RESUMEN

This study investigated the effect of tucum-do-cerrado consumption in the oxidative status of iron-supplemented rats. Four groups of rats were treated: Control (AIN-93G), Tuc (AIN-93G added of tucum-do-cerrado), Fe (AIN-93G iron-enriched), or TucFe (AIN-93G with tucum-do-cerrado and iron-enriched) diet, for 30 days. Iron-enriched diet increased serum, liver, spleen, and intestine iron levels; transferrin saturation; liver lipid oxidation; mRNA levels of hepatic Hamp and Bmp6, and Nrf2 in the intestine. Tucum-do-cerrado consumption reduced spleen lipid and protein oxidation; mRNA levels of hepatic Hamp and Ftl, and increased serum antioxidant capacity and hepatic mRNA levels of Bmp6, Hmox1, Nqo1, and Nrf2. TucFe diet consumption abrogated the liver Hamp iron-induced up-regulation, prevented intestinal iron accumulation; hepatic lipid peroxidation; splenic protein damage, and the increase of catalase, glutathione reductase, and glutathione peroxidase activity in some tissues. These results suggest that tucum-do-cerrado protects tissues against oxidative damage, by reducing iron availability in liver and consequently inhibiting liver Hamp expression.

Asunto(s)

Antioxidantes/farmacología , Arecaceae , Dieta , Hierro/metabolismo , Hígado/efectos de los fármacos , Estrés Oxidativo/efectos de los fármacos , Extractos Vegetales/farmacología , Animales , Antioxidantes/metabolismo , Catalasa/metabolismo , Alimentos Fortificados , Glutatión/metabolismo , Hepcidinas/genética , Hepcidinas/metabolismo , Homeostasis , Mucosa Intestinal/metabolismo , Intestinos/efectos de los fármacos , Hierro/sangre , Peroxidación de Lípido/efectos de los fármacos , Hígado/metabolismo , Masculino , Carbonilación Proteica/efectos de los fármacos , ARN Mensajero/metabolismo , Ratas Wistar , Bazo/efectos de los fármacos , Bazo/metabolismo , Regulación hacia Arriba