Articles tagged with Cell Responses
Researchers have discovered that the brain's 'reward' center also responds to negative experiences, such as fear, which can lead to increased dopamine production. This finding could help explain thrill-seeking behavior and inappropriate habits like drug addiction.
A new study at UC Davis found that eating a high-fat meal can trigger inflammation in blood vessels, particularly in individuals with waist sizes over 32 inches and high triglyceride levels. This inflammation can lead to atherosclerosis and increase the risk of heart disease.
A study found that primate immune system differences explain why humans are more susceptible to certain viral infections, such as HIV and hepatitis B. Genomic comparisons revealed unique gene expression patterns in humans compared to chimpanzees and rhesus macaques.
A new nonverbal response card has been developed to improve the accuracy of data collection on teenage sexual behavior. The device reduces reporting bias and provides confidential responses, resulting in higher accuracy rates for HIV risk assessment.
Scientists found that commensal species like Neisseria lactamica induce lower levels of human airway epithelial cell activation compared to pathogenic species. The study highlights the differential role of a bacterial surface component, PorB, in interacting with host cells and triggering inflammatory responses.
Researchers at USC College have made a groundbreaking discovery about sour flavors, revealing that protons from acids directly activate taste cells. This finding has important implications for understanding how different tastes interact and may lead to practical applications in cooking and food industry.
Researchers have discovered a potent toxin in scorpion venom that can prevent neointimal hyperplasia, a leading cause of heart bypass graft failure. The compound, margatoxin, is up to 100 times more effective than other known inhibitors, offering new hope for patients undergoing bypass surgery.
A new study found that both high-dose chemotherapy with stem cell transplant and conventional treatment with lenalidomide achieved positive responses in newly diagnosed multiple myeloma patients. The study showed improved quality of response compared to induction alone.
Researchers identified biomarkers associated with radiation response that could help tailor individual cancer treatments. The study employed a pharmacogenomics approach, integrating genome-wide data to find genetic variants and gene expression patterns linked to radiation response.
A new study reveals that some classes of interneurons may underlie distinct brain disorders, such as epilepsy and autism. The research suggests that precise dysfunction in specific circuits can lead to these disorders, shedding light on potential future treatments.
Researchers at the University of Alabama at Birmingham found that cigarette smoke inhibits the enzyme Leukotriene A4 Hydrolase (LTA4H), preventing it from shutting down proline-glycine-proline (PGP). This leads to chronic inflammation and a never-ending cycle of neutrophil recruitment. The study identifies PGP as a biomarker for lung d...
Researchers at Duke University Medical Center discovered that the cytokine interleukin-17 plays a significant role in disc disease and may lead to the development of new therapeutic approaches. Targeting this immune response could reduce painful inflammation and halt the evolution of arthritis.
A team of bioengineers from the University of Pennsylvania Institute for Medicine and Engineering developed a simulator to predict how blood platelets respond to various conditions during a heart attack or stroke. The model accurately predicted intracellular calcium signaling responses, even distinguishing between different donors.
Researchers have unlocked how potassium channels control electric currents in the body, a crucial process in cell communication and heart function. The study reveals that molecular gates switch conduction on and off in response to physiological signals, clarifying a long-standing mystery.
Peroxisomes, organelles inside cells, can detect virus invasion signals and launch a limited antiviral offensive. Mitochondria follow up with a more definitive counterattack, indicating a potential new approach to rare conditions like peroxisome biogenesis disorders.
Researchers at U-M have solved a long-standing mystery about how insulin-like growth factors (IGFs) work on muscle cells. IGFs promote either muscle cell differentiation or division, depending on oxygen availability.
A study by Beth Israel Deaconess Medical Center suggests that mitochondria released into the bloodstream following physical injury elicit a sepsis-like immune response. This finding could lead to new strategies for managing trauma and developing tests to differentiate between infective and non-infective inflammation.
Researchers have found 27 scent receptors in malaria-transmitting mosquitoes that detect compounds in human sweat. This discovery may lead to the development of new ways to combat malaria by repelling or confusing the mosquitoes. The study's findings could also inform the creation of more effective traps and repellents.
Researchers found that endocannabinoids selectively enhance sweet taste by acting on tongue taste cells, which may help regulate feeding behavior. The study's findings also suggest potential therapeutic applications for metabolic diseases like obesity and diabetes.
Researchers discover CD20's nonredundant role in generating optimal B cell immune responses. Gene therapy approach targets alpha-1 antitrypsin to alleviate emphysema symptoms. Inhibiting fatty acid oxidation sensitizes leukemic cells to death-inducing compounds.
Researchers have found that CD20 protein is essential for generating optimal B cell immune responses, particularly to T-independent antigens. The discovery was made by analyzing a patient with a mutation in the CD20 gene, who had impaired B cell responses and recurrent infections.
Researchers found that omacetaxine achieved durable responses in CML patients with the T315I mutation, who have limited treatment options. The injectable drug works by a different mechanism than current therapies and has shown promise for expanded use.
Research at Yale University reveals that an overactive immune response, rather than declining immunity, is to blame for increased susceptibility to viral infections among the elderly. In a study involving infected mice, inhibiting interleuken 17 prevented liver damage and death in aged cohorts.
A study published in JCI Journals reveals that PKC-theta protein is required for graft-versus-host disease (GVHD) but not for GVL responses or protection against infectious agents. This finding provides a potential new approach to prevent GVHD while preserving beneficial immune responses.
Research suggests that NSAIDs can prevent the early appearance of neuronal cell cycle events in a mouse model of Alzheimer's disease. However, treatment with NSAIDs does not reverse existing neuronal CCEs. Additionally, interstitial macrophages may play a role in preventing asthma by inhibiting LPS-induced immune responses.
Bladder urothelial cells sense fullness of urine through TRPV4 protein activation, which triggers Ca2+ influx and ATP release. The discovery may lead to treatment of bladder disorders such as overactive bladder and pollakiuria.
Researchers studied microglial cells in mouse retina to understand their response to neurodegenerative processes. Their work may aid in the development of therapeutic strategies for Parkinson's and Alzheimer's diseases.
Researchers found that anakinra treatment restored the deficient IL-18 response of natural killer cells and improved clinical parameters in patients with systemic onset juvenile idiopathic arthritis (SoJIA). The study suggests a potential new treatment strategy for children with newly-diagnosed SoJIA.
A new study by Washington University in St. Louis found that cell phone ringtones can be distracting in classrooms, impairing recall and learning. Students who experienced ringing phones performed 25% worse on course content tests, even after the ringtone had stopped.
Researchers at the University of Washington have discovered a cell survival pathway that protects against degenerative diseases and promotes longevity. The study found that nematode worms live longer when their genetic make-up permits them to turn on this pathway under normal oxygen conditions.
The study suggests that neural pathways governing sensory and motor associations accomplish task switching through learning and communication of distinct populations of MT neurons into a downstream decision system. This finding is important for understanding both normal cognition and psychiatric disorders.
Researchers discover that beta-arrestin1 mediates the flushing response but not the antilipolytic effect of nicotinic acid in mice. A drug design approach is proposed to retain therapeutic benefits without causing skin flushing.
Researchers found that dopamine causes certain brain cells to become more flexible and changes brain-cell circuitry to process important information differently than mundane information. This can help improve learning, particularly in remembering salient events.
Researchers at the University of Rochester have developed a novel optical technique called IRAM that enables rapid analysis of single human immune cells using only light. This technique allows for clear differences between two types of immune cells to be seen, providing new insights into cell activation and development.
Researchers found that nanoparticle size doesn't affect biological responses for most genes, as measured by total surface area. The study suggests a better understanding of nanoscale effects on cells and tissues.
Researchers identified a key role for dendritic cells in responding to Leishmania parasites, which cause illness in developing nations and have been detected in US soldiers. The study provides insights into the early stages of the immune response and has implications for vaccine development.
In a developmental program, Dictyostelium cells acquire polarized morphology and aggregate to form a migrating stream. The team discovered that ACA-containing vesicles cluster at the rear of cells, creating a 'breadcrumb trail' that guides fellow cells to join the parade.
Researchers have created a new strategy for controlling autoimmune responses in rheumatoid arthritis by genetically engineering Foxp3 regulatory cells. These cells can be activated to suppress the immune response, potentially reversing or inhibiting the disease process.
Researchers at Imperial College London have discovered a bacteria cell's 'stressosome', a large molecule that responds to external stress and danger. The stressosomes trigger a cascade of signals within the cell, producing over 150 proteins that enable the cell to adapt and survive.
Researchers found that cells tune gene expression using discrete bursts of activation, proportional to the frequency of nuclear localization pulses. This 'bang bang' regulation controls gene expression, with genes affected in proportion to the number or frequency of these jumps.
A single protein is essential to both innate immune response and hypoxic response, revealing a critical regulator of the hypoxic response. The study provides clues toward new treatment strategies to boost immune function in infected tissues.
Researchers at Florida State University have discovered an autoimmune-like response in the blood of malaria-infected African children that helps explain why existing DNA-based anti-malaria vaccines have repeatedly failed to protect them. The study sheds light on the unique medical needs of malaria's smallest, most vulnerable victims an...
A study by Genhong Cheng and colleagues has identified the mechanism by which IFN-beta reduces disease in multiple sclerosis. Administration of IL-27 alleviates symptoms in mice with MS, suggesting a key role for this molecule in the treatment's benefits.
By analyzing yeast cells' responses to periodic salt bursts, MIT researchers developed a simple model that captures the dynamics of a critical cellular pathway. This approach provides an alternative way to study intricate biological systems without requiring extensive computational simulations.
Researchers identified two blind individuals with intact non-visual responses to light, highlighting the functional distinctness between visual and non-visual pathways. The study found that short-wavelength blue light induced significant effects on circadian rhythms, melatonin secretion, and alertness in both patients.
Researchers at MIT have developed a system that uses beams of light to sort cells, allowing for precise separation based on specific cell characteristics. This technology could enable genetic screening, clinical testing, and cloning research with increased efficiency and reduced costs.
A study published in Journal of Consumer Research found that people who watch movies together synchronize their emotional responses, leading to a shared experience. This social influence affects participants' evaluations, making them like the movie more when they're in sync with others.
Researchers propose a broader approach to uncovering the causes and consequences of obesity, highlighting similarities in cell responses to excess nutrients. This understanding might reveal why overeating leads to various diseases and explain animal longevity on calorie-restricted diets.
A new study finds that sleep deprivation leads to overactive emotional centers in the brain, causing irrational behavior. The prefrontal lobe is shutdown, making it difficult for people to regulate their emotions.
Researchers at University of Pennsylvania devise nanoscale system to observe how individual cells react to external forces. The study shows that cells respond to outside forces and demonstrate a remote response from the cell’s internal forces., The findings prove useful for understanding tissue growth, function, and disease.
Researchers have identified gene expression signatures that can predict how individuals will respond to certain breast cancer drugs. These biomarkers could aid in tailoring treatments for women and identifying similar biomarkers for other types of cancer. A 'systems' approach suggests prioritizing experimental medicines for specific ca...
Researchers discovered how cells fine-tune oxygen use to make do with limited availability. They found that under stress, cells replace one protein with an energy-efficient substitute to maintain power production.
Researchers used a microfluidic chip to study the mating habits of yeast cells, revealing that a second MAPK plays a crucial role in the process. The findings shed new light on how cells send and receive signals from one another and from their environment.
Researchers at UCLA suggest that the brain uses physical changes to cells to monitor time, rather than a clock-like mechanism. The team's computer model showed that the brain-cell network can encode time through the context of preceding events, which was tested in a study with research volunteers.
The journal reviews new techniques and tools for chemical biologists to study biomolecules in action, including advances in fluorescence that allow precise observation of cells. Researchers can use these tools to probe the internal workings of cells and develop new therapies.
A team of researchers investigated the molecular basis of memory in living mice, identifying a critical molecule involved in learning. The study revealed that long-term potentiation (LTP) and learning share a common molecular basis, with the TrkB receptor playing a central role.
A new study published in The Journal of Infectious Diseases found that more people were at risk of anthrax infection after the 2001 attack on Sen. Tom Daschle's office than previously known. Prompt intervention with antibiotics and vaccination appeared to be highly effective against the disease, with no deaths resulting from the act.
A genetic mutation in a single amino acid change in the beta1-adrenergic receptor affects its response to certain beta blockers. The Arg389 variant of the receptor is more sensitive to carvedilol, leading to reduced cAMP signaling and potentially poorer treatment outcomes for black patients.
A study published by the American Thoracic Society found that human rhinovirus, a leading cause of common colds, can lead to progressive respiratory failure and death in immunosuppressed lung transplant patients. The virus was found to infect both upper and lower airways, contradicting previous assumptions.
A five-year study has shown that Gleevec's potency against chronic myeloid leukemia, with only 5% of patients dying from the disease during the study period. The drug produced few significant side effects, particularly after the initial two years of treatment.