國家衛生研究院 NHRI:Item 3990099045/6694

NHRI > Institute of Biomedical Engineering and Nanomedicine > Jeng-Jiann Chiu > Conference Papers/Meeting Abstract > Item 3990099045/6694

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/6694

Title:	Effects of disturbed flow on leukocyte transendothelial migration
Authors:	Chen, CN;Chang, SF;Ko, YC;Chiu, JJ
Contributors:	Division of Medical Engineering Research
Abstract:	Leukocyte transendothelial migration across vascular endothelial cells (ECs), which exist in close proximity to vascular smooth muscle cells (SMCs), is a critical step in the sequence of events leading to atherosclerosis. The early atherosclerotic lesions preferentially localize at branches and curvatures of the arterial system, where the local flow is often disturbed, suggesting that hemodynamic factors play a role in leukocyte transendothelial migration. In the present study, we investigate the effects of disturbed flow on leukocyte transendothelial migration, using our newly developed EC/SMC co-culture flow system. EC monolayers were cultured on a three-dimensional collagen gel containing multilayers of SMCs and incorporated into a vertical-step flow chamber, which can produce a disturbed flow with the patterns similar to those near arterial branches and bends, e.g., flow separation, recirculation, and reattachment. We found that co-culture with SMCs enhances leukocyte adhesion to ECs and their subsequent transendothelial migration under disturbed flow, especially in the reattachment flow area. This increase in adhesion and transmigration may be due to the adhesive and chemotactic factors released from ECs by co-culture with SMCs. Our findings have provided data for the understanding of the in vivo behaviors of leukocyte transendothelial migration under complex flow environments found in regions of prevalence of atherosclerotic lesion.
Date:	2004-05
Relation:	Cardiovascular Pathology. 2004 May-Jun;13(3, Suppl.):109.
Link to:	http://dx.doi.org/10.1016/j.carpath.2004.03.327
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1054-8807&DestApp=IC2JCR
Appears in Collections:	[Jeng-Jiann Chiu] Conference Papers/Meeting Abstract

Files in This Item:

File	Description	Size	Format
SDO2012082218.pdf		40Kb	Adobe PDF	540	View/Open

Loading...