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1.南京中医药大学第二附属医院/江苏省第二中医院,南京210017
2.南京中医药大学针灸推拿学院·养生康复学院,南京210023
3.南京中医药大学教育部针药结合重点实验室,南京210023
Received:15 September 2022,
Revised:18 October 2022,
Published:25 September 2023
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许骞,陆成轩,吴奂汐等.不同灸程45 ℃“足三里”温和灸对高脂血症大鼠腹主动脉炎性因子的影响[J].针刺研究,2023,48(09):923-932.
XU Qian,LU Cheng-xuan,WU Huan-xi,et al.Effect of mild moxibustion at 45 ℃ with different durations at “Zusanli” (ST36) on the inflammatory factors in the abdominal aorta of hyperlipidemia rats[J].Acupuncture Research,2023,48(09):923-932.
许骞,陆成轩,吴奂汐等.不同灸程45 ℃“足三里”温和灸对高脂血症大鼠腹主动脉炎性因子的影响[J].针刺研究,2023,48(09):923-932. DOI: 10.13702/j.1000-0607.20221039.
XU Qian,LU Cheng-xuan,WU Huan-xi,et al.Effect of mild moxibustion at 45 ℃ with different durations at “Zusanli” (ST36) on the inflammatory factors in the abdominal aorta of hyperlipidemia rats[J].Acupuncture Research,2023,48(09):923-932. DOI: 10.13702/j.1000-0607.20221039.
目的
2
探究45 ℃“足三里”温和灸对高脂血症大鼠腹主动脉慢性炎性反应的作用及不同灸程的效果。
方法
2
SD大鼠随机分为空白组(2周)、模型组(2周)、艾灸组(2周)和空白组(4周)、模型组(4周)、艾灸组(4周),每组6只,高脂饲养喂养8周制备高脂血症大鼠慢性炎性反应模型。艾灸组于大鼠双侧“足三里”进行45 ℃温和灸干预,10 min/次,1次/d,连续干预2周或4周。HE染色法观察各组大鼠腹主动脉形态变化,ELISA法检测各组大鼠血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)、氧化低密度脂蛋白(ox-LDL)、细胞间黏附分子-1(ICAM-1)、血管细胞黏附分子-1(VCAM-1)、白细胞介素-6(IL-6)、肿瘤坏死因子α(TNF-α)、内皮素-1(ET-1)含量及腹主动脉中一氧化氮(NO)、ox-LDL、ET-1含量;Western blot和实时荧光定量PCR法检测各组大鼠腹主动脉IL-6、TNF-α的蛋白和mRNA表达;免疫荧光检测各组大鼠腹主动脉IL-6的阳性表达。
结果
2
与空白组相比,模型组大鼠血清LDL、TC、TG、ox-LDL、VCAM-1、ICAM-1、IL-6、TNF-α、ET-1含量,腹主动脉ox-LDL、ET-1含量及腹主动脉IL-6、TNF-α蛋白及mRNA表达升高(
P
<
0.01,
P
<
0.05,
P
<
0.001),血清HDL含量,腹主动脉NO含量降低(
P
<
0.01,
P
<
0.05);模型组大鼠腹主动脉呈暗粉色,血管外膜、中膜、内膜层纹理粗糙且内皮层毛糙。与模型组(2周)相比,艾灸组(2周)大鼠血清LDL、ICAM-1、ET-1,腹主动脉ox-LDL含量降低(
P
<
0.05),血清IL-6、TNF-α含量,腹主动脉NO含量升高(
P
<
0.01,
P
<
0.05);艾灸组(2周)大鼠腹主动脉血管壁较模型组光滑,细胞核及周围组织结构也相对清晰。与模型组(4周)相比,艾灸组(4周)大鼠血清LDL、TC、TG、VCAM-1、ICAM-1、IL-6、TNF-α、ET-1、ox-LDL,腹主动脉ox-LDL、ET-1含量,腹主动脉IL-6、TNF-α蛋白及mRNA表达降低(
P
<
0.05,
P
<
0.01),血清HDL含量,腹主动脉NO含量升高(
P
<
0.05,
P
<
0.01);艾灸组(4周)大鼠腹主动脉血管壁较光滑,细胞核及周围组织结构相对清晰。与艾灸组(2周)相比,艾灸组(4周)大鼠血清HDL含量升高(
P
<
0.05),血清TNF-α含量,腹主动脉IL-6蛋白及阳性表达降低(
P
<
0.001,
P
<
0.05);艾灸组(4周)大鼠腹主动脉的血管壁更加光滑,细胞核及周围组织也更清晰。
结论
2
45 ℃温和灸“足三里”可以通过调节血脂、血管舒缩功能、黏附分子、炎性因子等改善高脂饮食诱导的血管内皮损伤和炎性反应,以4周艾灸的作用效果更佳。
Objective
2
To investigate the effects of mild moxibustion at 45°C on the chronic inflammatory response of the abdominal aorta in rats with hyperlipidemia and the effects of different moxibustion durations.
Methods
2
Thirty-six SD rats were randomly divided into the following groups: blank control group (2 weeks), model group (2 weeks), moxibustion group (2 weeks), blank group (4 weeks), model group (4 weeks), and moxibustion group (4 weeks). A model of hyperlipidemia with chronic inflammation was established through high-fat diet feeding for 8 weeks. Rats in the moxibustion groups received mild moxibustion treatment at bilateral “Zusanli”(ST36) at 45 °C, 10 min every time, once a day, for consecutive 2 or 4 weeks. The morphology of the abdominal aorta in each group was observed by using HE staining. Contents of serum total cholesterol (TC), triglycerides (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), oxidized low-density lipoprotein (ox-LDL), intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), interleukin 6 (IL-6), tumor necrosis factor alpha (TNF-α), endothelin-1 (ET-1) and the contents of nitric oxide (NO), ox-LDL, and ET-1 in the abdominal aorta were measured by using ELISA. Protein and mRNA expressions of IL-6 and TNF-α in the abdominal aorta of rats in each group were detected by using Western blot and real-time fluorescence quantitative PCR respectively. The positive expression of IL-6 in the abdominal aorta of rats was detected by Immunofluorescence.
Results
2
Compared to the blank control group, rats in the model group had increased contents of LDL, TC, TG, ox-LDL, VCAM-1, ICAM-1, IL-6, TNF-α, and ET-1 in the serum, increased contents of ox-LDL and ET-1 in the abdominal aorta, increased protein and mRNA expressions of IL-6 and TNF-α in the abdominal aorta(
P
<
0.01,
P
<
0.05,
P
<
0.001), with decreased HDL content in the serum, decreased NO content in the abdominal aorta (
P
<
0.01,
P
<
0.05), as well as dark pink abdominal aorta, rough textures in the adventitia, media, and intima, and rough endothelial layer. Compared to the model group(2 weeks), LDL, ICAM-1, ET-1 contents in the serum, ox-LDL content in the abdominal aorta were decreased(
P
<
0.05), while serum IL-6 and TNF-α contents, and NO content in the abdominal aorta were significantly increased(
P
<
0.01,
P
<
0.05), with smoother vascular walls, and relatively clear nucleus and surrounding tissue structures of abdominal aorta in the moxibustion group(2 weeks). Compared to the model group(4 weeks), contents of LDL, TC, TG, VCAM-1, ICAM-1, IL-6, TNF-α, ox-LDL, and ET-1 in the serum, ox-LDL and ET-1 contents in abdominal aorta, protein and mRNA expressions of IL-6 and TNF-α in the abdominal aorta were significantly decreased(
P
<
0.05,
P
<
0.01), while HDL content in the serum and NO content in the abdominal aorta were significantly increased(
P
<
0.05,
P
<
0.01), with smoother vascular walls, and relatively clear nucleus and surrounding tissue structures of abdominal aorta in the moxibustion group(4 weeks). In addition, content of HDL in the serum were significantly increased(
P
<
0.05), while TNF-α content in the serum, protein expression of IL-6 in the abdominal aorta were significantly decreased (
P
<
0.001,
P
<
0.05), with smoother vascular walls, and clearer nucleus and surrounding tissue structures of abdominal aorta in the moxibustion group(4 weeks), in comparison with the moxibustion group(2 weeks).
Conclusion
2
Mild moxibustion of 45 °C at ST36 can improve vascular endothelial damage and inflammatory response induced by high-fat diet by regulating serum lipids, vascular tone, adhesion molecules, and inflammatory factors, of which the effect of moxibustion intervention for 4 weeks is more significant.
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