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Mult Scler Relat Disord ; 56: 103274, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34583214

RESUMO

BACKGROUND: multiple sclerosis (MS) is a complex disease sustained by several pathogenic mechanisms. As such, combination therapy strategies, targeting a range of disease mechanisms, might represent the ideal therapeutic approach. Here we investigated the efficacy of curcumin, a naturally occurring poly-phenolic phytochemical with potent anti-inflammatory and antioxidant properties, in subjects under treatment with IFN ß-1a, to test the effects of this combination therapy on clinical and MRI parameters of inflammation and neurodegeneration in relapsing MS (RMS). METHODS: eighty active RMS were prospectively enrolled, randomized (1:1) to either the IFN-curcumin or the IFN-placebo group and followed up longitudinally with clinical and MRI assessments for 24 months. Primary endpoint was the efficacy of curcumin versus placebo as add-on therapy on new/enlarging T2 lesions in RMS subjects under treatment with subcutaneous IFN ß-1a 44 mcg TIW. Efficacy on clinical parameters (relapses and disability progression), other MRI parameters of inflammation (T1 Gd-enhancing lesions, combined unique active-CUA lesions) and neurodegeneration (T1-hypointense lesions, grey matter loss and white matter microstructural damage) as well as safety and tolerability of curcumin were explored as secondary endpoints. RESULTS: ten subjects dropped out from the study by month 12 (6 in the IFN-curcumin group and 4 in the IFN-placebo group), and 27 by month 24 (11 in the IFN-curcumin group and 16 in the IFN-placebo group). Although no between-group difference was present in terms of proportion of subjects free from new/enlarging T2 lesions, a lower proportion of patients with CUA lesions was noted at month 12 in the IFN-curcumin group in comparison with the IFN-placebo group (7.5% vs 17.5%, χ² test p= 0.0167). This result was not confirmed at month 24. The statistical analysis failed to reveal any difference between the two treatment groups - IFN-curcumin and IFN-placebo - in terms of relapses, disability progression, other MRI metrics of inflammation and MRI changes suggestive of ongoing neurodegeneration. No difference in the rate and nature of adverse events was observed between the two treatment groups. CONCLUSION: Although the study drop-out rate was too high to allow definite conclusions, our findings suggest that curcumin might add to IFN ß-1a efficacy on radiological signs of inflammation in MS, while it did not seem to exert any neuroprotective effect as assessed by clinical and MRI parameters. (NCT01514370).


Assuntos
Curcumina , Esclerose Múltipla Recidivante-Remitente , Esclerose Múltipla , Adjuvantes Imunológicos , Curcumina/efeitos adversos , Suplementos Nutricionais , Humanos , Interferon beta-1a/efeitos adversos , Imageamento por Ressonância Magnética , Esclerose Múltipla Recidivante-Remitente/diagnóstico por imagem , Esclerose Múltipla Recidivante-Remitente/tratamento farmacológico , Estudos Prospectivos , Recidiva , Resultado do Tratamento
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