Differences in the progression of primary progressive multiple sclerosis in Brazilians of African descent versus white Brazilian patients.
Mult Scler
; 16(5): 597-603, 2010 May.
Article
en En
| MEDLINE
| ID: mdl-20167593
Recent studies have suggested faster clinical progression and greater disability in multiple sclerosis patients of African descent. This study analysed the effect of ethnicity on progression and disability. Sixty-five patients with primary progressive multiple sclerosis were selected and classified as being of African descent or white. Time from onset of the disease until reaching Expanded Disability Status Scale grades 3, 6, and 8 was assessed, as well as irreversible disability (Expanded Disability Status Scale grade maintained for >or=6 months). In the African descent group, the median time to reach Expanded Disability Status Scale 3 was 1 year shorter (1 year vs 2 years, p= 0.02), and to reach Expanded Disability Status Scale 6 was 2 years shorter (3 years vs 5 years, p= 0.01) than in the group of white patients. According to the Kaplan-Meier survival curves, patients of African descent reached every disability stage faster than white patients (p= 0.03, p = 0.04, and p = 0.03, respectively, for Expanded Disability Status Scale grades 3, 6, and 8). As in United States and European patients of African descent, the more severe and faster progression of multiple sclerosis seen in Brazilian primary progressive multiple sclerosis patients of African descent suggests a possibly greater effect of ethnicity rather than environment on the progression of multiple sclerosis.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Esclerosis Múltiple Crónica Progresiva
Límite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
País/Región como asunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Mult Scler
Asunto de la revista:
NEUROLOGIA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Reino Unido