1、基于 TL4/NFB 信号通路探讨西格列汀与格列齐特对糖尿病大鼠肾功能的影响张威存,潘弟仪,黄晓冰广州中医药大学第三附属医院(广东 广州 510000)摘要目的:基于 Toll 样受体 4(TL4)/核因子B(NFB)信号通路探讨西格列汀与格列齐特对糖尿病大鼠肾功能的影响。方法:随机将 40 只大鼠分为 5 组,8 只一组。A、B、C、D 组采用常规方法建立糖尿病模型,E 组作为空白对照组。造模成功后第二天,A 组予以西格列汀+格列齐特缓释片灌胃,B 组予以西格列汀灌胃,C 组格列齐特缓释片灌胃,D 组作为模型组,与 E 组均予以等剂量的生理盐水灌胃。末次给药后采集五组大鼠的尾静脉血并检测其血
2、糖指标:空腹血糖(FPG)、糖化血红蛋白(HbA1c),肾功能指标:血清肌酐(Scr)、尿素氮(BUN)、尿微量白蛋白(ALB);并采用酶联免疫吸附测定(ELISA)法检测五组大鼠血清炎症因子:白介素1(IL1)、肿瘤坏死因子(TNF)水平;同时,采用 Western blot 法检测各组大鼠肾组织 TL4 和 NFBp65 蛋白表达情况。结果:与 E 组相比,A、B、C、D 组血糖和肾功能指标明显上升(P005),与 D 组相比,A、B、C 组血糖和肾功能指标下降(P005),且 A、B 组下降幅度高于 C 组(P005),A 组下降幅度高于 B 组(P005)。与 E 组相比,A、B、C、
3、D 组血清炎症因子水平和 TL4、NFB 蛋白表达量更高(P005),与 D 组相比,A、B、C 组血清炎症因子水平和 TL4、NFB 蛋白表达量更低(P005),且 A、B 组低于 C 组(P005),A 组低于 B 组(P005)。结论:西格列汀和格列齐特均可以通过下调 TL4/NFB 信号通路的蛋白表达,抑制糖尿病大鼠的炎症反应,改善其肾功能,且两者联合治疗的效果更佳。关键词:TL4/NFB 信号通路;西格列汀;糖尿病;肾功能中图分类号:5871文献标识码:A文章编号:10062882(2023)0357405DOI:1014035/jcnkihljyy202303024Effect o
4、f Sitagliptin and Gliclaide on enal Function in Diabetic ats Basedon TL4/NFB Signaling PathwayZhang Weicun,et alThe Third Affiliated Hospital of Guangzhou University of Chinese Medicine(Guangzhou Guangdong 510000)(内文见下页)7冯玥,胡仲琳,刘伟才三维虚拟牙科患者的建立对前牙美学修复效果的影响研究 J口腔医学,2022,42(10):905910 8欠洪波,高荣纳米复合树脂在前牙牙体
5、缺损修复中的美学及牙周状况评价J 中国美容医学,2022,31(4):133136 9陈小贤,钟洁,闫文娟,等树脂冠修复乳前牙的临床效果评价J 北京大学学报(医学版),2020,52(5):907912 10韩雨亭,吴燕茹应用龈壁提升术修复牙体缺损的研究进展J国际口腔医学杂志,2019,46(3):349355 11陈小贤,钟洁,闫文娟,等树脂冠修复乳前牙的临床效果评价J 北京大学学报(医学版),2020,52(5):907912 12赵小玲透明预成冠加树脂在乳前牙美容修复中的疗效分析 J 中国美容医学,2017,26(5):5859,81 13梁扬师,宁海燕,梁斌纳米树脂联合玻璃离子夹层技术
6、修复牙颈部楔状缺损的效果J 临床口腔医学杂志,2020,36(6):352356 14马雪婷,吕长海,刘波全麻下透明冠结合纤维桩修复儿童乳上前牙残冠临床分析J 中国美容医学,2022,31(9):126129收稿日期:20230301475黑龙江医药Heilongjiang Medicine Journal Vol36 No3 2023基金项目:广州中医药大学第三附属医院科研创新基金项目(项目编号:Sy2021003)Abstract Objective:To investigate the effects of sitagliptin and gliclaide on renal funct
7、ion in diabetic rats based on tolllike re-ceptor 4(TL4)/nuclear factorB(NFB)signaling pathway Methods:40 rats were randomly divided into 5 groups with 8 ratsin each group Group A,B,C and D adopted conventional methods to establish the diabetes model,group E as a blank control groupOn the second day
8、after the success of the model,group A was given sitagliptin+Gliclazide sustainedrelease tablets intragastric ad-ministration,group B was given sitagliptin intragastric administration,group C was given Gliclazide sustained release tabletsintragastric administration,group D,as the model group,and gro
9、up E were given equal doses of normal saline intragastric administra-tion After the last administration,tail venous blood of the five groups were collected and blood glucose indexes including fasting bloodglucose(FPG)and glycocated hemoglobin(HbA1c)were detected enal function indexes included serum
10、creatinine(Scr),urea ni-trogen(BUN)and urinary microalbumin(ALB)The levels of serum inflammatory factors including interleukin1(IL1)andtumor necrosis factor(TNF)were detected by enzymelinked immunosorbent assay(ELISA)Meanwhile,Western blot was usedto detect the expression of TL4 and NFBp65 protein i
11、n kidney tissue of each group esults:Compared with group E,blood glucoseand kidney function indexes of group A,B,C and D were significantly increased(P005),and compared with group D,blood glucoseand kidney function indexes of groups A,B and C were decreased(P005),and the decreasing range of groups A
12、 and B was higherthan that of group C(P005),and the decreasing range of group A was higher than that of group B(P005)Compared with groupE,the serum inflammatory factor levels and TL4,NFB protein expression levels in group A,B,C and D were higher(P005),theserum inflammatory factor levels and TL4,NFB
13、protein expression levels in groups A,B and C were lower than those in group C(P005),and the serum inflammatory factor levels in groups A and B were lower than those in group C(P005)Group A was low-er than group B(P005)Conclusions:Both sitagliptin and gliclazide can inhibit inflammatory response and
14、 improve renal functionin diabetic rats by downregulating the protein expression of TL4/NFB signaling pathway,and the combined treatment effect ofboth is betterKey words:TL4/NFB Signaling Pathway;Sitagliptin;Diabetes Mellitus;enal Function作为临床常见慢性疾病,糖尿病目前尚未有有效的治疗方法,一旦患病需终身用药进行控制,且易造成诸多并发症,既影响患者健康,又需
15、要承担巨大的经济负担,其中以糖尿病肾病造成的经济负担尤为显著1。糖尿病肾病的发病机制复杂,但炎症反应在其中发挥了关键作用。研究2 显示,持续的高血糖可以刺激并激活多种免疫炎症信号通路,进而促使细胞分泌炎症因子,使机体出现免疫炎症反应,最终引发糖尿病肾病,而 Toll 样受体 4(TL4)/核因子B(NFB)信号通路就是其中介导免疫炎症反应的关键信号通路。因此,有学者认为可以通过调控 TL4/NFB 信号通路防治糖尿病肾病。已有研究3 发现抑制 TL4/NFB 信号通路激活可以减轻高糖诱导的肾组织氧化应激、炎症、细胞外基质积累和系膜细胞增殖,进而控制糖尿病肾病病情进展。西格列汀和格列齐特都是临床
16、常用的降糖药物,两者不仅可以促进胰岛素分泌,还可以使肾获益。而且研究4 证实西格列汀可以抑制 NFB 相关信号通路的过度活化。但两者联用是否有助于提升长期控糖质量,减缓糖尿病肾病的发生和发展尚未有报道。为此本研究 TL4/NFB 信号通路探讨西格列汀与格列齐特联用对糖尿病大鼠肾功能的影响,现报道如下。1资料与方法11材料111动物材料SPF 级雄性 SpragueDawley(SD)大鼠 40只,78 周龄,体质量 180220g,购自解放军总医院实验动物中心,动物许可证号:SCXK(军)20110034;饲养于本院动物中心,动物房温度(24 50 2 00),湿度(59 50 1000)%,12h/12h 明暗交替循环照明,摄食饮水自由,通风良好。高脂高糖饲料(由 55%基础饲料、33%猪油、10%绵白糖和 2%蛋黄粉组成)、普通饲料(购自上海代轩生物科技有限公司)。112药品磷酸西格列汀片:生产厂家:Organon Pharma(UK)Limited(杭州默沙东制药有限公司分装),批准文号:国药准字 J20140095;格列齐特缓释片:生产厂家:施维雅(天津)制药有限公司,批准文号