Articles tagged with Stress Responses
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A study of 40 healthy male participants found that those raised in urban areas without pets exhibited heightened immune activation and inflammation after psychosocial stress. This suggests a potential link between urban upbringing and increased vulnerability to stress-associated physical and mental disorders.
A new study published in PNAS found that children raised in rural environments with animals have more stress-resilient immune systems and lower risk of mental illness than pet-free city dwellers. The research supports the 'hygiene hypothesis,' which posits that overly sterile environments can breed health problems.
Researchers discovered that mitochondria employ the mitoCPR response to handle overwhelming protein imports, involving increased expression of PDR3 and genes facilitating protein clearance. The mechanism's existence in higher eukaryotes like humans remains unknown.
A Massachusetts General Hospital-led study reveals that chronic early-life stress raises PTSD vulnerability by increasing ghrelin levels in both rat models and human adolescents. Elevated ghrelin levels are associated with increased fear response and susceptibility to mental health disorders.
A new study published in Scientific Reports found that vertebrate species, including humans, exposed to stress prenatally tend to have higher stress hormones after birth. The researchers analyzed data from all known studies across vertebrates and found consistent effects of prenatal stress on offspring stress hormone levels.
Researchers have discovered a detailed structure of ISRIB, a brain-boosting experimental drug that eliminates learning and memory deficits in mice with concussions. The new atomic-scale protein structure reveals how ISRIB interacts with its target, potentially leading to tailored treatment for cognitive disorders.
Gene expression studies reveal genes involved in stress response signaling in streptophyte algae, the ancient ancestors of land plants. These findings provide insight into the evolution of land plant stress response mechanisms.
Researchers found that writing critically about past setbacks leads to lower levels of the
Researchers at Saint Louis University have uncovered new answers about why cells rapidly age in children with a rare disease called Hutchinson-Gilford Progeria Syndrome. The team found that cellular replication stress and a mistaken innate immune response are culprits, and successfully blocked these processes with vitamin D.
Researchers at TSRI found that cells activate protective pathways during stress, leading to longer mitochondria and improved energy production. This mechanism may help combat stress and age-related diseases.
Chronic stress leads to increased inflammation-promoting bacteria and weakened colonic mucus barrier in mice. This disruption can trigger an immune response and increase severity of induced colitis.
Researchers found changes in gene activity in the pituitary gland of foxes selectively bred for tameness, which may explain why tame foxes are less stressed. The study suggests that domestication alters animals' reactivity to stress by modifying the way their brain centers communicate about hormone release.
A recent study published in Journal of Leukocyte Biology found that stress receptors can control immune cells' defense mechanisms, leading to allergic diseases. Mice with disabled stress receptors showed reduced disease symptoms and were protected against stress-related illnesses.
A new study identified CRF1 as a master regulator of mast cell activity during stressful challenges, including psychological stress and anaphylaxis. The study showed that mice lacking CRF1 expression were protected against disease, suggesting a potential therapeutic target for treating stress-related diseases.
A unique model for Alzheimer's disease has been developed, suggesting a new approach for treating the condition. By reducing stress granule proteins, nerve cell health and memory can be improved.
New research reveals stress's negative effects on brain function, including gene expression alterations, anxiety responses, and mental illness symptoms. Potential paths for relief include astrocyte signaling control, microbiome regulation, and newborn neuron development.
A Tel Aviv University study found that people often project their own experiences with stress onto colleagues, causing miscommunication and missed opportunities. The research showed that a person's individual stress mindset colors their perception of others' health, productivity, and burnout levels.
Scientists have identified a plant-specific unfolded protein response (UPRmt) that protects mitochondrial proteins from damage, similar to the UPRmt found in animals. This discovery highlights the conserved nature of mitonuclear stress signaling pathways across species.
A study by Carnegie Mellon University found that a mindfulness meditation mobile app with an acceptance training component reduces cortisol and systolic blood pressure in response to stress. The app was shown to lower blood pressure responses by approximately 20% and cortisol responses by more than 50%.
A new University of Michigan study reveals the NFL's transformation from a leader in avoiding concussion discussion to one that now leads the charge. The league has implemented significant changes, including creating expert-only committees and advocating for legislation, to address the issue, which had previously damaged its public image.
Long-term mental exercises lead to specific restructuring of the social brain, including changes in gray matter volume and cortical thickness. This is associated with reduced indicators of stress and improved attention, compassion, and cognitive perspective-taking.
Researchers discovered that yeast cells form protein aggregates in response to stress, which are then dissolved when the stress passes. The aggregates serve as a protective mechanism for essential enzymes, enabling the cell to quickly recover from stress.
Researchers found that stress reduces our capacity to detect new threats by impairing how well we track and update predictions of potentially dangerous circumstances. Stress also impairs flexibility in decision making, resulting in a slower rate of learning.
A University of Missouri study found that horses working in therapeutic riding programs exhibit low physiological and behavioral stress responses. The study suggests that these programs can provide a new lease on life for retired or unwanted horses.
Researchers found that largemouth bass stressed by air exposure are less likely to be caught by angling, suggesting a potential link between cortisol levels and fishing vulnerability. The study's findings have implications for fisheries management and the selection of fish populations for recreational fishing.
The study reveals that bacterial defense mechanisms are highly organized in response to nutrient stress, but become disorganized when faced with antibiotics. The researchers used experimental and computational methods to understand the workings of the bacterial defense system.
Methylation and S-nitrosylation are conserved protein modifications that regulate abiotic stress responses in plants. NO positively regulates PRMT5 activity through S-nitrosylation, leading to proper splicing-specific pre-mRNA processing and enhanced tolerance to stress.
Researchers modelled adrenal gland responses to stress, predicting abnormal glucocorticoid release and testing in rats. The study reveals dynamic complexity in the adrenal gland's response to stress, highlighting its role in regulating hormones.
Omar Saleh, a UCSB professor, has been awarded the Friedrich Wilhelm Bessel Research Award for his work on soft and biological matter. He will use the €45,000 award to collaborate with German researchers on a long-term project focused on artificial DNA systems.
Engaging with technology can increase brain information load, activating stress response and promoting neuronal health. This 'hormetic stressor' diverts repair resources from germline to neurons, reversing natural aging process and potentially reducing age-related diseases.
A study found that retirement lowers biological stress levels in higher-status jobs, but increases them in lower-status jobs. This widening of the socio-economic-health gradient could contribute to rising health inequalities in old age.
Researchers discovered a separate mechanism in the brain that deals only with chronic stress, involving a small group of nerve cells in the paraventricular nucleus. The CRFR1 system is thought to play a role in regulating cortisol levels and may be involved in depression, with patients having more of this receptor than average.
Researchers found that antibiotics like trimethoprim induce a stress response in bacteria, protecting them from acidic damage. This cross-protection mechanism increases the survival chances of bacteria exposed to antibiotics and other environmental stresses.
Scientists at UNC Chapel Hill have identified a key genetic switch that helps soil bacteria living on and inside plant roots harvest phosphate. This discovery raises the possibility of probiotic treatments to increase plant efficiency and address the impending global phosphate shortage.
A specific protein forms gels in response to stress, which helps cells function and grow under challenging conditions. This gel-like structure is not a sign of damage but rather an adaptive response.
Researchers discovered that corals activate ancient genes when exposed to stressful conditions, which could serve as an early warning sign for coral bleaching events. This study provides a new way to monitor coral health and predict bleaching events, potentially helping scientists identify and map survivor coral colonies worldwide.
Research by UCL scientists found a strong association between long-term stress and obesity, with people experiencing chronically elevated cortisol levels being more prone to weight gain and persistent overweight status.
A study found that young Indigenous people's biological stress response is linked to the racism they experience, with impaired cortisol levels leading to a higher risk of poor mental health. The researchers suggest that this could be used to predict the development of mental health problems in First Nations' people.
Blocking IRE1 with a small molecule prevents progression of atherosclerosis in mice, according to UC Santa Barbara cell biologist Diego Acosta-Alvear. Sustained UPR activation has been implicated in various diseases, and this research aims to understand how diseased cells adapt stress response networks to survive.
Researchers discovered flaviviruses like Dengue and Zika use an unexpected mechanism to hijack human cell machinery, suppressing translation initiation while promoting viral protein synthesis. This finding may reveal new targets for designing antiviral therapies.
Researchers found a relationship between increased cortisol response to stress and gastrointestinal symptoms in children with autism. Individuals with autism who experienced frequent constipation and abdominal pain had greater cortisol levels in response to stress.
Research reveals that cells use a shared molecular network to respond to both chemical and mechanical cues, allowing them to combine conflicting signals into a unified path. This finding takes scientists closer to understanding biological processes like embryonic development, tumor metastasis, and wound healing.
Researchers at Stockholm University have identified a hormone called corazonin that helps fruit flies counteract stress and restore their internal balance. The discovery has implications for finding environmentally friendly ways to control pest insect populations.
A team of scientists from Germany has identified a class of quinone-like substances with an epoxide functional group that can kill problematic Salmonella pathogens. The compounds work by interfering with the bacterial stress response system, making them a potential tool in the fight against multidrug resistance.
A VIB and Ghent University research team has identified key genes that enable plants to respond to drought stress. These core genes play a pivotal role in a plant's defense mechanism against drought, allowing for advanced breeding and genome engineering efforts to create drought-tolerant crop plants.
Despite major advances in molecular biology, genomics and CRISPR gene-editing technology, many details of plant stress signaling pathways remain a mystery. The Zhu lab has made significant contributions to understanding SOS, the first abiotic stress signaling pathway identified in plants, but identifying similar drought response pathwa...
Research reveals females react differently than males to social isolation, experiencing stress and releasing corticosterone. In contrast, male mice show no similar reaction to physical stress, such as swimming, suggesting a lack of sensitivity towards stressors.
Researchers discovered that Antarctic basidiomycetous yeast Mrakia blollopis consumes high amounts of energy during growth to cope with cold stress. The strain accumulates aromatic amino acids, which improve cell growth at low temperatures.
Two studies investigate peer victimization in schools, revealing the importance of early intervention for addressing both overt and relational forms of victimization. Overt victimization is associated with higher levels of aggression and externalizing behavior, while relational victimization links to internalizing problems and a lack o...
A new study from Boston Children's Hospital reveals that specific neurons in the hypothalamus play a central role in triggering anxiety. Blocking these neurons selectively erased natural fears in mice, suggesting a potential more effective treatment for anxiety and other psychiatric disorders.
A team of Duke scientists used DNA-sequencing and computerized biology to study the glucocorticoid receptor's signaling system. They found that only 13% of binding sites directly respond to hormones, while the remaining 87% act as clusters that amplify signals.
Researchers have discovered a link between cellular stress and multiple types of birth defects, including heart defects. A study led by Professor Sally Dunwoodie found that reduced oxygen levels triggered a stress response in embryonic cells, leading to heart development problems.
A recent study published in Cell Metabolism shows that neurons in the brain have a significant role in regulating metabolic responses to stressful situations. The CRFR1 receptor, typically associated with the sympathetic nervous system, is found to be expressed on cells involved in appetite regulation and energy expenditure.
A new study reveals that Port Jackson sharks have distinct personality traits, including boldness and handling stress reactivity. These differences are repeatable in juvenile sharks and may influence their interactions with habitat and other species.
Matthew Hill's research has deepened understanding of how the brain responds to stress, highlighting the crucial role of the endocannabinoid system. His work demonstrates that enhancing this system can reduce anxiety and improve coping responses to stress.
Researchers from NIST and Georgetown University have deciphered the mechanisms behind 'oobleck''s switch between liquid and solid states. They found that shear-thickening fluids are driven primarily by frictional contacts, with hydrodynamic forces playing a supporting role at lower concentrations.
A UCL study found that uncertainty about receiving a painful electric shock leads to significantly more stress, even if the likelihood is low. The researchers tracked participants' stress levels and found they were better at guessing whether or not they would receive a shock when their uncertainty was high.
Researchers at Fred Hutchinson Cancer Center have identified a tiny area of the mouse brain responsible for the innate fear response triggered by predator odors. This region, known as AmPir, is located in the olfactory cortex and plays a crucial role in perceiving smells, including those associated with fear.
A study involving skydiving participants found that acute stress can cause molecular alterations in the immune response, leading to increased risk of stress-related conditions. The researchers identified specific genes and pathways involved in both innate and adaptive immune responses that were dysregulated after the jump.
Researchers at Ohio State University found that sustained stress impairs memory and cognitive function in mice, with inflammation caused by the immune system being a key factor. The study suggests potential targets for pharmacological or behavioral treatment to interrupt inflammation and improve memory.