Age-Dependent Changes in Amyloid-Beta Transporter Expression
Author Information
Author(s): Pascale Crissey L, Miller Miles C, Chiu Catherine, Boylan Matthew, Caralopoulos Ilias N, Gonzalez Liliana, Johanson Conrad E, Silverberg Gerald D
Primary Institution: Warren Alpert Medical School Brown University
Hypothesis
The expression of amyloid-beta transporters at the blood-cerebrospinal fluid barrier changes with age.
Conclusion
Age-dependent alterations in the choroid plexus amyloid-beta transporters are associated with a decrease in amyloid-beta accumulation.
Supporting Evidence
- LRP-1 expression increased significantly between 9 and 30 months.
- LRP-2 expression decreased continuously from 3 to 36 months.
- P-glycoprotein expression increased significantly with age.
- Aβ42 concentration in the choroid plexus decreased with age.
Takeaway
As rats get older, the way their bodies handle a substance called amyloid-beta changes, which might help keep their brains healthier.
Methodology
The study used real-time RT-PCR and immunohistochemistry to measure transporter expression in rat choroid plexus at various ages.
Potential Biases
Potential biases may arise from the specific age groups selected and the methods of measurement used.
Limitations
The study was conducted on a specific rat strain, which may limit the generalizability of the findings to other species.
Participant Demographics
Male Brown-Norway/Fischer rats aged 3 to 36 months.
Statistical Information
P-Value
0.047
Confidence Interval
(0.0122, 1.1828)
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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