ArticleStem cells translational medicine2026
Human umbilical cord mesenchymal stem cells alleviate brain injury and promote neuroregeneration via BDNF/TrkB/CREB/PI3K-Akt pathway in preterm rats with intraventricular hemorrhage.
Article in Stem cells translational medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo explore the neuroprotective effect and molecular mechanism of human umbilical cord mesenchymal stem cells (hUC-MSCs) in preterm rats with intraventricular hemorrhage (IVH), and provide experimental basis for clinical treatment of neonatal IVH.
methodsTissue block adherence method was used to isolate and culture hUC-MSCs, and P4 Sprague-Dawley premature rats were divided into sham, IVH model, and hUC-MSC treatment groups. Collagenase VIIS was injected to establish IVH model, and hUC-MSCs were injected into lateral ventricles. Cell colonization, body weight, neurobehavior, brain histology, apoptosis, and related molecular indicators were detected via fluorescence tracking, behavioral tests, staining, RT-PCR, Western blot (WB), and ELISA. Bioinformatics combined with ANA12 blocking assay verified core pathways.
resultshUC-MSCs survived in rat brain for at least 7 days. Compared with the model group, the treatment group gained weight faster, neurobehavioral function was markedly improved, neuronal apoptosis decreased sharply, and brain tissue damage was alleviated. hUC-MSCs up-regulated anti-apoptotic, anti-inflammatory, antioxidant and neurogenesis-related molecules and activated BDNF/TrkB/CREB/PI3K-Akt pathway; TrkB blockade reversed all protective effects.
conclusionhUC-MSCs exert multi-target neuroprotection by activating BDNF/TrkB/CREB/PI3K-Akt pathway, which offers a novel strategy for IVH treatment in preterm infants.
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