Table 4.
Molecular based studies suggesting substrate affects EC thrombogenicity.
| Molecule tested | Cell type | Substrate material | results | Ref |
|---|---|---|---|---|
| TM, vWF PECAM VE-cadherin | Human umbilical vein | TCPS
Decellularised fibroblast matrix |
On decellularised matrix more PECAM, VE-cadherin and lower vWF. Also TM higher and constant over time compared to TCPS on which TM decreased over time. | 156 |
| TM, vWF | Human umbilical vein | albumin and sulphated chitosan coated polyester, TCPS | On polyester TM lower and vWF secretion higher | 157 |
| PGI2 | Bovine aortic | Fn, Laminin (of varying concentration) and gelatin coated TCPS | PGI2 increased post confluence on Fn and laminin coatings but not gelatin. Laminin conc. controlled pre and post confluence secretion levels | 173 |
| PGI2 | Bovine aortic
Porcine aortic |
TCPS coated with different concentration of poly-HEMA to control “adhesivity” | On higher “adhesivity” surface more distinct F-actin structure and higher PGI2 secretion | 166 |
| PGI2, vWF | Human umbilical vein | Fn-TCPS, crosslinked and non-crosslinked collagen | Small but significant difference in PGI2 and vWF secretion on TCPS versus crosslinked collagens | 140 |
| tPA, PGI2 | Human saphenous vein | ePTFE with or without coating of Fn, collagen-1 or mixture of both | Higher levels of PGI2 and tPA on Fn-ePTFE and ePTFE versus samples with collagen or collagen-Fn | 167 |
| PGI2, PAI-1, tPA | Human saphenous vein | Plastic, gelatin, collagen-1 gel, Fn, fibrin glue, de-endothelized porcine aorta, ePTFE precoated with collagen-I | No difference in basal levels of PGI2. tPA secretion significantly higher on collagen-1 gels but not on the collagen-1 precoated ePTFE. PAI higher on the collagen 1, gelatin, fibrin glue and porcine aorta. | 158 |
| PGI2, PAI-1, tPA | Human umbilical vein | PET, polypropylene | On PET significant less PGI2 and PAI-1 compared to polypropylene but tPA no different. | 168 |
| PGI2, PAI-1, tPA | Human umbilical vein | Ammonia plasma modified PTFE coated with Fn, collagen-1 or gelatin | Different levels of PGI2, PAI-1 and tPA between coatings and unmodified versus modified PTFE. | 148 |
| tPA and PAI-1 | Human umbilical vein | TCPS, PTFE and polyurethanes all coated with Fn | On Fn coated PTFE and polyurethanes higher secretion of PAI and tPA than on fn –TCPS, More PAI-1 deposited in underlying matrix on PTFE | 149 |
| PGI2, PAI-1, tPA | Human umbilical vein | Woven Dacron, double velour Dacron, Dacron-urethane and carbon coated Dacron urethane | Variations seen in PGI2 among surfaces. tPA secretion higher on Dacron-urethane and PAI-1 levels similar on all surfaces | 159 |
| tPA, PAI-1, vWF | Human umbilical vein | TCPS and PVC coated with gelatin, collagen and Fn | On PVC substrates, tPA increased, vWF secretion decreased and PAI-1increased (only PVC coated with collagen or gelatin). | 169 |
| ICAM | Human umbilical vein
Human saphenous vein |
Fn-ePTFE, PTFE, Fn-TCPS, TCPS | ICAM expression increased on ePTFE surface | 160,161, 162 |
| ELAM-1 | Human umbilical vein | PET with or without layer or pyrolytic carbon | ELAM-1 lower on PET with carbon layer | 215,216 |
| P-selectin | Human umbilical vein | Knitted PET, TCPS | P-selectin increased on knitted PET | 189 |
| ICAM, VCAM | Human umbilical vein | PS or TCPS both coated with Fn | No difference in ICAM but VCAM lower on PS. | 174 |
Fn = fibronectin, PS = polystyrene, TCPS = tissue culture PS, PET = poly(ethylene terephthalate)