betway必威登陆网址 (betway.com )学报››2024,Vol. 45››Issue (1): 1-6.DOI:10.3969/j.issn.2097-0005.2024.01.001
• 基础研究 •
收稿日期:
2023-12-14出版日期:
2024-01-25发布日期:
2024-04-08通讯作者:
金松南基金资助:
Received:
2023-12-14Online:
2024-01-25Published:
2024-04-08Contact:
Songnan JIN摘要:
目的探讨大黄素甲醚对异丙肾上腺素(isoproterenol, ISO)致心肌损伤的保护作用及相关机制。方法通过皮下注射给予ISO,诱导大鼠心肌损伤模型,检测心脏质量指数,酶标仪检测大鼠血清中肌酸激酶同工酶(creatine kinase-MB, CK-MB)和乳酸脱氢酶(lactate dehydrogenase, LDH)水平,超声心动仪评估心功能。在体外培养的H9c2细胞中,用ISO构建心肌细胞损伤模型, MTT法检测细胞存活率,ELISA法检测细胞培养液中LDH水平,蛋白印迹法检测心肌细胞中相关蛋白表达。结果在ISO诱导的心肌损伤大鼠模型中,心脏质量指数增加,血清CK-MB和LDH水平升高,心功能指标即射血分数(ejection fraction, EF)和缩短分数(fractional shortening, FS)降低,而分别用大黄素甲醚和普萘洛尔干预,均减弱上述指标变化。在ISO诱导的H9c2细胞损伤模型中,大黄素甲醚对ISO致细胞存活率下降、LDH水平升高、TLR4/MyD88/NF-κB和TNF-α蛋白表达水平增加均有显著的抑制作用。结论大黄素甲醚对ISO 致心肌损伤具有保护作用,其机制与抑制TLR4/MyD88/NF-κB信号通路有关。
陈琪琪, 金松南. 大黄素甲醚对异丙肾上腺素诱导心肌损伤的保护作用[J]. betway必威登陆网址 (betway.com )学报, 2024, 45(1): 1-6.
Qiqi CHEN, Songnan JIN. Protective effects of physcion on isoproterenol-induced myocardial injury[J]. Journal of ShanDong First Medical University&ShanDong Academy of Medical Sciences, 2024, 45(1): 1-6.
组别 | HW/BW(mg/g) | LVW/BW (mg/g) | CK-MB (mg/L) | 血清LDH (U/L) |
---|---|---|---|---|
对照组 | 1.81 ± 0.13 | 2.85 ± 0.11 | 0.68 ± 0.19 | 281.95 ± 41.53 |
ISO组 | 2.41 ± 0.34*** | 3.42 ± 0.17** | 1.33 ± 0.09*** | 1030.17 ± 10.55*** |
大黄素甲醚低剂量组 | 2.06 ± 0.09# | 3.17 ± 0.16# | 1.14 ± 0.17# | 707.69 ± 8.82### |
大黄素甲醚高剂量组 | 2.03 ± 0.08## | 3.02 ± 0.13# | 1.02 ± 0.17## | 559.84 ± 36.28### |
普萘洛尔组 | 1.97 ± 0.17## | 2.97 ± 0.21# | 0.81 ± 0.25## | 446.11 ± 43.54### |
F | 11.052 | 8.423 | 9.774 | 237.246 |
P | < 0.001 | < 0.001 | < 0.001 | < 0.001 |
表1大黄素甲醚对ISO致大鼠心肌肥厚的影响(n = 6)
组别 | HW/BW(mg/g) | LVW/BW (mg/g) | CK-MB (mg/L) | 血清LDH (U/L) |
---|---|---|---|---|
对照组 | 1.81 ± 0.13 | 2.85 ± 0.11 | 0.68 ± 0.19 | 281.95 ± 41.53 |
ISO组 | 2.41 ± 0.34*** | 3.42 ± 0.17** | 1.33 ± 0.09*** | 1030.17 ± 10.55*** |
大黄素甲醚低剂量组 | 2.06 ± 0.09# | 3.17 ± 0.16# | 1.14 ± 0.17# | 707.69 ± 8.82### |
大黄素甲醚高剂量组 | 2.03 ± 0.08## | 3.02 ± 0.13# | 1.02 ± 0.17## | 559.84 ± 36.28### |
普萘洛尔组 | 1.97 ± 0.17## | 2.97 ± 0.21# | 0.81 ± 0.25## | 446.11 ± 43.54### |
F | 11.052 | 8.423 | 9.774 | 237.246 |
P | < 0.001 | < 0.001 | < 0.001 | < 0.001 |
组别 | EF/% | FS/% |
---|---|---|
对照组 | 85.31 ± 6.46 | 55.41 ± 7.23 |
ISO组 | 64.81 ± 9.91** | 36.91 ± 7.43** |
大黄素甲醚低剂量组 | 78.19 ± 3.48# | 48.11 ± 3.21## |
大黄素甲醚高剂量组 | 80.12 ± 8.84# | 50.93 ± 9.91## |
普萘洛尔组 | 84.08 ± 7.51## | 53.75 ± 10.74### |
F | 7.003 | 7.157 |
P | < 0.001 | < 0.001 |
表2大黄素甲醚对ISO致大鼠心功能紊乱的影响(n = 6)
组别 | EF/% | FS/% |
---|---|---|
对照组 | 85.31 ± 6.46 | 55.41 ± 7.23 |
ISO组 | 64.81 ± 9.91** | 36.91 ± 7.43** |
大黄素甲醚低剂量组 | 78.19 ± 3.48# | 48.11 ± 3.21## |
大黄素甲醚高剂量组 | 80.12 ± 8.84# | 50.93 ± 9.91## |
普萘洛尔组 | 84.08 ± 7.51## | 53.75 ± 10.74### |
F | 7.003 | 7.157 |
P | < 0.001 | < 0.001 |
ISO/(μmol/L) | 细胞存活率/% | 大黄素甲醚/ (nmol/L) |
细胞存活率/% |
---|---|---|---|
0 | 100.00 ± 3.12 | 0 | 100.00 ± 3.66 |
200 | 94.11 ± 4.97 | 10 | 99.32 ± 3.20 |
250 | 92.17 ± 7.64 | 30 | 100.57 ± 8.61 |
300 | 78.31 ± 10.30* | 60 | 95.79 ± 6.16 |
350 | 52.99 ± 13.84*** | 100 | 95.56 ± 9.69 |
400 | 33.14 ± 12.78*** | 300 | 94.77 ± 7.52 |
F | 68.057 | 0.707 | |
P | < 0.001 | 0.623 |
表3ISO、大黄素甲醚对H9c2细胞存活率的影响(n = 6)
ISO/(μmol/L) | 细胞存活率/% | 大黄素甲醚/ (nmol/L) |
细胞存活率/% |
---|---|---|---|
0 | 100.00 ± 3.12 | 0 | 100.00 ± 3.66 |
200 | 94.11 ± 4.97 | 10 | 99.32 ± 3.20 |
250 | 92.17 ± 7.64 | 30 | 100.57 ± 8.61 |
300 | 78.31 ± 10.30* | 60 | 95.79 ± 6.16 |
350 | 52.99 ± 13.84*** | 100 | 95.56 ± 9.69 |
400 | 33.14 ± 12.78*** | 300 | 94.77 ± 7.52 |
F | 68.057 | 0.707 | |
P | < 0.001 | 0.623 |
组别 | 细胞存活率/% | 细胞培养液LDH (U/L) |
---|---|---|
对照组 | 100.00 ± 9.53 | 214.57 ± 5.76 |
ISO (350 μmol/L) 组 | 50.24 ± 2.57*** | 659.87 ± 15.12*** |
大黄素甲醚(10 nmol/L)组 | 78.24 ± 3.78## | 523.68 ± 41.25## |
大黄素甲醚(30 nmol/L)组 | 81.62 ± 3.53### | 444.43 ± 37.27### |
大黄素甲醚(60 nmol/L)组 | 89.83 ± 4.61### | 329.26 ± 34.8### |
TAK-242 (25 μmol/L) 组 | 91.33 ± 5.67### | 261.18 ± 33.52### |
F | 60.825 | 90.687 |
P | < 0.001 | < 0.001 |
表4大黄素甲醚对ISO致H9c2细胞损伤的影响(n = 6)
组别 | 细胞存活率/% | 细胞培养液LDH (U/L) |
---|---|---|
对照组 | 100.00 ± 9.53 | 214.57 ± 5.76 |
ISO (350 μmol/L) 组 | 50.24 ± 2.57*** | 659.87 ± 15.12*** |
大黄素甲醚(10 nmol/L)组 | 78.24 ± 3.78## | 523.68 ± 41.25## |
大黄素甲醚(30 nmol/L)组 | 81.62 ± 3.53### | 444.43 ± 37.27### |
大黄素甲醚(60 nmol/L)组 | 89.83 ± 4.61### | 329.26 ± 34.8### |
TAK-242 (25 μmol/L) 组 | 91.33 ± 5.67### | 261.18 ± 33.52### |
F | 60.825 | 90.687 |
P | < 0.001 | < 0.001 |
图 1大黄素甲醚对ISO致H9c2细胞损伤时TLR4/MyD88/NF-κB信号通路蛋白表达的影响A、B、C、D、E分别为TLR4、MyD88、胞质内NF-κB、核内NF-κB和TNF-α的蛋白印迹及结果分析。与对照组比较, **P < 0. 01, ***P < 0. 001;与ISO组比较, #P < 0. 05, ##P < 0. 01, ###P < 0. 001。
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