Multiple sclerosis risk is lower in HIV-infected patients, according to a new study.
The association apparently comes from the chronic dampening down of the immune system associated with HIV, along with the antiretroviral medications taken to treat HIV. If found causal in future studies, this association may offer insight on possible new treatments for multiple sclerosis (MS).
The researchers followed a case of an HIV man with MS whose symptoms disappeared for 12 years after he began his antiretroviral treatment. The researchers attempted to find out if antiretroviral medications may treat or slow down the progression of multiple sclerosis.
The results of the study found there may be a possibility to treat MS with antiretrovirals, but the numbers were too small to reach statistical significance.
The researchers looked at over 21,000 HIV patients, along with 5.3 million people with minor conditions as controls, monitored for MS occurrences over a seven-year span. Those with HIV were found to be 62 percent less likely to develop MS. The longer a person had HIV, the less likely they were to develop MS.
The authors wrote, “If subsequent studies demonstrate there is a causal protective effect of HIV and/or its treatment, and if the magnitude of it proves to be similar…this would be the largest protective effect of any factor yet observed in relation to the development of MS.”
Additional research is required to show the effectiveness of antiretroviral drugs for multiple sclerosis.
Source: Bel Marra Health, 03 June 2016, Emily Lunardo