Date of Award
Spring 6-15-2024
Document Type
Undergraduate Thesis
Degree Name
B.S.
Organizational Unit
Biological Sciences, College of Natural Science and Mathematics
First Advisor
Daniel Paredes
Keywords
Colocalization, Polyamines, Alzheimer's Disease (AD), Down Syndrome (DS)
Abstract
Polyamines, and their rate-limiting enzyme ornithine decarboxylase (ODC), are crucial for many functions in the central nervous system but levels decrease with age. In neurodegenerative diseases, like Alzheimer’s Disease (AD), polyamine levels begin to increase again. Yet, there are still many unanswered questions surrounding polyamine’s possible role in AD, especially in those with Down Syndrome (DS), who also have an extra copy of the amyloid precursor protein (APP) and tend to get AD far earlier than the general population. We aim to investigate if there is colocalization between amyloid plaques and Ornithine Decarboxylase (ODC) in patients with AD and AD/DS, see if there is a relationship between polyamines and amyloid plaques, and if this might be a contributor factor underlying AD pathogenesis. This will be done through immunofluorescence staining of paraffin-embedded human hippocampal tissue for ODC, β-amyloid, and collagen as a molecular marker for vascularity. The results indicate limited to moderate colocalization of ODC and amyloid plaques that tend to be located near vascularity, and that this colocalization is present, especially in those with DS and AD. This suggests a relationship between polyamine metabolism and AD pathology supporting that this may be a factor contributing to AD pathogenesis.
Copyright Date
6-5-2024
Copyright Statement / License for Reuse
All Rights Reserved.
Publication Statement
Copyright is held by the author. User is responsible for all copyright compliance.
Rights Holder
Julia Gielczynski
Provenance
Received from author
File Format
application/pdf
Language
English (eng)
Extent
21 pgs
File Size
404 KB
Recommended Citation
Gielczynski, Julia S., "Colocalization of ODC and Amyloid Plaques in Patients with Alzheimer’s Disease and Down Syndrome" (2024). Undergraduate Theses, Capstones, and Recitals. 29.
https://digitalcommons.du.edu/undergraduate_theses/29