Basic Science and Pathogenesis

Area of Science:

• Neuroscience
• Developmental Biology
• Gerontology

Background:

• Cerebral Palsy (CP) is a common childhood motor disability with associated cardiovascular risks.
• Adults with CP face higher risks for Alzheimer's disease (AD) and related dementias.
• The link between early life insults (CP) and later AD risk remains unclear.

Purpose of the Study:

• To investigate the combined effects of prenatal hypoxia-ischemia (HI) and high-cholesterol diet on cognitive function and AD pathology.
• To model the potential increased risk of AD in individuals with a history of CP.

Main Methods:

• Combined a high-cholesterol-fed rabbit model with a prenatal hypoxia-ischemia (HI) model simulating CP.
• Assessed cognitive functions including trace eyeblink conditioning and object recognition memory.
• Analyzed protein expression (APP, GFAP) in the frontal cortex.

Main Results:

• High cholesterol correlated with learning deficits in trace eyeblink conditioning.
• HI rabbits showed impaired novel object recognition, preferring familiar objects.
• High cholesterol exacerbated HI-induced increases in APP expression in the frontal cortex.

Conclusions:

• Early life brain injury, such as HI, may contribute to increased susceptibility to AD.
• Further research is needed to fully elucidate the relationship between prenatal insults and AD risk.