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Updated: Mar 16, 2026
Use of In vivo Imaging to Monitor the Progression of Experimental Mouse Cytomegalovirus Infection in Neonates
Published on: July 6, 2013
Abstract:
Cytomegalovirus (CMV) infects approximately 40-90% of the world population. The infection is usually asymptomatic in immunocompetent persons. However, it may have negative impact on physiological status or accompanying diseases especially in the elderly. In particular, increasing number of data suggests that persistent infection with CMV is associated with accelerated aging of the immune system accompanying by the decrease in the number of naïve T cells, the increase in in the number of late-differentiated T cells, and reduced TCD4/ TCD8 ratio. This constellation reduces immunity against a variety of diseases, including infectious diseases, cancer, autoimmune diseases, and alters the response to vaccinations. CMV infection could also influence the pathophysiology of age-related diseases, including cardiovascular diseases, however, the mechanism of such influence is still not clear. It is not clear as well, whether CMV infection influences the all-cause and cardiovascular diseases-related mortality. In conclusion, CMV infection could intensify immunosenescence and contribute to age-related diseases, but inconsistent results of many experiments do not allow currently to define clear guidelines for the treatment of CMV infection in elderly.
Insights
Cytomegalovirus (CMV) infection can accelerate immune system aging in the elderly, potentially worsening age-related diseases and reducing vaccine effectiveness. Further research is needed to clarify its impact on mortality and guide treatment.
Area of Science:
- Immunology
- Gerontology
- Infectious Diseases
Context:
- Cytomegalovirus (CMV) is a widespread herpesvirus, typically asymptomatic in healthy individuals.
- In the elderly, persistent CMV infection is increasingly linked to detrimental physiological changes and comorbidities.
- Growing evidence suggests CMV contributes to immunosenescence, the aging of the immune system.
Purpose:
- To explore the association between persistent Cytomegalovirus infection and accelerated immune system aging in the elderly.
- To investigate the impact of CMV on T cell populations (naïve, late-differentiated) and TCD4/TCD8 ratios.
- To examine the potential role of CMV in age-related diseases, immune function, and mortality.
Summary:
- Persistent Cytomegalovirus (CMV) infection is associated with accelerated immune aging in older adults.
- This includes a decrease in naïve T cells, an increase in late-differentiated T cells, and a reduced TCD4/TCD8 ratio.
- CMV may impair immunity against infections, cancer, and autoimmune diseases, and affect vaccine responses.
Impact:
- CMV infection may exacerbate immunosenescence, increasing vulnerability to various diseases in the elderly.
- It could influence the pathophysiology of age-related conditions like cardiovascular disease, though mechanisms remain unclear.
- The precise impact of CMV on all-cause and cardiovascular mortality requires further investigation, hindering clear treatment guidelines.
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