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1.广州医科大学附属第三医院产前诊断科,广州 510150
2.广东省产科重大疾病重点实验室,广州 510150
3.广州医科大学附属第三医院妇产科,广州 510150
主治医师,硕士。研究方向:围产医学。E-mail:caodingya596@163.com
助理研究员,博士。研究方向:妊娠期疾病诊治。 E-mail:bingsong2012683034@gzhmu.edu.cn
收稿日期:2024-06-04,
修回日期:2024-08-09,
录用日期:2024-08-14,
纸质出版日期:2024-11-15
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曹定娅,武晓娟,付婷婷,等.大黄素对感染性早产大鼠的改善作用及机制[J].中国药房,2024,35(21):2629-2633.
CAO Dingya,WU Xiaojuan,FU Tingting,et al.Ameliorative effect and mechanism of emodin on infectious preterm rats[J].ZHONGGUO YAOFANG,2024,35(21):2629-2633.
曹定娅,武晓娟,付婷婷,等.大黄素对感染性早产大鼠的改善作用及机制[J].中国药房,2024,35(21):2629-2633. DOI: 10.6039/j.issn.1001-0408.2024.21.09.
CAO Dingya,WU Xiaojuan,FU Tingting,et al.Ameliorative effect and mechanism of emodin on infectious preterm rats[J].ZHONGGUO YAOFANG,2024,35(21):2629-2633. DOI: 10.6039/j.issn.1001-0408.2024.21.09.
目的
2
探究大黄素对感染性早产大鼠的改善作用及机制。
方法
2
构建感染性早产大鼠模型,将其分成模型组、大黄素组(60 mg/kg,灌胃)、核因子κB(NF-κB)抑制蛋白激酶(IKK)激活组(2 μg pcDNA3.1-IKK重组质粒,尾静脉注射)、大黄素+IKK激活组(灌胃60 mg/kg大黄素+尾静脉注射2 μg pcDNA3.1-IKK重组质粒),每组14只。另取14只受孕雌鼠作为对照组。各组大鼠给予相应药物干预7 d。检测大鼠子宫肌条肌张力和血清中炎症指标[白细胞介素1β(IL-1β)、IL-6、肿瘤坏死因子α(TNF-α)]和氧化应激指标[超氧化物歧化酶(SOD)、丙二醛(MDA)、过氧化氢酶(CAT)]水平;观察大鼠子宫组织病理学形态变化;检测大鼠子宫组织中NOD样受体蛋白3(NLRP3)、剪切型胱天蛋白酶1(cleaved-caspase-1)和IKK/NF-κB抑制蛋白(IκB)/NF-κB信号通路相关蛋白表达水平。
结果
2
与对照组相比,模型组大鼠子宫平滑肌出现了大量炎症细胞浸润,细胞分布不规则;子宫肌条肌张力和血清中IL-1β、IL-6、TNF-α、MDA水平以及子宫组织中NLRP3、cleaved-caspase-1、IKK、IκB、NF-κB p65蛋白表达水平均显著升高(
P
<0.05),血清中SOD、CAT水平均显著降低(
P
<0.05)。与模型组相比,大黄素组大鼠子宫平滑肌层炎症细胞浸润现象减轻,各定量指标均明显改善(
P
<0.05);IKK激活组大鼠子宫平滑肌层炎症细胞浸润现象加重,各定量指标均进一步恶化(
P
<0.05)。激活IKK可明显减弱大黄素对感染性早产大鼠上述指标的改善作用(
P
<0.05)。
结论
2
大黄素可能通过抑制IKK/IκB/NF-κB信号通路活性,减轻炎症反应和氧化应激,从而改善感染性早产大鼠子宫平滑肌收缩。
OBJECTIVE
2
To explore the ameliorative effect and mechanism of emodin on infectious preterm rats.
METHODS
2
The infectious preterm rat model was established and divided into model group, emodin group (60 mg/kg, i.g.), IKK activation group (2 μg pcDNA3.1-IKK recombinant plasmid via tail vein), emodin+IKK activation group (i.g. 60 mg/kg emodin+2 μg pcDNA3.1-IKK recombinant plasmid via tail vein), with 14 rats in each group. Another 14 pregnant female rats were set up as control group. Each group received corresponding intervention for 7 days. The muscle tension of the uterine muscle strip, and the indicator levels of serum inflammation [interleukin 1β (IL-1β), IL-6, tumor necrosis factor α(TNF-α)] and oxidative stress [superoxide dismutase (SOD), malondialdehyde (MDA), catalase (CAT)] were detected; the pathological morphological changes of uterine tissue in rats were observed; the protein expressions of NOD-like receptor protein 3 (NLRP3), cleaved-caspase-1 and IKK/IκB/NF-κB signaling pathway were detected.
RESULTS
2
Compared with control group, a large number of inflammatory cells infiltrated into the smooth muscle layer of uterus in model group with irregular cell distribution; the uterine muscle strip muscle tone, serum levels of IL-1β, IL-6, TNF-α and MDA, protein expressions of NLRP3, cleaved-caspase-1, IKK, I
κB and NF-κB p65 in uterine tissue were significantly increased in model group, and the serum levels of SOD and CAT were significantly decreased (
P
<0.05). Compared with the model group, the infiltration of inflammatory cells in the uterine smooth muscle layer was reduced in the emodin group, and all quantitative indexes were significantly improved (
P
<0.05); the infiltration of inflammatory cells in the uterine smooth muscle layer was increased in IKK activation group, and all quantitative indexes further deteriorated (
P
<0.05). Activation of IKK could significantly reduce the improvement effect of emodin on the above indexes in infectious preterm rats (
P
<0.05).
CONCLUSIONS
2
Emodin can relieve inflammation and oxidative stress in infectious preterm rats by inhibiting the IKK/IκB/NF-κB signaling pathway, thus improving uterine smooth muscle contraction.
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