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1.广州中医药大学 岭南医学研究中心,广州 510405;
2.广州中医药大学 第一附属医院,广州 510405
石玉莹,在读硕士,从事中药新药开发与安全性评价研究,E-mail:389669268 @qq.com
唐洪梅,博士,教授,主任中药师,从事中药新药开发与安全性评价研究,Tel:020-86358342,E-mail:tanghongmei2000@163.com
收稿日期:2018-09-26,
网络出版日期:2019-01-18,
纸质出版日期:2019-06-05
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石玉莹, 唐洪梅, 吴映秀, 等. 肠激安方对IBS-D大鼠肠道通透性的影响[J]. 中国实验方剂学杂志, 2019,25(11):80-85.
Yu-ying SHI, Hong-mei TANG, Ying-xiu WU, et al. Effect of Changji′an Prescription on Intestinal Permeability of IBS-D Rats[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(11): 80-85.
石玉莹, 唐洪梅, 吴映秀, 等. 肠激安方对IBS-D大鼠肠道通透性的影响[J]. 中国实验方剂学杂志, 2019,25(11):80-85. DOI: 10.13422/j.cnki.syfjx.20190905.
Yu-ying SHI, Hong-mei TANG, Ying-xiu WU, et al. Effect of Changji′an Prescription on Intestinal Permeability of IBS-D Rats[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(11): 80-85. DOI: 10.13422/j.cnki.syfjx.20190905.
目的:
2
观察肠激安方对腹泻型肠易激综合征(IBS-D)大鼠肠道通透性的影响,探讨肠激安方治疗IBS-D的作用机制。
方法:
2
SD雄性乳鼠,随机分为5组,分别为正常组,模型组,匹维溴铵组(0.018 g·kg
-1
),肠激安高、低剂量组(33.48,16.74 g·kg
-1
),除正常组外,均采用“母婴分离+醋酸刺激+束缚应激”三因素结合的方法建立IBS-D模型。给药后,采用透射电镜观察大鼠肠黏膜超微结构;酶联免疫吸附测定(ELISA)法检测大鼠血浆
D
-乳酸水平;蛋白免疫印迹法(Western blot)检测大鼠结肠紧密连接蛋白闭锁蛋白(Occludin),闭合蛋白-1(Claudin-1)的表达;实时荧光定量聚合酶链式反应(Real-time PCR)检测Occludin,Claudin-1,紧密连接蛋白-1(ZO-1) mRNA表达。
结果:
2
与正常组比较,IBS-D模型组大鼠肠黏膜上皮细胞损伤,微绒毛排列较稀疏,紧密连接间隙增宽,有的不甚明显;血浆
D
-乳酸水平明显升高(
P
<
0.05),结肠中Occludin,Claudin-1 mRNA及蛋白表达降低(
P
<
0.05),ZO-1 mRNA表达降低(
P
<
0.05)。药物治疗后,与模型组比较,各给药组大鼠肠黏膜细胞损伤修复;匹维溴铵组、肠激安方高剂量组血浆
D
-乳酸水平明显降低(
P
<
0.05),肠激安方低剂量组血浆
D
-乳酸水平有降低趋势,但不具有统计学差异。各给药组大鼠结肠中Occludin,Claudin-1 mRNA及蛋白表达水平,ZO-1 mRNA表达水平升高(
P
<
0.05)。
结论:
2
肠激安方对IBS-D的治疗作用可能是改善肠道通透性实现的。
Objective:
2
To observe the effect of Changji′an prescription on intestinal permeability in diarrhea-predominant irritable bowel syndrome (IBS-D) rats and explore its mechanism for treatment of IBS-D.
Method:
2
Male SD neonatal rats were randomly divided into five groups: normal group
model group
pinaverium bromide group(0.018 g·kg
-1
)
high-dose(33.48 g·kg
-1
) and low-dose (16.74 g·kg
-1
)Changji′an prescription groups. Except for the normal group
the IBS-D model was established by the combination of maternal and infant separation+ acetic acid stimulation+ restraint stress. After drug treatment
the ultrastructure of rat intestinal mucosa was observed by using transmission electron microscopy and the plasma
D
-lactate level was detected by enzyme-linked immunosorbent assay (ELISA). The expression levels of tight junction proteins Occludin and Claudin-1 were detected by Western blot. The mRNA expression levels of Occludin
Claudin-1 and zonula occluden(ZO)-1 were detected by real time polymerase chain reaction (Real-time PCR).
Result:
2
As compared with the normal group
the intestinal mucosal epithelial cells were damaged in IBS-D model group
and the microvilli arrangement was sparse and tight junction was widened
and some were not obvious
and the plasma
D
-lactate level in IBS-D rats was increased significantly (
P
<
0.05)
and the mRNA and protein expression levels of Occludin and Claudin-1 in the colon were decreased and the mRNA expression of ZO-1 was also decreased (
P
<
0.05). After drug treatment
as compared with the model group
all drug-administered groups can repair intestinal mucosal cell damage. Plasma
D
-lactate level in pinaverium bromide group and high-dose Changji′an prescription group was significantly decreased (
P
<
0.05) while
D
-lactate level in the low-dose group Changji′an prescription group had a tendency to decrease with no statistical difference. The mRNA and protein expression levels of Occludin and Claudin-1 and the mRNA expression of ZO-1 in the colon of rats in each administration group were higher than those in the model group (
P
<
0.05).
Conclusion:
2
The therapeutic effect of Changji′an prescription on IBS-D may be achieved by improving the intestinal permeability.
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