Abstract:
BACKGROUND:The therapeutic efficacy of 5-aminosalicylic acid in inflammatory bowel disease may be related to its antioxidant properties. AIM:To compare in vitro the antioxidant effects of conventional drugs (5-aminosalicylic acid, corticosteroids, metronidazole), with new aminosalicylates (4-aminosalicylic acid, balsalazide) and other potential therapies (ascorbate, N-acetylcysteine, glutathione, verapamil). METHODS:Compounds were assessed for efficacy in reducing the in vitro production of reactive oxygen species by cell-free systems (using xanthine/xanthine oxidase, with or without myeloperoxidase) and by colorectal biopsies from patients with ulcerative colitis using luminol-amplified chemiluminescence. RESULTS:5-aminosalicylic acid and balsalazide were more potent antioxidants than 4-aminosalicylic acid or N-acetyl-5-aminosalicylic acid in cell-free systems. 5-aminosalicylic acid (20 mM) and balsalazide (20 mM) inhibited rectal biopsy chemiluminescence by 93% and 100%, respectively, compared with only 59% inhibition by 4-aminosalicylic acid (20 mM). Hydrocortisone, metronidazole and verapamil had no significant effect on chemiluminescence in any system. Ascorbate (20 mM) inhibited chemiluminescence by 100% in cell-free systems and by 60% in rectal biopsies. N-acetyl cysteine (10 mM), and both oxidized and reduced glutathione (10 mM), completely inhibited chemiluminescence in cell-free systems, but not with rectal biopsies. CONCLUSIONS:The antioxidant effects of compounds varies between cell-free systems and inflamed colorectal biopsies. The effect of drugs on the chemiluminescence produced by these two assay systems is useful for screening potentially new antioxidant treatments for inflammatory bowel disease. Ascorbate seems worth further study as a novel therapy.
journal_name
Aliment Pharmacol Therjournal_title
Alimentary pharmacology & therapeuticsauthors
Simmonds NJ,Millar AD,Blake DR,Rampton DSdoi
10.1046/j.1365-2036.1999.00484.xsubject
Has Abstractpub_date
1999-03-01 00:00:00pages
363-72issue
3eissn
0269-2813issn
1365-2036journal_volume
13pub_type
杂志文章abstract:BACKGROUND:The gastric juice concentration of vitamin C is reduced in subjects with elevated intragastric pH. This is probably because of the fact that the vitamin is unstable at non-acidic pH and undergoes irreversible denaturation. AIM:To determine whether elevation of intragastric pH reduces the bioavailability of ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章
doi:10.1111/j.1365-2036.2005.02568.x
更新日期:2005-09-15 00:00:00
abstract::The choice of medical therapies for Crohn's disease continues to grow. Although our understanding of the mechanisms of the disease is incomplete, increasing knowledge of the pathogenesis of inflammation in general and Crohn's disease in particular allows targeting of therapies at various points in the immunoinflammato...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2036.1996.tb00173.x
更新日期:1996-02-01 00:00:00
abstract:BACKGROUND:The nonselective 5-HT(4) receptor agonists, cisapride and tegaserod have been associated with cardiovascular adverse events (AEs). AIM:To perform a systematic review of the safety profile, particularly cardiovascular, of 5-HT(4) agonists developed for gastrointestinal disorders, and a nonsystematic summary ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2036.2012.05011.x
更新日期:2012-04-01 00:00:00
abstract:BACKGROUND:Treatment options for non-alcoholic steatohepatitis (NASH) are limited. Weight loss remains the most recommended therapy. Orlistat is an effective adjunct to dietary weight loss therapy. AIM:To evaluate the efficacy of orlistat, given for 6 months to patients with obesity and biopsy confirmed NASH. METHODS...
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.1365-2036.2004.02153.x
更新日期:2004-09-15 00:00:00
abstract:BACKGROUND:Clostridium difficile can cause severe antibiotic-associated colitis. Conventional treatments with metronidazole and vancomycin improve symptoms, but after discontinuation of treatment, C. difficile infection (CDI) recurs in a number of patients. Rifaximin is a rifamycin-based non-systemic antibiotic that ha...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.12111
更新日期:2013-01-01 00:00:00
abstract:BACKGROUND:Recent studies in adults have shown that polymeric (whole protein) diets are as effective as semi-elemental and elemental formulae for the induction of remission in small bowel Crohn's disease. Whole protein diets are more palatable and cheaper. There have been no studies confirming efficacy in children. PA...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.1994.tb00338.x
更新日期:1994-12-01 00:00:00
abstract:BACKGROUND:Hepatitis C virus (HCV) genotype 6 is common among patients from Southeast Asia and the surrounding regions, where HCV prevalence is also high. HCV genotype 6 has great genetic diversity and different response to antiviral therapy compared with the more commonly known genotype 1. AIM:Our goal was to provide...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2036.2011.04714.x
更新日期:2011-08-01 00:00:00
abstract:BACKGROUND:Cirrhotic patients with spontaneous bacterial peritonitis (SBP) have elevated rates of renal impairment and mortality. It has been shown that cefotaxime plus albumin infusion decrease renal impairment compared with antibiotic treatment alone, in patients with serum bilirubin >4 mg/dL or creatinine >1 mg/dL. ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2010.04309.x
更新日期:2010-07-01 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:BACKGROUND:Common risk factors exist in colorectal neoplasia (cancer or adenoma) and coronary artery disease. AIM:To investigate in a retrospective study if there is coexistence of the two events in patients > OR =50 years. METHODS:Computer data on colonoscopies performed on symptomatic patients, the corresponding me...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2006.02958.x
更新日期:2006-08-01 00:00:00
abstract:BACKGROUND:Optimal management approach is not well defined for subjects who fail initial first- and second-line Helicobacter pylori eradication attempts and are dealt on a case-by-case basis by the specialists. AIM:To evaluate the efficacy and safety of standard and 'rescue' eradication therapies at primary and second...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2004.02210.x
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND:Transjugular intrahepatic portosystemic stent shunts (TIPSS) have been used successfully to reduce portal pressure in the context of variceal haemorrhage. Recent interest has focused on the possible use of TIPSS to manage refractory ascites. AIM:To study the effect of TIPSS insertion in 18 patients with ref...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1046/j.1365-2036.1996.60202000.x
更新日期:1996-10-01 00:00:00
abstract::Beta adrenoreceptor blocking drugs have been used for the prevention of haemorrhage from oesophageal varices. However, it is possible that these agents, by virtue of their effects on hepatic blood flow, may impair liver function and precipitate hepatic encephalopathy. We have therefore studied the effect of the beta b...
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.tb00681.x
更新日期:1988-04-01 00:00:00
abstract::Faecal impaction with or without encopresis is a very common problem. We performed a randomized, open-label, prospective study to compare the efficacy and acceptability of the treatment of faecal impaction using either mineral oil or pineapple-flavoured isotonic intestinal lavage solution containing polyethylene glyco...
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.1365-2036.1993.tb00128.x
更新日期:1993-10-01 00:00:00
abstract:BACKGROUND:Helicobacter pylori infection has been implicated as a possible cause of extraintestinal disorders such as skin diseases. A number of case reports describe patients with skin diseases, such as prurigo nodularis, that are associated with gastric cancer. AIM:The aim of this study was to examine the prevalence...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2004.01977.x
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND:The use of healthcare resources for the management of constipation is not well-known. AIM:To analyse healthcare seeking for constipation, defined by three different criteria, and its related factors and to assess the frequency of use of laxatives, suppositories and enemas for the treatment of constipation. ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2006.02981.x
更新日期:2006-07-15 00:00:00
abstract:AIM:To review evidence for the effectiveness of Lactobacillus GG (LGG) in treating acute infectious diarrhoea in children. METHODS:The following electronic databases were searched through August 2006 for studies relevant to acute infectious diarrhoea and LGG: MEDLINE, EMBASE, CINAHL and The Cochrane Library; additiona...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,meta分析,评审
doi:10.1111/j.1365-2036.2007.03282.x
更新日期:2007-04-15 00:00:00
abstract:BACKGROUND:Non-steroidal anti-inflammatory drugs (NSAIDs) can cause serious gastrointestinal side effects. Faecal calprotectin assay represents a simple and practical method for diagnosis of NSAID enteropathy. Intestinal micro-organisms are necessary for the development of NSAID-induced small bowel lesions and hence it...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2036.2010.04324.x
更新日期:2010-07-01 00:00:00
abstract:AIM:To evaluate the Helicobacter pylori stool antigen (HpSA) test in the assessment of H. pylori infection and the effect of omeprazole treatment on its accuracy. METHODS:Study 1: 140 dyspeptic patients were enrolled in the study and defined as H. pylori positive if histology and rapid urease test, or culture alone 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.1365-2036.2001.00907.x
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:It has been shown that azathioprine prolongs the response to ciclosporin of steroid-refractory ulcerative colitis, but no specific data are available concerning its toxicity in this indication. AIM AND METHODS:The charts of 21 patients with steroid-refractory ulcerative colitis who received azathioprine ove...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1046/j.1365-2036.2001.01019.x
更新日期:2001-09-01 00:00:00
abstract::Alginate-based raft-forming formulations have been marketed word-wide for over 30 years under various brand names, including Gaviscon. They are used for the symptomatic treatment of heartburn and oesophagitis, and appear to act by a unique mechanism which differs from that of traditional antacids. In the presence of g...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1046/j.1365-2036.2000.00759.x
更新日期:2000-06-01 00:00:00
abstract:BACKGROUND:Spontaneous portosystemic shunt (SPSS) is a frequent cause of recurrent hepatic encephalopathy (HE) in patients with cirrhosis. AIM:To assess the effectiveness and optimal candidate selection for embolisation of SPSS, for the treatment of recurrent HE in patients with cirrhosis. METHODS:This retrospective ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.12771
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND:Lacking an objective 'gold standard' for diagnosing dyspepsia, several symptom-based classifications have been suggested. AIM:To assess if response to proton-pump inhibitor treatment could provide useful information for current or future dyspepsia classification. METHODS:Post hoc analyses of 829 patients t...
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.1365-2036.2004.02243.x
更新日期:2004-11-15 00:00:00
abstract:BACKGROUND:Drug toxicity is a well-known cause of acute pancreatitis (AP). Although many drugs have been associated with AP, the magnitude of the risk of most of them remains largely unknown. AIM:To determine the pancreatotoxic risk of a wide range of drugs. METHODS:The hospital-based Berlin case-control surveillance...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.12461
更新日期:2013-10-01 00:00:00
abstract:BACKGROUND:Chronic continuous abdominal pain (CCAP) is characteristic of centrally mediated gastrointestinal pain disorders. It consumes significant healthcare resources yet is poorly understood, with minimal cohort-specific data in the literature. AIMS:To examine in a large cohort of CCAP patients, (a) diagnostic fea...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.15241
更新日期:2019-05-01 00:00:00
abstract:BACKGROUND:Increased risk of cardiovascular and cerebrovascular disease in liver transplant recipients results in particular from the side effects of calcineurin inhibitor-based immunosuppressive therapy. Several studies have demonstrated a more favourable outcome for patients receiving tacrolimus (TAC) as compared wit...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/j.1365-2036.2009.04099.x
更新日期:2009-10-15 00:00:00
abstract:BACKGROUND:Bismuth compounds prevent gastric injury from the short-term administration of nonsteroidal anti-inflammatory drugs. We studied the mechanisms underlying the gastroprotective actions of bismuth subsalicylate against indomethacin-induced injury in rats. METHODS:An in vivo microscopic technique was used in wh...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1046/j.1365-2036.1997.00170.x
更新日期:1997-06-01 00:00:00
abstract:BACKGROUND:Grey Zone (GZ) is an ill-defined situation including patients falling between inactive carrier (IC) state and HBeAg-negative chronic hepatitis B (HBeAg-negative CHB). AIMS:To assess the long-term outcomes of GZ patients compared to IC in the absence of treatment. METHODS:Retrospective analysis of 287 IC an...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.14613
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:Despite the close relationship between primary sclerosing cholangitis (PSC) and inflammatory bowel disease (IBD), the association between colectomy and the prognosis of PSC remains controversial. AIM:To explore whether colectomy prior to PSC-diagnosis is associated with transplant-free survival. METHODS:A ...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
doi:10.1111/apt.14393
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:A simulated upper gastrointestinal (UGI) bleed in cirrhotic patients has been shown to induce hyperammonaemia. The kidney was the site of this exaggerated ammoniagenesis with alanine as substrate. Administration of alanine to decompensated cirrhotic patients did not change hepatic gluconeogenesis, but result...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2036.2012.05044.x
更新日期:2012-04-01 00:00:00