Effect of Maternal Marginal Zinc Deficiency on Development, Redox Status, and Gene Expression Related to Oxidation and Apoptosis in an Avian Embryo Model
文献类型： 外文期刊
作者： Gao, Wei 1 ; Huang, Liang 1 ; Zhang, Xiufen 1 ; Ma, Xinyan 2 ; Wang, Wence 1 ; Zheng, Yaohui 1 ; Geng, Wei 3 ; Liu, Chuang 3 ; Wei, Shi 3 ; Yang, Lin 1 ; Zhu, Yongwen 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Anim Nutr & Regulat, Guangzhou 510000, Peoples R China
2.Guangdong Acad Agr Sci, Inst Anim Sci,Guangdong Key Lab Anim Breeding & N, Key Lab Anim Nutr & Feed Sci South China,Minist A, State Key Lab Livestock & Poultry Breeding,Guangd, Guangzhou 510640, Peoples R China
3.WENS Grp, Waterfowl Div, Yunfu 527300, Peoples R China
期刊名称：OXIDATIVE MEDICINE AND CELLULAR LONGEVITY （ 影响因子：7.31； 五年影响因子：8.427 ）
ISSN： 1942-0900
年卷期： 2021 年 2021 卷
页码：
收录情况： SCI
摘要： Maternal severe zinc (Zn) deficiency resulted in growth retardation and high mortality during embryonic development in human. Therefore, this study is aimed at evaluating the effect of maternal marginal Zn deficiency on the development and redox status to avoid severe Zn deficiency using an avian model. A total of 324 laying duck breeders at 214 days old were randomly allotted into 3 dietary Zn levels with 6 replicates of 18 ducks per replicate. The birds were fed experimental diets including 3 dietary supplemental Zn levels of 0 mg/kg (maternal Zn-deficient group, 29.2 mg Zn/kg diet), 60 mg/kg (maternal Zn-adequate group), and 120 mg/kg (maternal Zn-high group) for 6 weeks. Dietary Zn levels had on effect on egg production and fertility (P > 0.05), whereas dietary Zn deficiency decreased breeder plasma Zn concentration and erythrocytic alkaline phosphatase activity at week 6 and inhibited erythrocytic 5'-nucleotidase (5'-NT) activity at weeks 2, 4, and 6 (P < 0.05), indicating that marginal Zn-deficient status occurred after Zn depletion. Maternal marginal Zn deficiency increased embryonic mortality and contents of superoxide anion radical, MDA, and PPC and reduced MT content and CuZnSOD activity in duck embryonic livers on E29. The MDA content was positively correlated with embryonic mortality. Maternal marginal Zn deficiency increased BCL2-associated X protein and Caspase-9 mRNA expressions as well as decreased B-cell lymphoma-2 and MT1 mRNA and signal AKT1 and ERKI protein expressions (P < 0.05). Breeder plasma Zn concentration and erythrocytic 5'-NT activities at week 6 were positively correlated with GSH-Px activity and GPx, MT1, and BCL2 mRNA expressions in embryonic livers on E29. In conclusion, erythrocytic 5'-NT activity could be more rapid and reliable to monitor marginal Zn-deficient status. Marginal Zn deficiency impaired hatchability and antioxidant defense system and then induced oxidative damage and apoptosis in the embryonic liver, contributing to the greater loss of duck embryonic death.
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