|
1
|
Jalaie H, Steitz J, Afify M, Barbati ME, Hoeft K, Assar MAM, Hermanns-Sachweh B, Tolba RH, Jacobs MJ, Schleimer K. In vivo endothelialization and neointimal hyperplasia assessment after angioplasty of sheep carotid artery with a novel polycarbonate polyurethane patch. J Biomater Appl 2019; 34:208-218. [PMID: 31088184 DOI: 10.1177/0885328219849368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Houman Jalaie
- 1 European Vascular Center Aachen-Maastricht, Department of Vascular Surgery, University Hospital RWTH Aachen, Germany
| | - Julia Steitz
- 2 Institute for Laboratory Animal Science, RWTH-Aachen University, Germany
| | - Mamdouh Afify
- 2 Institute for Laboratory Animal Science, RWTH-Aachen University, Germany.,3 Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - Mohammad Esmaeil Barbati
- 1 European Vascular Center Aachen-Maastricht, Department of Vascular Surgery, University Hospital RWTH Aachen, Germany
| | - Konrad Hoeft
- 4 Division of Nephrology and Clinical Immunology, University Hospital RWTH Aachen, Germany
| | - Mona Ali Mahmoud Assar
- 2 Institute for Laboratory Animal Science, RWTH-Aachen University, Germany.,6 Institute for Pathology, RWTH-Aachen University, Germany
| | | | - Rene H Tolba
- 2 Institute for Laboratory Animal Science, RWTH-Aachen University, Germany
| | - Michael J Jacobs
- 1 European Vascular Center Aachen-Maastricht, Department of Vascular Surgery, University Hospital RWTH Aachen, Germany
| | - Karina Schleimer
- 1 European Vascular Center Aachen-Maastricht, Department of Vascular Surgery, University Hospital RWTH Aachen, Germany
| |
Collapse
|
|
2
|
Lukas K, Stadtherr K, Gessner A, Wehner D, Schmid T, Wendel HP, Schmid C, Lehle K. Effect of Immobilized Antithrombin III on the Thromboresistance of Polycarbonate Urethane. MATERIALS 2017; 10:ma10040335. [PMID: 28772696 PMCID: PMC5506919 DOI: 10.3390/ma10040335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/28/2017] [Accepted: 03/21/2017] [Indexed: 11/16/2022]
Abstract
The surface of foils and vascular grafts made from a thermoplastic polycarbonate urethanes (PCU) (Chronoflex AR) were chemically modified using gas plasma treatment, binding of hydrogels—(1) polyethylene glycol bisdiamine and carboxymethyl dextran (PEG-DEX) and (2) polyethyleneimine (PEI)—and immobilization of human antithrombin III (AT). Their biological impact was tested in vitro under static and dynamic conditions. Static test methods showed a significantly reduced adhesion of endothelial cells, platelets, and bacteria, compared to untreated PCU. Modified PCU grafts were circulated in a Chandler-Loop model for 90 min at 37 °C with human blood. Before and after circulation, parameters of the hemostatic system (coagulation, platelets, complement, and leukocyte activation) were analyzed. PEI-AT significantly inhibited the activation of both coagulation and platelets and prevented the activation of leukocytes and complement. In conclusion, both modifications significantly reduce coagulation activation, but only PEI-AT creates anti-bacterial and anti-thrombogenic functionality.
Collapse
Affiliation(s)
- Karin Lukas
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| | - Karin Stadtherr
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| | - Andre Gessner
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| | - Daniel Wehner
- Dualis Medtech GmbH, Am Technologiepark 8+10, 82229 Seefeld, Germany.
| | - Thomas Schmid
- Dualis Medtech GmbH, Am Technologiepark 8+10, 82229 Seefeld, Germany.
| | - Hans Peter Wendel
- Department of Thoracic, Cardiac, and Vascular Surgery, University Hospital Tübingen, Hoppe-Seyler-Str. 3, 72076 Tübingen, Germany.
| | - Christof Schmid
- Department of Cardiothoracic Surgery, University Medical Center Regensburg, Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| | - Karla Lehle
- Department of Cardiothoracic Surgery, University Medical Center Regensburg, Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| |
Collapse
|