Articles tagged with Dopaminergic Neurons
Researchers discovered a brain circuit necessary for unlearning fear in rats. Dopamine activity is crucial for fear extinction, but its specific role varies depending on the brain region involved.
A Journal of Neuroscience study found that a transcription factor called FosB plays a key role in regulating aggressive behavior in mice. Increased FosB levels were linked to increased aggression intensity and dominance.
A new University of Guelph study has discovered that exposure to pesticides like paraquat and maneb increases the risk of developing Parkinson's disease. Low-level pesticide exposure disrupts cells in a way that mimics genetic mutations, drastically increasing disease onset risk.
Researchers discovered that dopamine neurons respond to novel images but not familiar ones, indicating a key role in episodic memory formation. This finding has implications for understanding and treating diseases like Parkinson's, which often accompany cognitive issues such as memory problems.
Researchers discovered that brain's midbrain encodes errors in identity expectations, updating frontal lobe for decision-making. Dopamine neurons likely involved in encoding these errors.
Researchers have identified a novel pathway that sustains the health of dopamine neurons in C. elegans worms. The swip-10 gene's normal actions to protect dopamine neurons are indirect, derived from its action in glial cells that lie adjacent to the dopamine neurons.
Researchers at Harvard Medical School have identified the molecular machinery responsible for precise dopamine release in the brain, challenging current models of dopamine signaling. The study found specialized active release sites that enable fast and spatially precise secretion of dopamine.
Researchers discovered that a 'puff' of dopamine before movement initiation is essential for normal motor function, not constant dopamine levels. This finding may lead to more effective treatments with fewer side effects for Parkinson's disease.
A study using fruit fly models reveals that a genetic mutation in the DNAJC13 gene leads to the accumulation of α-synuclein protein, causing motor dysfunction and neurodegeneration. This finding provides new insights into the molecular mechanisms of familial Parkinson's disease and may lead to the development of disease-modifying thera...
Researchers are investigating a novel treatment approach for Parkinson's disease by inhibiting the protein Bach1, which blocks the body's natural protection against oxidative stress. By removing Bach1, scientists aim to restore balance and promote the activation of neuroprotective genes.
Researchers found that neurons in the brain's 'reward center' fired more rapidly in response to alcohol when estrogen levels were high. This increased sensitivity may play a role in the development of addiction in women, particularly during certain stages of their menstrual cycle.
Researchers found that LRRK2 is necessary for the survival of dopamine-containing neurons in the brain, which are affected by Parkinson's disease. The study could alter treatment approaches against the disease.
Researchers at City College of New York are exploring Sonic Hedgehog as a potential treatment for Parkinson's Disease. They have found that dopamine neurons secrete SHH, which can help reduce symptoms like dyskinesia, and are now testing Smoothened agonists in both mice and macaques.
Researchers found that LRRK2 gene mutations cause age-dependent dopaminergic neuron degeneration and impair the autophagy-lysosomal pathway in mice. The study suggests an essential role of LRRK in DA neuron survival and regulation of the autophagy-lysosomal pathway in the aging brain.
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.
Scientists have successfully generated dopaminergic neurons in a non-human primate model using induced pluripotent stem cells (iPSCs) derived from adult marmoset monkeys. This breakthrough advances the use of marmosets as a model for Parkinson's disease, enabling the development of regenerative medicine approaches.
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 fluid changes in a specific brain area could provide a way to track Parkinson's damage, with increased free water linked to worsening symptoms and progressive degeneration of neurons.
Researchers at California Institute of Technology have identified a neural circuit in the brain that controls wakefulness. The discovery could lead to new treatments for insomnia and other sleep disturbances. The study found that stimulating these neurons with light can help overcome tiredness, while silencing them can induce sleep.
Researchers at Texas A&M University found that brain damage from stroke can increase an individual's preference for alcohol over water. The study used animal models and suggested that the brain's response to a stroke may play a role in increasing alcohol-seeking behavior.
Researchers identified neural circuits behind sensory deficits in Parkinson's disease by studying mice with dopamine-depleted brains. The study found that treating mice with L-DOPA restored their ability to distinguish between left and right whiskers, offering new avenues for earlier diagnosis.
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.
Researchers monitored neural activity of mated female fruit flies during yeast deprivation, identifying dopamine neurons that regulate protein appetite. Activation/inhibition of these neurons affects yeast preference and consumption, with increased activity linked to advancing hunger.
Researchers have discovered that doxycycline can reduce α-synuclein aggregation and improve symptoms in animal models of Parkinson's disease. This could lead to a potential treatment option for the degenerative condition.
Researchers identified kappa opioid receptors as key players in stress-induced relapse to cocaine addiction. A new medicine, norBNI, was shown to reverse relapse even a day after stress occurred by restoring normal GABA signaling via the JNK pathway.
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.
A gene variant that produces red hair and fair skin in humans and mice has been found to contribute to the association between melanoma and Parkinson's disease. The study shows that mice carrying this variant have reduced dopamine production and increased sensitivity to toxins, making them more susceptible to neurodegeneration.
Researchers at the University of Freiburg discovered that dopamine release is triggered by tactile and visual stimuli in the forebrain, affecting brain function. This finding may lead to new treatments for restless leg syndrome, a condition causing unpleasant sensations during sleep.
A study by Prof. Dr. Wolfgang Driever and his team discovered that specific tactile and visual stimuli activate dopaminergic nerve cells in the forebrain, affecting brain function and basic behaviour. This finding could lead to new treatments for conditions like restless leg syndrome.
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.
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.
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.
A study by University of Pennsylvania researchers found that stressed rats drink more alcohol due to altered dopamine signaling and changes in the brain's reward system. The team's findings have implications for understanding the root causes of post-traumatic stress disorder (PTSD) and developing new treatments.
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.
Researchers discovered that intestinal cells' immune response acts like detectives to identify damaged machinery within neurons and discard defective parts, protecting vital neurons. This innate mechanism, originating in the intestine, may hold the key to preventing Parkinson's disease.
A team of Stanford University School of Medicine researchers discovered a critical defect that precedes the death of nerve cells in Parkinson's disease, impairing mitochondria function. This finding may lead to earlier diagnoses and new treatment approaches for the condition.
Researchers discovered that ion channel Sandman plays a critical role in sleep control. When dopamine levels increase, Sandman moves outside the cell, effectively shutting down sleep-control neurons and leading to wakefulness.
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 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.
Scientists have pinpointed D2 neurons as key players in regulating drinking behavior, discovering they discourage action and inhibit excessive consumption. Activating these 'no-go' neurons could help prevent problem drinking behavior, paving the way for new treatments.
A team of scientists has discovered that two genes associated with Parkinson's disease are key regulators of the immune system, providing direct evidence linking Parkinson's to autoimmune disease. The study found that proteins produced by these genes can prevent cells from being detected and attacked by the immune system.
Researchers found that neurodegeneration in Parkinson's disease stems from endoplasmic reticulum stress rather than mitochondrial failure. ER stress prevents neurons from producing vital proteins, leading to their death. By blocking ER stress, scientists were able to prevent neurodegeneration in mutant flies.
Researchers developed a novel robot microscope system to track freely moving small animals and manipulate their brain activity. The system, called OSaCaBeN, uses projection mapping to reveal functional diversification of dopamine-releasing nerve cells in the nematode C. elegans.
Researchers found that myricitrin can help maintain two key functions of mouse neurons exposed to neurotoxicity, including enzymatic activity and rapamycin complex 1 activation. The study suggests that myricitrin could have a role in preventing neuronal degeneration in Parkinson's disease.
Researchers discovered mutations in TMEM230, a new gene linked to Parkinson's disease, in patients from North America and Asia. The gene produces a protein involved in dopamine packaging in neurons, which is crucial for movement disorder diagnosis.
Research by McGill University scientists found that juvenile zebra finches learned adult songs better when interacting with an adult, mimicking human-like speech adjustments. The study suggests social interaction can enhance vocal learning, which may have implications for treating autism and other developmental disorders.
Researchers found that a JAK/STAT pathway inhibitor, AZD1480, reduces neuroinflammation and neurodegeneration in Parkinson's disease rat models. The study suggests that Jakinibs may be an important new approach to slow the progression of the disease.
Researchers at Lund University have proven that transplanted nerve cells can survive and function in the human brain for many years, restoring normal dopamine production. A study followed a Parkinson's patient whose nerve cells survived for nearly a quarter of a century after transplantation.
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.
Researchers at Nagoya University have uncovered a dopamine signaling pathway that controls cocaine reward in mice. The study found that activation of the Rap1 pathway increases neuronal excitability and sensitivity to cocaine reward.
Researchers at McGill University found a connection between noradrenergic neurons and depression vulnerability. Increased dopaminergic neuron activity corresponds to depression, while noradrenergic neurons control this activity, influencing resilience or vulnerability.
A study published in Cell Press identified a neural circuit mediating social seeking behavior driven by a loneliness-like state in mice. The discovery sheds light on the neuroscience of isolation and may help understand social anxiety and autism spectrum disorders.
The study reveals the mechanics of dopamine transport into and out of neurons, shedding light on its role in various brain-related functions. The findings have significant implications for understanding and treating diseases related to dopamine imbalance, such as Parkinson's disease and schizophrenia.
A TSRI study reveals that a specific endocannabinoid called 2-arachidonoylglycerol (2-AG) acts as a molecular switch to increase motivation to consume nicotine. By blocking its production, compounds like 1,2,3-triazole urea inhibitors may restore the brain's balance and reduce nicotine's effects.