Abstract:
:We examined the effect of sildenafil, an inhibitor of phosphodiesterase subtype 5, that catalyzes hydrolysis of 3',5'-cyclic guanosine monophosphate (cGMP), on indomethacin-induced small-intestinal ulceration in rats and investigated the mechanism of this action, especially in relation to endogenous nitric oxide (NO). Animals without fasting were given indomethacin (10 mg/kg) s.c. and then killed 24 h later. Indomethacin produced hemorrhagic lesions in the small intestine, accompanied by a promotion of enterobacterial invasion and the expression of inducible NO synthase (iNOS) as well as myeloperoxidase (MPO) activity in the mucosa. Sildenafil (3-20 mg/kg), given p.o. 30 min before indomethacin, dose-dependently reduced the severity of these lesions, with concomitant suppression of the increase in MPO activity, iNOS expression and bacterial invasion. These effects were attenuated by the prior administration of the nonselective NOS inhibitor, N (G)-nitro-L-arginine methyl ester, in an L-arginine-reversible manner. Indomethacin also decreased the secretion of mucus and fluid (enteropooling) and enhanced intestinal motility, but these responses were all prevented by the prior administration of sildenafil. Likewise, pretreatment of the animals with NOR-3, a NO donor, also reversed the functional changes caused by indomethacin, followed by suppression of bacterial invasion and iNOS expression, and prevented the development of intestinal lesions. These results suggest that sildenafil prevents indomethacin-induced small-intestinal ulceration in rats, via a NO/cGMP-dependent mechanism, and this effect is functionally associated with an increase in the secretion of mucus/fluid and a decrease of hypermotility, resulting in the suppression of bacterial invasion and iNOS expression following indomethacin treatment.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Kato N,Mashita Y,Kato S,Mitsufuji S,Yoshikawa T,Takeuchi Kdoi
10.1007/s10620-008-0646-7subject
Has Abstractpub_date
2009-11-01 00:00:00pages
2346-56issue
11eissn
0163-2116issn
1573-2568journal_volume
54pub_type
杂志文章abstract::Neurotensin-like immunoreactivity (NTLI) is released into the circulation following a meal. However, the factors influencing its degradation and metabolism are uncertain, but it is presumed that the kidneys and liver are involved. This study has determined the release of NTLI after a liquid fat meal (200 ml 20% Intral...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01296684
更新日期:1987-01-01 00:00:00
abstract::Previous studies have demonstrated alterations in brain response to rectal distension in patients with irritable bowel syndrome (IBS) compared to controls. Our aim was to compare regional brain activity in response to rectal balloon distension in patients with IBS and healthy controls. We studied six patients with IBS...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1025455330704
更新日期:2003-09-01 00:00:00
abstract::Two baboons receiving intramuscular injections of ferric nitrilotriacetate over a two-year period were compared with two control baboons. The results indicate that in iron-overloaded animals: liver iron excess was major (maximal liver iron concentration values of 42 mumol/100 mg dry weight for both animals vs 1.3 +/- ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01296163
更新日期:1987-06-01 00:00:00
abstract::The aim of this study was to investigate the effect of intestinal electrical stimulation on small intestinal dysrhythmia and motion sickness-like symptoms induced by vasopressin. Female dogs chronically implanted with two pairs of electrodes on jejunum serosa were used in a four-session study. Saline and vasopressin w...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/b:ddas.0000030080.60168.01
更新日期:2004-05-01 00:00:00
abstract:INTRODUCTION:With an increasing number of available therapies for inflammatory bowel disease (IBD), little is known about patients' attitudes regarding IBD-related direct-to-consumer advertising (IBD-DTCA) and its impact on treatment decisions in clinical practice. METHODS:We administered a 58-item, mailed questionnai...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-020-06180-y
更新日期:2021-01-01 00:00:00
abstract::Inadequate vegetable intake appears to increase colon cancer risk. Since genetic variation in taste influences vegetable preference, we tested associations between bitterness of 6-n-propylthiouracil (PROP), a measure of taste genetics, and number of colonic polyps, a measure of colon cancer risk, in 251 men who underw...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-005-2462-7
更新日期:2005-03-01 00:00:00
abstract::In this study, two antiallergic compounds, betamethasone and disodium cromoglycate were tested in an animal model of intestinal anaphylaxis. Rats, immunized with Nippostrongylus brasiliensis, were challenged intravenously with whole worm antigen or saline. Antigen challenge resulted in significant abnormalities: epith...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01299863
更新日期:1992-11-01 00:00:00
abstract:BACKGROUND:Subjects with fatty liver disease (FLD) can show increased hepatic 2-deoxy-2-((18)F)fluoro-D-glucose (FDG) uptake, but the role of hepatic inflammation has not been explored. AIMS:We investigated whether hepatic inflammatory response, as implicated by elevated serum markers, is associated with increased liv...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-013-2957-6
更新日期:2014-03-01 00:00:00
abstract:UNLABELLED:Recent evidence suggests that psychological factors may affect esophageal as well as intestinal motility. To study this further, we compared the psychological profiles of 20 irritable bowel patients and 20 patients with recurrent noncardiac chest pain associated with high-amplitude peristaltic contractions i...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01300697
更新日期:1986-02-01 00:00:00
abstract:BACKGROUND:Mast cells (MCs), PAR2 and TRPV1, play a key role in the regulation of visceral pain. Several studies have found that probiotics regulate visceral sensitivity. AIMS:The purpose of the current study was to explore the role of MC-PAR2-TRPV1 in VH and the mechanism of VSL#3 in a rat model of VH. METHODS:A tot...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-018-5416-6
更新日期:2019-05-01 00:00:00
abstract::Gas within the stomach wall is a rare occurrence. A case of intramural gas is presented. When air or gas is seen within the gastric wall on x-ray, gastric emphysema, emphysematous gastritis, or pneumatosis intestinalis is diagnosed. These classifications have become vague and contradictory. Gas in the gastric wall can...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01316582
更新日期:1982-10-01 00:00:00
abstract:BACKGROUND:Total parenteral nutrition (TPN), a necessary treatment for patients who cannot receive enteral nutrition, is associated with infectious complications due in part to a loss of intestinal epithelial barrier function (EBF). Using a mouse model of TPN, with enteral nutrient deprivation, we previously demonstrat...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-015-3991-3
更新日期:2016-06-01 00:00:00
abstract::Acid inhibition after proton pump inhibitors in children is variable, and to measure it by a noninvasive method may help to tailor treatment. To study gastric acid inhibition after a single dose of PPI, by measuring urinary acid output (UAO), which decreases as parietal cells release acid into the stomach during a mea...
journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1023/a:1016465116541
更新日期:2002-08-01 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::The aim of the study was to assess the value of quantitative attenuation values (Hounsfield units) and of gallstone pattern by computerized tomography in predicting response to bile acid therapy. We carried out a prospective study in a multicenter setting on 90 consecutive outpatients with radiolucent gallstones. All ...
journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/BF02208664
更新日期:1995-09-01 00:00:00
abstract::This study investigated the effects of portal hypertension on gastric motor and secretory functions and the role of endothelin in rats. Control; sham-operated; endothelin-A receptor blocker, BQ 485 (1 microgram/kg)-treated; portal hypertensive; and portal hypertension +, endothelin-A receptor blocker-treated rats were...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF02282345
更新日期:1996-03-01 00:00:00
abstract::It has been suggested that elevated serum lipoprotein cholesterol levels may be a determinant of biliary cholesterol saturation and cholesterol gallstone disease. The aim of this study was to correlate serum lipoprotein cholesterol and apolipoprotein levels with biliary cholesterol saturation in patients with gallston...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01317086
更新日期:1984-12-01 00:00:00
abstract::We postulated that coadministration of cholylsarcosine with ursodeoxycholic acid might provide additional benefit to primary biliary cirrhosis patients with an incomplete response to ursodeoxycholic acid. Our aim was to test the tolerability and the effect of adjuvant cholylsarcosine on liver tests and plasma choleste...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1018868126743
更新日期:1998-06-01 00:00:00
abstract:BACKGROUND:In patients with chronic pancreatitis (CP), pain relief is a dilemma. Antioxidants with pregabalin therapy have been reported to be useful. Hence, this study was carried out to determine the efficacy of the combination of antioxidant and pregabalin therapy in reducing pain in patients with CP. METHODS:This ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-020-06711-7
更新日期:2020-11-18 00:00:00
abstract:INTRODUCTION:Voluntary muscle activity, including swallowing, decreases during the night. The association between nocturnal awakenings and swallowing activity is under-researched with limited information on the frequency of swallows during awake and asleep periods. AIM:The aim of this study was to assess nocturnal swa...
journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章
doi:10.1007/s10620-012-2474-z
更新日期:2013-04-01 00:00:00
abstract::An international working team of 13 investigators met on two occasions to develop guidelines for standardizing the procedures used to test gastrointestinal muscle tone and sensory thresholds using a barostat. General recommendations were: (1) Use a thin-walled plastic bag that is infinitely compliant until its capacit...
journal_title:Digestive diseases and sciences
pub_type: 指南,杂志文章,实务指引
doi:10.1023/a:1018885028501
更新日期:1997-02-01 00:00:00
abstract::The study was undertaken to examine regional differences in the concentrations of five regulatory peptides in the human colonic mucosa. Biopsies were obtained during routine colonoscopy from 33 patients whose colonic mucosa was macroscopically and histologically normal. Regulatory peptides were extracted, and measured...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01537267
更新日期:1989-08-01 00:00:00
abstract::The purpose of this study was to investigate the potential of a computerized auscultation method for providing an objective, quantitative measure characteristic of irritable bowel syndrome. Bowel sounds from irritable bowel patients and normal controls were digitized using an electronic stethoscope. Computerized analy...
journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章
doi:10.1023/a:1018859110022
更新日期:1999-09-01 00:00:00
abstract::Left-sided portal hypertension is a rare clinical syndrome which may lead to bleeding from isolated gastric varices. Pancreatic disease is the most common etiology. Left-sided portal hypertension should be considered in the presence of gastrointestinal bleeding with normal liver function and unexplained splenomegaly. ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章,评审
doi:10.1007/s10620-006-9307-x
更新日期:2007-05-01 00:00:00
abstract:BACKGROUND:A new device with metallic wires for scrape cytology was developed. AIMS:To compare the diagnostic performance of scrape cytology and conventional cytology during endoscopic retrograde cholangiopancreatography for biliary strictures. METHODS:A total of 420 cases with biliary stricture underwent transpapill...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-018-5217-y
更新日期:2019-01-01 00:00:00
abstract::A 70-year-old woman with secretory diarrhea was studied with a novel technique of recording small intestinal myoelectrical activity which allowed us to obtain long, uninterrupted records of slow waves and spikes at eight or more different intestinal levels simultaneously. Typical migrating action potential complexes (...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01300207
更新日期:1987-10-01 00:00:00
abstract::Our purpose was to evaluate the relationship between the clinical and histological features in a cohort of patients who had gastroesophageal reflux-related lesions diagnosed after upper digestive endoscopy. In all, 589 patients scheduled for elective endoscopy in a multicentric prospective study were evaluated. Multip...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章,多中心研究
doi:10.1023/a:1026666417658
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:Major modification of the 7th tumor-node-metastasis (TNM) staging system for hepatocellular carcinoma (HCC) was divided into 6th stage IIIA to 7th IIIA (multiple tumors, any>5 cm) and IIIB (tumors involving a major vessel). This study aimed to validate 6th and 7th TNM systems in prognostic prediction, then a...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-013-2716-8
更新日期:2013-09-01 00:00:00
abstract::The motor function of the gallbladder after partial distal gastrectomy for gastric carcinoma (Billroth-I reconstruction) and its relationship to the motor function of the stomach was investigated using a double-isotope method. In this method, [99mTc]N-54-pyridoxyl-5-methyltryptophan ([99mTc]PMT) was utilized as a trac...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF02064968
更新日期:1995-04-01 00:00:00
abstract::Intestinal bacterial overgrowth (IBO) has been suggested to play a pathogenic role in patients with nonalcoholic fatty liver disease (NAFLD). Delayed intestinal transit may contribute to IBO development. Ten nondiabetic patients with NAFLD and abnormal liver enzymes were recruited. Ten healthy individuals, matched by ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-005-2720-8
更新日期:2005-06-01 00:00:00