Title:Protective Effect of Aronia Melanocarpa Polyphenols on Cadmium Accumulation in the Body: A Study in a Rat Model of Human Exposure to this Metal
Volume: 16
Issue: 13
Author(s): Malgorzata M. Brzoska, Malgorzata Galazyn-Sidorczuk, Maria Jurczuk and Michal Tomczyk
Affiliation:
关键词:
积累，明显吸收，黑果腺肋花楸，镉，镉负荷，多酚，保护，大鼠。
摘要: Recently a growing attention has been paid to the possibility of using biologically active
compounds, including polyphenols, for the prevention of unfavourable effects of exposure to xenobiotics.
The study was aimed to investigate, in a female rat model, whether consumption of Aronia melanocarpa
polyphenols (AMP) under chronic exposure to cadmium (Cd) decreases the gastrointestinal
absorption and body burden of this heavy metal. For this purpose, Cd turnover (apparent absorption, retention
in the body, concentration in the blood, soft tissues and bone tissue, total pool in internal organs,
faecal and urinary excretion) was evaluated in the female Wistar rats who were administered only a 0.1% aqueous
extract of AMP (prepared from the powdered extract containing 65.74% of polyphenols) as drinking fluid or/and Cd in
diet (1 and 5 mg/kg) for up to 24 months. AMP administration under the low Cd treatment (1 mg/kg diet) had only a very
slight protective impact against this metal accumulation in the organism, whereas polyphenols application under moderate
exposure (5 mg Cd/kg diet) significantly decreased apparent absorption and retention in the body, and increased urinary
concentration of this xenobiotic, resulting in its lower concentration in the blood and lower accumulation in soft tissues
(mainly in the liver and kidneys) and bone tissue. Based on the study, it can be concluded that consumption of polyphenol-
rich products may prevent Cd absorption from the diet polluted by this metal and its accumulation in the females’
body, and thus also prevent its toxic action.
23