Does SCFA impact immune and inflammatory pathways? Show thinking Yes, absolutely! Short-Chain Fatty Acids (SCFAs) are major players in controlling immune and inflammatory pathways, both within the gut and systemically. This is one of the most significant and exciting areas of research on SCFAs. Here's how they exert their control: Interaction with G-Protein Coupled Receptors (GPCRs): GPR41 and GPR43: These are the most well-studied SCFA receptors, found on various cell types throughout the body, including immune cells (e.g., neutrophils, macrophages, T cells), gut epithelial cells, and adipocytes. When SCFAs (particularly acetate, propionate, and butyrate) bind to these receptors, they trigger intracellular signaling pathways that can influence immune cell function, cytokine production, and inflammatory responses. Histone Deacetylase (HDAC) Inhibition: Butyrate (and to a lesser extent propionate) are potent inhibitors of HDACs. HDACs are enzymes that modify histones, proteins aro...
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