异烟肼对斑马鱼幼鱼发育毒性及运动行为学的影响

Impact of isoniazid on developmental toxicity and behavior of zebrafish larvae

以斑马鱼幼鱼为研究对象,研究异烟肼对幼鱼发育毒性和行为学的影响。用不同浓度的异烟肼分别处理发育至72hpf的斑马鱼幼鱼,观察幼鱼的死亡率、畸形率及形态变化,分析幼鱼行为学轨迹。异烟肼(≥4 mmol/L)对斑马鱼幼鱼有致死作用,随着浓度的增加和作用时间延长而增强。异烟肼对斑马鱼幼鱼的发育过程有致畸作用,表现为脊柱弯曲、卵黄囊吸收延滞、心包水肿、鱼鳔缺失、体长发育延迟和器官空泡化等。随着给药浓度的增加和作用时间的延长,异烟肼组幼鱼行为轨迹减少,运动次数和运动速度显著降低。结果表明,异烟肼(≥4 mmol/L)对斑马鱼幼鱼具有致死和致畸作用,对幼鱼的运动行为有抑制作用,并且呈现时间和剂量依赖性。

We investigated the impact of isonizid on developmental toxicity and behavior of zebrafish larvae. Zebrafish larvae of 72 hpf growth were processed with different concentrations isonizid. We then observed their mortality, malformation rate, morphology variation and analyzed their behavior trajectory. Higher concentration isoniazid （ ≥4 mmol/L） has lethal effect to zebrafish larvae, which is strengthened with the increase of isoniazid concentration and action time. Isoniazid has abnormal effect on their developmental process, including spinal curvature, increased yolk sac area, pericardial edema, swim bladder loss, developmental delay of body length and organ vacuolation. The larva of isoniazid group have less behavior trajectory, lower movement number and velocity with the increase of drug concentration and action time. Results demonstrate that isoniazid （≥4 mmol/L） has lethal and abnormal effect on zebrafish larvae, and inhibiting effect on their movement behavior, dependent on dose and time.