Is Gulf War Illness a prolonged early phase tauopathy?

Area of Science:

• Neuroscience
• Environmental Health
• Veterans Affairs

Background:

• Gulf War Illness (GWI) is associated with cognitive decrements, particularly memory issues.
• These cognitive deficits do not meet dementia criteria but raise concerns for future progression.

Purpose of the Study:

• To investigate the potential role of elevated tau levels in the brain as a cause of cognitive problems in GWI.
• To explore tau autoantibodies in GWI veterans' blood as a biomarker.
• To identify urgent treatment and prevention strategies for GWI cognitive impairment.

Main Methods:

• Utilized human brain organoids and a rat model to study GWI.
• Analyzed blood samples for tau autoantibodies in GWI veterans.

Main Results:

• Recent studies suggest elevated tau in the brain may underlie cognitive issues in GWI.
• High levels of tau autoantibodies were found in the blood of GWI veterans.

Conclusions:

• Elevated tau may be a key factor in GWI-related cognitive impairment.
• GWI cognitive status might represent an early stage of tauopathy, common in neurodegenerative diseases.
• Urgent development of treatments and preventive strategies is needed for GWI veterans.