Abstract:
:Hepatitis B virus (HBV) is the leading cause of liver disease and infects an estimated 240 million people worldwide. It is characterised by a high degree of genetic heterogeneity because of the use of a reverse transcriptase during viral replication. The ten genotypes (A-J) that have been described so far further segregate into a number of subgenotypes which have distinct ethno-geographic distribution. Genotypes A and D are ubiquitous and the most prevalent genotypes in Europe (mainly represented by subgenotypes D1-3 and A2); genotypes B and C are restricted to eastern Asia and Oceania; genotype E to central and western Africa; and genotypes H and F (classified into 4 subgenotypes) to Latin America and Alaska. This review summarises the data obtained by studying the global phylodynamics and phylogeography of HBV genotypes, particularly those concerning the origin and dispersion histories of genotypes A, D, E and F and their subgenotypes. The lack of any consensus concerning the HBV substitution rate and the conflicting data obtained using different calibration approaches make the time of origin and divergence of the various genotypes and subgenotypes largely uncertain. It is hypothesised that HBV evolutionary rates are time dependent, and that the changes depend on the main transmission routes of the genotypes and the dynamics of the infected populations.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Zehender G,Ebranati E,Gabanelli E,Sorrentino C,Lo Presti A,Tanzi E,Ciccozzi M,Galli Mdoi
10.3748/wjg.v20.i24.7622subject
Has Abstractpub_date
2014-06-28 00:00:00pages
7622-34issue
24eissn
1007-9327issn
2219-2840journal_volume
20pub_type
杂志文章,评审abstract:BACKGROUND:Esophageal cancer is one of the most common cancers around the world, and it has high incidence and mortality rates. The conventional therapy for esophageal cancer is radiotherapy, although its effect is highly limited by the resistance of esophageal cancer cells. Thus, strong radiosensitizers can be very cr...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v25.i20.2463
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abstract:AIM:To discuss the rationality of extended radical resection (ERR) and to guide the surgical treatment of rectal cancer. METHODS:Total 211 patients who underwent ERR from 1981 to 1987 (follow-up rate of 94.8 %) were selected to study the patterns of lymphatic metastasis and therapeutic effect. The control group was ma...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i5.970
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abstract::Bowel preparation is a core issue in colonoscopy, as it is closely related to the quality of the procedure. Patients often find that bowel preparation is the most unpleasant part of the examination. It is widely accepted that the quality of cleansing must be excellent to facilitate detecting neoplastic lesions. In spi...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v20.i47.17709
更新日期:2014-12-21 00:00:00
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journal_title:World journal of gastroenterology
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doi:10.3748/wjg.v13.i28.3847
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i27.4250
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v21.i27.8284
更新日期:2015-07-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v17.i10.1308
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abstract::Cytomegalovirus (CMV) infection is a common complication after liver transplantation, and it is associated with multiple direct and indirect effects. Management of CMV infection and disease has evolved over the years, and clinical guidelines have been recently updated. Universal antiviral prophylaxis and a pre-emptive...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
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更新日期:2014-08-21 00:00:00
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pub_type: 杂志文章
doi:10.3748/wjg.v23.i31.5746
更新日期:2017-08-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i38.6416
更新日期:2013-10-14 00:00:00
abstract::We report a case of hepatocellular carcinoma (HCC) occurring in a patient with Crohn's disease (CD) without chronic hepatitis or liver cirrhosis, and review the clinicopathological features of HCC in CD patients. A 37-year-old Japanese man with an 8-year history of CD and a medication history of azathioprine underwent...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v16.i25.3215
更新日期:2010-07-07 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i3.460
更新日期:2005-01-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.5650
更新日期:2008-10-07 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i29.4570
更新日期:2005-08-07 00:00:00
abstract:AIM:To make a retrospective analysis of endoscopy findings and clinicopathologic characteristics of colonic schistosomiasis in order to further improve our understanding of the disease and decrease its misdiagnosis. METHODS:Endoscopy findings and clinicopathologic characteristics of 46 intestinal schistosomiasis patie...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v16.i6.723
更新日期:2010-02-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i34.5266
更新日期:2005-09-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i22.3466
更新日期:2013-06-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v24.i37.4272
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,多中心研究
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更新日期:2012-09-21 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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journal_title:World journal of gastroenterology
pub_type: 杂志文章,随机对照试验
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更新日期:2012-11-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i43.7813
更新日期:2013-11-21 00:00:00
abstract::A primary clear cell adenocarcinoma of the colon is a rare oncologic entity. We herein report a case of such a tumor of the sigmoid colon in a 71-year-old woman who was successfully treated by an endoscopic polypectomy in our hospital. We also reviewed the published reports regarding cases of primary clear cell tumors...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
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更新日期:2008-02-21 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:2016-12-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v17.i30.3526
更新日期:2011-08-14 00:00:00
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
更新日期:2020-03-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v7.i1.37
更新日期:2001-02-01 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v11.i19.2975
更新日期:2005-05-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
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更新日期:1999-02-01 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.i17.4892
更新日期:2014-05-07 00:00:00