Neurodegenerative diseases, a group of highly prevalent central nervous system disorders, are closely linked to gut microbiota dysbiosis and impaired gut-brain axis function. The emerging gut-brain axis theory offers a novel perspective to explain how microbes exert remote, cross-organ regulation over the central nervous system. Recent studies have indicated that butyrate-producing bacteria, a core functional component of the gut microbiota, exhibit dynamic changes temporally and spatially correlated with the onset and progression of these diseases. These bacteria are thought to modulate the central nervous system microenvironment and disease pathology via the gut-brain axis. This article systematically reviews the bidirectional signaling mechanisms between the gut microbiota and the brain, analyzing the complex, multidimensional relationship between butyrate-producing bacteria and neurodegenerative diseases. This analysis encompasses population heterogeneity in patients with diverse clinical features and the dynamic evolution of these bacterial communities across different disease stages. We summarize the key mechanisms by which butyrate-producing bacteria regulate disease progression, including barrier protection, immunomodulation, metabolic regulation, and epigenetic modification. Furthermore, we explore their clinical potential as predictive biomarkers and therapeutic targets. We propose that future research should prioritize the development of targeted intervention strategies for gut-derived butyrate-producing bacteria. This review aims to provide a theoretical foundation and novel insights to advance both the fundamental investigation and clinical translation of these bacteria in the context of neurodegenerative diseases.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |