Linking Cognitive Impairment to Neuroinflammation in Multiple Sclerosis using neuroimaging tools

Area of Science:

• Neuroimmunology
• Neuroinflammation
• Cognitive Neuroscience

Background:

• Multiple sclerosis (MS) is a chronic immune disease impacting the central nervous system, leading to neurological disability.
• Cognitive impairment affects over 50% of MS patients, representing a significant and often 'invisible' clinical symptom.
• Neuroinflammation, particularly involving microglia, is implicated in MS pathogenesis and synaptic pruning, potentially affecting neural networks.

Purpose of the Study:

• To review the interplay between cognitive structures, neuroinflammation, and microglia in multiple sclerosis.
• To discuss advanced imaging tools for assessing cognitive impairment and tracking microglia activation in MS.
• To highlight the need for understanding microglia-mediated mechanisms to develop targeted therapies for MS-related cognitive deficits.

Main Methods:

• Literature review focusing on neuroinflammation, microglia, and cognitive impairment in multiple sclerosis.
• Analysis of current and emerging diagnostic imaging techniques (MRI, PET) for assessing brain changes and microglia activity.
• Synthesis of data linking neuroinflammatory processes to cognitive dysfunction in the MS population.

Main Results:

• Microglia play a critical role in neuroinflammation and synaptic pruning, contributing to cognitive impairment in MS.
• Advanced imaging tools offer potential for early detection and monitoring of MS-related cognitive changes and microglia activation.
• A clear link between early imaging alterations and the prediction of cognitive deficits in MS remains to be fully clarified.

Conclusions:

• Understanding the specific roles of microglia in MS-related cognitive impairment is crucial for developing effective treatments.
• Innovative imaging techniques may provide objective measures for assessing cognitive function and guiding therapeutic interventions.
• Targeting microglia-mediated mechanisms holds promise for improving the quality of life for individuals with multiple sclerosis.