To the Editor: Högenauer and colleagues (Jan. 25 issue)1report on a patient with intermittent severe diarrhea and malabsorption,which lasted several months and "improved spontaneously." Therewas no increase in serum cholecystokinin levels, and no endocrinecells could be demonstrated on one occasion by immunohistochemicalstudies in biopsy specimens of the duodenal mucosa. The authorsconcluded that the diarrhea and severe malabsorption were causedby a deficiency of cholecystokinin-producing enteroendocrinecells in the mucosa of the patient's proximal small intestine.
A deficiency of gut hormones can be experimentally induced byseveral means: the suppression of hormone secretion by somatostatin,. . . [Full Text of this Article]
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