellular carcinoma laboratory models and shows promise for treating HCC and other cancers.
Researchers found nanoparticles from human activities rapidly grow in atmosphere and influence cloud formation, affecting raindrop formation and changing rainfall regime. The study provides new insights into the impact of small aerosols on precipitation and improves climate change studies based on mathematical models.
A study published in Nature Communications reveals that Schwann cells in the peripheral nervous system generate pain signals during migraines. Blocking these signaling pathways using nanoparticles offers promise for novel migraine treatments.
Researchers have designed a nanoparticle system that can deliver fluorescent dyes to diagnose and treat pancreatic cancer tumors. The system overcomes the challenge of reaching cells deep within dense tumor masses, enabling detailed images of tumor structures and potentially targeted therapies.
Researchers have identified the impact of protein corona formation on nanoparticles' physiochemical and biological properties. This knowledge can be used to optimize carriers for nanomedical applications, improving the efficiency and effectiveness of biopharmaceutical delivery.
The novel vaccine combines immune focusing and self-assembling nanoparticles to elicit a strong protective response. In animal studies, it showed higher levels of neutralizing antibodies than existing vaccines and protected mice from death in lethal challenge experiments.
Scientists at UC Riverside and UCLA have engineered nanoparticles to serve as 'molecular traps' that bind to SARS-CoV-2, preventing it from attacking macrophages and inducing inflammation. The findings suggest potential therapeutic strategies for treating COVID-19-associated diseases.
A new intranasal flu vaccine constructed with nanoparticles has been shown to offer strong protection against different influenza virus strains in mice. The vaccine elicited multifaceted immune responses, leading to robust cross-protection and long-lasting defense.
Researchers have developed a novel combination of two drugs delivered in nanoparticles that extend the survival of mice with medulloblastoma. The treatment targets the mTOR pathway and reduces off-target toxicity, making it a potential less toxic alternative to current treatments.
Researchers detected 43 trillion miniature plastic particles in Switzerland every year, with estimates suggesting up to 3,000 tonnes of nanoplastics covering the country annually. The study reveals that nanoplastics originate primarily from urban areas and global emissions, posing potential health risks when inhaled.
Janus particles, with two distinct physical chemical properties, exhibit unique behavior in simulations. Their shape significantly influences their orientation at interfaces and mobility, impacting rheology and processing schemes.
Researchers at TTUHSC developed novel hydrophilic nanoparticles that target bacterial membranes, killing pathogens while sparing mammalian cells. The nanoantibiotics' size-dependent activity reveals a new blueprint for developing non-toxic and environmentally friendly antibiotics.
Researchers have created a new, simpler way to fabricate SERS nanostructures with superior stability and performance at low cost. By using a heat-resistant polymer called polyimide (PI), they can produce nanosurfaces with nanopillars that enhance signal intensity for efficient chemical detection. The new fabrication method has the pote...
Researchers developed a novel polymeric nanoparticle that selectively binds to fibrinogen in human plasma, offering a simpler and less expensive way to manufacture fibrinogen concentrate. This breakthrough could lead to the creation of more efficient fibrinogen-specific affinity reagents for drug development.
Researchers at Penn Medicine have discovered a new method to prevent the body's proteins from attacking treatment-carrying nanoparticles, allowing for more effective delivery of therapies. By coating nanoparticles with natural suppressors of complement activation, such as Factor I, the team has shown improved protection against immune ...
Scientists develop hairy cellulose nanocrystals to capture and remove excess chemotherapy drugs from the blood. The nanocrystals effectively removed over 6,000 milligrams of doxorubicin per gram, increasing DOX capture by two to three orders of magnitude compared to existing methods.
Researchers at Japan Advanced Institute of Science and Technology develop a novel strategy to quickly separate intact lysosomes with high purity using magnetic-plasmonic hybrid nanoparticles. The technique allows for rapid extraction of lysosomes from cells, reducing the time required compared to existing methods.
Researchers developed a method to enhance the conductivity of metal nanowire electrodes by using plasmon-enhanced laser nanosoldering. The technique involves irradiating silver nanoparticles with a high-intensity laser, creating hot spots that increase the contact area between particles and improve conductivity.
Researchers developed a color-coded test that quickly signals whether medical nanoparticles deliver their cargo into target cells. The tool, tested in mouse cells and living mice, assesses nanoparticle formulations on their ability to escape cellular defenses and reach the cell's interior.