Human Cytomegalovirus Infection and Neurocognitive and Neuropsychiatric Health

Area of Science:

• Virology
• Neuroscience
• Public Health

Background:

• Human cytomegalovirus (HCMV) is a widespread herpesvirus infection.
• HCMV infection is associated with diverse health conditions, ranging from cardiovascular disease and cancers to neurological and psychiatric disorders.
• Congenital or early-life HCMV infection poses risks for developmental issues in children, including microcephaly, cerebral palsy, and sensorineural hearing loss.

Purpose of the Study:

• To review the current associations between HCMV infection and various neurocognitive, psychiatric, and neurological conditions.
• To highlight the inconsistencies in existing research findings regarding HCMV's impact on brain health.
• To emphasize the need for further research, including meta-analyses and longitudinal studies, to clarify these relationships.

Main Methods:

• Review of existing literature on human cytomegalovirus (HCMV) and its association with neurological, cognitive, and psychiatric disorders.
• Analysis of studies examining HCMV's role in conditions such as Alzheimer's disease, vascular dementia, depression, anxiety, and autism spectrum disorder.
• Identification of inconsistencies and gaps in the current research landscape.

Main Results:

• HCMV is linked to a spectrum of neurocognitive and neuropsychiatric conditions, affecting individuals across all age groups.
• Inconsistencies exist in studies associating HCMV with cognitive decline in adults, Alzheimer's disease, and vascular dementia.
• Research also shows inconsistent links between HCMV and mental health disorders like depression, bipolar disorder, anxiety, and autism spectrum disorder.

Conclusions:

• Significant inconsistencies in current research necessitate further investigation into the relationship between HCMV and neurocognitive/neuropsychiatric disorders.
• Additional meta-analyses and longitudinal studies are crucial for a clearer understanding of these associations.
• Future research focusing on antiviral therapies and vaccine development holds promise for mitigating the neurological and neuropsychiatric burden of HCMV infection.