Articles tagged with Serotonin
A study by Brown University researchers found that serotonin helps reduce belief stickiness, making it easier to update beliefs and adapt to changes. This discovery holds implications for understanding and treating obsessive-compulsive disorder (OCD).
A University of Bristol-led pilot trial found that tocilizumab reduced symptoms of depression, fatigue and anxiety in people who had not responded to standard treatments. The study provides early evidence for a new treatment option for patients with inflammation-related depression.
A randomized clinical trial found that genotype-guided prescribing of SSRIs did not improve depression symptoms at 3 months but showed higher remission rates at 6 months. Future studies should focus on the long-term impact of this approach.
A new study published in the Proceedings of the National Academy of Sciences found a link between elevated serotonin levels and tinnitus behavioral symptoms. The research suggests that clinicians should recognize and validate patient reports of medication-associated increases in tinnitus when prescribing antidepressants like SSRIs.
Researchers discovered that acetylcholine can directly trigger the release of serotonin in the brain, promoting coordinated chemical signaling. This finding suggests that brain disorders may involve the internal coordination system being pushed into overdrive, leading to pathological increases in serotonin levels.
A team of scientists at the Indian Institute of Science discovered that disrupting a single gene alters serotonin signaling, leading to swarming behavior in worms. The study suggests that neuromodulatory control of social behavior might be evolutionarily conserved across species.
A new study by researchers from the University of Southern Denmark has found no evidence of naturally occurring DMT in the adult rat brain, even when its breakdown was inhibited. The study used highly sensitive methods to detect trace substances and examined whether administered DMT could be stored in serotonin neurons.
Scientists have identified specific patterns of brain chemical activity in honey bees that predict how quickly individual bees learn new associations. The findings may help explain why humans learn at different speeds and provide implications for understanding brain disorders.
A new study from Texas Biomedical Research Institute found that low-dose THC significantly reduced side effects and inflammation caused by HIV and antiretroviral therapy. The treatment also increased serotonin levels, lowered cholesterol and toxic bile acids, and improved cardiovascular health.
Scientists found that activating specific neurons in the claustrum region of male rats under psychedelic exposure strengthens connections to areas implicated in psychiatric diseases, potentially explaining how psychedelics improve memory and symptoms. The study suggests a new pathway for understanding psychedelics' therapeutic effects.
Research from the University of Gothenburg has identified two bacteria that can produce bioactive serotonin, a key player in bowel movements and brain function. These findings suggest new avenues for treating functional gastrointestinal disorders like IBS.
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.
Researchers identify abnormal sugar modifications linked to depressive behaviors, offering potential diagnostic and therapeutic targets. Chronic stress disrupts sugar chains in the prefrontal cortex, triggering depression.
Scientists have discovered a distinct neurochemical signature that sets Parkinson's disease apart from essential tremor, two common movement disorders. In a new study published in Nature Communications, researchers identified unique chemical signaling patterns of dopamine and serotonin that distinguish these conditions.
Researchers identified how the brain assigns positivity or negativity to social experiences through a complex neural circuitry involving the hippocampus. They discovered that serotonin and neurotensin release opposing signals in the ventral CA1 region, which can be leveraged for future therapies.
A University of Ottawa-led study reveals that serotonin neurons are connected and interact with each other, controlling serotonin release in specific regions of the brain. This complex system has implications for understanding decision-making and developing targeted therapeutics for mood disorders.
A study found that intermittent fasting increases sex drive in male mice by lowering serotonin levels, which is linked to tryptophan deficiency. The researchers suggest that similar mechanisms may exist in humans and view fasting as a potential approach for treating low libido.
A new observational study suggests that antidepressants can accelerate cognitive decline in people with dementia, while certain medications appear to be less harmful. Researchers analyzed data from 18,740 patients and found that selective serotonin reuptake inhibitors (SSRIs) were associated with the fastest cognitive decline.
Researchers at Salk Institute discover SSRIs like Prozac regulate immune response, preventing sepsis in mice. The findings suggest a potential new use for the popular drug, which could lead to life-saving treatments and enhanced global preparedness for pandemics.
Research finds that cerebellar serotonin alleviates anxiety-like behavior in mice, suggesting a new treatment approach. The study's findings counter previous ideas and provide insights into the neural circuits driving anxiety.
Researchers found neurotransmitters in the human brain are released during emotional language processing, providing insights into how words shape our choices and mental health. The study bridges biology and symbolism, linking neural processes to human communication and emotion.
Researchers at Baylor College of Medicine discovered that GABA and dopamine signals work synergistically to regulate meal initiation. The study's findings have implications for developing improved therapies to manage obesity, a worldwide epidemic.
Researchers found that targeting antidepressants to intestinal cells reduces anxiety and depressive behaviors in mice, and may offer a better alternative to current treatments during pregnancy. The study suggests that increasing serotonin signaling in the gut can impact gut-brain communication and ultimately mood.
Increasing serotonin levels in the gut epithelium improves symptoms of anxiety and depression in animal studies, suggesting a new therapeutic approach. The study also highlights the risk of digestive issues in children exposed to antidepressants during pregnancy.
Studies have shown that the lateral habenula regulates stress-related respiratory responses via the monoaminergic system, which includes dopaminergic and serotoninergic pathways. Researchers found that electrical stimulation of the LHb mimicked a stress state in rats, significantly increasing respiratory frequency.
A Brazilian researcher at Harvard identified serotonin as the central role in postprandial hypoglycemia, a common complication of bariatric surgery. The study found that serotonin levels increase significantly after meals in affected individuals, unlike those without symptoms.
A recent study from Stanford University reveals that dopamine and serotonin work together, but also in opposition, to shape behavior. Researchers found that dopamine signals increase with reward prediction while serotonin signals decrease, but only when both systems are active can animals learn to link cues with rewards.
Researchers found that serotonin release scales with the value of rewards, indicating its role in monitoring reward quality. The study used a new biosensor to measure serotonin levels in mice receiving varied concentrations of evaporated milk as rewards.
Researchers discover 5-HT2A receptor selectively suppresses visual information strength without inhibiting parallel processes. This mechanism regulates the importance attached to incoming information, which could help develop new therapies for psychiatric diseases.
A study at the University of Bonn has revealed that fly larvae have special sensors triggered by swallowing, releasing serotonin to continue eating. This control circuit may also exist in humans and could help understand eating disorders such as anorexia or binge eating.
A team led by Weiying Lin created a molecular probe that selectively detects serotonin, a key player in depression. The study suggests that the ability of neurons to release serotonin is more critical than serotonin levels themselves.
Researchers at UNIL find that observing others cope with trauma increases resilience and prevents pathological states. Serotonin release in the habenula brain structure is identified as the key mechanism, offering new perspectives for understanding depression and treatment.
Researchers at the University of Birmingham have discovered that male fruit flies ignore physical threats as they pursue a female fly, driven by the neurotransmitter dopamine. As courtship advances, dopamine levels increase, blocking sensory pathways and reducing the ability to respond to threats.
Researchers at Washington University in St. Louis have found that serotonin increases the amplitude of neural responses to food-related odors in locusts, while ignoring non-food smells. This discovery sheds light on how sensory signals are processed and could inspire solutions for odor detection in toxic environments.
Researchers discovered that serotonin-producing neurons slow tumor growth by regulating histone serotonylation, while other neural circuits promote tumor growth. Restoring neurotransmitter levels also slows down tumor progression.
Antidepressants, such as SSRIs and SNRIs, work by restoring connections between brain regions, rather than correcting a chemical imbalance. The framework highlights the importance of these medications in alleviating depressive episodes, even if MDD isn't caused by a lack of serotonin.
Researchers at OIST used a novel technique to study how activating the brain's serotonin center affects awake animals. They found that serotonin from the dorsal raphe nucleus (DRN) activates brain areas influencing behavior and motivation, including the cerebral cortex and basal ganglia.
A new study has identified two proteins that play a vital role in modulating cell responses in schizophrenia. The researchers found that these proteins can be targeted to develop drugs that address specific symptoms of the disease, potentially leading to more effective and personalized treatments.
Scientists from Nagoya University identified signaling from serotonin neurons as important for maintaining reproductive function by sensing glucose availability. This discovery provides an explanation and possible treatment for decreased fertility observed in people with depression.
Researchers found that gut bacteria in newborns produce serotonin, promoting the development of immune cells called Tregs. This helps prevent allergic reactions and autoimmune diseases. The study suggests that unique gut bacteria may supply neurotransmitters needed for critical biological functions during early development.
Researchers have discovered a previously unknown neurochemical mechanism behind human tendency to make decisions based on social context. The study reveals the dynamic interactions of dopamine and serotonin in the brain's substantia nigra area, which contribute to our brain's overall assessment of value during social interactions.
Researchers at Flinders University uncovered a major breakthrough in understanding the gut-brain axis, revealing that serotonin released from gut cells must communicate via diffusion to activate sensory nerve endings. This discovery has profound implications for drug development and treatments of mental health and digestive problems.
Researchers found lower levels of serotonin transporter and higher levels of amyloid-beta protein in brains of people with mild cognitive impairment, a potential target for treatments to slow or stop disease progression. Further research is needed to study the role of serotonin in disease progression.
Scientists at Imperial College London have found that cells within hair follicles can detect touch and release neurotransmitters serotonin and histamine. This discovery may help understand histamine's role in inflammatory skin diseases like eczema.
A new study reveals that esketamine nasal spray is effective in treating treatment-resistant depression, with 27.1% of patients achieving remission after 8 weeks compared to 17.6% on quetiapine XR. Long-term data shows sustained remission rates at 21.7% for esketamine NS and 14.1% for quetiapine XR.
A single neuron in C. elegans worm uses multiple neurotransmitters to control egg-laying and locomotion, demonstrating the ability to 'borrow' serotonin from other neurons. The study reveals how a single neuron can influence complex behaviors over multiple timescales.
Scientists have discovered that genes required for complex behaviors like learning, memory, and aggression originated around 650 million years ago. This finding has significant implications for understanding the evolutionary origin of these behaviors and their neural circuits.
In a new study, Salk Institute scientists discovered that dopamine regulates anxious worm behavior in the presence of nipping predators. The findings illuminate how this dopamine-regulated brain pathway may be related to anxiety and could provide insight into human conditions like PTSD.
Researchers at Reichman University developed a comprehensive biological model that unifies the processes impacting postpartum depression (PPD) and its symptoms. The model highlights four main factors leading to PPD: immune system activity, continuous stress, hormonal imbalance, and reduced activities involving closeness.
Researchers found altered serotonin 2A/C receptor binding in brain stems of infants who died from SIDS, suggesting a biological basis for the condition. The study suggests that specific combinations of genetic vulnerability, external stressors, and critical developmental periods may contribute to SIDS.
Researchers at MIT's Picower Institute used a nematode worm to study serotonin's effects on behavior and brain activity. They identified three key receptors driving slowing behavior and found complex interactions between serotonin receptors modulating brain-wide activity.
A new study found that selective serotonin reuptake inhibitors (SSRIs) improved the quality of aging females' egg cells in roundworms by reducing embryonic death and chromosomal abnormalities. Replication in fruit flies confirmed the findings, suggesting a shared signaling system between species.
A pilot study found that patients who listened to their favorite music experienced reduced nausea severity and distress. Music was believed to affect serotonin levels, a neurotransmitter associated with chemotherapy-induced nausea, in a way that could complement medication.
Scientists create optical imaging method to detect specific neurotransmitters serotonin, dopamine, and acetylcholine using fMIP-NPs. The technique demonstrates feasibility in selective detection of neurotransmitters released in the brain.
Researchers discovered a significant increase in serotonin transporter density in the midbrain of patients with PMDD during the periovulatory phase, which was associated with increased depressed mood. The study suggests that taking SSRIs at specific times during the menstrual cycle may help target these changes and alleviate symptoms.
A team of scientists has created an implantable microsensor that can measure serotonin levels in the brain in real-time without deactivation. This breakthrough could improve diagnosis and treatment of mental illnesses. The sensor uses galvanic redox potentiometry to detect serotonin concentrations over a broad range.
A study by Pusan National University researchers found that countries closer to the equator have higher suicide rates due to decreased sunlight exposure. The prevalence of suicide increased with latitude, and was found to be higher in men than women, with age also being a significant factor
A new study led by Columbia researchers discovered a link between serotonin and heart valve disease, specifically degenerative mitral regurgitation. The study found that patients taking selective serotonin reuptake inhibitors (SSRIs) were more likely to develop severe mitral regurgitation and require surgery at a younger age.
Researchers found that selective serotonin reuptake inhibitors (SSRIs) affect reinforcement learning, leading to reduced sensitivity to rewards and emotional dullness. The study provides new insights into the mechanisms behind this common side effect.
Researchers at Hokkaido University identify a nerve pathway in the brain stem involved in processing rewarding and distressing stimuli, opposing a previously identified pathway. This finding could lead to developing drug treatments for mental disorders like addiction and major depression.