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Updated: May 9, 2026

A Primary Neuron Culture System for the Study of Herpes Simplex Virus Latency and Reactivation

A Primary Neuron Culture System for the Study of Herpes Simplex Virus Latency and Reactivation

Published on: April 2, 2012

Exposure to herpes simplex virus, type 1 and reduced cognitive function.

Pramod Thomas¹, Triptish Bhatia, Deepak Gauba

¹Department of Bio-Statistics, Dr S.M.C.S.I. Medical College, Karakonam, Thiruvananthapuram, Kerala, India.

Journal of Psychiatric Research

|August 8, 2013

Summary

Herpes simplex virus type 1 (HSV-1) exposure is linked to cognitive decline in both healthy individuals and schizophrenia patients. However, HSV-1 does not increase schizophrenia risk, affecting cognition independently.

Keywords:

Cognition HSV-1 Herpes simplex Memory Schizophrenia Virus

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Porcine Corneal Tissue Explant to Study the Efficacy of Herpes Simplex Virus-1 Antivirals

Published on: September 20, 2021

Area of Science:

Neuroscience
Infectious Diseases
Psychiatry

Background:

Herpes simplex virus type 1 (HSV-1) causes lifelong infections, establishing latency in sensory ganglia.
HSV-1 exposure is increasingly linked to cognitive deficits in healthy individuals and those with schizophrenia (SZ).
The specific cognitive domains affected by HSV-1 and potential interactions with SZ-related factors require systematic investigation.

Purpose of the Study:

To systematically investigate the range of cognitive changes associated with HSV-1 exposure.
To determine if HSV-1 exposure interacts with schizophrenia (SZ) to exacerbate cognitive impairment.
To assess the independent effects of HSV-1 exposure and SZ on cognitive function.

Main Methods:

Recruited 298 participants (with or without SZ/schizophreniform disorder) meeting DSM IV criteria.
Assessed HSV-1 exposure via serum antibody titers.
Evaluated cognitive function across eight domains using the Penn Computerized Neurocognitive battery (accuracy and speed).

Main Results:

No significant differences in HSV-1 exposure rates were found between SZ cases and controls.
SZ/schizophreniform disorder cases demonstrated significant impairment across all cognitive domains compared to controls.
HSV-1 exposure was associated with reduced cognitive function in the overall sample, with distinct patterns from SZ-related changes.
No statistically significant interactions were detected between HSV-1 exposure and SZ status.

Conclusions:

HSV-1 exposure is associated with cognitive impairment in specific domains, independent of schizophrenia diagnostic status.
HSV-1 does not elevate the risk for developing schizophrenia.
An 'epidiagnostic' model is proposed to explain the observed associations between HSV-1 exposure and cognitive function.