Temporospatial expression of fibulin-1 after acute spinal cord injury in rats.
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Fibulin-1 is a matricellular protein that plays important roles in motility inhibition in a variety of cells and blocks the proliferation of cultured neural stem cells. The biological function of fibulin-1 in the spinal cord has not been fully elucidated. To clarify the expressions and possible functions of fibulin-1 in spinal cord injury (SCI), we performed an acute spinal cord contusion injury model in adult rats. Our work studied the temporospatial expression patterns of fibulin-1. Western blot analysis revealed that fibulin-1 levels significantly increased 5 days after spinal cord contusion. Immunohistochemistry confirmed an increased number of fibulin-1 immunopositive cells about 2 mm from the lesion site. Moreover, double immunofluorescence labeling suggested that these changes were especially prominent in neurons and microglia. These findings suggest that fibulin-1 may be involved in neuronal apoptosis and microglial activation after SCI.


Spatial Gene Expression
Glial proliferation
Neuron apoptosis
Spinal cord injury

MeSH terms

Calcium-Binding Proteins
Organ Specificity
Rats, Sprague-Dawley
Spinal Cord
Spinal Cord Injuries


Xu, Guanhua
Cui, Ying
Wang, Lingling
Zhang, Jinlong
Shen, Aiguo
Li, Weidong
Bao, Guofeng
Sun, Yuyu
Cui, Zhiming

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