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1.贵阳市妇幼保健院/贵阳市儿童医院药学部,贵阳 550003
2.贵州医科大学天然药物资源优效利用重点实验室,贵阳 561113
3.贵州医科大学药学院,贵阳 561113
主管药师。研究方向:中医药防治糖尿病。E-mail:1329070275@qq.com
教授,博士生导师,博士。研究方向:心血管药物药理活性、中药与民族药。E-mail:shengxiangchun@126.com
收稿日期:2023-08-07,
修回日期:2023-12-24,
录用日期:2023-12-25,
纸质出版日期:2024-02-15
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杨红,任鹏艳,陈永鑫,等.1,8-桉叶油素对2型糖尿病胰岛β细胞铁死亡的干预作用及机制[J].中国药房,2024,35(03):290-295.
YANG Hong,REN Pengyan,CHEN Yongxin,et al.Interventional effect and mechanism of 1,8-cineoleon pancreatic β cell ferroptosis induced by type 2 diabetes[J].ZHONGGUO YAOFANG,2024,35(03):290-295.
杨红,任鹏艳,陈永鑫,等.1,8-桉叶油素对2型糖尿病胰岛β细胞铁死亡的干预作用及机制[J].中国药房,2024,35(03):290-295. DOI: 10.6039/j.issn.1001-0408.2024.03.05.
YANG Hong,REN Pengyan,CHEN Yongxin,et al.Interventional effect and mechanism of 1,8-cineoleon pancreatic β cell ferroptosis induced by type 2 diabetes[J].ZHONGGUO YAOFANG,2024,35(03):290-295. DOI: 10.6039/j.issn.1001-0408.2024.03.05.
目的
2
研究1,8-桉叶油素对2型糖尿病胰岛β细胞铁死亡的干预作用及机制。
方法
2
使用高糖作用于小鼠胰岛β细胞以建立细胞铁死亡模型,考察低、高剂量1,8-桉叶油素(0.25、0.5 μmol/L)对胰岛β细胞中Fe
2+
水平的影响,并考察1,8-桉叶油素(0.5 μmol/L)联合铁死亡诱导剂Erastin(20 μmol/L)和抑制剂Ferrostatin-1(20 μmol/L)后对胰岛β细胞中谷胱甘肽过氧化物酶4(GPX4)、环氧合酶2(COX2)蛋白表达的影响。采用高脂高糖饲料饲养联合腹腔注射链脲佐菌素构建2型糖尿病小鼠模型,考察低、高剂量1,8-桉叶油素(50、200 mg/kg)对模型小鼠胰腺组织病理形态、铁含量以及GPX4、COX2蛋白表达的影响。
结果
2
细胞实验结果显示,与模型组比较,经1,8-桉叶油素干预后,胰岛β细胞中Fe
2+
水平显著降低(
P
<0.05);GP
X4蛋白表达水平显著升高(
P
<0.05),COX2蛋白表达水平显著降低(
P
<0.05),且联合Ferrostatin-1后上述两种蛋白表达趋势相同,而联合Erastin后差异无统计学意义。动物实验结果显示,与模型组比较,经1,8-桉叶油素干预后,小鼠胰岛结构恢复完整,形态有所改善;胰腺组织中铁含量和COX2蛋白表达水平均显著降低(
P
<0.05),GPX4蛋白表达水平显著升高(
P
<0.05)。
结论
2
1,8-桉叶油素对2型糖尿病胰岛β细胞损伤具有明显的改善作用,其作用机制可能与降低细胞内铁沉积以及调控铁死亡相关蛋白有关。
OBJECTIVE
2
To study the interventional effect and mechanism of 1,8-cineole on pancreatic β cell ferroptosis induced by type 2 diabetes.
METHODS
2
In vitro
ferroptosis model was established in pancreatic β cells of mice by using high glucose. The effects of low-dose and high-dose 1,8-cineole (0.25, 0.5 μmol/L) on the level of Fe
2+
in pancreatic β cells were investigated. The effects of 1,8-cineole (0.5 μmol/L) combined with ferroptosis inducer Erastin (20 μmol/L) and ferroptosis inhibitor Ferrostatin-1 (20 μmol/L) on the protein expressions of glutathione peroxidase-4 (GPX4) and cyclooxygenase-2 (COX2) were also detected. The type 2 diabetes model mice were established by feeding high-sugar and high-fat diet combined with intraperitoneal injection of streptozotocin. The effects of low-dose and high-dose 1,8-cineole (50, 200 mg/kg) on the pathological morphology of pancreatic tissue, the content of iron as well as the protein expressions of GPX4 and COX2 were investigated.
RESULTS
2
The results of the cell experiment showed that compared with the model group, pretreatment with 1,8-cineole significantly reduced intracellular Fe
2+
levels and upregulated GPX4 protein expression, while downregulated COX2 protein expression in pancreatic β cells (
P
<0.05). After combining with Ferrostatin-1, the expression trends of the above two proteins were the same, while there was no statistically significant difference after combining with Erastin. The results of anima
l experiments showed that compared with the model group, after intervention with 1,8-cineole, the structure of the pancreatic islets in mice recovered intact and their morphology improved; the iron content of pancreatic tissue and protein expression of COX2 were decreased significantly (
P
<0.05), while protein expression of GPX4 was increased significantly (
P
<0.05).
CONCLUSIONS
2
1,8-cineole could ameliorate pancreatic β cell injury induced by diabetes, the mechanism of which may be related to reducing intracellular iron deposition and regulating ferroptosis-related proteins.
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