Abstract:
BACKGROUND:It is unclear whether immune escape-associated mutations in the major hydrophilic region of hepatitis B virus surface antigen (HBsAg) are associated with nucleoside/nucleotide analog resistance. AIM:To evaluate the association between immune escape-associated mutations and nucleoside/nucleotide analog resistance mutations. METHODS:In total, 19440 patients with chronic hepatitis B virus infection, who underwent resistance testing at the Fifth Medical Center of Chinese PLA General Hospital between July 2007 and December 2017, were enrolled. As determined by sequence analysis, 6982 patients harbored a virus with resistance mutations and 12458 harbored a virus lacking resistance mutations. Phenotypic analyses were performed to evaluate HBsAg production, replication capacity, and drug-induced viral inhibition of patient-derived drug-resistant mutants with or without the coexistence of sA159V. RESULTS:The rate of immune escape-associated mutation was significantly higher in 9 of the 39 analyzed mutation sites in patients with resistance mutations than in patients without resistance mutations. In particular, these mutations were sQ101H/K/R, sS114A/L/T, sT118A/K/M/R/S/V, sP120A/L/Q/S/T, sT/I126A/N/P/S, sM133I/L/T, sC137W/Y, sG145A/R, and sA159G/V. Among these, sA159V was detected in 1.95% (136/6982) of patients with resistance mutations and 1.08% (134/12,458) of patients lacking resistance mutations (P < 0.05). The coexistence of sA159V with lamivudine (LAM) and entecavir (ETV)-resistance mutations in the same viral genome was identified during follow-up in some patients with drug resistance. HBsAg production was significantly lower and the replication capacity was significantly higher, without a significant difference in LAM/ETV susceptibility, in sA159V-containing LAM/ETV-resistant mutants than in their sA159V-lacking counterparts. CONCLUSION:In summary, we observed a close link between the increase in certain immune escape-associated mutations and the development of resistance mutations. sA159V might increase the fitness of LAM/ETV-resistant mutants under environmental pressure in some cases.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Huang BX,Liu Y,Fan ZP,Si LL,Chen RJ,Wang J,Luo D,Wang FS,Xu DP,Liu XGdoi
10.3748/wjg.v26.i35.5314subject
Has Abstractpub_date
2020-09-21 00:00:00pages
5314-5327issue
35eissn
1007-9327issn
2219-2840journal_volume
26pub_type
杂志文章abstract:AIM:To investigate the expression of cyclooxygenase-2 (COX-2) in gastric cancer and its relation with the liver metastasis and prognosis. METHODS:Expression of COX-2 mRNA and protein was examined in gastric cancer and its paired substantial normal tissue by semi-quantitative reverse transcription-polymerase chain reac...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i31.4911
更新日期:2005-08-21 00:00:00
abstract:AIM:To investigate the efficacy and potential mechanism of Xiaotan Tongfu granules (XTTF) in stress ulcers. METHODS:One hundred sixty rats were randomly divided into 4 groups (n = 10) as follows: the model group (MP group), the control group (CP group), the ranitidine group (RP group) and the XTTF granule group (XP gr...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i33.5473
更新日期:2013-09-07 00:00:00
abstract:AIM:To investigate the effects of gastric pacing on gastric emptying and plasma motilin level in a canine model of gastric motility disorders and the correlation between gastric emptying and plasma motilin level. METHODS:Ten healthy Mongrel dogs were divided into: experimental group of six dogs and control group of fo...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v10.i3.419
更新日期:2004-02-01 00:00:00
abstract::The KRAS oncogene is mutated in approximately 35%-45% of colorectal cancers, and KRAS mutational status testing has been highlighted in recent years. The most frequent mutations in this gene, point substitutions in codons 12 and 13, were validated as negative predictors of response to anti-epidermal growth factor rece...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v18.i37.5171
更新日期:2012-10-07 00:00:00
abstract::Multiple pathogenic mechanisms have been implicated in autoimmune hepatitis, but they have not fully explained susceptibility, triggering events, and maintenance or escalation of the disease. Furthermore, they have not identified a critical defect that can be targeted. The goals of this review are to examine the diver...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v25.i45.6579
更新日期:2019-12-07 00:00:00
abstract:AIM:To investigate the prevalence of celiac disease (CD) in adult patients referred to an open access gastroenterology clinic in the south of Italy and submitted to esophago-gastro-duodenoscopy (EGD) for evaluation of refractory functional dyspepsia. METHODS:Seven hundred and twenty six consecutive dyspeptic patients ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.6948
更新日期:2008-12-07 00:00:00
abstract:AIM:To assess the efficacy and safety of combined directly acting antivirals (DAAs) for the treatment of Chinese chronic hepatitis C (CHC) patients in a real-world setting. METHODS:Hospitalized CHC patients who were treated with DAAs at Peking University First Hospital between January 2015 and December 2016 were enrol...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i22.4072
更新日期:2017-06-14 00:00:00
abstract:AIM:To offer an up-to-date review of all available treatment strategies for patients with synchronous colorectal liver metastases (CLM). METHODS:A comprehensive literature search was performed to identify articles related to the management of patients with synchronous CLM. A search of the electronic databases PubMed, ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v21.i22.7014
更新日期:2015-06-14 00:00:00
abstract:AIM:To evaluate liver stiffness measurement (LSM) using non-invasive transient elastography (Fibroscan) in comparison with liver biopsy for assessment of liver fibrosis in children with biliary atresia (BA). METHODS:Thirty-one children with BA admitted to the Department of Pediatric Surgery of Beijing Children's Hospi...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v21.i22.6931
更新日期:2015-06-14 00:00:00
abstract::Liver resection for hepatocellular carcinoma (HCC) is currently known to be a safer procedure than it was before because of technical advances and improvement in postoperative patient management and remains the first-line treatment for HCC in compensated cirrhosis. The aim of this review is to assess current indicatio...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i17.4892
更新日期:2014-05-07 00:00:00
abstract::Despite the recent advances in the therapeutic modalities, colorectal cancer (CRC) remains to be one of the most common causes of cancer-related death. CRC arises through accumulation of multiple genetic and epigenetic alterations that transform normal colonic epithelium into adenocarcinomas. Among crucial roles of ep...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i4.978
更新日期:2014-01-28 00:00:00
abstract:AIM:To determine the incidence of Epstein Barr virus associated gastric carcinoma (GC) in Brazil and compare the expressions of apoptosis related proteins and nitric oxide synthases between EBV positive and negative gastric carcinoma. METHODS:In situ hybridization of EBV-encoded small RNA-1 (EBER-1) and PCR was perfor...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i31.4959
更新日期:2006-08-21 00:00:00
abstract:BACKGROUND:Lifestyle factors such as body mass index (BMI), alcohol drinking, and cigarette smoking, are likely to impact the prognosis of gastric cancer, but the evidence has been inconsistent. AIM:To investigate the association of lifestyle factors and long-term prognosis of gastric cancer patients in the China Nati...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v26.i14.1613
更新日期:2020-04-14 00:00:00
abstract::Examinations with a visualisation of the anatomy and pathology of the gastrointestinal (GI) tract are often necessary for the diagnosis of GI diseases. Traditional radiology played a crucial role for many years. Endoscopy, despite some limitations, remains the main technique in the differential diagnosis and treatment...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v19.i14.2144
更新日期:2013-01-01 00:00:00
abstract:AIM:To test the Genval recommendations and the usefulness of a short trial of proton pump inhibitor (PPI) in the initial management and maintenance treatment of gastroesophageal reflux disease (GERD) patients. METHODS:Five hundred and seventy seven patients with heartburn were recruited. After completing a psychometri...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.3748/wjg.v17.i9.1160
更新日期:2011-03-07 00:00:00
abstract:AIM:To investigate the safety and efficacy of a Hansenula-derived PEGylated (polyethylene glycol) interferon (IFN)-alpha-2a (Reiferon Retard) plus ribavirin customized regimen in treatment-naïve and previously treated (non-responders and relapsers) Egyptian children with chronic hepatitis C infection. METHODS:Forty-si...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.3748/wjg.v20.i16.4681
更新日期:2014-04-28 00:00:00
abstract::Data from genome wide association studies and geoepidemiological studies established that a combination of genetic predisposition and environmental stimulation is required for the loss of tolerance in primary biliary cholangitis (PBC). The serologic hallmark of PBC are the presence of high titer anti-mitochondrial aut...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v22.i1.338
更新日期:2016-01-07 00:00:00
abstract:AIM:To evaluate the association of pre-treatment (13)C-urea breath test (UBT) results with H pylori density and efficacy of eradication therapy in patients with active duodenal ulcers. METHODS:One hundred and seventeen consecutive outpatients with active duodenal ulcer and H pylori infection were recruited. H pylori d...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.3748/wjg.v10.i7.991
更新日期:2004-04-01 00:00:00
abstract::A 53-year-old male patient with a large hydatid cyst of the left hemidiaphragm and smaller secondary cysts located in the left thoracic cavity and upper left abdominal quadrant presented with two progressively enlarging lipoma-like masses in the left hypochondrium and under the left scapulae respectively. Total excisi...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i44.7210
更新日期:2006-11-28 00:00:00
abstract::Strong evidence supports the concept of immunosurveillance and immunoediting in colorectal cancer. In particular, the density of T CD8⁺ and CD45⁺ lymphocyte infiltration was recently shown to have a better prognostic value than the classic tumor node metastasis classification factor. Other immune subsets, as macrophag...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i14.3738
更新日期:2014-04-14 00:00:00
abstract::Intestinal Ca(2+) absorption is a crucial physiological process for maintaining bone mineralization and Ca(2+) homeostasis. It occurs through the transcellular and paracellular pathways. The first route comprises 3 steps: the entrance of Ca(2+) across the brush border membranes (BBM) of enterocytes through epithelial ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v21.i23.7142
更新日期:2015-06-21 00:00:00
abstract:AIM:To analyze the safety and efficiency of direct-acting antiviral (DAA) regimens in liver-transplanted patients with hepatitis C virus (HCV) reinfection. METHODS:Between January 2014 and December 2016, 39 patients with HCV reinfection after liver transplantation were treated at our tertiary referral center with sofo...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v24.i12.1353
更新日期:2018-03-28 00:00:00
abstract::The use of non-steroidal anti-inflammatory drugs (NSAIDs) is widespread worldwide thanks to their analgesic, anti-inflammatory and antipyretic effects. However, even more attention is placed upon the recurrence of digestive system complications in the course of their use. Recent data suggests that the complications of...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v23.i22.3954
更新日期:2017-06-14 00:00:00
abstract:AIM:To develop a potent and safe gene therapy for esophageal cancer. METHODS:An expression vector carrying fusion suicide gene (yCDglyTK) and shRNA against vascular endothelial growth factor (VEGF) was constructed and delivered into EC9706 esophageal cancer cells by calcium phosphate nanoparticles (CPNP). To achieve t...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v22.i23.5342
更新日期:2016-06-21 00:00:00
abstract::Pancreatic cancer is one of the most aggressive and difficult cancers to treat. Despite numerous research efforts, limited success has been achieved in the therapeutic management of patients with this disease. In the current review, we focus on one component of morphogenesis signaling, Hedgehog (Hh), with the aim of d...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i9.2335
更新日期:2014-03-07 00:00:00
abstract:AIM:To investigate whether Dihydromyricetin (DHM) inhibits cell proliferation and promotes apoptosis by downregulating Notch1 expression. METHODS:The correlation between Notch1 and Hes1 (a Notch1 target molecule) expression in hepatoma samples was confirmed by qRT-PCR. In addition, MTT assays, flow cytometry and TUNEL...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i34.6242
更新日期:2017-09-14 00:00:00
abstract::Ischemic bowel disease results from an acute or chronic drop in the blood supply to the bowel and may have various clinical presentations, such as intestinal angina, ischemic colitis or intestinal infarction. Elderly patients with systemic atherosclerosis who are symptomatic for the disease in two or more vascular bed...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v18.i39.5640
更新日期:2012-10-21 00:00:00
abstract:AIM:To investigate the association between the tag single nucleotide polymorphisms (TagSNPs) of NOD1 and NOD2 and the risk of developing gastric cancer. METHODS:We conducted a hospital-based case-control study including 296 incident gastric cancer patients and 160 gastritis controls. Eight TagSNPs in the NOD1 and NOD2...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v18.i17.2112
更新日期:2012-05-07 00:00:00
abstract:AIM:To investigate long-term outcome in obscure gastrointestinal bleeding (OGIB) after negative capsule endoscopy (CE) and identify risk factors for rebleeding. METHODS:A total of 113 consecutive patients underwent CE for OGIB from May 2003 to June 2010 at Seoul National University Hospital. Ninety-five patients (84.1...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i10.1632
更新日期:2013-03-14 00:00:00
abstract:BACKGROUND:End-stage liver disease caused by non-alcoholic steatohepatitis (NASH) is the second leading indication for liver transplantation. To date, only moderately effective pharmacotherapies exist to treat NASH. Understanding the pathogenesis of NASH is therefore crucial for the development of new therapies. The in...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v26.i33.4933
更新日期:2020-09-07 00:00:00