Abstract:
AIM:To characterise the viral kinetics of enterovirus 71 (EV71). METHODS:In this study, human rhabdomyosarcoma (RD) cells were infected with EV71 at different multiplicity of infection (MOI). After infection, the cytopathic effect (CPE) was monitored and recorded using a phase contrast microscope associated with a CCD camera at different time points post viral infection (0, 6, 12, 24 h post infection). Cell growth and viability were measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay in both EV71 infected and mock infected cells at each time point. EV71 replication kinetics in RD cells was determined by measuring the total intracellular viral RNA with real-time reverse-transcription polymerase chain reaction (qRT-PCR). Also, the intracellular and extracellular virion RNA was isolated and quantified at different time points to analyze the viral package and secretion. The expression of viral protein was determined by analyze the levels of viral structure protein VP1 with Western blotting. RESULTS:EV71 infection induced a significant CPE as early as 6 h post infection (p.i.) in both RD cells infected with high ratio of virus (MOI 10) and low ratio of virus (MOI 1). In EV71 infected cells, the cell growth was inhibited and the number of viable cells was rapidly decreased in the later phase of infection. EV71 virions were uncoated immediately after entry. The intracellular viral RNA began to increase at as early as 3 h p.i. and the exponential increase was found between 3 h to 6 h p.i. in both infected groups. For viral structure protein synthesis, results from western-blot showed that intracellular viral protein VP1 could not be detected until 6 h p.i. in the cells infected at either MOI 1 or MOI 10; and reached the peak at 9 h p.i. in the cells infected with EV71 at both MOI 1 and MOI 10. Simultaneously, the viral package and secretion were also actively processed as the virus underwent rapid replication. The viral package kinetics was comparable for both MOI 1 and MOI 10 infected groups. It was observed that at 3 h p.i, the intracellular virions obviously decreased, thereafter, the intracellular virions began to increase and enter into the exponential phase until 12 h p.i. The total amounts of intracellular virons were decreased from 12 to 24 h p.i. Consistent with this result, the increase of virus secretion occurred during 6 to 12 h p.i. CONCLUSION:The viral kinetics of EV71 were established by analyzing viral replication, package and secretion in RD cells.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Lu J,He YQ,Yi LN,Zan H,Kung HF,He MLdoi
10.3748/wjg.v17.i36.4135subject
Has Abstractpub_date
2011-09-28 00:00:00pages
4135-42issue
36eissn
1007-9327issn
2219-2840journal_volume
17pub_type
杂志文章abstract:AIM:To investigate whether common variants in the oxidative pathway genes influence inflammatory bowel disease (IBD) risk among Moroccan patients. METHODS:The distribution of (TAAA)n_rs12720460 and (CCTTT)n _rs3833912 NOS2A microsatellite repeats, HIF-1A_rs11549467 and NFKB1-94ins/delATTG_rs28362491 was analyzed in 50...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i47.8300
更新日期:2017-12-21 00:00:00
abstract::A 76-year-old woman with a 5-mo history of recurrent diarrhea and generalized edema was admitted to our hospital. Colonoscopy revealed edematous mucosa, and histopathological examination was compatible with collagenous colitis. Protein leakage from the colon, particularly in the ascending portion, was identified on 99...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.6083
更新日期:2008-10-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i4.665
更新日期:2006-01-28 00:00:00
abstract:AIM:To investigate the relationship between 579 G>T polymorphisms in the DNMT3B gene, which is involved in de novo methylation and associated with the risk of esophagus cancer (EC) in Chinese. METHODS:DNMT3B 579 G>T genotypes were determined by PCR-RFLP in 194 EC patients and 210 healthy controls matched for age and s...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
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更新日期:2014-04-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i42.6656
更新日期:2005-11-14 00:00:00
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journal_title:World journal of gastroenterology
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doi:10.3748/wjg.v16.i20.2504
更新日期:2010-05-28 00:00:00
abstract:AIM:To evaluate the clinic features of eosinophilic gastroenteritis and to examine the diagnosis, treatment, long-term outcome of this disease. METHODS:Charts with a diagnosis of eosinophilic gastroenteritis from 1984 to 2002 at Mackay Memorial Hospital were reviewed retrospectively. There were 15 patients diagnosed w...
journal_title:World journal of gastroenterology
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更新日期:2003-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:2012-06-07 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
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更新日期:2014-09-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
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更新日期:2014-07-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
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更新日期:2008-12-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v22.i1.188
更新日期:2016-01-07 00:00:00
abstract::Dysphagia associated with esophageal mechanical obstruction is usually related to malignant esophageal diseases. Benign lesions are rarely a cause for this type of dysphagia, and usually occur either as an intramural tumor or as an extrinsic compression. Mediastinal tuberculous lymphadenitis is rare in adults, and eve...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.45.6104
更新日期:2007-12-07 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i32.11262
更新日期:2014-08-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v18.i48.7319
更新日期:2012-12-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i6.797
更新日期:2005-02-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.15.198
更新日期:2009-01-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
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更新日期:2013-01-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v21.i43.12430
更新日期:2015-11-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v13.i10.1500
更新日期:2007-03-14 00:00:00
abstract::One potential option for the management of refractory gastro-esophageal reflux disease (GERD) is the delivery of radiofrequency energy to the gastro-esophageal junction (Stretta). This endoscopic therapy is safe, effective, durable, and repeatable if necessary and serves an unmet need for many GERD sufferers. Stretta ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i24.7730
更新日期:2014-06-28 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i21.2918
更新日期:2007-06-07 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v4.i6.485
更新日期:1998-12-01 00:00:00
abstract:AIM:To assess the efficacy and safety of TECA type hybrid artificial liver support system (TECA-HALSS) in providing liver function of detoxification, metabolism and physiology by treating the patients with acute liver failure (ALF). METHODS:The porcine liver cells (1-2) x 10(10) were separated from the Chinese small s...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v7.i6.826
更新日期:2001-12-01 00:00:00
abstract::Helicobacter pylori (H. pylori) affects nearly half of the world's population and, thus, is one of the most frequent and persistent bacterial infections worldwide. H. pylori is associated with peptic ulcer disease, gastric ulcers, mucosa-associated lymphoid tissue lymphoma, and gastric cancer. Various diagnostic metho...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i6.1438
更新日期:2014-02-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i7.1545
更新日期:2003-07-01 00:00:00
abstract::Coeliac disease (CD) is a complex condition resulting from an interplay between genetic and environmental factors. When diagnosing the condition, serological testing and genotyping are useful in excluding CD, although the gold standard of testing is currently histopathological examination of the small intestine. There...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v26.i1.1
更新日期:2020-01-07 00:00:00
abstract::Colonic perforation during endoscopic diagnostic or therapeutic procedures, represents an uncommon occurrence even if, together with haemorrhage, it is still the most common complication of colonoscopy, with an incidence ranging between 0.1% and 2% of all colonoscopic procedures. The ideal treatment in these cases rem...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i20.2889
更新日期:2007-05-28 00:00:00
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
更新日期:1997-12-15 00:00:00