中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (29): 4616-4623.doi: 10.12307/2022.845

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

叔丁基对苯二酚对2型糖尿病模型大鼠各器官的保护作用

田  敏,刘玉婷,谢立科,曹  阳,吕红彬   

  1. 西南医科大学附属医院眼科,四川省泸州市  646000
  • 收稿日期:2021-10-08 接受日期:2021-11-13 出版日期:2022-10-18 发布日期:2022-03-27
  • 通讯作者: 吕红彬,博士,主任医师,教授,西南医科大学附属医院眼科,四川省泸州市 646000
  • 作者简介:田敏,女,1987年生,四川省泸州市人,汉族,2014年西南医科大学毕业,硕士,主治医师,主要从事玻璃体视网膜疾病、糖尿病视网膜病变方面的研究。
  • 基金资助:
    四川省教育厅项目(17ZA0428),项目负责人:吕红彬;西南医科大学科研项目(2015-YJ006),项目负责人:吕红彬

Protective effects of tertiary butylhydroquinone on various organs in type 2 diabetic rats

Tian Min, Liu Yuting, Xie Like, Cao Yang, Lyu Hongbin   

  1. Department of Ophthalmology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2021-10-08 Accepted:2021-11-13 Online:2022-10-18 Published:2022-03-27
  • Contact: Lyu Hongbin, MD, Chief physician, Professor, Department of Ophthalmology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Tian Min, Master, Attending physician, Department of Ophthalmology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:
    a grant from Sichuan Provincial Department of Education, No. 17ZA0428 (to LHB); Southwest Medical University Scientific Research Project, No. 2015-YJ006 (to LHB)

摘要:

文题释义:
PFKFB3:即6-磷酸果糖激酶-2/果糖双磷酸酶-2同工酶3,是糖酵解途径的一种关键调节器,其表达增高促进糖酵解通量增加,可调节血管内皮细胞的增殖、迁移和血管发芽,并可通过诱导内皮增殖和迁移来促进血管生成过程。
S1P2:即1-磷酸鞘氨醇受体2,在血管内皮细胞中高表达,当受到低氧、炎症刺激因子和生长因子等因素刺激时其表达上调并在细胞增殖、炎症调节、肿瘤代谢、血管形成等过程中起着重要作用。

背景:糖尿病可引起全身组织器官的功能障碍,而6-磷酸果糖激酶-2/果糖双磷酸酶-2同工酶3(6-phosphofructo-2-kinase /fructose-2,6-bisphosphatase-3,PFKFB3)和1-磷酸鞘氨醇受体2可能与糖尿病的并发症相关,叔丁基对苯二酚对糖尿病的并发症有一定的保护作用。
目的:观察PFKFB3、1-磷酸鞘氨醇受体2在2型糖尿病大鼠各器官(心脏、视网膜、肾脏、主动脉)中的表达,并探讨叔丁基对苯二酚与PFKFB3、1-磷酸鞘氨醇受体2的关系。
方法:雄性SD大鼠24只,随机分为正常对照组、糖尿病组和叔丁基对苯二酚组,后两组制备2型糖尿病大鼠模型,造模成功后7 d,叔丁基对苯二酚组大鼠在高脂高糖饲料中添加1%叔丁基对苯二酚喂养;糖尿病组大鼠继续高脂高糖饲料喂养。干预12周后,检测各组大鼠血糖及胰岛素水平;免疫组织化学法及qRT-PCR检测各器官中PFKFB3、1-磷酸鞘氨醇受体2蛋白及mRNA的分布和表达;TUNEL法检测各组大鼠不同器官细胞的凋亡指数。
结果与结论:①各组大鼠血糖和胰岛素的总体比较差异有显著性意义(P=0.000, P=0.000);②PFKFB3、1-磷酸鞘氨醇受体2主要分布于视网膜神经节细胞层、内核层、主动脉内膜内皮细胞、心肌细胞、心肌间血管内皮细胞、肾小管细胞中;③各组视网膜、主动脉内膜内皮细胞、心肌细胞、心肌间血管内皮细胞、肾小管细胞中PFKFB3、1-磷酸鞘氨醇受体2蛋白及mRNA的相对表达量的总体比较差异均有显著性意义(P < 0.05);肾小球中1-磷酸鞘氨醇受体2蛋白及mRNA相对表达量的总体比较差异均有显著性意义(P < 0.05);糖尿病组PFKFB3、1-磷酸鞘氨醇受体2的表达较正常对照组增加(P < 0.05);叔丁基对苯二酚组PFKFB3、1-磷酸鞘氨醇受体2的表达较糖尿病组降低(P < 0.05);④TUNEL法检测结果显示,各组大鼠视网膜神经节细胞、心肌细胞、肾小管细胞、主动脉全层细胞凋亡指数的总体比较差异有显著性意义(均P < 0.05);糖尿病组较正常对照组增多(均为P < 0.05),叔丁基对苯二酚组较糖尿病组减少(均P < 0.05);⑤提示代谢产物PFKFB3、1-磷酸鞘氨醇受体2参与糖尿病大鼠各器官的病理过程,并可能与糖尿病大鼠各器官细胞的凋亡相关;叔丁基对苯二酚可降低PFKFB3、1-磷酸鞘氨醇受体2的表达,减少各器官中细胞的凋亡,说明叔丁基对苯二酚对2型糖尿病大鼠各器官有一定的保护作用。
缩略语:6-磷酸果糖激酶-2/果糖双磷酸酶-2同工酶3:6-phosphofructo-2-kinase /fructose-2,6-bisphosphatase-3,PFKFB3;1-磷酸鞘氨醇受体2:sphingosine-1-phosphate receptor 2,S1P2;叔丁基对苯二酚:tertiary butylhydroquinone,tBHQ

https://orcid.org/0000-0003-3827-3007 (田敏) 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: PFKFB3, S1P2, 叔丁基对苯二酚, 糖尿病, 心脏, 视网膜, 肾脏, 主动脉

Abstract: BACKGROUND: Diabetes can cause dysfunction of the whole body tissues and organs. 6-Phosphofructokinase-2/fructose bisphosphatase-2 isoenzyme 3 (PFKFB3) and sphingosine 1-phosphate receptor 2 (S1P2) may be related to the complications of diabetes. Tertiary butylhydroquinone has a certain protective effect on the complications of diabetes.
OBJECTIVE: To study the expression of PFKFB3 and S1P2 in various organs (heart, retina, kidney, and aorta) of type 2 diabetic rats and to explore the relationship between tertiary butylhydroquinone and PFKFB3 and S1P2. 
METHODS: Twenty-four male Sprague-Dawley rats were divided into normal control group, diabetic group and tertiary butylhydroquinone group. Diabetic models were made in the latter two groups. At 7 days after modeling, the rats in the tertiary butylhydroquinone group were fed with high-fat and high-sugar diet containing 1% tertiary butylhydroquinone, while those in the diabetic group continued to be fed with high-fat and high-sugar diet. After 12 weeks of intervention, the blood glucose and insulin levels were detected; immunohistochemistry and qRT-PCR were used to detect the distribution and expression of PFKFB3 and S1P2 at protein and mRNA levels, respectively; and TUNEL method was used to detect the apoptosis index in different rat organ cells.
RESULTS AND CONCLUSION: There was an overall significant difference in the blood glucose and insulin levels between groups (P=0.000, P=0.000). PFKFB3 and S1P2 were mainly distributed in the retinal ganglion cell layer, the inner nuclear layer, aortic intima endothelial cells, cardiomyocytes, interstitial myocardial endothelial cells, and renal tubular cells. The relative protein and mRNA levels of PFKFB3 and S1P2 were significantly different in the retina, aortic intimal endothelial cells, cardiomyocytes, interstitial myocardial endothelial cells, and renal tubular cells (all P < 0.05). The overall difference in the relative expression of S1P2 protein and mRNA in the glomerulus was statistically significant (all P < 0.05). Compared with the normal control group, the expression of PFKFB3 and S1P2 was significantly increased in the diabetic group (P < 0.05), while compared with the diabetic group, the expression of PFKFB3 and S1P2 was significantly decreased in the tertiary butylhydroquinone group (P < 0.05). TUNEL results indicated that there was an overall significant difference in the apoptotic index of rat retinal ganglion cells, cardiomyocytes, renal tubular cells, and aortic full-thickness cells between groups (all P < 0.05). The overall apoptotic index of various organs in the diabetic group was significantly higher than that in the normal control group (P < 0.05), while compared with the diabetic group, the overall apoptotic index was significantly reduced in the tertiary butylhydroquinone group (P < 0.05). To conclude, PFKFB3 and S1P2 are the metabolites involved in the pathological process of various organs in diabetic rats and may be related to the apoptosis of cells in various organs of diabetic rats. Tertiary butylhydroquinone can reduce the expression of PFKFB3 and S1P2 and reduce cell apoptosis in various organs, indicating that tertiary butylhydroquinone has a certain protective effect on various organs of type 2 diabetic rats.

Key words: PFKFB3, S1P2, tertiary butylhydroquinone, diabetes, heart, retina, kidney, aorta

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