Thrombomodulin expression in endothelial cells after contact with bone cement

Area of Science:

• Biomaterials Science
• Endothelial Cell Biology
• Molecular Biology

Background:

• Thrombomodulin is a crucial protein in endothelial cells, regulating coagulation.
• Bone cements are widely used in orthopedic surgery.
• Assessing the biocompatibility of bone cement components is essential.

Purpose of the Study:

• To investigate the effect of CMW 1 bone cement extracts on thrombomodulin expression in human umbilical vein endothelial cells.
• To determine if CMW 1 bone cement impacts the endothelial cell's ability to express thrombomodulin.

Main Methods:

• Human umbilical vein endothelial cells were exposed to CMW 1 bone cement extracts at different curing times (1 h and 7 days).
• Thrombomodulin antigen levels and mRNA expression were measured.
• Cells were also treated with all-trans retinoic acid (ATRA) with and without cement extracts.

Main Results:

• CMW 1 bone cement extracts did not significantly alter thrombomodulin antigen levels or mRNA expression in endothelial cells.
• All-trans retinoic acid (ATRA) significantly increased thrombomodulin expression.
• ATRA's ability to increase thrombomodulin was not inhibited by the presence of CMW 1 bone cement extracts.

Conclusions:

• CMW 1 bone cement does not appear to impair thrombomodulin expression in endothelial cells.
• Endothelial cells maintain their thrombomodulin-regulating capacity when exposed to CMW 1 bone cement.
• ATRA can enhance thrombomodulin expression independently of CMW 1 bone cement exposure.