基于斑马鱼模型探讨八宝丹对阿霉素所致心肌损伤的保护作用及其机制
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1.福建中医药大学中西医结合研究院;2.福建省中西医结合老年性疾病重点实验室;3.福建省高校中西医结合基础重点实验室

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国家自然科学基金(82204925);福建中医药大学校管课题(X2020010-重点);福建中医药大学人才专项(X2020013-人才)。


The Protective Effect and Mechanism of BBD on Doxorubicin-induced Myocardial Injury in Zebrafish model
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1.Academy of Integrative Medicine,Fujian University of Traditional Chinese Medicine;2.Fujian Key Laboratory of Integrative Medicine on Geriatrics;3.Fujian Key Laboratory of Basic Integrative Medicine

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National Natural Science Foundation of China (82204925); School Management Project of Fujian University of Traditional Chinese Medicine (X2020010-Key); Talent Program of Fujian University of Traditional Chinese Medicine (X2020013-Talent)

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    摘要:

    目的 采用斑马鱼模型探讨八宝丹对阿霉素所致心脏损伤的保护作用及其机制。 方法 建立化疗药物阿霉素(Doxorubicin, Dox)诱导的斑马鱼心肌损伤模型,在体视显微镜下观察八宝丹(BBD)在不同浓度下对心包水肿比例及心率的干预作用;采用转基因斑马鱼Tg(mpx:EGFP)原位观察八宝丹对心脏中性粒细胞浸润的抑制作用;观察八宝丹对超氧化物歧化酶(SOD)、过氧化氢酶(CAT)及丙二醛(MDA)的影响;Real-time qPCR检测铁死亡相关因子包括谷胱甘肽过氧化物酶4(gpx4a)、前列腺素内过氧化物合成酶(ptgs2)、花生四烯酸5脂氧合酶(alox5a)、酰基辅酶A合成酶长链家族成员4(acsl4)的mRNA表达;采用亚铁离子荧光探针检测斑马鱼心脏亚铁离子的积累情况。 结果 八宝丹能够减缓Dox导致的斑马鱼心包水肿和心率减慢,减少心脏中性粒细胞的浸润(P<0.05);降低MDA的浓度(P<0.05),同时增强SOD和CAT的活性(P<0.05);显著抑制铁死亡,减少斑马鱼心脏亚铁离子的积累,抑制ptgs2、alox5a、acsl4的表达(P<0.05),同时促进gpx4a的表达(P<0.05)。 结论 八宝丹通过抑制脂质过氧化的发生调节铁死亡从而减弱Dox诱导的斑马鱼心肌损伤,改善心功能。

    Abstract:

    Objective To investigate the protective effect and mechanism of BBD on Doxorubicin (Dox) induced myocardial injury in zebrafish. Method A zebrafish model of myocardial injury induced by chemotherapy drug Dox was established. The effects of BBD at different concentrations on pericardial edema ratio and heart rate were observed under a stereo microscope. Transgenic zebrafish Tg(mpx:EGFP) was used to observe the inhibitory effect of BBD on neutrophil infiltration in the heart in situ., and observe the effect of BBD on SOD, CAT and MDA. Real-time qPCR was used to detect the expression of ferroptosis related factors gpx4a, ptgs2, alox5a, acsl4. The accumulation of ferrous ion in zebrafish heart was detected using a ferrous ion fluorescent probe. Results BBD significantly improved Dox induced pericardial edema, heart rate and neutrophil infiltration in zebrafish (P<0.05), significantly increased the reduction of SOD and CAT activity (P<0.05), and decreased the concentration of MDA (P<0.05). Compared with the Dox group, the Dox group showed significantly increased expression of gpx4a (P<0.05) and decreased expression of ptgs2, alox5a, and acsl4 (P<0.05), and significantly inhibited Dox induced ferroptosis in zebrafish hearts. Conclusion BBD can attenuate Dox induced myocardial injury in zebrafish by inhibiting the occurrence of lipid peroxidation and regulating ferroptosis.

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  • 收稿日期:2023-10-20
  • 最后修改日期:2024-02-19
  • 录用日期:2024-03-12
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