Related Experiment Video
Updated: May 25, 2026
06:44
Confocal Imaging of Double-Stranded RNA and Pattern Recognition Receptors in Negative-Sense RNA Virus Infection
Published on: January 26, 2019
Arboviral encephalitis and RNAi treatment
Maurício L Nogueira1, Mara Correa Lelles Nogueira, Carolina Pacca
1Laboratório de Pesquisas em Virologia, Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto. Av. Brigadeiro Faria Lima 5416, São José do Rio Preto, SP, Brazil. mauricio.nogueira@pq.cnpq.br
Central Nervous System Agents in Medicinal Chemistry
|February 4, 2012
Summary
Acute encephalitis, an inflammatory brain condition, is commonly caused by viruses. This overview details Flavivirus and Alphavirus families, crucial for understanding viral encephalitis and RNA interference mechanisms.
Area of Science:
- Neurology
- Virology
- Immunology
Background:
- Encephalitis is an acute inflammatory brain condition.
- Key symptoms include fever, headache, and altered mental status.
- Viral infections are the primary cause of encephalitis.
Purpose of the Study:
- To provide a general overview of common viral encephalitides.
- To discuss the Flavivirus and Alphavirus families.
- To explain the role of RNA interference in viral encephalitis.
Main Methods:
- Literature review of viral encephalitis.
- Classification of viruses into Flavivirus and Alphavirus families.
- Discussion of viral mechanisms and RNA interference.
Main Results:
- Viral infections are the most significant cause of encephalitis.
- Flaviviruses and Alphaviruses represent common viral families responsible for encephalitis.
- RNA interference plays a role in the pathogenesis of viral encephalitis.
Conclusions:
- Understanding viral encephalitis, particularly Flavivirus and Alphavirus infections, is critical.
- Further research into RNA interference mechanisms may offer therapeutic targets.
Related Concept Videos
01:25Arboviral Encephalitis
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...
01:19Encephalitis l: Introduction
Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
01:26Encephalitis ll: Pathophysiology
Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
01:29Viruses with RNA Genomes
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...
01:23RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
01:23RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...