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1.成都中医药大学 药学院,成都 611137
2.成都中医药大学 附属医院,成都 610075
Received:11 January 2022,
Published Online:28 March 2022,
Published:05 October 2022
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王立映,王建,樊亚梅等.3种冰片防治AMI模型大鼠的抗炎及调控HIF-1α/VEGF[J].中国实验方剂学杂志,2022,28(19):61-72.
WANG Liying,WANG Jian,FAN Yamei,et al.Anti-inflammation and Regulation of HIF-1α/VEGF of 3 Kinds of Borneolum in Prevention and Treatment of AMI Model Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(19):61-72.
王立映,王建,樊亚梅等.3种冰片防治AMI模型大鼠的抗炎及调控HIF-1α/VEGF[J].中国实验方剂学杂志,2022,28(19):61-72. DOI: 10.13422/j.cnki.syfjx.20221009.
WANG Liying,WANG Jian,FAN Yamei,et al.Anti-inflammation and Regulation of HIF-1α/VEGF of 3 Kinds of Borneolum in Prevention and Treatment of AMI Model Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(19):61-72. DOI: 10.13422/j.cnki.syfjx.20221009.
目的
2
探讨艾片(左旋龙脑)、天然冰片(右旋龙脑)、冰片(合成龙脑)不同剂量对实验性急性心梗(AMI)模型大鼠心电生理及抗炎、调控缺氧诱导因子-1
α
(HIF-1
α
)/血管内皮生长因子(VEGF)心血管保护的可能机制。
方法
2
SD雄性成年大鼠,按体重随机分为假手术组、模型组、溶剂模型组、硝酸甘油组、天然冰片高、中、低剂量(0.6、0.3、0.15 g·kg
-1
)组、艾片及合成冰片高、中、低剂量(0.2、0.1、0.05 g·kg
-1
)组,每组10只。按10 mL·kg
-1
灌胃,预给药3 d,末次给药30 min后,施冠状动脉左前降支(LAD)结扎造模,将模型成功大鼠连续治疗3 d。采用BL-420N生物系统分析造模前后及治疗3 d后心电图及心率变异性(HRV),实时荧光定量聚合酶链式反应(Real-time PCR)检测心肌组织中白细胞介素-1
β
(IL-1
β
)、白细胞介素-6(IL-6) mRNA表达量,蛋白免疫印迹法、免疫组织化学法检测血管内皮生长因子受体1(VEGFR1)、HIF-1
α
、CD34蛋白表达水平。
结果
2
与假手术组比较,模型组造模当天及干预3 d后心率、心电ST段、T波、QRS时限、QTC间期、Q波显著升高,HRV及T波明显改变(
P
<
0.05,
P
<
0.01);与溶剂模型组比较,造模当天艾片中、低剂量组、天然冰片组心率,艾片组、天然冰片高、中剂量、冰片高剂量组ST波幅,艾片组、天然冰片中、低剂量、冰片高剂量组HRV参数,艾片高、中剂量、天然冰片低剂量、冰片组低频与高频范围内的功率谱比值(LF/HF),艾片、冰片高剂量、天然冰片中剂量组T波波幅,艾片中、低剂量、天然冰片高、中剂量组QTC间期,艾片与天然冰片各自高、低剂量、冰片组QRS时限,均明显减小或缩短(
P
<
0.05,
P
<
0.01);治疗3 d后艾片组、天然冰片高、中剂量、冰片中剂量组心率,艾片组、天然冰片高、中剂量、冰片高剂量组的ST段波幅,艾片与天然冰片各自高剂量、冰片高、中剂量组的QTC间期与QRS时限及Q波波幅,艾片中剂量组QRS时限,天然冰片中剂量组QTC间期、冰片低剂量组Q波,皆显著减小或缩短(
P
<
0.01);艾片与天然冰片各自中、低剂量、冰片高、中剂量组的IL-1
β
、IL-6 mRNA表达量显著下调(
P
<
0.01);艾片、天然冰片各自高、中剂量、冰片高、低剂量组LF/HF明显减小(
P
<
0.05,
P
<
0.01);艾片高剂量、天然冰片组、冰片高、低剂量组HRV及天然冰片高、中剂量、冰片高剂量组T波波幅显著增大;艾片中、低剂量、天然冰片低剂量、冰片高剂量组HIF-1
α
、VEGFR1、CD34蛋白,天然冰片中剂量组VEGFR1、CD34蛋白表达明显上调(
P
<
0.05,
P
<
0.01)。
结论
2
3种冰片防治给药可不同程度改善AMI模型大鼠心率、心率变异性、心电图,可能会通过抗炎、促血管新生而发挥心肌保护作用。综合效应提示艾片较优,天然冰片略次、冰片次之。
Objective
2
To investigate the possible mechanism of different doses of
L
-Borneolum,Borneolum,and Borneolum Syntheticum in the electrophysiology,anti-inflammation,and regulation of hypoxia inducible factor-1
α
(HIF-1
α
)/vascular endothelial growth factor (VEGF) cardiovascular protection of the experimental acute myocardial infarction (AMI) rats.
Method
2
SD male adult rats were randomly divided into thirteen groups according to their body weight,namely the sham operation group,the model group,the solvent model group,the nitroglycerin group,the Borneolum high,medium,and low-dose (0.6,0.3, 0.15 g·kg
-1
) groups,the
L
-Borneolum high,medium,and low-dose (0.2,0.1, 0.05 g·kg
-1
) groups,and the Borneolum Syntheticum high,medium,and low-dose (0.2,0.1, 0.05 g·kg
-1
) groups,with 10 rats in each group. Rats were given 10 mL·kg
-1
by gavage for 3 d of pre-administration. Thirty minutes after the last administration,the left anterior descending coronary artery (LAD) was ligated to induce the model,and the successful rat model was continuously treated for 3 d. BL-420N biosystem was used to analyze the electrocardiogram (ECG) and heart rate variability (HRV) before and after modeling and after 3 d of treatment. Real-time quantitative polymerase chain reaction (Real-time PCR) was used to determine the mRNA expressions of interleukin-1
β
(IL-1
β
) and interleukin-6 (IL-6) in the myocardial tissue Western blot and immunohistochemistry were used to determine the protein expression levels of VEGF receptor 1 (VEGFR1),HIF-1
α
,and CD34.
Result
2
Compared with the sham operation group,the model group significantly increased the heart rate,ECG ST wave,T wave,QRS duration,QTC interval,and Q wave on the day of modeling and after 3 d of treatment,and significantly changed HRV and T wave (
P
<
0.05,
P
<
0.01). As compared with the solvent model group,on the day of modeling,the heart rate of the
L
-Borneolum medium and low-dose groups and the Borneolum groups,the ST wave of the
L
-Borneolum groups,the Borneolum high and medium-dose groups,and the Borneolum Syntheticum high-dose group,HRV parameters of the
L
-Borneolum groups,the Borneolum medium and low-dose groups,and the Borneolum Syntheticum high-dose group,LF/HF of the
L
-Borneolum high and medium-dose group,the Borneolum low-dose group,and the Borneolum Syntheticum groups,T wave of the L-Borneolum high-dose group,the Borneolum Syntheticum high-dose group,and Borneolum medium-dose group,QTC interval of the
L
-Borneolum medium and low-dose groups and the Borneolum high and medium-dose groups,and QRS duration of the
L
-Borneolum high and low-dose groups,the Borneolum high and low-dose groups,and the Borneolum Syntheticum groups were significantly reduced or shortened (
P
<
0.05,
P
<
0.01). After 3 d of treatment,the heart rate of the
L
-Borneolum groups,the Borneolum high and medium-dose groups,and the Borneolum Syntheticum medium-dose group,ST wave of the
L
-Borneolum group,the Borneolum high and medium-dose groups,and the Borneolum Syntheticum high-dose group,OTC interval,ORS duration,and Q wave of the
L
-Borneolum high-dose group,the Borneolum high-dose group,and the Borneolum Syntheticum high and medium-dose groups,QRS duration of the
L
-Borneolum medium-dose group,QTC interval of the Borneolum medium-dose group,and Q wave of the Borneolum Syntheticum low-dose group were all significantly reduced or shortened(
P
<
0.01). The mRNA expressions of IL-1
β
and IL-6 in the
L
-Borneolum medium and low-dose groups,the Borneolum medium and low-dose groups,and the Borneolum Syntheticum high and medium-dose groups were significantly down-regulated(
P
<
0.01),and LF/HF in the
L
-Borneolum high and medium-dose groups,the Borneolum high and medium-dose groups,and the Borneolum Syntheticum high and low-dose groups were significantly reduced (
P
<
0.05,
P
<
0.01). HRV in the
L
-Borneolum high-dose group,the Borneolum groups,and the Borneolum Syntheticum high and low-dose groups,and T wave in the Borneolum high and medium-dose groups and the Borneolum Syntheticum high-dose group were increased significantly. The protein expressions of HIF-1
α
,VEGFR1,and CD34 in the
L
-Borneolum medium and low-dose groups,the Borneolum low-dose group,and the Borneolum Syntheticum high-dose group were significantly up-regulated,as well as those of VEGFR1 and CD34 in the Borneolum medium-dose group (
P
<
0.05,
P
<
0.01).
Conclusion
2
The 3 kinds of Borneolum improves the heart rate,heart rate variability,and electrocardiogram of AMI model rats to different degrees,and may play a myocardial protective effect by anti-inflammation and promotion of angiogenesis. The combined effect suggests that L-Borneolum has the superior effect next to Borneolum,and Borneolum Syntheticum has the inferior effect.
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