Axonal Injury in Brain Trauma Tied to β-Amyloid Burden

This article originally appeared here.
Share this content:
Axonal Injury in Brain Trauma Tied to β-Amyloid Burden
Axonal Injury in Brain Trauma Tied to β-Amyloid Burden

THURSDAY, Feb. 4, 2016 (HealthDay News) -- Imaging studies suggest that the development of β-amyloid (Aβ) plaques in individuals with traumatic brain injury (TBI) may be related to the presence of axonal damage, according to research published online Feb. 3 in Neurology.

Gregory Scott, M.B.B.S., of the Imperial College London, and colleagues assessed 28 individuals (nine with mild to moderate TBI recruited 11 months to 17 years after injury, nine controls, and 10 with Alzheimer's disease) using 11C-Pittsburgh compound B (11C-PiB)-positron emission tomography and structural and diffusion magnetic resonance imaging studies. Binding potential (BPND) images of 11C-PiB were computed to index Aβ plaque density.

The researchers found that 11C-PiB BPND was increased in the posterior cingulate cortex and cerebellum in individuals with TBI compared with controls. Increased binding in the posterior cingulate cortex was observed with decreasing fractional anisotropy of associated white matter tracts and increased time since injury. Patterns of binding differed in those with TBI versus Alzheimer's disease, with lower levels in neocortical regions and higher levels in the cerebellum.

"Increased Aβ burden was observed in TBI. The distribution overlaps with, but is distinct from, that of Alzheimer's disease," the authors write. "This suggests a mechanistic link between TBI and the development of neuropathologic features of dementia, which may relate to axonal damage produced by the injury."

Several authors disclosed financial ties to the pharmaceutical and biomedical industries.

Abstract
Full Text
Editorial (subscription or payment may be required)

Share this content:

is free, fast, and customized just for you!

Already a member?

Sign In Now »


Sign up for myCME e-newsletters


Drug Lookup

Browse drugs by: BrandGenericDisease


More in Home

Both Statin, Non-Statin Therapies Effective for Lowering LDL

Both Statin, Non-Statin Therapies Effective for Lowering LDL

Dietary changes, other meds, and even surgery can lower cardiovascular risk similarly to statins

Negative Effects Seen With Video Gaming 9 Hours/Week

Negative Effects Seen With Video Gaming 9+ Hours/Week

Benefits seen with one hour a week, but behavioral problems appear to rise at nine hours a week

Improved Adult Lung Function Linked to Childhood Farm Life

Improved Adult Lung Function Linked to Childhood Farm ...

First study to report beneficial effects of growing up on a farm on adult FEV1

is free, fast, and customized just for you!

Already a member?

Sign In Now »