Related Experiment Videos
Herpesvirus and multiple sclerosis
1Department of Pediatrics, Sealy Center for Vaccine Development, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555-0739, USA. ansimmon@utmb.edu
Abstract:
Evidence suggests that multiple sclerosis (MS) is caused by host genetic factors in association with one or more environmental agents. The clinical and pathological features of MS implicate viral infections as either cofactors in its aetiology or triggers of relapses, although no specific environmental factors have been identified. In particular, several herpesviruses have attracted interest because their ability to cause latent infections that periodically reactivate has some familiarity with the relapsing-remitting course of MS. Further, most human herpesviruses can be readily found within the central nervous system and several are known to be capable of inducing demyelination, both in humans and in experimentally infected animals. This brief review takes a systematic look at reported associations between herpesviruses and MS and suggests some criteria that must be met in further studies. One of the greatest challenges in confirming or refuting a role for herpesviruses in chronic diseases is their ubiquitous nature. It is stated from the outset that the associations described here remain controversial.
Insights
Multiple sclerosis (MS) may involve environmental factors like herpesviruses, which can cause latent infections and demyelination. Further research is needed to confirm their role in MS etiology, despite controversial associations.
Area of Science:
- Neuroimmunology
- Virology
Background:
- Multiple sclerosis (MS) etiology is linked to genetic and environmental factors.
- Viral infections, particularly herpesviruses, are investigated as potential MS cofactors or triggers due to their latency and ability to cause demyelination.
Purpose of the Study:
- To systematically review reported associations between herpesviruses and multiple sclerosis.
- To propose criteria for future studies investigating herpesvirus involvement in MS.
Main Methods:
- Systematic review of literature on herpesvirus associations with MS.
- Analysis of herpesvirus characteristics relevant to MS pathology (latency, reactivation, neurotropism, demyelination).
Main Results:
- Herpesviruses exhibit characteristics aligning with MS pathology, including latency, reactivation, CNS presence, and demyelination potential.
- Reported associations between herpesviruses and MS remain controversial.
Conclusions:
- Herpesviruses are plausible candidates in MS etiology, but their definitive role requires further investigation.
- Establishing causality is challenging due to the ubiquitous nature of herpesviruses and the controversial nature of current evidence.