Alterations in Cardiovascular Parameters in 5xFAD Murine Model

Area of Science:

• Neuroscience
• Cardiovascular Research
• Biomedical Engineering

Background:

• Alzheimer's Disease (AD) is a growing global health concern impacting memory and cognition.
• AD is linked to cardiovascular risk factors, necessitating research into its systemic effects.
• The 5xFAD mouse model is used to study AD-related changes.

Purpose of the Study:

• To measure hemodynamic parameters in 5xFAD mice to assess cardiovascular and cerebrovascular function.
• To investigate arterial stiffness using cardiovascular pulse wave velocity (PWV) and cerebrovascular PWV.
• To determine if early-stage AD pathology in mice correlates with measurable cardiovascular changes.

Main Methods:

• Hemodynamic parameters were measured in 5xFAD mice and littermate controls.
• Cardiovascular pulse wave velocity (PWV) was assessed as a marker of arterial stiffness.
• Cerebrovascular PWV was measured using a novel technique to assess cerebral arterial stiffness.

Main Results:

• 5xFAD mice showed significant differences in ejection time, pulse pressure, and Tei index compared to controls.
• Many other cardiovascular and cerebrovascular parameters, including PWV, did not differ significantly.
• No significant cardiovascular changes were observed despite early amyloid plaque deposition in young 5xFAD mice.

Conclusions:

• Early-stage AD in 5xFAD mice does not profoundly affect most measured cardiovascular and cerebrovascular parameters.
• Further research at later ages is recommended to explore more significant parametric changes associated with advanced AD.
• Understanding the interplay between AD and cardiovascular health requires age-specific investigations.