Fibromyalgia interacts with age to change the brain

Area of Science:

• Neuroscience
• Medical Imaging
• Pain Research

Background:

• Brain plasticity, including gray matter changes, is known in chronic pain but directionality factors are unclear.
• Fibromyalgia (FM) is a chronic pain condition with complex neurological underpinnings.
• Age-related differences in brain structure and function may influence FM pathology.

Purpose of the Study:

• To investigate if fibromyalgia interacts with age to create distinct gray matter patterns.
• To compare gray matter changes in younger and older female fibromyalgia patients versus age-matched controls.
• To explore the relationship between pain duration, experimental pain sensitivity, white matter integrity, and functional connectivity.

Main Methods:

• Voxel-based morphometry and cortical thickness analysis of MRI scans.
• Diffusion-tensor imaging (DTI) for white matter integrity.
• Resting-state functional MRI (fMRI) for functional connectivity.
• Comparison of structural brain differences with experimental pain sensitivity.

Main Results:

• Older FM patients showed decreased gray matter and compromised white matter integrity.
• Younger FM patients exhibited gray matter increases in the basal ganglia and insula, independent of pain duration.
• Structural brain alterations correlated with pain sensitivity, which was higher in older patients and normal in younger patients.
• Insular gray matter increases in younger patients correlated with lower pain sensitivity, suggesting endogenous pain modulation.

Conclusions:

• Fibromyalgia-associated brain structural changes differ significantly between younger and older patients.
• Brain structure and function appear adaptive in younger patients and maladaptive in older patients with fibromyalgia.
• These age-dependent neuroplasticity patterns may have significant implications for fibromyalgia treatment strategies.