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Related Concept Videos

Brainstem01:19

Brainstem

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The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
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Brainstem atrophy in Gulf War Illness.

Yu Zhang1, Timothy Avery2, Andrei A Vakhtin2

  • 1War Related Illness and Injury Study Center (WRIISC), Veterans Affairs Palo Alto Health Care System, USA.

Neurotoxicology
|February 22, 2020
PubMed
Summary
This summary is machine-generated.

Gulf War Illness (GWI) is linked to brainstem atrophy in veterans. This brainstem volume reduction correlates with increased fatigue and depression, suggesting a potential mechanism for GWI symptoms.

Keywords:
Brain volumetric analysisBrainstemChronic multi-symptom illnessFatigueGulf WarMagnetic resonance imaging

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Area of Science:

  • Neuroimaging
  • Veterans' Health
  • Brain Anatomy

Background:

  • Gulf War Illness (GWI) affects approximately 30% of veterans from the 1990-91 Persian Gulf War.
  • GWI presents with diverse symptoms including chronic pain, fatigue, and neurological issues.
  • Previous neuroimaging studies on GWI were limited by small sample sizes and diagnostic inconsistencies.

Purpose of the Study:

  • To investigate the association between GWI and regional brain volumes in a large cohort of US veterans.
  • To quantify the relationship between identified brain volume changes and specific GWI symptoms.

Main Methods:

  • Structural MRI scans from 111 GWI veterans and 59 healthy controls were analyzed.
  • Regional brain volumes were segmented and parcellated using FreeSurfer software.
  • Associations between GWI, regional volumes, and symptom severity were assessed.

Main Results:

  • Significant subcortical atrophy was observed in GWI veterans compared to controls, particularly in the brainstem, ventral diencephalon, and thalamus.
  • No significant cortical volume differences were found between groups.
  • Smaller brainstem volumes in GWI veterans correlated with higher levels of fatigue and depression.

Conclusions:

  • Brainstem volume may be selectively impacted in Gulf War Illness.
  • Brainstem atrophy could be a mediating factor for GWI-related fatigue and depression.
  • Future GWI research should prioritize the brainstem in pathological investigations.