We therefore anticipated some improvement
of gliosis in Grn − / − mice.
Histological assessment demonstrated
reactive gliosis of both astro - and microglia in the spinal cord of end - stage disease SOD1 and PFN1 mice.
Focal gliosis occurred occasionally in the brain, with lymphocyte infiltration under cranial arachnoid (Fig. 3D).
(2008) Regulation of
Gliosis in the DBA / 2J Mouse Model of Glaucoma by NF - kB and STAT3 Pathways (Investigative Ophthalmology & Visual Science, 49: ARVO E-Abstract 5489).
Here one of our major hypotheses is
whether gliosis is an aberrant regenerative response or an independent entity.
(2009) Tempering
Gliosis by Inhibition of the NFkB Pathway in an Acute Model of Glaucoma (Investigative Ophthalmology & Visual Science, 50: ARVO E-Abstract 2781).
Müller glia are activated in almost all types of retinal disease, also
called gliosis.
Grn − / −, but not Grn + / − mice, develop
progressive gliosis, inflammation, and lipofuscinosis in several brain regions that first becomes detectable around 6 — 7 months of age and is more strongly elevated by 12 months (Ahmed et al., 2010; Yin et al., 2010; Wils et al., 2012; Filiano et al., 2013; Götzl et al., 2014).
We therefore included Grn − / − mice in the study to test the secondary hypothesis that exercise could
improve gliosis independent of any effect on progranulin expression.
Grn − / − mice were included in the study to test for progranulin - independent benefits of exercise
on gliosis.
Although it was not the primary endpoint of our analyses, we took the opportunity to assess whether exercise, which is known to have anti-inflammatory effects, might
reduce gliosis and inflammation in Grn − / − mice, which would be independent of an effect on progranulin levels.
(2010)
Decreasing Gliosis by Inhibition of the Stat3 Pathway in a Microbead Mouse Model of Glaucoma (Investigative Ophthalmology & Visual Science, 51: ARVO E-Abstract 3192).
In essence, most pathological conditions in the mammalian retina lead to changes in Müller glia — often called
reactive gliosis, which might be analogous to the response of astrocytes upon injury of other brain regions.
Here our major question is
whether gliosis is an aberrant regenerative response or an independent entity.
The role
of gliosis is controversial since it has been shown to provide neuroprotection and repair as well as being harmful by forming a glial scar (particularly the proliferative form)-- or possibly both.
Gliosis is a non-stereotypical response of glia associated with a pathological state that serves as an umbrella term describing various phenotypic changes.
Since the TMEM106B genetic variant on brain aging was also apparent in patients with Alzheimer's disease, Rhinn explained that «one interpretation is that TMEM106B is a critical element of a resilience network in the frontal cortex that limits the extent of neuronal loss and
gliosis.»
While humans also have c - Fos, in humans the protein functions in concert with other proteins, in the JUN family, that cause cells to undergo reactive
gliosis, which leads to scar formation.
Mock - infected control (A); Severe hemorrhage and regression of ovarian follicles (B); Spleens from mock - infected control (left) and enlarged spleens from the infected ducks (C); HE - stained ovary section showing hemorrhage and follicle rupture with red stained bodies (D); HE - stained brain section revealing lymphocytes and mononuclear cell infiltration under cranial arachnoid (E) and focal
gliosis (arrow)(F).
In addition, the hippocampus of T2DM - AD - Vehicle mice showed increased proinflammatory cytokines IL - 1β and TNF - α and
gliosis, and rivastigmine treatment blocked these inflammatory reactions.
Recent studies have suggested that cholinergic modulation is involved in neuroinflammatory cellular reactions including neurogenesis and
gliosis, and in memory improvement.
For measures of
gliosis in Grn − / − mice, we also reported the power to detect normalization of gliosis.
Keywords: Acetylcholinesterase, Alzheimer's disease,
gliosis, high - fat diet, inflammation, memory, neurogenesis, rivastigmine, type 2 diabetes mellitus
Thus, cholinergic modulation by rivastigmine treatment led to enhanced neurogenesis and the suppression of
gliosis, which together ameliorated the memory decline in T2DM - AD model mice.
Dr. Horner's experience in spinal cord injury and glial cells has been applied to glaucoma leading to new findings on the role of
gliosis and oxidative stress in glaucoma.
Results: Both HFDs resulted in obesity and hyperleptinemia; however, the saturated HFD uniquely triggered anxiety - like behavior, behavioral despair, hyperinsulinemia, glucose intolerance, peripheral inflammation, and multiple pro-inflammatory signs in the NAc, including reactive
gliosis, increased expression of cytokines, antigen - presenting markers and NFкB transcriptional activity.