The Expression of Zinc Transporters Changed in the Intestine of Weaned Pigs Exposed to Zinc Chitosan Chelate
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- 作者：Mengyuan Lv ; Xiongfeng Fu ; Luansha Hu ; Xiaojing Yue…
- 关键词：Zinc chitosan chelate ; Zinc transporters ; mRNA level ; Western blot ; Weaned piglets
- 刊名：Biological Trace Element Research
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：174
- 期：2
- 页码：328-334
- 全文大小：407 KB
- 刊物主题：Biochemistry, general; Biotechnology; Nutrition; Oncology;
- 出版者：Springer US
- ISSN：1559-0720
- 卷排序：174
文摘
This study was conducted to investigate the effect of zinc chitosan chelate (CS-Zn) on zinc transporter expression and content of tissue zinc in weaned piglets. A total of 90 weaned pigs (Duroc × Landrace × Yorkshire) were randomly allocated to treatment groups with supplementation of 100 mg/kg zinc as ZnSO<sub>4sub>, 100 mg/kg zinc as mixture of ZnSO<sub>4sub> and chitosan, or 100 mg/kg zinc as CS-Zn, respectively. After 30 days of trial, 18 piglets (six pigs per treatment) were killed and the samples of duodenal mucosa were taken for analysis of zinc transporter mRNA expressions and protein abundance. The results show that CS-Zn more effectively increases (p < 0.05) the average daily gain (ADG) and serum zinc concentration. Zinc concentration in the liver and kidney did not differ between treatments. The mRNA expressions of ZnT1, ZIP4, and ZIP5 in CS-Zn treatment were all upregulated (p < 0.05) than ZnSO<sub>4sub> or mixture of ZnSO<sub>4sub> and chitosan groups. ZnT1 abundance was greater (p < 0.05) with CS-Zn as compared with ZnSO<sub>4sub> and mixture of ZnSO4 and chitosan treatments, whereas ZIP4 and ZIP5 abundance was higher (p < 0.05) in ZnSO4 group. The results indicate that CS-Zn is more effective in serum zinc accumulation, and it might regulate zinc homeostasis by affecting zinc transporter mRNA expression and absorption mechanism might be different with ZnSO<sub>4.sub>