Changes in Hippocampal Plasticity and HPA Axis Function Following Postnatal Exposure to Di(2-Ethylhexyl) Phthalate in Rats

Phthalates are known to affect the development of regions within the hippocampus, however the mechanisms of these toxic effects are not well known. Stress is also known to have detrimental effects on the hippocampus. This study aimed to determine whether phthalates affect hippocampal development, and whether there is an associated activation of HPA axis. DEHP was injected in juvenile rats daily from PND 16 – PND 22. Brain tissue samples were analyzed by immunohistochemistry to quantify developing neurons. The Golgi – Cox Impregnation method was used for detailed morphological analyses. Blood samples were analyzed for corticosterone levels. The CA3 of males showed a decrease in the size of the area of basal dendrites at the middle and highest dose of DEHP treatment, while the DG of females showed a decrease in number of spines at the highest dose, and a decrease in the dendrite length at only the lowest dose.

Name thesis:degree_name

Master of Science (M.Sc.)

Level thesis:degree_level

Master's

Discipline thesis:degree_discipline

Neuroscience

Grantor dc:publisher

Carleton University

Year dc:date.issued

2015

Author dc:creator

• Weir, Arielle

Statement dc:rights

• Copyright © 2015 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.

Language dc:language.iso

en

DOI

10.22215/etd/2015-11005

OAI identifier oai:identifier

oai:carleton.scholaris.ca:20.500.14718/39206