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Novel replication-competent circular DNA molecules from healthy cattle serum and milk and multiple sclerosis-affected
Corinna Whitley1, Karin Gunst1, Hermann Müller2
1Division for the Characterization of Tumorviruses, Deutsches Krebsforschungszentrum, Heidelberg, Germany.
Abstract:
Epidemiological data point to the involvement of a cow milk factor in the etiology of multiple sclerosis (MS). Eleven circular DNA molecules closely related to transmissible spongiform encephalopathy (TSE)-associated isolate Sphinx 1.76 were isolated from healthy cattle serum, cow milk, and serum and brain tissue from MS patients.
Insights
Researchers identified circular DNA molecules in cow milk and MS patient tissues, suggesting a potential link between bovine factors and multiple sclerosis (MS) etiology.
Area of Science:
- Neuroscience
- Microbiology
- Epidemiology
Background:
- Epidemiological studies suggest a potential role for cow milk in the development of multiple sclerosis (MS).
- The etiology of MS remains complex and multifactorial, with environmental factors under investigation.
Purpose of the Study:
- To investigate the presence of specific DNA molecules in cow milk and their potential association with multiple sclerosis.
- To explore a potential link between bovine-associated agents and the pathogenesis of MS.
Main Methods:
- Isolation of circular DNA molecules from various biological samples.
- Comparison of isolated DNA with known transmissible spongiform encephalopathy (TSE)-associated isolates.
- Analysis of samples from healthy cattle, cow milk, and multiple sclerosis patients (serum and brain tissue).
Main Results:
- Eleven circular DNA molecules, related to the TSE-associated isolate Sphinx 1.76, were successfully isolated.
- These DNA molecules were detected in healthy cattle serum, cow milk, and in serum and brain tissue from MS patients.
Conclusions:
- The findings suggest a potential cow milk-borne factor associated with multiple sclerosis.
- Circular DNA molecules related to TSE agents may be involved in the etiology of multiple sclerosis.
