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Liu JX, Fang CL, Zhang K, Ma RF, Zhou HS, Chen L, Wang QL, Lu YX, Wang TH, Xiong LL. Transcranial Doppler Ultrasonography detection on cerebrovascular flow for evaluating neonatal hypoxic-ischemic encephalopathy modeling. Front Neurosci 2023; 17:962001. [PMID: 37250420 PMCID: PMC10213400 DOI: 10.3389/fnins.2023.962001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 01/18/2023] [Indexed: 05/31/2023] Open
Abstract
Objective This study aimed to investigate the feasibility of Transcranial Doppler Ultrasonography (TCD) in evaluating neonatal hypoxic-ischemic encephalopathy (NHIE) modeling through monitoring the alteration of cerebrovascular flow in neonatal hypoxic-ischemic (HI) rats. Methods Postnatal 7-day-old Sprague Dawley (SD) rats were divided into the control group, HI group, and hypoxia (H) group. TCD was applied to assess the changes of cerebral blood vessels, cerebrovascular flow velocity, and heart rate (HR) in sagittal and coronal sections at 1, 2, 3, and 7 days after the operation. For accuracy, cerebral infarct of rats was examined by 2,3,5-Triphenyl tetrazolium chloride (TTC) staining and Nissl staining to simultaneously verify the establishment of NHIE modeling. Results Coronal and sagittal TCD scans revealed obvious alteration of cerebrovascular flow in main cerebral vessels. Obvious cerebrovascular back-flow was observed in anterior cerebral artery (ACA), basilar artery (BA), middle cerebral artery (MCA) of HI rats, along with accelerated cerebrovascular flows in the left internal carotid artery (ICA-L) and BA, decreased flows in right internal carotid artery (ICA-R) relative to those in the H and control groups. The alterations of cerebral blood flows in neonatal HI rats indicated successful ligation of right common carotid artery. Besides, TTC staining further validated the cerebral infarct was indeed caused due to ligation-induced insufficient blood supply. Damage to nervous tissues was also revealed by Nissl staining. Conclusion Cerebral blood flow assessment by TCD in neonatal HI rats contributed to cerebrovascular abnormalities observed in a real-time and non-invasive way. The present study elicits the potentials to utilize TCD as an effective means for monitoring the progression of injury as well as NHIE modeling. The abnormal appearance of cerebral blood flow is also beneficial to the early warning and effective detection in clinical practice.
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Affiliation(s)
- Jin-Xiang Liu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- Laboratory Animal Department, Kunming Medical University, Kunming, China
| | - Chang-Le Fang
- Laboratory Animal Department, Kunming Medical University, Kunming, China
- School of Anesthesiology, Southwest Medical University, Luzhou, China
| | - Kun Zhang
- Shantou Ultrasonic Instrument Research Institute Co., Ltd., Shantou, Guangdong, China
| | - Rui-Fang Ma
- Laboratory Animal Department, Kunming Medical University, Kunming, China
| | - Hong-Su Zhou
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Li Chen
- Institute of Neurological Disease, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, China
| | - Qiu-Lin Wang
- Department of Clinical Medicine, Chongqing Medical University, Chongqing, China
| | - Yu-Xuan Lu
- School of Anesthesiology, Southwest Medical University, Luzhou, China
| | - Ting-Hua Wang
- Laboratory Animal Department, Kunming Medical University, Kunming, China
- Institute of Neurological Disease, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, China
| | - Liu-Lin Xiong
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming University of Science and Technology, Kunming, China
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