Abstract:
INTRODUCTION:Brain-derived neurotrophic factor (BDNF) was first identified in the intervertebral disc (IVD) when its molecular upregulation was observed in sections of nucleus pulposus cultured under conditions of increased osmolarity. BDNF is now known to be involved in a number of biologic functions, including regulation of differentiation/survival of sensory neurons, regulation of nociceptive function and central pain modulation, and modulation of inflammatory pain hypersensitivity. In addition, more recent investigations show that BDNF can induce the recruitment of endothelial cells and the formation of vascular structures. The objectives of the present study were to use immunocytochemistry to determine the distribution of BDNF and its receptor (BDNF-tropomyosine receptor kinase B) in the human IVD, and to test for gene expression of BDNF and its receptor in cultured human annulus fibrosus cells. METHODS:We studied immunohistochemical localization of BDNF and its receptor in the human annulus, quantified the percentage of outer annulus and inner annulus cells and nucleus cells positive for BDNF immunolocalization, and studied the gene expression of BDNF and its receptor using microarray analysis. RESULTS:The percentage (mean +/- standard error of the mean) of cells positive for BDNF localization was significantly greater in the outer annulus (32.3 +/- 2.7%, n = 22) compared with either the inner annulus (8.1 +/- 1.5%, n = 6) or the nucleus (10.4 +/- 2.8%, n = 3) (P < 0.0001). BDNF-receptor immunolocalization showed a pattern similar to that of BDNF, but was not quantitatively assessed. BDNF gene expression levels from cultured annulus cells showed a significant positive correlation with increasing levels of IVD degeneration (P = 0.011). CONCLUSION:These findings provide data on the presence of BDNF and its receptor in the human IVD at the translational level, and on the expression of BDNF and its receptor by cultured human annulus cells. Our findings point to the need for further studies to define the role of BDNF in the human IVD and to investigate regulatory events within the disc that control the expression of BDNF and its receptor.
journal_name
Arthritis Res Therjournal_title
Arthritis research & therapyauthors
Gruber HE,Ingram JA,Hoelscher G,Zinchenko N,Norton HJ,Hanley EN Jrdoi
10.1186/ar2456subject
Has Abstractpub_date
2008-01-01 00:00:00pages
R82issue
4eissn
1478-6354issn
1478-6362pii
ar2456journal_volume
10pub_type
杂志文章abstract::Platelet-rich plasma (PRP) is an autologous concentrated cocktail of growth factors and inflammatory mediators, and has been considered to be potentially effective for cartilage repair. In addition, the fibrinogen in PRP may be activated to form a fibrin matrix to fill cartilage lesions, fulfilling the initial require...
journal_title:Arthritis research & therapy
pub_type: 杂志文章,评审
doi:10.1186/ar4493
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
pub_type: 临床试验,杂志文章,多中心研究
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
pub_type: 杂志文章,多中心研究
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
pub_type: 评论,社论
doi:10.1186/ar3008
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journal_title:Arthritis research & therapy
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doi:10.1186/ar3342
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
pub_type: 杂志文章
doi:10.1186/s13075-017-1332-y
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
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journal_title:Arthritis research & therapy
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pub_type: 杂志文章,评审
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journal_title:Arthritis research & therapy
pub_type: 杂志文章
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更新日期:2005-01-01 00:00:00
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journal_title:Arthritis research & therapy
pub_type: 杂志文章,随机对照试验
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更新日期:2017-09-29 00:00:00
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journal_title:Arthritis research & therapy
pub_type: 杂志文章
doi:10.1186/s13075-020-02365-y
更新日期:2020-12-10 00:00:00
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journal_title:Arthritis research & therapy
pub_type: 评论,社论
doi:10.1186/ar4572
更新日期:2014-05-30 00:00:00
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journal_title:Arthritis research & therapy
pub_type: 评论,社论,评审
doi:10.1186/ar3175
更新日期:2010-01-01 00:00:00
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journal_title:Arthritis research & therapy
pub_type: 评论,社论
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journal_title:Arthritis research & therapy
pub_type: 杂志文章
doi:10.1186/ar2611
更新日期:2009-01-01 00:00:00
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journal_title:Arthritis research & therapy
pub_type: 杂志文章
doi:10.1186/s13075-016-1013-2
更新日期:2016-05-21 00:00:00
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journal_title:Arthritis research & therapy
pub_type: 杂志文章
doi:10.1186/s13075-017-1220-5
更新日期:2017-02-02 00:00:00