Myofibroblast in the ligamentum flavum hypertrophic activity
In: European spine journal : official publication of the European Spine Society, Jg. 26 (2016-09-03), Heft 8
Online
unknown
Zugriff:
Majority of the previous studies compared lumbar spinal stenosis (LSS) and lumbar disc herniation (LDH) patients for analyses of LFH. However, the separation of normal/hypertrophied LF has often been ambiguous and the severity of hypertrophic activity differed. Here, we present a novel analysis scheme for LFH in which myofibroblast is proposed as a major etiological factor for LFH study. Seventy-one LF patient tissue samples were used for this study. Initially, mRNA levels of the samples were assessed by qRT-PCR: angiopoietin-like protein-2 (ANGPTL2), transforming growth factor-beta1 (TGF-β1), vascular endothelial growth factor (VEGF), interleukin-6, collagen-1, 3, 4, 5, and 11, and elastin. Myofibroblasts were detected by immune stain using α-smooth muscle actin (αSMA) as a marker. To study the myofibroblast in TGF-β pathway, LF tissues were analyzed for protein levels of αSMA/TGF-β1 by Western blot. In addition, from LF cells cultured with exogenous TGF-β1 conditioned medium, expression of αSMA/collagen-1 was assessed and the cell morphology was identified. The comparative analysis of mRNA expression levels (LSS vs LDH) failed to show significant differences in TGF-β1 (p = 0.08); however, we found a significant positive correlation among ANGPTL2, VEGF, TGF-β1, and collagen-1 and 3, which represent common trends in hypertrophic activity (p
Titel: |
Myofibroblast in the ligamentum flavum hypertrophic activity
|
---|---|
Autor/in / Beteiligte Person: | Tai Hyoung Cho ; Jung Yul Park ; Lee, Sunhye ; Kim, Kyoungmi ; Hur, Junseok W. ; Kim, Jin-Soo ; Hur, Junho K. ; Ye, Sunghyeok ; Bae, Taegeun ; Lee, Seung-Hwan ; Jang Bo Lee ; Joo Hyun Kim |
Link: | |
Zeitschrift: | European spine journal : official publication of the European Spine Society, Jg. 26 (2016-09-03), Heft 8 |
Veröffentlichung: | 2016 |
Medientyp: | unknown |
ISSN: | 1432-0932 (print) |
Schlagwort: |
|
Sonstiges: |
|