Astrocyte News and Research

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Manipulating mitochondria to improve the efficiency of neuronal reprogramming

The replacement of lost neurons is a holy grail for neuroscience. A new promising approach is the conversion of glial cells into new neurons. Improving the efficiency of this conversion or reprogramming after brain injury is an important step towards developing reliable regenerative medicine therapies.

17 Nov 2020

Neuroscientists identify astrocytes as master 'conductors' of the brain

In the orchestra of the brain, the firing of each neuron is controlled by two notes--excitatory and inhibitory-- that come from two distinct forms of a cellular structure called synapses.

12 Nov 2020

Study may lead to new therapies that accelerate removal of cellular debris from the brain

Microglia -- the brain's immune cells -- play a primary role in removing cellular debris from the brain. According to a recent study by a Nagoya University-led research team in Japan, another kind of brain cell, called astrocyte, is also involved in removing debris as a backup to microglia.

11 Nov 2020

Researchers generate a transcriptomic map of the COVID brain

COVID-19 is known to be associated with multiple changes in gene expression, but many of these are also seen in chronic brain conditions as well as in some abnormal mental conditions. A recent study published on the preprint server bioRxiv in October 2020 uncovers the molecular basis of this association.

26 Oct 2020

Tracing lineage to demonstrate direct astrocyte-to-neuron conversion in mouse brain

Regeneration of functional new neurons to repair injured human brain is a long-term unsolved problem up till today.

16 Oct 2020

Cocaine use in mice leads to the formation of synapses by astrocytes

Drugs of abuse, like cocaine, are so addictive due in part to their cellular interaction, creating strong cellular memories in the brain that promote compulsive behaviors.

15 Oct 2020

SARS-CoV-2 can infect brain cells and damage neurons

Researchers have found that the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can infect the brain cells, mainly the astrocytes, and negatively affects cognition and neuronal cells.

15 Oct 2020

New clinical report on brain changes in deceased COVID-19 patients

German researchers published a report on a series of cases on post mortem findings of COVID-19 patients who succumbed to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection along with neurological complications. Their study titled “Neuropathology of patients with COVID-19 in Germany: a post-mortem case series” is published in the latest issue of The Lancet Neurology.

6 Oct 2020

How many "listeners" a nerve cell has is strictly regulated, shows study

How many "listeners" a nerve cell has in the brain is strictly regulated. This is shown by an international study led by the University College London and the universities of Bonn, Bordeaux and Milton Keynes (England).

26 Sep 2020

Study reveals how loss of protein arginine methyltransferase affects proper brain development

Normal brain development requires a precise interplay between neuronal and non-neuronal (also called glial) cells.

24 Sep 2020

Astrocytes are essential for blood-brain barrier health, shows study

Hard skulls help protect our brains from physical injuries.In addition to a tough outer shell, brains have internal defenses, including a powerful shield called the blood-brain barrier that defends brain cells from substances in the bloodstream that are toxic and dangerous to nerve cells. If the blood-brain barrier is breached, then health problems arise.

21 Sep 2020

Cannabinoids cause changes in the brain that leads to deficiencies in social interaction

The nervous system comprises neurons and glial cells (glia signifies "glue"). Astrocytes are the most abundant among the glial cells.

19 Sep 2020

Study reveals damaging role of immune system in severe brain infection

A new study has detailed the damaging role played by the immune system in a severe brain condition most commonly caused by the cold sore virus.

15 Sep 2020

New study can advance scientific understanding of the function of astrocytes

New research from Oregon Health & Science University for the first time documents the presence of astrocytes in zebrafish, a milestone that will open new avenues of research into a star-shaped type of glial cell in the brain that is critical for nearly every aspect of brain assembly and function.

9 Sep 2020

Study links brain astrocyte dysfunction to Parkinson’s disease pathology

A new study using induced pluripotent stem cell technology links astrocyte dysfunction to Parkinson’s disease pathology.

8 Sep 2020

Study identifies important regulator of neuron function and survival

Scientists studying neuronal energy metabolism found evidence that the loss of an important energy regulator called AMPK in neural stem cells or glial cells called astrocytes causes neuronal death in laboratory rodents.

1 Sep 2020

Brain estrogen critical for astrocyte activation and neuroprotection

When the brain isn't getting enough oxygen, estrogen produced by neurons in both males and females hyperactivates another brain cell type called astrocytes to step up their usual support and protect brain function.

1 Sep 2020

Brain protein associated with seizures and abnormal social behaviors

A team led by a biomedical scientist at the University of California, Riverside has found a new mechanism responsible for the abnormal development of neuronal connections in the mouse brain that leads to seizures and abnormal social behaviors.

31 Aug 2020

Research unlocks key mechanism in the communication between brain cells during stroke

Research led by Nicolas Bazan, MD, PhD, Boyd Professor and Director of the Neuroscience Center of Excellence at LSU Health New Orleans School of Medicine, and Ludmila Belayev, MD, LSU Health New Orleans Professor of Neuroscience, Neurology and Neurosurgery, has unlocked a key fundamental mechanism in the communication between brain cells when confronted with stroke.

6 Aug 2020

Research suggests a possible new approach to treating neurodegenerative diseases

Researchers at Vanderbilt University Medical Center have shown for the first time that when one optic nerve in the eye is damaged, as in glaucoma, the opposite optic nerve comes to the rescue by sharing its metabolic energy.

21 Jul 2020