Abstract:
AIM:To investigate the reactivity of a panel of 8 mouse anti-hepatitis B surface antigen (HBsAg) monoclonal antibodies (mAbs) using a collection of 9 recombinant HBsAg mutants with a variety of amino acid substitutions mostly located within the "a" region. METHODS:The entire HBs genes previously cloned into a mammalian expression vector were transiently transfected into COS7 cells. Two standard unmutated sequences of the ayw and adw subtypes served as controls. Secreted mutant proteins were collected and measured by three commercial diagnostic immunoassays to assess transfection efficiency. Reactivity of anti-HBs mAbs with mutated HBsAgs was determined by sandwich enzyme-linked immunosorbent assay (ELISA). RESULTS:Reactivity of anti-HBs mAbs with mutated HBsAgs revealed different patterns. While three mutants reacted strongly with all mAbs, two mutants reacted weakly with only two mAbs and the remaining proteins displayed variable degrees of reactivity towards different mAbs. Accordingly, four groups of mAbs with different but overlapping reactivity patterns could be envisaged. One group consisting of two mAbs (37C5-S7 and 35C6-S11) was found to recognize stable linear epitopes conserved in all mutants. Mutations outside the "a" determinant at positions 120 (P-->S), 123(T-->N) and 161 (M-->T) were found to affect reactivity of these mAbs. CONCLUSION:Our findings could have important implications for biophysical studies, vaccination strategies and immunotherapy of hepatitis B virus (HBV) mutants.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Roohi A,Yazdani Y,Khoshnoodi J,Jazayeri SM,Carman WF,Chamankhah M,Rashedan M,Shokri Fdoi
10.3748/wjg.v12.i33.5368subject
Has Abstractpub_date
2006-09-07 00:00:00pages
5368-74issue
33eissn
1007-9327issn
2219-2840journal_volume
12pub_type
杂志文章abstract:BACKGROUND:In recent decades, an increasing number of patients have received minimally invasive intervention for infected pancreatic necrosis (IPN) because of the benefits in reducing postoperative multiple organ failure and mortality. However, there are limited published data regarding infection recurrence after treat...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v26.i22.3087
更新日期:2020-06-14 00:00:00
abstract:AIM:To classify gallstone disease as a basis for assessment of post-cholecystectomy symptoms. METHODS:One hundred and fifty three patients with a clinical and ultrasonographic diagnosis of gallstones filled out a structured questionnaire on abdominal pain symptoms and functional gastrointestinal disorder (FGID) before...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v18.i12.1365
更新日期:2012-03-28 00:00:00
abstract::While jejunoileal diverticula are rare and often asymptomatic, they may lead to chronic non-specific or acute symptoms. The large majority of complications present with an acute abdomen similar to appendicitis, cholecystitis or colonic diverticulitis but they also may appear with atypical symptoms. As a result, diagno...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v13.i15.2240
更新日期:2007-04-21 00:00:00
abstract:AIM:To compare two tests for exocrine pancreatic function (EPF) for use in M-ANNHEIM staging for pancreatitis. METHODS:One hundred and ninety four consecutive patients with acute pancreatitis (AP; n = 13), recurrent acute pancreatitis (RAP; n = 65) and chronic pancreatitis (CP; n = 116) were enrolled. EPF was assessed...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i12.2217
更新日期:2017-03-28 00:00:00
abstract:AIM:To explore dysregulation of c-fos in several human malignancies, and to further investigate the role of c-fos in Helicobacter pylori (H. pylori)-induced gastric precancerosis. METHODS:Four-week-old male Mongolian gerbils were employed in the study. 0.5 mL 1X10(8) cfu/L suspension of H. pylori NCTC 11 637 in Brucel...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i3.521
更新日期:2003-03-01 00:00:00
abstract:AIM:We aimed to observe the expression of extracellular matrix (ECM) and cellular adhesion molecules (CAM) in cirrhotic liver tissues after hepatitis C virus (HCV) infection. METHODS:Twelve patients with post HCV inflammatory liver cirrhosis were selected to evaluate their liver function and other virological, patholo...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i14.2184
更新日期:2005-04-14 00:00:00
abstract:AIM:To investigate the diagnosis of nonalcoholic steatohepatitis (NASH) using contrast ultrasonography in the NASH rat model. METHODS:The liver in methionine choline-deficient diet (MCDD) rats, a NASH model constructed by feeding an MCDD, was examined by contrast ultrasonography at weeks 2, 4, 8, 12 and 16, with late ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v17.i37.4191
更新日期:2011-10-07 00:00:00
abstract:BACKGROUND:The implementation of optical diagnosis (OD) of diminutive colorectal lesions in clinical practice has been hampered by differences in performance between community and academic settings. One possible cause is the lack of a standardized learning tool. Since the factors related to better learning are not well...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v25.i10.1278
更新日期:2019-03-14 00:00:00
abstract:AIM:To investigate the allelic and haplotypic association of reg1alpha gene with tropical calcific pancreatitis (TCP). Since TCP is known to have a variable genetic basis, we investigated the interaction between mutations in the susceptibility genes, SPINK1 and CTSB with reg1alpha polymorphisms. METHODS:We analyzed th...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i44.5938
更新日期:2007-11-28 00:00:00
abstract:AIM:Chemokines and their receptors are crucial for immune responses in HCV and HIV infection. RANTES gene polymorphisms lead to altered gene expression and influence the natural course of HIV infection. Therefore, these mutations may also affect the course of HIV/HCV coinfection. METHODS:We determined allele frequenci...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i48.7631
更新日期:2005-12-28 00:00:00
abstract:AIM:To investigate the prognostic value of the model for end-stage liver disease (MELD) and three new MELD-based models combination with serum sodium in decompensated cirrhosis patients-the MELD with the incorporation of serum sodium (MELD-Na), the integrated MELD (iMELD), and the MELD to sodium (MESO) index. METHODS:...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.6546
更新日期:2008-11-14 00:00:00
abstract::Gastrointestinal duplication is an uncommon congenital abnormality in two-thirds of cases manifesting before the age of 2 years. Ileal duplication is common while colonic duplication, either cystic or tubular, is a rather unusual clinical entity that remains asymptomatic and undiagnosed in most cases. Mostly occurring...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i32.5072
更新日期:2005-08-28 00:00:00
abstract::Innate lymphoid cells (ILCs) are defined as a distinct arm of innate immunity. According to their profile of secreted cytokines and lineage-specific transcriptional factors, ILCs can be categorized into the following three groups: group 1 ILCs (including natural killer (NK) cells and ILC1s) are dependent on T-bet and ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v24.i18.1962
更新日期:2018-05-14 00:00:00
abstract::Small cell neuroendocrine carcinoma of the ampulla of Vater is extremely rare and different from the common ampullary adenocarcinoma. The ampullary adenoma is also a rare neoplasm and has the potential to develop an adenocarcinoma. Their coexistence has been rarely reported in the literature. We herein describe an unu...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.4709
更新日期:2008-08-07 00:00:00
abstract::This issue presents different new techniques aiming to increase our understanding of the gastrointestinal system and to improve treatment. The technologies cover selected methods to evoke and assess gut pain, new methods for imaging and physiological measurements, histochemistry, pharmacological modelling etc. There i...
journal_title:World journal of gastroenterology
pub_type: 社论
doi:10.3748/wjg.15.129
更新日期:2009-01-14 00:00:00
abstract::Benign neoplasia of the duodenum are very rare. Moreover, duodenal tubulovillous adenomas are more uncommon lesions. The microscopic structure of tubulovillous adenoma has frond-like projection of mucosa with branching papillary structure and generally upward growth into the lumen. We describe a 72-year-old man who sh...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i23.3262
更新日期:2007-06-21 00:00:00
abstract:AIM:To analyze 67 cases of splenic abscess in a medical center of Taiwan during a period of 19 years. METHODS:From January 1986 to December 2004, a total of 67 patients with splenic abscess were enrolled for the retrospective study. The clinical characteristics, underlying diseases, organism spectra, therapeutic metho...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i3.460
更新日期:2006-01-21 00:00:00
abstract:AIM:CMU-1 is a new preservation solution with a low potassium concentration as well as low viscosity that is highly effective in reducing preservation injury. The purpose of this experiment is to compare the protective effect of CMU-1 solution with that of UW during cold preservation and normothermic reperfusion. METH...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i16.2522
更新日期:2005-04-28 00:00:00
abstract::Pancreatic ductal adenocarcinoma (PDA) is known for its poor prognosis. Most of the patients are diagnosed with advanced stages, when no curative treatment is available. Currently, despite extensive clinical research on PDA, the median overall survival remains short. Diagnosis delay and primary chemo-resistance due to...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i24.7819
更新日期:2014-06-28 00:00:00
abstract::Liver cirrhosis is a paradigm of intestinal dysbiosis. The qualitative and quantitative derangement of intestinal microbial community reported in cirrhotic patients seems to be strictly related with the impairment of liver function. A kind of gut microbial "fingerprint", characterized by the reduced ratio of "good" to...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v21.i43.12322
更新日期:2015-11-21 00:00:00
abstract::It has since long been known, from everyday experience as well as from animal and human studies, that psychological processes-both affective and cognitive-exert an influence on gastrointestinal sensorimotor function. More specifically, a link between psychological factors and visceral hypersensitivity has been suggest...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v13.i25.3438
更新日期:2007-07-07 00:00:00
abstract::Most pancreatic cancer patients present with advanced metastatic disease, resulting in extremely poor 5-year survival, mainly because of the lack of a reliable modality for early detection and limited therapeutic options for advanced disease. Therefore, there is a need for minimally-invasive diagnostic tools for detec...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v22.i38.8480
更新日期:2016-10-14 00:00:00
abstract::Management of acute diarrhea remains a global challenge, particularly in resource-limiting countries. Oral rehydration solution (ORS), a passive rehydrating therapy developed approximately 40 years ago, remains the mainstay treatment. Although ORS is effective for hydration, since it does not inhibit enterotoxin-media...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v22.i9.2711
更新日期:2016-03-07 00:00:00
abstract::AIM:To compare the features of gastroesophageal reflux disease between elderly and younger patients.METHODS:Twenty-four hour pH-monitoring and endoscopy were performed for the 66 elderly patients with typical gastroesophageal reflux symptoms, and the results were compared with 112 symptomatic younger patients.RESULTS:...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v5.i5.421
更新日期:1999-10-01 00:00:00
abstract:AIM:To determine the prevalence, characteristics and clinical course of pancreatic cystic neoplasms (PCNs) in liver transplantation (LT) recipients. METHODS:We retrospectively studied consecutive patients who underwent LT between January 1998 to April 2016. Clinical and laboratory data were obtained from patient medic...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i48.8526
更新日期:2017-12-28 00:00:00
abstract:AIM:To investigate protective effects and molecular mechanisms of green tea polyphenols (GTP) on non-alcoholic fatty liver disease (NAFLD) in Zucker fatty (ZF) rats. METHODS:Male ZF rats were fed a high-fat diet (HFD) for 2 wk then treated with GTP (200 mg/kg) or saline (5 mL/kg) for 8 wk, with Zucker lean rat as thei...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i21.3805
更新日期:2017-06-07 00:00:00
abstract:AIM:To investigate the effects of adeno-associated virus (AAV) mediated expression of human interferon-gamma for gene therapy in experimental hepatic fibrosis in vitro and in vivo. METHODS:We constructed the recombinant AAV encoding human INF-gamma (rAAV- INF-gamma) and took the primary rat hepatic stellate cells and ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i26.4045
更新日期:2005-07-14 00:00:00
abstract::A variety of hepatic and biliary tract disorders may complicate the clinical course of celiac disease. Some of these have been hypothesized to share common genetic factors or have a common immunopathogenesis, such as primary biliary cirrhosis, primary sclerosing cholangitis and autoimmune forms of hepatitis or cholang...
journal_title:World journal of gastroenterology
pub_type: 社论,评审
doi:10.3748/wjg.v12.i10.1503
更新日期:2006-03-14 00:00:00
abstract::Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. At the molecular level, GISTs can be categorized into two groups based on the causative oncogenic mutations. Approximately 85% of GISTs are caused by gain-of-function mutations in the tyrosine kinase receptor ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v26.i34.5074
更新日期:2020-09-14 00:00:00
abstract:BACKGROUND:The etiology of inflammatory bowel disease (IBD) is unknown, but it is believed to be multifactorial. The hygiene hypothesis proposes that better hygiene conditions would lead to less infectious disease during childhood and favor the development of immune-mediated diseases. AIM:To test the hygiene hypothesi...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v26.i25.3611
更新日期:2020-07-07 00:00:00