nervous system
• ins some areas of cortex in older animals,astrocytes appear dystrophic and are no longer closely associated with plaques, although nearby plaques are associated with activated glial cells
|
• activated microglia accumulate around amyloid beta deposits from ~ 3 months; number of glia increases with age and amyloid accumulation
|
astrocytosis
(
J:68670
)
• activated astrocytes accumulate around amyloid deposits in frontal cortex of 3 month old mice
|
• at <3 months of age, mice show amyloid beta deposits in frontal cortex; with age, deposits spread throughout cortex, and to the hippocampus, thalamus and dentate gyrus
• by 1 year of age, deposits are widely observed, with no apparent increase in total amount of amyloid deposited after this age
• some fibrillar amyloid beta deposits are detected in the frontal cortex of youngest mice, with absence of deposits in more caudal regions; number of fibrillar deposits increases up to 1 year of age, with area covered by fibrillar deposits increasing up to 2 years of age
• at 1 year, area covered by fibrillar deposits is ~50% of total amyloid beta, but comprises majority of total covered area by 2.5 years of age
|
homeostasis/metabolism
amyloidosis
(
J:68670
)
• at <3 months of age, mice show amyloid beta deposits in frontal cortex; with age, deposits spread throughout cortex, and to the hippocampus, thalamus and dentate gyrus
• by 1 year of age, deposits are widely observed, with no apparent increase in total amount of amyloid deposited after this age
• some fibrillar amyloid beta deposits are detected in the frontal cortex of youngest mice, with absence of deposits in more caudal regions; number of fibrillar deposits increases up to 1 year of age, with area covered by fibrillar deposits increasing up to 2 years of age
• at 1 year, area covered by fibrillar deposits is ~50% of total amyloid beta, but comprises majority of total covered area by 2.5 years of age
|
cellular
• ins some areas of cortex in older animals,astrocytes appear dystrophic and are no longer closely associated with plaques, although nearby plaques are associated with activated glial cells
|
• activated microglia accumulate around amyloid beta deposits from ~ 3 months; number of glia increases with age and amyloid accumulation
|
astrocytosis
(
J:68670
)
• activated astrocytes accumulate around amyloid deposits in frontal cortex of 3 month old mice
|