Shu-mei CUI, Hong-yan WU, Chun-lin MA, et al. Effect of Hei Xiaoyaosan on Expressions of APP, PERK in Hippocampus Area of Alzheimer's Dementia Mice[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(22): 8-14.
DOI:
Shu-mei CUI, Hong-yan WU, Chun-lin MA, et al. Effect of Hei Xiaoyaosan on Expressions of APP, PERK in Hippocampus Area of Alzheimer's Dementia Mice[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(22): 8-14. DOI: 10.13422/j.cnki.syfjx.20192101.
Effect of Hei Xiaoyaosan on Expressions of APP, PERK in Hippocampus Area of Alzheimer's Dementia Mice
To study the effect of Hei Xiaoyaosan on endoplasmic reticulum stress in hippocampal neurons of Alzheimer's disease (AD) model mice
including behavioral
histopathology and amyloid precursor protein (APP)
protein kinase endoplasmic reticulum kinase (PERK) expressions.
Method:
2
The 42 4-month-old SPF-grade double transgenic (APP/PS1) mice were randomly divided into the high-dose group and the low-dose group
the donepezil hydrochloride group and the model group
and 10 C57BL mice of the same age were used as the blank group. Firstly
they were adapted to the environment for one week. After 2 months of treatment with different drug interventions
Morris water maze behavior was used to test the learning and memory abilities of each group of mice. After 1 month of treatment
histopathological changes in the hippocampus of each group of mice were observed by light microscopy. The expressions of APP
PERK protein and mRNA in the endoplasmic reticulum of hippocampus were detected by immunohistochemistry (IHC) and real-time fluorescent quantitative polymerase chain reaction (Real-time PCR).
Result:
2
After drug intervention
compared with the blank group
the escape latency of the AD model group was significantly prolonged (
P
<
0.01)
the neurons in the hippocampus of the model group were severely damaged
and the expressions of APP and PERK in the model group were significantly increased (
P
<
0.01). In the comparison model group
the escape latency of the mice in each treatment group was significantly shortened (
P
<
0.05
P
<
0.01)
the degree of neuronal damage in the hippocampus of each treatment group was alleviated
and the positive expressions of APP and PERK in each treatment group were weakened (
P
<
0.05).
Conclusion:
2
Hei Xiaoyaosan can significantly improve the learning and memory abilities of AD mice
which may be related to the reduction of the excessive stress response of endoplasmic reticulum to alleviate cognitive impairment in AD mice.
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