Young Plasma Reverses Cognitive Impairment in Aged Rats After Anesthesia and Surgery

Published on September 6, 2022

Imagine you’re an old car that’s been through a lot of wear and tear. You’ve had some surgeries, maybe a few dings and dents. But then, along comes a young, fresh engine that restores your power! That’s what happened to aged rats in this study. Researchers found that when aged rats received infusions of young plasma before undergoing anesthesia and surgery, their cognitive impairment was significantly reduced. It’s like giving those cars a new lease on life and getting them running smoothly again!

The researchers delved deep into the mechanisms behind this cognitive improvement, using fancy techniques like bioinformatics, gene analysis, and electron microscopy. They discovered that the young plasma treatment activated a signaling pathway called TrkB/ERK/CREB, which is involved in learning and memory. In addition, the treatment improved synaptic plasticity in the hippocampus – the brain region crucial for memory formation.

So if you’re feeling like your mental horsepower isn’t what it used to be, hang on! This study suggests that young plasma could potentially have a restorative effect on age-related cognitive decline. Just like giving an old car a tune-up can bring back its pep and performance, young plasma might just give your brain a boost! If you want to learn more about the fascinating research behind this, don’t hesitate to check out the full article!

We investigated the protective effect of young plasma on anesthesia- and surgery-induced cognitive impairment and the potential underlying mechanism using bioinformatics, functional enrichment analysis, gene set enrichment analysis, Golgi-Cox staining, dendritic spine analysis, immunofluorescence assay, western blot analysis, and transmission electron microscopy. Furthermore, we performed behavioral assessments using the open field test, the novel object recognition test, and the Morris water maze test. We identified 1969 differentially expressed genes induced by young plasma treatment, including 800 upregulated genes and 1169 downregulated genes, highlighting several enriched biological processes (signal release from synapse, postsynaptic density and neuron to neuron synapse). Anesthesia- and surgery-induced cognitive impairment in aged rats was comparatively less severe following young plasma preinfusion. In addition, the decreased levels of synapse-related and tyrosine kinase B/extracellular signal-regulated protein kinase/cyclic adenosine monophosphate response element-binding protein (TrkB/ERK/CREB) signaling pathway-related proteins, dendritic and spine deficits, and ultrastructural changes were ameliorated in aged mice following young plasma preinfusion. Together, these findings suggest that young plasma reverses anesthesia- and surgery-induced cognitive impairment in aged rats and that the mechanism is associated with the activation of the TrkB/ERK/CREB signaling pathway and improvement in hippocampal synaptic plasticity.

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