Articles tagged with Ion Channels
Researchers identified an ion channel that opens and closes in response to extracellular potassium ions in fruit flies, and found similar functionality in humans. This discovery reveals a novel sensor for extracellular K+ levels, potentially linking to diseases like epilepsy.
A study found that elevation of artemin could serve as a disease marker and potential therapeutic target for osteoarthritis in cats. The researchers confirmed that TRP channels commonly associated with osteoarthritis pain were expressed and functional in healthy cat DRG neurons, and increased artemin blood concentrations were correlate...
Researchers reveal that skin-cell calcium channel TRPV3 is activated by plant-derived fragrant molecules, leading to enhanced immune responses and potential new vaccine adjuvants. The study provides a novel understanding of immune crosstalk and offers a safer approach to enhancing vaccine efficacy.
Researchers at Scripps Research Institute have discovered how the body detects light touch, revealing a key protein's unique structure and function. The study, published in Nature, sheds light on sensory disorders linked to PIEZO2 mutations, suggesting a new pathway for treating these conditions.
Potassium KCNQ2/3 channels need full functionality to work properly in the brain and reach their correct location. This is linked to their regulation by protein ankG. Altering channel functionality affects neuronal excitability and may contribute to developing new therapeutic strategies for epilepsy.
Researchers discovered that TRPV4 acts as part of the nervous system's internal stop-scratching circuit, triggering a negative feedback signal to regulate itch behavior. Mice lacking neuronal TRPV4 scratched less frequently but with longer-lasting itchy bouts.
Researchers have found that proteins vital for sound signal transmission in the ear also manage the fatty molecules on the cell membrane. When these proteins malfunction, it can trigger permanent hair cell death and lead to hearing loss.
Researchers at Kyoto University have directly captured intermediate structural states of the Na⁺-NQR enzyme using cryo-electron microscopy and molecular dynamics simulations. The study reveals that redox reactions drive sodium ion transport by changing the enzyme's structure, allowing ions to pass through the bacterial cell membrane.
Chemists at UMass Amherst demonstrated that the soft gate regulating electrical flows in BK channels is inherently leaky, meaning it can't absolutely stop the flow of ions. This discovery points to a method for understanding how these channels work and malfunction.
The FXYD family proteins have diverse physiological and pathological roles, influencing ion transport in different organs and tissues. Altered expression or dysfunction of these proteins is associated with numerous diseases, including cardiovascular, neurological, renal, and cancer disorders.
Researchers at Ritsumeikan University have discovered that the loss of TRPM1 ion channels sets off a cascade of changes leading to persistent oscillations in the retina. This finding illuminates the cellular basis of congenital stationary night blindness and identifies a common mechanism underlying retinal degenerative conditions.
Scientists have captured detailed images of NMDA receptors held open by natural gatekeepers and synthetic regulators, revealing how they control ion flow. This understanding can inform the design of safe and effective therapies for conditions like Alzheimer's disease and stroke.
Research team from Toho University discovered that docosahexaenoic acid (DHA), a major omega-3 fatty acid, directly relaxes smooth muscle in the male reproductive tract by blocking specific calcium channels. This finding may help explain DHA's broader health benefits and suggest potential new approaches to treating male infertility.
Researchers identify PIEZO2-expressing fibroblasts as key drivers of keloid formation and recurrence. These cells sense mechanical pressure, leading to excessive collagen production and scarring. The study's findings hold significant implications for future diagnosis and treatment options.
Scientists have found that the ion channel GtACR1 can exist in two light-activated states, enabling quicker reopening and increased ionic conductivity. This discovery has significant implications for optogenetics, a method of controlling neuronal cells using light.
Researchers have uncovered how PAF triggers esophageal muscle contraction, revealing that non-VDCC channels, particularly Orai1, are key drivers of this process. This finding could lead to more effective treatments for esophageal and gastrointestinal symptoms in allergic conditions.
Researchers at Vrije Universiteit Brussel have developed a method to express and study Nav1.9, a channel protein linked to pain and itch. This breakthrough paves the way for targeted therapies without opioids' downsides, offering new hope for treating unexplained pain symptoms.
Researchers have identified a mechanism involving potassium channels that could provide a new approach to treating depression. The study, led by Dr. James Murrough, found that ezogabine improved depression symptoms and anhedonia in patients, normalizing brain activity in key regions.
Researchers have accurately simulated ion channel currents using atom-by-atom computational models, settling a decades-long scientific debate. The findings reveal that up to four potassium ions line up in the channel like pearls on a string, enabling rapid conduction and exquisite selectivity.
A study published in the Journal of Pharmacological Sciences has discovered that ferulic acid can help prevent coronary artery spasms. The compound works by blocking calcium entry into muscle cells and stopping a specific protein from being activated, leading to reduced artery contractions.
Researchers at Osaka Metropolitan University identified the CcMCA1 gene as a key player in the development of haustoria, structures that allow Cuscuta campestris to feed on host plants. Suppressing this gene expression can reduce the number of haustoria per centimeter, offering potential for controlling invasive plant species.
Researchers have developed novel membranes that can pull lithium directly out of salt-lake brines using electricity, leaving other metal ions behind. The process could reduce the environmental impact of lithium mining and contribute to more efficient energy storage systems for renewable energy sources.
Researchers found that a well-connected network of water molecules and dynamic shells around ions, rather than excess free water, enables fast ion transport across the membrane. This optimization could lead to more efficient fuel cells, better batteries, and sustainable energy storage solutions.
Researchers from the University of Göttingen have discovered a molecular 'spring' that triggers the opening of ion channels in sensory hair cells of the ear. The findings provide new insights into how hearing begins at the molecular level and shed light on the function of ion channels.
Researchers developed Janus-type supramolecules that form stable ribbon-type assemblies, guiding the arrangement of ion channels across lipid membranes. The supramolecular channels mediate efficient and selective K+ transport, disrupting cancer cell balance and inducing apoptosis.
Researchers have uncovered ketamine's mechanism of action, revealing how it affects the brain's NMDA receptors. The study provides hope for synthesizing new versions of the drug with fewer harmful side effects.
Researchers discovered special proteins that keep tiny particle membranes intact during transport, and found these proteins influence cargo function. Animal experiments showed ion channel protein is crucial for repairing heart damage in mice.
A new study has unveiled how stem cells respond to their environment, with implications for inflammatory bowel disease and colorectal cancer. Stem cells rely on PIEZO1 and PIEZO2 ion channels for survival, and loss of these channels leads to severe illness and rapid death.
Researchers at Washington State University have discovered a way to accelerate ions in mixed organic ion-electronic conductors, setting a new world record for ion speed. This breakthrough could lead to improved battery charging, biosensing, and neuromorphic computing.
Researchers found inorganic nanostructures surrounding deep-ocean hydrothermal vents that mimic molecules essential for life. These structures can harness energy and convert it into electricity, sparking interest in applying this technology to industrial blue-energy harvesting.
A new individualized risk prediction tool has been developed to predict the severity of heart disease in people suffering from Long QT syndrome. The test analyzes genetic mutations associated with the condition and can identify those at high risk of sudden cardiac death, allowing for tailored treatment.
Research reveals TRPV4 complex promotes sweat secretion in mouse foot pads, suggesting its potential role in human perspiration. The study also suggests that TRPV4 may regulate friction forces, which could impact traction on hind paws.
Researchers from PSI and ETH Zurich studied connexin-36 gap junction channels and found that antimalarial drug mefloquine binds to the channels, potentially explaining its severe side effects. The study provides new insights into how drugs interact with connexins and may lead to the development of therapies for neurological diseases.
Researchers have discovered that menthol sensing appeared before cold sensing in the human TRPM8 protein, suggesting distinct activation modes. This finding paves the way for new pain therapies without adverse thermal side effects.
Scientists at Johns Hopkins Medicine have discovered the mechanism of action of the widely-used epilepsy drug perampanel, which targets the AMPA receptor to dampen brain cell excitability. The study provides new insights into the potential applications of perampanel in treating other neurological conditions such as Alzheimer’s disease,...
A team from Osaka University demonstrates greater control of ion passage through a nanopore membrane by applying a voltage to a gate electrode. This leads to a six-fold increase in osmotic energy efficiency and a power density of 15 W/m^2, enabling the potential for scaling up the technology.
Researchers found that viral infections like adenovirus create conditions for arrhythmias by disrupting gap junctions and ion channels in the heart. This discovery opens new directions to diagnose and treat viral infections affecting the heart, particularly for individuals with acute infections.
Researchers used advanced techniques to study TMEM16F's structure and function in its native environment, uncovering previously overlooked structural conformations. The study reveals a dynamic and flexible functioning of the protein, essential for regulating cell functions such as blood coagulation and immune defense.
Scientists at UCSF discovered a new way to test for autism by measuring how children's eyes move when they turn their heads. Children with severe autism have an unusual form of the vestibulo-ocular reflex, which can be measured with a simple eye-tracking device.
TMEM16F, a transmembrane protein, exhibits a wide range of structural conformations that enable its diverse functions. The study reveals unexpected changes in dimerization interface and subunit arrangements, suggesting a dynamic and versatile mechanism for lipid scrambling and ion movement across the cell membrane.
Researchers have identified a novel insect repellent, 2-methylthiazoline (2MT), which induces robust aversive responses through multiple sensory pathways in fruit flies. The compound stimulates both olfactory and nociceptive pathways, leading to avoidance behaviors and effective repulsion from fly pests.
Scientists have found that by controlling ion flow through nanopores, they can achieve cooling. At high concentrations, increased heat was measured, but at low concentrations, negatively charged ions interacted with the nanopore wall, resulting in a decrease in temperature.
Researchers at the University of Iowa have discovered that rare lung cells called pulmonary ionocytes mediate chloride and water absorption in airway surfaces. This unexpected function challenges previous assumptions about cystic fibrosis treatment.
Researchers used solid-state NMR to study the Fluc channel protein and discovered a new fluoride ion permeation model. The findings provide insights into the gating mechanisms in the Fluc channel, shedding light on its functionality.
Researchers at UC Santa Cruz have created a device that mimics biological channels to detect biomolecules indicative of human disease. The bioprotonic system uses electrical currents of protons to translate biomolecule presence into electronic signals, with potential applications for in-vitro and clinical settings.
Scientists have identified a molecule that regulates nerve cell sensors, which could lead to new therapeutics for obesity, osteoporosis, and inflammatory diseases. The molecule can be modified into peptide-based therapeutics to boost the activity of channels involved in bone strength and satiety.
Researchers discovered that STING, a critical immune regulator, can act as an ion channel to control immune responses. This new function allows STING to translate danger signals into ion flow, activating various defense mechanisms.
Researchers at Weill Cornell Medicine developed a non-opioid designer molecule to calm hyperactive pain-sensing neurons, showing promising results in preclinical studies. The novel drug effectively reversed neuropathic pain signs without cardiac side effects or sedation.
A team of scientists has successfully elucidated the structure and function of LITE-1, a biomolecule used by Caenorhabditis elegans to detect danger. The researchers used artificial intelligence to predict the structure of LITE-1, which is a channel protein that forms a pore in the cell membrane allowing charged particles to pass through.
Researchers have successfully grown high-quality single-crystalline T-Nb2O5 thin films with two-dimensional vertical ionic transport channels, enabling fast and dramatic changes in electrical properties. The material undergoes a significant electrical change upon Li insertion, allowing it to switch from an insulator to a metal.
Researchers develop an ionic device utilizing redox reactions to achieve a high number of reservoir states, enabling efficient complex nonlinear operations. The device demonstrated remarkable performance in solving second-order nonlinear dynamic equations and predicting future values with low mean square prediction error.
Researchers at Tokyo Institute of Technology have successfully synthesized high-quality Cs3Cu2I5 thin films using a novel solid-state synthesis method. The team discovered that depositing CuI and CsI layers in specific ratios results in distinct local structures containing point defects, leading to highly efficient emissions.
Researchers at Harvard Medical School discovered a new cellular sensor that allows dormant bacteria to detect nutrients and quickly spring back to life. This breakthrough could inform the design of ways to prevent dangerous bacterial spores from lying dormant for months before waking up again and causing outbreaks.
Scientists have developed a system called PhAST, which uses light-emitting enzymes and ion channels to transmit information between neurons. This method has shown promising results in restoring communication in defective circuits and modifying animal behavior.
Researchers from PSI deciphered the structure of an ion channel found in the eye while interacting with calmodulin, a protein that enables cell response to calcium fluctuations. This interaction is believed to be responsible for achieving remarkable sensitivity to dim light.
A new study led by Marshall University researchers has revealed that the Xie model for NKA receptor/signaling is a key player in regulating sodium balance. The study found that NKA signaling tonically inhibits sodium reabsorption in the renal proximal tubule, shedding light on a novel mechanism of body salt handling.
Researchers found that dexamethasone prevents cytokine storms in severe COVID-19 patients by inhibiting ion channels and reducing immune cell inflammation. This led to improved lung function and reduced mortality rates. The study's findings provide new insights into the mechanisms of steroid treatment in severe COVID-19.
Researchers at the University of Illinois Grainger College of Engineering have successfully integrated arrays of electrochemical random-access memory (ECRAM) onto silicon transistors, creating a practical AI accelerator. This innovation eliminates energy costs associated with data transfer and enables efficient deep learning operations.
Researchers from Linköping University found that estrogen impairs the function of a specific ion channel, Kv7.1/KCNE1, which is associated with long QT syndrome and arrhythmia. This suggests that estrogen may be a risk factor for certain types of heart rhythm disturbances in women with hereditary mutations.
A group of researchers from Osaka University has shown that the segregated function of a messenger ion (Ca2+) can help improve our sense of smell. The study reveals that Ca2+ signaling plays a crucial role in regulating the amplification and reduction of sensory signals, and its processes are clearly segregated within a tiny structure ...