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Gene-environmental interactions and MS progression focus of study
A grant from the Department of Defense is allowing Murali Ramanathan to test whether three environmental factors contribute to the progression of multiple sclerosis. Photo: DOUGLAS LEVERE
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“Identifying gene-environmental interactions is critical for developing better strategies for slowing the progression of MS because it could enable patients with pre-existing genetic risk factors to reduce the rate of disease progression through lifestyle modification.”
A $634,000 grant from the Department of Defense is allowing UB researchers to investigate a trio of environmental factors and their influence on the progression of multiple sclerosis.
The two-year project, headed by Murali Ramanathan, professor of pharmaceutical sciences and neurology, tests the hypothesis that nicotine metabolism, the byproducts of vitamin D metabolism and increased levels of anti-Epstein-Barr virus (EBV) each interact with variations in specific genes to cause increased neurodegeneration and increased lesions in MS patients.
The study is a collaboration between UB and investigators from Charles University in Prague, Czech Republic, and will be conducted on samples obtained at both universities’ MS centers.
The research aims to identify gene-environmental interactions between key molecules in the vitamin D pathway, anti-Epstein-Barr virus antibodies, cigarette smoking and key genetic variants that are implicated in conversion of patients with clinically isolated syndrome (CIS) to definite MS.
Researchers will assess the risk of developing clinically definite MS and the time to progression, as well as the neurodegeneration in the brain of MS patients, as measured by brain atrophy, and the extent of brain injury caused by lesions.
“We will use a novel approach to measure the levels of vitamin D and its metabolites, EBV exposure and nicotine metabolites from cigarette smoking,” says Ramanathan. “We have developed sensitive and selective measurements for key metabolites in the vitamin D and nicotine metabolism pathways using mass spectrometry, a method that has not been used previously to study vitamin D metabolism.”
The novel study design will include the genetic variations that were associated with the risk of developing MS, as well as genes that determine the levels and responses to environmental factors. MS patients will be divided into two equal groups: a training group that will be used to identify gene-environmental interactions, and a group that will be used to replicate the training group result.
“Identifying gene-environmental interactions is critical for developing better strategies for slowing the progression of MS because it could enable patients with pre-existing genetic risk factors to reduce the rate of disease progression through lifestyle modification,” Ramanathan says.
The study results will identify the gene-environment interactions that promote disease progression in MS and facilitate the development of preventive and therapeutic interventions for MS that disrupt these interactions, notes Ramanathan.
Bianca Weinstock-Guttman, Robert Zivadinov and Jun Qu, all of UB, are study co-principal investigators. Dana Horakova and Eva Havrdova are collaborators at Charles University in Prague.
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