Abstract：
:The purpose of this study was to investigate the histogenesis of experimental tumors in the rat esophagus. Thirty rats received 0.0015% N-methyl-N-amylnitrosamine (MNAN) in the drinking water for 12 weeks. Another 30 rats received tap water. All rats then received tap water until sacrifice. Rats from each group were sacrificed immediately after MNAN administration, four weeks after, and eight weeks after. One hour before sacrifice, [3H]TdR was injected by tail vein to label proliferating cells. The entire esophagus and stomach were removed and processed for light and electron microscopy and autoradiography. The overall frequency of esophageal tumors after MNAN was 83% and did not differ significantly among the three experimental groups. Tumors were primarily papillomas and squamous cell carcinomas and occurred with equal frequency in the upper, middle, and lower thirds of the esophagus. No tumors were found in the squamous-lined forestomach. Electron microscopy revealed abundant tonofilaments, free ribosomes, and mitochondria accompanied by vacuoles. By autoradiography, esophageal epithelial proliferation was markedly stimulated in nontumorous mucosa from all three experimental groups. We conclude that MNAN ingestion for 12 weeks reliably produces papillomas and squamous cell carcinomas throughout the rat esophagus, but not in the squamous-lined forestomach, and that MNAN stimulated marked epithelial proliferation which is accompanied by thickening of the epithelium in nontumorous esophageal mucosa.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Kuwayama H,Eastwood GLdoi
10.1007/BF01536636subject
Has Abstractpub_date
1988-01-01 00:00:00pages
83-91issue
1eissn
0163-2116issn
1573-2568journal_volume
33pub_type
杂志文章abstract：:Twenty-eight patients with delayed gastric emptying as measured by an abnormal barium "burger" were treated with metoclopramide in a randomized, double-blind fashion. Five had diabetic gastroparesis, four had undergone vagotomy and pyloroplasty, and 19 were idiopathic. Patients received either metoclopramide or placeb...
journal_title：Digestive diseases and sciences
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF01314461
更新日期：1979-09-01 00:00:00
abstract：:The gut endocrine gene, neurotensin (NT/N), is expressed in a strict temporally and spatially specific pattern. Utilizing a sensitive reverse transcription-polymerase chain reaction procedure, we analyzed foregut and midgut organs for NT/N expression, determined the earliest apparent time point that NT/N is expressed ...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1023/a:1026637730050
更新日期：1999-01-01 00:00:00
abstract：BACKGROUND:Gut inflammation is prevalent in chronic kidney disease (CKD) and likely contributes to systemic inflammation via disruption of the epithelial tight junction with subsequent endotoxin and bacterial translocation. AIMS:To study the expression profile of inflammatory and tight junction proteins in the colon f...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/s10620-014-3428-4
更新日期：2015-05-01 00:00:00
abstract：BACKGROUND AND AIMS:Avoidance of gluten is critical for individuals with celiac disease (CD), but there is also concern that "extreme vigilance" to a strict gluten-free diet may increase symptoms such as anxiety and fatigue, and therefore, lower quality of life (QOL). We examined the associations of QOL with energy lev...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/s10620-018-4936-4
更新日期：2018-06-01 00:00:00
abstract：:An experimental model of massive (80%) small bowel resection and antiperistaltic colon interposition in between the remnant jejunum and ileum was created in rhesus monkeys. The gastrointestinal functions were assessed preoperatively and at different periods after the operation. Progressive increase in the transit time...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/BF01318183
更新日期：1985-05-01 00:00:00
abstract：BACKGROUND:Endoscopic ultrasound (EUS) with fine needle aspiration (FNA) is a safe and effective way to sample lesions in the gastrointestinal tract. Rapid on-site specimen evaluation (ROSE) improves the accuracy of EUS-FNA. While data suggests that EUS with fine-needle biopsy (EUS-FNB) is effective, it remains unclear...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/s10620-013-2613-1
更新日期：2013-07-01 00:00:00
abstract：:Lymphomatous involvement of the liver may present as acute liver failure but is an absolute contraindication for liver transplantation. Therefore it is imperative to diagnose such patients since survival in this group is poor and recurrence is high. We describe two patients with acute liver failure referred for liver ...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章,评审
doi：10.1007/BF02093804
更新日期：1994-06-01 00:00:00
abstract：:By using two-color immunofluorescence with fluorescein isothiocyanate (FITC) and phycoerythrin (PE)-labelled monoclonal antibodies and multiparameter flow cytometry, we investigated lamina propria lymphocyte subsets of patients with ulcerative colitis (UC) and Crohn's disease (CD). Leu-3/Leu-2 (CD4/CD8) ratio of lamin...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/BF01296815
更新日期：1991-10-01 00:00:00
abstract：:Orlistat (tetrahydrolipstatin) is a potent inhibitor of gastric and pancreatic lipase activity causing a diminution of free fatty acids in the intestinal lumen. The release of cholecystokinin (CCK) critically depends on the presence of free fatty acids in the small intestine. Postprandial CCK release and gallbladder c...
journal_title：Digestive diseases and sciences
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF02100135
更新日期：1996-12-01 00:00:00
abstract：:Resistant starch is by definition that part of starch that escapes digestion in the small bowel. Cecal fermentation of resistant starch into short-chain fatty acids will result subsequently in a decrease in pH. Thus, resistant starch may have the same effect on colonic luminal contents and mucosa as some fiber compone...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/BF02087431
更新日期：1994-04-01 00:00:00
abstract：BACKGROUND AND AIMS:Colorectal cancer (CRC) screening with a fecal immunochemical test (FIT) reduces CRC mortality; however, the acceptance rate of a colonoscopy in patients with a positive FIT was not high. The aim of this study was therefore to determine whether a telephone reminder call could increase the acceptance...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/s10620-011-1720-0
更新日期：2011-11-01 00:00:00
abstract：:To evaluate the frequency and type of gastroduodenal mucosal inflammatory changes in patients with symptomatic acid peptic disease and nonulcer dyspepsia, 100 patients with gastrointestinal symptoms indicative of acid peptic disease or dyspepsia and 10 control subjects were clinically evaluated and underwent radiograp...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/BF01308325
更新日期：1980-09-01 00:00:00
abstract：BACKGROUND:Notoginsenoside R1 (NG-R1) is the predominant active ingredient and a novel triterpene saponin compound extracted from the roots of Panax notoginseng. To date, to the best of our knowledge, there are no previous studies concerning the effect of NG-R1 on hepatocellular carcinoma (HCC). AIMS:To investigate th...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/s10620-019-05856-4
更新日期：2020-05-01 00:00:00
abstract：:Pulmonary injury with leukocyte infiltration is a frequent occurrence in obstructive cholangitis patients. We wished to evaluate the roles of reactive oxygen species and vascular cell adhesion molecule-1 (VCAM-1) in this distant organ failure. Wild type (WT) and transgenic (SODtg) mice overexpressing superoxide dismut...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1023/a:1017980406036
更新日期：2002-03-01 00:00:00
abstract：:Our aim was to investigate whether there are changes in permeability to sucrose in asymptomatic Helicobacter pylori gastritis. Nineteen asymptomatic subjects with Helicobacter pylori-associated gastritis with no or mild mucosal atrophy and 19 age- and sex-matched normal controls were studied by peroral load of sucrose...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1023/a:1018809913230
更新日期：1998-04-01 00:00:00
abstract：BACKGROUND:New molecular biology-based methods of bacterial identification are expected to help elucidate the relationship between colorectal cancer (CRC) and intestinal microbiota. Although there is increasing evidence revealing the potential role of microbiota in CRC, it remains unclear whether microbial dysbiosis is...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/s10620-012-2526-4
更新日期：2013-06-01 00:00:00
abstract：:This study investigated the effects of intravenous morphine on gastric antral and duodenal motility in healthy volunteers. Intravenous morphine (both infusion and bolus) increased duodenal motility, typically as bursts of contractions similar to phase III of the migrating motor complex. Intravenous infusion of morphin...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1023/a:1026684132254
更新日期：1999-11-01 00:00:00
abstract：:In addition to cholecystokinin, other hormones have been suggested to be involved in regulation of postprandial gallbladder contraction. We aimed to evaluate effects of growth hormone (GH) on gallbladder contractility and cholecystokinin release. Gallbladder and gastric emptying (by ultrasound) and cholecystokinin rel...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1023/b:ddas.0000020515.75879.2f
更新日期：2004-03-01 00:00:00
abstract：BACKGROUND AND AIMS:Concanavalin A is known to activate T cells and to cause liver injury and hepatitis, mediated in part by secretion of TNFα from macrophages. Poly(ADP-ribose) polymerase-1 (PARP-1) inhibitors have been shown to prevent tissue damage in various animal models of inflammation. The objectives of this stu...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/s10620-018-5267-1
更新日期：2018-12-01 00:00:00
abstract：:We have developed a breath test to measure solid gastric emptying using a standardized scrambled egg test meal (250 kcal) labeled with [14C]octanoic acid or [13C]octanoic acid. In vitro incubation studies showed that octanoic acid is a reliable marker of the solid phase. The breath test was validated in 36 subjects by...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/BF02300385
更新日期：1994-12-01 00:00:00
abstract：:Hepatopulmonary syndrome has yet not been sufficiently assessed in noncirrhotic portal hypertension. The prevalence of hepatopulmonary syndrome was determined in 31 consecutive patients with noncirrhotic portal hypertension (19 idiopathic portal hypertension, 7 portal vein thrombosis, 5 congenital hepatic fibrosis) an...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1023/a:1022549018807
更新日期：2003-03-01 00:00:00
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：:Patients with long-standing ulcerative colitis (UC) or Crohn's colitis are at increased risk of developing colorectal cancer (CRC). Given that most cases of CRC are thought to arise from dysplasia, previous guidelines have recommended endoscopic surveillance with random biopsies obtained from all segments of the colon...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章,评审
doi：10.1007/s10620-015-3979-z
更新日期：2016-04-01 00:00:00
abstract：:Simultaneous recordings of gastric manometry and myoelectrical activity were made in 10 patients with gastroparesis. Intravenous erythromycin (100 mg) was administered in the fasting state for a period of 30 min. Subcutaneous injection of octreotide (100 microg) was administered before one of the four identical test m...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1023/a:1018876021156
更新日期：1998-01-01 00:00:00
abstract：:Alterations of small intestinal sensory thresholds and small intestinal dysmotility are associated with functional dyspepsia. Because gastric and duodenal afferents partly project to the same areas, we postulated that patients with functional dyspepsia and H. pylori infection would be characterized by lower duodenal s...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/BF02088548
更新日期：1996-07-01 00:00:00
abstract：:Fractional systemic bioavailability of orally administered drugs was found to be unexpectedly low in liver cirrhosis, even after surgical portal-systemic shunting. Fecal loss or intestinal first-pass elimination were assumed to explain the finding. In this paper we evaluated alternative pathophysiological interpretati...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1023/a:1005678627599
更新日期：2001-03-01 00:00:00
abstract：BACKGROUND:Forkhead box P3 (FOXP3)+ regulatory T cells (Tregs) are critical for controlling inflammation in the gastrointestinal tract. There is a paradoxical increase of mucosal FOXP3+ T cells in patients with inflammatory bowel disease (IBD). These FOXP3+ cells were recently shown to include interleukin (IL)-17A-prod...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/s10620-012-2292-3
更新日期：2012-11-01 00:00:00
abstract：:Animal studies have shown that calcium blocking drugs decrease lower esophageal sphincter pressure and inhibit peristaltic amplitude and duration. In a single-dose acute study, we compared the effects of a new oral calcium blocker, diltiazem (90, 120, 150 mg) with placebo in five volunteers and 10 patients with chest ...
journal_title：Digestive diseases and sciences
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF01347298
更新日期：1984-07-01 00:00:00
abstract：BACKGROUND:Different factors have been associated with prolonged fluoroscopy time (FT) during endoscopic retrograde cholangiopancreatography (ERCP). AIM:We hypothesize that FT depends on both the anatomical location of the pathology managed during ERCP and the complexity of the ERCP. METHODS:Three centers participate...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章,多中心研究
doi：10.1007/s10620-014-3508-5
更新日期：2015-06-01 00:00:00
abstract：:Gastric antral vascular ectasia was endoscopically diagnosed in seven patients. Pathologic characteristics of this entity were defined retrospectively, by studying endoscopic pinch biopsy slides from these seven patients and antrectomy specimens from five patients. A scoring system was developed, and the seven patient...
journal_title：Digestive diseases and sciences
pub_type： 杂志文章
doi：10.1007/BF01540274
更新日期：1989-06-01 00:00:00
