Helicobacter pylori γ-glutamyl transpeptidase: a formidable virulence factor.

Abstract:

:Helicobacter pylori (H. pylori) produce an enzyme known as γ-glutamyl transpeptidase (HpGGT) that is highly conserved and common to all strains. HpGGT has been gaining increasing attention as an important virulence factor of the bacterium, having been demonstrated to be an important colonization factor in several animal models and has also recently been strongly associated with the development of peptic ulcer disease. From the results of various independent researcher groups, it is clear that HpGGT acts through several pathways to damage gastric epithelial cells including the induction of apoptosis and cell cycle arrest, production of reactive oxygen species leading to DNA damage, promotion of inflammation by increasing cyclooxygenase-2 and interleukin-8 expression, and upregulation of heparin-binding epidermal growth factor-like growth factor resulting in cell survival and proliferation. In addition, the potential role of HpGGT in promoting gastric carcinogenesis will also be discussed in this review. Apart from affecting the gastric epithelium, HpGGT also has immunomodulatory actions on host immune cells where it displays an antiproliferative effect on T cells by inducing cell cycle arrest and also works with other H. pylori virulence factors to skew dendritic cells towards a tolerogenic phenotype, possibly contributing to the persistence of the pathogen in the gastric mucosa.

journal_name

World J Gastroenterol

authors

Ling SS,Yeoh KG,Ho B

doi

10.3748/wjg.v19.i45.8203

subject

Has Abstract

pub_date

2013-12-07 00:00:00

pages

8203-10

issue

45

eissn

1007-9327

issn

2219-2840

journal_volume

19

pub_type

杂志文章,评审
  • H pylori receptor MHC class II contributes to the dynamic gastric epithelial apoptotic response.

    abstract:AIM:To investigate the role of MHC class II in the modulation of gastric epithelial cell apoptosis induced by H pylori infection. METHODS:After stimulating a human gastric epithelial cell line with bacteria or agonist antibodies specific for MHC class II and CD95, the quantitation of apoptotic and anti-apoptotic event...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v12.i29.4689

    authors: Bland DA,Suarez G,Beswick EJ,Sierra JC,Reyes VE

    更新日期:2006-08-07 00:00:00

  • Synergetic anticancer effect of combined gemcitabine and photodynamic therapy on pancreatic cancer in vivo.

    abstract:AIM:To investigate the anti-tumor effects of combined cytotoxic drug (gemcitabine) and photodynamic therapy (PDT) on human pancreatic cancer xenograft in nude mice. METHODS:Human pancreatic cancer cell line SW1990 was used in the investigation of the in vivo effect of combined gemcitabine and PDT on human pancreatic c...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.15.737

    authors: Xie Q,Jia L,Liu YH,Wei CG

    更新日期:2009-02-14 00:00:00

  • Gastric intramural hematoma accompanied by severe epigastric pain and hematemesis after endoscopic mucosal resection.

    abstract::Gastric intramural hematoma is a rare injury of the stomach, and is most often seen in patients with underlying disease. Such injury following endoscopic therapy is even rarer, and there are no universally accepted guidelines for its treatment. In this case report, we describe a gastric intramural hematoma which occur...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v18.i47.7127

    authors: Sun P,Tan SY,Liao GH

    更新日期:2012-12-21 00:00:00

  • Left-sided gallbladder: its clinical significance and imaging presentations.

    abstract:AIM:To assess the importance of preoperative diagnosis and presentation of left-sided gallbladder using ultrasound (US), CT and angiography. METHODS:Retrospective review of 1482 patients who underwent enhanced CT scanning was performed. Left-sided gallbladder was diagnosed if a right-sided ligamentum teres was present...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v13.i47.6404

    authors: Hsu SL,Chen TY,Huang TL,Sun CK,Concejero AM,Tsang LL,Cheng YF

    更新日期:2007-12-21 00:00:00

  • Integrated genomic analysis for prediction of survival for patients with liver cancer using The Cancer Genome Atlas.

    abstract:AIM:To evaluate the prognostic power of different molecular data in liver cancer. METHODS:Cox regression screen and least absolute shrinkage and selection operator were performed to select significant prognostic variables. Then the concordance index was calculated to evaluate the prognostic power. For the combination ...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v24.i28.3145

    authors: Song YZ,Li X,Li W,Wang Z,Li K,Xie FL,Zhang F

    更新日期:2018-07-28 00:00:00

  • Protective effect and mechanism of stronger neo-minophagen C against fulminant hepatic failure.

    abstract:AIM:To investigate the protective effect of stronger neo-minophafen C (SNMC) on fulminant hepatic failure (FHF) and its underlying mechanism. METHODS:A mouse model of FHF was established by intraperitoneal injection of galactosamine (D-Gal N) and lipopolysaccharide (LPS). The survival rate, liver function, inflammator...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v13.i3.462

    authors: Yang BS,Ma YJ,Wang Y,Chen LY,Bi MR,Yan BZ,Bai L,Zhou H,Wang FX

    更新日期:2007-01-21 00:00:00

  • Factors related to lymph node metastasis and surgical strategy used to treat early gastric carcinoma.

    abstract:AIM:The prognosis of early gastric carcinoma (EGC) is generally excellent after surgery. The presence or absence of lymph node metastasis in EGC is an important prognostic factor. The survival and recurrence rates of node-negative EGC are much better than those of node-positive EGC. This study examined the factors rela...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v10.i5.737

    authors: Kim DY,Joo JK,Ryu SY,Kim YJ,Kim SK

    更新日期:2004-03-01 00:00:00

  • Antineoplastic effects of octreotide on human gallbladder cancer cells in vitro.

    abstract:AIM:To investigate whether octreotide can inhibit the growth of human gallbladder cancer cells in vitro and to elucidate the antineoplastic mechanism of octreotide in gallbladder cancer. METHODS:A human gallbladder cancer cell line, GBC-SD, was cultured in vitro. The antiproliferative effects of octreotide were examin...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v10.i7.1043

    authors: Wang JH,Xing QT,Yuan MB

    更新日期:2004-04-01 00:00:00

  • Fourth-generation quinolones in the treatment of Helicobacter pylori infection: A meta-analysis.

    abstract:AIM:To assess the efficacy and safety of fourth-generation quinolones for Helicobacter pylori (H. pylori) eradication, we conducted this systematic review and meta-analysis of randomized clinical trials. METHODS:Major literature databases (PubMed, EMBASE and the Cochrane Central Register of Controlled Trials) were sea...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,meta分析

    doi:10.3748/wjg.v24.i29.3302

    authors: An Y,Wang Y,Wu S,Wang YH,Qian X,Li Z,Fu YJ,Xie Y

    更新日期:2018-08-07 00:00:00

  • Influence of continuous veno-venous hemofiltration on the course of acute pancreatitis.

    abstract:AIM:To investigate whether continuous veno-venous hemofiltration (CVVH) in different filtration rate to eliminate cytokines would result in different efficiency in acute pancreatitis, whether the saturation time of filter membrane was related to different filtration rate, and whether the onset time of CVVH could influe...

    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.i31.4815

    authors: Jiang HL,Xue WJ,Li DQ,Yin AP,Xin X,Li CM,Gao JL

    更新日期:2005-08-21 00:00:00

  • Comparison of concomitant and subsequent cholangiocarcinomas associated with hepatolithiasis: Clinical implications.

    abstract:AIM:To compare the outcomes of concomitant cholangiocarcinoma (C-CCA) and subsequent cholangiocarcinoma (S-CCA) associated with hepatolithiasis. METHODS:From December 1987 to December 2007, 276 patients underwent hepatic resection for hepatolithiasis in Changhua Christian Hospital. Sixty-five patients were excluded du...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v19.i3.375

    authors: Lin CC,Lin PY,Chen YL

    更新日期:2013-01-21 00:00:00

  • MicroRNAs as therapeutic strategy for hepatitis B virus-associated hepatocellular carcinoma: current status and future prospects.

    abstract::Hepatocellular carcinoma (HCC) remains to be one of the top causing cancer-related deaths today. The majority of HCC cases are reported to be the result of chronic hepatitis B virus (HBV) infection. Current treatments for HBV-related HCC revolve around the use of drugs to inhibit viral replication, as a high level of ...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v20.i20.5973

    authors: Tan YL,Chen WN

    更新日期:2014-05-28 00:00:00

  • Plasma D (-)-lactate as a new marker for diagnosis of acute intestinal injury following ischemia-reperfusion.

    abstract:AIM:To observe the kinetics of D (-)-lactate alteration in both portal and systemic circulation systems, and its relationship with intestinal injury in rats subjected to acute intestinal ischemia-reperfusion. METHODS:Anesthetized rats underwent a 75-min superior mesenteric artery occlusion followed by a 6-h reperfusio...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v3.i4.225

    authors: Yao YM,Yu Y,Wu Y,Lu LR,Sheng ZY

    更新日期:1997-12-15 00:00:00

  • Current understanding concerning intestinal stem cells.

    abstract::In mammals, the intestinal epithelium is a tissue that contains two distinct pools of stem cells: active intestinal stem cells and reserve intestinal stem cells. The former are located in the crypt basement membrane and are responsible for maintaining epithelial homeostasis under intact conditions, whereas the latter ...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v22.i31.7099

    authors: Cui S,Chang PY

    更新日期:2016-08-21 00:00:00

  • Outcomes and management of viral hepatitis and human immunodeficiency virus co-infection in liver transplantation.

    abstract::Liver transplantation for human immunodeficiency virus (HIV) positive patients with viral hepatitis co-infection is increasingly offered in many North American and European liver transplant centers. Prior studies have demonstrated acceptable post-transplant outcomes and no increased risk of HIV complications in patien...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v20.i2.414

    authors: Congly SE,Doucette KE,Coffin CS

    更新日期:2014-01-14 00:00:00

  • Pleiotropic effects of statins in the diseases of the liver.

    abstract::Statins are a class of molecules that inhibit HMG CoA reductase. They are usually prescribed as a lipid lowering medication. However, there is accumulating evidence that statins have multiple secondary effects both related and unrelated to their lipid-lowering effect. This narrative review of the literature aims to pr...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v22.i27.6201

    authors: Janicko M,Drazilova S,Pella D,Fedacko J,Jarcuska P

    更新日期:2016-07-21 00:00:00

  • Influence of Helicobacter pylori infection on ghrelin levels in children.

    abstract:AIM:To compare ghrelin levels in plasma and gastric mucosa before and after Helicobacter pylori (H. pylori) treatment in children with H. pylori-associated functional dyspepsia. METHODS:Children with H. pylori-associated functional dyspepsia were enrolled in this study. H. pylori infection was confirmed by positive ba...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v18.i36.5096

    authors: Deng ZH,Chu B,Xu YZ,Zhang B,Jiang LR

    更新日期:2012-09-28 00:00:00

  • Ultrastructure of oval cells in children with chronic hepatitis B, with special emphasis on the stage of liver fibrosis: the first pediatric study.

    abstract:AIM:To investigate the ultrastructure of oval cells in children with chronic hepatitis B, with special emphasis on their location in areas of collagen fibroplasia. METHODS:Morphological investigations were conducted on biopsy material obtained from 40 children, aged 3-16 years with chronic hepatitis B. The stage of fi...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v13.i21.2918

    authors: Sobaniec-Lotowska ME,Lotowska JM,Lebensztejn DM

    更新日期:2007-06-07 00:00:00

  • Expression of gastrointestinal nesfatin-1 and gastric emptying in ventromedial hypothalamic nucleus- and ventrolateral hypothalamic nucleus-lesioned rats.

    abstract:AIM:To determine the expression levels of gastrointestinal nesfatin-1 in ventromedial hypothalamic nucleus (VMH)-lesioned (obese) and ventrolateral hypothalamic nucleus (VLH)-lesioned (lean) rats that exhibit an imbalance in their energy metabolism and gastric mobility. METHODS:Male Wistar rats were randomly divided i...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v20.i22.6897

    authors: Tian ZB,Deng RJ,Sun GR,Wei LZ,Kong XJ,Ding XL,Jing X,Zhang CP,Ge YL

    更新日期:2014-06-14 00:00:00

  • Expression of some tumor associated factors in human carcinogenesis and development of gastric carcinoma.

    abstract:AIM:To study the effect of IGF-1/IGF-1R and gastrin/CCK-BR on carcinogenesis and development of human gastric carcinoma and to explore its mechanism and provide a credible theoretical foundation for early diagnosis and molecular therapy of gastric carcinoma. METHODS:mRNA expression levels of IGF-1/IGF-1R and gastrin/C...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v11.i21.3217

    authors: Zhao MD,Hu XM,Sun DJ,Zhang Q,Zhang YH,Meng W

    更新日期:2005-06-07 00:00:00

  • Protective effects of panax notoginseng saponin on dextran sulfate sodium-induced colitis in rats through phosphoinositide-3-kinase protein kinase B signaling pathway inhibition.

    abstract:BACKGROUND:Intestinal inflammation is a common digestive tract disease, which is usually treated with hormone medicines. Hormone medicines are effective to some extent, but long-term use of them may bring about many complications. AIM:To explore the protective effects of panax notoginseng saponin (PNS) against dextran...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v26.i11.1156

    authors: Lu QG,Zeng L,Li XH,Liu Y,Du XF,Bai GM,Yan X

    更新日期:2020-03-21 00:00:00

  • Incidents and adverse events of endoscopic ultrasound-guided fine-needle aspiration for pancreatic cystic lesions.

    abstract:AIM:To evaluate the diagnostic value and safety mainly regarding incidents of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) for pancreatic cystic lesions (PCLs). METHODS:A total of 150 consecutive patients with suspected PCLs were prospectively enrolled from April 2015 to November 2016. We finally enro...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v23.i30.5610

    authors: Du C,Chai NL,Linghu EQ,Li HK,Sun YF,Xu W,Wang XD,Tang P,Yang J

    更新日期:2017-08-14 00:00:00

  • Ketamine and midazolam sedation for pediatric gastrointestinal endoscopy in the Arab world.

    abstract:AIM:To evaluate the safety and effectiveness of intravenous ketamine-midazolam sedation during pediatric endoscopy in the Arab world. METHODS:A retrospective cohort study of all pediatric endoscopic procedures performed between 2002-2008 at the shared endoscopy suite of King Abdullah University Hospital, Jordan Univer...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v17.i31.3630

    authors: Miqdady MI,Hayajneh WA,Abdelhadi R,Gilger MA

    更新日期:2011-08-21 00:00:00

  • The genetics of nicotine dependence: relationship to pancreatic cancer.

    abstract::Smoking of tobacco products continues to be a major cause of worldwide health problems. Epidemiological studies have shown that tobacco smoking is the greatest risk factor for the development of pancreatic cancer. Smokers who are able to quit smoking can reduce their risk of pancreatic cancer by nearly 50% within two ...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v12.i46.7433

    authors: MacLeod SL,Chowdhury P

    更新日期:2006-12-14 00:00:00

  • Clinicopathological evaluation of duodenal well-differentiated endocrine tumors.

    abstract:AIM:To assess the clinicopathological characteristics of duodenal well-differentiated endocrine tumors. METHODS:We examined clinicopathological characteristics in 11 consecutive patients with duodenal well-differentiated endocrine tumors treated by endoscopic therapy or surgery in our hospital from 1992 through 2007. ...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v16.i36.4583

    authors: Ishido K,Tanabe S,Higuchi K,Sasaki T,Katada C,Azuma M,Naruke A,Koizumi W,Mikami T

    更新日期:2010-09-28 00:00:00

  • Use of pre-, pro- and synbiotics in patients with acute pancreatitis: a meta-analysis.

    abstract:AIM:To assess the clinical outcomes of pre-, pro- and synbiotics therapy in patients with acute pancreatitis. METHODS:The databases including Medline, Embase, the Cochrane Library, Web of Science and Chinese Biomedicine Database were searched for all relevant randomized controlled trials that studied the effects of pr...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,meta分析

    doi:10.3748/wjg.v16.i31.3970

    authors: Zhang MM,Cheng JQ,Lu YR,Yi ZH,Yang P,Wu XT

    更新日期:2010-08-21 00:00:00

  • Nutrition and physical activity in NAFLD: an overview of the epidemiological evidence.

    abstract::Nonalcoholic fatty liver disease (NAFLD) has been recognized as a major health burden. The high prevalence of NAFLD is probably due to the contemporary epidemics of obesity, unhealthy dietary pattern, and sedentary lifestyle. The efficacy and safety profile of pharmacotherapy in the treatment of NAFLD remains uncertai...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v17.i29.3377

    authors: Zelber-Sagi S,Ratziu V,Oren R

    更新日期:2011-08-07 00:00:00

  • Hepatitis elimination by 2030: Progress and challenges.

    abstract::Globally, over 300 million people are living with viral hepatitis with approximately 1.3 million deaths per year. In 2016, World Health Assembly adopted the Global Health Sector Strategy on viral hepatitis to eliminate hepatitis by 2030. Different World Health Organization member countries are working on hepatitis con...

    journal_title:World journal of gastroenterology

    pub_type: 社论

    doi:10.3748/wjg.v24.i44.4959

    authors: Waheed Y,Siddiq M,Jamil Z,Najmi MH

    更新日期:2018-11-28 00:00:00

  • Conventional therapy for Crohn's disease.

    abstract::Crohn's disease (CD) is a multifactorial disorder of unknown cause. Outstanding progress regarding the pathophysiology of CD has led to the development of innovative therapeutic concepts. Numerous controlled trials have been performed in CD over the last years. However, many drugs have not been approved by regulatory ...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v12.i30.4794

    authors: Büning C,Lochs H

    更新日期:2006-08-14 00:00:00

  • Impact of comorbidities on the severity of chronic hepatitis B at presentation.

    abstract:AIM:To evaluate the clinical relevance of each cofactor on clinical presentation of chronic hepatitis B. METHODS:Out of 1366 hepatitis B surface antigen (HBsAg) positive subjects consecutively observed in 79 Italian hospitals, 53 (4.3%) showed as the only cofactor hepatitis D virus (HDV) infection [hepatitis B virus (...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,多中心研究

    doi:10.3748/wjg.v18.i14.1616

    authors: Sagnelli E,Stroffolini T,Mele A,Imparato M,Sagnelli C,Coppola N,Almasio PL

    更新日期:2012-04-14 00:00:00