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糖蛋白是大鲵(Andrias davidianus)皮肤黏液的主要成份,具有抗氧化、抑菌等作用。以KM小鼠为研究对象,验证皮肤黏液糖蛋白的抗低氧作用,为后期探索大鲵对水中低氧环境的适应机制提供新的视角。以人参皂苷为阳性对照组,生理盐水为空白对照组,分别用600 mg/kg,800 mg/kg以及1 000 mg/kg剂量的大鲵皮肤黏液糖蛋白对小鼠进行连续7 d的腹腔注射,进行-常压密闭实验,并测定脑、肺组织含水量,以及血浆、脑组织和心肌组织中一氧化氮合酶(NOS)、谷胱甘肽过氧化物酶(GSH-Px)、超氧化物歧化酶(SOD)活性及丙二醛(MDA)含量。大鲵皮肤黏液糖蛋白能够延长缺氧小鼠生存时间4.39% ~ 15.50%,降低小鼠脑含水量4.16%~13.12%,降低小鼠肺含水量6.90%~16.72%,并且能够显著增加缺氧小鼠血浆、脑组织和心肌组织中总NOS、GSH-Px、SOD活性,降低MDA水平(P<0.01)。大鲵皮肤黏液糖蛋白可提高小鼠的抗低氧能力,这可能是大鲵适应水中低氧环境的方式之一。
Abstract:Glycoprotein is the main component of skin mucus of giant salamander, which had the functions of anti-oxidation and antibacterial. KM mice were used as research objects to verify the anti-hypoxia effect of skin mucous glycoprotein, it provides a new perspective to explore the adaptation of giant salamander to low oxygen environment in water. The mice were intraperitoneally administered with giant salamander skin mucus glycoprotein at doses of (600 mg/kg), (800 mg/kg), and (1 000 mg/kg) for 7 consecutive days, using ginsenosides as the positive control group and normal saline as the blank control group. A normobaric hypoxia experiment was conducted, followed by the measurement of cerebral edema, pulmonary edema, and the activities of nitric oxide synthase, glutathione peroxidase, superoxide dismutase, as well as the content of malondialdehyde in plasma, brain tissue, and myocardial tissue. The results showed that the skin mucous glycoprotein of giant salamander could prolong the survival time of hypoxic mice by 4.39%-15.5%, reduce the brain water content of mice by 4.16%-13.12%, and reduce the lung water content of mice by 6.90%-16.72%. The activities of total NOS, GSH-Px and SOD in plasma, brain and myocardium of hypoxic mice were significantly increased, and the level of MDA was decreased (P<0.01).The skin mucus glycoprotein of giant salamander can improve the anti-hypoxia ability of mice, which may be one of the ways for giant salamander to adapt to the low oxygen environment in water.
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基本信息:
中图分类号:Q959.9
引用信息:
[1]安玉婷,李双,李安娜,等.大鲵皮肤黏液糖蛋白对小鼠抗低氧能力的影响[J].经济动物学报().
基金信息:
国家自然科学基金资助项目(31460564); 湖南省科技厅重点领域研发计划项目(2020NK204); 湖南省自然科学基金项目(2022JJ30472)
2025-04-29
2025-04-29
2025-04-29