Showing 20 articles starting at article 1
Categories: Healthy Aging, Stress
Published Posttraumatic brain activity predicts resilience to PTSD
(via sciencedaily.com) After a traumatic experience, most people recover without incident, but some people -- between 2% and 10% -- develop posttraumatic stress disorder (PTSD), a mental health condition that can cause debilitating symptoms of anxiety due to emotional dysregulation. PTSD symptoms are present in up to 40% of trauma survivors in the acute aftermath of trauma, but full-blown PTSD develops in only a small subset of cases. Early identification of those at risk is critical for both early treatment and possible prevention.
Published Your body's own cannabinoid molecules calm you during stress
(via sciencedaily.com) When you're under stress, your brain may release its own cannabinoid molecules to calm you, activating the same brain receptors as THC derived from cannabis plants. But the brain activity regulated by these cannabinoid molecules were not well known. A new study in mice has discovered a key emotional brain center, the amygdala, releases cannabinoid molecules under stress that dampen the incoming stress alarm from the hippocampus, a memory and emotion center in the brain. The finding may reveal novel therapeutic targets for the treatment of stress-related disorders.
Published Active children are more resilient
(via sciencedaily.com) The school year has hardly begun and the first exams are already approaching. According to findings by researchers from the University of Basel, school children cope better with the stress if they get plenty of daily exercise.
Published Stress and insomnia linked to irregular heart rhythms after menopause
(via sciencedaily.com) A study of more than 83,000 questionnaires by women ages 50-79, found more than 25% developed irregular heart rhythms, known as atrial fibrillation, which may increase their risk for stroke and heart failure.
Published High-quality sleep promotes resilience to depression and anxiety
(via sciencedaily.com) Research has shown quality sleep can help bolster resilience to depression and anxiety.
Published Follow the leader: Researchers identify mechanism of cancer invasion
(via sciencedaily.com) Original source A cancerous tumor is the accumulation of cells uncontrollably dividing, some of which can invade other parts of the body. The process is difficult to predict in detail, and eradicating the cells poses even greater difficulty. Now, a research team has revealed how the exodus initiates, shedding light on a potential therapeutic target to halt the invasion and providing a prognostic marker to help clinicians select the best treatment option.
Published Poor sense of smell linked to increased risk of depression in older adults
(via sciencedaily.com) Original source In a study that followed more than 2,000 community-dwelling older adults over eight years, researchers say they have significant new evidence of a link between decreased sense of smell and risk of developing late-life depression.
Published Pain not perceived in the same way in people with Alzheimer's Disease
(via sciencedaily.com) Original source New research has found that in a mouse model mimicking Alzheimer's Disease (AD) pain signals are not processed in the same way as in healthy mice.
Published Loss of Y chromosome in men enables cancer to grow
(via sciencedaily.com) Original source As men age, some of their cells lose the very thing that makes them biological males -- the Y chromosome -- and this loss hampers the body's ability to fight cancer, according to new research. The study found that loss of the Y chromosome helps cancer cells evade the body's immune system. This common impact of the aging process in men results in aggressive bladder cancer, but somehow also renders the disease more vulnerable -- and responsive -- to a standard treatment called immune checkpoint inhibitors.
Published New findings show mitochondrial DNA fragments in blood as important biomarkers for aging and inflammation
(via sciencedaily.com) Original source In an eight-year study of more than 600 community-dwelling older adults, researchers say they have further linked levels of cell-free DNA (DNA fragments resulting from cell death) circulating in the blood to chronic inflammation and frailty. The study is novel and expands on previous work, the investigators say, because it focused on mitochondrial DNA rather than solely genomic DNA, as previously reported.
Published Close up on aging reveals how different cell types in the body age at different pace
(via sciencedaily.com) Original source A team or researchers reports the first Aging Fly Cell Atlas (AFCA), a detailed characterization of the aging process in 163 distinct cell types in the laboratory fruit fly. Their in-depth analysis revealed that different cell types in the body age differently, each cell type following a process involving cell type-specific patterns. AFCA provides a valuable resource for researchers in the fruit fly and aging communities as a reference to study aging and age-related diseases and to evaluate the success of anti-aging strategies.
Published Ultra small molecule as a new target for Alzheimer's disease?
(via sciencedaily.com) Original source A new study shows that a very small molecule called microRNA-132 can have a significant impact on different brain cells and may play a role in Alzheimer's disease.
Published Altered gut bacteria may be early sign of Alzheimer's disease
(via sciencedaily.com) Original source Alzheimer's disease causes changes to the brain that begin two decades or more before symptoms appear. A study reveals that the bacteria that live in the gut also change before Alzheimer's symptoms arise, a discovery that could lead to diagnostics or treatments for Alzheimer's disease that target the gut microbiome.
Published New research identifies cells linking chronic psychological stress to inflammatory bowel disease
(via sciencedaily.com) Original source For the first time, cells involved with the communication between stress responses in the brain and inflammation in the gastrointestinal (GI) tract have been identified in animal models. Glial cells, which support neurons, communicate stress signals from the central nervous system (CNS) to the semi-autonomous nervous system within the gastrointestinal (GI) tract, called the enteric nervous system (ENS). These psychological stress signals can cause inflammation and exacerbate symptoms of inflammatory bowel disease (IBD).
Published Taurine may be a key to longer and healthier life
(via sciencedaily.com) Original source A study finds that deficiency of taurine, a molecule produced in our bodies, drives aging, and taurine supplements can improve health and increase lifespan in animals.
Published The IL-17 protein plays a key role in skin aging
(via sciencedaily.com) Original source A team of scientists has discovered that IL-17 protein plays a central role in skin aging. The study highlights an IL-17-mediated ageing process to an inflammatory state.
Published How chronic stress drives the brain to crave comfort food
(via sciencedaily.com) Original source Stress can override natural satiety cues to drive more food intake and boost cravings for sweets.
Published A chance observation finds potential hearing biomarker for Alzheimer's disease
(via sciencedaily.com) Original source Researchers found where plaques are found in the brain may impact hearing in Alzheimer's disease.
Published Sea cucumbers: The marine delicacy that can deter diabetes
(via sciencedaily.com) Original source They're a marine delicacy loved across Asia, but the humble sea cucumber is also proving to be a key ingredient in preventing diabetes, according to new research.
Published Poorly insulated nerve cells promote Alzheimer's disease in old age
(via sciencedaily.com) Original source Researchers have shown that defective myelin actively promotes disease-related changes in Alzheimer's disease.