Abstract:
AIM:To investigate whether ANNs and LDA could recognize patients with ABG in a database, containing only clinical and biochemical variables, of a pool of patients with and without ABG, by selecting the most predictive variables and by reducing input data to the minimum. METHODS:Data was collected from 350 consecutive outpatients (263 with ABG, 87 with non-atrophic gastritis and/or celiac disease [controls]). Structured questionnaires with 22 items (anagraphic, anamnestic, clinical, and biochemical data) were filled out for each patient. All patients underwent gastroscopy with biopsies. ANNs and LDA were applied to recognize patients with ABG. Experiment 1: random selection on 37 variables, experiment 2: optimization process on 30 variables, experiment 3: input data reduction on 8 variables, experiment 4: use of only clinical input data on 5 variables, and experiment 5: use of only serological variables. RESULTS:In experiment 1, overall accuracies of ANNs and LDA were 96.6% and 94.6%, respectively, for predicting patients with ABG. In experiment 2, ANNs and LDA reached an overall accuracy of 98.8% and 96.8%, respectively. In experiment 3, overall accuracy of ANNs was 98.4%. In experiment 4, overall accuracies of ANNs and LDA were, respectively, 91.3% and 88.6%. In experiment 5, overall accuracies of ANNs and LDA were, respectively, 97.7% and 94.5%. CONCLUSION:This preliminary study suggests that advanced statistical methods, not only ANNs, but also LDA, may contribute to better address bioptic sampling during gastroscopy in a subset of patients in whom ABG may be suspected on the basis of aspecific gastrointestinal symptoms or non-digestive disorders.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Lahner E,Grossi E,Intraligi M,Buscema M,Corleto VD,Delle Fave G,Annibale Bdoi
10.3748/wjg.v11.i37.5867keywords:
subject
Has Abstractpub_date
2005-10-07 00:00:00pages
5867-73issue
37eissn
1007-9327issn
2219-2840journal_volume
11pub_type
杂志文章abstract:AIM:To detect high risk patients with a progressive disease course of ulcerative colitis (UC) requiring immunosuppressive therapy (IT). METHODS:A retrospective, multicenter analysis of 262 UC patients from eight German tertiary inflammatory bowel disease centres was performed. Patients were divided into two groups dep...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,多中心研究
doi:10.3748/wjg.v20.i35.12574
更新日期:2014-09-21 00:00:00
abstract:AIM:To compare the clinical outcomes between jejunal interposition reconstruction and Roux-en-Y anastomosis after total gastrostomy in patients with gastric cancer. METHODS:A systematic literature search was conducted by two independent researchers on PubMed, EMBASE, the Cochrane Library, Google Scholar, and other Eng...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
doi:10.3748/wjg.v21.i10.3093
更新日期:2015-03-14 00:00:00
abstract:AIM:To detect the prevalence of small bowel polyps by wireless capsule endoscopy (WCE) in patients with familial adenomatous polyposis (FAP). METHODS:We examined prospectively 14 patients with FAP to assess the location, size and number of small-intestinal polyps. Patients' age, sex, years of observation after surgery...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.3748/wjg.15.6075
更新日期:2009-12-28 00:00:00
abstract:AIM:To elucidate the role and alterations of syndecan-1 and E-cadherin expression in different cellular phenotypes of differentiated-type gastric cancers (DGCs). METHODS:A total of 120 DGCs at an early stage, and their adjacent mucosa, were studied both by immunohistochemistry. Syndecan-1 and E-cadherin were assessed ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i19.2975
更新日期:2005-05-21 00:00:00
abstract:AIM:To investigate the mucosal protective effect and the mechanisms of action of the anti-ulcer drug irsogladine maleate in gastric injury induced by indomethacin in rats. METHODS:Gastric mucosal injury was induced in male Hos:Donryu rats by oral administration of indomethacin at a dose of 48 mg/kg. One hour before in...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.4784
更新日期:2008-08-14 00:00:00
abstract:AIM:To study the effect of aprotinin used in orthotopic liver transplantation (OLT) on the intraoperative requirement for blood products and on the incidence of laparotomy for bleeding, thrombotic events and mortality. METHODS:A systematic review of the literature in the electronic database Medline and the Clinic Tria...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
doi:10.3748/wjg.14.1425
更新日期:2008-03-07 00:00:00
abstract::Occult hepatitis B virus (HBV) infection (OBI), alternatively defined as occult hepatitis B (OHB), is a challenging clinical entity. It is recognized by two main characteristics: absence of HBsAg, and low viral replication. The previous two decades have witnessed a remarkable progress in our understanding of OBI and i...
journal_title:World journal of gastroenterology
pub_type: 社论,评审
doi:10.3748/wjg.v17.i15.1927
更新日期:2011-04-21 00:00:00
abstract::Treatment of Helicobacter pylori (H. pylori) infection is paramount for the management of prevalent gastrointestinal disorders including peptic ulcer disease and gastric cancer. Due to the wide increase in prevalence of H. pylori resistance to antibiotics, clarithromycin-based triple therapies are not any more suitabl...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i29.9898
更新日期:2014-08-07 00:00:00
abstract::Malignant gastrointestinal stromal tumors (GIST) are rare mesenchymal tumors originating from the wall of the gastrointestinal tract. Their coexistence with other tumors originating from other germ layers is unique. We have reported a case of a 63-year-old GIST patient presenting as an epigastric mass associated with ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i4.665
更新日期:2006-01-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i27.4380
更新日期:2013-07-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.2748
更新日期:2008-05-07 00:00:00
abstract:AIM:To investigate the role of neoadjuvant chemoradiotherapy in prognosis and surgery for esophageal carcinoma by a meta-analysis. METHODS:PubMed and manual searches were done to identify all published randomized controlled trials (RCTs) that compared neoadjuvant chemoradiotherapy plus surgery (CRTS) with surgery alon...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
doi:10.3748/wjg.15.4962
更新日期:2009-10-21 00:00:00
abstract:AIM:To evaluate prospectively usefulness of fecal lactoferrin (Lf) and fecal hemoglobin (Hb) in the diagnosis of colorectal diseases. METHODS:Fecal Lf and Hb were measured using ELISA in 872 patients before they underwent colorectal endoscopy. RESULTS:Lf was positive in 18 (50%) of 36 patients with colorectal cancer,...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.3748/wjg.v13.i10.1569
更新日期:2007-03-14 00:00:00
abstract:AIM:To evaluate the effects of combined radiofrequency ablation and transcatheter arterial embolization with iodized oil on ablation time, maximum output, coagulation diameter, and portal angiography in a porcine liver model. METHODS:Radiofrequency ablation (RFA) was applied to in vivo livers of 10 normal pigs using a...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i20.2841
更新日期:2007-05-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v21.i11.3394
更新日期:2015-03-21 00:00:00
abstract:AIM:To understand the role of toll-like receptor 4 (TLR4) signaling in the regulation of iron-regulatory hormone, hepcidin by chronic alcohol consumption. METHODS:For chronic alcohol intake studies, TLR4 mutant mice on C3H/HeJ background and wildtype counterpart on C3H/HeOuJ background were pair-fed with regular (cont...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v20.i34.12161
更新日期:2014-09-14 00:00:00
abstract:AIM:To assess the effectiveness of pancreatic stents for preventing pancreatitis in high-risk patients after endoscopic retrograde cholangiopancreatography (ERCP). METHODS:PubMed, Embase, Science Citation Index, and Cochrane Controlled Trials Register were searched to identify relevant trials published in English. Inc...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
doi:10.3748/wjg.v20.i22.7040
更新日期:2014-06-14 00:00:00
abstract:AIM:To investigate the effects of exogenous melatonin on bacterial translocation and apoptosis in a rat ulcerative colitis model. METHODS:Rats were randomly assigned to three groups: group I: control, group II: experimental colitis, group III: colitis plus melatonin treatment. On d 11 after colitis, plasma tumor necro...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.918
更新日期:2008-02-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v10.i10.1495
更新日期:2004-05-15 00:00:00
abstract::Acute hepatic failure due to hepatitis B virus (HBV) can occur both during primary infection as well as after reactivation of chronic infection. Guidelines recommend considering antiviral therapy in both situations, although evidence supporting this recommendation is weak. Since HBV is not directly cytopathic, the mec...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v21.i7.2214
更新日期:2015-02-21 00:00:00
abstract:AIM:To investigate the expression of tumor suppressor gene p27 and spindle checkpoint gene Mad2 and to demonstrate their expression difference in colorectal cancer and normal mucosa and to evaluate its clinical significance. METHODS:Immunohistochemical staining was used for detection of expression of Mad2 and p27 in c...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v10.i21.3218
更新日期:2004-11-01 00:00:00
abstract:AIM:To evaluate the efficacy of amantadine plus interferon-alpha and ribavirin in non-responder patients with chronic hepatitis C. METHODS:Twenty-six non-responder patients received the regimen of IFN-alpha-2a at a dose of 6 million units three times a week, 1 000-1 200 mg of ribavirin daily, and 200 mg of amantadine ...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.3748/wjg.v11.i4.580
更新日期:2005-01-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i14.2195
更新日期:2006-04-14 00:00:00
abstract::Hepatocellular carcinoma (HCC) is the sixth most common cancer worldwide and leading cause of death among patients with cirrhosis. Treatment guidelines are based according to the Barcelona Clinic Liver Cancer staging system. The choice among therapeutic options that include liver resection, liver transplantation, loco...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i30.10223
更新日期:2014-08-14 00:00:00
abstract::Hepatocellular carcinoma (HCC) is one of the major causes of morbidity and mortality in patients with chronic liver disease. Transarterial chemoembolization (TACE) can significantly improve the survival rate of patients with HCC and is the first treatment choice for patients who are not suitable for surgical resection...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v22.i20.4835
更新日期:2016-05-28 00:00:00
abstract::While conservative management such as fluid, bowel rest, and antibiotics is the mainstay of current acute pancreatitis management, there is a lot of promise in pharmacologic therapies that target various aspects of the pathogenesis of pancreatitis. Extensive review of preclinical studies, which include assessment of t...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i45.16868
更新日期:2014-12-07 00:00:00
abstract:AIM:To retrospectively evaluate the vaccination-induced anti-HBs seroconversion rates in treatment-naive and treatment-experienced chronic hepatitis C (CHC) patients. Also to prospectively evaluate the seroconversion rates in CHC patients during pegylated interferon (PEG) plus ribavirin (RIB) treatment. METHODS:Sevent...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.3748/wjg.v12.i27.4420
更新日期:2006-07-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type:
doi:10.3748/wjg.v26.i29.4372
更新日期:2020-08-07 00:00:00
abstract::A 66-year-old woman underwent partial splenic embolization (PSE) for hypersplenism with idiopathic portal hypertension (IPH). One week later, contrast-enhanced CT revealed extensive portal vein thrombosis (PVT) and dilated portosystemic shunts. The PVT was not dissolved by the intravenous administration of urokinase. ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i31.5071
更新日期:2006-08-21 00:00:00
abstract:BACKGROUND:Laparoscopy has been widely used in general surgical procedures, but total laparoscopic pancreaticoduodenectomy (TLPD) is still a complex and challenging surgery that is only performed in a small number of patients at a few large academic medical centers. Although the safety and feasibility of TLPD have been...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析
doi:10.3748/wjg.v25.i37.5711
更新日期:2019-10-07 00:00:00