Nervous Necrosis Virus
Nervous Necrosis Virus - Related Videos
01:16
Necrosis
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2023
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”. Morphological Manifestations of Necrosis Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
03:33
Intrathecal Delivery of Viruses in a Mouse Model for Treating Central Nervous System Diseases
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2025
Source: Li, D., et al. Direct Intrathecal Injection of Recombinant Adeno-associated Viruses in Adult Mice. J. Vis. Exp. (2019)This video demonstrates the procedure for the intrathecal injection of adeno-associated viruses (AAV) into the cerebrospinal fluid (CSF) of an awake mouse, covering syringe preparation, spinal alignment, and precise needle insertion. This method validates targeted gene delivery, supporting its potential for CNS therapies.
01:25
What is a Nervous System?
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2019
Overview The nervous system is the collection of specialized cells responsible for maintaining an organism’s internal environment and coordinating the interaction of an organism with the external world—from the control of essential functions such as heart rate and breathing to the movement needed to escape danger. Parts of the Nervous System The vertebrate nervous system is divided into two major parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS...
08:11
Methods and Tips for Intravenous Administration of Adeno-associated Virus to Rats and Evaluation of Central Nervous System Transduction
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Cited by 7 •
2017
Methods for a wide-scale central nervous system gene delivery in the rat are covered. In this example, the purpose is to mimic a disease that affects the entire spinal cord. The widespread transduction can be used to deliver a therapeutic protein to the CNS from a one-time, peripheral administration.
01:14
The Parasympathetic Nervous System
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2019
Overview The parasympathetic nervous system is one of the two major divisions of the autonomic nervous system. This parasympathetic system is responsible for regulating many unconscious functions, such as heart rate and digestion. It is composed of neurons located in both the brain and the peripheral nervous system that send their axons to target muscles, organs, and glands. The “Rest and Digest” System Activation of the parasympathetic system tends to have a relaxing effect on the body,...
FAQs
Once Nervous Necrosis Virus reaches susceptible fish, it replicates in neural tissues. This activity is associated with vacuolation, meaning abnormal fluid-filled spaces, and neuronal degeneration, or damage to nerve cells. These tissue changes help explain abnormal swimming and can accompany severe disease and high mortality, especially during early life stages.
Larvae and juveniles are emphasized because they can experience particularly severe disease and high mortality after infection. Their susceptibility makes early-life stages important for studying how host age relates to disease outcomes. This focus also matters for aquaculture, where losses during development can affect stock survival and disease-management priorities.
NNV provides a model for examining antiviral defenses in fish, including innate immune signaling and interferon responses. These defenses represent early host reactions to infection and help researchers investigate how fish respond before protective antibodies develop. Studying them clarifies immune mechanisms that may guide disease-control research and protective strategy development.
Protective antibodies are important because they represent an immune response that may contribute to protection against NNV. Research can therefore examine how infection or vaccination relates to antibody development and immune protection. This connection links basic immunology with vaccine development and helps frame which immune outcomes are relevant to controlling disease.
NNV research supports diagnostic testing by connecting infection with recognizable disease outcomes, including neural tissue damage, vacuolation, neuronal degeneration, and abnormal swimming. Diagnostic work is important for identifying affected fish and distinguishing disease concerns within aquaculture settings. The resulting information can support decisions about monitoring, investigation, and disease management.
Understanding transmission and host susceptibility helps explain how NNV-associated disease may affect fish populations and why some groups experience greater risk or more severe outcomes. These topics provide essential context for aquaculture disease-management strategies, while also connecting infection biology with practical efforts to reduce losses and protect vulnerable stocks.