Regulatory role of microRNA‑320 during off‑pump coronary artery bypass grafting with dexmedetomidine adjunct anesthesia

Gao,Yan; Zhu,Xiaolong; Yu,Huidan; Wang,Wenlong; Wang,Yeming; Li,Fulong; Teng,Jinliang

doi:10.3892/etm.2021.10635

Regulatory role of microRNA‑320 during off‑pump coronary artery bypass grafting with dexmedetomidine adjunct anesthesia

Authors:
- Yan Gao
- Xiaolong Zhu
- Huidan Yu
- Wenlong Wang
- Yeming Wang
- Fulong Li
- Jinliang Teng
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Affiliations: Department of Anesthesiology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, P.R. China, Department of Medical Imaging, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, P.R. China, Department of Ultrasound, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, P.R. China, Operating Room, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, P.R. China, Department of Anesthesiology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei 075000, P.R. China
Published online on: August 23, 2021 https://doi.org/10.3892/etm.2021.10635
Article Number: 1201
Copyright: © Gao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The present study investigated the effects of dexmedetomidine on the expression level of microRNA‑320 (miR‑320) and neuroglobin (NGB) in patients undergoing off‑pump coronary artery bypass grafting (OPCABG). A total of 40 patients undergoing OPCABG were recruited and randomly divided into the dexmedetomidine and normal saline groups (treated before anesthesia), respectively. The NGB levels in the blood samples before and after surgery were analyzed and compared. The CATH.a cells were cultured and induced with dexmedetomidine, and the NGB expression level was detected. CATH.a cells were treated with NGB and lipopolysaccharide (LPS), and the cell survival rate was determined. The miR‑320 expression levels in the blood samples and dexmedetomidine‑induced cells were detected. Dual‑luciferase reporter assay was performed. Compared with control subjects, patients in the dexmedetomidine group had higher NGB levels in the blood. In the CATH.a cells, the dexmedetomidine treatment upregulated the NGB levels. Moreover, upon pre‑incubation with NGB and LPS stimulation, dexmedetomidine elevated cell viability. Furthermore, miR‑320 expression levels were significantly downregulated in the blood of patients in the dexmedetomidine group, as well as in the dexmedetomidine‑induced cells. Dual‑luciferase reporter assay confirmed that miRNA‑320a directly targeted on NGB, and upregulated miRNA‑320a in CATH.a cells decreased cell proliferation activity. Pre‑administration of dexmedetomidine can decrease miR‑320 expression level in the blood of patients undergoing OPCABG, stimulating the high expression of NGB and increasing the proliferation activity of neuronal cells, which may decrease the postoperative cognitive impairment.

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