Association of Modifiable Lifestyle Factors with Plasma Branched-Chain Amino Acid Metabolites in Women.
J Nutr
; 152(6): 1515-1524, 2022 06 09.
Article
en En
| MEDLINE
| ID: mdl-35259270
ABSTRACT
BACKGROUND:
Circulating branched-chain amino acids (BCAAs-isoleucine, leucine, and valine) are strongly associated with higher risk of incident type 2 diabetes (T2D); however, determinants of elevated fasting BCAA concentrations are largely unknown.OBJECTIVES:
We aimed to characterize the modifiable lifestyle factors related to plasma BCAAs.METHODS:
We performed a cross-sectional analysis among n = 18,897 women (mean ± SD age 54.9 ± 7.2 y) in the Women's Health Study, free of T2D and cardiovascular disease at baseline blood draw. Lifestyle factors, weight, and height were self-reported via questionnaire, including smoking status, alcohol, leisure-time physical activity (LTPA), diet quality scores [2010 Alternative Healthy Eating Index (without alcohol) (aHEI); alternate Mediterranean Diet (aMED)], and dietary sources of BCAAs. Plasma BCAAs were quantified via NMR spectroscopy. We calculated multivariable-adjusted percentage mean differences (95% CIs) and P values for linear trend of BCAAs stratified by categoric lifestyle factors. We estimated R2 from univariate cubic spline regression models to estimate the variability in BCAAs explained.RESULTS:
Compared with women with BMI (in kg/m2) <25.0, BCAAs were 8.6% (95% CI 8.0%, 9.3%), 15.3% (95% CI 14.4%, 16.3%), and 21.0% (95% CI 18.2%, 23.9%) higher for the BMI strata 25.0-29.9, 30.0-39.9, and ≥40.0, respectively (P-trend < 0.0001). Women with higher LTPA and higher alcohol intake compared with lower had modestly (â¼1%) lower plasma BCAAs (P-trend = 0.014 and 0.0003, respectively). Differences in smoking status, aHEI, and aMED score were not related to plasma BCAAs. Women with higher dietary BCAAs had dose-response higher plasma BCAA concentrations, 3.4% (95% CI 2.5%, 4.4%) higher when comparing the highest with the lowest quintile (P-trend < 0.0001). BMI explained 11.6% of the variability of BCAAs, whereas other factors explained between 0.1% and 1%.CONCLUSIONS:
Our findings among a large cohort of US women indicate that BMI, but less so diet, physical activity, and other lifestyle factors, is related to plasma BCAAs.This trial was registered at clinicaltrials.gov as NCT00000479.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Dieta Mediterránea
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Diabetes Mellitus Tipo 2
Tipo de estudio:
Etiology_studies
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Observational_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Female
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Humans
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Middle aged
Idioma:
En
Año:
2022
Tipo del documento:
Article