Multiple sclerosis animal models: a clinical and histopathological perspective

Area of Science:

• Neuroscience
• Immunology
• Pathology

Background:

• Multiple sclerosis (MS) is recognized as both an inflammatory and neurodegenerative disorder.
• Existing therapies effectively manage relapsing-remitting MS but fail to halt progressive neurodegeneration.
• There is a critical need for effective therapeutic strategies targeting the neurodegenerative aspects of MS.

Purpose of the Study:

• To evaluate the utility of animal models in replicating the pathology of progressive multiple sclerosis.
• To compare the suitability of different models for studying specific MS pathological hallmarks.
• To identify which animal models best represent the neurodegenerative and demyelinating aspects of MS.

Main Methods:

• Review of existing literature on animal models of multiple sclerosis.
• Analysis of experimental autoimmune encephalomyelitis (EAE) models, including relapsing-remitting and secondary progressive EAE.
• Evaluation of the cuprizone model for studying demyelination without T-cell involvement.

Main Results:

• Acute and relapsing-remitting EAE models effectively mimic the relapsing-remitting phases of MS.
• The secondary progressive EAE model in Biozzi ABH mice better represents the progressive phase of MS, which is often resistant to immune therapies.
• The cuprizone model is valuable for investigating demyelination in the absence of T-cell mediated inflammation.

Conclusions:

• Animal models are crucial for understanding the complex pathology of multiple sclerosis.
• Different models offer unique advantages for studying specific aspects of MS, such as relapsing-remitting inflammation or progressive neurodegeneration and demyelination.
• Further research utilizing these models is essential for developing therapies to combat progressive neurodegeneration in MS.