AI Article Synopsis
Article Abstract
The contribution of microglial activation to preoligodendroglial (preOL) damage in the central nervous system (CNS) is considered to be one of the principal causes of periventricular leukomalacia (PVL) pathogenesis. The present study explores the effect of diphenyleneiodonium (DPI), a NADPH oxidase (NOX) inhibitor, on protection of preOLs from bacterial lipopolysaccharide (LPS)-induced microglial toxicity in vivo and in vitro. In vitro, preOLs co-cultured with microglia exhibited increased preOL apoptosis, accompanied by overproduction of superoxide anion (O(2)(-)) and the formation of peroxynitrite (ONOO(-)) after LPS exposure. LPS also significantly up-regulated accumulation of activated microglial NOX subunits p67-phox and gp91-phox in the plasma membrane. Diphenyleneiodonium (DPI) (10μm) was found to significantly attenuate up-regulation of this NOX activity. In vivo, DPI was administered (1mg/kg/day) by subcutaneous injection for 3 days to two-day-old neonatal Sprague-Dawley rats subjected to intracerebral injection of LPS. Treatment with DPI within 24h of LPS injection significantly ameliorated white matter injury, decreasing preOL loss, O(2)(-) generation, and ONOO(-) formation, and inhibiting p67-phox, gp91-phox synthesis and p67phox membrane translocation in microglia. These results indicated that LPS-induced preOL apoptosis may have been mediated by microglia-derived ONOO(-). DPI prevented this LPS-induced brain injury, most likely by inhibiting ONOO(-) formation via NOX, thereby preventing preOL loss and immature white matter injury.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.brainres.2012.11.017 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Neonatal outcomes between trial of labor and cesarean delivery for extreme preterm infants.
Int J Gynaecol Obstet
December 2024
Lis Hospital for Women's Health, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
Objective: To compare adverse neonatal outcomes between trial of vaginal delivery and upfront cesarean delivery for singleton infants born at 24 to 28 weeks of gestation.
Methods: This is a retrospective cohort study that was conducted at a university-affiliated tertiary medical center between 2011 and 2022, involving singleton pregnancies delivered between 24 and 27 weeks of gestation. Participants were divided into two groups based on their intended mode of delivery: a trial of labor (TOL) group and an upfront cesarean delivery (CD) group.
Survival Rate and Short-Term Outcomes of Periviable Preterm Infants: A Single-Center Experience From the United Arab Emirates.
Cureus
November 2024
Pediatrics and Neonatology, Tawam Hospital, Al Ain, ARE.
The limit of periviability is constantly changing as infants born at 22-25 weeks of gestation increasingly survive. The data from our region are limited due to the small numbers of these infants among the NICU population. In this study, we evaluated the survival rates and short-term outcomes among preterm neonates between 22 and 24 weeks of gestation admitted to Tawam Hospital, United Arab Emirates.
View Article and Find Full Text PDFIdentification of CSPG4 as a Biomarker and Therapeutic Target for Infantile Post-Hemorrhagic Hydrocephalus via Multi-Omics Analysis.
Adv Sci (Weinh)
December 2024
Department of Neonatology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, China.
Intraventricular hemorrhage in preterm neonates has become a major global health problem and is associated with a high risk of post-hemorrhagic hydrocephalus (PHH). Identifying diagnostic markers and therapeutic targets is a focal challenge in the PHH prevention and control. Here, this study applies multi-omics analyses to characterize the biochemical, proteomic, and metabolomic profiles of the cerebrospinal fluid (CSF) in clinical human cohorts to investigate disease development and recovery processes occurring due to PHH.
View Article and Find Full Text PDFCOL4A2-Related Disorder Presenting in Adulthood With Rhabdomyolysis.
Am J Med Genet A
December 2024
Department of Clinical Genomics, Mayo Clinic, Scottsdale, Arizona, USA.
The alpha 1 and 2 chains of type IV collagen, encoded by the COL4A1 (MIM 120130) and COL4A2 (MIM 120090) respectively, play essential roles in the vascular basement membranes. Pathogenic variants in COL4A1/ COL4A2 are associated with autosomal dominant cerebral angiopathies. The clinical manifestations of COL4A1/COL4A2-related disorders include: aneurysms, intracerebral hemorrhage, polymicrogyria, porencephaly, heterotopia, periventricular leukomalacia, epilepsy, and neurodevelopmental disorders.
View Article and Find Full Text PDFNeonatal intracranial pathologies on ultrasound imaging in sub-Saharan Africa: a systematic review and meta-analysis.
Pediatr Res
December 2024
Neonatal Medicine, University College London EGA Institute for Women's Health, London, UK.
Annually, 30 million children are affected by newborn conditions, most in low-income countries, with long-term implications for survivors. We aimed to evaluate neonatal intracranial pathologies identifiable on cranial ultrasound (CUS) in sub-Saharan Africa (SSA). This systematic review and meta-analysis explored the spectrum of neonatal intracranial pathology, in nine databases, using the Joanna Briggs Institute Systematic Review Tools.
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!