Abstract:
:Prostaglandins (PGs) are products of polyunsaturated acid metabolism, particularly arachidonic acid (AA) released from membrane phospholipids by the action of phospholipase A2 in response to a variety of physical, chemical, and neurohormonal factors. AA is rapidly metabolized to oxygenated products by two distinct enzymatic pathways: cyclooxygenase and lipoxygenase. The intermediate cyclooxygenase products are converted to primary PGs, while the lipoxygenase products are converted to leukotrienes. The generation of various cyclooxygenase products varies from tissue to tissue. Aspirin and related antiinflammatory drugs reduce tissue biosynthesis of all cyclooxygenase products; their therapeutic effects and side effects parallel the inhibition of cyclooxygenase. Exogenous PGs exhibit a broad spectrum of effects. PGs of the E series and PGI2 are generated by the endothelium and the vessel wall to maintain the microcirculation and to counteract the vasoconstrictive and proaggregatory actions of thromboxane A2 (TXA2). Exogenous PGs of the E and I series are potent vasodilators in various vascular beds, and result in decreased systemic blood pressure and reflex stimulation of heart rate. PGEs and PGI2 increase renal blood flow and provoke diuresis and natriuresis, partly by modulating the renin-angiotensin-aldosterone system. PGFs contract the bronchial and gut muscle, while PGEs and PGI2 have opposite effects. PGEs and PGFs, but not PGI2, cause a strong contraction of the uterine muscle, hence their undesirable uterotonic effects. PGEs relax bronchial muscle, whereas PGFs cause bronchoconstriction; their imbalance may contribute to the high bronchial tone in bronchial asthma. PGs of the E and I series and TXA2 are generated by the gastrointestinal mucosa and released into the lumen upon neural or hormonal stimulation; they probably participate in the maintenance of mucosal integrity and microcirculation. Exogenous PGs of the E and I series inhibit gastric acid secretion and stimulate alkaline secretion while increasing mucosal blood flow. All PGs, including those noninhibitory for acid secretion, are cytoprotective against various ulcerogens and necrotizing agents. The classic PGs constitute only a small fraction of biologically active products of AA metabolism, and recent studies on the lipoxygenase products emphasize their biological activity and involvement in a variety of pathological conditions.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Konturek SJ,Pawlik Wdoi
10.1007/BF01309317subject
Has Abstractpub_date
1986-02-01 00:00:00pages
6S-19Sissue
2 Suppleissn
0163-2116issn
1573-2568journal_volume
31pub_type
杂志文章,评审abstract::Technological developments have greatly promoted interest in the use of computer systems for recording findings and images at endoscopy and creating databases. The aim of this study was to develop a comprehensive WHO-approved code system for gastrointestinal endoscopic terminology. The International Classification of ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-006-9272-4
更新日期:2007-04-01 00:00:00
abstract::Lafutidine, a histamine H2-receptor antagonist, exhibits gastric mucosal protective action mediated by capsaicin-sensitive afferent neurons, in addition to a potent antisecretory effect. In this study we examined the effect of lafutidine on dextran sulfate Na (DSS)-induced ulcerative colitis in rats, in relation to ca...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/b:ddas.0000043389.96490.76
更新日期:2004-10-01 00:00:00
abstract:BACKGROUND:Relative adrenal insufficiency (RAI) is frequently observed in patients with cirrhosis. We sought to identify evidence in the literature regarding the impact of RAI on clinical outcomes in cirrhotic patients. METHODS:We conducted a systematic review (SR) and meta-analysis (MA) using the Ovid-MEDLINE, EMBASE...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s10620-017-4471-8
更新日期:2017-04-01 00:00:00
abstract::It has been shown that acupuncture relieves symptoms of abdominal pain and bloating in patients with irritable bowel syndrome (IBS). However, the mechanism of beneficial effects of acupuncture still remains unproven. The aim of the present study was to investigate the mechanisms of the antinociceptive effects of acupu...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-005-2770-y
更新日期:2005-07-01 00:00:00
abstract::Misoprostol, a synthetic prostaglandin E1 methyl ester analog with gastric antisecretory and cytoprotective properties, prevents the development of acute experimental gastric and duodenal ulcers in various animal models. This study was designed as a multicenter randomized double-blind parallel-group comparison of the ...
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/BF01309404
更新日期:1985-11-01 00:00:00
abstract:BACKGROUND:Fibromyalgia (FM) is a disorder characterized by widespread chronic pain as core symptom and a broad range of comorbidities. Despite the prevalence of gastrointestinal (GI) comorbidities in patients with FM, GI functions have rarely been investigated in animal models of FM. AIMS:The purpose of the present s...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-019-05577-8
更新日期:2019-09-01 00:00:00
abstract:BACKGROUND:Microscopic colitis typically presents with chronic watery nonbloody diarrhea with normal endoscopy findings but abnormal inflammatory histopathological findings. As it is mainly a condition of the elderly, pediatric data is scarce. AIMS:To describe and characterize children with microscopic colitis. METHO...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-009-0964-4
更新日期:2010-07-01 00:00:00
abstract::To test the role of immune reactivity in the pathogenesis of hepatitis C, serum soluble immune factors were measured in a cohort of 57 patients with chronic hepatitis C, and in 20 healthy subjects. Levels of interleukin-1 beta, granulocyte-macrophage colony-stimulating factor, tumor necrosis factor-alpha, and interleu...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF02087671
更新日期:1994-11-01 00:00:00
abstract::Modafinil may be a potentially effective treatment for primary biliary cirrhosis (PBC)-related fatigue. About 42 patients were given a 3-day trial of 100-200 mg modafinil. Response was defined as increased energy, decreased somnolence and sleep requirements, and improved daily function. Patients with positive response...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-008-0613-3
更新日期:2009-10-01 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::The authors have developed a primate model for evaluating cytoprotection against alcohol-induced injury in gastric mucosa pretreated with antiulcer agents. In the present study, groups of squirrel monkeys received either a single oral dose of misoprostol (500 or 200 micrograms/kg), cimetidine (3 or 6 mg/kg), placebo, ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01309333
更新日期:1986-02-01 00:00:00
abstract:AIM:To investigate whether a diagnostic delay is associated with a poor outcome in Crohn's disease (CD). METHODS:Medical and socioeconomic characteristics as well as medications and need for surgery of consecutive CD adults patients followed in three referral centers were prospectively recorded using an electronic dat...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-016-4189-z
更新日期:2016-11-01 00:00:00
abstract:BACKGROUND AND AIM:Upper gastrointestinal (UGI) symptoms are common; however, the role of Helicobacter pylori and gastric corpus atrophy in the generation of these symptoms is controversial. The aim of this study was to determine the risk factors for UGI symptoms in adults in an endemic area of H. pylori infection. ME...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-017-4529-7
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Patients with cirrhosis are at high readmission risk. Using a large statewide database, we evaluated the effect of hospital cirrhosis-related patient volume on 30-day readmissions in patients with cirrhosis. METHODS:We conducted a retrospective study of the Healthcare Cost and Utilization Project State Inpa...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-018-4964-0
更新日期:2018-09-01 00:00:00
abstract::The gold standard for measuring gastric emptying is scintigraphy, either with digestible solids or liquids. Unfortunately, this method is expensive and of limited availability. An alternative could be to use radiopaque markers (ROMs). Our aim was to compare these two tests in healthy volunteers and in patients to see ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1026609808495
更新日期:1999-04-01 00:00:00
abstract:INTRODUCTION:Scant data exist about accidental occupational injuries in endoscopy suites. This work systematically analyzes injuries, identifies workplace hazards, and proposes hazard remediation to potentially reduce risks. METHODS:A retrospective study was performed on 14 previously unreported injuries among 120 end...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-010-1498-5
更新日期:2011-02-01 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:BACKGROUND/AIM:Transarterial chemoembolization (TACE) is the recommended treatment for patients with Barcelona stage B hepatocellular carcinoma; however, community practice varies from these American Association for the Study of Liver Diseases guidelines. In this study, we sought to assess factors determining outcome a...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-014-3247-7
更新日期:2014-11-01 00:00:00
abstract::Rectally administered suspensions of 5-aminosalicylic acid (5-ASA) are topically effective in treating left-sided ulcerative colitis. The extent to which the contents of these enemas are distributed to inflamed mucosal linings has not previously been determined. This study was undertaken to validate a technique for la...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01540060
更新日期:1989-11-01 00:00:00
abstract:BACKGROUND AND AIMS:Traditional endoscopic management of benign biliary strictures (BBS) consists of placement of one or more plastic stents. Emerging data support the use of covered self-expandable metal stents (CSEMS). We sought to assess outcome of endoscopic temporary placement of CSEMS in patients with BBS. METHO...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-013-2859-7
更新日期:2014-01-01 00:00:00
abstract::Microvesicular steatosis is a potentially severe manifestation of valproic acid hepatotoxicity due to an acquired impairment of mitochondrial function. Tests currently used to investigate mitochondrial fonction are cumbersome and cannot be used routinely. We report on a noninvasive breath test using [13C]methionine fo...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1012791832730
更新日期:2001-12-01 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:BACKGROUND:Nonalcoholic fatty liver disease (NAFLD) is now recognized as a leading cause of liver dysfunction. Gastroesophageal reflux disease (GERD) is a common disorder causing symptoms that often impair patients' quality of life. In recent years, the prevalence of both these diseases has increased, partially overlap...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-014-3113-7
更新日期:2014-08-01 00:00:00
abstract::We present six cases of cancer associated with Crohn's disease and stress the importance of the earlier age of onset than spontaneously arising small-bowel carcinoma, the long period of latency from the time of diagnosis of Crohn's disease to that of carcinoma, and the generally poor prognosis. We emphasize, furthermo...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01308045
更新日期:1980-12-01 00:00:00
abstract::There is A paucity of data on racial differences in epidemiology of irritable bowel syndrome (IBS) alone and un-investigated dyspepsia (UD) alone compared to "overlap syndrome" (OS). We conducted a random survey (n = 990). Subjects completed a questionnaire which included Rome II criteria for IBS and functional dyspep...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-006-3112-4
更新日期:2006-01-01 00:00:00
abstract::This study was undertaken to determine whether the synthetic prostaglandin E2 analog enprostil is able to inhibit basal and postprandial hypergastrinemia induced by omeprazole. We also studied the effect of omeprazole, enprostil, and the combination of both drugs on serum pepsinogen A and C levels. Eight normal subjec...
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/BF02088350
更新日期:1994-03-01 00:00:00
abstract::Our objective was to determine whether there are dominating racial differences in patient preferences for surgery that may explain the disparities in proctocolectomy utilization between African Americans (AA) and whites. We used the time trade-off technique to measure health preferences for undergoing ileal pouch anal...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-007-9915-0
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND:Eosinophilic esophagitis (EoE) is defined by a minimum of 15 eosinophils (eos) per high-powered field (HPF) on esophageal biopsy, along with esophageal symptoms and the exclusion of gastroesophageal reflux (GERD). The clinical significance of fewer eosinophils is unknown. METHODS:Fifty-nine adult patients w...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-011-1594-1
更新日期:2011-07-01 00:00:00
abstract:BACKGROUND:The renin-angiotensin system (RAS) is activated in inflammatory bowel disease (IBD), and vitamin D deficiency aggravates the development of colitis, but the relationship between the local colonic RAS and vitamin D is unclear with regard to the pathogenesis of IBD. AIMS:To investigate whether vitamin D suppr...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-020-06713-5
更新日期:2021-01-12 00:00:00
abstract:BACKGROUND:Average-risk women aged 50-59 years have a lower incidence and mortality of colorectal cancer relative to age-matched men, calling into question the benefit of screening colonoscopy in this age group. AIMS:We aimed to determine whether FOBT is an effective initial screening test in 50-59-year-old women. ME...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-018-5156-7
更新日期:2018-10-01 00:00:00