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1.广州中医药大学,广州 510000;
2.广州中医药大学 附属骨伤科医院,广州 510240;
3.深圳市沙井人民医院,广东 深圳 518104;
4.广东省中医院,广州 510030
周文明,在读博士,从事中医药防治脊柱退行性疾病的临床与实验研究,E-mail:wm13462004@163.com
林一峰,主任医师,博士生导师,从事中医药防治脊柱退行性疾病的临床与实验研究,E-mail:lyf@gzucm.edu.cn
收稿日期:2019-04-13,
网络出版日期:2019-06-18,
纸质出版日期:2019-10-05
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周文明, 林一峰, 张震, 等. 补肾壮督方对大鼠退变椎间盘细胞线粒体凋亡通路的影响[J]. 中国实验方剂学杂志, 2019,25(19):25-31.
Wen-ming ZHOU, Yi-feng LIN, Zhen ZHANG, et al. Effect of Bushen Zhuangdu Recipe on Mitochondrial Apoptotic Pathway in Degenerative Intervertebral Disc Cells in Rats[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(19): 25-31.
周文明, 林一峰, 张震, 等. 补肾壮督方对大鼠退变椎间盘细胞线粒体凋亡通路的影响[J]. 中国实验方剂学杂志, 2019,25(19):25-31. DOI: 10.13422/j.cnki.syfjx.20191937.
Wen-ming ZHOU, Yi-feng LIN, Zhen ZHANG, et al. Effect of Bushen Zhuangdu Recipe on Mitochondrial Apoptotic Pathway in Degenerative Intervertebral Disc Cells in Rats[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(19): 25-31. DOI: 10.13422/j.cnki.syfjx.20191937.
目的:
2
观察补肾壮督方对大鼠退变椎间盘细胞凋亡的影响,探讨其改善椎间盘退变的机制。
方法:
2
100只SD雄性大鼠,采用纤维环全层针刺造模,随机分为空白组,模型组,补肾壮督方低、中、高剂量组(0.38,0.77,1.53 g·kg
-1
),连续中药灌胃4周后,苏木素-伊红(HE)染色观察大鼠椎间盘组织病理学变化;原位末端转移酶标记法(TUNEL)检测退变椎间盘中髓核细胞凋亡率,蛋白免疫印迹法(Western blot)检测椎间盘组织中活化半胱氨酸蛋白酶-3(active Caspase-3),B淋巴细胞瘤-2(Bcl-2),细胞色素C(cytC)及Bcl-2相关X蛋白(Bax)蛋白水平。
结果:
2
与空白组比较,模型组大鼠椎间盘组织病理学评分显著增加,髓核细胞凋亡率明显增加(
P
<
0.05),active Caspase-3,cytC和Bax表达量均明显增加(
P
<
0.05),Bcl-2表达量明显下降(
P
<
0.05)。与模型组比较,补肾壮督方低、中、高剂量组组织病理学评分明显降低(
P
<
0.05),髓核细胞凋亡率明显减少(
P
<
0.05),active Caspase-3,cytC及Bax表达量均明显下降(
P
<
0.05),Bcl-2表达量明显增加(
P
<
0.05)。
结论:
2
补肾壮督方可能通过减少active Caspase-3,cytC和Bax蛋白表达,增加Bcl-2蛋白表达,抑制线粒体凋亡通路,并存在一定剂量依赖性,从而改善椎间盘退变。
Objective:
2
To explore the mechanism of mitochondrial apoptotic pathway in rat degenerative intervertebral disc cells in improving intervertebral disc degeneration under the action of Bushen Zhuangdu recipe.
Method:
2
The 100 SD male rats were randomly divided into blank group
model group
low
medium and high dose Bushen Zhuangdu recipe group (0.38
0.77
1.53 g·kg
-1
). Histopathological changes of rat intervertebral discs were observed by hematoxylin-eosin(HE) staining after 4 weeks of continuous administration of Chinese medicine. The apoptotic rate of nucleus pulposus cells in degenerative intervertebral discs was detected by TUNEL(terminal deoxynucleotidyltransferase-mediated dUTP-biotin nick end labeling)
and the levels of active Cysteinyl aspartate-specific proteinase-3(active Caspase-3)
B cell leukemia-2(Bcl-2)
cytochrome C (cytC) and Bcl-2-associated X protein(Bax) protein in intervertebral discs were detected by Western blot.
Result:
2
Compared with blank group
the histopathological score of intervertebral disc in the model group was significantly increased
the apoptosis rate of nucleus pulposus was significantly increased (
P
<
0.05)
the expression levels of active Caspase-3
cytC and Bax were significantly increased (
P
<
0.05)
and the expression levels of Bcl-2 were significantly decreased (
P
<
0.05). After the intervention of Bushen Zhuangdu recipe.Compared with model group
the histopathological score of Bushen Zhuangdu recipe low
medium and high dose groups were significantly reduced(
P
<
0.05)
the expression levels of active Caspase-3
cytC and Bax were significantly decreased (
P
<
0.05)
and the expression levels of Bcl-2 were significantly increased (
P
<
0.05).
Conclusion:
2
Bushen Zhuangdu recipe may improve the degeneration of intervertebral disc by reducing the expression of active Caspase-3
cytC and Bax
increasing the expression of Bcl-2 and inhibiting the apoptotic pathway of mitochondria in a dose-dependent manner.
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