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1.730030 兰州, 兰州大学第二医院消化科
2.730030 兰州, 甘肃省人民医院西院消化科
3.730030 兰州, 甘肃省消化系肿瘤重点实验室
张德奎, E-mail: sczdk1972@163.com Zhang Dekui, E-mail: sczdk1972@163.com
纸质出版日期:2017-1-30,
收稿日期:2016-7-24,
录用日期:2016-10-14
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危蓉, 李佩容, 吴志平, 等. 二氢杨梅素对小鼠葡聚糖硫酸钠结肠炎的疗效[J]. 第三军医大学学报, 2017,39(2):169-174.
Rong Wei, Peirong Li, Zhiping Wu, et al. Efficacy of dihydromyricetin in treatment of dextran sulfate induced colitis in mice[J]. J Third Mil Med Univ, 2017,39(2):169-174.
危蓉, 李佩容, 吴志平, 等. 二氢杨梅素对小鼠葡聚糖硫酸钠结肠炎的疗效[J]. 第三军医大学学报, 2017,39(2):169-174. DOI: 10.16016/j.1000-5404.201607166.
Rong Wei, Peirong Li, Zhiping Wu, et al. Efficacy of dihydromyricetin in treatment of dextran sulfate induced colitis in mice[J]. J Third Mil Med Univ, 2017,39(2):169-174. DOI: 10.16016/j.1000-5404.201607166.
目的
2
观察二氢杨梅素(dihydromyricetin, DHM)治疗溃疡性结肠炎(ulcerative colitis, UC)的效果并探讨其机制。
方法
2
60只BALB/c小鼠采用随机数字表法分为正常组,模型组,DHM低剂量 、中剂量 、 高剂量 组,5-氨基水杨酸 组。分组当日给予正常组小鼠蒸馏水自行饮用,其余组小鼠给予4%葡聚糖硫酸钠(DSS)水溶液7 d诱导急性UC模型。于饮用DSS当日开始,用DHM各剂量组及5-氨基水杨酸组按各组拟定剂量分别进行灌胃处理,连续给药14 d。对比各组疾病活动指数(DAI)、结肠长度、脾脏指数的变化、结肠组织学评分,肠组织TLR2、TLR4和NF-κB 的活性以及炎性细胞因子IL-1β、TNF-α、IL-6表达及MPO、NO、SOD的活性变化。
结果
2
与模型组比较,DHM可显著降低结肠组织中TLR2、TLR4、NF-κB的表达,减少炎性因子如IL-1β、TNF-α、IL-6水平,同时还能够减少肠组织中MPO、NO活性及增加SOD的活性。其中DHM高剂量组优于低、中剂量组,差异有统 计学意义(
P
<0.05),治疗效果最明显,其与5-氨基水杨酸组相比差异无统计学意义(
P
>0.05),治疗效果相当。
结论
2
DHM可显著缓解DSS诱导的小鼠结肠炎症,其作用机制可能与抗炎、抗氧化有关。
Objective
2
To observe the curative effect of dihydromyricetin(DHM) in treating ulcerative colitis (UC) and to explore its mechanism.
Methods
2
Sixty BALB/c mice were randomly divided into normal group
model group
low-
middle-
and high-dosed DHM treatment groups and 5- ASA control group
with 10 mice in each group. The normal group was given distilled water to drink
and the other groups were given 4% dextran sodium sulfate (DSS) solution for 7 d to induce the acute UC model. At the beginning of the day of drinking DSS
the drugs were given to the mice of DHM and 5-ASA treatment groups respectively through intragastric continuous administration for 14 d. Disease activity index (DAI)
colon length
spleen index changes
histological scores
activities of TLR2
TLR4 and NF-kappa B
expression levels of inflammatory cytokines IL-1β
TNF-α
IL-6 and activities of MPO
NO
SOD in intestinal tissue were compared among the groups.
Results
2
Compared with model group
DHM could significantly reduce the expression of TLR2
TLR4
NF-κB in colon tissue
reduce the levels of inflammatory cytokines such as IL-1β
TNF-α and IL-6
and also reduce the production of MPO and NO and increase SOD activity in intestinal tissue. The high-dosed treatment group had better results than low- and middle-dosed treatment groups
with significant with differences (
P
<0.05)
and the treatment effect was most obvious and was equivalent to the action of 5-ASA (
P
>
0.05).
Conclusion
2
DHM can significantly alleviate the DSS induced colitis in mice
and its mechanism may be related to its anti-inflammatory and antioxidant activities.
二氢杨梅素葡聚糖硫酸钠结肠炎TLR2TLR4
dihydromyricetindextran sulphate sodium saltulcerative colitisToll-like receptor 2Toll-like receptor 4
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