主题词：Neuroinflammation and Neurodegeneration Mechanisms; Tryptophan and brain disorders; Multiple Sclerosis Research Studies; Alzheimer's disease research and treatments; Neurogenesis and neuroplasticity mechanisms; Immune Response and Inflammation; Pain Mechanisms and Treatments; Nerve injury and regeneration; Inflammasome and immune disorders; Parkinson's Disease Mechanisms and Treatments; Immune cells in cancer; Barrier Structure and Function Studies; Traumatic Brain Injury and Neurovascular Disturbances; Intracerebral and Subarachnoid Hemorrhage Research; Neuroscience and Neuropharmacology Research; S100 Proteins and Annexins; Spinal Cord Injury Research; Neurological Disease Mechanisms and Treatments; Peripheral Neuropathies and Disorders; Neonatal and fetal brain pathology; Stress Responses and Cortisol; Amyotrophic Lateral Sclerosis Research; Gut microbiota and health; Retinal Diseases and Treatments; Vagus Nerve Stimulation Research