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Multiple sclerosis and blood transfusion

R J Swingler1

  • 1Department of Neurology, Dundee Royal Infirmary, UK.

Neuroepidemiology
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

This study investigated if blood transfusions increase multiple sclerosis (MS) risk, as MS might be triggered by retroviral infections. The findings show no evidence linking blood transfusions to a higher risk of developing MS.

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Area of Science:

  • Neuroimmunology
  • Viral Immunology
  • Epidemiology

Background:

  • Multiple sclerosis (MS) is a demyelinating disease of the central nervous system.
  • A recent hypothesis suggests MS may be initiated by a retrovirally encoded superantigen.
  • If this hypothesis is correct, factors predisposing to retroviral infection could be MS risk factors.

Purpose of the Study:

  • To investigate the association between blood transfusion history and the risk of developing multiple sclerosis (MS).
  • To evaluate if blood transfusion, a potential risk factor for retroviral infection, is linked to MS development.

Main Methods:

  • A case-control study was conducted with 150 Scottish patients diagnosed with definite or probable MS.
  • 150 age- and sex-matched neurological controls were recruited for comparison.

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  • Participants were interviewed regarding their history of blood transfusions prior to the year of MS onset.

    • Main Results:

    • The study found that 7 (4.7%) of MS patients and 7 (4.7%) of controls had received a blood transfusion before the relevant time point.
    • The odds ratio for MS associated with blood transfusion was 1.0 (95% Confidence Interval: 0.3-3.34).

    Conclusions:

    • The results indicate no statistically significant association between a history of blood transfusion and an increased risk of multiple sclerosis.
    • The findings do not support the hypothesis that blood transfusion is a risk factor for MS development, at least in the studied population.