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  • 1
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: Intraduodenal proteases exert a negative feedback on pancreatic secretion. Aim: To investigate the effect of two pancreatic enzyme preparations (enteric-coated tablets, and capsules with enteric-coated microtablets) on postprandial pancreatic and bile acid secretion, gastroduodenal motility and release of gastrin and pancreatic polypeptide in healthy humans. Methods: Twenty healthy males were studied on two different days one week apart. After an overnight fast a nine-lumen motility tube was positioned with the distal tip at the Treitz angle. On each study day, 30 min after an interdigestive migrating motor complex-phase III, a semi-liquid test meal was given either alone (n=20) or with enzymes (3 tablets (n=10) or 2 capsules with microtablets (n=10); 40000 U lipase and 2000 proteases) in a randomized order, and the study continued over 2 h. Motility was continuously recorded with four ports in the antrum and three in the duodenum, using a low-compliance pneumohydraulic perfusion system. Secretion of human-specific pancreatic elastase and bile acids was measured by a standard duodenal intubation perfusion technique. Plasma concentrations of gastrin and pancreatic polypeptide were measured by specific radioimmunoassays. Results: Postprandial pancreatic secretion was significantly reduced by administration of microtablets (median 82 mg/2 h vs. 70 mg/2 h, P〈0.02) but not by tablets (median 59 mg/2 h vs. 58 mg/2 h, N.S.). No changes were observed in bile acid secretion, antroduodenal motility or release of gastrin and pancreatic polypeptide. Conclusions: Oral administration of pancreatic enzymes at normal therapeutic doses significantly inhibits postprandial pancreatic secretion in healthy humans, when capsules with enteric-coated microtablets are given. Exogenous pancreatic enzymes have no significant effect on bile acid secretion, gastroduodenal motility and hormone release.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background : Oral pancreatic enzyme supplements should be properly administered in order to ensure an adequate gastric mixing with the food and simultameous gastric emptying with the chyme.Aim : To evaluate, in a prospective, randomized, open, comparative, three-way, crossover study, the effect of the administration schedule on the efficacy of oral pancreatic enzymes for the treatment of exocrine pancreatic insufficiency.Methods : Twenty-four consecutive chronic pancreatitis patients with maldigestion secondary to exocrine pancreatic insufficiency were treated with 40 000 U lipase in the form of capsules containing enteric-coated mini-microspheres. Capsules were taken just before meals (schedule A), just after meals (schedule B) or distributed along with meals (schedule C) for three consecutive 1-week crossover periods in a randomized order. Fat digestion before and during the three treatment periods was evaluated by an optimized mixed 13C-triglyceride breath test.Results : Before therapy, the 13CO2 recovery in the breath test was 23.8 ± 15.8% (normal 〉58.0%). During therapy, the 13CO2 recovery tended to be higher when capsules were taken along with meals (13CO2 recovery 61.4 ± 21.4%) or just after meals (13CO2 recovery 60.6 ± 21.8%) than when taken just before meals (13CO2 recovery 53.9 ± 20.3%). The percentage of patients who normalized fat digestion under therapy was 50, 54 and 63% with schedules A, B and C respectively.Conclusions : The efficacy of pancreatic enzyme supplements for the treatment of exocrine pancreatic insufficiency may be optimized by administration during or after meals.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2218
    Keywords: Key words: Common bile duct stones — Gallbladder — Bile duct calculi — Laparoscopic cholecystectomy — Endoscopic retrograde cholangiopancreaticography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Common bile duct stones (CBDS) are a frequent problem (10–15%) in patients with symptomatic cholecystolithiasis. Over the last decade, new diagnostic and surgical techniques have expanded the options for their management. This report of the Consensus Development Conference is intended to summarize the current state of the art, including principal guidelines and an extensive review of the literature. Methods: An international panel of 12 experts met under the auspices of the European Association of Endoscopic Surgery (EAES) to investigate the diagnostic and therapeutic alternatives for gallstone disease. Prior to the conference, all the experts were asked to submit their arguments in the form of published results. All papers received were weighted according to their scientific quality and relevance. The preconsensus document compiled out of this correspondence was altered following a discussion of the external evidence made available by the panel members and presented at the public conference session. The personal experiences of the participants and other aspects of individualized therapy were also considered. Results: Our panel of experts agreed that the presence of common bile duct stones should be investigated in all patients with symptomatic cholecystolithiasis. Based on preoperative noninvasive diagnostics, either endoscopic retrograde cholangiopancreaticography (ERCP) or intraoperative cholangiography should be employed for detecting CBDS. Eight of the 12 panelists recommended treating any diagnosed CBDS. For patients with no other extenuating circumstances, several treatment options exist. Stones can be extracted during ERCP, or either before or (in exceptional cases) after laparoscopic or open surgery. Bile duct clearance should always be combined with cholecystectomy. Evidence for further special aspects of CBDS treatment is equivocal and drawn from nonrandomized trials only. Conclusions: The management of common bile duct stones is currently undergoing some major changes. Many diagnostic and therapeutic strategies need further study.
    Type of Medium: Electronic Resource
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