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穿心莲内酯调节 HMGB1/RAGE 信号通路对糖尿病周围神经病
变大鼠坐骨神经功能损伤的影响
Δ
孙跃先 ,王九妹 ,崔新刚 ,于 晶 (1.黑龙江省牡丹江林业中心医院骨科,黑龙江 牡丹江 157011;2.牡丹
1*
4 #
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2
江医学院附属红旗医院皮肤性病科,黑龙江 牡丹江 157000;3.牡丹江医学院公共卫生学院,黑龙江 牡丹江
157011;4.牡丹江医学院附属红旗医院内分泌科,黑龙江 牡丹江 157000)
中图分类号 R965;R285 文献标志码 A 文章编号 1001-0408(2024)05-0572-06
DOI 10.6039/j.issn.1001-0408.2024.05.11
摘 要 目的 探讨穿心莲内酯调节高迁移率族蛋白B1(HMGB1)/晚期糖基化终产物受体(RAGE)信号通路对糖尿病周围神经
病变(DPN)大鼠坐骨神经功能损伤的影响。方法 将84只大鼠随机分为对照组(生理盐水)、DPN组(生理盐水)、穿心莲内酯低剂
量组(0.833 mg/kg)、穿心莲内酯高剂量组(3.332 mg/kg)、硫辛酸组(阳性对照,0.1 g/kg)、重组大鼠HMGB1蛋白(rHMGB1,8 μg/kg)
组、穿心莲内酯高剂量+rHMGB1组,每组12只。除对照组外,其余各组大鼠均采用高糖高脂饲料喂养联合腹腔注射链脲佐菌素
的方式构建DPN模型。造模成功24 h后,进行给药处理,每天1次,持续8周。给药结束后,检测大鼠空腹血糖、机械痛阈值、热痛
阈值、坐骨神经传导速度的变化;观察大鼠坐骨神经病理变化;检测大鼠坐骨神经中超氧化物歧化酶(SOD)活性及丙二醛(MDA)
含量;检测大鼠坐骨神经中HMGB1、RAGE蛋白表达水平和核因子κB p65(NF-κB p65)蛋白磷酸化水平。结果 与对照组比较,
DPN组大鼠坐骨神经病理损伤严重,空腹血糖、热痛阈值、MDA含量及HMGB1、RAGE蛋白表达水平和NF-κB p65蛋白磷酸化水
平均显著升高(P<0.05),机械痛阈值、感觉神经传导速度、运动神经传导速度、SOD 活性显著降低/减慢(P<0.05);与 DPN 组比
较,穿心莲内酯低、高剂量组和硫辛酸组大鼠上述指标均显著改善(P<0.05),rHMGB1组对应指标变化趋势与上述3个给药组相
反(P<0.05);并且,rHMGB1 可减弱高剂量穿心莲内酯对 DPN 大鼠血糖的降低作用及坐骨神经氧化应激损伤的改善作用(P<
0.05)。结论 穿心莲内酯可能通过抑制HMGB1/RAGE信号通路来降低血糖、抑制氧化应激,进而改善DPN大鼠坐骨神经损伤。
关键词 穿心莲内酯;糖尿病周围神经病变;高迁移率族蛋白B1;晚期糖基化终产物受体;坐骨神经;氧化应激
Impacts of andrographolide on sciatic nerve function damage in diabetic peripheral neuropathy rats by
regulating HMGB1/RAGE signaling pathway
SUN Yuexian ,WANG Jiumei ,CUI Xingang ,YU Jin(1. Dept. of Orthopaedics, Heilongjiang Mudanjiang
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Forestry Central Hospital, Heilongjiang Mudanjiang 157011, China;2. Dept. of Dermatology and Venereology,
Hongqi Hospital Affiliated to Mudanjiang Medical University, Heilongjiang Mudanjiang 157000, China;
3. School of Public Health, Mudanjiang Medical University, Heilongjiang Mudanjiang 157011, China;4. Dept.
of Endocrinology, Hongqi Hospital Affiliated to Mudanjiang Medical University, Heilongjiang Mudanjiang
157000, China)
ABSTRACT OBJECTIVE To investigate the impacts of andrographolide on sciatic nerve function injury in diabetic peripheral
neuropathy (DPN) rats by regulating high-mobility group protein box 1 (HMGB1)/receptor for advanced glycation end products
(RAGE) signal pathway. METHODS A total of 84 rats were randomly divided into the control group (normal saline), DPN group
(normal saline), low-dose andrographolide group (0.833 mg/kg), high-dose andrographolide group (3.332 mg/kg), lipoic acid
group (positive control, 0.1 g/kg), recombinant rat HMGB1 protein (rHMGB1) group (8 μg/kg), and high-dose andrographolide+
rHMGB1 group, with 12 rats in each group. All rats except those in the control group were fed with high glucose and high fat diet
combined with intraperitoneal injections of streptozotocin to establish the DPN rat model. After 24 hours of successful modeling,
medication was administered daily for 8 weeks. The changes in fasting blood glucose, mechanical pain threshold, heat pain
threshold and sciatic nerve conduction velocity were detected. Pathological changes in the sciatic nerve of rats and the activity of
superoxide dismutase (SOD) and the content of malondialdehyde (MDA) in the sciatic nerve of rats were also detected. Besides,
the expressions of HMGB1, RAGE proteins and
phosphorylation level of nuclear factor κB p65(NF- κB p65)
Δ 基金项目 黑龙江省省属高等学校基本科研业务费科研项目
(No.2021-KYYWF-0515) protein in rat sciatic nerves were found. RESULTS Compared
*第一作者 副主任医师,硕士。研究方向:脊柱外科、关节外科等 with the control group, the pathological damage of the sciatic
骨科疾病诊治。电话:0453-6513151。E-mail:ria011@163.com nerve of rats in the DPN group was strengthened, the fasting
# 通信作者 副主任医师,硕士。研究方向:糖尿病及其并发症的 blood glucose, heat pain threshold, MDA content and the
诊治。E-mail:dqiaur@163.com expressions of HMGB1, RAGE proteins and phosphorylation
· 572 · China Pharmacy 2024 Vol. 35 No. 5 中国药房 2024年第35卷第5期