Fields M, Lewis C G, Lure M D, Burns W A, Antholine W E
Vitamin and Mineral and Carbohydrate Nutrition Laboratories, Beltsville Human Nutrition Research Center, US Department of Agriculture, MD 20705.
Metabolism. 1991 Jan;40(1):105-9. doi: 10.1016/0026-0495(91)90200-g.
The present study was undertaken in order to determine whether hepatic iron overload plays a role in the exacerbation of copper deficiency. Weanling male Sprague-Dawley rats were fed a copper-deficient (0.6 microgram Cu/g) diet containing 62% fructose for 5 weeks. Some of the copper-deficient rats were injected daily with deferoxamine (DFX), an iron chelator that has been widely used to reduce iron overload. DFX reduced hepatic iron concentrations, which in turn ameliorated the pathology of copper deficiency when compared with nontreated copper-deficient animals. It is suggested that hepatic iron overload in a reduced environment plays a major role in the exacerbation of copper deficiency. Once the concentration of hepatic iron is reduced, the severity of the deficiency should be improved.
本研究旨在确定肝脏铁过载是否在铜缺乏的加重中起作用。将断乳雄性Sprague-Dawley大鼠用含62%果糖的缺铜(0.6微克铜/克)饮食喂养5周。一些缺铜大鼠每天注射去铁胺(DFX),这是一种已被广泛用于减轻铁过载的铁螯合剂。与未治疗的缺铜动物相比,DFX降低了肝脏铁浓度,进而改善了铜缺乏的病理状况。提示在低铜环境下肝脏铁过载在铜缺乏的加重中起主要作用。一旦肝脏铁浓度降低,缺乏的严重程度应会改善。