乳清蛋白补充剂对低甲状腺症中氧化应激的缓解作用
Ann Liya Sajan1, Jenat Pazheparambil Jerom1, Bhagyasree Rajasekharan Nair1
1School of Biosciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India. harinair@mgu.ac.in.
Food & function
|October 24, 2024
概括
乳清蛋白补充剂通过增强抗氧化酶活性和降低有害的MDA水平,有效地对抗甲状腺功能低下的氧化应激. 这种营养补充剂在治疗甲状腺功能障碍方面表现有前途,没有长期毒性问题.
科学领域:
- 生物化学 生化学
- 内分泌学 在内分泌学.
- 营养科学 营养科学
背景情况:
- 甲状腺功能下降是一种常见的内分泌疾病,其特点是甲状腺功能受损和代谢过程受损.
- 氧化应激,由于反应性氧物种和抗氧化防御之间的不平衡,是甲状腺功能低下症的关键病理特征.
- 乳清蛋白是含硫氨基酸和生物活性的丰富来源,因其潜在的健康益处而得到认可.
研究的目的:
- 研究乳清蛋白补充剂在减轻与实验诱导的甲状腺功能低下症相关的氧化应激的有效性.
- 评估乳清蛋白对抗氧化酶活性,脂质过氧化标记物和甲状腺功能低下模型中的ATPase水平的影响.
- 评估乳清蛋白作为治疗甲状腺功能低下症的营养补充剂的长期安全性和治疗潜力.
主要方法:
- 甲状腺功能低下症被诱导在Wistar白色老鼠使用propylthiouracil (PTU).
- 鼠被给予不同剂量的乳清蛋白 (100,300,500毫克/公斤) 或L-thyroxine,分别为30天和90天.
- 试验包括抗氧化酶活动 (SOD,酶,GPx,GST),脂质过氧化 (MDA),总抗氧化剂,谷氨酸水平,以及Ca2+和Na+/K+ ATPase活动.
- 进行了甲状腺和肝脏组织的组织病理学检查.
主要成果:
- 乳清蛋白补充剂显著增加了抗氧化活性和主要抗氧化酶的水平,以剂量依赖的方式.
- 与甲状腺功能低下控制组相比,在用乳清蛋白治疗的组中,MDA水平,一种脂质过氧化标志物显著降低.
- 恢复了ATPase活动,他的病理学分析揭示了乳清蛋白对甲状腺和肝脏组织的保护作用.
- 在90天的研究中,500毫克/千克的乳清蛋白剂量显示出显著的治疗效果,没有可观察到的毒理问题.
结论:
- 乳清蛋白,特别是在500毫克/公斤的剂量,有效地改善氧化应激在甲状腺功能低下症.
- 补充乳清蛋白可以增强抗氧化剂防御机制,改善细胞能量代谢.
- 乳清蛋白代表了一种安全而有前途的营养策略,用于管理与甲状腺功能低下相关的氧化应激.
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