title: [THE FEATURES OF SECRETION AND STOMACH MOTOR PROCESSES IN PATIENTS WITH DUODENAL ULCERS AS A CAUSE FOR REDUCING BIOAVAILABILITY OF PROTON PUMP INHIBITORS].
abstract: The article contains the modern data about the role of duodenal reflux in the development of acid-dependent diseases of stomach and duodenum. There are the results of studies in which the known quantitative parameters of duodenal reflux in the duodenal ulcer patients were simulated to identify their influence on the disintegration of enterosoluble dosage forms and the bioavailability of proton pump inhibitors (in healthy volunteers, patients with gasritis, exacerbation and remission of peptic ulcer disease the pharmacokinetics of lansoprazole, intragastric pH-metry with floating capsule for teleradio-pH-metry were investigated, and in an in vitro study the dissolution tests of proton pump inhibitors with pH 3 and pH = 4 were made).
  
  
  CONCLUSIONS
  The high-amplitude oscillations of intragastric pH, observed during exacerbation of duodenal ulcer, can lead to an early disintegration of enteric-coated dosage form of proton pump inhibitors in the stomach, its destruction and decreased bioavailability.
authors.forename: S Yu
authors.initials: SY
authors.lastname: Serebrova
authors.forename: M V
authors.initials: MV
authors.lastname: Zhuravleva
authors.forename: A B
authors.initials: AB
authors.lastname: Prokofiev
authors.lastname: Starodubtsey A K
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000188:drug therapy / Q000378:metabolism; D005260:Female; D005753:Gastric Mucosa / Q000378:metabolism*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D064747:Lansoprazole / Q000008:administration & dosage / Q000493:pharmacokinetics; D008297:Male; D008875:Middle Aged; D054328:Proton Pump Inhibitors / Q000008:administration & dosage / Q000493:pharmacokinetics
chemical_list: D054328:Proton Pump Inhibitors; D064747:Lansoprazole