纳米颗粒改善了尼罗河西鱼中阿弗拉托克辛的不良影响,特别提到Streptococcus agalactiae感染
Ahmed H Sherif1, Mohsen A Zommara2
1Fish Diseases Department, Animal Health Research Institute, Agriculture Research Center (ARC), Kafrelsheikh, 12619, Egypt. ahsherif77@yahoo.com.
Biological trace element research
|December 26, 2023
概括
纳米颗粒 (SeNPs) 减轻了尼罗河的氧化应激和免疫抑制,这是由阿弗拉托克素B1 (AFB1) 暴露引起的. 饮食中的SeNPs恢复了正常的酶水平,抗氧化基因表达,并在养AFB1污染料的鱼中增强了免疫功能.
科学领域:
- 水生物质毒理学研究
- 鱼类免疫学 鱼类免疫学
- 在动物料中纳米技术
背景情况:
- 非洲毒素B1 (AFB1) 是一种致氧毒素,在鱼类中引起氧化应激和免疫抑制.
- (Se) 和其纳米粒子 (SeNPs) 以其抗氧化和免疫调节特性而闻名.
研究的目的:
- 评估饮食中SeNPs对AFB1诱导的氧化应激和尼罗河鱼免疫抑制的保护作用.
- 研究SeNPs对生物化学参数,抗氧化酶基因表达和AFB1暴露的鱼的先天免疫力的影响.
主要方法:
- 尼罗河鱼被用AFB1 (500微克/公斤) 污染的饮食养,并补充了SeNPs (1毫克/公斤) 8周.
- 分析了血清酶水平 (AST,ALT,ALP),抗氧化基因表达 (SOD,CAT),DNA碎片化和免疫参数 (SAA,OBA,PA,PI,细胞因子基因表达).
- 评估了鱼类对Streptococcus agalactiae感染的易感性.
主要成果:
- AFB1暴露增加了血清酶水平,抗氧化基因表达和DNA碎片化,同时降低了免疫参数并增加了对感染的易感性.
- 食SeNPs补充剂抵消了AFB1诱导的改变,恢复了正常的酶水平和抗氧化剂状态.
- SeNPs显著改善了免疫功能,并提供了高相对保护水平,防止S. agalactiae感染.
结论:
- 饮食中的SeNPs有效地减轻AFB1诱导的氧化应激和尼罗河的免疫抑制.
- SeNP增强了抗氧化剂防御机制,并增强了暴露于真菌毒素的鱼类的免疫系统.
- 海洋养殖系统是改善水产养殖中的鱼类健康和抗病能力的有希望的战略.
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