Articles tagged with Sodium Channels
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.
New research suggests that ocean turbulence and horizontal stirring will dramatically increase in the Arctic and Southern Oceans due to human-induced Global Warming. The study uses ultra-high-resolution simulations to investigate how mesoscale horizontal stirring (MHS) responds to warming, revealing a pronounced future intensification ...
Scientists at the University of Surrey have discovered a simple way to boost sodium-ion battery performance by leaving water in key component. The new material, nanostructured sodium vanadate hydrate, showed significant improvements in charge storage, charging speed, and stability, even in saltwater.
This study found that GLP-1RAs and SGLT2is offer the greatest cardiovascular benefits for adults with type 2 diabetes. The magnitude of benefit depends on baseline age, atherosclerotic cardiovascular disease, heart failure, and kidney impairment.
A new study reveals that paracetamol blocks pain signals before they reach the brain by acting on nerve endings. This discovery opens the door to developing safer pain treatments. The active metabolite AM404 targets specific sodium channels in pain-sensing neurons, stopping pain signals.
A new gene therapy has shown promise in treating a rare form of epilepsy, specifically Dravet syndrome, by replacing the SCN1B gene variant. The therapy increased survival rates, reduced seizure severity, and restored brain neuron excitability in mice with the condition.
A new compound, V-161, has been discovered to effectively inhibit the growth of vancomycin-resistant Enterococci (VRE) by targeting a crucial enzyme. The study reveals that V-161 not only disrupts the enzyme function but also reduces VRE colonization in the mouse small intestine.
Researchers from University of Queensland discovered a toxin in ant venom that causes extreme pain by hyperstimulating sodium channels. The study uses electrophysiology and pharmacology to understand the mechanism, which may also apply to other insects like wasps and bees.
Researchers discovered that sodium channels allow cancer cells to grow and spread by increasing energy production and producing lactic acid, which breaks down the extracellular matrix. Blocking these channels may be an effective way to slow cancer growth and prevent metastasis in breast cancer patients.
Researchers identified a spectrum of effects on sodium channel function due to SCN2A variants, with hyperactive channels linked to early seizure onset and underactive channels associated with autism. The study provides insights into the relationship between genetic changes, disease severity, and age of seizure onset.
Researchers have discovered a direct link between the C122Y mutation in the Kir2.1 potassium channel and life-threatening arrhythmias in Andersen-Tawil syndrome, which affects fewer than 1 in a million people. The study highlights the importance of understanding the molecular mechanisms underlying cardiac arrhythmias.
A team of scientists at Kanazawa University used high-speed atomic force microscopy to study the structural dynamics of sodium ion channels in cell membranes. They found that voltage sensor domains can dissociate from pore domains when the channel is in a resting state, leading to dimerization between neighboring channels. These findin...
Scientists have witnessed nerve plasticity in the axon for the first time, capturing the process of adaptability in real-time. The discovery sheds light on how the brain adjusts its structure in response to changes in neural activity.
A team of neurobiologists has found that fruit flies possess glial sheath structures similar to those in vertebrates, enabling rapid transmission of nerve impulses. The study reveals the evolution of these structures and their role in supporting neuronal function.
Researchers at Simon Fraser University and the Lankenau Institute for Medical Research have developed a new drug, AR-787, that shows promise in treating conditions leading to sudden cardiac death. The drug targets a protein in the heart called the cardiac sodium channel, which is essential for electrical impulse conduction. By inhibiti...
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.
Two new species of poisonous birds have been discovered in New Guinea's rainforest, containing a neurotoxin similar to that found in South American poison dart frogs. Genetic changes in these bird species allow them to tolerate and store the toxin in their feathers, potentially serving as a defensive mechanism.
Researchers found variable voltages in breast cancer cell membranes, which may indicate an electrical communication network between cells. This discovery could lead to new treatments by disrupting this network, potentially making cancer cells easier to treat.
A recent study led by Dr. Luis Cuello and Alain J. Labro found that a known Shaker channel mutation differs structurally from its human counterparts, with implications for drug development and ion transport mechanisms. The research reveals a unique conformation of the W434F mutant that is distinct from wild-type channels.
Scientists have identified a protein that regulates cancer cell spread and normal tissue cell shedding, potentially leading to new treatments. The research suggests that metastasis is not an abnormal process limited to cancer but a normal process used by healthy cells.
Researchers at UC Davis aim to develop monoclonal antibodies that can bind to specific ion channels in nerve cells, inhibiting pain signal transmission. The goal is to create a monthly, non-addictive pain medication to replace opioids, which can lead to addiction.
A study reveals that four nonexcitatory amino acids can cause irreversible brain destruction after a stroke or traumatic brain injury. The amino acids flood the brain cells, leading to swelling and cell death.
Researchers discovered how electric fish evolved electric organs by modifying a sodium channel gene. The finding highlights the potential for this genetic mechanism to contribute to human diseases. By studying electric fish, scientists can gain a better understanding of evolutionary processes and their applications in human health.
A wireless pacifier developed by researchers at Washington State University can monitor infants' electrolyte levels without the need for invasive blood draws. This non-invasive method provides real-time monitoring of sodium and potassium ion concentrations in saliva.
Researchers at the University of Tokyo have created a fast and efficient method for purifying saltwater using fluorine-based nanostructures. The new technology outperforms existing desalination methods, requiring less pressure, energy, and time to produce clean water.
The study reveals a novel technique using ammonium ions to observe ions in the selectivity filter of ion channels for the first time. This breakthrough enables researchers to investigate pharmacological effects and gain new perspectives on ion channel research.
Biomedical engineers at Duke University have developed a gene therapy that helps heart muscle cells electrically activate in live mice. The approach features engineered bacterial genes that code for sodium ion channels, which could lead to therapies to treat electrical heart diseases and disorders.
A recent study published in Cell Reports reveals that genetic variants in the Nav1.2 sodium channel are a leading cause of autism, leading to overactive sodium channels and seizures. Researchers propose developing medicines to open potassium channels as a potential treatment for these patients.
Researchers have discovered that toxic animals produce 'toxin sponges' to mop up deadly toxins and prevent them from binding to vital proteins. This alternative autoresistance strategy may offer a general means of toxin protection, including the development of antidotes against various toxic agents.
Researchers have identified a new potential treatment for IBS pain, derived from tarantula venom. In mice experiments, the molecule Tsp1a significantly reduced symptoms associated with chronic IBS pain, without interfering with other body functions.
Researchers discovered subtle changes in potassium, calcium, and sodium levels regulate heartbeats. Increasing sodium and calcium levels together reduces distances between cells, improving cardiac conduction.
A team of researchers from the University of Fukui and Kanazawa University have challenged the long-held assumption that potassium channels are highly selective for potassium ions. Their findings indicate that sodium ions can also pass through these channels, with a conductance one-eightieth that of potassium ions.
Researchers have identified the molecular mechanism by which tarantula venom traps voltage sensors on sodium channels, effectively immobilizing nerve signals. This finding may lead to the development of new pain therapeutics that target the Nav1.7 channel, a key player in pain transmission.
Researchers discovered a link between gene mutations in SCN2B and SCN4B genes and cardiac arrhythmias. The study sheds light on the role of sodium V channels in maintaining heart function and may lead to new treatments for cardiac syndromes.
Nieng Yan's research program aims to solve the structure of ion channels and membrane transporters using cryo-EM. Her lab has produced valuable rewards, including structures of proteins involved in diseases such as Niemann-Pick disease type C.
Researchers discovered that perchlorate blocks a key route for iodide to enter thyroid cells, leading to reduced hormone production and potential health issues. The study suggests an acceptable safe concentration of perchlorate in drinking water is 10 times less than previously believed.
Researchers at Johns Hopkins Medicine found that perchlorate blocks the sodium/iodide symporter, reducing iodide transport into thyroid cells. The study suggests an acceptable safe concentration of perchlorate in drinking water is 10 times less than previously believed.
A new therapy called antisense oligonucleotide (ASOs) has shown dramatic effects in a mouse model of SCN8A-related encephalopathy, reducing mRNA expression by half and increasing lifespan by four-fold.
Researchers found that low oxygen levels cause abnormal sodium currents that lead to dangerous cardiac rhythms. The discovery offers new targets for therapeutics to prevent late current and arrhythmia associated with heart attacks, chronic heart failure and other life-threatening conditions.
Scientists reveal key details about how sodium channels power heartbeats and respond to heart rhythm drugs. The study provides a blueprint for understanding cardiac sodium channels, revealing characteristics that distinguish them from other ion channels.
A team of UC Davis researchers led by Vladimir Yarov-Yarovoy is developing a new class of peptides to treat chronic pain with minimal side effects. The goal is to identify the most effective peptide design that can selectively block pain-associated sodium channels without affecting other channels.
Researchers from Joslin Diabetes Center have identified a genetic factor linked to the development of diabetic peripheral neuropathy. The study suggests that people carrying a specific variant in a sodium channel may be protected from the complication, providing a potential target for pharmacological therapy.
Researchers at UC Davis developed a novel simulation that provides insights into vital atomic-scale drug-cardiac cell interactions. The study advances the development of new antiarrhythmic drugs targeting voltage-gated sodium channels, which can help predict individual patient responses to drug therapy.
Researchers have developed new tools for controlling specific cells in the brain using light, enabling the study of individual neurons within complex networks. The new protein pores allow for switching neurons on or off using light, opening up new possibilities for probing brain function.
Researchers at OHSU have discovered the three-dimensional structure of a membrane channel critical in controlling blood pressure. The breakthrough provides a starting point for developing better treatments for diseases associated with this channel, including severe hypertension and heart failure.
A researcher is studying a heart mutation that can lead to sudden cardiac death and other heart conditions. The scientist found a parallel process of conduction called ephaptic coupling that helps maintain heart rhythm even when gap junctions are lost.
Researchers discovered a link between SCN1A gene mutations and cardiac arrhythmias in epilepsy patients with Dravet syndrome, which may trigger sudden unexpected death. The study found that even after removing the mutated gene, an increase in sodium current occurred, leading to potential heart problems.
Researchers have developed a concept to preferentially inhibit pain-transmitting neurons using direct electrical current. The new approach could reduce side effects of conventional devices, allowing for more precise targeting of pain-transmitting nerve cells.
A team of researchers has identified the gene that enables electric fish to generate high-frequency electrical discharges, a phenomenon seen only in Apteronotid fish. This discovery sheds light on the evolution and function of specialized sodium channels in these animals.
Researchers found that non-selective ion channels, like the NaK channel, have a selectivity filter with sizeable dynamics, unlike selective channels. The study revealed two different forms of the selectivity filter, one for each ion type, which explains why the NaK channel can pass both sodium and potassium ions.
Scientists at Michigan State University have discovered a key to designing more selective pesticides that target pests without killing beneficial insects like bees. By understanding the molecular differences between mammals and insects, they hope to create new chemicals that spare bees while effectively controlling agricultural pests.
A study discovered how poison-dart frogs avoid self-intoxication despite storing toxic batrachotoxin in their skin. The key finding involves a specific amino acid replacement that confers resistance, allowing adult frogs to store over 1 mg of toxin.
Researchers have discovered a novel substance that may effectively treat trigeminal neuralgia, a chronic nerve pain condition. The substance, BIIB074, inhibits the sodium channel 1.7, reducing pain intensity without burdening side effects.
A new study by UC San Francisco researchers reveals that distinct sets of genetic defects in a single neuronal protein can cause either infantile epilepsy or autism spectrum disorders. The study identifies SCN2A as the human gene with the strongest evidence for a causal role in driving ASDs.
The MacKinnon lab has reconstructed the three-dimensional architecture of three molecular channels using cryo-electron microscopy. The findings reveal intricate details about how these channels function, with implications for understanding muscle contraction, heart rhythm, and other physiological processes.
Researchers at Duke University have successfully delivered bacterial genes to human cells, enhancing electrical signaling and making cells more excitable. The technique could one day be used to treat cardiac arrhythmia, restore electrical functions to scarred tissues, or improve conductivity in genetic diseases.
A joint research group found RNA abnormalities in the sodium channel in the heart as the cause of heart arrhythmia in myotonic dystrophy. This discovery will help prevent death and develop new treatments for the disease. Abnormalities in RNA splicing lead to various conditions, including cardiac sodium channel dysfunction.
Researchers have discovered two tarantula toxins that target a previously unknown pain pathway in sensory nerves, potentially leading to new drugs for treating chronic pain. The toxins also represent a broadly applicable tool for selectively manipulating sodium channels implicated in numerous neurological disorders.
Researchers have found a way to control heart muscle cells using laser radiation, which could lead to new treatments for arrhythmia. The study used azoTAB molecules and found that controlling the ion channels in cardiomyocytes can reduce abnormal heart rhythms.
Researchers at the University of York have discovered a specific sodium channel, Nav1.5, that indicates cancer cells and affects tumor growth rates in breast cancer patients. The study found higher levels of Nav1.5 in tumour cells compared to normal breast tissue.