title: Postprandial glucose-dependent insulinotropic polypeptide and insulin responses in patients with chronic pancreatitis with and without secondary diabetes.
abstract: OBJECTIVE
  To study GIP and insulin release after a test meal in patients with chronic pancreatitis with and without secondary diabetes mellitus.
  
  
  METHODS
  28 patients with chronic pancreatitis were classified in groups I and II according to the presence or absence of secondary diabetes mellitus. Twelve healthy subjects were included as controls. After a test meal plasma GIP levels and serum insulin levels were determined at 0, 30, 60, 120 and 180 min.
  
  
  RESULTS
  A significant diminished GIP response was found in the groups of patients with respect to the control group. No association could be detected with severity of pancreatic insufficiency. Higher values of GIP were demonstrated at 60 and 120 min in patients without diabetes than in patients with it.
  
  
  CONCLUSIONS
  An abnormal GIP response is present in cases of chronic pancreatitis irrespective of the presence or severity of pancreatic insufficiency. This response is further affected if secondary diabetes mellitus is present.
authors.affiliation: Department of Internal Medicine, La Paz Hospital, Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Gómez-Cerezo
authors.forename: M C
authors.initials: MC
authors.lastname: Garcés
authors.forename: R
authors.initials: R
authors.lastname: Codoceo
authors.forename: A
authors.initials: A
authors.lastname: Soto
authors.forename: F
authors.initials: F
authors.lastname: Arnalich
authors.forename: J
authors.initials: J
authors.lastname: Barbado
authors.forename: J J
authors.initials: JJ
authors.lastname: Vázquez
mesh_terms: D000328:Adult; D000367:Age Factors; D003920:Diabetes Mellitus / Q000378:metabolism*; D004063:Digestion / Q000502:physiology; D010188:Exocrine Pancreatic Insufficiency / Q000378:metabolism; D005260:Female; D005749:Gastric Inhibitory Polypeptide / Q000097:blood / Q000378:metabolism*; D005934:Glucagon; D052216:Glucagon-Like Peptide 1; D004763:Glucagon-Like Peptides; D006801:Humans; D007328:Insulin / Q000097:blood / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D010195:Pancreatitis / Q000378:metabolism*; D010446:Peptide Fragments / Q000494:pharmacology; D019518:Postprandial Period / Q000502:physiology; D012737:Sex Factors
chemical_list: D007328:Insulin; D010446:Peptide Fragments; C055453:glucagon-like peptide 1 (7-36)amide; D005749:Gastric Inhibitory Polypeptide; D004763:Glucagon-Like Peptides; D052216:Glucagon-Like Peptide 1; D005934:Glucagon