Gut-Brain Axis: Microbiota’s Role in Neuroimmunological Disorders

The gut-brain axis represents a dynamic, bidirectional communication network connecting the gastrointestinal (GI) tract to the central nervous system (CNS), with the microbiota playing a pivotal role in modulating neurological and immunological processes. Recent advances have uncovered intricate pathways by which the intestinal microbiome can influence CNS homeostasis and contribute to the development or progression of various neuroimmunological and neurodegenerative disorders. While compelling correlations have been established between gut dysbiosis and diseases such as Alzheimer’s disease, Parkinson’s disease, multiple sclerosis, and neuropathic pain, the precise causal mechanisms remain only partially understood. Current research points to gut microbial metabolites, immune system cross-talk, and systemic inflammation as critical mediators driving CNS inflammation and autoimmune responses. However, gaps persist regarding both the direct pathways and the therapeutic potential of modulating the gut microbiota to alter disease trajectories in neuroimmunological conditions.

This Research Topic aims to elucidate the multifaceted influence of gut microbiota on neuroimmune function, CNS inflammation, and the etiology of complex neurological diseases. By integrating insights from molecular biology, immunology, neuroscience, and clinical research, the objective is to clarify mechanisms through which the gut microbiome communicates with the CNS and modulates neuroinflammation, with an emphasis on identifying novel diagnostic and therapeutic strategies. Key questions include: How does gut dysbiosis trigger or exacerbate neuroinflammatory responses? What are the microbiota-mediated pathways implicated in neurodegeneration and neuropathic pain? Can targeted manipulation of the microbiota offer protective or restorative benefits in CNS autoimmune disorders? This Research Topic further seeks to consolidate emerging evidence and propose new models for translational research in this rapidly evolving area.

To gather further insights into the complex relationship between the gut microbiota and neuroimmunological disorders, this Research Topic welcomes studies ranging from basic science and animal models to clinical trials and comprehensive reviews. We invite articles addressing, but not limited to, the following themes:

• Gut microbiota composition and CNS inflammation

• Microbiota alterations in Alzheimer’s and Parkinson’s disease

• Gut microbial dynamics in multiple sclerosis and autoimmune neuroinflammation

• Mechanistic studies on microbiota-mediated neuroinflammatory cascades

• Gut-brain axis in neuropathic pain syndromes

• Immune system cross-talk between the GI tract and CNS

• Translational and therapeutic strategies targeting the microbiota for neuroimmunological and neurodegenerative diseases