Abstract
Adhesions are bands of tissue that can form after the surgery and bind together the surrounding tissue in the vicinity of the surgical site. In this work, polyelectrolyte complex (PEC)-based membranes were developed and investigated for their potential application as anti-adhesion barriers after neurosurgery. The adhesion and migration behavior of fibroblast and mixed neuronal cells were also investigated. Fibroblasts cells neither adhered nor migrated onto the PEC material after 5 days in vitro. Similar behaviors were observed for neurons and astrocytes cells. Swelling experiments of these membranes showed that the membranes are extremely hygroscopic and absorb significant amount of water. Membranes containing 70% alginate absorbed the highest amount of water (442 ± 24% of dry wet). PEC content was highest in 50% alginate containing membranes (87.1 ± 6.7%). The membrane’s mechanical properties were attributed to combined contribution of water absorption and PEC content. Drug release profiles were investigated using albumin as a model drug. Membranes containing 70% alginate showed highest initial drug release rate followed by membranes containing 60 and 50% alginate. Membranes were stable and did not dissolve for 1 month in phosphate buffer and lysozyme solutions.
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Acknowledgments
This work was support by NJSCR #08-3080-SCR-E-0. We would also like to thank Drs. Wise Young and Dongming Sun for their scientific advisement. We would also like to acknowledge Namrata Kulkarni and Vikas Shah for their efforts.
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Associate Editor Scott I. Simon oversaw the review of this article.
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Verma, D., Previtera, M.L., Schloss, R. et al. Polyelectrolyte Complex Membranes for Prevention of Post-Surgical Adhesions in Neurosurgery. Ann Biomed Eng 40, 1949–1960 (2012). https://doi.org/10.1007/s10439-012-0564-x
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DOI: https://doi.org/10.1007/s10439-012-0564-x