Dopamine and suppressed motilin levels may contribute to the pathogenesis of postoperative ileus.
May implicate dopamine and motilin suppression in postoperative ileus; hypothesis-generating and requires clinical validation.
Two inhibitory mechanisms in the human colon which may contribute to postoperative ileus have been studied. Dopamine, a possible peripheral neurotransmitter, inhibited isolated colonic smooth muscle strips by a direct effect in longitudinal muscle any by a nerve-mediated mechanism as circular muscle. Plasma motilin levels were suppressed pre- and per- operatively and elevation of levels postoperatively correlated with the return of normal motility and the severity of the operation.
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Rennie et al. (1980) studied this question.
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