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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Cereb+Blood+Flow+Metab
2015 ; 35
(6
): 1005-14
Nephropedia Template TP
gab.com Text
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Gliovascular disruption and cognitive deficits in a mouse model with features of
small vessel disease
#MMPMID25669904
Holland PR
; Searcy JL
; Salvadores N
; Scullion G
; Chen G
; Lawson G
; Scott F
; Bastin ME
; Ihara M
; Kalaria R
; Wood ER
; Smith C
; Wardlaw JM
; Horsburgh K
J Cereb Blood Flow Metab
2015[Jun]; 35
(6
): 1005-14
PMID25669904
show ga
Cerebral small vessel disease (SVD) is a major cause of age-related cognitive
impairment and dementia. The pathophysiology of SVD is not well understood and is
hampered by a limited range of relevant animal models. Here, we describe
gliovascular alterations and cognitive deficits in a mouse model of sustained
cerebral hypoperfusion with features of SVD (microinfarcts, hemorrhage, white
matter disruption) induced by bilateral common carotid stenosis. Multiple
features of SVD were determined on T2-weighted and diffusion-tensor magnetic
resonance imaging scans and confirmed by pathologic assessment. These features,
which were absent in sham controls, included multiple T2-hyperintense infarcts
and T2-hypointense hemosiderin-like regions in subcortical nuclei plus increased
cerebral atrophy compared with controls. Fractional anisotropy was also
significantly reduced in several white matter structures including the corpus
callosum. Investigation of gliovascular changes revealed a marked increase in
microvessel diameter, vascular wall disruption, fibrinoid necrosis, hemorrhage,
and blood-brain barrier alterations. Widespread reactive gliosis, including
displacement of the astrocytic water channel, aquaporin 4, was observed.
Hypoperfused mice also demonstrated deficits in spatial working and reference
memory tasks. Overall, gliovascular disruption is a prominent feature of this
mouse, which could provide a useful model for early-phase testing of potential
SVD treatment strategies.
|Animals
[MESH]
|Atrophy/pathology
[MESH]
|Blood-Brain Barrier/pathology
[MESH]
|Brain/*pathology
[MESH]
|Cerebral Small Vessel Diseases/complications/*pathology
[MESH]