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Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Obes+Med 2020 ; 20 (ä): 100302 Nephropedia Template TP
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Gut microbiome dysbiosis and endotoxemia - Additional pathophysiological explanation for increased COVID-19 severity in obesity #MMPMID32984641
Belancic A
Obes Med 2020[Dec]; 20 (ä): 100302 PMID32984641show ga
The overall intestinal lipopolysaccharide (LPS) composition in the individuals with obesity could be shifted away from immunosilent/immunoinhibitory Bacteroidetes LPS subtypes, in favor of various proinflammatory LPS subtypes due to gut microbiome dysbiosis. What is more, high-fat diet, as well as obesity per se, enhance intestinal permeability through various mechanisms. Latter results in increased paracellular absorption and transcellular (via chylomicrons) transport of endogenous endotoxin in the circulatory system (endotoxemia). In addition, it is known that lipid A initiates a signaling cascade resulting in activation of various proinflammatory pathways and increases oxidative stress upon binding to tool-like receptor 4 (TLR4). Taking everything into consideration, it is very likely that gut microbiome dysbiosis and endotoxemia represent the additional pathophysiological explanation for increased COVID-19 severity in obesity.