Neonatal hypoxic-ischemia encephalopathy (HIE) refers to hypoxic-ischemic brain damage caused by perinatal asphyxia. Increasing evidence has revealed the crucial roles of microRNAs (miRNAs) in neonatal HIE. In the current research, we aimed to explore the biological role of miR-363-3p in neonatal HIE. For this purpose, we established in vitro models of PC-12 and SH-SY5Y cells subjected to oxygen-glucose deprivation and reperfusion (OGD/R) and an in vivo rat model subjected to middle cerebral artery occlusion/reperfusion (MCAO/R) treatment. First, using H&E staining, TTC staining, and western blot analysis, we observed that DUSP5 knockdown suppressed HIE in vivo. Then, by performing flow cytometric analysis, western blotting, RT-qPCR, and MTT assays, we observed that DUSP5 silencing suppressed OGD/R-induced cell injury in vitro. Subsequently, we explored the potential regulatory mechanism of DUSP5 in OGD/R-treated cells with luciferase reporter assays and RT-qPCR analysis. The results demonstrated that DUSP5 was targeted by miR-363-3p. Next, functional assays, including flow cytometric analysis, MTT assays, western blotting and RT-qPCR, were conducted to explore the biological functions of miR-363-3p in SH-SY5Y and PC-12 cells. Our data showed that miR-363-3p overexpression suppressed OGD/R-induced cell injury. Finally, the results from rescue experiments showed that enhanced DUSP5 expression counteracted the effect of miR-363-3p overexpression. In conclusion, our data suggested that miR-363-3p attenuates neonatal HIE by targeting DUSP5.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.neures.2021.03.003 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The impact of clinical seizures and adverse brain MRI patterns in neonates with hypoxic-ischemic encephalopathy and abnormal neurodevelopment.
Clinics (Sao Paulo)
January 2025
Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea. Electronic address:
Introduction: This study aimed to investigate the associations among seizures, clinical characteristics, and brain injury on Magnetic Resonance Imaging (MRI) in infants with Hypoxic Ischemic Encephalopathy (HIE), and to determine whether these findings can predict unfavorable neurodevelopmental outcomes.
Method: Clinical and electrographic seizures were assessed by amplitude-integrated electroencephalogram, and the extent of brain injury was evaluated by using MRI. At 12‒24 months of age, developmental impairment or death was assessed.
The American Clinical Neurophysiology Society Guideline on Indications for Continuous Electroencephalography Monitoring in Neonates.
J Clin Neurophysiol
January 2025
Department of Neurology, Washington University in St Louis, St. Louis, MO.
Purpose: Continuous EEG (cEEG) monitoring is increasingly used in the management of neonates with seizures. There remains debate on what clinically relevant information can be gained from cEEG in neonates with suspected seizures, at high risk for seizures, or with definite seizures, as well as the use of cEEG for prognosis in a variety of conditions. In this guideline, we address these questions using American Clinical Neurophysiology Society structured methodology for clinical guideline development.
View Article and Find Full Text PDFTherapeutic hypothermia in preterm infants under 36 weeks: Case series on outcomes and brain MRI findings.
Eur J Pediatr
January 2025
Neonatology Department. Hospital Sant Joan de Déu, Center for Maternal Fetal and Neonatal Medicine. Neonatal Brain Group, Universitat de Barcelona. Hospital Clínic, Universitat de Barcelona. BCNatal - Barcelona, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.
Purpose: Perinatal hypoxic-ischemic encephalopathy (HIE) is a significant cause of neonatal brain injury. Therapeutic hypothermia (TH) is the standard treatment for term neonates, but its safety and efficacy in neonates < 36 weeks gestational age (GA) remains unclear. This case series aimed to evaluate the outcomes of preterm infants with HIE treated with TH.
View Article and Find Full Text PDFThe Neuroprotective Effects of Caffeine in a Neonatal Hypoxia-Ischemia Model are Regulated through the AMPK/mTOR Pathway.
Int J Biol Sci
January 2025
Department of Neonatology and Pediatric Intensive Care, Children's Hospital University of Bonn, Bonn, Germany.
Article Synopsis
- Neonatal hypoxic-ischemic encephalopathy (HIE) is a leading cause of death and disability in newborns, and caffeine has shown promise in mitigating its effects.
- In a neonatal rat model, caffeine administration post-injury reduced brain damage and inflammation compared to controls, highlighting its potential benefits.
- The study found that caffeine influences the AMPK/mTOR pathway, suggesting that targeting this pathway could enhance neuroprotection and improve outcomes for HIE, especially in regions lacking sufficient resources for treatment.
Pediatric Neurosonography: Comprehensive Review and Systematic Approach.
Can Assoc Radiol J
December 2024
Department of Diagnostic and Intervention Radiology, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
Neurosonography (NSG) is pivotal for rapid, point-of-care neonatal brain assessment. This review elucidates the comprehensive applications of NSG in pediatric care, emphasizing its role in early diagnosis and management of pathologies affecting the pediatric head-such as scalp lesions, misshapen calvarium, ventricular distortions, and cerebrovascular abnormalities, and its specific role in conditions like hypoxic-ischaemic encephalopathy (HIE) across different neonatal gestational ages. We explore its diagnostic advantage in critical care settings, particularly for infants with stroke risk in sickle cell disease, ECMO-related complications, screening for therapeutic hypothermia, and routine neonatal intensive care unit monitoring.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!