ArticleJournal of molecular neuroscience : MN2021
Comprehensive Analysis of Age-related Changes in Lipid Metabolism and Myelin Sheath Formation in Sciatic Nerves.
Article in Journal of molecular neuroscience : MN, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 18 citations in OpenAlex.
- Peripheral Myelin Protein-22 and Its Prominence in Charcot-Marie-Tooth Disease.Chemical reviews · 2026Review
- Enhancing peripheral nerve regeneration in aging: the role of Schwann cells, c-Jun, and emerging therapeutic strategies.GeroScience · 2026Review
- Preserved fascicular architecture predicts neuroma pain: a morphometric study.Acta neuropathologica communications · 2025Article
- HAS-CIRCpedia-5280 sponges miR-4712-5p inhibited colon cancer autophagyinduced by human beta-defensin-1.Journal of translational medicine · 2025Article
- Monitoring Myelin Lipid Composition and the Structure of Myelinated Fibers Reveals a Maturation Delay in CMT1A.International journal of molecular sciences · 2024Article
- Deficiency of galactosyl-ceramidase in adult oligodendrocytes worsens disease severity during chronic experimental allergic encephalomyelitis.Molecular therapy : the journal of the American Society of Gene Therapy · 2024Article
- Long Non-coding RNAs Influence Aging Process of Sciatic Nerves in SD Rats.Combinatorial chemistry & high throughput screening · 2024Article
- Roles of Macrophages and Their Interactions with Schwann Cells After Peripheral Nerve Injury.Cellular and molecular neurobiology · 2023Review
- GDF11 slows excitatory neuronal senescence and brain ageing by repressing p21.Nature communications · 2023Article
- Research progress on the reduced neural repair ability of aging Schwann cells.Frontiers in cellular neuroscience · 2023Review
- Expression of Protein Acetylation Regulators During Peripheral Nerve Development, Injury, and Regeneration.Frontiers in molecular neuroscience · 2022Article
- Interactions Among Nerve Regeneration, Angiogenesis, and the Immune Response Immediately After Sciatic Nerve Crush Injury in Sprague-Dawley Rats.Frontiers in cellular neuroscience · 2021Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
To investigate the molecular changes related to myelin formation and lipid metabolism in the sciatic nerve in Sprague Dawley (SD) rats during aging. Thirty-six healthy male SD rats were divided into five groups according to age: 1 week, 1 month, 6 months, 12 months, and 24 months. Sciatic nerves were collected from 1-month-old and 24-month-old SD rats (n = 3) to perform next-generation sequencing (NGS) and bioinformatics analysis. Specimens from each group were harvested and analyzed by qPCR, Western blotting, and transmission electron microscopy (TEM). Protein-protein interaction (PPI) networks of differentially expressed mRNAs (DEmRNAs) related to myelin and lipid metabolism were constructed. DEmRNAs in subnetworks were verified using qPCR. A total of 4580 DEmRNAs were found during aging. The top enriched GO biological processes were primarily clustered in cholesterol and lipid metabolism, including the cholesterol biosynthetic process (RF = 3.16), sterol biosynthetic process (RF = 3.03), cholesterol metabolic process (RF = 2.15), sterol metabolic process (RF = 2.11), fatty acid biosynthetic process (RF = 2.09), and lipid biosynthetic process (RF = 1.79). The mRNA levels of MBP, PMP22, and MPZ were downregulated during aging, while the protein expression of MBP showed an increasing trend. The TEM results showed thin myelin sheaths and an increased number of unmyelinated axons in the 1-week-old rats, and the sheaths became thickened with degenerated axons appearing in older animals. Forty PPI subnetworks related to lipid metabolism were constructed, including one primary subnetwork and two smaller subnetworks. The hub genes were mTOR in sub-network 1, Akt1 in sub-network 2, and SIRT1 in sub-network 3. No gene expression was found consistent with the sequencing results, while in the downregulated genes, AKT1, CEBPA, LIPE, LRP5, PHB, and Rara were significantly downregulated in 24-month-old rats. Lipid metabolism might play an important role in maintaining the structure and physiological function in sciatic nerves during aging and could be candidates for nerve aging research.
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