Articles tagged with Astrocytes
Researchers discovered a link between the astrocytic urea cycle and Alzheimer's disease memory loss. The study found that the urea cycle helps clean up toxic amyloid-beta aggregates, but its activation also causes the production of harmful byproducts, leading to neuronal death.
Researchers developed a low-cost 3D model of the brain to study SARS-CoV-2's neurological effects. The adapted virus replicates 30 times more efficiently in astrocytes than neurons, highlighting the importance of these cells in central nervous system infection.
Researchers at Cedars-Sinai have comprehensively mapped molecular activity in the brain and spinal cord that regulates body's response to central nervous system (CNS) disorders. They discovered a critical role of astrocytes, specialized support cells, in regulating outcomes for CNS disorders.
A team of researchers has developed a novel method using infrared imaging to assess glymphatic function, which is crucial for understanding neurological conditions. The technique allows for the measurement of temporal dynamics of glymphatic functions and provides insights into brain fluid exchange and clearance.
Astrocytes, comprising nearly half of all brain cells, have been found to perform an electrically active function that influences neurotransmitter release and brain disease pathology. This discovery opens new avenues for neuroscience research and potential treatments for conditions like Alzheimer's and epilepsy.
A preclinical study suggests that astrocyte abnormalities may contribute to repetitive behaviors and memory deficits in autism spectrum disorders. Researchers grew human astrocytes from patients with ASD and transplanted them into healthy mice, which developed repetitive behaviors but not social deficits.
Researchers discovered newborn neurons and immature astroglia in patients with epilepsy, which could lead to new anti-seizure medications. The study suggests that targeting immature astroglia may be an effective approach to controlling seizures without aggressive brain surgery.
Researchers have found a possible target for ALS treatment in astrocyte abnormalities. Astrocytes, a subtype of cells in the central nervous system, are involved in motor neuron death, leading to muscle weakness and paralysis. The study offers hope for developing new drugs to block this process.
Researchers created cortical organoids from patients' skin cells, mimicking focal cortical dysplasia and identifying mechanisms involved in its emergence. The model can be used to screen existing medications for patients with severe epilepsy.
A new study suggests that a high-salt diet can lead to the hyperactivity of brain cells, resulting in increased constriction of blood vessels and worsening of cardiometabolic diseases. The research also found that excessive salt consumption can trigger an unusual response in which neurons become more active despite reduced blood flow.
Researchers found that targeting astrocytes, an inflammatory cell in the brain, reduces tau-related brain damage and inflammation in mice. The findings suggest suppressing inflammatory astrocytes may benefit in reducing brain inflammation and delaying Alzheimer's progression.
A recent study found that stimulating reactive astrocytes promotes the elimination of toxic protein aggregates in Huntington's disease. This cooperative mechanism between neurons and astrocytes holds promise for potential treatments.
The study highlights the need to analyze molecular markers, such as genetic sequences or brain proteins, to obtain more accurate assays, diagnoses and therapies. The results show changes in astrocytes attempting to adapt to toxic environments from the disease, worsening its progression.
Researchers discovered that an inorganic polyphosphate released by nerve cells contributes to the death of motor neurons in people with ALS and frontotemporal dementia. The study found that lowering levels of this toxin may be an innovative therapeutic strategy for diverse types of ALS/FTD.
A study found that intact astrocyte networks are essential for neural homeostasis, synaptic plasticity, and spatial cognitive abilities in adult mice. Disrupting these networks impairs spatial learning and memory due to altered neuronal excitability and compromised synaptic transmission.
A study published in Cell Reports reveals that the APOE4 variant increases the risk of Alzheimer's disease by triggering the secretion of potentially toxic lipids in astrocytes. This secretion can lead to the accumulation of harmful lipids, which may contribute to neuronal death and disease progression.
Researchers have discovered that sigma 1 receptor plays a crucial role in protecting retinal ganglion cells from damage in glaucoma. The protein enables astrocytes to secrete supportive factors for neurons, improving their survival and function.
Researchers at UCL have created a technique called magnetomechanical stimulation that uses microscopic magnetic particles to control touch-sensitive brain glial cells. This allows for precise and remote activation of astrocytes, providing a new tool for understanding their function and potential treatment of neurological disorders.
Researchers discovered that inhibiting the breakdown of a neuroprotective molecule called 2-arachidonoylglycerol (2-AG) in astrocytes promotes recovery from traumatic brain injury. The study suggests that targeting this molecule could lead to the development of new therapies for TBI-induced disease.
Neuroscientists have designed neural organoids with both mature neurons and astrocytic glial cells to study interactions between brain cells. The new technology enables the emulation of brain activity during healthy and disease states, opening doors to rapid drug screening for neurological diseases.
Researchers at OIST used advanced imaging to record signaling within single astrocytes, revealing ultra-fast signals on par with neurons and patterns of activity corresponding to different behaviors. The findings suggest that astrocytes may store memories as 'fingerprints' in specific areas, called hotspot maps.
Researchers will use transcriptomics and chemogenetics to identify molecular targets for pain management. The project aims to advance knowledge on pain mechanisms and develop novel therapeutic strategies.
Researchers found that astrocytes become pro-inflammatory and lose protective functions in ALS, leading to toxic build-up of glutamate that damages motor neurons. The study also identified distinct molecular patterns in astrocytes associated with different ALS-causing genetic mutations.
Researchers at University of Wisconsin-Madison discovered that increasing Nrf2 gene expression in astrocytes protects neurons from Alzheimer's disease progression. Boosting Nrf2 slowed cognitive and physical decline, reduced beta-amyloid accumulation, and reversed genetic changes in mouse models.
Researchers found that astrocytes regulate cognitive flexibility by releasing D-serine and glutamate, which integrates synaptic plasticity. Heterosynaptic long-term depression is mediated by astrocytes, critical for memory modification.
Researchers at UT Health San Antonio discovered that norepinephrine release in the visual cortex is tied to processing of imagery and cells' activation. This local regulation enhances sensory-specific attention and may represent a mechanism to enhance focus.
A USF Health study reveals that fibrinogen can directly interact with neurons, leading to inflammation and neurodegeneration in Alzheimer's disease and traumatic brain injury. The researchers found that blocking the binding of fibrinogen to its receptors may alleviate short-term memory problems associated with these diseases.
A team of scientists led by Associate Professor Nicola Allen found that astrocyte signaling is directly related to each stage of neuronal development. The researchers determined that astrocytes respond to neurotransmitters produced by neurons to control the timing of signal production, instructing neuronal growth and development.
A new study found that toxic fatty acids produced by astrocytes can trigger cell death in damaged neurons, which may contribute to neurodegenerative diseases such as glaucoma and Alzheimer's. Blocking the production of these fatty acids in mice preserved 75% of neurons, suggesting a promising target for treatment.
The Buck Institute has been awarded a $14.3 million grant from the NIH to study cellular senescence, a hallmark of aging, as a driver of Alzheimer's disease and other age-related dementias. Researchers will investigate new mechanisms that can be developed into interventions to treat patients.
Researchers at the University of Alabama at Birmingham discovered a small molecule that potently attenuates neuroinflammation in brain and glial cells. This finding presents a promising new approach to treat neurological diseases driven by neuroinflammation, such as stroke, spinal cord injury, and neuropathic pain.
A new study found that cholesterol produced by astrocytes is required for controlling amyloid beta production, leading to the accumulation of insoluble plaques. Blocking this cholesterol manufacturing reduced amyloid beta production in lab mice, offering a potential strategy against Alzheimer's disease.
A $992,000 VA Merit Review grant will fund research on non-neuronal activity after binge drinking to understand its impact on synaptic dysfunction and alcohol use disorder. The study aims to identify novel mechanisms, specifically astrocytes, involved in the dysregulation of neuronal activity.
Researchers found that astrocytes carrying the AD-associated APOE4 gene released more cholesterol, leading to increased beta-amyloid production in neurons. This study suggests modulating brain cholesterol could be a potential treatment option for Alzheimer's disease.
Researchers investigate G-quadruplex stabilization in neurons, astrocytes, and microglia, revealing differences in genomic instability and DNA repair pathways. These findings suggest that stabilized G4s contribute to brain aging and neurodegeneration.
A recent study published in eNeuro found that male-derived brain cells exhibit a stronger synaptogenic response to thrombospondin-2 compared to female-derived cells. This difference is driven by how neurons respond to the protein, resulting in varying synaptic formation mechanisms between sexes.
A study by Kyushu University researchers found that deficiencies in key genes lead to an imbalance in neural stem cells, resulting in fewer neurons and more astrocytes. This imbalance disrupts brain function and leads to Rett syndrome symptoms.
Researchers have discovered the crucial role of astrocytes in closing the period of brain plasticity following birth. Transplanting immature astrocytes into adult mice has been shown to reintroduce brain plasticity, suggesting a potential therapeutic strategy for rehabilitation after brain lesions or neurodevelopmental disorders.
Researchers led by Katie Baldwin found that the loss of hepaCAM disrupts astrocyte territories and gap junction coupling, leading to impaired communication between brain cells. This study has implications for understanding MLC and other neurodegenerative disorders, and may lead to therapeutic breakthroughs.
A UCLA-led study comparing human and mouse astrocytes found that mouse cells are more resilient to oxidative stress, a key mechanism behind many neurological disorders. The findings have important implications for basic and translational research into conditions like Alzheimer's disease, Parkinson's disease, and amyotrophic lateral scl...
Astrocytes play a key role in forming synapses between neurons. A new study has discovered that hepaCAM, a crucial protein, is essential for their communication and coordination. Lacking this molecule, astrocytes fail to form connections, leading to brain disorders like epilepsy and autism spectrum disorders.
New research reveals that obese mice do not increase the density of blood vessels in the hypothalamus when leptin is absent. However, increasing leptin levels promotes vessel growth via astrocyte activity. This study provides a paradigm shift in understanding how the hypothalamus controls blood pressure in obesity.
Researchers found that secondary infections trigger a heightened brain immune response, affecting memory and cognitive function in Alzheimer's disease. This over-response leads to knock-on effects on brain rhythms and cognition, similar to acute psychiatric disturbances like delirium.
A NYITCOM researcher has secured a $1.6 million NIH grant to study the role of brain cells called astrocytes in regulating dopamine signaling. The study aims to identify new therapeutic treatments for clinical depression, which affects over 260 million people worldwide.
Researchers are developing a method to convert astrocytes into neurons using the NeuroD1 gene, aiming to restore connections in the brain and spinal cord after an injury. The goal is to promote functional recovery for patients with spinal cord injuries, brain injuries, Alzheimer's, and other neurodegenerative diseases.
New research reveals SARS-CoV-2 can infect both neurons and astrocytes in the brain, leading to unpredictable neurological symptoms. Astrocytes play a key role in spreading the infection to neurons, contributing to severe effects in some patients.
Researchers at Karolinska Institutet have developed a new astrocyte-specific PET tracer, BU99008, which detects reactive astrogliosis in the brain. This finding could improve early diagnosis of Alzheimer's disease, with potential implications for other disorders related to astroglial dysfunction.
Researchers at Tohoku University have developed a new classification scheme for NMOSD, focusing on astrocyte degeneration and its four main types. The scheme provides a standardized approach for identifying the disease, which is distinct from multiple sclerosis and has more severe symptoms.
A Marshall University researcher has received a $400K NIH grant to investigate sex-dependent interactions in brain cell development, aiming to develop targeted therapies for individuals with autism and schizophrenia. The research will uncover novel roles of sex and hormones in brain development, shedding light on neurological dysfunction.
Researchers have identified a key pathway that regulates the transition of the brain from highly plastic to stable states in developing fruit fly larvae. This discovery has implications for understanding and potentially treating neurodevelopmental disorders such as autism, schizophrenia, and epilepsy, which are linked to the failure to...
Researchers at Charité - Universitätsmedizin Berlin have identified a new role for the protein drebrin in controlling scar formation and astrocyte reactivity following brain injury. This mechanism, which regulates membrane trafficking, may hold promise for treating neurological disorders such as Alzheimer's disease.
A recent study published in eLife reveals that astrocytes, a type of glial cell, can independently promote longer or deeper sleep in mice by manipulating slow-wave activity. The findings suggest that targeting astrocytes could lead to new insights into sleep disorders and brain diseases linked to sleep disturbances.
Researchers found that a synthetic cannabinoid activates astrocytes, which release adenosine to reduce nerve activity and tremors. This new approach may offer targeted treatment with fewer side effects for patients suffering from essential tremor.
The new project posits that deep neural networks struggle with real-world problems due to an overemphasis on neurons, which neglect the role of astrocytes. Integrating astrocytes could enhance DNN efficiency and performance.
Researchers found that astrocytes from patients with bipolar disorder secrete more IL-6, which worsens symptoms and negatively impacts neuronal activity. The study highlights the potential role of astrocyte-mediated inflammatory signaling in psychiatric diseases.
A study from MIT reveals the APOE4 gene variant causes widespread disruptions in brain cells' ability to metabolize lipids and respond to stress. Supplementing with choline may reverse these effects, offering a potential new approach to treating Alzheimer's disease.
Researchers at the Francis Crick Institute have identified the key cellular change that leads to harmful astrocytes in amyotrophic lateral sclerosis (ALS). The discovery could lead to new therapies to slow disease progression and is also relevant to other neurodegenerative diseases like Parkinson's and Alzheimer's. Understanding this c...
Researchers found that hymecromone, a spasmolytic drug, reduces the production of anti-inflammatory molecules in astrocytes. This could lead to new treatments for neurodegenerative diseases such as Alzheimer's. Hymecromone's mechanism of action is thought to involve reducing hyaluronic acid synthesis, which affects inflammation.
A UC Riverside-led study found that treatment with the medication risperidone leads to increased activity of astrocytes in persons who stutter. This increase in activity may help reduce stuttering by blocking dopamine receptors in the striatum.
A new study found a reduced number of astrocytes in the brains of depressed adults compared to non-depressed individuals. The study suggests that targeting these cells may lead to improved treatment options for depression.