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Wang Y, Zong Y, Chen W, Diao N, Zhao Q, Li C, Jia B, Zhang M, Li J, Zhao Y, Du R, He Z. Decellularized Antler Cancellous Bone Matrix Material Can Serve as Potential Bone Tissue Scaffold. Biomolecules 2024; 14:907. [PMID: 39199295 PMCID: PMC11353137 DOI: 10.3390/biom14080907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 07/15/2024] [Accepted: 07/16/2024] [Indexed: 09/01/2024] Open
Abstract
Due to the limited supply of autologous bone grafts, there is a need to develop more bone matrix materials to repair bone defects. Xenograft bone is expected to be used for clinical treatment due to its exact structural similarity to natural bone and its high biocompatibility. In this study, decellularized antler cancellous bone matrix (DACB) was first prepared, and then the extent of decellularization of DACB was verified by histological staining, which demonstrated that it retained the extracellular matrix (ECM). The bioactivity of DACB was assessed using C3H10T1/2 cells, revealing that DACB enhanced cell proliferation and facilitated cell adhesion and osteogenic differentiation. When evaluated by implanting DACB into nude mice, there were no signs of necrosis or inflammation in the epidermal tissues. The bone repair effect of DACB was verified in vivo using sika deer during the antler growth period as an animal model, and the molecular mechanisms of bone repair were further evaluated by transcriptomic analysis of the regenerated tissues. Our findings suggest that the low immunogenicity of DACB enhances the production of bone extracellular matrix components, leading to effective osseointegration between bone and DACB. This study provides a new reference for solving bone defects.
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Affiliation(s)
- Yusu Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun 130112, China
| | - Ying Zong
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
| | - Weijia Chen
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
| | - Naichao Diao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
| | - Quanmin Zhao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
| | - Chunyi Li
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, Changchun 130112, China
| | - Boyin Jia
- College of Animal Medicine, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;
| | - Miao Zhang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
| | - Jianming Li
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
| | - Yan Zhao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
| | - Rui Du
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
| | - Zhongmei He
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; (Y.W.); (Y.Z.); (W.C.); (N.D.); (Q.Z.); (C.L.); (M.Z.); (J.L.); (Y.Z.)
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Nativel F, Tollec S, Sellal KO, Trossaërt M, Grimandi G. Use of clinical biological tests of haemostasis to evaluate topical haemostatics. Int J Lab Hematol 2024; 46:531-537. [PMID: 38284282 DOI: 10.1111/ijlh.14235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 01/11/2024] [Indexed: 01/30/2024]
Abstract
INTRODUCTION In addition to traditional means, topical haemostatics are currently used to avoid haemorrhage during surgery. Although they have been reported to be effective, there is a low level of proof of their clinical efficacy, which is at odds with their levels of use. This study used two methods to better understand their in vitro mechanism of action. METHODS Two clinical biology assays were used to measure the action of topical haemostatics on primary and secondary haemostasis. Calibrated samples of collagen sponges and polypropylene non-woven gauze were tested. Platelet aggregation was assessed using a multichannel aggregometer. A thrombin generation assay (TGA) was used with a fluorogenic readout. Tissue factor solutions were used to activate coagulation. RESULTS In terms of primary haemostasis, collagen sponges stimulated platelet aggregation, in particular between 2 and 5 min after incubation with platelet-rich plasma and with no dose effect. In regard to coagulation, the kinetics of thrombin generation was enhanced. Polypropylene non-woven gauze did not exhibit any effect on platelet aggregation, although it did have a weak effect on the kinetics of thrombin generation. CONCLUSION Collagen is well known to exert a haemostatic effect due to its action on platelet aggregation. By contrast, polypropylene non-woven gauze has not been shown to have any effect on platelet aggregation other than a minor impact on thrombin generation. The results obtained with the devices tested are in agreement with the literature. Platelet aggregation biological assays and TGA measurements appear to be suitable for evaluation of these medical products.
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Affiliation(s)
- Fabien Nativel
- Nantes Université, Oniris, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000, Nantes, France
- Nantes Université, CHU Nantes, Pharmacie, F-44000, Nantes, France
| | | | | | - Marc Trossaërt
- Nantes Université, CHU Nantes, Service Hématologie, F-44000, Nantes, France
| | - Gaël Grimandi
- Nantes Université, Oniris, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000, Nantes, France
- Nantes Université, CHU Nantes, Pharmacie, F-44000, Nantes, France
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Zhang L, Cao K, Xie J, Liang X, Gong H, Luo Q, Luo H. Aβ 42 and ROS dual-targeted multifunctional nanocomposite for combination therapy of Alzheimer's disease. J Nanobiotechnology 2024; 22:278. [PMID: 38783363 PMCID: PMC11112798 DOI: 10.1186/s12951-024-02543-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 05/09/2024] [Indexed: 05/25/2024] Open
Abstract
Amyloid-β (Aβ) readily misfolds into neurotoxic aggregates, generating high levels of reactive oxygen species (ROS), leading to progressive oxidative damage and ultimately cell death. Therefore, simultaneous inhibition of Aβ aggregation and scavenging of ROS may be a promising therapeutic strategy to alleviate Alzheimer's disease pathology. Based on the previously developed antibody 1F12 that targets all forms of Aβ42, we developed an Aβ42 and ROS dual-targeting nanocomposite using biodegradable mesoporous silica nanoparticles as carriers to load ultra-small cerium oxide nanocrystals (bMSNs@Ce-1F12). By modifying the brain-targeted rabies virus glycoprotein 29 (RVG29-bMSNs@Ce-1F12), this intelligent nanocomposite can efficiently target brain Aβ-rich regions. Combined with peripheral and central nervous system treatments, RVG29-bMSNs@Ce-1F12 can significantly alleviate AD symptoms by inhibiting Aβ42 misfolding, accelerating Aβ42 clearance, and scavenging ROS. Furthermore, this synergistic effect of ROS scavenging and Aβ clearance exhibited by this Aβ42 and ROS dual-targeted strategy also reduced the burden of hyperphosphorylated tau, alleviated glial cell activation, and ultimately improved cognitive function in APP/PS1 mice. Our findings indicate that RVG29-bMSNs@Ce-1F12 is a promising nanodrug that can facilitate multi-target treatment of AD.
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Affiliation(s)
- Liding Zhang
- State Key Laboratory of Digital Medical Engineering, Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou, 570228, China
| | - Kai Cao
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jun Xie
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaohan Liang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Hui Gong
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, 430074, China
- Research Unit of Multimodal Cross Scale Neural Signal Detection and Imaging, Chinese Academy of Medical Sciences, HUST-Suzhou Institute for Brainsmatics, JITRI, Suzhou, 215123, China
| | - Qingming Luo
- State Key Laboratory of Digital Medical Engineering, Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou, 570228, China.
- Research Unit of Multimodal Cross Scale Neural Signal Detection and Imaging, Chinese Academy of Medical Sciences, HUST-Suzhou Institute for Brainsmatics, JITRI, Suzhou, 215123, China.
| | - Haiming Luo
- State Key Laboratory of Digital Medical Engineering, Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou, 570228, China.
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, 430074, China.
- Research Unit of Multimodal Cross Scale Neural Signal Detection and Imaging, Chinese Academy of Medical Sciences, HUST-Suzhou Institute for Brainsmatics, JITRI, Suzhou, 215123, China.
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Gao W, Shen H, Chang Y, Tang Q, Li T, Sun D. Bivalirudin-hydrogel coatings of polyvinyl chloride on extracorporeal membrane oxygenation for anticoagulation. Front Cardiovasc Med 2023; 10:1301507. [PMID: 38162136 PMCID: PMC10754995 DOI: 10.3389/fcvm.2023.1301507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 11/29/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction Thromboembolic events associated with extracorporeal membrane oxygenation (ECMO) in clinical treatment are typical. Heparin coating has been widely employed as a surface modification strategy for ECMO tubes. However, its clinical application is often accompanied by unavoidable complications due to its mechanism of action. As a direct thrombin inhibitor with a single target, Bivalirudin (BV) has exhibited a lower incidence of adverse events and superior pharmacokinetic performance compared to heparin. Methods A gelatin methacrylate hydrogel (GelMA) coating layer with BV was successfully synthesized on polyvinyl chloride, and the drug release ratio was close to complete release within 7 days. Results and discussion Simulated extracorporeal circulation experiments using roller pumps in vitro and jugular arteriovenous bypass experiments in rabbits demonstrated its outstanding anticoagulant efficacy. The systemic anticoagulant assay proved that BV hydrogel coating does not affect the coagulation level, and reduces the risk of complications such as systemic bleeding compared to intravenous injection. BV-Coating GelMA hydrogel tube has exhibited good biocompatibility and significantly improved anticoagulant performance, making it an optimal choice for surface materials used in blood-contacting medical devices.
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Affiliation(s)
- Wenqing Gao
- Department of Cardiac Center, Tianjin Third Central Hospital, Tianjin, China
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Tianjin, China
- School of Medicine, Nankai University, Tianjin, China
- Tianjin ECMO Treatment and Training Base, Tianjin, China
| | - Hechen Shen
- Department of Cardiac Center, Tianjin Third Central Hospital, Tianjin, China
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Tianjin, China
- Tianjin ECMO Treatment and Training Base, Tianjin, China
- The Third Central Clinical College of Tianjin Medical University, Tianjin, China
| | - Yun Chang
- Department of Cardiac Center, Tianjin Third Central Hospital, Tianjin, China
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Tianjin, China
- School of Medicine, Nankai University, Tianjin, China
- Tianjin ECMO Treatment and Training Base, Tianjin, China
| | - Qin Tang
- Department of Ophthalmology, West China Hospital Sichuan University, Chengdu, Sichuan, China
| | - Tong Li
- Department of Cardiac Center, Tianjin Third Central Hospital, Tianjin, China
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Tianjin, China
- School of Medicine, Nankai University, Tianjin, China
- Tianjin ECMO Treatment and Training Base, Tianjin, China
- The Third Central Clinical College of Tianjin Medical University, Tianjin, China
| | - Di Sun
- Key Laboratory of Photochemical Conversion and Optoelectronic Material, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
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Rengarajan V, Clyde A, Pontsler J, Valiente J, Peel A, Huang Y. Assessing Leachable Cytotoxicity of 3D-Printed Polymers and Facile Detoxification Methods. 3D PRINTING AND ADDITIVE MANUFACTURING 2023; 10:1110-1121. [PMID: 37873063 PMCID: PMC10593418 DOI: 10.1089/3dp.2021.0216] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Additive manufacturing of polymers is gaining momentum in health care industries by providing rapid 3D printing of customizable designs. Yet, little is explored about the cytotoxicity of leachable toxins that the 3D printing process introduced into the final product. We studied three printable materials, which have various mechanical properties and are widely used in stereolithography 3D printing. We evaluated the cytotoxicity of these materials through exposing two fibroblast cell lines (human and mouse derived) to the 3D-printed parts, using overlay indirect contact assays. All the 3D-printed parts were measured toxic to the cells in a leachable manner, with flexible materials more toxic than rigid materials. Furthermore, we attempted to reduce the toxicity of the 3D-printed material by employing three treatment methods (further curing, passivation coating, and Soxhlet solvent extraction). The Soxhlet solvent extraction method was the most effective in removing the leachable toxins, resulting in the eradication of the material's toxicity. Passivation coating and further curing showed moderate and little detoxification, respectively. Additionally, mechanical testing of the materials treated with extraction methods revealed no significant impacts on its mechanical performances. As leachable toxins are broadly present in 3D-printed polymers, our cytotoxicity evaluation and reduction methods could aid in extending the selections of biocompatible materials and pave the way for the translational use of 3D printing.
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Affiliation(s)
| | - Angela Clyde
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
- Institute of Antiviral Research, Utah State University, Logan, Utah, USA
| | - Jefferson Pontsler
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
| | - Jonathan Valiente
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
| | - Adreann Peel
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
| | - Yu Huang
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
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Shen J, Jiao W, Chen Z, Wang C, Song X, Ma L, Tang Z, Yan W, Xie H, Yuan B, Wang C, Dai J, Sun Y, Du L, Jin Y. Injectable multifunctional chitosan/dextran-based hydrogel accelerates wound healing in combined radiation and burn injury. Carbohydr Polym 2023; 316:121024. [PMID: 37321722 DOI: 10.1016/j.carbpol.2023.121024] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 06/17/2023]
Abstract
Clinical wound management of combined radiation and burn injury (CRBI) remains a huge challenge due to serious injuries induced by redundant reactive oxygen species (ROS), the accompanying hematopoietic, immunologic suppression and stem cell reduction. Herein, the injectable multifunctional Schiff base cross-linked with gallic acid modified chitosan (CSGA)/oxidized dextran (ODex) hydrogels were rationally designed to accelerate wound healing through elimination of ROS in CRBI. CSGA/ODex hydrogels, fabricated by mixing solutions of CSGA and Odex, displayed good self-healing ability, excellent injectability, strong antioxidant activity, and favorable biocompatibility. More importantly, CSGA/ODex hydrogels exhibited excellent antibacterial properties, which is facilitated for wound healing. Furthermore, CSGA/ODex hydrogels significantly suppressed the oxidative damage of L929 cells in an H2O2-induced ROS microenvironment. The recovery of mice with CRBI in mice demonstrated that CSGA/ODex hydrogels significantly reduced the hyperplasia of epithelial cells and the expression of proinflammatory cytokine, and accelerated wound healing which was superior to the treatment with commercial triethanolamine ointment. In conclusion, the CSGA/ODex hydrogels as a wound dressing could accelerate the wound healing and tissue regeneration of CRBI, which provides great potential in clinical treatment of CRBI.
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Affiliation(s)
- Jintao Shen
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Wencheng Jiao
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Hebei University, Baoding 071002, China
| | - Ziyuan Chen
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Chunqing Wang
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Xingshuang Song
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Lei Ma
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Ziyan Tang
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Wenrui Yan
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Hua Xie
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Bochuan Yuan
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Chenyun Wang
- The Fourth Clinical Center Affiliated to Chinese PLA General Hospital, Beijing 100048, China
| | - Jing Dai
- Information Department, General Hospital of Western War Zone, Chengdu 610083, China
| | - Yunbo Sun
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Hebei University, Baoding 071002, China.
| | - Lina Du
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Hebei University, Baoding 071002, China; Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
| | - Yiguang Jin
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Guangdong Pharmaceutical University, Guangzhou 510006, China.
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Jamiolkowski MA, Golding MD, Malinauskas RA, Lu Q. In Vitro Thrombogenicity Testing of Biomaterials in a Dynamic Flow Loop: Effects of Length and Quantity of Test Samples. J Med Device 2023; 17:031003. [PMID: 37554290 PMCID: PMC10405281 DOI: 10.1115/1.4062863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/16/2023] [Indexed: 08/10/2023] Open
Abstract
The results of in vitro dynamic thrombogenicity testing of biomaterials and medical devices can be significantly impacted by test conditions. To develop and standardize a robust dynamic in vitro thrombogenicity tool, the key test parameters need to be appropriately evaluated and optimized. We used a flow loop test system previously developed in our laboratory to investigate the effects of sample length and the number of samples per test loop on the thrombogenicity results. Porcine blood heparinized to a donor-specific target concentration was recirculated at room temperature through polyvinyl chloride (PVC) tubing loops containing test materials for 1 h at 200 mL/min. Four test materials (polytetrafluoroethylene (PTFE), latex, PVC, and silicone) with various thrombotic potentials in two sample lengths (12 and 18 cm) were examined. For the 12-cm long materials, two different test configurations (one and two samples per loop) were compared. Thrombogenicity was assessed through percent thrombus surface coverage, thrombus weight, and platelet count reduction in the blood. The test system was able to effectively differentiate the thrombogenicity profile of the materials (latex > silicone > PVC ≥ PTFE) at all test configurations. Increasing test sample length by 50% did not significantly impact the test results as both 12 and 18 cm sample lengths were shown to equally differentiate thrombotic potentials between the materials. The addition of a second test sample to each loop did not increase the test sensitivity and may produce confounding results, and thus a single test sample per loop is recommended.
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Affiliation(s)
| | | | | | - Qijin Lu
- U.S. Food and Drug Administration, Silver Spring, MD 20993
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Patel M, Jamiolkowski MA, Vejendla A, Bentley V, Malinauskas RA, Lu Q. Effect of Temperature on Thrombogenicity Testing of Biomaterials in an In Vitro Dynamic Flow Loop System. ASAIO J 2023; 69:576-582. [PMID: 36848878 PMCID: PMC10368176 DOI: 10.1097/mat.0000000000001897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
Abstract
To develop and standardize a reliable in vitro dynamic thrombogenicity test protocol, the key test parameters that could impact thrombus formation need to be investigated and understood. In this study, we evaluated the effect of temperature on the thrombogenic responses (thrombus surface coverage, thrombus weight, and platelet count reduction) of various materials using an in vitro blood flow loop test system. Whole blood from live sheep and cow donors was used to assess four materials with varying thrombogenic potentials: negative-control polytetrafluoroethylene (PTFE), positive-control latex, silicone, and high-density polyethylene (HDPE). Blood, heparinized to a donor-specific concentration, was recirculated through a polyvinyl chloride tubing loop containing the test material at room temperature (22-24°C) for 1 hour, or at 37°C for 1 or 2 hours. The flow loop system could effectively differentiate a thrombogenic material (latex) from the other materials for both test temperatures and blood species ( p < 0.05). However, compared with 37°C, testing at room temperature appeared to have slightly better sensitivity in differentiating silicone (intermediate thrombogenic potential) from the relatively thromboresistant materials (PTFE and HDPE, p < 0.05). These data suggest that testing at room temperature may be a viable option for dynamic thrombogenicity assessment of biomaterials and medical devices.
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Affiliation(s)
- Mehulkumar Patel
- From the Division of Applied Mechanics, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, U.S. Food and Drug Administration (FDA), Silver Spring, Maryland
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Jamiolkowski MA, Patel M, Golding MD, Malinauskas RA, Lu Q. Comparison of Animal and Human Blood for In Vitro Dynamic Thrombogenicity Testing of Biomaterials. Artif Organs 2022; 46:2400-2411. [PMID: 35866431 PMCID: PMC9669094 DOI: 10.1111/aor.14366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/16/2022] [Accepted: 07/11/2022] [Indexed: 01/28/2023]
Abstract
BACKGROUND To determine suitable alternatives to human blood for in vitro dynamic thrombogenicity testing of biomaterials, four different animal blood sources (ovine, bovine, and porcine blood from live donors, and abattoir porcine blood) were compared to fresh human blood. METHODS To account for blood coagulability differences between individual donors and species, each blood pool was heparinized to a donor-specific concentration immediately before testing in a dynamic flow loop system. The target heparin level was established using a static thrombosis pre-test. For dynamic testing, whole blood was recirculated at room temperature for 1 hr at 200 mL/min through a flow loop containing a single test material. Four materials with varying thrombotic potentials were investigated: latex (positive control), polytetrafluoroethylene (PTFE) (negative control), silicone (intermediate thrombotic potential), and high-density polyethylene (HDPE) (historically thromboresistant). Thrombus weight and surface area coverage on the test materials were quantified, along with platelet count reduction in the blood. RESULTS While donor-specific heparin levels varied substantially from 0.6 U/ml to 7.0 U/mL among the different blood sources, each source was able to differentiate between the thrombogenic latex and the thromboresistant PTFE and HDPE materials (P< 0.05). However, only donor ovine and bovine blood were sensitive enough to differentiate an increased response for the intermediate thrombotic silicone material compared to PTFE and HDPE. CONCLUSIONS These results demonstrated that multiple animal blood sources (particularly donor ovine and bovine blood) may be suitable alternatives to fresh human blood for dynamic thrombogenicity testing when appropriate control materials and donor-specific anticoagulation levels are used.
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Affiliation(s)
- Megan A Jamiolkowski
- Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD, USA
| | - Mehulkumar Patel
- Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD, USA
| | - Madelyn D Golding
- Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD, USA
| | - Richard A Malinauskas
- Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD, USA
| | - Qijin Lu
- Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD, USA
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Li L, Chen C, Zhang C, Luo R, Lan X, Guo F, Ma L, Fu P, Wang Y. A honokiol-mediated robust coating for blood-contacting devices with anti-inflammatory, antibacterial and antithrombotic properties. J Mater Chem B 2021; 9:9770-9783. [PMID: 34806726 DOI: 10.1039/d1tb01617b] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Thrombus, bacterial infections, and severe inflammation are still serious problems that have to be faced with blood-contacting materials. However, it is a great challenge to simultaneously meet the above functional requirements in a simple, economical and efficient method. As such, we put forward a robust and versatile coating strategy by covalently modifying the multi-pharmacological drug honokiol (HK) with an amine-rich polydopamine/polyethyleneimine coating, through which anticoagulant, antibacterial and anti-inflammatory properties were obtained (DPHc) simultaneously. The amine content in the DPHc coating was lower than the detection limit, while it contained abundant phenolic hydroxyl groups (49 μmol cm-2). Meanwhile, the 30 day drug release test confirmed that the drug was firmly modified on the surface of the coating without release. A systematic in vitro and ex vivo evaluation confirmed that the coating had significant anti-thrombotic properties. The antibacterial rates of the DPHc coating against Staphylococcus aureus and Escherichia coli reached 99.98% and 99.99%, respectively. In addition, subcutaneous implantation indicated that the DPHc coating also has excellent histocompatibility. To the best of our knowledge, this is the first study using HK as a coating material that can not only combat thrombosis and infection but also significantly inhibit inflammation associated with the use of blood-contacting materials, thus expanding the application of HK in the field of biomaterials.
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Affiliation(s)
- Linhua Li
- Kidney Research Institute, National Clinical Research Center for Geriatrics and Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China.
| | - Chong Chen
- Laboratory of Biomechanical Engineering, Department of Applied Mechanics, College of Architecture & Environment, Sichuan University, Chengdu, 610064, China
| | - Chunle Zhang
- Kidney Research Institute, National Clinical Research Center for Geriatrics and Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China.
| | - Rifang Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
| | - Xiaorong Lan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
| | - Fan Guo
- Kidney Research Institute, National Clinical Research Center for Geriatrics and Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China.
| | - Liang Ma
- Kidney Research Institute, National Clinical Research Center for Geriatrics and Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China.
| | - Ping Fu
- Kidney Research Institute, National Clinical Research Center for Geriatrics and Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China.
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
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11
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Bio-Compatibility and Bio-Insulation of Implantable Electrode Prosthesis Ameliorated by A-174 Silane Primed Parylene-C Deposited Embedment. MICROMACHINES 2020; 11:mi11121064. [PMID: 33266050 PMCID: PMC7761135 DOI: 10.3390/mi11121064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/24/2020] [Accepted: 11/29/2020] [Indexed: 11/16/2022]
Abstract
Microelectrodes for pain management, neural prosthesis or assistances have a huge medical demand, such as the application of pain management chip or retinal prosthesis addressed on age-related macular degeneration (AMD) and the retinitis pigmentosa (RP). Due to lifelong implanted in human body and direct adhesion of neural tissues, the electrodes and associated insulation materials should possess an ideal bio-compatibility, including non-cytotoxicity and no safety concern elicited by immune responses. Our goal intended to develop retinal prosthesis, an electrical circuit chip used for assisting neural electrons transmission on retina and ameliorating the retinal disability. Therefore, based on the ISO 10993 guidance for implantable medical devices, the electrode prosthesis with insulation material has to conduct bio-compatibility assessment including cytotoxicity, hemolysis, (skin) irritation and pathological implantation examinations. In this study, we manufactured inter-digitated electrode (IDE) chips mimic the electrode prosthesis through photolithography. The titanium and platinum composites were deposited onto a silicon wafer to prepare an electric circuit to mimic the electrode used in retinal prosthesis manufacture, which further be encapsulated to examine the bio-compatibility in compliance with ISO 10993 and ASTM guidance specifically for implantable medical devices. Parylene-C, polyimide and silicon carbide were selected as materials for electrode encapsulation in comparison. Our data revealed parylene-C coating showed a significant excellence on bio-insulation and bio-compatibility specifically addressed on implantable neuron stimulatory devices and provided an economic procedure to package the electrode prosthesis. Therefore, parylene C encapsulation should serve as a consideration for future application on retinal prosthesis manufacture and examination.
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12
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In vitro hemocompatibility testing of medical devices. Thromb Res 2020; 195:146-150. [DOI: 10.1016/j.thromres.2020.07.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/18/2020] [Accepted: 07/10/2020] [Indexed: 12/14/2022]
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13
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Fu S, Yang D, Zhang P, Sun G. Antibacterial Polylactic- co-glycolic Acid Braided Threads Using Plasma and Coating Modifications for Acupoint Catgut Embedding Therapy Applications. ACS APPLIED BIO MATERIALS 2020; 3:1902-1912. [PMID: 35025313 DOI: 10.1021/acsabm.9b01071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Polylactic-co-glycolic acid (PLGA) thread is frequently used for acupoint catgut embedding therapy (ACET), but the poor hydrophilicity and biocompatibility largely limited its wider applications. The aim of this study is to functionalize the PLGA braided thread and improve its cell adhesion property. The PLGA strands are first processed into threads on a circular braiding machine, and then, antibacterial treatment was introduced with and without oxygen plasma treatments. Afterward, functional characterizations such as antibacterial activity (Staphylococcus aureus and Escherichia coli), cytotoxicity, cell attachment and cell morphology, histological observation, and biodegradation experiments of threads were measured. Moreover, tensile properties and flexibility of the threads were determined to evaluate their mechanical properties. The modified threads showed rougher surfaces than those of the unmodified ones from SEM observations, and the weights and fiber diameters of the threads increased correspondingly, together with the improved surface hydrophilicity. All coated sutures showed durable antimicrobial function and slow drug releasing features for more than 5 days and good cell viability (more than 75%), according to the standard of ISO 10993-5:2009. Besides, cell attachment, tissue growth, and collagen regeneration of plasma-treated samples were greatly improved compared to those of without the plasma treatment. The threads presented slow degradation behavior after the antibacterial treatment. The threads with only plasma-treated revealed a promising prospect for clinical applications.
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Affiliation(s)
- Shaoju Fu
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Dongchao Yang
- Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200011, China
| | - Peihua Zhang
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Gang Sun
- Department of Biological and Agricultural Engineering, University of California, Davis, Davis, California 95616, United States
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14
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Mzyk A, Imbir G, Trembecka-Wójciga K, Lackner JM, Plutecka H, Jasek-Gajda E, Kawałko J, Major R. Rolling or Two-Stage Aggregation of Platelets on the Surface of Thin Ceramic Coatings under in Vitro Simulated Blood Flow Conditions. ACS Biomater Sci Eng 2020; 6:898-911. [PMID: 33464848 DOI: 10.1021/acsbiomaterials.9b01074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The process of modern cardiovascular device fabrication should always be associated with an investigation of how surface properties modulate its hemocompatibility through plasma protein adsorption as well as blood morphotic element activation and adhesion. In this work, a package of novel assays was used to correlate the physicochemical properties of thin ceramic coatings with hemocompatibility under dynamic conditions. Different variants of carbon-based films were prepared on polymer substrates using the magnetron sputtering method. The microstructural, mechanical, and surface physicochemical tests were performed to characterize the coatings, followed by investigation of whole human blood quality changes under blood flow conditions using the "Impact R" test, tubes' tester, and radial flow chamber assay. The applied methodology allowed us to determine that aggregate formation on hydrophobic and hydrophilic carbon-based coatings may follow one of the two different mechanisms dependent on the type and conformational changes of adsorbed blood plasma proteins.
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Affiliation(s)
- Aldona Mzyk
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Street, 30-059 Krakow, Poland
| | - Gabriela Imbir
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Street, 30-059 Krakow, Poland
| | - Klaudia Trembecka-Wójciga
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Street, 30-059 Krakow, Poland
| | - Juergen M Lackner
- Joanneum Research Forschungsges, Institute for Surface Technologies and Photonics, Functional Surfaces, 94 Leobner Street, A-8712 Niklasdorf, Austria
| | - Hanna Plutecka
- Department of Medicine, Jagiellonian University Medical College, 8 Skawinska Street, 31-066 Krakow, Poland
| | - Ewa Jasek-Gajda
- Department of Histology, Jagiellonian University Medical College, 7a Kopernika Street, 31-034 Krakow, Poland
| | - Jakub Kawałko
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Roman Major
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Street, 30-059 Krakow, Poland
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15
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An In Vitro Blood Flow Loop System for Evaluating the Thrombogenicity of Medical Devices and Biomaterials. ASAIO J 2020; 66:183-189. [PMID: 30807378 PMCID: PMC10370649 DOI: 10.1097/mat.0000000000000958] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A reliable in vitro dynamic test method to evaluate device thrombogenicity is very important for the improvement of the design and safety of blood-contacting medical devices, while reducing the use of animal studies. In this study, a recirculating flow loop system was developed for thrombogenicity testing, using donor sheep blood anticoagulated with Anticoagulant Citrate Dextrose Solution A (ACDA) and used within 24-36 hr postdraw. Immediately before testing, the blood was recalcified and heparinized to a donor-specific target concentration. The heparinization level was based on a static pretest, in which latex tubes were incubated at room temperature for 30 min in blood with a series of heparin concentrations and evaluated for thrombus deposition. For dynamic testing, blood was recirculated at room temperature through a polyvinyl chloride (PVC) tubing loop containing a test material for 1 hr at 200 ml/min using a roller pump. Nine materials were investigated: a negative control (polytetrafluoroethylene [PTFE]), a positive control (latex), and seven commonly used biomaterials including PVC, two silicones with different formulations (Q-Sil and V-Sil), nylon, polyurethane (PU), high-density polyethylene (HDPE), and polyether block amide (PEBAX). The results showed that latex was significantly more thrombogenic than all the other materials (p < 0.05), PVC and Q-Sil exhibited intermediate thrombogenicity with significantly more thrombus surface coverage and thrombus weight than PTFE (p < 0.05), whereas PTFE and the rest of the biomaterials had little to no thrombus deposition. In summary, the test loop system was able to effectively differentiate materials with different thrombogenic potentials.
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16
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Application of Piezo-Based Measuring System for Evaluation of Nucleic Acid-Based Drugs Influencing the Coagulation. SENSORS 2019; 20:s20010152. [PMID: 31881749 PMCID: PMC6982813 DOI: 10.3390/s20010152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/15/2019] [Accepted: 12/21/2019] [Indexed: 11/16/2022]
Abstract
During open-heart surgery, the status of hemostasis has to be constantly monitored to quickly and reliably detect bleeding or coagulation disorders. In this study, a novel optimized piezo-based measuring system (PIEZ) for rheological monitoring of hemostasis was established. The applicability of the PIEZ for the evaluation of nucleic acid-based drugs influencing coagulation was analyzed. Thrombin aptamers such as NU172 might be used during extracorporeal circulation (ECC) in combination with a reduced heparin concentration or for patients with heparin-induced thrombocytopenia (HIT). Therefore, the effect of the coagulation inhibiting thrombin aptamer NU172 and the abrogation by its complementary antidote sequence (AD) were investigated by this rheological PIEZ system. After the addition of different NU172 concentrations, the coagulation of fresh human blood was analyzed under static conditions and using an in vitro rotation model under dynamic conditions (simulating ECC). The clotting times (CTs) detected by PIEZ were compared to those obtained with a medical reference device, a ball coagulometer. Additionally, after the circulation of blood samples for 30 min at 37 °C, blood cell numbers, thrombin markers (thrombin-antithrombin III (TAT) and fibrinopeptide A (FPA)) and a platelet activation marker (β-thromboglobulin (β-TG)) were analyzed by enzyme-linked immunosorbent assays (ELISAs). The increase of NU172 concentration resulted in prolonged CTs, which were comparable between the reference ball coagulometer and the PIEZ, demonstrating the reliability of the new measuring system. Moreover, by looking at the slope of the linear regression of the viscous and elastic components, PIEZ also could provide information on the kinetics of the coagulation reaction. The shear viscosity at the end of the measurements (after 300 s) was indicative of clot firmness. Furthermore, the PIEZ was able to detect the abrogation of coagulation inhibition after the equimolar addition of NU172 aptamer´s AD. The obtained results showed that the established PIEZ is capable to dynamically measure the hemostasis status in whole blood and can be applied to analyze nucleic acid-based drugs influencing the coagulation.
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Braune S, Latour RA, Reinthaler M, Landmesser U, Lendlein A, Jung F. In Vitro Thrombogenicity Testing of Biomaterials. Adv Healthc Mater 2019; 8:e1900527. [PMID: 31612646 DOI: 10.1002/adhm.201900527] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/15/2019] [Indexed: 12/29/2022]
Abstract
The short- and long-term thrombogenicity of implant materials is still unpredictable, which is a significant challenge for the treatment of cardiovascular diseases. A knowledge-based approach for implementing biofunctions in materials requires a detailed understanding of the medical device in the biological system. In particular, the interplay between material and blood components/cells as well as standardized and commonly acknowledged in vitro test methods allowing a reproducible categorization of the material thrombogenicity requires further attention. Here, the status of in vitro thrombogenicity testing methods for biomaterials is reviewed, particularly taking in view the preparation of test materials and references, the selection and characterization of donors and blood samples, the prerequisites for reproducible approaches and applied test systems. Recent joint approaches in finding common standards for a reproducible testing are summarized and perspectives for a more disease oriented in vitro thrombogenicity testing are discussed.
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Affiliation(s)
- Steffen Braune
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies (BCRT)Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
| | - Robert A. Latour
- Rhodes Engineering Research CenterDepartment of BioengineeringClemson University Clemson SC 29634 USA
| | - Markus Reinthaler
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies (BCRT)Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
- Department for CardiologyCharité UniversitätsmedizinCampus Benjamin Franklin Hindenburgdamm 30 12203 Berlin Germany
| | - Ulf Landmesser
- Department for CardiologyCharité UniversitätsmedizinCampus Benjamin Franklin Hindenburgdamm 30 12203 Berlin Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies (BCRT)Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
- Institute of ChemistryUniversity of Potsdam Karl‐Liebknecht‐Strasse 24‐25 14476 Potsdam Germany
- Helmholtz Virtual Institute “Multifunctional Biomaterials for Medicine”Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
| | - Friedrich Jung
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies (BCRT)Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
- Helmholtz Virtual Institute “Multifunctional Biomaterials for Medicine”Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
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18
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Hajtuch J, Hante N, Tomczyk E, Wojcik M, Radomski MW, Santos-Martinez MJ, Inkielewicz-Stepniak I. Effects of functionalized silver nanoparticles on aggregation of human blood platelets. Int J Nanomedicine 2019; 14:7399-7417. [PMID: 31571858 PMCID: PMC6750026 DOI: 10.2147/ijn.s213499] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 08/07/2019] [Indexed: 12/19/2022] Open
Abstract
PURPOSE We studied the effects of silver nanoparticles (AgNPs) on human blood platelet function. We hypothesized that AgNPs, a known antimicrobial agent, can be used as blood-compatible, "ideal material'' in medical devices or as a drug delivery system. Therefore, the aim of the current study was to investigate if functionalized AgNPs affect platelet function and platelets as well as endothelial cell viability in vitro. METHODS AgNPs, functionalized with reduced glutathione (GSH), polyethylene glycol (PEG) and lipoic acid (LA) were synthesized. Quartz crystal microbalance with dissipation was used to measure the effect of AgNPs on platelet aggregation. Platelet aggregation was measured by changes in frequency and dissipation, and the presence of platelets on the sensor surface was confirmed and imaged by phase contrast microscopy. Flow cytometry was used to detect surface abundance of platelet receptors. Lactate dehydrogenase test was used to assess the potential cytotoxicity of AgNPs on human blood platelets, endothelial cells, and fibroblasts. Commercially available ELISA tests were used to measure the levels of thromboxane B2 and metalloproteinases (MMP-1, MMP-2) released by platelets as markers of platelet activation. RESULTS 2 nm AgNPs-GSH, 3.7 nm AgNPs-PEG both at 50 and 100 µg/mL, and 2.5 nm AgNPs-LA at 100 µg/mL reduced platelet aggregation, inhibited collagen-mediated increase in total P-selectin and GPIIb/IIIa, TXB2 formation, MMP-1, and MMP-2 release. The tested AgNPs concentrations were not cytotoxic as they did not affect, platelet, endothelial cell, or fibroblast viability. CONCLUSION All tested functionalized AgNPs inhibited platelet aggregation at nontoxic concentrations. Therefore, functionalized AgNPs can be used as an antiplatelet agent or in design and manufacturing of blood-facing medical devices, such as vascular grafts, stents, heart valves, and catheters.
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Affiliation(s)
- Justyna Hajtuch
- Department of Medical Chemistry, Medical University of Gdansk, Gdansk, Poland
| | - Nadhim Hante
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin2, Ireland
| | | | - Michal Wojcik
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland
| | - Marek Witold Radomski
- Department of Anatomy, Physiology and Pharmacology, University of Saskatchewan, Saskatoon, Canada
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19
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Gorbet M, Sperling C, Maitz MF, Siedlecki CA, Werner C, Sefton MV. The blood compatibility challenge. Part 3: Material associated activation of blood cascades and cells. Acta Biomater 2019; 94:25-32. [PMID: 31226478 DOI: 10.1016/j.actbio.2019.06.020] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 05/03/2019] [Accepted: 06/13/2019] [Indexed: 01/09/2023]
Abstract
Following protein adsorption/activation which is the first step after the contact of material surfaces and whole blood (part 2), fibrinogen is converted to fibrin and platelets become activated and assembled in the form of a thrombus. This thrombus formation is the key feature that needs to be minimized in the creation of materials with low thrombogenicity. Further aspects of blood compatibility that are important on their own are complement and leukocyte activation which are also important drivers of thrombus formation. Hence this review summarizes the state of knowledge on all of these cascades and cells and their interactions. For each cascade or cell type, the chapter distinguishes statements which are in widespread agreement from statements where there is less of a consensus. STATEMENT OF SIGNIFICANCE: This paper is part 3 of a series of 4 reviews discussing the problem of biomaterial associated thrombogenicity. The objective was to highlight features of broad agreement and provide commentary on those aspects of the problem that were subject to dispute. We hope that future investigators will update these reviews as new scholarship resolves the uncertainties of today.
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Affiliation(s)
- Maud Gorbet
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Claudia Sperling
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
| | - Manfred F Maitz
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
| | - Christopher A Siedlecki
- Departments of Surgery and Bioengineering, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, United States
| | - Carsten Werner
- Institute Biofunctional Polymer Materials, Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
| | - Michael V Sefton
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.
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20
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Watanabe A, Miki N. Connecting Mechanism for Artificial Blood Vessels with High Biocompatibility. MICROMACHINES 2019; 10:mi10070429. [PMID: 31261691 PMCID: PMC6680470 DOI: 10.3390/mi10070429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 06/23/2019] [Accepted: 06/25/2019] [Indexed: 02/04/2023]
Abstract
This paper proposes a connecting mechanism for artificial vessels, which can be attached/detached with ease and does not deteriorate the biocompatibility of the vessels at the joint. The inner surface of the artificial vessels is designed to have high biocompatibility. In order to make the best of the property, the proposed connecting mechanism contacts and fixes the two artificial vessels whose contacting edges are turned inside out. In this manner, blood flowing inside the vessels only has contact with the biocompatible surface. The biocompatibility, or biofouling at the joint was investigated after in vitro blood circulation tests for 72 h with scanning electron microscopy. Blood coagulation for a short term (120 min) was evaluated by activated partial thromboplastin time (APTT). A decrease of APTT was observed, although it was too small to conclude that the connector augmented the blood coagulation. The micro dialysis device which our group has developed as the artificial kidney was inserted into the blood circulation system with the connector. Decrease of APTT was similarly small. These experiments verified that the proposed connector can be readily applicable for implantable medical devices.
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Affiliation(s)
- Ai Watanabe
- Department of Mechanical Engineering, Keio university, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Norihisa Miki
- Department of Mechanical Engineering, Keio university, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan.
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21
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Reinthaler M, Johansson JB, Braune S, Al-Hindwan HSA, Lendlein A, Jung F. Shear-induced platelet adherence and activation in an in-vitro dynamic multiwell-plate system. Clin Hemorheol Microcirc 2019; 71:183-191. [PMID: 30584128 DOI: 10.3233/ch-189410] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Circulating blood cells are prone to varying flow conditions when contacting cardiovascular devices. For a profound understanding of the complex interplay between the blood components/cells and cardiovascular implant surfaces, testing under varying shear conditions is required. Here, we study the influence of arterial and venous shear conditions on the in vitro evaluation of the thrombogenicity of polymer-based implant materials.Medical grade poly(dimethyl siloxane) (PDMS), polyethylene terephthalate (PET) and polytetrafluoroethylene (PTFE) films were included as reference materials. The polymers were exposed to whole blood from healthy humans. Blood was agitated orbitally at low (venous shear stress: 2.8 dyne · cm-2) and high (arterial shear stress: 22.2 dyne · cm-2) agitation speeds in a well-plate based test system. Numbers of non-adherent platelets, platelet activation (P-Selectin positive platelets), platelet function (PFA100 closure times) and platelet adhesion (laser scanning microscopy (LSM)) were determined.Microscopic data and counting of the circulating cells revealed increasing numbers of material-surface adherent platelets with increasing agitation speed. Also, activation of the platelets was substantially increased when tested under the high shear conditions (P-Selectin levels, PFA-100 closure times). At low agitation speed, the platelet densities did not differ between the three materials. Tested at the high agitation speed, lowest platelet densities were observed on PDMS, intermediate levels on PET and highest on PTFE. While activation of the circulating platelets was affected by the implant surfaces in a similar manner, PFA closure times did not reflect this trend.Differences in the thrombogenicity of the studied polymers were more pronounced when tested at high agitation speed due to the induced shear stresses. Testing under varying shear stresses, thus, led to a different evaluation of the implant thrombogenicity, which emphasizes the need for testing under various flow conditions. Our data further confirmed earlier findings where the same reference implants were tested under static (and not dynamic) conditions and with fresh human platelet rich plasma instead of whole blood. This supports that the application of common reference materials may improve inter-study comparisons, even under varying test conditions.
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Affiliation(s)
- Markus Reinthaler
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Department of Cardiology, Medical Clinic II, Charité University Medicine, Campus Benjamin Franklin, Berlin, Germany
| | - Johan Bäckemo Johansson
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Steffen Braune
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Haitham Saleh Ali Al-Hindwan
- Department of Cardiology, Medical Clinic II, Charité University Medicine, Campus Benjamin Franklin, Berlin, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - Friedrich Jung
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies Helmholtz-Zentrum Geesthacht, Teltow, Germany
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Mukhopadhyay S, Veroniaina H, Chimombe T, Han L, Zhenghong W, Xiaole Q. Synthesis and compatibility evaluation of versatile mesoporous silica nanoparticles with red blood cells: an overview. RSC Adv 2019; 9:35566-35578. [PMID: 35528069 PMCID: PMC9074774 DOI: 10.1039/c9ra06127d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 09/18/2019] [Indexed: 12/20/2022] Open
Abstract
Protean mesoporous silica nanoparticles are propitious candidates over decades for nanoscale drug delivery systems due to their unique characteristics, including changeable pore size, mesoporosity, high drug loading capacity and biodegradability.
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Affiliation(s)
- Subhankar Mukhopadhyay
- Key Laboratory of Modern Chinese Medicines
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | | | - Tadious Chimombe
- Key Laboratory of Modern Chinese Medicines
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Lidong Han
- Key Laboratory of Modern Chinese Medicines
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Wu Zhenghong
- Key Laboratory of Modern Chinese Medicines
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Qi Xiaole
- Key Laboratory of Modern Chinese Medicines
- China Pharmaceutical University
- Nanjing 210009
- PR China
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23
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Trunk S, Müllerbader P, Hennig U, Abel M, Koggel A, Stang K, Altreuter Y, Steger V, Schlensak C, Wendel HP, Stoppelkamp S. Inflammatory potential of cotton-based surgically invasive devices: Implications for cardiac surgery. J Biomed Mater Res B Appl Biomater 2018; 107:1877-1888. [PMID: 30467962 DOI: 10.1002/jbm.b.34280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 10/09/2018] [Accepted: 10/23/2018] [Indexed: 12/22/2022]
Abstract
Cotton-based surgical invasive devices with their desired hemostyptic properties have been used for decades in the surgical field. However, in cardiac surgery using the heart-lung machine with direct retransfusion of suction blood, activated blood may re-enter the circulation without filtration and may trigger a cascade reaction leading to systemic inflammation and thrombosis. We therefore set out to evaluate the inflammatory potential of untreated and pyrogen-impregnated cotton-based surgical invasive medical devices. After incubation of the swabs with whole blood or PBMC, the cell-free supernatant was investigated for IL1β and IL6. While the reaction of human whole blood toward cotton swabs could not be influenced by any sterilization technique, dry heat and gamma-irradiation were able to diminish the inflammatory reaction of PBMC toward the material and the used pyrogens. In conclusion, using PBMC in direct contact to cotton we are the first to establish a suitable test method for quantification of the pyrogenic/inflammatory activity of this material. The unaltered reaction of whole blood, however, suggests a crosstalk of cells and plasma proteins in the inflammation activation that is not prevented by sterilization of the swabs. This new in vitro testing methodology may help to better display the clinical situation during development of new materials. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1877-1888, 2019.
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Affiliation(s)
- Stefan Trunk
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
| | - Pia Müllerbader
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
| | - Ulrike Hennig
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
| | - Martin Abel
- Clinical Regulatory Affairs, Lohmann & Rauscher GmbH &Co KG, Neuwied, Germany
| | - Annette Koggel
- Clinical Regulatory Affairs, Lohmann & Rauscher GmbH &Co KG, Neuwied, Germany
| | - Katharina Stang
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
| | - Yvonne Altreuter
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
| | - Volker Steger
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
| | - Christian Schlensak
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
| | - Hans P Wendel
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
| | - Sandra Stoppelkamp
- Clinical Research Laboratory, Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, Tuebingen University, Tuebingen, 72076, Germany
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24
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Weber M, Steinle H, Golombek S, Hann L, Schlensak C, Wendel HP, Avci-Adali M. Blood-Contacting Biomaterials: In Vitro Evaluation of the Hemocompatibility. Front Bioeng Biotechnol 2018; 6:99. [PMID: 30062094 PMCID: PMC6054932 DOI: 10.3389/fbioe.2018.00099] [Citation(s) in RCA: 317] [Impact Index Per Article: 52.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 06/26/2018] [Indexed: 12/15/2022] Open
Abstract
Hemocompatibility of blood-contacting biomaterials is one of the most important criteria for their successful in vivo applicability. Thus, extensive in vitro analyses according to ISO 10993-4 are required prior to clinical applications. In this review, we summarize essential aspects regarding the evaluation of the hemocompatibility of biomaterials and the required in vitro analyses for determining the blood compatibility. Static, agitated, or shear flow models are used to perform hemocompatibility studies. Before and after the incubation of the test material with fresh human blood, hemolysis, cell counts, and the activation of platelets, leukocytes, coagulation and complement system are analyzed. Furthermore, the surface of biomaterials are evaluated concerning attachment of blood cells, adsorption of proteins, and generation of thrombus and fibrin networks.
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Affiliation(s)
| | | | | | | | | | | | - Meltem Avci-Adali
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, Tübingen, Germany
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25
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He Q, Gao H, Xu LM, Lu Y, Wang C, Rui J, Fan H, Wang XY, Wang JZ. Analysis of IL-6 and IL-1β release in cryopreserved pooled human whole blood stimulated with endotoxin. Innate Immun 2018; 24:316-322. [PMID: 29793382 PMCID: PMC6830915 DOI: 10.1177/1753425918777596] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
To overcome the lack of availability of fresh human whole blood for pyrogen
detection, we explored the feasibility of utilizing cryopreserved pooled human
blood to detect the responses of the pro-inflammatory cytokines IL-6 and IL-1β
to LPS. Whole blood was obtained from five donors and incubated with LPS. The
quantities of pro-inflammatory cytokines were measured using ELISA, and the
results were compared among the samples. After the blood was cryopreserved with
Dimethyl sulfoxide (DMSO) (10% v/v) and stored for 4 mo at –196℃, the detection
limits of the IL-6/IL-1β responses to LPS were 0.2/0.4 endotoxin units (EU)/ml,
respectively, and IL-6/IL-1β release increased in response to LPS in a
dose-dependent manner. When these experiments were performed in three separate
laboratories, the within-laboratory reproducibility of the IL-6/IL-1β responses
was 100%/86.7%, 93.3%/100%, and 86.7%/80%, and the inter-laboratory
reproducibility was 92.9%/85.7%, 64.3%/63.6%, and 57.1%/66.7%, respectively. The
sensitivity (the probability of correctly classifying positive samples) and
specificity (the probability of correctly classifying negative samples) of the
IL-6/IL-1β tests were 81.7%/82.5% and 100%/100%, respectively. The results of
this study suggest that cryopreserved pooled blood is a convenient and viable
alternative for evaluating in vitro pyrogenicity. Additionally,
maintaining cryopreserved pooled blood promotes safety for the user because it
is released only after pretesting for infection parameters and has lower
variation than fresh donations from a variety of donors.
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Affiliation(s)
- Qing He
- 1 National Institutes for Food and Drug Control, Beijing, China
| | - Hua Gao
- 1 National Institutes for Food and Drug Control, Beijing, China
| | - Li-Ming Xu
- 1 National Institutes for Food and Drug Control, Beijing, China
| | - Yan Lu
- 1 National Institutes for Food and Drug Control, Beijing, China
| | - Chong Wang
- 2 Tianjin Institute for Drug Control, China
| | - Jing Rui
- 2 Tianjin Institute for Drug Control, China
| | - Hua Fan
- 3 Liaoning Institute for Drug Control, China
| | | | - Jun-Zhi Wang
- 1 National Institutes for Food and Drug Control, Beijing, China
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26
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Braune S, Sperling C, Maitz MF, Steinseifer U, Clauser J, Hiebl B, Krajewski S, Wendel HP, Jung F. Evaluation of platelet adhesion and activation on polymers: Round-robin study to assess inter-center variability. Colloids Surf B Biointerfaces 2017; 158:416-422. [PMID: 28719863 DOI: 10.1016/j.colsurfb.2017.06.053] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 06/28/2017] [Accepted: 06/30/2017] [Indexed: 11/19/2022]
Abstract
The regulatory agencies provide recommendations rather than protocols or standard operation procedures for the hemocompatibility evaluation of novel materials e.g. for cardiovascular applications. Thus, there is a lack of specifications with regard to test setups and procedures. As a consequence, laboratories worldwide perform in vitro assays under substantially different test conditions, so that inter-laboratory and inter-study comparisons are impossible. Here, we report about a prospective, randomized and double-blind multicenter trial which demonstrates that standardization of in vitro test protocols allows a reproducible assessment of platelet adhesion and activation from fresh human platelet rich plasma as possible indicators of the thrombogenicity of cardiovascular implants. Standardization of the reported static in vitro setup resulted in a laboratory independent scoring of the following materials: poly(dimethyl siloxane) (PDMS), poly(ethylene terephthalate) (PET) and poly(tetrafluoro ethylene) (PTFE). The results of this in vitro study provide evidence that inter-laboratory and inter-study comparisons can be achieved for the evaluation of the adhesion and activation of platelets on blood-contacting biomaterials by stringent standardization of test protocols.
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Affiliation(s)
- S Braune
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - C Sperling
- Max Bergmann Center of Biomaterials Dresden, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - M F Maitz
- Max Bergmann Center of Biomaterials Dresden, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - U Steinseifer
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering Helmholtz-Institute, RWTH Aachen University, Aachen, Germany
| | - J Clauser
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering Helmholtz-Institute, RWTH Aachen University, Aachen, Germany
| | - B Hiebl
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - S Krajewski
- Department of Thoracic and Cardiovascular Surgery, University Medical Center Tübingen, Tübingen, Germany
| | - H P Wendel
- Department of Thoracic and Cardiovascular Surgery, University Medical Center Tübingen, Tübingen, Germany
| | - F Jung
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz-Zentrum Geesthacht, Teltow, Germany.
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27
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Poly(amino acid-hydroxyethyl methacrylate)s with chiral lysine and/or leucine side moieties and their antibacterial abilities for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:1112-1120. [DOI: 10.1016/j.msec.2017.03.177] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 02/07/2017] [Accepted: 03/21/2017] [Indexed: 12/27/2022]
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28
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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.
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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.
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Reviakine I, Jung F, Braune S, Brash JL, Latour R, Gorbet M, van Oeveren W. Stirred, shaken, or stagnant: What goes on at the blood-biomaterial interface. Blood Rev 2016; 31:11-21. [PMID: 27478147 DOI: 10.1016/j.blre.2016.07.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 07/08/2016] [Accepted: 07/12/2016] [Indexed: 01/15/2023]
Abstract
There is a widely recognized need to improve the performance of vascular implants and external medical devices that come into contact with blood by reducing adverse reactions they cause, such as thrombosis and inflammation. These reactions lead to major adverse cardiovascular events such as heart attacks and strokes. Currently, they are managed therapeutically. This need remains unmet by the biomaterials research community. Recognized stagnation of the blood-biomaterial interface research translates into waning interest from clinicians, funding agencies, and practitioners of adjacent fields. The purpose of this contribution is to stir things up. It follows the 2014 BloodSurf meeting (74th International IUVSTA Workshop on Blood-Biomaterial Interactions), offers reflections on the situation in the field, and a three-pronged strategy integrating different perspectives on the biological mechanisms underlying blood-biomaterial interactions. The success of this strategy depends on reengaging clinicians and on the renewed cooperation of the funding agencies to support long-term efforts.
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Affiliation(s)
- Ilya Reviakine
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; Department of Bioengineering, University of Washington, Seattle, WA 98105, USA.
| | - Friedrich Jung
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Kantstrasse 55, 14513 Teltow, Germany
| | - Steffen Braune
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies (BCRT), Helmholtz Zentrum Geesthacht, Kantstrasse 55, 14513 Teltow, Germany
| | - John L Brash
- Department of Chemical Engineering, School of Biomedical Engineering, McMaster University, Hamilton, Ontario, L8S 4L8, Canada
| | - Robert Latour
- Rhodes Engineering Research Center, Department of Bioengineering, Clemson University, Clemson, SC 29634, USA
| | - Maud Gorbet
- Department of Systems Design Engineering, Biomedical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Wim van Oeveren
- HaemoScan, Stavangerweg 23-23, 9723JC Groningen, The Netherlands
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30
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The Quest for Nonthrombotic Surface Modifications to Achieve Hemocompatibility of Implantable Devices. ASAIO J 2016; 61:623-34. [PMID: 26366685 DOI: 10.1097/mat.0000000000000283] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The use of blood-contacting implantable devices is limited by surface-induced thrombosis, which has led to the development of thromboresistant surfaces. Multidisciplinary efforts have promoted the development of surface modifications to minimize thrombosis by targeting surface-induced coagulation. To this date, no material has been identified that remains irrevocably hemocompatible with time but many options are now available with their own limitations. Essential to this review is the understanding of some of the challenges in this field and newer opportunities for hemocompatibility research. This report will also briefly review many of the achievements in the development of hemocompatible biomaterial coating, including surface modifications against protein adsorption and platelet adhesion, biomimetism, and endothelialization.
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31
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Anil M, Ayyildiz-Tamis D, Tasdemir S, Sendemir-Urkmez A, Gulce-Iz S. Bioinspired Materials and Biocompatibility. EMERGING RESEARCH ON BIOINSPIRED MATERIALS ENGINEERING 2016. [DOI: 10.4018/978-1-4666-9811-6.ch011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Material science and engineering are the sources of divergent emerging technologies, since all the modifications and developments are being made to reach a novel biomaterial to fulfill the requirements of biomedical applications, the first important feature is the biocompatibility of the new advanced material. In this chapter, the general biocompatibility concept, test systems to determine biocompatibility, examples of bioinspired materials and their altered biocompatibility and future expectations from these novel bioinspired materials will be discussed.
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Identification of Predictive Early Biomarkers for Sterile-SIRS after Cardiovascular Surgery. PLoS One 2015; 10:e0135527. [PMID: 26263001 PMCID: PMC4532358 DOI: 10.1371/journal.pone.0135527] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 07/22/2015] [Indexed: 12/21/2022] Open
Abstract
Systemic inflammatory response syndrome (SIRS) is a common complication after cardiovascular surgery that in severe cases can lead to multiple organ dysfunction syndrome and even death. We therefore set out to identify reliable early biomarkers for SIRS in a prospective small patient study for timely intervention. 21 Patients scheduled for planned cardiovascular surgery were recruited in the study, monitored for signs of SIRS and blood samples were taken to investigate biomarkers at pre-assigned time points: day of admission, start of surgery, end of surgery, days 1, 2, 3, 5 and 8 post surgery. Stored plasma and cryopreserved blood samples were analyzed for cytokine expression (IL1β, IL2, IL6, IL8, IL10, TNFα, IFNγ), other pro-inflammatory markers (sCD163, sTREM-1, ESM-1) and response to endotoxin. Acute phase proteins CRP, PCT and pro-inflammatory cytokines IL6 and IL8 were significantly increased (p<0.001) at the end of surgery in all patients but could not distinguish between groups. Normalization of samples revealed significant increases in IL1β changes (p<0.05) and decreased responses to endotoxin (p<0.01) in the SIRS group at the end of surgery. Soluble TREM-1 plasma concentrations were significantly increased in patients with SIRS (p<0.01). This small scale patient study could show that common sepsis markers PCT, CRP, IL6 and TNFα had low predictive value for early diagnosis of SIRS after cardiovascular surgery. A combination of normalized IL1β plasma levels, responses to endotoxin and soluble TREM-1 plasma concentrations at the end of surgery are predictive markers of SIRS development in this small scale study and could act as an indicator for starting early therapeutic interventions.
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