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Has the virus of multiple sclerosis been isolated?
Abstract:
There have been many attempts to isolate infectious agents from patients with multiple sclerosis (MS), and many viruses have been incriminated at one time or another over the past few decades. However, in every case further research has disproved the original claim. Thus, we cautiously report on the isolation of four antigenically related agents from the cerebrospinal fluid (CSF) of three patients with MS and one patient with amyotrophic lateral sclerosis. The patients yielding the isolates from their CSF possessed neutralizing antibodies to the virus in their blood, in contrast to several other virus-free patients with chronic central nervous system (CNS) diseases studied at the same time. The virus could not be isolated from 27 patients who were not suffering from chronic disease of the CNS. The agent has not yet been adequately characterized, but it deserves further attention because it seems to be a hitherto unknown virus, difficult to isolate and difficult to work with in the laboratory. Its isolation from the four patients mentioned above (and subsequently in several other MS patients) warrants further investigation of its potential role in MS and other progressive diseases of the CNS.
Insights
Researchers cautiously report isolating novel, antigenically related viral agents from cerebrospinal fluid of patients with multiple sclerosis (MS) and amyotrophic lateral sclerosis (ALS). These findings warrant further investigation into the potential role of this virus in progressive central nervous system diseases.
Area of Science:
- Neurology
- Virology
- Infectious Diseases
Background:
- Multiple sclerosis (MS) research has a history of investigating infectious agents, with previous viral claims being disproven.
- Identifying causative agents in chronic central nervous system (CNS) diseases remains a significant challenge.
Purpose of the Study:
- To cautiously report the isolation of novel viral agents from patients with neurological disorders.
- To investigate the presence of neutralizing antibodies in patients from whom the virus was isolated.
Main Methods:
- Isolation of viral agents from cerebrospinal fluid (CSF) of patients with MS and amyotrophic lateral sclerosis (ALS).
- Detection of neutralizing antibodies in patient blood samples.
- Comparison with virus-free patients with chronic CNS diseases and patients without chronic CNS disease.
Main Results:
- Four antigenically related viral agents were isolated from the CSF of three MS patients and one ALS patient.
- Patients yielding isolates possessed neutralizing antibodies to the virus in their blood.
- The virus was not isolated from 27 patients without chronic CNS disease, suggesting specificity.
- The isolated agent is difficult to characterize and work with in the laboratory.
Conclusions:
- The isolation of these novel viral agents from MS and ALS patients warrants further investigation.
- The findings suggest a potential, previously unrecognized viral role in progressive CNS diseases like MS.
- Further research is needed to adequately characterize the agent and confirm its etiological significance.