Abstract:
AIM:To investigate the implication of the hypoxia inducible factor HIF-1alpha mRNA in gastric carcinoma and its relation to the expression of vascular endothelial growth factor (VEGF) protein, tumor angiogenesis invasion/metastasis and the patient's survival. METHODS:In situ hybridization was used to examine expression of HIF-1alpha mRNA, and immunohistochemical staining was used to examine expression of VEGF protein and CD34 in 118 specimens from patients with gastric carcinoma. RESULTS:The positive rates of HIF-1alpha mRNA and VEGF protein were 49.15% and 55.92%, respectively. Positive expressions of HIF-1alpha and VEGF in stage T3-T4 tumors and those with vessel invasion, lymph node metastasis and distant metastasis were dramatically stronger than stage T1-T2 cases and those without vessel invasion, lymph node metastasis and distant metastasis. The mean microvascular density (MVD) in stage T3-T4 tumors and those with vessel invasion, lymph node metastasis and distant metastasis was significantly higher than stage T1-T2 tumors and those without vessel invasion, lymph node metastasis and distant metastasis. The mean MVD in tumors with positive HIF-1alpha and VEGF expression was significantly higher than that in tumors with negative HIF-1alpha and VEGF expression. The expression of HIF-1alpha was positively correlated with VEGF protein. There were positive correlations between MVD and expression of HIF-1alpha and VEGF. The mean survival time and the 5-year survival rate in cases with positive expression HIF-1alpha and VEGF and MVD value >or= 41.5/0.72 mm2 were significantly lower than those with negative expression of HIF-1alpha and VEGF and MVD value < 41.5/0.72 mm2. CONCLUSION:Overexpression of HIF-1alpha is found in gastric carcinoma. HIF-1alpha may induce the angiogenesis in gastric carcinoma by upregulating the transcription of VEGF gene, and take part in tumor invasion and metastasis. They can be used as prognostic markers of gastric cancer in clinical practice.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Ma J,Zhang L,Ru GQ,Zhao ZS,Xu WJdoi
10.3748/wjg.v13.i11.1680subject
Has Abstractpub_date
2007-03-21 00:00:00pages
1680-6issue
11eissn
1007-9327issn
2219-2840journal_volume
13pub_type
杂志文章abstract:AIM:To investigate the relationship between the polymorphism of class II transactivator (CIITA) gene promoters and chronic hepatitis B (CHB). METHODS:Genomic DNA was prepared from peripheral blood leukocytes. Promoters I, III and IV of gene were analyzed respectively with polymerase chain reaction single strand confor...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i6.854
更新日期:2005-02-14 00:00:00
abstract::Despite progress in the treatment of advanced and metastatic pancreatic cancer (PC), the outcome of this disease remains dismal for the majority of patients. Given the moderate efficacy of treatment, prognostic factors may help to guide treatment decisions. Several trials identified baseline performance status as an i...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v13.i2.224
更新日期:2007-01-14 00:00:00
abstract:AIM:To explore the mechanism of protection against acetaminophen-induced acute liver injury by Liuweiwuling tablets. METHODS:Intraperitoneal injections of acetaminophen (250 mg/kg) were used to induce acute liver injury in male C57BL/6 mice. A total of 24 healthy mice were randomly assigned to two groups: an acute liv...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v21.i26.8089
更新日期:2015-07-14 00:00:00
abstract::Percutaneous ablation using thermal or chemical methods has been widely used in the treatment of hepatocellular carcinoma (HCC). Nowadays, contrast-enhanced imaging modalities such as computed tomography (CT), magnetic resonance imaging (MRI), and contrast-enhanced ultrasound (CEUS) are widely used to evaluate local t...
journal_title:World journal of gastroenterology
pub_type: 评论,杂志文章
doi:10.3748/wjg.v19.i6.797
更新日期:2013-02-14 00:00:00
abstract::A 46-year-old female patient with terminal ileum Crohn's disease and ankylosing spondylitis presented with recurrent angioedema and urticaria. Investigations ruled out hereditary angioedema, and environmental or food allergen triggers. She was diagnosed with chronic idiopathic urticaria with angioedema, and was treate...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v18.i34.4787
更新日期:2012-09-14 00:00:00
abstract::The use of thiopurines as immunosuppression for the treatment of refractory or chronic active inflammatory bowel disease is established for both Crohn's disease and ulcerative colitis. Nevertheless, many questions remain concerning the optimal treatment regimens of azathioprine, 6-mercaptopurine and thioguanine. We wi...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v19.i7.1040
更新日期:2013-02-21 00:00:00
abstract::Tumors of the minor papilla of the duodenum are quite rare. We successfully and safely treated an 18-mm adenoma of the minor papilla associated with pancreas divisum using endoscopic papillectomy. A 64-year-old man was admitted to our hospital for treatment of an asymptomatic mass in the minor papilla detected by uppe...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.15.1138
更新日期:2009-03-07 00:00:00
abstract::It is common practice to follow patients with colorectal cancer for some years after resection and/or adjuvant treatment. Data are lacking about how often patients should be seen, what tests should be performed, and what surveillance strategy has a significant impact on patient outcome. Seven randomized trials have ad...
journal_title:World journal of gastroenterology
pub_type: 社论
doi:10.3748/wjg.v16.i12.1427
更新日期:2010-03-28 00:00:00
abstract::Helicobacter pylori (H. pylori) colonizes the stomach of humans and causes chronic infection. The majority of bacteria live in the mucus layer overlying the gastric epithelial cells and only a small proportion of bacteria are found interacting with the epithelial cells. The bacteria living in the gastric mucus may act...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i19.5610
更新日期:2014-05-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.6589
更新日期:2008-11-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3748/wjg.v11.i8.1225
更新日期:2005-02-28 00:00:00
abstract:AIM:To construct tree models for classification of diffuse large B-cell lymphomas (DLBCL) by chromosome copy numbers, to compare them with cDNA microarray classification, and to explore models of multi-gene, multi-step and multi-pathway processes of DLBCL tumorigenesis. METHODS:Maximum-weight branching and distance-ba...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i11.1737
更新日期:2007-03-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v20.i15.4407
更新日期:2014-04-21 00:00:00
abstract::Cytokines are indispensable signals of the mucosa-associated immune system for maintaining normal gut homeostasis. An imbalance of their profile in favour of inflammation initiation may lead to disease states, such as that is observed in inflammatory bowel diseases (IBD). Although Crohn's disease (CD) is often describ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v18.i41.5848
更新日期:2012-11-07 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 社论
doi:10.3748/wjg.15.2305
更新日期:2009-05-21 00:00:00
abstract:AIM:To assess the impact of preoperative neoadjuvant bevacizumab (Bev) on the outcome of patients undergoing resection for colorectal liver metastases (CLM). METHODS:Eligible trials were identified from Medline, Embase, Ovid, and the Cochrane database. The data were analyzed with fixed-effects or random-effects models...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
doi:10.3748/wjg.v19.i5.761
更新日期:2013-02-07 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::The yeast Saccharomyces boulardii CNCM I-745 is one of the probiotics recommended for the prevention of antibiotic-associated diarrhea. Studies conducted in vivo and in vitro demonstrated that in the case of infectious diseases there are two potential sites of action of Saccharomyces boulardii CNCM I-745: (1) An actio...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v25.i18.2188
更新日期:2019-05-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.15.583
更新日期:2009-02-07 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v8.i6.1081
更新日期:2002-12-01 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i1.99
更新日期:2003-01-01 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v25.i11.1378
更新日期:2019-03-21 00:00:00
abstract::Celiac disease (CD) is manifested by a variety of clinical signs and symptoms that may begin either in childhood or adult life. Neurological symptoms without signs of malabsorption have been observed for a long time in CD. In this report, an 8-year-old girl with CD presented with rarely seen dilated cardiomyopathy and...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v16.i18.2302
更新日期:2010-05-14 00:00:00
abstract:AIM:To compare gene expression profiles of pancreatic adenocarcinoma tissue specimens, human pancreatic and colon adenocarcinoma and leukemia cell lines and normal pancreas samples in order to distinguish differentially expressed genes and to validate the differential expression of a subset of genes by quantitative rea...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i21.3344
更新日期:2006-06-07 00:00:00
abstract:AIM:To investigate the hotspots, direction, and the time course of evolution of hepatitis A virus in the process of consecutive cell culture passage in human KMB17 diploid cells. METHODS:Wild type hepatitis A virus H2w was serially propagated in KMB17 cells until passage 30, and the full-length genomes of H2w and its ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i34.4630
更新日期:2007-09-14 00:00:00
abstract::Colorectal cancer incidence and mortality in patients younger than 50 years are increasing, but screening before the age of 50 is not offered in Europe. Advanced-stage diagnosis and mortality from colorectal cancer before 50 years of age are increasing. This is not a detection-bias effect; it is a real issue affecting...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v25.i21.2565
更新日期:2019-06-07 00:00:00
abstract:AIM:To determine whether absorbable sutures or non-absorbable sutures are better in preventing surgical site infection (SSI), in this paper we discuss the results of a randomized clinical trial which examined the type of sutures used during hepatectomy. METHODS:All hepatic resections performed from January 2007 to Nov...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,随机对照试验
doi:10.3748/wjg.v17.i18.2338
更新日期:2011-05-14 00:00:00
abstract:BACKGROUND:Non-invasive evaluation for liver fibrosis is clinically important, especially in patients with undetectable hepatitis B virus (HBV) DNA treated with nucleoside analogs. AIM:To clarify the monitoring power of hepatitis B core-related antigen (HBcrAg) for hepatic histologic changes in patients with chronic h...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.3748/wjg.v25.i32.4764
更新日期:2019-08-28 00:00:00
abstract:AIM:To investigate the reasons for the occurrence of the pink-color sign of iodine-unstained lesions. METHODS:In chromoendoscopy, the pink-color sign of iodine-unstained lesions is recognized as useful for the diagnosis of esophageal squamous cell carcinoma. Patients with superficial esophageal neoplasms treated by en...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i27.4300
更新日期:2013-07-21 00:00:00
abstract:AIM:To investigate the pathological effect of Helicobacter pylori (H pylori) on human hepatic cells, proteomic methods were used to find and to identify proteins that were overexpressed in HepG2 cells treated by H pylori. METHODS:H pylori was co-cultured with HepG2 for 6 h. Two-dimensional gel electrophoresis was used...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i22.3485
更新日期:2005-06-14 00:00:00