The Role of Stress as a Risk Factor for Progressive Supranuclear Palsy.

Area of Science:

• Neurology
• Neuroscience
• Psychiatry

Background:

• Progressive supranuclear palsy (PSP) is a tauopathy, similar to Alzheimer's disease (AD).
• The underlying causes of PSP are not well understood, and the role of stress has not been investigated.
• Emerging research links stress to an increased risk of developing AD.

Purpose of the Study:

• To investigate the potential association between progressive supranuclear palsy (PSP) and exposure to life stressors.
• To examine if self-reported life stressors act as a risk factor in the development of PSP.

Main Methods:

• A life stressor questionnaire was administered to 76 patients diagnosed with PSP and 68 age-matched controls.
• Stress was quantified by the total number of events, number of life-changing events, and self-rated severity of events.
• Conditional odds ratios (OR) were calculated, defining high exposure as the highest quartile of each stress measure.

Main Results:

• No significant differences were found in the total number of events or life-changing events between PSP cases and controls.
• However, 24.4% of PSP cases reported high exposure to high-severity events, compared to 9.1% of controls.
• This resulted in an odds ratio of 3.2 (p=0.04) for high exposure to high-severity events in PSP cases.

Conclusions:

• Individuals who developed PSP showed over a threefold increased likelihood of high exposure to severe stress events compared to controls.
• These findings suggest a potential link between significant life stressors and the development of progressive supranuclear palsy (PSP).
• Further research is warranted to elucidate the precise role of stress in PSP pathogenesis.