Abstract:
OBJECTIVE:Vascular remodeling via apoptotic mechanisms is an important factor in vascular diseases. c-Jun amino-terminal kinase (JNK) is a member of the mitogen-activated protein kinase family and initiates apoptosis mainly via phosphorylation of the c-Jun transcription factor. We performed this study to clarify the roles of the JNK/c-Jun pathway and apoptosis in the pathogenesis of cerebral aneurysms. METHODS:Cerebral aneurysms from 12 patients and control vessels from 5 patients were studied. We analyzed the expression of phosphorylated JNK and phosphorylated c-Jun in cerebral aneurysms by using immunohistochemical methods. RESULTS:Immunoreactivity for phosphorylated JNK and phosphorylated c-Jun was increased in the vascular walls of the cerebral aneurysms studied. Immunoreactivity for single-stranded deoxyribonucleic acid (a marker of deoxyribonucleic acid damage) was also increased in aneurysmal tissue, compared with control vessels, and was colocalized with that for phosphorylated JNK and phosphorylated c-Jun in smooth muscle cells. CONCLUSION:These observations may lead to better understanding of the role of the JNK/c-Jun pathway in the development of cerebral aneurysms and to new strategies for treatment.
journal_name
Neurosurgeryjournal_title
Neurosurgeryauthors
Takagi Y,Ishikawa M,Nozaki K,Yoshimura S,Hashimoto Ndoi
10.1097/00006123-200210000-00027keywords:
subject
Has Abstractpub_date
2002-10-01 00:00:00pages
997-1002; discussion 1002-4issue
4eissn
0148-396Xissn
1524-4040journal_volume
51pub_type
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