Abstract:
:Helicobacter pylori produces a 550 kDa, multimeric, nickel-containing urease that catalyses the hydrolysis of urea to yield ammonia and carbonic acid. The ure gene cluster, comprised of seven genes, encodes the two structural subunits UreA (26.5 kDa) and UreB (60.3 kDa), and five accessory proteins: UreI, UreE, UreF, UreG and UreH. Accessory proteins are required for nickel ion insertion into the apoenzyme. The native protein consists of six copies each of UreA and UreB; two nickel ions are coordinated into each UreB active site. Urease is found in the cytosol, but may also localize on the surface (although this may be an artefact) and elicits a strong serum immunoglobulin response. Urease aids in colonization of the host by neutralizing gastric acid and providing ammonia for bacterial protein synthesis. Host defences are avoided by urease by continuing to neutralize acid locally and by shedding urease, which may be bound by immunoglobulin, from the surface of the bacterium. Host tissues can be damaged directly by the urease-mediated generation of ammonia and indirectly by urease-induced stimulation of the inflammatory response, including recruitment of leukocytes and triggering of the oxidative burst in neutrophils.
journal_name
Aliment Pharmacol Therjournal_title
Alimentary pharmacology & therapeuticsauthors
Mobley HLdoi
10.1046/j.1365-2036.1996.22164006.xsubject
Has Abstractpub_date
1996-04-01 00:00:00pages
57-64eissn
0269-2813issn
1365-2036journal_volume
10 Suppl 1pub_type
杂志文章abstract:BACKGROUND:Peristomal wound infections are common complications of percutaneous endoscopic gastrostomy (PEG), especially in hospitals where methicillin-resistant Staphylococcus aureus (MRSA) is endemic. Evidence suggests that antibiotic prophylaxis at PEG insertion may reduce infection rates. AIM:To examine rates of p...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2006.03242.x
更新日期:2007-03-01 00:00:00
abstract::The treatment of non-alcoholic fatty liver disease may be worthwhile to prevent progression to advanced liver failure, but no therapy is definitely evidence-based. Weight loss or lifestyle modifications remain the primary line of intervention, particularly in overweight or obese subjects. In adult non-alcoholic fatty ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2036.2005.02593.x
更新日期:2005-11-01 00:00:00
abstract:BACKGROUND:Therapeutic options for achalasia include pharmacological therapy, surgical myotomy, pneumatic dilatation and intrasphincteric botulinum toxin injection. AIM:To compare botulinum toxin injection with pneumatic dilatation in a randomized trial. PATIENTS/METHODS:Forty adults with newly diagnosed achalasia we...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2036.2001.01065.x
更新日期:2001-09-01 00:00:00
abstract:BACKGROUND:Proton pump inhibitor (PPI) therapy is known to suppress gastric acid secretion. Thus PPI therapy may decrease gastric volume and gastric contents available for gastro-oesophageal reflux by decreasing acid secretion. AIM:To determine the effect of PPI therapy on the gastric volume after a standard meal. ME...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2009.03947.x
更新日期:2009-04-15 00:00:00
abstract:BACKGROUND:Delayed gastric emptying, impaired gastric accommodation to a meal and hypersensitivity to gastric distension have been implied in the pathophysiology of functional dyspepsia. Dyspeptic patients are often treated with the prokinetic drug cisapride. AIM:To assess the effects of cisapride on perception of gas...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2036.1998.00366.x
更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:Anti-TNF agents are now widely used in Crohn's disease (CD), and in ulcerative colitis (UC). AIM:To review the safety profile of anti-TNF agents in all patients treated with infliximab in Edinburgh from 1999 to 2007. METHODS:Complete data were available on 202/207 patients comprising 157 CD, 42 UC and thre...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2008.03882.x
更新日期:2009-02-01 00:00:00
abstract:AIM:To estimate the cost-effectiveness over a 4-year duration of lamivudine and adefovir dipivoxil for patients with hepatitis B 'e' antigen-negative chronic hepatitis B. METHODS:A decision analysis model has been used to perform a cost-effectiveness analysis of lamivudine and adefovir dipivoxil from the perspective o...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2006.02767.x
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND:Re-bleeding of Helicobacter pylori-associated peptic ulcer disease is reduced by H. pylori eradication. AIM:To validate a non-invasive test, the Premium Platinum HpSA stool test, in patients with upper gastrointestinal bleeding. METHODS:Stool samples of consecutive patients with relevant bleeding from gast...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1046/j.1365-2036.2003.01548.x
更新日期:2003-04-01 00:00:00
abstract:BACKGROUND:There has been growing interest in the use of faecal microbiota transplantation (FMT) for the treatment of gastrointestinal and nongastrointestinal diseases. AIM:To review systematically the reported efficacy and safety of FMT in the management of gastrointestinal and nongastrointestinal disorders in adults...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/apt.12699
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND:Prior studies suggest that histamines may modulate the development of colorectal neoplasia. AIM:To assess whether histamine receptor antagonist use was associated with adenoma formation. METHODS:Patients (n = 2366) were drawn from three adenoma chemoprevention trials. All underwent baseline colonoscopy wit...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,meta分析
doi:10.1111/j.1365-2036.2005.02529.x
更新日期:2005-07-15 00:00:00
abstract:BACKGROUND:Gut microflora-mucosal interactions may be involved in the pathogenesis of irritable bowel syndrome (IBS). AIM:To investigate the efficacy of a novel prebiotic trans-galactooligosaccharide in changing the colonic microflora and improve the symptoms in IBS sufferers. METHODS:In all, 44 patients with Rome II...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2036.2008.03911.x
更新日期:2009-03-01 00:00:00
abstract:BACKGROUND:Considerable information has been gathered on the functional organization of enteric neuronal circuitries regulating gastrointestinal motility. However, little is known about the neuropathophysiological mechanisms underlying gastrointestinal motor disorders. AIM:To analyse the most important pathological fi...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2036.2008.03707.x
更新日期:2008-07-01 00:00:00
abstract:BACKGROUND:Consensus guidelines aid in the diagnosis and management of autoimmune hepatitis, but they are frequently based on low-quality clinical evidence, conflicting experiences and divergent opinions. Recommendations may be weak, discrepant or non-existent at critical decision points. AIMS:To identify the decision...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/apt.12381
更新日期:2013-08-01 00:00:00
abstract:BACKGROUND:The low Fermentable Oligo-, Di- Monosaccharides, and Polyoles (FODMAP) diet is a new treatment option for irritable bowel syndrome (IBS). Experts refer to the diet as supported by high level of evidence, but an evaluation of the quality of trials is lacking. AIM:To provide a systematic review of the quality...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/apt.14065
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Most array analyses of ulcerative colitis have focused on identifying susceptibility genes for ulcerative colitis. AIM:To clarify the changes in gene expression during inflammation in ulcerative colitis colon mucosa using cDNA macroarray. METHODS:From 23 ulcerative colitis patients, 16 each of inflamed and...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2005.02443.x
更新日期:2005-05-01 00:00:00
abstract::The effect of 7 days of oral dosing with 5 mg day-1 and 20 mg day-1 omeprazole on basal and pentagastrin-stimulated gastric acid output was studied in nine duodenal ulcer patients. Basal acid output measured 5-6 h post-dosing was decreased by a mean of 75% on 5 mg omeprazole and by 90% on 20 mg omeprazole (P less than...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1365-2036.1988.tb00696.x
更新日期:1988-06-01 00:00:00
abstract:BACKGROUND:In patients with primary sclerosing cholangitis follow-up magnetic resonance imaging (MRI) with magnetic resonance cholangiopancreatography (MRCP) is performed by many centres, particularly for the early detection of biliary malignancies and strictures. Clinically meaningful MRI-based definitions of primary ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.14797
更新日期:2018-07-01 00:00:00
abstract::Upper gastrointestinal symptoms are highly prevalent; usually those consulting have multiple symptoms, confounding management. Here, common clinically relevant management issues are considered based on the best available evidence. Regardless of the presenting symptoms, determine if there are any alarm features; these ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2036.2004.02043.x
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND:The increasing incidence of Clostridium difficile (C. difficile) infection (CDI) among patients with inflammatory bowel disease is well recognised. However, most studies have focused on demonstrating that CDI is associated with adverse outcomes in IBD patients. Few have attempted to identify predictors of se...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1365-2036.2012.05022.x
更新日期:2012-04-01 00:00:00
abstract:BACKGROUND:Ingested peanut agglutinin stimulates colonic proliferation in humans. In rats, ingested peanut agglutinin stimulates hormone release and proliferation in the small and large intestines. Peanut agglutinin is absorbed into the circulation but little is known about the systemic effect of this lectin. Therefore...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1046/j.1365-2036.2000.00764.x
更新日期:2000-06-01 00:00:00
abstract:BACKGROUND:Faecal calprotectin and lactoferrin increasingly serve as surrogate markers of disease activity in IBD. Data on the correlation of these markers with simple endoscopic score for Crohn's disease (SES-CD) and with histological findings are as yet limited. Aim To study the correlation of faecal calprotectin and...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2008.03835.x
更新日期:2008-11-15 00:00:00
abstract:BACKGROUND:The sequential organ failure assessment (SOFA) score is an effective triage marker following single time point paracetamol (acetaminophen) overdose, but has not been evaluated following staggered (multiple supratherapeutic doses over >8 h, resulting in cumulative dose of >4 g/day) overdoses. AIM:To evaluate...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2012.05102.x
更新日期:2012-06-01 00:00:00
abstract:BACKGROUND:Pregabalin has a broad spectrum of analgesic and antihyperalgesic activity in both basic and clinical studies. However, its mechanisms and sites of action have yet to be determined in humans. AIMS:To assess the antinociceptive effect of pregabalin on experimental gut pain in patients with visceral hyperalge...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2036.2011.04802.x
更新日期:2011-10-01 00:00:00
abstract:BACKGROUND:Crohn's disease (CD) and ulcerative colitis (UC) are chronic inflammatory diseases of the intestine, which frequently require surgery for complications or failure of medical therapy. AIM:To seek evidence and provide direction for clinicians on optimal strategies to enable steroid free remission in inflammat...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2036.2008.03753.x
更新日期:2008-09-15 00:00:00
abstract:BACKGROUND:Low-dose thiopurine-allopurinol (LDTA) combination therapy is a commonly applied optimisation strategy in IBD patients with a skewed thiopurine metabolism. AIM:To assess continued LDTA maintenance treatment at annual intervals and explore risk factors for treatment cessation METHODS: Adult IBD patients trea...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.15402
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:Retrospective accounts suggest that therapeutic doses of paracetamol can produce severe hepatic injury in patients with putative high-risk conditions, including alcoholism and infectious hepatitis. Metabolism of paracetamol to its hepatotoxic metabolite is enhanced in patients who abuse alcohol, who also hav...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2036.2010.04364.x
更新日期:2010-08-01 00:00:00
abstract:BACKGROUND:Drug development in hepatocellular carcinoma (HCC) is limited by disease heterogeneity, with hepatic reserve being a major source of variation in survival outcomes. The albumin-bilirubin (ALBI) grade is a validated index of liver function in patients with HCC. AIM:To test the accuracy of the ALBI grade in p...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,多中心研究
doi:10.1111/apt.13904
更新日期:2017-03-01 00:00:00
abstract:BACKGROUND:Psychiatric side-effects may require dose reduction or premature discontinuation of interferon therapy in chronic hepatitis C. New strategies are needed in order to prevent the premature termination of interferon therapy. AIM:To evaluate prospectively the efficacy and tolerability of antidepressant therapy ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1046/j.1365-2036.2002.01265.x
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:Allergy and immune dysregulation may have a role in the pathophysiology of recurrent abdominal pain of functional origin, but previous studies of allergy-related diseases and abdominal pain have contradictory results. AIM:To examine the association between allergy-related diseases or sensitisation during ch...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.12965
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:Dramatic changes in the prevalence and pattern of gastrointestinal disease has taken place in Asia in recent years. AIM:To compare the prevalence of duodenal (DU) and gastric ulcers (GU), erosive oesophagitis (EO), gastric cancer (GCA) and oesophageal cancer (OCA) and Helicobacter pylori infection over a 10...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2009.03930.x
更新日期:2009-04-01 00:00:00