食品科学

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有机硒、无机硒、VE单独使用及有机硒与VE联用对大鼠体内抗氧化能力的影响

姚 昭,李红艳,张云龙,邓泽元*   

  1. 南昌大学 食品科学与技术国家重点实验室,江西 南昌 330047
  • 出版日期:2013-08-15 发布日期:2013-09-03
  • 通讯作者: 邓泽元
  • 基金资助:

    中国博士后科学基金项目(2013M530306);江西省博士后科研项目(2013KY04);江西省科技厅国际合作项目(20122BDH80003)

Effects of Se-SMC, Sodium Selenite and VE and Combination of Se-SMC and VE on Antioxidant Defense System in Rats

YAO Zhao,LI Hong-yan,ZHANG Yun-long,DENG Ze-yuan*   

  1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
  • Online:2013-08-15 Published:2013-09-03
  • Contact: DENG Ze-yuan

摘要:

目的:分别比较有机硒(L-SeMC)和无机硒(亚硒酸钠)对大鼠抗氧化功能的影响,并在此基础上,探究有机硒与VE联用前后在大鼠体内的抗氧化作用。方法:将健康成年大鼠随机分为5组,即空白对照组、无机硒组、有机硒组、VE组、有机硒与VE联用组。大鼠以灌胃的方式连续给药30d,在第10、20、30天尾静脉采血监测血清丙二醛(MDA)、总抗氧化能力(T-AOC)、超氧化物歧化酶(SOD)的变化。第30天禁食过夜后,断头处死大鼠,测定心脏、肝脏、肾脏组织中MDA、T-AOC、SOD、谷胱甘肽过氧化物酶(GSH-Px)、还原型谷胱甘肽(GSH)和蛋白羰基水平。结果:有机硒提高组织中GSH-Px活性的作用效果比无机硒更为显著;有机硒与VE联用后,在第20天和第30天能显著升高大鼠血清中的T-AOC水平,第30天时显著升高SOD水平,并且联用后心脏、肝脏、肾脏T-AOC、SOD、GSH-Px、GSH水平显著升高。结论:有机硒提高GSH-Px活力的效果优于无机硒;有机硒与VE联用后,能显著增强大鼠体内的抗氧化能力。

关键词: 有机硒, 无机硒, VE, 联用, 大鼠, 抗氧化

Abstract:

Objective: To compare the effects of organic selenium such as L-Se-methylselenocysteine (Se-SMC) and inorganic
selenium (sodium selenite) on antioxidant functions in rats, and explore the synergistic effect of Se-SMC and vitamin E (VE)
on antioxidant functions in vivo. Methods: Adult female rats were randomly divided into five groups including blank group,
organic selenium group, inorganic selenium group, VE group, and organic selenium/VE combination group. The rats were
administrated with designed drugs by gavage for 30 d. The serum levels of malonaldehyde (MDA) content, total antioxidant
activity (T-AOC) and superoxide dismutase (SOD) activity in the rats were determined at 10, 20 d and 30 d, respectively. After
30 d, the rats were sacrificed, and MDA, glutathione (GSH) and protein carbonyl (CP) contents, and T-AOC level, as well as
SOD and glutathion peroxidase (GSH-Px) activities were determined in the heart, liver and kidney of the rats. Results: Se-
SMC resulted in higher GSH-Px activity than inorganic selenium in rat tissues. The combination of organic selenium and VE
significantly enhanced T-AOC and SOD activities in the serum of rats after administration for 20 d and 30 d and elevated T-AOC
and SOD activities as well as GSH-Px and GSH contents in the heart, liver and kidney of rats. Conclusion: Organic selenium is
better than inorganic selenium for enhancing GSH-Px activity in heart, liver and kidney tissues. In addition, the combination of
organic selenium and VE can enhance antioxidant functions in rats.

Key words: organic selenium, inorganic selenium, VE, combination, rats, antioxidant activity

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