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上海中医药大学 附属岳阳中西医结合医院,上海 200437
王立玉,硕士,主治医师,从事中医药治疗恶性肿瘤研究,E-mail:wangliyu2009@126.com
* 沈雁,博士后,研究员,从事中医药治疗心血管疾病研究,Tel:021-65161782,E-mail:sheny26@126.com
收稿日期:2021-06-23,
网络出版日期:2021-08-20,
纸质出版日期:2021-10-20
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王立玉,沈雁,刘睿斯等.温阳活血化痰方对蒽环类药物心脏损伤的保护机制[J].中国实验方剂学杂志,2021,27(20):80-86.
WANG Li-yu,SHEN Yan,LIU Rui-si,et al.Protective Effect of Wenyang Huoxue Huatan Prescription on Cardiotoxicity Induced by Anthracyclines[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(20):80-86.
王立玉,沈雁,刘睿斯等.温阳活血化痰方对蒽环类药物心脏损伤的保护机制[J].中国实验方剂学杂志,2021,27(20):80-86. DOI: 10.13422/j.cnki.syfjx.20212021.
WANG Li-yu,SHEN Yan,LIU Rui-si,et al.Protective Effect of Wenyang Huoxue Huatan Prescription on Cardiotoxicity Induced by Anthracyclines[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(20):80-86. DOI: 10.13422/j.cnki.syfjx.20212021.
目的
2
研究温阳活血化痰方对阿霉素心脏损伤的保护作用。
方法
2
将SD大鼠随机分为6组,空白组,模型组,温阳活血化痰方低、中、高剂量组,奥诺先组。除空白组外,其余大鼠每周给予2.5 mg·kg
-1
阿霉素腹腔注射6周,累计剂量为15 mg·kg
-1
。温阳活血化痰方低、中、高剂量组每日分别予4.86,9.72,19.44 g·kg
-1
灌胃。空白组、模型组、奥诺先组每日予生理盐水10 mL·kg
-1
灌胃。奥诺先组每周于阿霉素前30 min腹腔注射奥诺先25 mg·kg
-1
,干预6周。观察大鼠一般状况并监测体质量;高分辨率小动物超声影像系统检测大鼠心功能;苏木素-伊红(HE)染色观察大鼠心肌组织病理形态学改变;蛋白免疫印迹法(Western blot)检测大鼠心肌组织中微管相关蛋白I轻链3(LC3)Ⅱ,自噬关键分子酵母Atg6同系物(Beclin-1),p62蛋白的表达变化。
结果
2
与空白组比较,模型组大鼠皮毛无光泽,进食量及活动量减少,部分便溏,精神不振,反应迟钝;体质量显著降低(
P
<
0.01);左心室射血分数(LVEF)和左心室缩短率(LVFS)均显著降低(
P
<
0.01);心肌细胞变性、水肿、断裂、溶解;心肌间质间隙扩大;心肌纤维染色不均;可见炎性细胞浸润;大鼠心肌组织中Beclin-1,LC3Ⅱ表达显著增加(
P
<
0.01),p62显著降低(
P
<
0.01)。与模型组比较,温阳活血化痰方高、中剂量组体质量,LVEF,LVFS均显著增加(
P
<
0.01);心肌组织病理损伤不同程度减轻;LC3Ⅱ,Beclin-1蛋白表达下降(
P
<
0.05,
P
<
0.01),p62表达增加(
P
<
0.05,
P
<
0.01)。
结论
2
温阳活血化痰方能有效地防治阿霉素心脏损伤,其作用可能与抑制心肌细胞自噬机制相关,以高剂量效果更佳。
Objective
2
To study the protective effect of the Wenyang Huoxue Huatan prescription (WYHXHT) on cardiotoxicity induced by adriamycin.
Method
2
SD rats were randomly divided into the following six groups: a normal control group, an adriamycin model group, a low-dose (4.86 g·kg
-1
) WYHXHT group, a middle-dose (9.72 g·kg
-1
) WYHXHT group, a high-dose (19.44 g·kg
-1
) WYHXHT group, and a dexrazoxane group. Except for the normal control group, the rats in other groups received intraperitoneal injection of 2.5 mg·kg
-1
adriamycin, once a week for six weeks, with a cumulative dose of 15 mg·kg
-1
. The normal control group, the adriamycin model group, and the dexrazoxane group received 10 mL·kg
-1
normal saline daily by gavage. In the dexrazoxane group, the rats were subjected to intraperitoneal injection of 25 mg·kg
-1
dexrazoxane 30 min before doxorubicin administration, once a week for six weeks. The general condition of rats was observed and their body weight was monitored. A high-resolution micro-ultrasound imaging system was used to detect rat cardiac function. Hematoxylin-eosin (HE) staining was performed to observe the pathological changes of myocardial tissues of rats. Western blot was used to detect the protein expression of microtubule-associated protein 1 light chain 3 (LC3) Ⅱ, the mammalian homolog of yeast Atg6 (Beclin-1), and p62 protein in rat myocardial tissues.
Result
2
Compared with the normal control group, rats in the adriamycin model group showed dull fur, reduced food intake and activity, loose stool, low energy, and slow response. Besides, it also displayed reduced body weight (
P
<
0.01), decreased left ventricular ejection fraction (LVEF) and left ventricular fractional shortening (LVFS) (
P
<
0.01), myocardial cell degeneration, edema, rupture, and dissolution, expansion of myocardial interstitium, uneven staining of myocardial fiber, visible inflammatory cell infiltration, up-regulated expression of Beclin-1 and LC3Ⅱ in rat myocardial tissues (
P
<
0.01), and down-regulated p62 expression (
P
<
0.01). Compared with the adriamycin model group, the medium- and high-dose WYHXHT groups exhibited increased body weight, LVEF, and LVFS (
P
<
0.01), relieved pathological injury of myocardial tissues, down-regulated expression of LC3Ⅱ and Beclin-1 (
P
<
0.05,
P
<
0.01), and up-regulated expression of p62 (
P
<
0.05,
P
<
0.01).
Conclusion
2
WYHXHT can effectively prevent and treat adriamycin-induced cardiotoxicity, and its effect may be related to the inhibition of myocardial cell autophagy. The effect is dominant in the high-dose group.
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