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阿芬太尼调节 SphK1/S1P 信号通路对急性心肌梗死大鼠心肌纤
维化的影响
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肖锦亮 ,邹 雪,但家朋 [荆州市中心医院(长江大学附属荆州医院)麻醉科,湖北 荆州 434000]
中图分类号 R965;R542.2+2 文献标志码 A 文章编号 1001-0408(2024)08-0955-06
DOI 10.6039/j.issn.1001-0408.2024.08.10
摘 要 目的 探究阿芬太尼(ALF)调节鞘氨醇激酶1(SphK1)/1-磷酸鞘氨醇(S1P)信号通路对急性心肌梗死(AMI)大鼠心肌纤
维化的影响。方法 取雄性 SD 大鼠,采用左冠状动脉前降支结扎法构建 AMI 模型,并将造模成功的大鼠随机分为 AMI 模型组
(Model组)和低剂量ALF组(ALF-L组,予0.25 mg/kg ALF)、高剂量ALF组(ALF-H组,予0.5 mg/kg ALF)、高剂量ALF+SphK1激
活剂组(ALF-H+K6PC-5组,予0.5 mg/kg ALF+1 μg/g K6PC-5),同时设置仅进行开/关胸操作而不作左冠状动脉前降支结扎的假
手术组(Sham组),每组15只。各药物组大鼠腹腔注射相应药液,每天1次,连续4周。末次给药12 h后,检测各组大鼠的心功能
指标[左室收缩压(LVSP)、左室射血分数(LVEF)、左室收缩期内径(LVSD)、左室短轴缩短率(LVFS)],观察其心肌梗死情况、心肌
组织病理改变和纤维化程度,检测其血清脑钠肽(BNP)、心肌肌钙蛋白Ⅰ(cTnⅠ)水平以及心肌组织中Ⅰ型胶原蛋白(collagen
Ⅰ)、collagen Ⅲ、基质金属蛋白酶2(MMP-2)、SphK1、S1P蛋白的表达水平。结果 与Sham组比较,Model组大鼠心肌组织细胞排
列紊乱,可见大量炎症细胞浸润;LVSP、LVFS、LVEF均显著降低(P<0.05);LVSD,心肌梗死面积、心肌组织胶原容积分数,血清
BNP、cTnⅠ水平,心肌组织中 collagen Ⅰ、collagen Ⅲ、MMP-2、SphK1、S1P 蛋白的表达水平均显著升高或增大(P<0.05)。与
Model组比较,ALF各剂量组大鼠心肌组织病理改变和纤维化程度均有所改善或减轻,ALF-H组大鼠各定量指标均显著改善且显
著优于 ALF-L 组(P<0.05);K6PC-5 可显著逆转高剂量 ALF 对大鼠上述各定量指标的改善作用(P<0.05)。结论 ALF 可减轻
AMI大鼠心肌纤维化,改善其心功能,该作用可能与抑制SphK1/S1P信号通路有关。
关键词 阿芬太尼;急性心肌梗死;心肌纤维化;SphK1/S1P信号通路
Effects of alfentanil on myocardial fibrosis in rats with acute myocardial infarction by regulating the
SphK1/S1P signaling pathway
XIAO Jinliang,ZOU Xue,DAN Jiapeng [Dept. of Anesthesiology, Jingzhou Central Hospital (Jingzhou Hospital
Affiliated to Yangtze University), Hubei Jingzhou 434000, China]
ABSTRACT OBJECTIVE To explore the effects of alfentanil (ALF) on myocardial fibrosis in rats with acute myocardial
infarction (AMI) by regulating sphingosine kinase 1 (SphK1)/sphingosine 1-phosphate (S1P) signaling pathway. METHODS Male
SD rats were collected to construct AMI model by the ligation of anterior descending branch of left coronary artery. The
successfully modeled rats were randomly divided into AMI model group (Model group), ALF low-dose group (ALF-L group, 0.25
mg/kg ALF), ALF high-dose group (ALF-H group, 0.5 mg/kg ALF), high dose of ALF+SphK1 activator group (ALF-H+K6PC-5
group, 0.5 mg/kg ALF+1 μg/g K6PC-5). At the same time, a sham operation group (Sham group) was set up to perform only
chest opening/closing operations without ligating the anterior descending branch of left coronary artery, with 15 rats in each group.
Rats in each drug group were intraperitoneally injected with the corresponding drug solution, once a day, for 4 consecutive weeks.
Twelve hours after the last medication, cardiac function indicators [left ventricular systolic pressure (LVSP), left ventricular
ejection fraction (LVEF), left ventricular systolic diameter (LVSD), left ventricular fractional shortening (LVFS)] of rats were
detected in each group; the condition of myocardial infarction, pathological changes in myocardial tissue, and degree of fibrosis
were observed; serum levels of brain natriuretic peptide (BNP) and cardiac troponin Ⅰ (cTnⅠ) in rats were detected. The protein
expressions of collagen Ⅰ , collagen Ⅲ , matrix
Δ 基金项目 荆 州 市 2020 年 度 医 疗 卫 生 科 技 计 划 项 目(No.
metalloproteinase-2 (MMP-2), SphK1 and S1P were also
2020HC05) detected in the myocardial tissue of rats. RESULTS Compared
*第一作者 主治医师。研究方向:心脏大血管麻醉。E-mail:
ijpr9v@163.com with the Sham group, the arrangement of myocardial cells in
# 通信作者 副主任医师,硕士。研究方向:心脏大血管手术及危 the Model group was disordered, with a large number of
重症患者麻醉管理。E-mail:cunganiv51@163.com inflammatory cells infiltrating. The levels of LVSP, LVFS and
中国药房 2024年第35卷第8期 China Pharmacy 2024 Vol. 35 No. 8 · 955 ·