Dietary flavonoids improve urinary arsenic elimination among Mexican women

Grant Quiller, Ángel Mérida-Ortega, Stephen J. Rothenberg, Mariano E. Cebrián, A. Jay Gandolfi, Francisco Franco-Marina, Lizbeth López-Carrillo

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Inorganic arsenic (iAs) exposure increases risk of several diseases, including cancer. Some nutrients such as flavonoids enhance glutathione activity, which in turn play a key role in iAs elimination. Our objective was to explore whether dietary non-soy flavonoids are associated with iAs metabolism. We hypothesized that the intake of flavonoids belonging to the following groups, flavan-3-ols, flavone, flavonol, flavanone, and anthocyanidin, is positively associated with urinary dimethylarsinic acid (DMA), which is the most soluble iAs metabolite excreted. We performed a cross-sectional study that included 1027 women living in an arsenic-contaminated area of northern Mexico. Flavonoid intake was estimated using a validated food frequency questionnaire. Concentration of urinary iAs and its metabolites (monomethylarsonic acid and DMA) were determined by high performance liquid chromatography ICP-MS. Results showed positive significant associations between DMA and the flavonoid groups flava-3-ols (β= 0.0112) and flavones (β= 0.0144), as well as the individual intake of apigenin (β= 0.0115), luteolin (β= 0.0138), and eriodictyol (β= 0.0026). Our findings suggest that certain non-soy flavonoids may improve iAs elimination; however, there is still very limited information available regarding the consumption of flavonoids and iAs metabolism.

Original languageEnglish (US)
Pages (from-to)65-71
Number of pages7
JournalNutrition Research
Volume55
DOIs
StatePublished - Jul 2018

Keywords

  • Arsenic metabolism
  • Cross-sectional study
  • Flavonoids
  • Mexico

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology
  • Nutrition and Dietetics

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