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The alleviative effects of taurine supplementation on growth, antioxidant enzyme activities, hepatopancreas morphology and mRNA expression of heat shock proteins in freshwater prawn Macrobrachium nipponense (De Haan) exposed to dietary lead stress
Aquaculture Nutrition ( IF 3.5 ) Pub Date : 2021-09-20 , DOI: 10.1111/anu.13354
Zhili Ding 1 , Youqin Kong 1 , Changle Qi 1 , Yan Liu 1 , Yixiang Zhang 1 , Jinyun Ye 1
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To investigate the potential alleviative effect of taurine supplementation on growth and oxidant stress in freshwater prawn Macrobrachium nipponense (De Haan) exposed to dietary lead, pelleted feeds were prepared with two concentrations of lead (0 and 10 mg/kg diet) and two levels of taurine (0 and 15 g/kg diet). Healthy prawns were randomly distributed between the four treatment groups, with three tanks per group and 50 prawns per tank. Dietary lead decreased weight gain and the activities of superoxide dismutase, catalase and glutathione peroxidase; increased malondialdehyde content; altered hepatopancreas morphology; and decreased the expression of heat shock protein 90 (HSP90; p < .05). A significant interactive effect was found between dietary lead and taurine on the malondialdehyde level, and taurine supplementation significantly decreased the malondialdehyde level under lead stress (p < .05). No significant effect on growth, hepatopancreas morphology and HSP90 expression was observed with taurine supplementation under lead stress. Overall, dietary lead affected growth, induced oxidative stress and impaired hepatopancreas morphology of the prawns, and dietary taurine significantly alleviated oxidative stress through a decreased malondialdehyde level, whereas the capacity of taurine to alleviate the decreased growth rate, hepatopancreas damage and low HSP90 expression under lead stress was limited.

中文翻译:

牛磺酸补充剂对日粮铅胁迫下淡水虾日本沼虾(De Haan)生长、抗氧化酶活性、肝胰腺形态和热休克蛋白 mRNA 表达的缓解作用

为了研究牛磺酸补充剂对暴露于日粮铅的淡水虾日本沼虾(De Haan) 生长和氧化应激的潜在缓解作用,用两种浓度的铅(0 和 10 mg/kg 日粮)和两种水平的铅制备颗粒饲料。牛磺酸(0 和 15 g/kg 饮食)。健康对虾随机分布在四个处理组之间,每组三缸,每缸50只对虾。膳食铅降低体重增加和超氧化物歧化酶、过氧化氢酶和谷胱甘肽过氧化物酶的活性;丙二醛含量增加;肝胰腺形态改变;并降低热休克蛋白 90 (HSP90; p < .05)。发现膳食铅和牛磺酸对丙二醛水平有显着的交互作用,而牛磺酸的补充显着降低了铅胁迫下的丙二醛水平(p  < .05)。在铅胁迫下补充牛磺酸对生长、肝胰腺形态和 HSP90 表达没有显着影响。总体而言,日粮铅影响对虾的生长、诱导氧化应激和肝胰腺形态受损,而日粮牛磺酸通过降低丙二醛水平显着缓解氧化应激,而牛磺酸缓解生长速度下降、肝胰腺损伤和 HSP90 低表达的能力铅应力有限。
更新日期:2021-09-20
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