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1.辽宁中医药大学第一临床学院(辽宁 沈阳 110847)
2.遵义医科大学药学院(贵州 遵义 563000)
3.辽宁中医药大学中医学院(辽宁 沈阳 110847)
都丹阳,女,硕士研究生,主要从事心脑血管疾病的基础及临床研究
李海波,教授,博士研究生导师; E-mail:735658485@qq.com
收稿日期:2025-03-03,
纸质出版日期:2025-09-10
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都丹阳,侯芳琴,李海波.四逆散对缺血性卒中后抑郁小鼠抑郁样行为的作用及其对SIRT3/SOD2通路的影响[J].上海中医药杂志,2025,59(9):15-22.
DU Danyang,HOU Fangqin,LI Haibo.Effects of Sini San on depressive‑like behaviors in mice with post‑ischemic stroke depression and its influence on SIRT3/SOD2 signaling pathway[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(9):15-22.
都丹阳,侯芳琴,李海波.四逆散对缺血性卒中后抑郁小鼠抑郁样行为的作用及其对SIRT3/SOD2通路的影响[J].上海中医药杂志,2025,59(9):15-22. DOI: 10.16305/j.1007-1334.2025.z20250303004.
DU Danyang,HOU Fangqin,LI Haibo.Effects of Sini San on depressive‑like behaviors in mice with post‑ischemic stroke depression and its influence on SIRT3/SOD2 signaling pathway[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(9):15-22. DOI: 10.16305/j.1007-1334.2025.z20250303004.
目的
2
研究四逆散对缺血性卒中后抑郁(PSD)小鼠抑郁样行为的作用及可能的机制。
方法
2
通过大脑中动脉栓塞(MCAO)联合慢性不可预知温和应激(CUMS)构建PSD小鼠模型。完成建模后,将75只符合标准的雄性C57BL/6J小鼠随机分配至PSD相关组:PSD组、PSD+四逆散低剂量组、PSD+四逆散中剂量组、PSD+四逆散高剂量组、PSD+氟西汀组,每组15只。另选取30只仅接受麻醉及血管分离操作(未行MCAO和CUMS)的雄性C57BL/6J小鼠,随机分为假手术组和假手术+四逆散高剂量组,每组15只。给药组小鼠分别灌胃氟西汀或四逆散(4.9 g/kg、9.8 g/kg和19.6 g/kg),假手术组和假手术+四逆散高剂量组分别灌胃0.9%氯化钠溶液和四逆散(19.6 g/kg),连续28 d。评估小鼠抑郁样行为,用酶联免疫吸附分析(ELISA)法检测大脑内侧前额叶皮质(mPFC)中5-羟色胺(5-HT)、去甲肾上腺素(NE)、活性氧(ROS)、丙二醛(MDA)和超氧化物歧化酶(SOD)水平,基于酶偶联比色法测定腺嘌呤核苷三磷酸(ATP)活性,通过分光光度法确定烟酰胺腺嘌呤二核苷酸磷酸(NADP
+
)与还原型烟酰胺腺嘌呤二核苷酸磷酸(NADPH)比值,观察线粒体超微结构,Western blot法检测沉默信息调控因子3(SIRT3)、超氧化物歧化酶2(SOD2)和凋亡相关蛋白表达。
结果
2
PSD组小鼠体质量降低,蔗糖偏好率降低,悬尾不动时间延长,显示抑郁样行为。四逆散干预后,小鼠体质量增加,蔗糖偏好率升高,悬尾不动时间缩短,抑郁样行为改善。PSD小鼠mPFC中ROS和MDA水平增加,SOD活力、ATP和NADP
+
/NADPH比值降低,四逆散能逆转这些变化。PSD小鼠mPFC中SIRT3和SOD2蛋白表达减少,Bcl-2相关X蛋白/ B淋巴细胞瘤-2(Bax/Bcl-2)比值和剪切型胱天蛋白酶-3(cleaved Caspase-3)蛋白水平增加,四逆散能逆转这些蛋白变化,表明四逆散可能通过调节线粒体功能和抗氧化途径改善PSD小鼠的抑郁样行为。
结论
2
四逆散具有明显改善PSD小鼠抑郁样行为的作用,其机制与调控SIRT3/SOD2信号通路抑制线粒体氧化应激,进而抑制细胞凋亡有关。
Objective
2
To investigate the effect of Sini San (SNS) on depressive-like behaviors and its potential mechanism of action in mice with post-stroke depression (PSD) following ischemic stroke.
Methods
2
A PSD mouse model was established by combining middle cerebral artery occlusion (MCAO) with chronic unpredictable mild stress (CUMS). After successful modeling, 75 eligible male C57BL/6J mice were randomly assigned to PSD-related groups: PSD group, PSD+SNS low-dose group (4.9 g/kg), PSD+SNS medium-dose group (9.8 g/kg), PSD+SNS high-dose group (19.6 g/kg), and PSD+Fluoxetine group (
n
=15 per group). An additional 30 male C57BL/6J mice undergoing anesthesia and vascular dissection only (without MCAO or CUMS) were randomly divided into a sham surgery group and a sham surgery+SNS high-dose (19.6 g/kg) group (
n
=15 per group). Treatment groups received daily gavage of fluoxetine or SNS (4.9, 9.8, or 19.6 g/kg) for 28 consecutive days. The sham surgery group and sham surgery+SNS high-dose group received 0.9% saline and SNS (19.6 g/kg) via gavage, respectively, for 28 days. Depressive-like behaviors were assessed. Levels of serotonin (5-HT), norepinephrine (NE), reactive oxygen species (ROS), malondialdehyde (MDA), and superoxide dismutase (SOD) in the medial prefrontal cortex (mPFC) were measured using enzyme-linked immunosorbent assay (ELISA). Adenosine triphosphate (ATP) activity was determined using an enzyme-coupled colorimetric assay. The ratio of nicotinamide adenine dinucleotide phosphate (NADP
+
) to reduced NADP
+
(NADPH) was measured spectrophotometrically. Mitochondrial ultrastructure was observed. Protein expression of sirtuin 3 (SIRT3), superoxide dismutase 2 (SOD2), and apoptosis-related proteins (Bax, Bcl-2, cleaved Caspase-3) was detected by Western blot analysis.
Results
2
Mice in the PSD group exhibited decreased body weight, reduced sucrose preference rate, and prolonged immobility time in the tail suspension test, indicating depressive-like behavio
rs. SNS intervention increased body weight, elevated sucrose preference rate, shortened tail suspension immobility time, and ameliorated these depressive-like behaviors. PSD mice showed increased ROS and MDA levels, and decreased SOD activity, ATP levels, and NADP
+
/NADPH ratio in the mPFC; SNS reversed these changes. Reduced protein expression of SIRT3 and SOD2, increased Bax/Bcl-2 ratio and cleaved Caspase-3 levels were observed in the mPFC of PSD mice; SNS reversed these protein alterations. This suggests SNS may improve depressive-like behaviors in PSD mice by regulating mitochondrial function and antioxidant pathways.
Conclusions
2
SNS exerts significant antidepressant effects on depressive-like behaviors in PSD mice. Its mechanism is associated with the modulation of the SIRT3/SOD2 signaling pathway, suppressing mitochondrial oxidative stress and thereby inhibiting neuronal apoptosis.
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