1.上海中医药大学基础医学院(上海 201203)
2.复旦大学附属中山医院呼吸科(上海 200032)
3.上海市徐汇区中心医院呼吸科(上海 200031)
4.上海市徐汇区中心医院中医科(上海 200031)
卢志园,女,硕士研究生,主要从事中医药对脑疾病的作用机制研究工作
杨建梅,主任医师,硕士研究生导师;E-mail: jianmeiyang@163.com
徐颖,教授,博士研究生导师;E-mail: ying6122003@aliyun.com
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卢志园,王葆青,赵晨怡等.调心补肾方改善阿尔茨海默病小鼠前额皮质突触缺失和tau蛋白过度磷酸化的作用研究[J].上海中医药杂志,2022,56(09):76-81.
LU Zhiyuan,WANG Baoqing,ZHAO Chenyi,et al.Study on effects of Tiaoxin Bushen Formula on improving synapse loss and tau hyperphosphory⁃lation in prefrontal cortex of Alzheimer’s disease mice[J].Shanghai Journal of Traditional Chinese Medicine,2022,56(09):76-81.
卢志园,王葆青,赵晨怡等.调心补肾方改善阿尔茨海默病小鼠前额皮质突触缺失和tau蛋白过度磷酸化的作用研究[J].上海中医药杂志,2022,56(09):76-81. DOI: 10.16305/j.1007-1334.2022.2205067.
LU Zhiyuan,WANG Baoqing,ZHAO Chenyi,et al.Study on effects of Tiaoxin Bushen Formula on improving synapse loss and tau hyperphosphory⁃lation in prefrontal cortex of Alzheimer’s disease mice[J].Shanghai Journal of Traditional Chinese Medicine,2022,56(09):76-81. DOI: 10.16305/j.1007-1334.2022.2205067.
目的,2,研究调心补肾方(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)小鼠模型前额皮质(PFC)突触缺失和tau蛋白过度磷酸化的影响。,方法,2,采用3~3.5月龄小鼠,雌雄各半,随机分为野生型组(WT)、PS cDKO模型组(cDKO)、PS cDKO+TXBSF组(cDKO+TXBSF),每组6只。WT和cDKO两组小鼠给予普通饲料,cDKO+TXBSF小鼠给予含TXBSF(给药剂量为2.55 g/kg)的饲料喂养,共治疗90 d。采用Western blot法检测小鼠PFC中N-甲基-D-天冬氨酸受体(NMDAR)亚基(NR1、NR2A、NR2B)、微管相关蛋白2(MAP2)和tau蛋白表达;qRT-PCR法检测小鼠PFC中,NR1、NR2A、NR2B,和,MAP2, mRNA表达。,结果,2,Western blot检测结果显示,与cDKO小鼠相比,cDKO+TXBSF小鼠PFC中NR1、NR2A、NR2B和MAP2蛋白表达增加(,P,<,0.05);磷酸化tau(ser 396/404)蛋白表达减少(,P,<,0.05)。qRT-PCR结果显示,与cDKO小鼠相比,cDKO+TXBSF小鼠PFC中,NR1、NR2A、NR2B,和,MAP2, mRNA表达增加(,P,<,0.05)。,结论,2,TXBSF对PS cDKO小鼠记忆缺陷的改善作用可能通过逆转PFC的tau蛋白过度磷酸化和下调突触相关蛋白的表达来实现。
Objective,2,To elucidate the beneficial effects of Tiaoxin Bushen Formula (TXBSF) on synapse loss and tau hyperphosphorylation in the prefrontal cortex (PFC) of Alzheimer’s disease (AD) model mice with presenilin 1/2 conditional double knockout (PS cDKO).,Methods,2,Mice aged 3~3.5 months, half male and half female, were randomly divided into three groups: Wildtype group (WT, ,n,=6), PS cDKO group (cDKO, ,n,=6), and PS cDKO+TXBSF group (cDKO+TXBSF, ,n,=6). The mice in the WT and cDKO groups were continuously fed with standard chow, and mice in cDKO+TXBSF group were fed with TXBSF (2.55 g/kg). After 90 days of treatment, Western blot analysis was used to evaluate the protein expression levels of synapse-associated proteins in the PFC of mice, such as N-methyl-d-aspartate receptor (NMDAR) subunits (NR1, NR2A, NR2B), Microtubule associated protein-2 (MAP2) and tau hyperphosphorylation; qRT-PCR was used to detect the mRNA levels of synapse-associated proteins in the PFC of mice, including ,NR1,,, NR2A,,, NR2B,, and ,MAP2,.,Results,2,Western blot results showed that compared with mice in cDKO group, mice in cDKO+TXBSF group had higher protein expression levels of synapse-related proteins (NR1, NR2A, NR2B and MAP2) (,P,<,0.05) and lower expression level of p-tau (ser 396/404) (,P,<,0.05). The qRT-PCR analysis showed that compared with mice in cDKO group, mice in the cDKO+TXBSF group had higher mRNA levels of synapse-related proteins (,NR1,,, NR2A,,, NR2B,, and ,MAP2,) in the PFC of mice (,P,<,0.05).,Conclusion,2,TXBSF has the potential to improve memory impairments in PS cDKO mice, which could be achieved by attenuating tau hyperphosphorylation and up-regulating expression of synaptic proteins in the PFC.
阿尔茨海默病调心补肾方前额皮质突触缺失tau蛋白小鼠模型中药研究
Alzheimer’s diseaseTiaoxin Bushen Formulaprefrontal cortexsynapse losstau proteinmouse modeltraditional Chinese herbal medicine research
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