Abstract:
:The present study aims to identify differences between left and right colon adenocarcinoma arising from identical clonal cell and to find out if microenvironment has any influence on matrix metalloproteinase-2 (MMP2), p53 and β-catenin tumor expressions. MATERIAL AND METHODS. Rats (RNU) were submitted to cecostomy to obtain the orthotopic model of right colon tumor (n = 10), while for the left colon model (n = 10), a colon diversion and distal mucous fistula in the descending colon was used. Cultivated human colon adenocarcinoma cells (WiDr) were inoculated in stomas submucosa. Histopathological analysis, real-time reverse transcription-PCR for β-catenin, p53 and MMP2, as well as immunohistochemical analysis for p53 and β-catenin expression were conducted. Central tendency, variance analysis and the Livak delta-delta-CT method were used for statistical analysis, adopting a 5% significance level. RESULTS. All tumors from the left colon exhibited infiltrative ulceration, while in the right colon tumor growth was predominantly exophytic (67%). In the left colon, tumor growth was undifferentiated (100%), while it was moderately differentiated in the right colon (83%). In right colon tumors, MMP2, p53, and β-catenin gene expressions were higher than compared to left colon (p = 4.59354E-05, p = 0.0035179, p = 0.00093798, respectively, for MMP2, p53 and β-catenin). β-catenin and p53 results obtained by real-time polymerase chain reaction were confirmed by immunohistochemistry assay (p = 0.01 and p = 0.001, respectively, for β-catenin and p53). CONCLUSION. Left and right human colon adenocarcinomas developed in animal models have distinct phenotypes even when they have the same clonal origin. Microenvironment has influenced p53, β-catenin, and MMP2 expression in animal models of colon cancer.
journal_name
Scand J Gastroenteroljournal_title
Scandinavian journal of gastroenterologyauthors
Priolli DG,Abrantes AM,Neves S,Gonçalves AC,Lopes CO,Martinez NP,Cardinalli IA,Ribeiro AB,Botelho MFdoi
10.3109/00365521.2013.869350subject
Has Abstractpub_date
2014-03-01 00:00:00pages
309-16issue
3eissn
0036-5521issn
1502-7708journal_volume
49pub_type
杂志文章abstract:OBJECTIVE:To report on survival and complications after insertion of self-expandable stents in patients with malignant oesophageal stenosis. MATERIAL AND METHODS:Data were gathered retrospectively from the medical records of 92 consecutive patients in the period 1994-2003. The study comprised 68 men and 24 women (medi...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520500206350
更新日期:2006-03-01 00:00:00
abstract:OBJECTIVES:Up to date we lack a detailed description of the colorectal endoscopic submucosal dissection (ESD) learning curve, that would represent the experience of the Western center. The aim of this study was to define the critical points of the learning curve and to draw up lesions qualification guidelines tailored ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章,多中心研究
doi:10.1080/00365521.2017.1379557
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND:Zinc (Zn) is protective and enhances epithelial repair in gut diseases. In this study we investigate the localization and distribution of Zn and its binding protein, metallothionein (MT), in the gut of rats fed diets varying in Zn content. METHODS:Male-Sprague Dawley rats were fed low, normal, high, or exce...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/003655299750025895
更新日期:1999-07-01 00:00:00
abstract:INTRODUCTION:Immunosuppression, the cornerstone of management of Crohn's disease (CD) and ulcerative colitis (UC) (inflammatory bowel diseases; IBD) is associated with an increased risk of serious infections that is inadequately predicted by clinical risk factors. The role of genetics in determining susceptibility to i...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365521.2017.1286381
更新日期:2017-05-01 00:00:00
abstract::Simultaneous 22-h measurements of intra-oesophageal and intragastric pH were made in 22 patients with symptoms of gastro-oesophageal reflux (7 with peptic oesophagitis, 8 with peptic oesophageal stricture, and 7 with peptic oesophagitis and previous partial gastrectomy) to determine whether alkaline intra-oesophageal ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528809093931
更新日期:1988-08-01 00:00:00
abstract::Ambulatory 24-h esophageal pH monitoring was carried out in 54 patients with erosive/ulcerative reflux esophagitis before a 12- to 24-week treatment with either ranitidine, 150 to 300 mg twice daily, or famotidine, 20 to 40 mg twice daily. After this period, 21 patients continued to present endoscopic evidence of esop...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529008999219
更新日期:1990-08-01 00:00:00
abstract::In a series of 45 consecutive duodenal ulcer patients (DU) the activities of 10 marker enzymes from the brush border, basolateral membrane, mitochondria, and lysosomes were determined by analysis of homogenized material taken with biopsy forceps through an endoscope from the antral and body part of the stomach. They w...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529009095535
更新日期:1990-06-01 00:00:00
abstract:OBJECTIVE:To examine some typical histological findings in Crohn's disease using high-frequency ultrasound and to define the echo properties of these findings. MATERIAL AND METHODS:Bowel resection specimens from 14 patients operated on for Crohn's disease were examined with a 10 MHz linear array ultrasound transducer ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520801898855
更新日期:2008-01-01 00:00:00
abstract::Prostaglandins of the E type stimulate bicarbonate secretion by the duodenal mucosa and inhibit gastric acid secretion, effects that have been related to their anti-ulcer activity. Leukotrienes constitute a more recently discovered branch of the arachidonic acid cascade, and C4 and D4 have been suggested to be ulcerog...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528809090195
更新日期:1988-12-01 00:00:00
abstract::Forty-eight patients with symptomatic duodenal ulcer were randomized to 4 weeks' treatment with cimetidine, 1 g/day (C4), or 1 week of cimetidine treatment followed by 3 weeks of placebo (C1 + P). The study was performed double blind. The symptoms were recorded daily on a visual analogue scale. Endoscopy was performed...
journal_title:Scandinavian journal of gastroenterology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3109/00365528609011103
更新日期:1986-08-01 00:00:00
abstract::Jejunal biopsy in 33 patients before and after intestinal shunt operation for obesity has demonstrated that neither surface nor volume of the villi increase after surgery. Specific disaccharidase activity remained unchanged, and specific alkaline phosphatase activity increased slightly. There was a significant decreas...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:
更新日期:1976-01-01 00:00:00
abstract:BACKGROUND:Hepatic stimulator substance (HSS) is a known hepatic growth factor that appears to be organ-specific but species-nonspecific. In the present study we investigated the effect of HSS administration in a rat model of liver injury and regeneration induced by thioacetamide (TAA) injection. METHODS:TAA (300 mg/k...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365529850171954
更新日期:1998-06-01 00:00:00
abstract::Complicating disorders in various organs outside the intestinal tract are common in ulcerative colitis. This report deals with the occurrence of nephrotic syndrome in two patients with long-standing ulcerative colitis. In the patient studied in most detail, 2 episodes have taken place, the first developing into uremia...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:
更新日期:1976-01-01 00:00:00
abstract:BACKGROUND:Tumor necrosis factor alpha (TNF alpha) and beta (TNF beta) appear to play an important role in the regulation of the inflammatory response. The aim of the present study was to investigate the intrinsic capacity of peripheral blood mononuclear cells (PBMC) to produce these cytokines. METHODS:PBMC from 41 pa...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529509101613
更新日期:1995-11-01 00:00:00
abstract::Antral exclusion was performed in seven adult male Sprague-Dawley rats, which were killed 10 weeks later. Fasting serum gastrin concentrations were almost four times higher than in unoperated controls. There was a slight increase in the thickness of the gastric mucosa, but quantitative electron microscopy showed no si...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528209181059
更新日期:1982-01-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to evaluate the role of 8-OHdG (8-hydroxy-2'-deoxyguanosine) detecting oxidative stress response following cholecystectomy in a randomised multicentre study of patients with minilaparotomy cholecystectomy (MC) versus laparoscopic cholecystectomy (LC). METHODS:Initially, 106 patients ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1080/00365521.2016.1208270
更新日期:2016-12-01 00:00:00
abstract::The jejunal disposal of perfused acid was studied in 11 control subjects and 12 patients with duodenal ulcer. It was found that the capacity to dispose of acid was saturable and was less than control in patients with duodenal ulcer. When the load of acid was small, all the acid disappeared from the jejunum and sodium ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:
更新日期:1976-01-01 00:00:00
abstract:BACKGROUND AND AIMS:Accurate biomarkers for quantifying liver fibrosis are important for clinical practice and trial end-points. We compared the diagnostic performance of magnetic resonance imaging (MRI), including gadoxetate-enhanced MRI and 31P-MR spectroscopy, with fibrosis stage and serum fibrosis algorithms in a c...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365521.2020.1786599
更新日期:2020-07-01 00:00:00
abstract::Seventy-eight young patients with symptoms of chronic inflammatory bowel disease (IBD) of the colon have been investigated to determine to what degree colonoscopy adds important information for the diagnosis of IBD in addition to results of the routine procedures, including rectosigmoidoscopy carried out at the same t...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528809093915
更新日期:1988-06-01 00:00:00
abstract:BACKGROUND:As data is limited on the outcomes of calcineurin inhibitors (CNI) in autoimmune hepatitis (AIH), we evaluated the efficacy and safety of CNI in AIH patients who failed prior treatment(s). METHODS:A retrospective study was performed of AIH patients who received cyclosporine A (CsA) and/or tacrolimus (TAC) a...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365521.2020.1821764
更新日期:2020-11-01 00:00:00
abstract::Psychologic and social factors have been implicated in the aetiology of dyspepsia. In this study these factors were investigated in relation to flatulent dyspepsia, a symptom complex that has traditionally been associated with gallbladder disease. Subjects completed the Middlesex Hospital Questionnaire and the Life Ev...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528708991921
更新日期:1987-09-01 00:00:00
abstract:OBJECTIVE:Pancreatic cancer continues to be an urgent clinical problem. We used the novel DNA methyltransferase inhibitor Zebularine and the histone deacetylase inhibitor SAHA to investigate the epigenetic influence on viability and differentiation of the pancreatic cancer cell lines YAP C, DAN G and Panc-89 in vitro a...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520600874198
更新日期:2007-01-01 00:00:00
abstract:OBJECTIVE:Enteric neuropathy with mild inflammation (ganglionitis) has been described in several motility disorders including irritable bowel syndrome (IBS), enteric dysmotility (ED), slow-transit constipation (STC) and chronic intestinal pseudo-obstruction (CIPO). The purpose of this study was to test the hypothesis t...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520701396216
更新日期:2007-11-01 00:00:00
abstract:BACKGROUND:We assessed the controversial topic of using 22-gauge needles in endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) for the diagnosis and evaluation of Ki67 labeling indices (Ki67LI) of pancreatic neuroendocrine tumors (pNET). METHODS:Thirty-eight patients with pNET who underwent EUS-FNA between ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365521.2014.934909
更新日期:2014-11-01 00:00:00
abstract:OBJECTIVES:Faecal Calprotectin (FC) is a sensitive marker for gut inflammation. However, slightly elevated FC levels are also common in subjects without inflammation. We investigated the association between FC and clinical factors including concomitant use of medical therapy in patients with a normal colonoscopy. MATE...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365521.2019.1566493
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:Topical treatment is effective in patients with distal ulcerative colitis. This trial compares the efficacy, safety, and practicality of 4 weeks' treatment with 500 mg mesalazine suppositories with those of 178 mg hydrocortisone foam, both given twice daily. METHODS:Seventy-nine patients with distal ulcerat...
journal_title:Scandinavian journal of gastroenterology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.3109/00365529509093256
更新日期:1995-02-01 00:00:00
abstract:OBJECTIVE:Exclusive polymeric diet enriched with transforming growth factor-beta 2 (ANS-TGF-β2) has been used for remission induction and maintenance in pediatric Crohn's disease (CD). Its use in the preoperative setting has never been evaluated. The aim of this study was to evaluate preoperative ANS-TGF-β2 to decrease...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365521.2016.1221994
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Small bowel angiodysplasias (SBA) account for 50% of obscure gastrointestinal bleeding. Lesions bleed recurrently and current treatments are relatively ineffective at reducing re-bleeding. Little is known about the natural history of SBA which is needed to guide treatment decisions and counsel patients on pr...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365521.2015.1102317
更新日期:2016-01-01 00:00:00
abstract::C-kit gene gain of function mutations are important in the pathogenesis of gastrointestinal stromal tumors (GISTs). Imatinib is a selective tyrosine kinase inhibitor of KIT and achieves a partial response or stable disease in most patients with metastatic GIST, but there is increasing evidence of acquired resistance. ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520802647459
更新日期:2009-01-01 00:00:00
abstract::In a series of 36 consecutive patients with proved idiopathic hemochromatosis and with a mean follow-up time of 8 years, 10 patients developed 11 carcinomas (30.6%). Five patients had hepatomas and six patients extrahepatic carcinoma involving lungs (four), oral cavity (one), and thyroid (one). The findings suggest a ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528009181523
更新日期:1980-01-01 00:00:00