Articles tagged with Stress Responses
Integrated Biosciences announces a drug discovery platform that enables precise control of the integrated stress response, a biological pathway activated by cells in response to various pathological conditions. The new platform uses optogenetic technique to study the ISR in live cells without physical or chemical damage.
A new study reveals that preoperative hydroxyprogesterone administration can improve disease-free and overall survival in patients with node-positive breast cancer by modulating cellular stress response and negative regulation of inflammation. Non-coding RNAs, such as DSCAM-AS1, play a regulatory role in this process.
A new study published in Aarhus University found that women using birth-control pills do not exhibit the same reduced stress hormone levels as those who are not on the pill. The researchers measured ACTH levels before and after social activities to observe rapid changes in the body's stress response.
Researchers have discovered that rattlesnakes can modulate each other's stress responses when in the presence of a companion, similar to human behavior. This phenomenon, known as social buffering, was observed in wild-caught snakes in Southern California and persisted even after hibernation or mating.
Scientists at Karolinska Institutet have identified a group of nerve cells involved in creating negative emotional states and chronic stress. The neurons, which are sensitive to oestrogen levels, were mapped using advanced techniques such as Patch-seq, Neuropixels, and optogenetics.
A study by Juntendo University researchers reveals that p62 bodies control redox-independent NRF2 activation through phosphorylation of ULK1, enabling the antioxidative stress response. The finding provides new insights into the role of phase separation in stress responses and its physiological significance.
A recent study by researchers at UNICAMP found that low-load with many repetitions and high-load with fewer repetitions both promote similar muscle growth. Muscle activation patterns were different, but metabolic stress was the same in both groups.
Researchers discover that senescence-associated secretory phenotype (SASP) can induce neuroendocrine transdifferentiation (NED) in breast cancer epithelial cells, promoting tumor progression and aging-related features. SASP's dual role in cancer involves both antitumoral and tumorigenic effects.
A recent study published in Cell Metabolism found that biological age increases with stress from surgery, pregnancy, and severe COVID-19, but can be reversed upon recovery. The study used 'biological clocks' to measure the health of cells and tissue, revealing a dynamic relationship between stress and biological aging.
A recent study published in Brain found that stress increases Alzheimer's risk in female mice by elevating amyloid beta levels, while male mice do not exhibit this effect. The researchers identified a cellular stress response pathway in brain cells that is active in females but not males.
A study found that biological age in humans and mice increases rapidly in response to diverse forms of stress, only to reverse after recovery. The researchers used DNA methylation clocks to measure changes in biological age, revealing transient changes in response to stressful stimuli.
Researchers uncover the critical link between cellular energy levels and mitochondrial damage through protein FNIP1. The study reveals that FNIP1 enables communication between AMPK and TFEB, instructing genes to remove damaged mitochondria and create new ones.
Researchers at Baylor College of Medicine discovered crucial steps that promote ciprofloxacin resistance in bacteria, pointing to potential strategies to extend antibiotics' effectiveness. The study found that RNA polymerase plays a major role in regulating DNA repair and identified a key molecule involved in modulating this response.
The study reveals that enzyme ATE1 enhances activity upon binding iron-sulfur clusters and is sensitive to oxygen, moderating the cell's response to oxidative stress. This discovery could lead to new therapeutic targets for diseases tied to chronic cellular stress.
Researchers have identified mitochondrial signaling pathways as critical organelles that promote tumorigenesis and metastasis. In particular, the integrated stress response is found to engage with mitochondria to drive tumor growth, highlighting a new paradigm for understanding aggressive prostate cancer progression.
A new study found that neutral maternal behavior at 12 months correlates with an epigenetic change in children related to stress response. The researchers analyzed data from a cohort of mother-infant pairs and found a small increase in methylation on the NR3C1 gene, which regulates the body's response to stress.
A recent study published in Immunity found that skipping breakfast can lead to a decline in immune cells and an increased risk of heart disease. The research showed that fasting triggers a stress response in the brain, which negatively affects immune cells.
Researchers at Virginia Tech have identified a critical molecule in the development of brain's stress response, which may lead to better understanding of stress-related mental health disorders. Deficiencies in DSCAML1 disrupt brain development and increase cortisol levels, leading to imbalanced stress responses.
Researchers at CU Cancer Center have discovered a way to activate the p53 tumor suppressor gene, which can kill cancer cells. By inhibiting two repressors of p53, the Integrated Stress Response is activated, leading to cancer cell death in multiple cancer types.
Scientists found that chronic stress increases the activity of proopiomelanocortin (POMC) neurons, leading to behaviors such as anhedonia and depression. Inhibiting POMC neuron activity reduced these behavioral changes. The study suggests that POMC neurons play a key role in increasing susceptibility to stress-related behavioral problems.
Researchers found no correlation between daily mood and confidence markers, but mood-related states and confidence level fluctuated at different time scales. Mood changes occurred faster than confidence level changes.
UCSF researchers identified glioma's cellular source of recurrent disease, finding cells shift to mesenchymal, radiation-resistant phenotype in response to standard therapy. Paracrine signals from tumor microenvironment drive this transition through AP1 pathway, leading to therapy resistance and tumor recurrence.
Younger adults who engage in proactive coping behaviors, such as concentrating on goals and preparing for challenges, experience fewer negative physical health symptoms. Proactive coping is crucial for building resilience and helping young people manage stress effectively, particularly between the ages of 18-36.
Researchers at KAUST have discovered a key protein that acts as a master switch for plant immunity, suggesting a simpler way to develop more resilient crops. The protein, OXI1, triggers the production of immune-promoting molecules, but its overactivity can harm plants.
Researchers found that SEUSS condensates rapidly form upon hyperosmotic stress, enabling Arabidopsis to tolerate salt and drought. Loss of SEU dramatically compromises stress-tolerance gene expression.
Research reveals early life adversity shapes brain circuits and behavior, increasing risk of depression and anxiety. Studies using rodent models uncover specific neural pathways impacted by early stress, shedding light on sex-specific responses.
Researchers at University of Copenhagen discover that plants use stress hormone ABA to reorganize their roots and grow away from salty areas. This mechanism could lead to the development of more salt-tolerant crops, reducing crop yields loss due to salinity.
Researchers at the University of Bonn have identified a new signaling pathway that triggers inflammatory responses in the skin after UV damage. This pathway involves the activation of p38 molecularly modifying NLRP1, a critical switch for inflammation, and initiates the assembly of inflammasomes.
Researchers discover chemical inhibitor TIS108 significantly lowers Striga infestation without affecting plant growth or grain yield. The study shows canonical strigolactones contribute to seed germination in root parasitic weeds and play a major role in stimulating invasion by Striga.
Scientists at the University of Tsukuba have identified a system to transport excess reactive sulfur species out of cells, maintaining redox homeostasis and preventing oxidative stress. This discovery opens new avenues for research into sulfur stress and related diseases.
A new study found that psychological factors such as coping abilities play a significant role in individuals' risk or resilience to mental health disruptions during the COVID-19 pandemic. Brain connectivity within specific brain networks also predicted individual vulnerability to anxiety and depression symptoms.
Researchers at John Innes Centre found that amino acid waves, not calcium waves, mediate plant responses to stress. Glutamate released from wounds triggers a wave of calcium responses in plant tissues.
Scientists at NTU Singapore have found that a stress response in cells, when 'switched on' at a post-reproductive age, could be the key to slowing down aging. The study showed that this stress response extended the lifespan of roundworms fed a high-glucose diet.
A group of researchers from Nagoya University has discovered a previously unknown pathway that regulates whether a plant uses its resources for growth or stress tolerance. The discovery involves the PSY family of hormones, which bind to receptors and mediate the switch between the stress response and growth.
Researchers found that increasing arginase 1 availability helps alleviate unhealthy responses and interrupt destructive inflammation in diabetic retinopathy and retinopathy of prematurity. This is achieved by reducing L-arginine levels, which in turn reduces inducible nitric oxide synthase activity.
A study published in the Journal of the American Geriatrics Society found that individuals with type 2 diabetes who exhibit psychological resilience experience fewer hospitalizations, better physical functioning, and a lower likelihood of becoming frail. Psychological resilience also appears to mitigate aging-related concerns.
A new study found that dogs can differentiate between breath and sweat samples from people before and after a stress-inducing task with an accuracy of 93.75%. The researchers believe that dogs are able to detect changes in volatile organic compounds produced by humans in response to stress.
Researchers at UMass Amherst discovered that the ClpX enzyme can play dual roles in cell health and respond to changing levels of cellular energy. This breakthrough changes the rules on how cells work, highlighting the importance of cellular energy control.
Researchers at Case Western Reserve University found that chronic daily stress was beneficial against a second injury, inducing formation of immune cells called TLOs which protected against intestinal inflammation. The study also revealed an association between stressed mice and increased production of cytokines IL-23 and IL-22.
Researchers found that stressed mice exhibited decreased neuron excitability in the dorsal hippocampus, which may drive social avoidance, while resilient mice showed increased excitability. This difference was linked to changes in stress hormone receptors and HCN1 protein expression.
A recent study found that reporting racial discrimination leads to increased salivary cortisol levels in Black adults on the same day and next day. This highlights the long-term impact of microaggressions on stress response, emphasizing the need for targeted interventions.
Researchers discovered that carrying and walking with crying infants for five minutes significantly reduces their distress and promotes sleep. The study suggests a new approach to soothing infant crying, which may improve long-term sleep outcomes.
Researchers at Harvard T.H. Chan School of Public Health found that psychological distress before COVID-19 infection was associated with a 32%-46% increased risk of developing long COVID and 15%–51% greater daily life impairment due to long COVID.
Researchers found that combining BCL-2 inhibitors can selectively eliminate senescent cells, improving efficacy and reducing toxicity by targeting high-MCL-1 expressing subpopulation of cells. This synergistic approach enables lower doses of drugs to be used, overcoming resistance to monotherapy.
A study by HKU Dentistry found that 'positive stress' can induce good changes in tooth stem cells, making them more resistant to injury and disease. The research team developed a preconditioning protocol that modified the cells genetically to mimic low oxygen conditions, which activated protective mechanisms.
A new study reveals that exploiting mitohormesis, a biological phenomenon where mild cellular stress boosts health and viability, can induce tolerance to influenza infection. Researchers identified a novel molecule, 9-tert-butyldoxycycline, which triggers beneficial mitochondrial responses that reduce tissue damage and inflammation.
A new study reveals that the protein CHIP can regulate insulin receptor signals more efficiently alone than in a paired state. This finding suggests that maintaining a balance between monomeric and dimeric states of CHIP is crucial for proper cellular function.
A recent study led by Eliza Loo found that plant immune receptors and signaling components confer salt tolerance even in plants challenged by non-pathogenic microbes. This suggests that plants can sense and initiate adaptive responses to abiotic stresses upon detecting alterations in cues presented by plant-inhabiting microbes.
Researchers at Salk Institute discover a molecule called CGRP that enables neurons to bundle threatening sensory cues into a unified signal, conveying it to the amygdala. The study may lead to new therapies for fear-related disorders such as PTSD and autism.
A study by CNIC scientists has identified a key role for the MKK3/6–p38γ/δ signaling pathway in cardiac hypertrophy. Inhibition of p38α promotes an unexpected activation of the other branch of the pathway, consisting of the proteins MKK3, p38γ, and p38δ. This activation induces another key pathway in cardiac hypertrophy, the mTOR pathway.
Low to moderate stress levels may enhance cognitive functioning and reduce the risk of developing mental health disorders. Participants who experienced low to moderate stress demonstrated better coping mechanisms and improved neurocognitive abilities.
Researchers at Boyce Thompson Institute have created the first comprehensive annotation of long intergenic non-coding RNAs (lincRNAs) in four mustard species. The study identifies locations across all four genomes that encoded lincRNAs, proposed functions for them, and confirmed the function of some lincRNAs involved in germination. Th...
Researchers discovered that stressed plants produce salicylic acid, a protective hormone, to counteract stress caused by climate change. This discovery could help plants survive increasing stress and ultimately protect the food supply.
A study by University of Toronto researchers found that childhood physical abuse is associated with chronic pain, diabetes, cancer, migraines, arthritis, and heart disease in later life. The trauma can influence both physical and mental health many decades after the event.
A new study teaches teenagers to reframe their stress responses from negative to positive driving forces. The intervention improves stress-linked health outcomes, including biological responses, psychological well-being, anxiety symptoms, and academic performance in high-stress environments.
Grieving a close family member can significantly increase stress levels, contributing to poor prognosis in heart failure patients. The study found that bereavement was associated with increased mortality risk, particularly after death of a child or spouse/partner.
Researchers discover G6PD's pivotal role in activating pentose phosphate pathway to counter oxidative stress, leading to increased cell death and tumor shrinkage. Ovarian cancer cells' reliance on fatty acid metabolism fuels oxidative compound production, which can be offset by G6PD inhibition.
A study led by Imperial College London researchers discovered that certain types of stress induce sleep in mice, which subsequently relieves anxiety. The findings suggest that a specific set of neurons detected and responded to stress hormone levels, inducing both NREM and REM sleep.
Researchers have developed innovative tests for multiple chemicals using plant-based molecules that can detect synthetic cannabinoids and banned pesticides. The system uses a simple and inexpensive approach to quickly signal the presence of nearly 20 different chemicals.
Researchers from Tohoku University found that virtual training can decrease psychosocial stress response and lower anxiety levels, comparable to real exercise. The study used immersive virtual reality to simulate physical activity, inducing physiological changes and cognitive benefits in young healthy subjects.