Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (24): 4495-4501.doi: 10.3969/j.issn.2095-4344.2013.24.018

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Transforming growth factor-beta 1 expression in the degenerative intervertebral disc

Dai Qi-yu, Yang Ting-tong, Yu Fang-fang, Wang Quan-zhi, Wang Yuan, Zhang Xiao-shuang   

  1. The 371 Central Hospital of PLA, Xinxiang 453000, Henan Province, China
  • Received:2012-10-25 Revised:2012-11-21 Online:2013-06-11 Published:2013-06-11
  • Contact: Yang Ting-tong, Professor, Master’s supervisor, the 371 Central Hospital of PLA, Xinxiang 453000, Henan Province, China yangtt@xxmu.edu.cn
  • About author:Dai Qi-yu, Master’s supervisor, Chief technician, the 371 Central Hospital of PLA, Xinxiang 453000, Henan Province, China DQY716@sohu.com

Abstract:

BACKGROUND: Transforming growth factor-β1 can promote the proliferation and differentiation of intervertebral disc cells, and participate in the repair process after injury. However, whether transforming growth factor-β1 is involved in the intervertebral disc degeneration remains unclear.
OBJECTIVE: To analyze the expression of transforming growth factor-β1 in the degenerative intervertebral disc tissues, and to study the correlation between transforming growth factor-β1 and intervertebral disc degeneration.
METHODS: Normal intervertebral disc tissues collected from 30 cases and degenerative intervertebral disc tissues collected from 530 cases were researched by hematoxylin-eosin staining, western blot assay and reverse transcription-polymerase chain reaction. The degenerative intervertebral disc tissues were classified in histopathology, and transforming growth factor-β1 expression in different intervertebral disc degeneration tissues was analyzed and compared with that in normal tissues.
RESULTS AND CONCLUSION: Pathological diagnose by hematoxylin-eosin staining showed that, degenerative intervertebral disc tissues were classified into 4 pathological grades. Western blot and reverse transcription-PCR showed positive expressions of transforming growth factor-β1 in both normal and degenerative intervertebral disc tissues, however, transforming growth factor-β1 expression levels increased as degenerative changes and showed significant differences between degenerative and normal tissues(P < 0.01). Overexpression of transforming growth factor-β1 is positively correlated with intervertebral disc degeneration in human.

Key words:  tissue construction, tissue construction and bioactive factors, intervertebral disc degeneration, transforming growth factor-beta 1, nucleus pulposus cells, signal pathway, intervertebral disc tissue, intervertebral disc repair, gene expression, gene level, gene therapy, pathomorphology

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