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1.上海中医药大学中医学院(上海 201203)
2.上海中医药大学中西医结合学院(上海 201203)
Received:02 December 2024,
Published:10 August 2025
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王翊瑄,姜丽,宁可,等.基于AMPK‑NF‑κB通路探讨三七总皂苷调控心肌缺血再灌注损伤炎症反应的机制[J].上海中医药杂志,2025,59(8):79-87.
WANG Yixuan,JIANG Li,NING Ke,et al.Exploration on mechanism of panax notoginseng saponins in regulating inflammatory response in myocardial ischemia‑reperfusion injury based on AMPK‑NF‑κB pathway[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(8):79-87.
王翊瑄,姜丽,宁可,等.基于AMPK‑NF‑κB通路探讨三七总皂苷调控心肌缺血再灌注损伤炎症反应的机制[J].上海中医药杂志,2025,59(8):79-87. DOI: 10.16305/j.1007-1334.2025.z20241202006.
WANG Yixuan,JIANG Li,NING Ke,et al.Exploration on mechanism of panax notoginseng saponins in regulating inflammatory response in myocardial ischemia‑reperfusion injury based on AMPK‑NF‑κB pathway[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(8):79-87. DOI: 10.16305/j.1007-1334.2025.z20241202006.
目的
2
探讨三七总皂苷(PNS)通过腺苷酸活化蛋白激酶(AMPK)-核因子κB(NF-κB)通路调控大鼠心肌缺血再灌注损伤(MIRI)炎症反应的作用机制。
方法
2
82只雄性SD大鼠随机分成:假手术(Sham)组(
n
=11)、模型(I/R)组(
n
=15)、模型+PNS(I/R+PNS)组(
n
=12)、模型+AMPK激活剂(I/R+AICAR)组(
n
=15)、模型+PNS+AMPK抑制剂(I/R+PNS+CC)组(
n
=14)、模型+NF-κB抑制剂(I/R+BAY)组(
n
=15)。通过结扎冠状动脉左前降支40 min、再灌注60 min制备大鼠心肌缺血再灌注(I/R)模型。Sham组与I/R组于结扎前40 min、30 min分别腹腔注射0.9%的氯化钠溶液;I/R+PNS组、I/R+AICAR组、I/R+BAY组于结扎前40 min腹腔注射0.9%的氯化钠溶液,结扎前30 min分别腹腔注射50 mg/kg PNS、10 mg/kg AICAR、10 mg/kg BAY-117082;I/R+PNS+CC组于结扎前40 min颈静脉注射0.25 mg/kg Compound C,结扎前30 min腹腔注射50 mg/kg PNS。检测血流动力学指标、心肌组织病理及髓过氧化物酶(MPO)活性;实时荧光定量逆转录聚合酶链式反应(RT-qPCR)法和酶联免疫吸附试验(ELISA)法检测心肌组织肿瘤坏死因子-α(TNF-α)和单核细胞趋化蛋白-1(MCP-1)蛋白与mRNA表达;Western blot法测定心肌组织磷酸化AMPK(p-AMPK)、胞浆磷酸化NF-κB抑制蛋白激酶α/β(p-IKKα/β)、磷酸化NF-κB抑制蛋白α(p-IκBα
)及细胞核内磷酸化NF-κB(p-NF-κB)蛋白表达;免疫荧光染色法观察p-NF-κB入核水平。
结果
2
与Sham组相比,I/R组大鼠心脏收缩与舒张功能降低(
P
<
0.05),心肌组织病理损伤加重,MPO活性、炎症因子(TNF-α和MCP-1)表达量升高(
P
<
0.05),p‑AMPK表达量降低(
P
<
0.05),NF-κB通路相关蛋白(p-IKKα/β、p-IκBα及p-NF-κB)表达量升高(
P
<
0.05)。与I/R组相比,I/R+PNS组心功能改善(
P
<
0.05),心肌组织病理损伤减轻,MPO活性及炎症因子表达量降低(
P
<
0.05),p-AMPK表达量升高(
P
<
0.05),NF‑κB通路蛋白表达量减少(
P
<
0.05)。与I/R+PNS组相比,I/R+PNS+CC组心功能下降(
P
<
0.05),病理损伤加重,MPO活性、炎症因子及NF-κB通路蛋白表达量升高(
P
<
0.05),p‑AMPK表达量降低(
P
<
0.05)。
结论
2
PNS可通过抑制炎症反应发挥抗MIRI的作用,其机制可能与调控AMPK-NF-κB信号通路有关。
Objective
2
To investigate the mechanism of panax notoginseng saponins (PNS) in regulating inflammatory response in myocardial ischemia-reperfusion injury (MIRI) via AMP-activated protein kinase (AMPK)-nuclear factor-κB (NF-κB) pathway.
Methods
2
Eighty-two male SD rats were randomly divided into Sham group (
n
=11), model (I/R) group (
n
=15), model+PNS (I/R+PNS) group (
n
=12), model+AMPK activator (I/R+AICAR) group (
n
=15), model+PNS+AMPK inhibitor (I/R+PNS+CC) group (
n
=14), and model+NF-κB inhibitor (I/R+BAY) group (
n
=15). A rat myocardial ischemia-reperfusion (I/R) model was created by occluding the left anterior descending coronary artery for 40 min, followed by a 60-min reperfusion period. For the Sham and I/R groups, 0.9% sodium chloride solution was administered via intraperitoneal injection (ip) at 40 and 30 min before ligation. For the I/R+PNS, I/R+AICAR, and I/R+BAY groups, 0.9% sodium chloride solution was intraperitoneally injected at 40 min before ligation, followed by ip administration of 50 mg/kg PNS, 10 mg/kg AICAR, and 10 mg/kg BAY-117082 at 30
min before ligation, respectively. The I/R+PNS+CC group received 0.25 mg/kg Compound C via jugular vein injection at 40 min before ligation, followed by ip injection of 50 mg/kg PNS at 30 min before ligation. Hemodynamic parameters, myocardial histopathological changes, and myeloperoxidase (MPO) activity were assessed. The protein and mRNA expressions of tumor necrosis factor-α (TNF-α) and monocyte chemoattractant protein-1 (MCP-1) in myocardial tissue were measured using real-time quantitative reverse transcription polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbent assay (ELISA). Western blot was performed to detect the protein expressions of phosphorylated AMPK (p-AMPK), cytoplasmic phosphorylated NF‑κB inhibitor kinase α/β (p-IKKα/β), phosphorylated NF-κB inhibitor α (p‑IκBα), and nuclear phosphorylated NF-κB (p-NF-κB) in myocardial tissue. Immunofluorescence staining was used to observe the nuclear translocation of p-NF-κB.
Results
2
Compared with the Sham group, the I/R group showed decreased cardiac systolic and diastolic functions (
P
<
0.05), aggravated myocardial pathological damage, increased MPO activity and expressions of inflammatory factors (TNF-α and MCP-1) (
P
<
0.05), reduced p-AMPK expression (
P
<
0.05), and elevated expressions of NF-κB pathway-related proteins (p-IKKα/β, p-IκBα, and p-NF-κB) (
P
<
0.05). Compare with the I/R group, the I/R+PNS group exhibited improved cardiac function (
P
<
0.05), alleviated myocardial pathological damage, decreased MPO activity and inflammatory factor expressions (
P
<
0.05), increased p-AMPK expression (
P
<
0.05), and reduced expressions of NF-κB pathway proteins (
P
<
0.05). Compared with the I/R+PNS group, the I/R+PNS+CC group displayed declined cardiac function (
P
<
0.05), exacerbated pathological damage, increased MPO activity, inflammatory factors, and NF
-κB pathway protein expressions (
P
<
0.05), as well as reduced p-AMPK expression (
P
<
0.05).
Conclusion
2
PNS can exert an anti-MIRI effect by inhibiting the inflammatory response, and its mechanism may be related to the regulation of the AMPK-NF-κB signaling pathway.
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