Association of body mass index with longitudinal rates of retinal atrophy in multiple sclerosis.
Mult Scler
; 26(7): 843-854, 2020 06.
Article
em En
| MEDLINE
| ID: mdl-32297826
ABSTRACT
BACKGROUND:
Studies evaluating associations between body mass index (BMI) and optical coherence tomography (OCT) measures in multiple sclerosis (MS) are lacking.OBJECTIVE:
To assess whether elevated BMI is associated with accelerated retinal atrophy.METHODS:
In this observational study, 513 MS patients were followed with serial spectral-domain OCT for a median of 4.4 years. Participants were categorized as normal weight (BMI 18.5-24.9 kg/m2), overweight (BMI 25-29.9 kg/m2), and obese (BMI ⩾30 kg/m2). Participants with diabetes mellitus or uncontrolled hypertension and eyes with optic neuritis (ON) ⩽6 months prior to baseline OCT or during follow-up were excluded. Statistical analyses were performed with mixed-effects linear regression.RESULTS:
Obese patients (n = 146) exhibited accelerated rates of ganglion cell + inner plexiform layer (GCIPL) atrophy relative to normal weight patients (n = 214; -0.57%/year (95% confidence interval (CI) -0.65% to -0.48%) versus -0.42%/year (95% CI -0.49% to -0.35%); p = 0.012). GCIPL atrophy rate did not differ between overweight (n = 153) and normal weight patients (-0.47%/year vs -0.42%/year; p = 0.41). Each 1 kg/m2 higher BMI was associated with accelerated GCIPL (-0.011%/year; 95% CI -0.019% to -0.004%; p = 0.003) atrophy. Multivariable analyses accounting for age, sex, race, MS subtype, and ON history did not alter the above findings.CONCLUSIONS:
Elevated BMI, in the absence of overt metabolic comorbidities, may be associated with accelerated GCIPL atrophy. Obesity, a modifiable risk factor, may be associated with accelerated neurodegeneration in MS.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Retina
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Índice de Massa Corporal
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Progressão da Doença
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Sobrepeso
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Esclerose Múltipla
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Estados Unidos