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Several neurodegenerative diseases appear to be linked to epigenetic changes in gene
expression. Below are images of immunoreactivity for 5-methylcytosine from the entorhinal cortex
from a non-diseased brain (ND, Panel B1) and a brain from an Alzheimers Disease (AD, Panel
B2) patient. Panels D1 and D2 shows immunoreactivity for 5-methylcytosine in ND and AD
cerebellar brain slices, respectively.
The entorhinal cortex is associated with consolidating memories, while this cerebellar region is
associated with control of motor function.
A. Does this data show DNA methylation or histone methylation? Briefly explain?
B. Why did the researchers show methylation patterns in the cerebellum of ND and AD brains?
C. Based on this methylation pattern, would you expect increased or decreased gene expression
in the AD patient?
B1 (ND) B2 (AD) D1 (ND) D2 (AD) 20m

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Several neurodegenerative diseases appear to be linked to ep.pdf

  • 1. Several neurodegenerative diseases appear to be linked to epigenetic changes in gene expression. Below are images of immunoreactivity for 5-methylcytosine from the entorhinal cortex from a non-diseased brain (ND, Panel B1) and a brain from an Alzheimers Disease (AD, Panel B2) patient. Panels D1 and D2 shows immunoreactivity for 5-methylcytosine in ND and AD cerebellar brain slices, respectively. The entorhinal cortex is associated with consolidating memories, while this cerebellar region is associated with control of motor function. A. Does this data show DNA methylation or histone methylation? Briefly explain? B. Why did the researchers show methylation patterns in the cerebellum of ND and AD brains? C. Based on this methylation pattern, would you expect increased or decreased gene expression in the AD patient? B1 (ND) B2 (AD) D1 (ND) D2 (AD) 20m