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1.湖北中医药大学,武汉 430065
2.山西中医药大学,太原 030024
王超群,在读博士,从事方剂效用及其物质基础研究,E-mail:1529971436@qq.com
周然,博士生导师,从事方剂效用及其物质基础研究,E-mail:zhour58@sohu.com
收稿日期:2020-03-12,
网络出版日期:2020-07-30,
纸质出版日期:2020-10-05
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王超群,王永辉,刘涛等.左归丸对妊娠糖尿病大鼠血清相关指标及胰腺PDX-1表达的影响[J].中国实验方剂学杂志,2020,26(19):114-119.
.Effect of Zuoguiwan on Serum Related Indexes and Pancreatic PDX-1 Expression in GDM Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(19):114-119.
王超群,王永辉,刘涛等.左归丸对妊娠糖尿病大鼠血清相关指标及胰腺PDX-1表达的影响[J].中国实验方剂学杂志,2020,26(19):114-119. DOI: 10.13422/j.cnki.syfjx.20201937.
.Effect of Zuoguiwan on Serum Related Indexes and Pancreatic PDX-1 Expression in GDM Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(19):114-119. DOI: 10.13422/j.cnki.syfjx.20201937.
目的
2
研究左归丸母代干预对妊娠糖尿病(GDM)模型大鼠血清及以胰腺指标改善作用的影响。
方法
2
通过雌雄同笼及腹腔注射链脲佐菌素(STZ)的方法复制GDM孕鼠模型,采用随机数字表法将孕鼠分为正常组,模型组,门冬胰岛素组(20 U·kg
-1
),左归丸低、中、高剂量组(2.5,5.0,10.0 g·kg
-1
)。各组分别灌服相应药物2周,正常组和模型组予以等体积生理盐水,采用酶联免疫吸附测定(ELISA)检测大鼠血清胰岛素,空腹血糖(FBG),及炎性因子肿瘤坏死因子-
α
(TNF-
α
),白细胞介素-6(IL-6),白细胞介素-8(IL-8)的水平;蛋白免疫印迹法(Western blot),实时荧光定量聚合酶链式反应(Real-time PCR)检测大鼠胰腺十二指肠同源盒因子-1(PDX-1)蛋白及mRNA的表达水平。
结果
2
与正常组比较,模型组大鼠空腹血糖及炎性因子TNF-
α
,IL-6均显著升高(
P
<
0.01),IL-8水平明显升高(
P
<
0.05),大鼠血清胰岛素水平、胰腺PDX-1蛋白及mRNA表达均显著降低(
P
<
0.01);与模型组比较,门冬胰岛素组血糖及血清炎性因子IL-8水平显著降低(
P
<
0.01),血清胰岛素水平、胰腺PDX-1蛋白及mRNA表达均显著升高(
P
<
0.01),左归丸中剂量组血糖及炎性因子TNF-
α
,IL-6,IL-8显著降低(
P
<
0.01),血清胰岛素水平、胰腺PDX-1蛋白及mRNA表达均显著升高(
P
<
0.01)。
结论
2
左归丸可能通过降低GDM大鼠血清炎性因子水平,减少炎症反应及氧化应激反应的发生,以提升胰岛素的分泌,同时上调PDX-1蛋白和mRNA的表达,改善胰岛素抵抗,减少胰岛
β
细胞的损伤,降低大鼠血糖。
Objective
2
To investigate the effect of maternal intervention of Zuoguiwan on the improvement of serum and pancreatic index in rats of gestational diabetes mellitus(GDM).
Method
2
The GDM pregnant rats were replicated by monogamous cage and introneal injection of streptozotocin (STZ). The pregnant rats were randomly divided into normal group
model group
insulin group (20 U·kg
-1
)
and low
medium and high-dose Zuoguiwan groups (2.5,5.0,10.0 g·kg
-1
). The insulin group was given hypodermic injection of portal winter insulin
all drug groups were respectively administrated with corrsponding drugs for 2 weeks
once a day. Meanwhile
control group and model group were given physiological saline by gavage. After that
the levels of serum insulin
fasting plasma glucose(FBG)
tumor necrosis factor-
α
(TNF-
α
)
interleukin-6 (IL-6) and IL-8 were measured by enzyme-linked immunosorbent assay (ELISA)
protein and gene expression levels of Pancreas-duodenal homologous box factor-1 (PDX-1) were respectively detected by Western blot and real-time fluorescence quantitative polymerase chain reaction(Real-time PCR).
Result
2
Compared with normal group
FBG
TNF-
α
and IL-6 levels of pregnant rats in model group increased significantly (
P
<
0.01)
the level of IL-8 increased uniformly (
P
<
0.05)
and serum insulin level
protein and gene expression levels of PDX-1 decreased significantly (
P
<
0.01). Compared with model group
FBG and serum IL-8 levels of pregnant rats in insulin group were significantly lower (
P
<
0.01)
while serum insulin level
protein and gene expression levels of PDX-1 increased significantly(
P
<
0.01). FBG
IL-8
IL-6 and TNF-
α
levels in serum of pregnant rats in medium-dose Zuoguiwan group decreased obviously
meanwhile serum insulin level
protein and gene expression levels of PDX-1 increased significantly (
P
<
0.01).
Conclusion
2
Zuoguiwan may promote the secretion of insulin by reducing the serum inflammatory factors in GDM rats
and at the same time up-regulate the expression of PDX-1 protein and gene
so as to restrain insulin resistance
reduce the damage of pancreatic cells and improve the blood glucose of rats.
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