摘要
T-2毒素经20 d蓄积毒性试验法染毒对虾,采用LC-MS/MS检测对虾组织中游离态T-2毒素,并将染毒的虾头和肌肉匀浆液连续灌胃小鼠7 d,检测小鼠血常规和血清指标,分析对虾虾头和肌肉中隐蔽态T-2毒素残留对小鼠的毒性效应。结果显示,经20 d蓄积毒性试验,对虾体内没有游离态T-2存在,而且低剂量染毒对虾对小鼠没有影响,但高剂量组(12.2 mg·kg^(-1))可引起小鼠中间粒细胞增加,红细胞系统和血小板各项指标均显著下降(P<0.05),血清生化指标差异显著(P<0.05),且虾头对小鼠的损伤作用高于肌肉。研究表明,蓄积染毒对虾体内存在隐蔽态T-2毒素,对小鼠具有一定的免疫毒性和血液毒性,导致炎症发生、贫血以及骨髓造血功能下降,对肝功能有损伤作用,且虾头中残留的隐蔽态T-2毒素对小鼠的损伤作用高于肌肉。
After 20 d accumulation toxicity test of T-2 toxin, the free T-2 toxin in shrimp was quantitatively detected using LC-MS/MS. The shrimp head and muscle homogenate were administered to mice for 7 days, the blood routine and serum indexes in mice were detected to study the toxicity effect of residual masked T-2 toxin in Litopenaeus van-namei head and muscle on routine blood and serology of mice. The results showed that there was no free T-2 toxin in shrimp during 20 d accumulation toxicity test of T-2 toxin. And low-dose shrimp had no effect on mice. However, the high dose group shrimp caused an increase in neutrophils in mice, and erythrocyte system and platelet were significantly decreased （ P 〈 0. 05 ） . Moreover, serum biochemical indicators were significantly different （ P 〈 0. 05 ） . The damage of the head to the mice was higher than that of the muscle. Research showed that there was masked T-2 toxin in the infected shrimp, which had immune toxicity and blood toxicity to mice and led to the occurrence of inflamma-tion, symptoms of anaemia, reduced the bone marrow hematopoietic function and damaged liver function. The dam-age of residual masked T-2 toxin in the head to the mice was higher than that of the muscle.
出处
《浙江农业学报》
CSCD
北大核心
2017年第7期1110-1118,共9页
Acta Agriculturae Zhejiangensis
基金
国家自然科学基金面上项目(31171634
31371777)
广东省科技计划项目(2014B020205006)
