Abstract:
OBJECTIVE:To evaluate protein profiles and Fc gamma receptor IIb (FCGRIIB) expression in abdominal aortic aneurysm (AAA) compared to the expression in normal aortas. METHODS:We performed a protein array to study the protein expression profiles within AAA and normal aortic tissues. FCGRIIB was found to be significantly elevated in AAA samples. Quantitative PCR and Western blot analyses were performed to study the expression of FCGRIIB in AAA compared to that in normal aortic tissue. Immunohistochemistry was used to locate FCGRIIB and the B cell marker CD19 in AAA and normal aortas specimens. RESULTS:FCGRIIB was significantly elevated in AAA tissues in both mRNA (AAA vs. normal control: about 5.8 folds, p < 0.001) and protein levels (AAA vs. normal control: about 6.3 folds, p < 0.001). In AAA specimens, immunohistochemistry revealed that FCGRIIB localized to the area of inflammatory infiltrates, which consisted of CD 19+ B cells and other inflammatory cells. FCGRIIB and CD19 were undetectable in normal aortas. CONCLUSIONS:FCGRIIB was significantly elevated in AAA tissues compared to normal aortas. FCGRIIB may be involved in the pathogenesis of AAA by regulation of inflammatory reactions.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Shi Y,Yang CQ,Wang SW,Li W,Li J,Wang SMdoi
10.1016/j.bbrc.2017.02.088subject
Has Abstractpub_date
2017-04-01 00:00:00pages
295-300issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(17)30379-0journal_volume
485pub_type
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