ArticleFluids and barriers of the CNS2025
Transcriptomic and histological characteristics of innate immune activation in brain parenchyma in a rat model of neonatal intraventricular hemorrhage.
Article in Fluids and barriers of the CNS, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Bulbophyllum drymoglossum aqueous extract modulates immunometabolism and oxidative stress in porcine alveolar macrophages.Animal bioscience · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
Abstract
backgroundIntraventricular hemorrhage (IVH) remains a major complication in preterm infants with lifelong sequelae. There is no effective treatment for IVH other than supportive care and surgery for post-hemorrhagic hydrocephalus. We previously reported that the innate neuroimmune response in an animal model of IVH was dependent on developmental stage, only occurring in older animals.
methodsThis study utilized a lysed-blood injection model of IVH in rats. This model specifically captures the effects of blood products released by IVH on brain parenchyma. We performed RNAseq and differential gene expression analysis on CD11b/c-positive cells in the brain (microglia/macrophages) to define gene expression in innate immune cells after IVH. We examined CD68 expression, a marker of activated microglia/infiltrating macrophages, in the periventricular white matter after IVH over 90 days. Using IBA1 staining with skeletonized branch analysis and secondary individual cell Sholl analysis, we characterized morphological changes in innate immune cells after IVH. Glial fibrillary protein (GFAP) staining was used to assess astrogliosis and chronic glial scar formation after IVH. We also examined CD68 expression in brain samples from human infants with or without IVH.
resultsRNAseq of isolated innate immune cells showed significant differences in cytokine-mediated gene expression at 24 h in IVH versus control animals. CD68 expression in white matter decreased overall with time and was elevated at 7 days in the IVH group compared to controls. IBA1 labeling, when analyzed across all time points, showed significant changes to microglial/macrophage branch number, branch area, and soma area after IVH. Sholl analysis of individual IBA1 labeled cells showed an effect of time but not IVH on microglial/macrophage morphology. At the chronic timepoint of 90 days, IVH induced astrogliosis at the margin of the lateral ventricle. A brain sample from a human infant with IVH showed increased CD68 expression throughout the occipital cortex compared with a non-IVH control, indicating immune activation in brain parenchyma after IVH.
conclusionsIntraventricular blood products induce a robust innate immune response shortly after injection. RNAseq and CD68 counts are more sensitive to differences between groups than morphological immune cell analysis. Gliosis at the edge of ependyma occurs over time. These results help establish the timeline of inflammation after IVH to better define the window for treating IVH-associated inflammation and subsequent brain injury.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.