The Dietary Inflammatory Index® and Alternative Healthy Eating Index 2010 in relation to leucocyte telomere length in postmenopausal women: a cross-sectional study.
J Nutr Sci
; 8: e35, 2019.
Article
in En
| MEDLINE
| ID: mdl-31723429
ABSTRACT
Telomeres are nucleoprotein complexes that form the ends of eukaryotic chromosomes where they protect DNA from genomic instability, prevent end-to-end fusion and limit cellular replicative capabilities. Increased telomere attrition rates, and relatively shorter telomere length, is associated with genomic instability and has been linked with several chronic diseases, malignancies and reduced longevity. Telomeric DNA is highly susceptible to oxidative damage and dietary habits may make an impact on telomere attrition rates through the mediation of oxidative stress and chronic inflammation. The aim of this study was to examine the association between leucocyte telomere length (LTL) with both the Dietary Inflammatory Index® 2014 (DII®) and the Alternative Healthy Eating Index 2010 (AHEI-2010). This is a cross-sectional analysis using baseline data from 263 postmenopausal women from the Alberta Physical Activity and Breast Cancer Prevention (ALPHA) Trial, in Calgary and Edmonton, Alberta, Canada. No statistically significant association was detected between LTL z-score and the AHEI-2010 (P = 0·20) or DII® (P = 0·91) in multivariable adjusted models. An exploratory analysis of AHEI-2010 and DII® parameters and LTL revealed anthocyanidin intake was associated with LTL (P < 0·01); however, this association was non-significant after a Bonferroni correction was applied (P = 0·27). No effect modification by age, smoking history, or recreational physical activity was detected for either relationship. Increased dietary antioxidant and decreased oxidant intake were not associated with LTL in this analysis.
Key words
AHEI-2010, Alternative Healthy Eating Index 2010; ALPHA, Alberta Physical Activity and Breast Cancer Prevention; Alternative Healthy Eating Index; C-DHQ-I, Canadian Dietary History Questionnaire-I; Chronic inflammation; DII®, Dietary Inflammatory Index®; DXA, dual-energy X-ray absorptiometry; Dietary Inflammatory Index®; LTL, leucocyte telomere length; Oxidative stress; Telomeres
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Telomere
/
Postmenopause
/
Diet
/
Diet, Healthy
/
Leukocytes
Type of study:
Etiology_studies
/
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Aged
/
Female
/
Humans
/
Middle aged
Country/Region as subject:
America do norte
Language:
En
Journal:
J Nutr Sci
Year:
2019
Document type:
Article
Affiliation country:
Canada