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1.山西中医药大学 神经生物学研究中心,晋中 030619;
2.大同大学 脑科学研究所,山西 大同 037009;
3.复旦大学 附属华山医院 神经病学研究所,上海 200025
刘建春,硕士,副教授,从事神经系统形态学研究,E-mail:liujc68@163.com
马存根,博士,教授,博士生导师,从事神经免疫学研究,E-mail:macungen2001@163.com
收稿日期:2018-11-16,
网络出版日期:2019-03-19,
纸质出版日期:2019-07-20
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刘建春, 张红珍, 郭文娟, 等. 补阳还五汤对自身免疫性脑脊髓炎模型小鼠神经保护作用的机制探讨[J]. 中国实验方剂学杂志, 2019,25(14):55-61.
Jian-chun LIU, Hong-zhen ZHANG, Wen-juan GUO, et al. Neuroprotective Mechanism of Buyang Huanwu Tang on Experimental Autoimmune Encephalomyelitis Mice[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(14): 55-61.
刘建春, 张红珍, 郭文娟, 等. 补阳还五汤对自身免疫性脑脊髓炎模型小鼠神经保护作用的机制探讨[J]. 中国实验方剂学杂志, 2019,25(14):55-61. DOI: 10.13422/j.cnki.syfjx.20191340.
Jian-chun LIU, Hong-zhen ZHANG, Wen-juan GUO, et al. Neuroprotective Mechanism of Buyang Huanwu Tang on Experimental Autoimmune Encephalomyelitis Mice[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(14): 55-61. DOI: 10.13422/j.cnki.syfjx.20191340.
目的:
2
探讨补阳还五汤(BYHWT)在实验性自身免疫性脑脊髓炎(EAE)发展的不同阶段的神经保护作用和机制。
方法:
2
采用髓鞘少突胶质细胞糖蛋白35-55多肽(MOG
35-55
)诱导36只C57BL/6雌性小鼠建立实验性自身免疫性脑脊髓炎(EAE)模型,随机分为EAE 9,17,28 d组以及BYHWT 9,17,28 d组。BYHWT各组于免疫后第3天开始灌胃给药(50 g·kg
-1
·d
-1
),EAE组以相同方式等体积给予生理盐水,每天1次,连续至免疫后9,17,28 d。采用国际通用的五级临床症状评分观察BYHWT对EAE小鼠的干预作用;采集小鼠脊髓标本,进行苏木素-伊红(HE)染色和固蓝(LFB)染色观察BYHWT的神经保护作用;采用蛋白免疫印迹法(Western blot)检测脊髓神经营养因子(BDNF)和生长相关蛋白-43(GAP-43)等的表达。
结果:
2
补阳还五汤治疗后可明显抑制脊髓炎细胞浸润,减轻髓鞘脱失;与EAE组比较,BYHWT各给药组Nogo-A在脊髓表达显著下调(
P
<
0.01),与EAE 17,28 d组比较,BYHWT 17 d组和28 d组BDNF在脊髓中表达明显上调(
P
<
0.05,
P
<
0.01);与EAE 9,17 d组比较,BYHWT 9,17 d组GAP-43在脊髓中表达显著上调(
P
<
0.01)。
结论:
2
补阳还五汤可以通过上调NTFs类物质的表达,下调神经抑制因子的表达,改善局部神经生长微环境而发挥神经保护的作用。
Objective:
2
To explore the neuroprotective effect and mechanism of Buyang Huanwu Tang (BYHWT) on experimental autoimmune encephalomyelitis (EAE) at different stages.
Method:
2
The 36 female C57BL/6 mice were immunized subcutaneously with myelin oligodendrocyte glycoprotein peptides (MOG
35-55
)
then randomly divided into 9
17
28 d EAE control group. Each BYHWT group was orally given drugs on the 3
rd
day after immunization (50 g·kg
-1
·d
-1
)
and EAE control group was given the same volume of normal saline in the same way once a day for 9
17 and 28 d after immunization. The effect of BYHWT on EAE mice was observed with internationally accepted clinical score. Brain and spinal cord specimens were collected at 9
17 and 28 d after immunization. The neuroprotective effect of BYHWT was observed by hematoxylin-eosin(HE)staining and solid blue staining (LFB). The expressions of BDNF and GAP-43 in spinal cord and brain were detected by Western blot.
Result:
2
After treatment
BYHWT can significantly inhibit myelitis cell infiltration and alleviate myelin loss. Compared with EAE group
the expression of Nogo-A in the spinal cord of each BYHWT group was significantly down-regulated (
P
<
0.01)
and the expression of BDNF in the spinal cord was significantly up-regulated (
P
<
0.05
P
<
0.01) in the BYHWT group 17 and 28 d group compared with EAE group 17 and 28 d group. Compared with EAE 9
17 d group
GAP-43 expression was significantly up-regulated in the spinal cord of BYHWT 9
17 d group (
P
<
0.01).
Conclusion:
2
BYHWT can improve the local nerve growth microenvironment and promote the expression of NTFs
reduce the expressions of neuroinhibitory factors
and play a role in neuroprotection.
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