Suppression of microRNA-9-5p rescues learning and memory in chronic cerebral hypoperfusion rats model
| Autor: | Shengli Ma, Kui-Sheng Chen, Rui Xue, Huayan Ren, Wei-Wei Wang, Huang Huifen, Na Wei, Kai Zheng, Jingjing Xu |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Dendritic spine Vascular disease business.industry Hippocampus Morris water navigation task Long-term potentiation medicine.disease medicine.disease_cause miR-9-5p memory 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Oncology microRNA medicine Cholinergic business chronic cerebral hypoperfusion Neuroscience long-term potentiation 030217 neurology & neurosurgery Oxidative stress Research Paper |
| Zdroj: | Oncotarget |
| ISSN: | 1949-2553 |
| Popis: | Chronic cerebral hypoperfusion has been associated with cognitive impairment in dementias, such as Alzheimer's disease (AD) and vascular disease (VaD), the two most common neurodegenerative diseases in aged people. However, the effective therapeutic approaches for both AD and VaD are still missing. MicroRNAs (miRNAs) are small non-coding RNAs that play important roles in the epigenetic regulation in many neurological disorders; the critical roles of miRNAderegulation had been implicated in both AD and VaD. In the current study, we reported that miR-9-5p is elevated in the serum and cerebrospinalfluid of patientswith VaD. The miR-9-5p wasalso increased in both the hippocampus and cortex of rats with 2-vessel occlusionsurgery. Furthermore, application ofmiR-9-5p antagomirs attenuated the memory impairments in rats with 2-vessel occlusion surgery both in the Morris water maze and inhibitory avoidance step-down tasks. Furthermore, miR-9-5p antagomirs reducedthe inhibition oflong-term potentiation and loss of dendritic spines in chronic cerebral hypoperfusionrats. Additionally, the cholinergic neuronal function was rescued by miR-9-5p antagomirs, as well as the neuronal loss and the oxidative stress. We concluded that miR-9-5p inhibition may be a potential therapeutic target for the memory impairments caused by chronic cerebral hypoperfusion. |
| Databáze: | OpenAIRE |
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