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The authors report an intense downregulation of transforming growth factor-beta1 (TGF-beta1) serum levels 4 weeks from start of interferon-beta1a (IFN-beta1a) treatment at 44 microg/week in 271 patients with relapsing-remitting MS, which was still present after 1 year (p < 0.001). In line with previous data, interleukin-10 serum levels did not vary significantly. These results indicate that the immunomodulatory effects of IFN-beta might not be restricted to the postulated anti-inflammatory mechanisms and address the role of TGF-beta in the pathogenesis of MS.
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Lünemann et al. (2001) studied this question.
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