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on colonic L cells, increasing PYY release and their sensitivity to acetate. Elevated PYY acts on neighboring EC cells by means of NPY1R, thereby enhancing serotonin release and gut pain. We propose that hormonal fluctuations, in conjunction with internal (stress) or environmental (diet) factors, amplify this local estrogen-responsive colonic circuit, resulting in maladaptive gut sensitivity.
Venkataraman et al. (Thu,) studied this question.