FOLLOWUS
Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing (100700), China
Prof. YU Xiao-chun, E-mail: yuxc@sina.com
纸质出版日期:2023-02,
网络出版日期:2022-07-15,
录用日期:2022-03-21
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白细胞介素-1β/胰岛素样生长因子1介导电针改善原发性高血压所致心肌纤维化的机制研究[J]. 中国结合医学杂志(英文版), 2023,29(2):162-169.
XIN Juan-juan, GAO Jun-hong, LIU Qun, et al. Involvement of Interleukin-1β/Insulin-Like Growth Factor 1 in Ameliorating Effects of Electroacupuncture on Myocardial Fibrosis Induced by Essential Hypertension[J]. Chinese Journal of Integrative Medicine, 2023,29(2):162-169.
白细胞介素-1β/胰岛素样生长因子1介导电针改善原发性高血压所致心肌纤维化的机制研究[J]. 中国结合医学杂志(英文版), 2023,29(2):162-169. DOI: 10.1007/s11655-022-2897-0.
XIN Juan-juan, GAO Jun-hong, LIU Qun, et al. Involvement of Interleukin-1β/Insulin-Like Growth Factor 1 in Ameliorating Effects of Electroacupuncture on Myocardial Fibrosis Induced by Essential Hypertension[J]. Chinese Journal of Integrative Medicine, 2023,29(2):162-169. DOI: 10.1007/s11655-022-2897-0.
目的:
2
观察电针 "内关" 对自发性高血压大鼠心肌纤维化的影响
并初步探究白细胞介素1β (IL-1β) 、胰岛素样生长因子1 (IGF-1) 和转化生长因子β1 (TGF-β1) 的介导作用.
方法:
2
选用12周龄雄性Wistar Kyoto (WKY) 大鼠9只为正常组; 另选12周龄自发性高血压大鼠 (SHR) 27只
随机分为SHR组、SHR+EA组和SHR+Sham组
每组9只. 其中
电针组选取 "内关" 进行干预 (2 Hz/15 Hz
1 mA
持续30 min)
每日1次
共8周. 假电针组仅于 "内关" 浅刺
不予电刺激. 电针干预结束后
采用形态学
生化检测等方法分别检测心肌包膜中I型胶原 (Col I) 、Ⅲ型胶原 (Col Ⅲ) 和IGF-1、1L-1β、TGF-β1、基质金属蛋白酶 (MMP) -2和MMP-9水平的组织病理学变化.
结果:
2
与正常组比较
模型组大鼠反应心肌纤维化的Col I和Col Ⅲ的平均荧光强度升高 (
P
<
0.01) 与模型组比较
电针干预8周后Col I和Col Ⅲ的平均荧光强度均降低 (
P
<
0.01) ; 与正常组比较
模型组大鼠血清及心肌组织IGF-1、1L-1β、TGF-β1升高 (
P
<
0.05)
而心肌组织基质金属蛋白酶 (MMP) -9 mRNA表达降低 (
P
<
0.05)
电针干预可明显逆转上述指标的异常 (
P
<
0.05
P
<
0.01) . 此外
心肌组织及血清中IL-1β、IGF-1、TGF-β1的含量分别与收缩压和羟脯氨酸呈正相关 (
P
<
0.01) .
结论:
2
电针干预可能是通过调控1L-1β/IGF-1-TGF-β1-MMP9通路实现对高血压性心肌纤维化的缓解作用.
Objective:
2
To investigate the effect of electroacupuncture (EA) at Neiguan (PC 6) on myocardial fibrosis in spontaneously hypertensive rats (SHRs)
and to explore the contribution of interleukin-1β (IL-1β)
insulin-like growth factor 1 (IGF-1)
and transforming growth factor β1 (TGF-β1) to the effects.
Methods:
2
Nine 12-weeks-old Wistar Kyoto (WKY) male rats were employed as the normal group. Twenty-seven SHRs were equally randomized into SHR
SHR+EA
and SHR + sham groups. EA was applied at bilateral PC 6 once a day 30 min per day in 8 consecutive weeks. After 8-weeks EA treatment at PC 6
histopathologic changes of collagen type Ⅰ (Col Ⅰ)
collagen type Ⅲ (Col Ⅲ) and the levels of IGF-1
1L-1β
TGF-β1
matrix metalloproteinase (MMP)-2 and MMP-9 were examined in myocardial tissure respectively.
Results:
2
After 8-weeks EA treatment at PC 6
the enhanced myocardial fibrosis in SHRs were characterized by the increased mean fluorescence intensity of Col Ⅰ and Col Ⅲ in myocardium tissue (
P
<
0.01). All these abnormal alterations above in SHR + EA group was significantly lower compared with the SHR group (
P
<
0.01). Meanwhile
the increased levels of IL-1β
IGF-1
TGF-β1 in serum or myocardial tissue of SHRs
diminished MMP 9 mRNA expression in SHRs were also markedly inhibited after 8 weeks of EA treatment (
P
<
0.05 or
P
<
0.01). Furthermore
the contents of IL-1β
IGF-1
TGF-β1 in myocardial tissue were positively correlated with the systolic blood pressure and hydroxyproline respectively (
P
<
0.01).
Conclusion:
2
EA at bilateral PC 6 could ameliorate cardiac fibrosis in SHRs
which might be mediated by regulation of 1L-1β/IGF-1-TGF-β1-MMP9 pathway.
电针原发性高血压心肌纤维化白细胞介素-1β胰岛素样生长因子1
electroacupuncturespontaneously hypertensive ratsmyocardial fibrosisinterleukin-1βinsulin-like growth factor 1
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