Abstract
Wounds in adults and fetuses differ in their healing ability with respect to scar formation. In adults, wounds lacking the epidermis exhibit excess collagen production and scar formation. Fibroblasts synthesize and deposit a collagen rich extracellular matrix. The early migration and proliferation of fibroblasts in the wound area is implicated in wound scarring. We have synthesized a hydrogel from chitosan-polyvinyl pyrrolidone (PVP) and examined its effect on fibroblast growth modulationin vitro. The hydrogel was found to be hydrophilic as seen from its octane contact angle (141.2 ± 0.37ℴ). The hydrogel was non-toxic and biocompatible with fibroblasts and epithelial cells as confirmed by the 3(4,5-dimethylthiazolyl-2)-2,5-diphenyl tetrazolium bromide (MTT) assay. It showed dual properties by supporting growth of epithelial cells (SiHa) and selectively inhibiting fibroblast (NIH3T3) growth. Growth inhibition of fibroblasts resulted from their inability to attach on to the hydrogel. These findings are supported by image analysis, which revealed a significant difference (P < 0.05) between the number of fibroblasts attached to the hydrogel in tissue culture as compared to tissue culture treated polystyrene (TCPS) controls. However, no significant difference was observed (P > 0.05) in the number of epithelial (SiHa) cells attached on to the hydrogel as compared to the TCPS control. Althoughin vivo experiments are awaited, these findings point to the possible use of chitosan PVP hydrogels in wound-management.
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Risbud, M., Hardikar, A. & Bhonde, R. Growth modulation of fibroblasts by chitosan-polyvinyl pyrrolidone hydrogel: Implications for wound management?. J. Biosci. 25, 25–30 (2000). https://doi.org/10.1007/BF02985178
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DOI: https://doi.org/10.1007/BF02985178