Gut dysbiosis is observed in several neuropsychiatric disorders exhibiting increases in anxiety behavior， and recent work suggests links between gut inflammation and such disorders. One source of this inflammation may be lipopolysaccharide (LPS)， a toxic component of gram-negative bacteria. Here， we (1) determine whether oral gavage of LPS， as a model of gut-derived endotoxemia， affects anxiety-like and/or repetitive behaviors; (2) test whether these changes depend on TLR4 signaling; and (3) test the extent to which gut-derived endotoxin and TLR4 antagonism affects males and females differently.
Gut dysbiosis is observed in several neuropsychiatric disorders exhibiting increases in anxiety behavior， and recent work suggests links between gut inflammation and such disorders. One source of this inflammation may be lipopolysaccharide (LPS)， a toxic component of gram-negative bacteria. Here， we (1) determine whether oral gavage of LPS， as a model of gut-derived endotoxemia， affects anxiety-like and/or repetitive behaviors; (2) test whether these changes depend on TLR4 signaling; and (3) test the extent to which gut-derived endotoxin and TLR4 antagonism affects males and females differently.
