Salk Institute researchers have developed a new way to derive astrocytes
from stem cells, opening up broad avenues for research into diseases with inflammatory features.
39) These findings suggest that chromatin accessibility around the STAT3-binding site in the Gfap promoter is altered during development and regulates the proper astrocyte
differentiation potential of NSCs.
Much of the astrocyte
activity was on the largest synapses, the ones Bellesi compared to old pieces of furniture that would need more attention and cleaning.
Additionally, some of the micro-anatomical characteristics and details of overlap between astrocyte
territories are difficult to visualize under a traditional microscope (Bushong et al.
Recent studies have supported the hypothesis that astrocytes
have a beneficial role contributing to amyloid-beta clearance, but also that excess amyloid-beta can lead to oxidative stress and damage, and as a consequence to reduced astrocyte
functionality, leading to reactive changes and decreased neuronal support, and thereby contributing to neurodegeneration.
The number of astrocytes
reached a peak when the amyloid plaque started to accumulate in the brain, and neuronal function, as gauged by glucose metabolism, began to decline roughly seven years before the expected disease symptoms.
However, the astrocyte
response to oxidative stress also induces morphologic and phenotypic changes that can paradoxically exacerbate injury, a process termed reactive gliosis or astrogliosis [24, 27].
Glia come in three varieties: microglia, astrocytes
Currently, studies have revealed that astrocyte
, supportive cell of neuronal, play an important role in the survival of neuronal cells.
There was an increase in ROS production in astrocyte
cells after exposure to 0.
Lithium increased bcl-2 mRNA levels in the rat primary astrocyte
, neuron, and mixed neuron-astrocyte
cultures by factors of 1.
It is likely that at two weeks post-ischemia astrocyte
proliferation is not yet present, which is characteristic of a more chronic course.
Recent studies have also determined that astrocyte
dysregulation plays a central role in the pathogenesis of several disease processes, including brain metastasis.
Researchers from Ottawa University in Canada narrowed the effect down to a particular type of brain cell called an astrocyte
The topics include adhesion molecules and their function in astrocyte
polarity, what goes wrong with astrocyte
-neuron communication in pathology, the blood-brain barrier and the neural vascular unit, astrocytes
in epilepsy, and the role of glial pathology in autism.