[Varicella-zoster virus (VZV)].
Kyosuke Kanai1, Souichi Yamada, Naoki Inoue
1Laboratory of Herpesviruses, Department of Virology I, National Institute of Infectious Diseases 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640.
Uirusu
|April 15, 2011
Summary
Varicella-zoster virus (VZV) causes chickenpox and shingles. This review covers VZV infection models, spread, entry, unique genes, immune responses, and treatments, offering insights into alpha-herpesvirus biology.
Area of Science:
- Virology
- Immunology
- Infectious Diseases
Context:
- Varicella-zoster virus (VZV), an alpha-herpesvirus, causes primary varicella and reactivated zoster.
- VZV shares similarities with herpes simplex virus (HSV) but possesses unique biological traits.
Purpose:
- To review recent research on VZV, focusing on its unique characteristics and pathogenesis.
- To consolidate findings on VZV animal models, viral dissemination, cellular entry, gene functions, host immunity, and therapeutic strategies.
Summary:
- The review examines VZV infection through animal models, detailing viral spread from respiratory mucosa via T cells to the skin.
- It explores cellular receptors for VZV entry, the functions of VZV-specific genes essential for in vivo replication and latency, and host immune responses including viral immune evasion.
- Current advancements in varicella vaccines and anti-VZV drugs are also discussed.
Impact:
- Provides a comprehensive overview of VZV biology, aiding researchers in understanding herpesvirus pathogenesis.
- Highlights key areas for developing novel VZV therapies and preventative strategies.
- Facilitates comparative studies between VZV and other alpha-herpesviruses like HSV.
Related Concept Videos
Chickenpox
Chickenpox is an acute, highly contagious disease caused by the varicella-zoster virus (VZV), a double-stranded DNA virus belonging to the Herpesviridae family. Its transmission occurs primarily through the inhalation of respiratory droplets or direct contact with vesicular fluid from skin lesions. The incubation period typically ranges from 10 to 21 days, during which the virus replicates and disseminates through sequential phases within the host. Although generally self-limiting in children,...
Genital Herpes
Genital herpes is a sexually transmitted infection primarily caused by herpes simplex virus type 2 (HSV-2), though herpes simplex virus type 1 (HSV-1) is increasingly implicated in genital infections, particularly among younger populations. Transmission occurs mainly through sexual contact, with asymptomatic viral shedding serving as a major route of spread. This characteristic makes HSV-2 difficult to control at a population level, as individuals may unknowingly transmit the virus even in the...
Herpes
Herpes simplex type 1 (HSV‑1) is a widespread pathogen responsible for orolabial lesions. It is an enveloped, double-stranded DNA (dsDNA) virus belonging to the family Herpesviridae. Once the virus infects a host cell, its double‑stranded DNA genome is delivered into the nucleus, where a coordinated cascade of immediate‑early, early, and late gene expression directs viral DNA replication, structural protein synthesis, and virion assembly. After primary infection of epithelial cells, HSV-1...
Smallpox
Smallpox is a severe contagious disease caused by the Variola major virus, a double-stranded DNA member of the Poxviridae family.Variola major transmission occurs primarily via inhalation of virus-laden droplets or direct contact with infectious scabs. The incubation period averages approximately seven days, although it may range from 7 to 17 days depending on the inoculum and host factors.Clinically, the prodromal phase is marked by an abrupt onset of high fever, malaise, headache, and myalgia.
Cytomegalovirus Disease
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...
Rabies
Rabies is a lethal zoonotic disease caused by a single-stranded, negative-sense RNA virus of the Lyssavirus genus, within the family Rhabdoviridae. Its primary mode of transmission to humans is through bites or saliva-contaminated scratches from infected mammals such as dogs, bats, raccoons, or foxes. Transmission can also occur if infectious saliva contacts abraded skin or intact mucous membranes, including the conjunctiva.Viral Entry and Early ReplicationOnce introduced at the bite or scratch...


