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Merkle VM, Martin D, Hutchinson M, Tran PL, Behrens A, Hossainy S, Bluestein D, Wu X, Slepian MJ. Hemocompatibility of Poly(vinyl alcohol)-Gelatin Core-Shell Electrospun Nanofibers: A Scaffold for Modulating Platelet Deposition and Activation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8302-12. [PMID: 25815434 PMCID: PMC4545287 DOI: 10.1021/acsami.5b01671] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In this study, we evaluate coaxial electrospun nanofibers with gelatin in the shell and poly(vinyl alcohol) (PVA) in the core as a potential vascular material by determining fiber surface roughness, as well as human platelet deposition and activation under varying conditions. PVA scaffolds had the highest surface roughness (Ra=65.5±6.8 nm) but the lowest platelet deposition (34.2±5.8 platelets) in comparison to gelatin nanofibers (Ra=36.8±3.0 nm and 168.9±29.8 platelets) and coaxial nanofibers (1 Gel:1 PVA coaxial, Ra=24.0±1.5 nm and 150.2±17.4 platelets. 3 Gel:1 PVA coaxial, Ra=37.1±2.8 nm and 167.8±15.4 platelets). Therefore, the chemical structure of the gelatin nanofibers dominated surface roughness in platelet deposition. Due to their increased stiffness, the coaxial nanofibers had the highest platelet activation rate, rate of thrombin formation, in comparison to gelatin and PVA fibers. Our studies indicate that mechanical stiffness is a dominating factor for platelet deposition and activation, followed by biochemical signals, and lastly surface roughness. Overall, these coaxial nanofibers are an appealing material for vascular applications by supporting cellular growth while minimizing platelet deposition and activation.
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Affiliation(s)
- Valerie M. Merkle
- Biomedical Engineering Graduate Interdisciplinary Program, The University of Arizona, Tucson, Arizona U.S.A
| | - Daniel Martin
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona U.S.A
| | - Marcus Hutchinson
- Department of Molecular and Cellular Biology, The University of Arizona, Tucson, Arizona U.S.A
| | - Phat L. Tran
- Sarver Heart Center, Department of Medicine, The University of Arizona, Tucson, Arizona, U.S.A
| | - Alana Behrens
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona U.S.A
| | - Samir Hossainy
- Sarver Heart Center, Department of Medicine, The University of Arizona, Tucson, Arizona, U.S.A
| | - Danny Bluestein
- Aerospace & Mechanical Engineering Department, The University of Arizona, Tucson, Arizona, U.S.A
| | - Xiaoyi Wu
- Biomedical Engineering Graduate Interdisciplinary Program, The University of Arizona, Tucson, Arizona U.S.A
- Corresponding author at: Aerospace and Mechanical Engineering Department, The University of Arizona, Tucson AZ 85721, USA. Tel.: 1-520-626-5854 Fax: 1-00-520-621-8191,
| | - Marvin J. Slepian
- Biomedical Engineering Graduate Interdisciplinary Program, The University of Arizona, Tucson, Arizona U.S.A
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona U.S.A
- Sarver Heart Center, Department of Medicine, The University of Arizona, Tucson, Arizona, U.S.A
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York U.S.A
- Corresponding author at: Sarver Heart Center, College of Medicine, The University of Arizona, Tucson AZ 85721, USA. Tel.: +1 520 626 8543,
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