title: The distribution patterns of trace elements in the blood and organs in a rabbit experimental model of copper pollution and study of haematology and biochemistry parameters.
abstract: In a rabbit model of five copper overfeeding, we investigated the distribution pattern of trace elements of copper [Cu], zinc [Zn], chromium [Cr], manganese [Mn], and selenium [Se] in blood serum, red cell, and whole blood and in the organs: brain, gallbladder, liver, intestines, heart, kidney, lung, and spleen. Furthermore, their haematology and biochemistry parameters as well as feed consumption and weight development were also performed in this study. Changes in trace element concentrations were determined by contrast and control group. Observably, the increased concentrations of Cr were observed in the heart; that of Cu, Zn, Cr, Mn in the liver; that of Cu, Cr, Mn in the intestines; that of Cu in the spleen; that of Cu in the blood serum; and that of Cu in the whole blood. But remarkably, the decreased concentrations of Mn were observed in heart; that of Zn and Se in the encephalon; that of Cr, Mn and Se in the spleen and that of Zn in the blood serum. In the gallbladder, the concentrations of Zn, Cr, Mn, and Se were also reduced. Excessive Cu was accumulated mainly in liver, intestines, and blood serum. In contrast group, only a few changes were detected in excretion of Mn, Zn, and Cr, but increased concentrations of Cu and Se compared with the control group. For the different biochemistry parameters measured, the contrast group showed changes, mainly owing to the altered activity of enzymes induced by trace element excess and imbalance. Increased concentrations of LDL were measured in contrast group, while a substantial decrease was seen in TG and VLDL as a result of excessive Cu. Regarding haematological parameters, increased concentrations of NEUT% and EO% were found in contrast group, but considerably decreased concentrations were detected in PLT, MONO%, BASO%, MONO#, BASO#, and P-LCR, but a minor decrease was also seen in EO#. The present paper shows the effect of copper pollution in the animals and analyzes the interplay among trace elements in their bodies at length. It is significant for environment protection and toxicology study.
authors.affiliation: Key Laboratory of Analytical Science of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, 071002 Hebei, PR China.
authors.forename: Shi-Gang
authors.initials: SG
authors.lastname: Shen
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Yan-Yan
authors.initials: YY
authors.lastname: Zhao
authors.forename: Qiu-Yan
authors.initials: QY
authors.lastname: Zhang
authors.forename: Han-Wen
authors.initials: HW
authors.lastname: Sun