1.上海中医药大学康复医学院(上海 201203)
2.上海中医药大学基础医学院(上海 201203)
顾祎宁,女,硕士研究生,主要从事老年病的中医药防治与康复工作
王健,副教授,硕士研究生导师; E-mail:wangjiantcm@126.com
徐颖,教授,博士研究生导师;E-mail:ying6122003@aliyun.com
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顾祎宁,卢志园,巴宗韬等.调心补肾方对阿尔茨海默病小鼠前额皮质中小胶质细胞激活和神经炎症反应的影响[J].上海中医药杂志,2022,56(08):84-89.
GU Yining,LU Zhiyuan,BA Zongtao,et al.Effects of Tiaoxin Bushen Formula on microglial activation and neuroinflammatory responses in prefrontal cortex of mice with Alzheimer’s disease[J].Shanghai Journal of Traditional Chinese Medicine,2022,56(08):84-89.
顾祎宁,卢志园,巴宗韬等.调心补肾方对阿尔茨海默病小鼠前额皮质中小胶质细胞激活和神经炎症反应的影响[J].上海中医药杂志,2022,56(08):84-89. DOI: 10.16305/j.1007-1334.2022.2201086.
GU Yining,LU Zhiyuan,BA Zongtao,et al.Effects of Tiaoxin Bushen Formula on microglial activation and neuroinflammatory responses in prefrontal cortex of mice with Alzheimer’s disease[J].Shanghai Journal of Traditional Chinese Medicine,2022,56(08):84-89. DOI: 10.16305/j.1007-1334.2022.2201086.
目的,2,探讨调心补肾方(TXBSF)对早老素1/2条件性双基因敲除(PS cDKO)的阿尔茨海默病(AD)小鼠前额皮质中小胶质细胞激活和神经炎症反应的影响。,方法,2,选取60只3~3.5月龄的PS cDKO小鼠及其同窝野生型对照小鼠,分为野生型(WT)组、模型(PS cDKO)组和模型+TXBSF(PS cDKO+TXBSF)组,每组20只。野生型组和模型组小鼠均食用普通饲料,模型+TXBSF组小鼠给予含有TXBSF(17.918 g/kg)饲料喂养90 d,药物治疗结束后取材进行分子生物学检测。采用免疫组化染色法观察TXBSF对各组小鼠前额皮质中小胶质细胞的激活情况;qRT-PCR法检测TXBSF对各组小鼠前额皮质中促炎症因子环氧化酶-2(,COX,-,2,)、诱导性一氧化氮合酶(,iNOS,)、肿瘤坏死因子-α(,TNF,-,α,)、白介素-1β(,IL,-,1β,)和白介素-6(,IL,-,6,)mRNA水平的影响;Western blot法检测TXBSF对各组小鼠前额皮质中COX-2和iNOS蛋白表达的影响;ELISA法检测TXBSF对各组小鼠前额皮质中TNF-α、IL-6和IL-1β含量的影响。,结果,2,免疫组化染色结果显示,与模型小鼠相比,模型+TXBSF组小鼠表现出下降的阿米巴样小胶质细胞比例(,P,<,0.05)、较多的分支数(,P,<,0.05)、较长的平均长度(,P,<,0.05)以及较长的最长分支长度(,P,<,0.05)。qRT-PCR结果显示,与模型组小鼠相比,模型+TXBSF组小鼠,COX-2,、,iNOS,、,TNF-α,、,IL-1β,和,IL-6, mRNA表达下降(,P,<,0.05)。Western blot结果显示,与模型组小鼠相比,模型+TXBSF组小鼠前额皮质中COX-2和iNOS的蛋白表达水平显著降低(,P,<,0.05)。ELISA结果显示,与模型组小鼠相比,模型+TXBSF组小鼠前额皮质中TNF-α、IL-6和IL-1β水平显著下降(,P,<,0.05)。,结论,2,TXBSF可能通过抑制前额皮质中小胶质细胞的激活和神经炎症反应来改善AD小鼠的记忆障碍。
Objective,2,To observe the effects of Tiaoxin Bushen Formula (TXBSF) on the activation of microglia and neuroinflammatory response in prefrontal cortex (PFC) of presenilin 1/2 conditional double knockout (PS cDKO) mice with Alzheimer’s disease.,Methods,2,Totally 60 PS cDKO mice aged 3-3.5 months and their littermates were randomly divided into three groups with 20 in each: wild type group (WT), model group (PS cDKO) and model+TXBSF group (PS cDKO+TXBSF). The mice in the WT and PS cDKO group were fed with standard chow, and the mice in the PS cDKO+TXBSF group were fed with standard chow containing TXBSF (17.918 g/kg) for 90 days. After drug administration, the mice were sacrificed for molecular biology detection. Immunohistochemical staining was used to observe the effect of TXBSF on the activation of microglia in PFC of mice in each group. qRT-PCR was used to analyze the effect of TXBSF on mRNA levels of proinflammatory factors in PFC of mice, such as cyclooxygenase-2 (,COX,-,2,), inducible nitric oxide synthase (,iNOS,), tumor necrosis factor-,α, (,TNF,-,α,), interleukin-1β (,IL,-,1β,) and interleukin-6 (,IL,-,6,). Western blot was used to detect the effect of TXBSF on the expressions of COX-2 protein and iNOS protein in PFC of mice in each group, and changes in the levels of TNF-α, IL-6 and IL-1β in PFC of mice in each group were measured by ELISA.,Results,2,Immunohistochemical staining showed that compared with PS cDKO mice, the mice with TXBSF demonstrated lower ratios of amoeboid microglia(,P<,0.05), more branching numbers (,P<,0.05), longer average branch length (,P<,0.05) and longer maximum branch length(,P<,0.05). The result of qRT-PCR showed that TXBSF significantly inhibited ,COX,-,2,, ,iNOS,, ,TNF,-,α,,,IL,-,1β, and ,IL,-,6, mRNA expression levels(,P,<,0.05). Western blot analysis showed that the protein expression levels of COX-2 and iNOS in PFC of PS cDKO mice treated with TXBSF were significantly lower than those in PS cDKO group (,P,<,0.05). The result of ELISA showed that compared with those of PS cDKO mice, the treatment of TXBSF could significantly reduce the levels of TNF-α,IL-6 and IL-1β in PFC of PS cDKO mice (,P,<,0.05).,Conclusion,2,TXBSF may improve the memory impairment by inhibiting the activation of microglia and neuroinflammatory responses in PFC of mice with Alzheimer’s disease.
阿尔茨海默病调心补肾方小胶质细胞神经炎症PS cDKO模型小鼠中药研究
Alzheimer’s diseaseTXBSFmicroglianeural inflammationPS cDKOmouse modeltraditional Chinese herbal medicine research
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