光照法和光照与咖啡因联合法对斑马鱼失眠模型评价研究
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上海中医药大学附属岳阳中西医结合医院

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1.上海市中医药事业发展三年行动计划(2018-2020年)上海市中医诊疗模式创新试点建设项目(ZY(2018-2020)-FWTX-6011); 2.上海市中医药事业发展三年行动计划(2018-2020年)医疗机构治未病服务能力提升项目(ZY(2018-2020)-ZWB-1001); 3.国家自然科学基金( 81373624);


Evaluation study on zebrafish insomnia model by illumination method and combined illumination and caffeine method
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Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, affiliated to Shanghai University of Traditional Chinese Medicine

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    摘要:

    【】 目的:利用斑马鱼建立不同睡眠剥夺模型,为失眠的基础研究提供更多可重复性的实用建模参考方案。方法:用持续光照(150lux)和光照加咖啡因两种干预手段诱导斑马鱼失眠模型,随机将斑马鱼分为对照组、光照组、联合组和咖啡因组(100μmol/l)。利用旷场实验和昼夜节律行为学实验观察各组斑马鱼运动能力的区别;利用Qpcr技术与Elisa技术检测相关睡眠基因与5-HT神经递质的表达与分泌情况。结果:1、光照组斑马鱼睡眠时间较空白对照组明显减少(P=0.01),联合组与咖啡因组斑马鱼睡眠时间无统计学差异(见表1);光照组斑马鱼白天静息时间较空白对照组明显减少(P<0.01),联合组与咖啡因组斑马鱼白天静息时间增加(P<0.01)(见表3)。各组斑马鱼黑灯静息时间均无统计学差异(见表3); 光照组斑马鱼白天移动距离较空白对照组明显增加(P<0.01),光照组斑马鱼黑天10h活动距离较空白对照组明显增加(P<0.01),联合组与咖啡因组斑马鱼黑天活动距离无统计学差异(见表4);光照组斑马鱼睡眠回合较空白对照组明显减少(P<0.01),联合组与咖啡因组斑马鱼睡眠回合较空白对照组明显增加(P<0.01)(见表2)。2、光照组中心区域游动距离百分比较空白组降低(P<0.05),而咖啡因组中心区域游动距离百分比较光照组明显降低(P<0.01)(见图6);光照组中心区域游动时间百分比较空白组降低(P<0.05),咖啡因组中心区域游动时间百分比较光照组明显降低(P<0.01)(见图7)。3、早上六点与中午十二点光照组斑马鱼HTR1aa mRNA水平表达高于空白组(P<0.05)(见图10、11),光照组与联合组斑马鱼体内HTR1ab mRNA水平表达均无明显统计学差异(P>0.05)(见图12、13);与空白组相比,早上6点时光照组的5-HT分泌量均减少(P<0.01),中午12点,光照组与联合组5-HT量均减少(P<0.01),下午6点时光照组与联合组分泌量依然低于空白组(P<0.01)。结论:于特定时间(凌晨2:00)给予斑马鱼幼鱼恒定光照法(150lux)并持续6h以上,结果发现光照后的斑马鱼移动时间增加、睡眠时间减少;HTR1aa以及5-HT等生物因子昼夜节律相位提前改变。而联合组与咖啡因组的干预使斑马鱼的夜间移动距离减少、睡眠回合增多,HTR1aa基因以及5-HT等生物因子昼夜节律相位的改变不如光照组迅速,提示单纯光照法最适用于斑马鱼幼鱼失眠模型的建立。在光照的同时加入适量的咖啡因并不能起到协同作用。相比光照联合咖啡因,光照剥夺更适合作为斑马鱼失眠的长效的造模手段。该研究暗示光照对睡眠的调控机制与HTR1aa基因和5-HT的信号通路有关。

    Abstract:

    【】 Objective: to establish different sleep deprivation models using zebrafish to provide more reproducible and practical modeling reference solutions for basic research on insomnia. Methods: Zebrafish insomnia model was induced by two interventions: continuous light (150 lux) and light plus caffeine, and the zebrafish were randomly divided into control, light, combined and caffeine (100 μmol/l) groups. The difference in locomotor ability of zebrafish in each group was observed by using open field experiment and circadian rhythm behavioral experiment; the expression and secretion of related sleep genes and 5-HT neurotransmitter were detected by using Qpcr technology and Elisa technology. Results: 1. The sleep time of zebrafish in the light group was significantly reduced compared with that of the blank control group (P=0.01), and there was no statistically significant difference between the sleep time of zebrafish in the combined group and the caffeine group (see Table 1); the resting time of zebrafish during the daytime in the light group was significantly reduced compared with that of the blank control group (P<0.01), and the resting time during the daytime of zebrafish in the combined group and the caffeine group was increased (P<0.01) (Table 3). There was no statistically significant difference in the black light resting time of zebrafish in all groups (Table 3); the daytime moving distance of zebrafish in the light group was significantly increased compared with that of blank control group (P < 0.01), and the 10-h activity distance of zebrafish in the light group in the dark day was significantly increased compared with that of blank control group (P < 0.01), and there was no statistically significant difference in the dark day activity distance of zebrafish in the combined and caffeine groups (Table 4); and the sleep rounds of zebrafish in the light group was blank control group was significantly reduced (P < 0.01), and the sleep rounds of zebrafish in the combined and caffeine groups were significantly increased (P < 0.01) compared to the blank control group (Table 2).2. The percentage of swimming distance in the central region of the light group was reduced (P < 0.05) compared to the blank group, while the percentage of swimming distance in the central region of the caffeine group was significantly reduced (P < 0.01) compared to the light group (see Figure 6); the light group The percentage of swimming time in the central region was lower than that in the blank group (P < 0.05), while the percentage of swimming time in the central region was significantly lower in the caffeine group than that in the light group (P < 0.01) (Fig. 7).3. The expression of HTR1aa mRNA level in zebrafish in the light group was higher than that in the blank group at 6:00 a.m. and 12:00 p.m. (P < 0.05) (Figs. 10 and 11), and the expression of There was no statistically significant difference in the expression of HTR1ab mRNA levels between the light group and the combined group (P > 0.05) (Figs. 12 and 13); compared with the blank group, the amount of 5-HT secretion in the light group was reduced in both groups at 6:00 a.m. (P < 0.01), and at 12:00 p.m. the amount of 5-HT was reduced in both the light and combined groups (P < 0.01), and the amount in both groups remained lower than that in the blank group at 6:00 p.m. (P<0.01).

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  • 收稿日期:2024-06-17
  • 最后修改日期:2024-08-19
  • 录用日期:2024-11-29
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