ArticleBMC musculoskeletal disorders2019
The expression of P16 and S100 associated with elastin degradation and fibrosis of the Ligamentum Flavum hypertrophy.
Article in BMC musculoskeletal disorders, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 13 citations in OpenAlex.
- An in vivo model of ligamentum flavum hypertrophy from early-stage inflammation to fibrosis.JOR spine · 2023Article
- Characterization of ligamentum flavum hypertrophy based on m6A RNA methylation modification and the immune microenvironment.American journal of translational research · 2022Article
- Fast Independent Component Analysis Algorithm-Based Diagnosis of L5 Nerve Root Compression and Changes of Brain Functional Areas Using 3D Functional Magnetic Resonance Imaging.Journal of healthcare engineering · 2021Article
- The correlation between imaging expression of P16 and S100 in hypertrophic ligamentum flavum.BMC musculoskeletal disorders · 2020Article
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5 authors at 1 institution in 1 country.
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Abstract
backgroundOne of the characteristics of lumbar spinal stenosis (LSS) is elastin degradation and fibrosis in the ligamentum flavum (LF). However, the biochemical factors that cause these histologic changes is unclear. P16 and S100 participate in scar formation and collagen development in wound healing and fibrosis diseases. In this study, we investigate the association between P16 and S100 expression and the fibrosis of the hypertrophic LF in LSS.
methodsThe LF specimens were surgically obtained from 30 patients with single-segment LSS (SLSS), 30 patients with double-segment LSS (DLSS) and 30 patients with L4/5 lumbar disc herniation (LDH). The LF thickness was measured by axial T1-weighted MRI. The extent of LF elastin degradation and fibrosis were graded based on hematoxylin-eosin (HE) and Verhoff's Van Gieson's (VVG) stain, respectively. The localization of P16 and S100 was determined by immunohistochemistry.
resultsThe Absolute and relative LF thickness were greater in the DLSS group compared with the SLSS and LDH groups (p < 0.05). The elastic tissue from the dorsal aspect to the dural aspect in SLSS and DLSS groups was significantly increased. The amount of collagen deposition and elastic tissue is significantly higher in the DLSS group compared with the SLSS and LDH groups (p < 0.05). The specimens in the DLSS group showed positive staining of P16, especially in the dorsal layer. Almost all samples in the SLSS group were partially positive for P16. The LDH group showed negative staining of P16 in both the dural and dorsal layers. All the three groups were stained with S100 in the dorsal layer of the LF. On the contrary, S100 staining was absent in the dural layer of the LF in the three groups.
conclusionsElastin degradation and fibrosis of the LF in the DLSS patients is more severe compared with the SLSS and LDH patients. Increased expression of P16 associated with LF fibrosis and thickness, suggested that the expression of P16 may related to LF hypertrophy in the patients who suffer with LSS. LF hypertrophy process may not be associated with high expression of S100.
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