Abstract:
BACKGROUND:The Ras/Raf/ERK1/2 signaling pathway controls many cellular responses such as cell proliferation, migration, differentiation, and death. In the nervous system, emerging evidence also points to a death-promoting role for ERK1/2 in both in vitro and in vivo models of neuronal death. To further investigate how Ras/Raf/ERK1/2 up-regulation may lead to the development of spinal cord injury, we developed a cellular model of Raf/ERK up-regulation by overexpressing c-Raf in cultured spinal cord neurons (SCNs) and dorsal root ganglions (DRGs). METHODS:DRGs and SCNs were prepared from C57BL/6J mouse pups. DRGs or SCNs were infected with Ad-Raf-1 or Ad-Null adenovirus alone. Cell adhesion assay and cell migration assay were investigated, DiI labeling was employed to examine the effect of the up-regulation of Ras/Raf/ERK1/2 signaling on the dendritic formation of spinal neurons. We used the TO-PRO-3 staining to examine the apoptotic effect of c-Raf on DRGs or SCNs. The effect on the synapse formation of neurons was measured by using immunofluorescence. RESULTS:We found that Raf/ERK up-regulation stimulates the migration of both SCNs and DRGs, and impairs the formation of excitatory synapses in SCNs. In addition, we found that Raf/ERK up-regulation inhibits the development of mature dendritic spines in SCNs. Investigating the possible mechanisms through which Raf/ERK up-regulation affects the excitatory synapse formation and dendritic spine development, we discovered that Raf/ERK up-regulation suppresses the development and maturation of SCNs. CONCLUSION:The up-regulation of the Raf/ERK signaling pathway may contribute to the pathogenesis of spinal cord injury through both its impairment of the SCN development and causing neural circuit imbalances.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Cao FJ,Zhang X,Liu T,Li XW,Malik M,Feng SQsubject
Has Abstractpub_date
2013-10-01 00:00:00pages
3879-85issue
20eissn
0366-6999issn
2542-5641journal_volume
126pub_type
杂志文章abstract:BACKGROUND:Liver transplantation is the most effective treatment for end-stage liver diseases; however, infections after transplantation can seriously affect the patient's health. The aim of this research was to investigate the diagnosis and treatment of fungal infection following liver transplantation. METHODS:Clinic...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-04-01 00:00:00
abstract:OBJECTIVE:To evaluate the effect of preoperative transcatheter arterial chemoembolization(TACE) on apoptosis of hepatocellular carcinoma (HCC) cells. METHODS:A total of 136 patients with HCC underwent liver resection. One to five courses of TACE prior to liver resection were performed in 79 patients (TACE group), in w...
journal_title:Chinese medical journal
pub_type: 杂志文章
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更新日期:2003-02-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2013-01-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,评审
doi:
更新日期:2012-06-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,评审
doi:
更新日期:1997-11-01 00:00:00
abstract::The effects of low-dose estrogen and progestogen on menopausal symptoms were studied with Kuppermen score and urinary excretion of calcium as fasting morning urine Ca/Cr ratio in 69 perimenopausal women. The subjects were divided into 3 groups: amenorrhea less than 1 year (14 women); post menopause 1-3 years (19); and...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1990-08-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,评审
doi:10.1097/CM9.0000000000000038
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journal_title:Chinese medical journal
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doi:
更新日期:2010-09-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,评审
doi:10.4103/0366-6999.163400
更新日期:2015-09-05 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2009-03-20 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,评审
doi:
更新日期:1999-11-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,多中心研究
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更新日期:2018-02-05 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章,评审
doi:
更新日期:2013-04-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-09-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1993-11-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2005-10-05 00:00:00
abstract:BACKGROUND:Porcine liver performing efficient physiological functions in the human body is prerequisite for successful liver xenotransplantation. However, the protein differences between pig and human remain largely unexplored. Therefore, we investigated the liver expression profile of a highly inbred minipig line. ME...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2007-05-05 00:00:00
abstract:BACKGROUND:The chronic obstructive pulmonary disease assessment test (CAT) is an easy to use health-related quality of life questionnaire, the modified Medical Research Council (mMRC) dyspnea scale is a classic dyspnea scale which is widely used, while the correlation between them is still not clear. This study investi...
journal_title:Chinese medical journal
pub_type: 杂志文章,多中心研究
doi:
更新日期:2013-01-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-06-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-10-01 00:00:00
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pub_type: 杂志文章
doi:
更新日期:2013-08-01 00:00:00
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pub_type: 临床试验,杂志文章
doi:
更新日期:2013-07-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1996-02-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-03-01 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2009-05-05 00:00:00
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journal_title:Chinese medical journal
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更新日期:2009-12-20 00:00:00
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journal_title:Chinese medical journal
pub_type: 杂志文章
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