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Upregulated Expression of Ebp1 Contributes to Schwann Cell Differentiation and Migration After Sciatic Nerve Crush
Abstract Ebp1, an ErbB3-binding protein, is the human homologue of the cell cycle-regulated mouse protein p38-2G4. Ebp1 was reported to inhibit the proliferation and induce the differentiation of human cancer cells. Its p48 isoform contributes to neuronal differentiation and growth factor specificity. However, the expression and role of Ebp1 in peripheral system lesions and repair are still unknown. Herein, we investigated the spatiotemporal pattern of Ebp1 expression following sciatic nerve crush. After crush, the level of Ebp1 protein was elevated gradually, peaked at day 5, and then declined to the normal at ...
Source: Journal of Molecular Neuroscience - November 27, 2014 Category: Neuroscience Source Type: research

miR-134 Regulates Ischemia/Reperfusion Injury-Induced Neuronal Cell Death by Regulating CREB Signaling
Abstract microRNA-134 (miR-134) has been reported to be a brain-specific miRNA and is differently expressed in brain tissues subjected to ischemic injury. However, the underlying mechanism of miR-134 in regulating cerebral ischemic injury remains poorly understood. The current study was designed to delineate the molecular basis of miR-134 in regulating cerebral ischemic injury. Using the oxygen-glucose deprivation (OGD) model of hippocampal neuron ischemia in vitro, we found that the overexpression of miR-134 mediated by recombinant adeno-associated virus (AAV) vector infection significantly promoted neuron death ...
Source: Journal of Molecular Neuroscience - October 16, 2014 Category: Neuroscience Source Type: research

Induction of Matrix Metalloproteinase-3 (MMP-3) Expression in the Microglia by Lipopolysaccharide (LPS) via Upregulation of Glycoprotein Nonmetastatic Melanoma B (GPNMB) Expression
In this study, we used RT-PCR and Western blotting to detect GPNMB and matrix metalloproteinase-3 (MMP-3) expressions in activated microglia. GPNMB small interfering RNA (siRNA) or MMP-3 inhibitor was applied on microglial BV2 cells, and ELISA was performed to measure the expressions of TNF-α and IL-1β in BV2 cells. Levels of iNOS and NO in BV2 cells were also determined. We found that the levels of GPNMB and MMP-3 were significantly increased in BV2 cells after LPS treatment. Moreover, we found that GPNMB significantly upregulated the expression of MMP-3 in BV2 cells, and high expression of MMP-3 was dependent on the le...
Source: Journal of Molecular Neuroscience - October 1, 2014 Category: Neuroscience Source Type: research

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