Diet affects glycosylation of serum proteins in women at risk for cardiometabolic disease.
Eur J Nutr
; 60(7): 3727-3741, 2021 Oct.
Article
em En
| MEDLINE
| ID: mdl-33770218
ABSTRACT
BACKGROUND:
Glycoproteomics deals with glycoproteins that are formed by post-translational modification when sugars (like fucose and sialic acid) are attached to protein. Glycosylation of proteins influences function, but whether glycosylation is altered by diet is unknown.OBJECTIVE:
To evaluate the effect of consuming a diet based on the Dietary Guidelines for Americans on circulating glycoproteins that have previously been associated with cardiometabolic diseases.DESIGN:
Forty-four women, with one or more metabolic syndrome characteristics, completed an 8-week randomized controlled feeding intervention (n = 22) consuming a diet based on the Dietary Guidelines for Americans (DGA 2010); the remaining consumed a 'typical American diet' (TAD, n = 22). Fasting serum samples were obtained at week0 (baseline) and week8 (post-intervention); 17 serum proteins were chosen for targeted analyses. Protein standards and serum samples were analyzed in a UHPLC-MS protocol to determine peptide concentration and their glycan (fucosylation or sialylation) profiles. Data at baseline were used in correlational analyses; change in proteins and glycans following intervention were used in non-parametric analyses.RESULTS:
At baseline, women with more metabolic syndrome characteristics had more fucosylation (total di-fucosylated proteins p = 0.045) compared to women with a lesser number of metabolic syndrome characteristics. Dietary refined grain intake was associated with increased total fucosylation (ρ = - 0.530, p < 0.001) and reduced total sialylation (ρ = 0.311, p = 0.042). After the 8-week intervention, there was higher sialylation following the DGA diet (Total di-sialylated protein p = 0.018, poly-sialylated orosomucoid p = 0.012) compared to the TAD diet.CONCLUSIONS:
Based on this study, glycosylation of proteins is likely affected by dietary patterns; higher sialylation was associated with a healthier diet pattern. Altered glycosylation is associated with several diseases, particularly cancer and type 2 diabetes, and this study raises the possibility that diet may influence disease state by altering glycosylation. CLINICAL TRIAL REGISTRATION NCT02298725 at clinicaltrials.gov; https//clinicaltrials.gov/ct2/show/NCT02298725 .Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças Cardiovasculares
/
Diabetes Mellitus Tipo 2
Tipo de estudo:
Clinical_trials
/
Etiology_studies
/
Guideline
/
Risk_factors_studies
Limite:
Female
/
Humans
Idioma:
En
Revista:
Eur J Nutr
Assunto da revista:
CIENCIAS DA NUTRICAO
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Estados Unidos