Articles tagged with Calcium Signaling
A UCI-led study reveals how a TREM2 gene mutation in brain microglia immune cells can increase the risk of Alzheimer's disease. The research found that blocking excess calcium accumulation may be an effective way to modulate microglia behavior and fight the disease.
The John Innes Centre researchers identified the role of the signaling protein CaM2, which regulates calcium channels and shapes calcium signals. This led to accelerated calcium frequency, earlier signaling with bacteria, and enhanced root nodule symbiosis in engineered legume roots.
The Venus flytrap has a sensitive system for stimulus transmission, with electrical impulses triggered by touch and transmitted quickly to catch prey. Anaesthetizing the plant with ether reveals that it does not react to touch during this time, mirroring human anaesthesia.
Researchers have created the first patient-specific zebrafish model for arrhythmogenic cardiomyopathy (ACM), a heart disease caused by a genetic mutation. The model recapitulates the human form of ACM, including fat accumulation in the heart and changes in calcium levels, and shows promise for relieving symptoms.
Recent clinical and experimental data suggest that vascular calcification and bone loss share common pathophysiological mechanisms. The International Osteoporosis Foundation's new review elucidates the key associations between the two disorders.
Researchers create red biosensor R-CatchER that directly monitors calcium activity at specific locations within a cell, aiding in understanding molecular basis of human diseases. The discovery could aid in better understanding of disease mechanisms and development of new drug discovery tools.
A team of researchers has uncovered the intricate cellular mechanism behind calcium's role in regulating energy supply to specific brain regions. By studying calcium signals in capillaries, they found that increased calcium levels trigger nitric oxide production, leading to vessel relaxation and enhanced blood flow.
Scientists have identified a dual-control system that regulates the release and recycling of synaptic vesicles, enabling precise signal transmission. Calcium channels Ca2 and Ca1 are spatially segregated, with Ca2 required for exocytosis and Ca1 enhancing endocytosis, demonstrating separate control of these processes.
A study published in Nature Neuroscience reveals the discrete thalamocortical circuits underlying chronic pain and depressive symptoms. The researchers found that a specific pathway from the parafascicular thalamic nucleus to the anterior cingulate cortex mediates depression-associated pain sensitization.
Researchers discovered vitamin D regulates calcium in the distal intestine, a previously unknown role. This finding has implications for treating bowel disease and calcification disorders.
A new imaging technology allows researchers to see multiple intracellular signals simultaneously, revealing their relationships and interactions. This breakthrough could illuminate complex processes like learning and memory, as well as diseases such as Alzheimer's and cancer.
Rotavirus-infected cells release signaling molecules adenosine diphosphate (ADP) that bind to P2Y1 receptors on neighboring uninfected cells, triggering intercellular calcium waves and disrupting normal function. This discovery provides a new potential strategy for treating viral diarrhea.
A new study reveals a protein called OSCA1.3 forms a channel that triggers calcium entry into plant cells, triggering the closure of stomata as a defense response to pathogens. This finding is crucial for understanding plant immune mechanisms and could lead to more resilient crops.
Wolfram Syndrome is a progressive degenerative disease characterized by diabetes, psychiatric symptoms, loss of vision, deafness, and incontinence. Yale researchers have discovered a potential treatment involving two existing drugs that restore calcium signaling and improve cell functions.
Researchers visualize nearly complete transport cycle of mammalian glutamate transporter homologue, revealing efficient mechanism for sodium and substrate molecules. The discovery sheds light on potential treatments for schizophrenia and other mental illnesses.
Researchers have developed a novel high-speed microscope to capture millisecond electrical signals in neurons, enabling the study of complex brain-wide interactions. The technique uses FACED technology to create a super-fast sweeping laser beam and detects voltage signals using engineered proteins.
Researchers discovered that Tulane virus, a calicivirus similar to human noroviruses, requires intracellular calcium for replication and uses its protein NS1-2 to hijack cellular calcium signaling. This finding suggests that norovirus might use a similar strategy to infect epithelial cells.
Researchers have identified the mechanism underlying ultrasonic brain stimulation's neuromodulation effect, revealing that TRPA1 channels in astrocytes play a crucial role. This non-invasive approach has shown promise for treating movement disorders and may also be useful for conditions like dementia, concussions, and depression.
A study by Temple-led researchers describes a unique mechanism for coordinating calcium entrance and exit 'doors' on T cells, which helps them carry out their jobs and ensure normal immune function. The research offers new insight into calcium signaling that could help scientists better understand autoimmune and immunodeficiency diseases.
A study from MPFI has uncovered that CaMKII decodes calcium signals predominantly through its autonomous activity, rather than just its interaction with calmodulin. This finding broadens our understanding of how molecules contribute to memory and synaptic plasticity.
University of Houston researcher Margaret Cheung is exploring the molecular structure of memories at the precise moment they are formed in single neurons. She aims to understand how calcium signaling and calmodulin affect cellular processes, including human cognition.
Researchers discovered that TPC1 ion channel contributes to plant excitability, enabling plants to respond to stressors. The study sheds light on plant communication and may lead to breeding more resilient crop varieties.
MIT researchers have developed a new MRI-based detection method for intracellular calcium signaling, enabling precise measurements of neural activity. This breakthrough allows scientists to link neural activity with specific behaviors and could lead to further research on brain function and diagnostics.
Plant biologists at HHU and WWU have discovered a key mechanism that enables plants to regulate their responses to iron deficiency, ultimately controlling iron uptake in roots and seed storage. This finding has significant implications for understanding plant biology and agricultural research.
Researchers found that a protein pair, STIM1 and ORAI, control cellular calcium signals through structural changes. The discovery lays groundwork for novel treatments to manipulate aberrant calcium signaling in the immune system.
Researchers discover that glutamate activates a wave of calcium in plant tissues, triggering a defense response. The study uses fluorescent imaging to visualize the calcium signaling system, showing that it moves quickly through the plant to prepare distant tissues for future threats.
Researchers have identified a novel form of calcium signaling called store-operated calcium entry (SOCE) as the key to expressing specific proteins on individual neurons. This discovery has implications for understanding brain development, behavior, and disease, including neurodegenerative disorders such as spinocerebellar ataxia 15.
A new study reveals that the protein RGS14 functions as a molecular brake on learning and memory by regulating calcium levels in the hippocampus. The researchers found that RGS14 limits plasticity in CA2 neurons, which are less adaptable than neighboring CA1 neurons.
Researchers at Vanderbilt University have discovered that wound healing is triggered by a complex series of calcium signals in cells. The team found that cells use both gap junctions and protein signaling to respond to injury, allowing them to differentiate between different types of wounds.
Max Planck Florida Institute for Neuroscience researchers optimized imaging methods to visualize CaMKII activation induced by calcium level increases. They found that CaMKII activity spiked in response to each pulse, just like calcium, but with longer-lasting and step-wise patterns that influenced synapse strength and structure.
The study identifies a direct role for MCU complex in mitochondrial ROS-sensing, with oxidation-induced S-glutathionylation regulating activity during inflammation and cell survival. The findings could have implications for understanding metabolic disorders and neurological and cardiovascular diseases.
A team of researchers at the National Institutes of Health has uncovered a possible biochemical mechanism behind ACDC disease, which causes calcium buildup in the arteries. The study suggests that treating this condition with drugs like etidronate could help reduce calcification and potentially lead to an effective treatment.
A research team has developed a clearer understanding of how platelets sense mechanical forces to initiate the cascading process leading to blood clotting. The study reveals that mechanoreceptor molecules like GPIbα play a crucial role in transducing forces into biochemical signals.
Scientists have discovered how sensory nerve cells work together to transmit itch signals, identifying a new potential target for treating itching. The discovery suggests that interfering with the activity of sensory neurons may inhibit multiple types of itching.
Researchers found that a specific type of calcium-based signal regulates the production of immune cells that drive and ramp down the body's massive reaction to invading organisms. The study suggests that fine-tuning calcium signals may enhance immune responses to influenza vaccines and treat chronic inflammatory and autoimmune diseases.
Researchers at NCBS discovered Septin 7 as a 'molecular brake' regulating Orai proteins and maintaining dopamine levels. This discovery could lead to therapies for neurodegenerative disorders and immune system dysregulations.
The MCU structure is a homopentamer with a hydrophilic pore, featuring two carboxylate rings as the ion selectivity filter. This novel ion channel architecture suggests a passage for calcium transport.
Researchers at RIKEN Brain Science Institute discovered myosin-Va's role in directing neuron growth. The protein complex acts as a calcium sensor that tells new axon pieces where to go.
Researchers at Ohio State University have engineered new calcium receptors to enhance or preserve heart function in mice without harmful effects. The study shows improved cardiovascular performance and reduced mortality compared to control groups.
A new study by Rosalind Franklin University researchers has discovered that hydrogen sulfide levels regulate chronic inflammation caused by obesity. The findings suggest targeting the Orai3 calcium channel as a novel treatment for obesity-related inflammation and related health issues.
The study reveals that glutamate triggers calcium release to stabilize GABAA receptors, maintaining proper excitatory-inhibitory balance. This finding has implications for understanding disorders related to imbalance, such as epilepsy and autism.
Researchers at La Jolla Institute for Allergy and Immunology identified the matchmaker that brings critical calcium channel components together, allowing calcium to rush into cytosol. This finding provides a potential target for developing drugs to modulate T cell activation status.
Adult stem cells adjust proliferative activity in response to various signals through intracellular calcium signaling, revealing a master regulator of stem cell activity. Elevated Ca2+ levels regulate stem cell division and growth in response to L-glutamate, infection, and tissue damage.
Researchers developed a new system to image individual neurons in the marmoset brain, overcoming limitations with two-photon microscopy. This allows for long-term study of neural activity related to cognitive and social behaviors.
Ezerski will focus on modeling the interactions between calcium, calmodulin, and CaMKII to understand how their shapes change in response to calcium signaling. This research aims to improve knowledge of calcium ion signaling, a method crucial for biological processes in neurons.
Researchers visualized calcium signals in plants that spread systemically from attacked leaves to neighboring leaves, triggering a plant defense response. The study used transgenic Arabidopsis plants that emitted light energy when bound by calcium ions, allowing scientists to track the calcium flow in plants.
Researchers found that certain electronic cigarette flavors can alter important cellular functions in lung tissue, including changes in cell viability, proliferation, and calcium signaling. Flavors such as Hot Cinnamon Candies, Banana Pudding (Southern Style), and Menthol Tobacco were shown to be toxic to cells at higher doses.
Scientists at OIST Graduate University have determined that distance from calcium channels to vesicles impacts neuron's signaling precision. As rat subjects mature, the distance between gated channels and vesicles shrinks, increasing signal efficiency by 30%.
Researchers at University of Pennsylvania showed how brain distinguishes between errors of different magnitudes, critical for fine-tuning motor control. They found that longer air puffs corresponded to more climbing fibers sending signals to Purkinje cells, allowing the brain to learn and adapt.
A study published in PNAS reveals that a protein cross-linking enzyme interacts with a cell receptor to lock it in a closed state, reducing neuron signaling in neurodegenerative diseases like Huntington's and Alzheimer's. The mechanism may provide insight into the development of new drug therapies for these conditions.
Researchers decipher how cells translate signals from surroundings into internal signals using calcium ions. They discovered a pattern in the variation of intensity and frequency of calcium impulses to convey meaningful responses inside the cell.
Researchers have found that suppressing hyperactivity of calcium channels alleviated FAD-like symptoms in mice models, indicating a potential therapeutic target. The findings suggest that modulating calcium signaling could be explored as a new approach for treating familial Alzheimer's disease.
Researchers used multiphoton microscopy to visualize podocyte calcium dynamics in response to glomerular injury, finding a robust calcium wave that spread throughout cells. Additionally, a mutation in the steroidogenic factor 1 (SF-1) gene was identified as causing asplenia and disorder of sexual development in a pediatric patient.
A new MBL zebrafish study elucidates the importance of calcium signaling in wound healing by identifying key membrane proteins that trigger cellular migration. The research reveals a graded calcium signal surrounding wounds, guiding skin cells to migrate toward the center and regenerate new skin.
Researchers develop new methods to visualize calcium signals in entire astrocytes, revealing their role in modulating synaptic activity and regulating local blood flow. These findings pave the way for future exploration of astrocytic physiology.
Researchers discovered a new way to regulate calcium signaling in worms, revealing the crucial role of microRNA-786 in dictating when and where the primary calcium spike occurs. This finding may have significant implications for understanding calcium signaling processes in humans.
Researchers at University of Copenhagen and Aarhus University have found that calcium pumps in cell membranes adjust speed based on calcium concentration. The discovery may lead to new drug development and food production methods.
Researchers at Indiana University School of Medicine have discovered a peptide, CBD3, that short circuits a pathway for chronic pain without debilitating side effects. The peptide has been shown to block pain signals by interfering with calcium channels, making it potentially safer than addictive opioids or cone snail toxin.
A new study reveals that ER stress can lead to the destruction of a protein that regulates calcium signaling in neurons, causing brain damage similar to neurodegenerative diseases. The researchers found that a protective chaperone protein helps maintain the interaction between this protein and calcium signaling.
Recent advancements in microscopy and buffering have enabled researchers to investigate the speed and termination of calcium signaling in muscle and nerve cells. The new tools allow for a deeper understanding of how these signals initiate and spread.