期刊
BIOESSAYS
卷 40, 期 9, 页码 -出版社
WILEY
DOI: 10.1002/bies.201800027
关键词
depression; dysbiosis; gut microbiota; inflammasome; NLRP3; probiotics
We propose the microbiota-inflammasome hypothesis of major depressive disorder (MDD, a mental illness affecting the way a person feels and thinks, characterized by long-lasting feelings of sadness). We hypothesize that pathological shifts in gut microbiota composition (dysbiosis) caused by stress and gut conditions result in the upregulation of pro-inflammatory pathways mediated by the Nod-like receptors family pyrin domain containing 3 (NLRP3) inflammasome (an intracellular platform involved in the activation of inflammatory processes). This upregulation exacerbates depressive symptomatology and further compounds gut dysbiosis. In this review we describe MDD/chronic stress-induced changes in: 1) NLRP3 inflammasome; 2) gut microbiota; and 3) metabolic pathways; and how inflammasome signaling may affect depressive-like behavior and gut microbiota composition. The implication is that novel therapeutic strategies could emerge for MDD and co-morbid conditions. A number of testable predictions surface from this microbiota-gut-inflammasome-brain hypothesis of MDD, using approaches that modulate gut microbiota composition via inflammasome modulation, fecal microbiota transplantation, psychobiotics supplementation, or dietary change.
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