Relationship between the MAPK/ERK pathway and neurocyte apoptosis after cerebral infarction in rats.

Abstract:

OBJECTIVE:The aim of this study was to explore the relationship between the mitogen-activated protein kinase (MAPK)/extracellular regulated protein kinase (ERK) pathway and neurocyte apoptosis after cerebral infarction in rats. MATERIALS AND METHODS:Neural stem cells were isolated from rats by establishing the cerebral infarction model and sham model. Isolated cells were cultured in complete culture medium in vitro. Real-time quantitative Reverse Transcription-Polymerase Chain Reaction (qRT-PCR) was used to detect the messenger ribonucleic acid (mRNA) expression of ERK1 and ERK2 in the MARK pathway. Western blotting was applied to examine the activation of the MAPK/ERK pathway and neuron-specific markers. The expression of neuron-specific enolase (NSE) was detected via immunofluorescence. Cell activity and apoptosis were measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and flow cytometry, respectively. RESULTS:The mRNA expressions of ERK1 and ERK2 in neural stem cells increased in a time-dependent manner after cerebral infarction in rats. The expressions of ERK1, ERK2, cyclin D1, Nestin, NSE and glial fibrillary acidic-protein (GFAP) in neural stem cells were significantly decreased after being treated with SCH772984. Cell activity, proliferation and differentiation were markedly inhibited. However, cleaved-caspase 3 protein and apoptosis rate were remarkably increased. CONCLUSIONS:The MAPK/ERK pathway seriously affects neurocyte apoptosis after cerebral infarction in rats. When the MAPK/ERK pathway is inhibited, neurocyte apoptosis is remarkably increased after cerebral infarction in rats.

authors

Wang QC,Lu L,Zhou HJ

doi

10.26355/eurrev_201906_18206

subject

Has Abstract

pub_date

2019-06-01 00:00:00

pages

5374-5381

issue

12

eissn

1128-3602

issn

2284-0729

journal_volume

23

pub_type

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