41. He also led a study ( uncontrolled ) of secretin in the treatment of autism spectrum disorder. 42. Secretin , which binds to receptors in both the gut and the brain, could form that link.43. "' Prosecretin "'is a precursor to secretin , which is present in digestion. 44. The excitation of the vagus nerve, the administration of gastrin, secretin or cholecystokinin induce PP secretion. 45. Each child will get one injection of secretin or a placebo and be evaluated for effects one month later. 46. The Food and Drug Administration gave approval Friday to SecreFlo, the first synthetic secretin , for pancreatic diagnosis. 47. The drug will be marketed by RepliGen Corp ., which is conducting clinical trials of secretin and autism. 48. "' Secretin family of 7 transmembrane receptors "'is a family of evolutionarily related proteins. 49. Nearly every controlled clinical trial of secretin has failed to show that the hormone works as claimed, Amaral said. 50. As a result, if the pH in the duodenum increases above 4.5, secretin cannot be released.
