ArchivIA - Archivio istituzionale dell'Universita' di Catania >
Tesi di dottorato >
Area 06 - Scienze mediche >
Please use this identifier to cite or link to this item:
|Issue Date: ||29-Jan-2014|
|Authors: ||Quattrocchi, Annalisa|
|Title: ||Diet, genetic and epigenetic signatures in women of childbearing age from a Mediterranean population: perspectives for public health|
|Abstract: ||The aim of the study was to determine the association between Mediterranean diet (MD), folate intake and global DNA methylation in women of childbearing age.
A total of 177 women were enrolled in a cross-sectional study. Folate intake and MD were assessed by a validated food frequency questionnaire. LINE-1 methylation level in leukocytes was measured by pyrosequencing.
Women reported poor adherence to MD (mean value 4.1) and high prevalence of folate deficiency (83.1%). Mean level of LINE-1 methylation was 65.3%. A strong association between folate deficiency and global hypomethylation, was found: women with folate deficiency had a 4 fold increased risk to be hypometylated compared with women with no folate deficiency (OR = 4; 95% CI: 1.3 11.8). In multivariate analysis, the association decreased with a borderline confidence interval (p=0.053, OR = 3; 95% CI: 1 3.3).
Poor adherence to MD was not directly associated with global methylation level, however, women whose consumption of fruit was below the median (201 gr/day) had a 2.8 fold increased risk to be hypometylated in comparison with those women whose consumption was above the median value (OR = 2.8; 95% CI: 1.3 5.8; p=0.019). In multivariate logistic regression analysis, results, adjusted for age, nutritional status, smoking habits and dietary caloric intake, showed a significant relationship between low fruits intake and low methylation level (p = 0.006; OR = 3.8; 95% CI: 1.5 9.7).
The inverse association between high consumption of fruit, which represents a mainsource of folate, and DNA hypomethylation, suggests that dietary pattern characterized by a high intake of fruits and, in a broader view, great adherence to MD may protect against DNA hypomethylation.|
|Appears in Collections:||Area 06 - Scienze mediche|
Files in This Item:
|QTTNLS85M69E017K-TESI dottorato Annalisa Quattrocchi.pdf||Annalisa Quattrocchi PhD thesis ||3,01 MB||Adobe PDF||View/Open
Items in ArchivIA are protected by copyright, with all rights reserved, unless otherwise indicated.