Abstract:
:On the basis of previous studies in our laboratory we postulated that the ethanol-induced alteration in jejunal morphology was the result of its effect on the microcirculation. The present study was undertaken to examine the validity of this hypothesis. Accordingly, the effects of intraluminal ethanol perfusion (3.0 and 6.0% w/v) on mucosal morphology; water, glucose, and sodium transport; and regional blood flow were examined in in vivo jejunal segments of pentobarbital-anesthetized dogs. Compared to control segments, those perfused with ethanol exhibited a significant increase in the prevalence of morphological alterations of the mucosa, consisting of subepithelial fluid accumulation (bleb formation) and exfoliation. Those villi with epithelial damage exhibited villus cores significantly shorter than those with a normal, undamaged epithelium. Segments perfused with ethanol exhibited a depressed net water absorption, to the point that net secretion occurred in the segments perfused with 6% ethanol. Net absorption of glucose was similarly depressed by intraluminal perfusion with ethanol, whereas net absorption of sodium was unaffected. Regional jejunal blood flows were estimated using a dual, radiolabeled microsphere technique. Both total jejunal wall and total mucosal blood flow (in ml/min/100 g dry tissue) in the ethanol-perfused segments were significantly increased over control. Similarly, jejunal wall and mucosal capillary blood flows were increased by ethanol perfusion. Neither submucosal nor muscularis blood flows were affected by intraluminal perfusion with ethanol. Compared to control, shunting or nonentrapment of 9-micron microspheres was increased in the mucosa of the ethanol-perfused segments. In contrast to this, shunting of 9-micron microspheres in the submucosa and muscularis was unaffected by intraluminal perfusion with ethanol. It therefore appears that the ethanol-induced mucosal morphological alterations are accompanied by a localized mucosal hyperemia, and an increased shunting of blood through the mucosa. Based on the results of this and other studies, a microvascular mechanism was tentatively proposed to explain the pathogenesis of the ethanol-induced morphological changes.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Buell MG,Dinda PK,Beck ITdoi
10.1007/BF01311730subject
Has Abstractpub_date
1983-11-01 00:00:00pages
1005-17issue
11eissn
0163-2116issn
1573-2568journal_volume
28pub_type
杂志文章abstract::The indications for surgery on cavernous hemangiomas, the most common benign tumors of the liver, remain unclear. This study reviewed 43 patients with cavernous hemangioma of the liver who underwent hepatic resection from 1984 to 2000. Patients were divided into three groups based on the reasons for surgery. Group I c...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1023099529229
更新日期:2003-05-01 00:00:00
abstract:BACKGROUND:Peppermint oil is well known to inhibit smooth muscle contractions, and its topical administration during colonoscopy is reported to reduce colonic spasms. AIMS:We aimed to assess whether oral administration of IBGard™, a sustained-release peppermint oil formulation, before colonoscopy reduces spasms and im...
journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-020-06383-3
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1018895207333
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF02087559
更新日期:1994-05-01 00:00:00
abstract::The purpose of the present study was to investigate the prognostic role of severe hypoxemia on admission as an independent risk factor of pulmonary complications and mortality in patients with acute pancreatitis. Pulmonary complications were studied in 166 previously healthy patients with acute pancreatitis. Forty-eig...
journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01536167
更新日期:1989-01-01 00:00:00
abstract::New studies monitoring ambulatory esophageal pressures during food ingestion often compare results to normal values obtained from supine liquid swallows. We compared distal esophageal peristaltic and lower esophageal sphincter (LES) pressures in 15 normal subjects during six liquid swallows in the upright and supine p...
journal_title:Digestive diseases and sciences
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doi:10.1007/BF01536799
更新日期:1990-07-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章,评审
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abstract::The mechanism by which alcohol causes pancreatic damage is still largely unknown. One important contributory factor may be the endothelins, potent vasoconstricting endothelial-derived peptides. The aim of this study was to examine in vivo endothelin release from the pancreatic vascular endothelium after alcohol ingest...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1018845710446
更新日期:1998-05-01 00:00:00
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-008-0534-1
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-012-2327-9
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01538080
更新日期:1989-09-01 00:00:00
abstract::Clostridium difficile (CD) is one of the most common causes of diarrhea in solid organ transplantation (SOT). Between 1996 and 2005, a total of 2474 solid organ transplants were performed at our institution, of which 43 patients developed CD-associated diarrhea. There were 3 lung, 3 heart, 20 liver, 8 kidney-pancreas,...
journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-007-9770-z
更新日期:2007-11-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章,评审
doi:10.1007/s10620-019-05542-5
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abstract::Serum and urine concentrations of pancreatic polypeptide (PP) were measured during experimental acute hemorrhagic pancreatitis and small-bowel infarction in dogs. The mean serum PP concentration in animals with pancreatitis increased markedly after 1 hr and remained elevated, while the mean serum PP concentration in t...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01314764
更新日期:1981-11-01 00:00:00
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-016-4185-3
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journal_title:Digestive diseases and sciences
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更新日期:1983-12-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01308119
更新日期:1982-01-01 00:00:00
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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更新日期:1996-04-01 00:00:00
abstract:BACKGROUND:Colorectal cancer (CRC) screening is cost-effective and prevents death from CRC if used appropriately. Physicians do not recommend CRC screening according to guidelines. Physician-related factors associated with CRC screening knowledge are unknown. AIMS:We tested the accuracy of CRC screening knowledge in a...
journal_title:Digestive diseases and sciences
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更新日期:2019-02-01 00:00:00
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-019-05626-2
更新日期:2019-10-01 00:00:00
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journal_title:Digestive diseases and sciences
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更新日期:1999-01-01 00:00:00
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journal_title:Digestive diseases and sciences
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更新日期:1986-11-01 00:00:00
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journal_title:Digestive diseases and sciences
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更新日期:1989-08-01 00:00:00
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-019-05577-8
更新日期:2019-09-01 00:00:00