Document Detail


Dynamic shear stress regulation of inflammatory and thrombotic pathways in baboon endothelial outgrowth cells.
MedLine Citation:
PMID:  23406430     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Endothelial outgrowth cells (EOCs) have garnered much attention as a potential autologous endothelial source for vascular implants or in tissue engineering applications due to their ease of isolation and proliferative ability; however, how these cells respond to different hemodynamic cues is ill-defined. This study investigates the inflammatory and thrombotic response of baboon EOCs (BaEOCs) to four hemodynamic conditions using the cone and plate shear apparatus: steady, laminar shear stress (SS); pulsatile, nonreversing laminar shear stress (PS); oscillatory, laminar shear stress (OS); and net positive, pulsatile, reversing laminar shear stress (RS). In summary, endothelial nitric oxide synthase (eNOS) mRNA was significantly upregulated by SS compared to OS. No differences were found in the mRNA levels of the inflammatory markers intercellular adhesion molecule-1 (ICAM-1), E-selectin, and vascular cell adhesion molecule-1 (VCAM-1) between the shear conditions; however, OS significantly increased the number of monocytes bound when compared to SS. Next, SS increased the anti-thrombogenic mRNA levels of CD39, thrombomodulin, and endothelial protein-C receptor (EPCR) compared to OS. SS also significantly increased CD39 and EPCR mRNA levels compared to RS. Finally, no significant differences were detected when comparing pro-thrombotic tissue factor mRNA or its activity levels. These results indicate that shear stress can have beneficial (SS) or adverse (OS, RS) effects on the inflammatory or thrombotic potential of EOCs. Further, these results suggest SS hemodynamic preconditioning may be optimal in increasing the efficacy of a vascular implant or in tissue-engineered applications that have incorporated EOCs.
Authors:
Randall F Ankeny; Monica T Hinds; Robert M Nerem
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2013-03-19
Journal Detail:
Title:  Tissue engineering. Part A     Volume:  19     ISSN:  1937-335X     ISO Abbreviation:  Tissue Eng Part A     Publication Date:  2013 Jul 
Date Detail:
Created Date:  2013-05-29     Completed Date:  2014-01-03     Revised Date:  2014-07-01    
Medline Journal Info:
Nlm Unique ID:  101466659     Medline TA:  Tissue Eng Part A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1573-82     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
E-Selectin / metabolism
Endothelial Cells / cytology*,  metabolism
Inflammation / metabolism*
Intercellular Adhesion Molecule-1 / metabolism
Papio
Stress, Mechanical*
Grant Support
ID/Acronym/Agency:
P40 OD010988/OD/NIH HHS; P40 RR012317/RR/NCRR NIH HHS; R01 HL095474/HL/NHLBI NIH HHS; R01-HL095474/HL/NHLBI NIH HHS
Chemical
Reg. No./Substance:
0/E-Selectin; 126547-89-5/Intercellular Adhesion Molecule-1
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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