Articles tagged with Dopamine
A UC Riverside-led study identified two hormones (ecdysis triggering hormone and juvenile hormone) and a neurotransmitter (dopamine) that regulate courtship memories in males. The study found that these molecules are critical to maintaining aversive memories of failed courtship attempts, influencing future behaviors.
Researchers found that Parkinson's disease may be caused by maladaptive brain rewiring in the subthalamic nucleus, leading to impaired movement. The study challenges the traditional understanding of brain dysfunction in Parkinson's disease.
Researchers have identified a toxic cascade in Parkinson's disease and found that treating dopamine neurons with antioxidants early on may prevent degeneration and improve neuron function. The study also highlights the importance of studying human neurons to develop new therapies.
Neurons can dynamically modify their dopamine content by adjusting vesicle acidity, contradicting the existing textbook model. This finding has important implications for understanding dopamine-related diseases like schizophrenia and Parkinson's disease.
Researchers studying fruit flies have found that a neurotransmitter called dopamine regulates social space, with too little or too much release causing male and female fruit flies to adjust their distance. The discovery may lead to new insights into disorders where personal space is an issue.
Researchers found that dopamine-producing neurons directly control the brain's circadian center, regulating eating cycles and metabolism. This discovery may lead to new treatments for jet lag, shift work, and related pathologies.
Researchers found that mice fed a high-fat diet exhibit withdrawal-like stress responses when switched to a low-fat diet, with dopamine levels impacted by stress signals. Blocking these signals normalizes the dopamine system, preventing binge-eating when the high-fat diet is reintroduced.
A high-fat diet from childhood may increase sensitivity to dopamine later in adulthood, leading to increased reward-seeking behavior. The study found that male rats exhibited increased locomotor activity and dopamine cell activity after a high-fat diet exposure.
Researchers at McGill University found that cues associated with cocaine consumption trigger dopamine release in the dorsal striatum, a structure involved in compulsive behavior, even among non-dependent users. This suggests that recreational users may be further along the road to addiction than they realize.
Researchers identified specific dopamine wedge neurons responsible for driving fruit flies' food preferences towards what they need. After protein deprivation, these neurons released a chemical signal that directed the flies to seek out their main protein source, yeast.
A University of Kansas researcher suggests a possible therapeutic intervention for chemobrain, a cognitive impairment plaguing up to a third of cancer patients following chemotherapy. The study found that KU-32 prevents cognitive decline in rats caused by chemotherapy treatment by inducing the heat shock response.
Researchers used PET scans to study dopamine levels in patients with migraines and healthy individuals. The study found that dopamine levels fell significantly during migraine attacks, which may contribute to increased sensory sensitivity. This suggests that dopamine-based therapies could be effective in managing migraines.
Researchers at Thomas Jefferson University found significant changes in dopamine and serotonin transporters after a seven-day spiritual retreat, leading to increased positive emotions and self-transcendence. The study suggests that such retreats could prime the brain for spiritual experiences.
Researchers at the University of Turku found that SPECT imaging does not correlate with the number of dopamine neurons in the substantia nigra, a key area affected by Parkinson's disease. This discovery has significant implications for future treatment development and monitoring.
Researchers at Cold Spring Harbor Laboratory found that dopamine-releasing neurons factor ambiguity into predictions, enabling effective learning and decision-making. The study adds a new dimension to our understanding of brain function, suggesting that these neurons are more sophisticated than previously thought.
Researchers suggest that complex neural dynamics and prefrontal cortex activity contribute to alcoholism. Dopamine neurons' response mode can vary depending on synaptic input patterns, potentially leading to addiction.
Researchers at Salk Institute find that changing dopamine levels can alter upcoming choices, suggesting new avenues for treating Parkinson's and OCD. The study uses advanced techniques to measure dopamine concentration in mice brains, revealing a tight association between brain chemistry and decision-making.
The new device, an array of tiny carbon electrodes, measures dopamine levels at millisecond timescales and can be used to monitor therapies aimed at boosting dopamine levels. The researchers found that dopamine levels vary greatly across the striatum, with implications for understanding learning and brain disorders.
Despite significant weight gain, anorexia nervosa patients' brains continue to exhibit elevated reward systems, suggesting a prolonged recovery period. The study suggests that neurotransmitter dopamine plays a key role in the disease's pathology and may require targeted treatments.
Researchers discovered a connection between the SV2C protein and dopamine release in the brain, suggesting that drug therapies targeting SV2C may be beneficial for PD patients. The study found altered SV2C levels only in PD brains among patients with various neurodegenerative diseases.
A new study by Northeastern University psychologist Lisa Feldman Barrett found that the neurotransmitter dopamine plays a crucial role in human bonding. The research, which used a novel technology to scan mothers' brains while interacting with their infants, showed that strong social relationships can improve outcomes for individuals w...
Researchers discovered how a protein called WAVE1 regulates brain response to cocaine, providing fundamental insights into the brain's inner workings. The study suggests new potential treatments for cocaine addiction and highlights the importance of understanding dopamine signaling.
Researchers discovered that immigrant populations have altered brain chemistry, specifically higher levels of dopamine, which can increase the risk of schizophrenia. The study suggests that social stress is a key factor contributing to this increased risk, and targeted interventions may help mitigate it.
A new dopamine hypothesis of schizophrenia proposes a biological basis for the disorder, with dopamine signaling playing a key role in its development. The hypothesis has been revised numerous times since clinical observations first implicated dopamine decades ago.
A study in obese mice reveals that physical inactivity is linked to altered dopamine receptors, contradicting the assumption that excess body weight is the primary cause. The research suggests that dopamine signaling defects contribute to reduced movement in obesity.
A new study reveals that brain stimulation can improve timing abilities in mice lacking dopamine, a key player in Parkinson's disease. The breakthrough finding suggests that targeted brain stimulation could be used to treat cognitive problems caused by PD and possibly other conditions.
A team of neuroscientists has identified neural circuitry in a deep region of the mouse brain that modulates judgments of elapsed time. The discovery may help explain why time seems to fly or stretch depending on our emotions and attention.
A novel analysis in mice reveals that dopamine neuron activity plays a key role in judgment of time, slowing down the internal clock. The study found that transient activation or inhibition of dopamine neurons was sufficient to slow down or speed up time estimation.
Dopamine neurons use a mathematical approach to predict errors, responding similarly across individual neurons. This uniformity simplifies information coding, allowing prediction errors to be broadcasted robustly throughout the brain.
Researchers at Iowa State University found a gene mutation linked to an accelerated onset of Parkinson's disease in Caucasians, with those under 50 experiencing symptoms 5 years earlier and a 45% increased risk. The study also highlights the importance of blood cholesterol levels, which are directly related to dopamine production.
Researchers at Lund University have made a significant breakthrough in producing high-quality dopamine neurons using stem cells. The study has identified key markers that correlate with successful transplantation and graft function, enabling a more accurate methods for producing dopamine cells for clinical use.
Researchers at Massachusetts General Hospital discovered that stimulating dopamine neurons in mice receiving general anesthesia triggers signs of arousal, including movement and increased respiratory rate. This finding could lead to the development of new therapies to treat conditions like traumatic brain injury and coma.
Activating dopamine neurons in the ventral tegmental area of the brain causes active emergence from general anesthesia. This could lead to faster recovery times and reduced side effects for patients. The researchers are now conducting further experiments to confirm these findings and develop a new treatment.
Research suggests that mutations in the FTO gene and variants of the dopamine D2 receptor gene increase the risk of developing obesity and diabetes. The study found that individuals with both genetic alterations had a higher percentage of body fat, more abdominal fat, and lower insulin sensitivity.
A study by the University of Edinburgh has found that attention-grabbing experiences activate a specific area of the brain, releasing memory-boosting chemicals. Researchers discovered that mice who had new experiences just before or after learning a new location remembered it better the next day.
A new study in mice finds that dopamine release from the brain's locus coeruleus region can enhance memory retention. The researchers used optogenetics to activate dopamine-carrying neurons and found a direct, long-lasting synaptic strengthening that improved learning and memory.
Researchers have developed a new technique to observe brain activity in real-time, enabling them to study how we learn and develop addictions. The 'CNiFERs' tool measures the release of specific neurotransmitters, revealing the timing of dopamine surges during learning and addiction processes.
A study by Duke University researchers found that manipulating dopamine signaling can control inflammation in the gut, providing a proof of principle for using drugs originally designed to target the nervous system to treat immune system disorders such as rheumatoid arthritis and autoimmune disease.
The article explores the link between reward deficiency syndrome, dopamine dysregulation, and amino-acid therapy. Research suggests that individuals with certain gene variants may benefit from neuronutrient-amino-acid therapy to prevent addictive behaviors.
The Georgia Institute of Technology researchers have created an interactive model of the brain's chemical balance to simulate major systemic changes in schizophrenia sufferers. This tool depicts chemical underpinnings in simple graphics, helping clinicians better understand the disease and test hypotheses virtually.
Researchers found that brain dopamine function returns to normal three months after quitting smoking, indicating chronic smoking may cause smoking-related deficits. This suggests the possibility of treatments targeting dopamine systems in smokers.
Researchers at WashU Medicine discovered a region of the brain involved in decisions made under uncertainty and identified cells that suppress value-coding neurons when making a risky choice. This study could lead to treatments for psychological disorders, such as problem gambling and anxiety disorders.
Researchers found that an FDA-approved cancer drug increased brain dopamine and reduced toxic proteins linked to Parkinson's disease progression. The study showed significant signs of benefit for patients with neurodegenerative diseases, including improved cognitive and motor functions.
Researchers at Northwestern University have identified a new framework for understanding the role of dopamine neurons in movement control and learning/reward. The study found two distinct populations of dopamine neurons, one carrying signals for motor control and movement, and the other transmitting signals about unpredicted reward.
A European study led by Umea University Professor Lars Nyberg found a positive link between the dopamine D2 receptor and long-term episodic memory, which often declines with age. The research suggests that impairment of the dopamine system may play a crucial role in understanding age-related cognitive decline.
A preliminary clinical trial suggests that n-acetylcysteine improves dopamine levels and cognitive function in patients with Parkinson's disease. The study used brain imaging studies to track changes in dopamine levels and found significant improvements in both measures.
Researchers at UCLA discovered that people with Parkinson's disease have impaired decision-making, particularly when sensory information is weak. This finding suggests that the neurological factors underlying Parkinson's may be more complex than previously thought and could lead to earlier detection strategies.
A new study published in Diabetes suggests that age and dopamine receptors may play a role in the preference for sweet foods in people with normal weight, but not in those with obesity. The researchers found that insulin resistance could contribute to the altered brain response in obese individuals.
Researchers found dopamine signaling in the cerebral cortex predicts changes in brain network communication during working memory. This study may lead to better treatments for schizophrenia and other psychiatric disorders by optimizing dopamine signaling.
Researchers found that kidney-specific deletion of the D2 dopamine receptor increased inflammation and hypertension, while restoration of DRD2 expression decreased these effects. The study suggests that targeting DRD2 may be a useful approach for treating renal injury.
A new study of over 25,000 people found that declining levels of dopamine in the brain may be responsible for older people's reduced willingness to take risks for potential rewards. Older adults were less likely to choose risky gambles to win points, but not to avoid losing points.
Researchers studied Parkinson's-affected cells before symptoms appear, finding declines in dopamine neuron function and electrical activity. The study aims to understand the root cause of the disease and develop a therapy to arrest its progression.
Princeton University researchers used advanced techniques to record dopamine neuron activity in the striatum, finding that these neurons not only encode reward but also directly control movements. This discovery challenges current understanding of dopamine's role in movement-related disorders like Parkinson's disease.
A study by Columbia University Irving Medical Center found that heavy cannabis users have lower dopamine release in the brain's striatum, a region involved in working memory and attention. This effect is similar to other addictive substances and may impair learning and behavior.
A new study from Karolinska Institutet reveals a feedback regulatory system through which dopamine controls its own activity, regulating prolactin levels and potentially mitigating sexual side effects of antipsychotic drugs.
A rat study found that adolescent amphetamine abuse leads to long-lasting changes in brain function, affecting dopamine signaling and prefrontal cortex development. These changes persist into adulthood, contributing to behavioral consequences like addiction and relapse.
Researchers found that neural circuits in the striatum, a subcortical part of the forebrain, are involved in both pleasure and caloric value perception. The brain prioritizes energy storage over palatability, suggesting a link between sweetness and calorie craving.
Baylor College of Medicine researchers have developed a new mathematical tool that combines biochemistry and computational analysis to identify specific structural changes in the dopamine 2 receptor, which helps maintain its structure and function throughout an evolutionary time scale. This discovery opens the possibility for better dr...
A study on Bengalese finches found that dopamine levels in a specific region of the brain are crucial for correcting vocal errors. The research suggests that dopamine plays a vital role in sensory-motor learning, which underlies skills such as speaking and singing.
Research reveals that dopamine regulates both rewarding and aversive behaviors in mice, enabling them to learn and remember to avoid negative situations. The study's findings have implications for understanding post-traumatic stress syndrome.