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Nitric oxide secretion by endothelial cells in response to fluid shear stress, aspirin, and temperature
Author(s) -
Kabirian Fatemeh,
Amoabediny Ghassem,
Haghighipour Nooshin,
SalehiNik Nasim,
ZandiehDoulabi Behrouz
Publication year - 2015
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.35233
Subject(s) - thrombus , umbilical vein , materials science , aspirin , platelet , shear stress , nitric oxide , antithrombotic , in vivo , biophysics , endothelium , shear (geology) , biomedical engineering , medicine , composite material , chemistry , biochemistry , biology , in vitro , microbiology and biotechnology
Current vascular grafts have a high incidence of failure, especially in the grafts less than 6 mm in diameter, due to thrombus formation. Nitric oxide (NO) is released by endothelium and has some beneficial influences such as an antithrombotic effect. We hypothesized that applying different shear stress regiments and low temperature or aspirin would result in an increase in the amount of NO release from human umbilical vein endothelial cells (HUVECs) and decrease in platelet aggregation in the same manner as expected in vivo . HUVECs were cultured into the intraluminal surface of silicone tubes. HUVECs were subjected for 60 min to different parameters of shear stress, temperature, aspirin, and platelets or a combination in a perfusion bioreactor by monitoring NO secretion. We found that shear stress leads to an elevation of NO production in HUVECS, independent of the shear stress magnitude (0.9 or 1.8 dyne/cm 2 ). The magnitude of this response increased with a decrease in temperature. Our results also show that by addition of platelets in combination with aspirin to media circulation, no thrombus formation occurred during the test time. Presence of aspirin resulted in marked increase in NO levels. In conclusion, shear stresses, temperature lowering, and aspirin increase the amount of NO release from HUVECs. Also no thrombus formation was detected in our experimental setting. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 103A: 1231–1237, 2015.