Cytopathic effect (CPE), structural changes in a host cell resulting from viral infection. CPE occurs when the infecting virus causes lysis (dissolution) of the host cell or when the cell dies without lysis because of its inability to reproduce.
What can cytopathic effects include?
Morphologic Effects: The changes in cell morphology caused by infecting virus are called cytopathic effects (CPE). Common examples are rounding of the infected cell, fusion with adjacent cells to form a syncytia (polykaryocytes), and the appearance of nuclear or cytoplasmic inclusion bodies.
Why is the cytopathic effect valuable?
Laboratory Diagnosis of Viral Diseases The speed and nature of the cytopathic effect caused by different viruses varies considerably. Cytopathic effect must always be based on comparison with uninoculated cell cultures; this is particularly important for viruses requiring incubation periods of longer than a week.
What is meant by cytopathic?
: of, relating to, characterized by, or producing pathological changes in cells.
Which body system is mainly affected by Creutzfeldt Jakob disease?
Creutzfeldt-Jakob disease greatly affects the brain and body. CJD usually progresses quickly.
What are the symptoms of CJD in humans?
Symptoms of CJD
- loss of intellect and memory.
- changes in personality.
- loss of balance and co-ordination.
- slurred speech.
- vision problems and blindness.
- abnormal jerking movements.
- progressive loss of brain function and mobility.
How are cytopathic effects detected in a cell?
Choose the statement that indicates how cytopathic effects are detected. Examining infected cells with a microscope. Order the following steps to reflect the order in which they occur in the life cycle of an animal virus. 1. Adsorption (attachment) to host cell surface 2. Penetration and uncoating 3. Synthesis of viral nucleic acid and proteins 4.
How is the Pap test related to cytopathogenic effect?
Pap test. Pap stain. Cytopathic effect or cytopathogenic effect (abbreviated CPE) refers to structural changes in host cells that are caused by viral invasion. The infecting virus causes lysis of the host cell or when the cell dies without lysis due to an inability to reproduce. Both of these effects occur due to CPEs.
How often should cell cultures be used for cytopathic effect?
Cultures are observed daily for cytopathic effects. The speed and nature of the cytopathic effect caused by different viruses varies considerably. Cytopathic effect must always be based on comparison with uninoculated cell cultures; this is particularly important for viruses requiring incubation periods of longer than a week.
What is the role of cytopathic effect in tumorigenesis?
Tumorigenesis involves a multistep process that confers on virus-transformed cells; the ability to grow in the host animal. The cytopathic effect of viruses and the immune response of the host combine to produce the clinical syndrome of a particular infection, and variations in both these factors may account for the different clinical responses.
