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江西中医药大学 药学院,南昌 330004
谢慧慧,在读硕士,从事老年性疾病的中药防治研究,Tel:0791-87118919, E-mail:850693034@qq.com
刘波,博士,副教授,硕士生导师,从事老年性疾病的中药防治研究,Tel:0791-87118919, E-mail:liubojxutcm@163.com
收稿日期:2019-01-28,
网络出版日期:2019-05-07,
纸质出版日期:2019-09-20
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谢慧慧, 王莹, 杨硕, 等. 二仙汤对围绝经期大鼠心脏电生理的影响[J]. 中国实验方剂学杂志, 2019,25(18):43-48.
Hui-hui XIE, Ying WANG, Shuo YANG, et al. Effect of Erxian Decoction on Cardiac Electrophysiology in Peri-menopausal Rats[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(18): 43-48.
谢慧慧, 王莹, 杨硕, 等. 二仙汤对围绝经期大鼠心脏电生理的影响[J]. 中国实验方剂学杂志, 2019,25(18):43-48. DOI: 10.13422/j.cnki.syfjx.20191601.
Hui-hui XIE, Ying WANG, Shuo YANG, et al. Effect of Erxian Decoction on Cardiac Electrophysiology in Peri-menopausal Rats[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(18): 43-48. DOI: 10.13422/j.cnki.syfjx.20191601.
目的:
2
探讨二仙汤对围绝经期大鼠心脏电生理的作用及机制。
方法:
2
雌性SD大鼠,根据体质量随机分组,分为假手术组,模型组,戊酸雌二醇组(8×10
-4
g·kg
-1
·d
-1
),二仙汤低、中、高剂量组(4,8,12 g·kg
-
·
1
d
-1
)。除假手术组外,其余各组大鼠均彻底摘除卵巢复制围绝经期大鼠模型。同时分别灌胃给药,假手术组和模型组则灌胃等量生理盐水,每天1次,连续80 d。以生物信号采集仪连接Ⅱ导联电极记录大鼠心电图,酶联免疫吸附测定(ELISA)检测大鼠血清中雌二醇(E
2
)的含量,苏木素-伊红(HE)染色观察大鼠子宫病理形态学变化,蛋白免疫印迹法(Western bot)检测大鼠心肌组织中雌激素
α
受体(ER
α
)蛋白的表达。
结果:
2
与假手术组比较,模型组大鼠心电图P波,R波,T波幅度显著减小(
P
<
0.01),PR间期,QRS时程,QT间期不同程度的缩短,大鼠血清中E
2
水平显著降低(
P
<
0.01);大鼠子宫明显干瘪,皱缩,子宫内膜层变薄,腺体数量明显减少;心肌组织ER
α
受体蛋白表达显著降低(
P
<
0.01)。与模型组比较,二仙汤各剂量组均能改善上述大鼠子宫的病理变化,中、高剂量二仙汤能显著升高E
2
水平(
P
<
0.01),显著逆转上述子宫的病理变化,上调ER
α
受体蛋白的表达(
P
<
0.01)。
结论:
2
二仙汤能改善围绝经期大鼠的心脏电生理变化,其机制可能与提高大鼠体内雌激素活性和雌激素受体表达有关。
Objective:
2
To explore the effect and mechanism of Erxian decoction on peri-menopausal cardiac electrophysiology in rats.
Method:
2
Female sprague-dawley rats were randomly divided into six groups: sham operation group
model group
estradiol valerate group
and low
medium and high-dose Erxian decoction groups. Except the sham operation group
the rats in the other groups were completely removed from the ovarian replication peri-menopausal rat model. At the same time
estradiol valerate group (8×10
-4
g·kg
-1
·d
-1
)
low-dose Erxian decoction group (4 g·kg
-1
·d
-1
)
middle-dose Erxian decoction group (8 g·kg
-1
·d
-1
) and high-dose Erxian decoction group (12 g·kg
-1
·d
-1
)
sham operation group and model group were given the same amount of normal saline. The administration was given once a day for 80 consecutive days. The electrocardiogram of rats was recorded by biosignal detector connected to lead Ⅱ electrode. The content of estradiol (E
2
) in rat serum was detected by enzyme-linked immuno sorbent assay (ELISA). The pathological changes of rat uterus were observed by hematoxylin-eosin. The expression of the estrogen alpha receptor (ER
α
) protein was detected by Western blot method in myocardial tissue of rat.
Result:
2
Compared with the sham operation group
the amplitudes of P wave
R wave and T wave in the electrocardiogram of the model group were significantly decreased (
P
<
0.01)
and the PR interval
QRS time course and QT interval were shortened to different degrees. The E
2
level was significantly lower (
P
<
0.01). The uterus was obviously shriveled and shrank
the endometrial layer became thinner
and the number of glands reduced significantly. The expression of ER
α
receptor protein in myocardial tissue was significantly decreased (
P
<
0.01). Compared with the model group
the Erxian decoction group could improve the pathological changes of ECG in the above rats. The medium and high-dose Erxian decoction can significantly increase the E
2
level (
P
<
0.01)
reverse significantly the pathological changes of the uterus
and up-regulate the expression of ER
α
receptor protein (
P
<
0.01).
Conclusion:
2
Erxian decoction can improve cardiac electrophysiological changes in peri-menopausal rats
and its mechanism may be related to the increase of estrogen activity and estrogen receptor expression in rats.
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