Articles tagged with Stress Responses
Researchers transplanted human stem cell-grown pituitary tissue into a monkey with a removed pituitary gland, restoring cortisol production and improving lifespan. The study demonstrates the potential for lab-grown human pituitary cells to survive and function after transplantation into a primate.
Mount Sinai researchers have identified a brain circuit, the anterior hypothalamic nucleus (AHN), that helps explain how prior adversity makes the brain more reactive to future stress. The study found that dialing AHN activity up or down directly altered how strongly mice responded to stress.
A small study of 22 healthy medical students found significant increases in blood sugar levels during exams and the days leading up to them. The study suggests that prolonged exposure to examination stress may have a negative impact on metabolic health.
Nearly half of US workers experience stress and anxiety, but those with high psychological capital are better prepared to cope. Organizations can help build psychological capital to improve employee engagement and retention.
Researchers uncover molecular mechanism by which Plasmodium falciparum increases gametocyte production in response to stress, enabling rapid transmission to mosquitoes. The study identifies key regulators, including GDV1 and AP2-HS, that trigger a regulatory feedback loop to control gametocyte production.
Researchers found that music produced a distinct reorganization of communication between auditory regions and key stress-related areas, including the insula and thalamus. Music was associated with improved positive mood and faster physiological recovery from acute stress.
Researchers have identified a specific genetic control point in sunflower that allows it to respond to salt stress. The study found that the C-repeat binding factor 4 (CBF4) module activates the high-affinity potassium transporter 11 (HAK11) to improve salt-stress tolerance in young sunflower plants.
A European consortium, led by Universitat Jaume I, aims to develop genetically modified citrus lines with greater resilience to climate change, pests, and diseases. The project, CitrusAld, will focus on sweet orange and mandarin, and explore biofortification to enhance nutritional properties.
A new study identifies astrocytes in the brain's fear center as a key player in stress response and anxiety. The research found that restoring the antenna-like structure on these cells can ease stress behaviors, and a potential treatment target has been identified.
Consuelo Walss-Bass's family was affected by schizophrenia, yet her sister was spared. Her laboratory addresses the genetic gap by exploring signaling alterations in neurons derived from affected sibling pairs, identifying convergent abnormalities in PI3K/GSK3 signaling.
Researchers identified EFHD1 as a protein driving metabolic liver disease, triggering an antiviral immune response that can be blocked to protect against liver injury. Blocking EFHD1 shows promise in preventing liver damage, even on high-fat diets.
Researchers connected visible stress responses to genetic and physiological changes in plants, identifying a conserved stress signaling mechanism. A protein called DUS2 was found to regulate photosynthesis under stress by modifying RNA transcripts.
Researchers from the University of Osaka have found a way for cells to quickly reactivate gene expression after being stressed by heat. They discovered that the CLK1 protein is regulated by phosphorylation and dephosphorylation, which controls its localization to nuclear stress bodies.
A team from the University of Osaka has created a high-throughput platform to engineer versatile biosensors that can track lipid molecules in living cells. This method, called Cell surface Liposome Binding (CLiB) assay, uses yeast cells and fluorescence readouts to test protein variants' binding to lipids.
Research links childhood adversity to mitochondrial function changes later in life, with threat and deprivation associated with unique biological signatures. The study adds to understanding how early-life adversity impacts mental and physical health across the lifespan.
Researchers discovered a fast protective mechanism in cells that forms a ring-like structure around the nucleus to prevent DNA damage and cell death. This 'actin ring' protects the nucleus by confining and stabilizing it, making it less likely to rupture.
Scientists have identified dopamine as a key player in mediating stress-induced courtship suppression in male Drosophila fruit flies. The duration of stress exposure significantly influenced the persistence of suppressed courtship behavior, highlighting the importance of dopamine signaling in this process.
The Paul and Shelia Schlosberg Family Foundation has donated $3 million to the Optimal BrainHealth for Warfighters initiative at Center for BrainHealth. This gift aims to boost cognitive resilience among U.S. Special Operations Command operators, veterans, and their families.
Researchers discovered that stress hormones trigger neutrophils to detach from blood vessel walls and travel to the heart, causing inflammation. Blocking these stress signals with beta blockers may prevent excessive inflammation and improve heart healing.
Tomatoes have difficulty germinating under prolonged heat stress, but two mutant lines with the loss-of-function mutation in SlIAA9 showed little decline in germination and normal seedling development. The mutants exhibited elevated expression of antioxidant enzymes and heat shock proteins, leading to enhanced resilience to heat stress.
The CIRTESU at Universitat Jaume I develops an experimental modular robotic fish prototype for aquaculture, reducing fish stress. The UJIFISH-I platform demonstrates high manoeuvrability and reliable target detection accuracy in controlled tests.
The study found that ATF5 plays a critical role in coordinating mitochondrial quality control and adaptive stress signaling in skeletal muscle. Absence of ATF5 resulted in increased muscle fatigability and elevated ROS production, highlighting its importance in maintaining muscle function with age.
Researchers found that cortisol significantly worsens orientation in individuals, particularly in environments without landmarks. The brain's internal GPS system, grid cells, lose function under stress, leading to impaired navigation.
A study by Florida Atlantic University researchers has uncovered the impact of stress on wild songbirds, finding that even mild challenges can alter the gut microbiome, leading to changes in health indicators such as beak color and stress hormone levels.
Scientists at UCSF created a new material that enables more predictable organoid growth, allowing for better study of disease and potential tissue replacement. The dynamic gel, invented by Zev Gartner, mimics the body's soft environment and enables precise 3D printing of stem cells.
Researchers at IISc have mapped a neural circuit that links stress to itch. Stress activates specific neurons in the lateral hypothalamic area, which directly regulate itch and reduce scratching behavior. This study provides new insights into the complex relationship between emotional states and sensory perception.
Research by University of Missouri scientists found that road salt is deadly to freshwater snails when paired with the presence of predators, causing nearly 60% higher mortality rates. The study suggests practical solutions to reduce salt pollution in waterways, such as cutting road salt use by up to 50%.
A study found that chronic stress and inflammation contribute to elevated mortality risk among Black Americans, with approximately half of the disparity attributed to these factors. The research suggests policy efforts to address structural racism and stress exposure can help minimize health risks.
A study found that intimate physical contact reduces cortisol responses, while oxytocin administration promotes wound healing. This integration of relationship dynamics and neurohormonal modulation may lead to future interventions for improved health and recovery.
Researchers have discovered that stress hormones can silence crucial neuronal genes by interacting with long noncoding RNAs and the polycomb repressive complex 2. This mechanism may provide a new understanding of how stress affects gene expression, particularly in relation to synaptic function and calcium signaling.
A study found a nearly linear relationship between nighttime light exposure and an increased risk of heart disease. The research suggests that reducing exposure to excessive artificial light at night can counteract the effects and may be a public health concern.
The University of North Florida is opening a state-of-the-art heat exercise laboratory in collaboration with the Korey Stringer Institute and Perry Weather. The lab will support research, education, advocacy, and consultation to prevent exertional heat stroke and optimize safety for athletes, military, and laborers.
UCSF researchers found a key cellular switch driving pulmonary fibrosis and developed a new therapy to block it in mice. The treatment works by preventing healthy lung cells from converting to harmful cell types, reducing scarring and improving lung function.
Researchers found that facial self-touching, particularly around the nose, chin, and cheeks, strongly correlates with stress levels during cognitive work. The study also suggests that this behavior may be an evolutionary, self-soothing mechanism to regulate stress.
Research synthesizes current evidence on psychedelic therapy's potential to fundamentally alter treatment paradigms for depression, anxiety, and PTSD. Chronic stress contributes significantly to psychiatric illness worldwide, leaving traditional treatments with residual symptoms or side effects.
The review synthesizes clinical evidence on MDMA-assisted psychotherapy for posttraumatic stress disorder (PTSD), autism spectrum disorder, eating disorders, and existential distress. It identifies consistent patterns across diverse clinical applications and highlights the therapeutic potential of MDMA, including its oxytocin-mediated ...
Researchers identified Phaedra1 as a gene essential for stress-induced cell death in Drosophila melanogaster. The mTOR-Zeste-Phae1 pathway controls lethal stress-dependent individual death. Suppressing this pathway increases survival rates after exposure to lethal stress.
Researchers found that recalling positive autobiographical memories before a performance enhances valence and arousal, leading to improved performance. This is attributed to increased sympathetic nervous system activity, which regulates involuntary bodily functions.
The European Association for the Study of Diabetes (EASD) has finalized its first evidence-based clinical practice guideline, which prioritizes assessing and managing diabetes distress among adults with type 1 and type 2 diabetes. Key recommendations include routine assessment and management of emotional burden.
Astrocytes, a type of brain cell, are sensitive to early-life stress and affect physical activity levels in mice. This study found that astrocyte morphology changes can be a marker of dysfunction and may contribute to the development of depression in humans.
Two ISTA Assistant Professors, Amelia Douglass and Ylva Götberg, have won 1.5 million euro ERC Starting Grants to explore how animals react to stress and the science behind binary-star stripping. Their research could lead to a better understanding of brain pathways disrupted in humans suffering from anxiety and stress.
A new study reveals that endometriosis can lead to lower blood pressure responses in women due to altered autonomic nervous system functions. This finding may have significant implications for diagnosis and treatment of the condition.
Researchers found that brain cells switch on and off in a steady rhythm, influencing stress hormone release and alertness. This discovery may lead to better understanding of disrupted stress rhythms and mental health.
A new study finds that past injuries can amplify fear and pain responses to stressful experiences, setting the stage for chronic pain conditions. Researchers discovered that mice with a history of injury responded more intensely to predator scent, exhibiting exaggerated fear and long-lasting pain.
Studies have shown that emotional or psychological stress enhances pain responses, but the effects of social pain transmission remain elusive. Researchers found that ultrasonic vocalizations emitted by mice in response to pain stimuli can induce emotional transmission and hyperalgesia in other mice.
Researchers found that live well temperatures fluctuate drastically during tournaments, causing physiological stress and longer recovery times for largemouth bass. This study highlights the importance of optimizing live well conditions to minimize mortality rates and ensure sustainable fisheries.
Dr. Randy J. Nelson's research reveals that artificial light exposure disrupts immune function, causes neuroinflammation, and influences mood regulation. His work has significant implications for understanding depression and anxiety disorders, as well as the obesity epidemic.
Researchers developed a novel CrTe2/NbSe2 heterostructure to create stable, controllable interfaces between magnetic and superconducting materials. The structure forms stripe-like patterns hosting localized magnetic moments, enabling topological quantum computing applications.
Dr. John Oldham's contributions have fundamentally reshaped personality disorder classification, moving from rigid categories to a more nuanced dimensional system. His Alternative DSM-5 Model for Personality Disorders (AMPD) has marked the most significant epistemological shift in psychiatric diagnosis for decades.
Sara Poletti's research reveals how childhood trauma triggers persistent neuroinflammation pathways and alters brain structure, creating lifelong vulnerability to psychiatric disorders. Her work identifies biological markers of trauma and explores prevention strategies to reduce mental illness odds.
Researchers have discovered a novel cell-clearance pathway linked to diseases such as Chediak-Higashi Syndrome, which affects immune system function. The study used CRISPR/Cas9 gene-editing technology and live imaging to characterize this pathway and identify key genes involved.
Researchers at Penn State have discovered a mechanism that resets the molecular cycle involved in the fight-or-flight response to stress and starvation. The study used imaging, structural, and biochemical techniques to uncover how this cycle completes and the system resets itself.
Researchers at Tufts University have created a saliva-sensing dental floss that can accurately measure cortisol, a key indicator of stress. The device uses molecularly imprinted polymers and is comparable in accuracy to existing sensors, making it a promising tool for tracking stress and related conditions.
A comprehensive review article synthesizes decades of research on stress hormone systems in primate brains, revealing key differences between rodents and primates. The findings highlight the importance of considering anatomical differences when developing treatments for stress-related psychiatric disorders.
A new study found that increased perceived stress can lead to worsened respiratory symptoms and decreased quality of life in individuals with chronic obstructive pulmonary disease (COPD). The study also examined the association between stress and platelet activation, oxidative stress, and systemic inflammation.
Researchers found that immune system influences stress and fear behaviors by changing how brain cells communicate, but treatment with psychedelics can target these interactions and reduce stress-induced fear. The study suggests that psychedelics could reshape treatment for inflammatory disorders like anxiety and depression.
Researchers found that cortisol levels were lower in survivors, while heart rate and blood pressure responses were altered. Interleukin 1B was significantly higher, suggesting potential long-term health problems despite healthy symptoms.
Researchers investigated why bones become less responsive to exercise with age, finding increased mtROS or decreased Atg7-dependent autophagy in osteoblastic cells do not contribute to reduced mechanoresponsiveness. Damage to the bone's osteocyte network also does not prevent a healthy bone-building response.
A team of Chinese researchers identified a novel intercellular signaling mechanism between adipocytes and hepatocytes in endoplasmic reticulum stress response. The study reveals that ceramide, a fat molecule, plays a key role in activating the unfolded protein response pathway in hepatocytes.
Scientists have long believed that cells respond to stress in a linear chain of events, but a new study reveals a more complex 'split-integrated stress response' that can be fine-tuned depending on the type and intensity of stress. This flexibility could lead to new targets for treating cancer and neurodegenerative diseases.