How does cytomegalovirus affect cells?

How does cytomegalovirus affect cells?

The virus infects epithelial cells, macrophages, and T lymphocytes. Epithelial cells when infected by CMV produce more virus. CMV is highly cell-associated and causes cells to coalesce to form large cells. The close cell interaction protects the virus from antibody inactivation.

What cells are infected by CMV?

Epithelial cells, endothelial cells, fibroblasts and smooth muscle cells are the predominant targets for virus replication. The pathogenesis of acute HCMV infections is greatly influenced by this broad target cell range. Infection of epithelial cells presumably contributes to inter-host transmission.

What is the structure of cytomegalovirus?

The human cytomegalovirus structure consists of an outer lipid bilayer envelope, composed of various viral glycoproteins, followed by the tegument, a proteinaceous matrix, which holds double stranded linear DNA core in an icosahedral nucleocapsid. The virion is usually spherical in composition [14].

What is the purpose of glycoprotein on the virus?

Glycoproteins are molecules that comprise protein and carbohydrate chains that are involved in many physiological functions including immunity. Many viruses have glycoproteins that help them enter bodily cells, but can also serve to be important therapeutic or preventative targets.

How do you get cytomegalovirus?

People with CMV may pass the virus in body fluids, such as saliva, urine, blood, tears, semen, and breast milk. CMV is spread from an infected person in the following ways: From direct contact with saliva or urine, especially from babies and young children. Through sexual contact.

How is CMV treated?

Treatment of CMV Infection Mild cytomegalovirus infection is usually not treated. It subsides on its own. When the infection threatens life or eyesight, an antiviral drug (valganciclovir, ganciclovir, cidofovir, foscarnet, or a combination) may be given. These drugs may be given by mouth or by vein.

Is cytomegalovirus a herpesvirus?

What is Cytomegalovirus (CMV)? CMV is a common virus that infects 50 to 80 percent of people at some time during their lives but rarely causes obvious illness. It is a member of the herpesvirus family.

Is CMV a STD?

CMV can be sexually transmitted. It can also be transmitted via breast milk, transplanted organs and, rarely, blood transfusions. Although the virus is not highly contagious, it has been shown to spread in households and among young children in day care centers.

Where are glycoproteins made?

Glycoprotein synthesis occurs in two organelles in sequence such as endoplasmic reticulum and the Golgi apparatus. The carbohydrate core is attached to the protein both co-translationally and post-translationally. The ribosome bearing the mRNA which codes for the proteins attaches to the endoplasmic reticulum.

Who are the natural hosts of cytomegalovirus 5?

Humans and monkeys serve as natural hosts. The 11 species in this genus include human betaherpesvirus 5 (HCMV, human cytomegalovirus, HHV-5), which is the species that infects humans. Diseases associated with HHV-5 include mononucleosis, and pneumonia.

How many species of cytomegalovirus are there?

The 11 species in this genus include human betaherpesvirus 5 (HCMV, human cytomegalovirus, HHV-5), which is the species that infects humans. Diseases associated with HHV-5 include mononucleosis, and pneumonia. In the medical literature, most mentions of CMV without further specification refer implicitly to human CMV.

Which is the most common CMV in humans?

The most studied is Human cytomegalovirus (HCMV), which is also known as Human betaherpesvirus 5 (HHV-5). Other primate CMV species include Chimpanzee cytomegalovirus (CCMV) that infects chimpanzees and orangutans, and Simian cytomegalovirus (SCCMV) and Rhesus cytomegalovirus (RhCMV) that infect macaques;

How big is the genome of HCMV virus?

For instance, the double‑stranded DNA (dsDNA) genome of wild-type HCMV strains has a size of around 235 kb and encodes at least 208 proteins. It is thus longer than all other human herpesviruses and one of the longest genomes of all human viruses in general.