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相关概念视频

Hepatitis01:25

Hepatitis

80
Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver.
80
Viral Hepatitis I: Introduction01:28

Viral Hepatitis I: Introduction

21
Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion...
21
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

96
Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
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Viruses with RNA Genomes01:29

Viruses with RNA Genomes

1.5K
RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
1.5K
Arboviral Encephalitis01:25

Arboviral Encephalitis

53
Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
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Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection
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乙型肝炎病毒感染的B型肝炎病毒感染.

Christian Trépo1, Henry L Y Chan2, Anna Lok3

  • 1Department of Hepatology, Croix-Rousse Hospital, Hospices Civils de Lyon, Lyon, France; INSERM U1052, Lyon, France.

Lancet (London, England)
|June 24, 2014
PubMed
概括
此摘要是机器生成的。

在全球范围内,乙型肝炎病毒感染影响了30%的患者. 虽然疫苗接种减少了患病率,但长期抗病毒治疗可以逆转肝损伤并降低癌症风险,但需要针对HBsAg清除的新疗法.

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科学领域:

  • 肝病学 肝病学是一种肝病学.
  • 病毒学 病毒学
  • 免疫学 免疫学 免疫学

背景情况:

  • 乙型肝炎病毒 (HBV) 感染是一个重大的全球健康问题,约有30%的世界人口表现出感染的血清学证据.
  • 乙型肝炎病毒是一种通过血液和精液传播的DNA病毒,具有肝硬化和肝细胞癌的风险,特别是在患有围产期获得感染的人群中.

研究的目的:

  • 总结目前对乙型肝炎病毒感染的理解,包括其流行病学,传播和病原性.
  • 突出疫苗接种和抗病毒疗法对HBV感染结果的影响.
  • 强调需要新的治疗策略,以改善HBsAg清除和病毒治疗.

主要方法:

  • 对全球乙型肝炎病毒流行情况的流行病学数据的审查.
  • 分析宿主免疫反应在HBV病原和病毒控制中的作用.
  • 评估现有疫苗和抗病毒治疗的疗效.
  • 讨论慢性HBV感染中肝损伤和疾病进展的机制.

主要成果:

  • 自1981年以来,婴儿普遍接种疫苗导致HBV流行率大幅下降.
  • 乙型肝炎病毒不是直接的细胞病变;肝损伤是由病毒复制和宿主免疫反应之间的相互作用造成的.
  • 长期的抗病毒治疗可以减少肝炎,逆转肝硬化,并降低肝细胞癌的风险.

结论:

  • 乙型肝炎病毒感染仍然是一个重大的公共卫生问题,需要持续的管理和预防策略.
  • 虽然目前的治疗方法在控制病毒复制和疾病进展方面是有效的,但实现完整的病毒治愈和HBsAg清除仍然是一个挑战.
  • 进一步的研究和开发新疗法对于改善慢性乙型肝炎感染患者的治疗结果和努力寻找病毒治疗方法至关重要.