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3 Biotech

, 9:386 | Cite as

Elevated serum levels of brain-derived neurotrophic factor and miR-124 in acute ischemic stroke patients and the molecular mechanism

  • Jie Wang
  • Qiong Huang
  • Ji Ding
  • Xiaoping WangEmail author
Original Article
  • 74 Downloads

Abstract

Brain-derived neurotrophic factor (BDNF) and microRNAs (miRNAs) play a significant role in the pathogenesis of acute ischemic stroke (AIS). The present study investigates the elevated expression of BDNF and miR-124 in AIS patients. In the present study, serum samples from AIS patients and healthy controls were collected to determine the regulatory role and mechanism of operation of BDNF and to determine the regulatory miRNAs involved in AIS. Using bioinformatics analysis, we identified putative and regulatory miR-124. The effect of miR-124 on BDNF expression was examined in human neuronal cell lines. Moreover, the function of miR-124 in regulating BDNF was analyzed by assessing the serum level of BDNF in both AIS patients and healthy controls. The results indicate that the BDNF level of AIS patients is very low compared with that of controls. In contrast, real-time polymerase chain reaction (RT-PCR) data revealed a very high serum level of miR-124 in AIS patients relative to healthy individuals. The associations of the National Institutes of Health (NIH) stroke scale (NIHSS) score with BDNF and BDNF-related miR-124 serum levels were calculated using Pearson’s/Spearman’s correlation coefficient. The findings revealed a negative correlation between NIHSS score and BDNF level, whereas a positive correlation was observed between NIHSS score and miR-124. In addition, the relationship between serum BDNF and miR-124 was negative in AIS patients. In conclusion, this study provides strong evidence that serum BDNF and the BDNF-regulatory miR-124 may serve as molecular markers for AIS.

Keywords

Brain-derived neurotrophic factor Acute ischemic stroke miR-124 Human neuronal cell lines NIH NIHSS 

Notes

Acknowledgements

The authors acknowledge the Institution, Institutional Review Board and Ethics Committee for providing support and funding to carrying out this research.

Authors contribution

XPW is the corresponding of the manuscript, who planned and designed the experiments for the project. In addition, first draft of the manuscript was written by corresponding author along with JD Research work was carried out and executed equally by JW and QH In addition, part of the research experiments such as statistical analysis was carried out by JD.

Compliance with ethical standards

Conflict of interest

All authors declare that they have no conflict of interest.

Human and animal rights

This article includes human study and it was approved by the Institutional Ethical Review Board, Ethical Committee, and Research Advisory Committees of the affiliated hospital and research institute. Also, proper written consent was acquired from both the patients and the spectators before collecting samples.

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Copyright information

© King Abdulaziz City for Science and Technology 2019

Authors and Affiliations

  1. 1.Department of Neurology, Tong Ren HospitalShanghai Jiao Tong University School of MedicineShanghaiChina

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