Interleukin-17 in Chronic Inflammatory Neurological Diseases

Area of Science:

• Immunology
• Neuroinflammation
• Autoimmune Diseases

Background:

• Interleukin-17 (IL-17), a cytokine from T helper 17 (Th17) cells, is implicated in chronic inflammatory and autoimmune diseases.
• IL-17 blockade has demonstrated therapeutic benefits in various inflammatory conditions.
• Th17 cell differentiation and maintenance are regulated by cytokines influenced by environmental factors.

Purpose of the Study:

• To review the role of IL-17 in the pathogenesis of chronic neuroinflammatory conditions.
• To summarize the influence of environmental stimuli on Th17 differentiation.
• To highlight the impact of viral infections on pathogenic T helper cells in experimental autoimmune encephalomyelitis (EAE).

Main Methods:

• Literature review of studies investigating IL-17 in neuroinflammation and autoimmune diseases.
• Analysis of research on environmental factors affecting Th17 cell differentiation.
• Examination of data on viral infection's role in pathogenic T helper cell regulation in EAE.

Main Results:

• IL-17 plays a critical role in the pathogenesis of multiple sclerosis (MS), Alzheimer's disease, and ischemic brain injury.
• Environmental factors, including viral infections, significantly influence Th17 differentiation and pathogenic T helper cell activity.
• Blockade of IL-17 derived from autoreactive T cells offers a promising therapeutic strategy.

Conclusions:

• IL-17 is a key mediator in chronic neuroinflammatory and autoimmune diseases.
• Environmental cues, particularly viral infections, modulate Th17 responses relevant to disease pathogenesis.
• Targeting IL-17 represents a viable therapeutic avenue for managing these debilitating conditions.