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- W2896004505 abstract "A remarkable challenge in myocardial tissue engineering is the development of biomimetic constructs that can potentially improve myocardial repair and regeneration. Polyurethane (PU) scaffolds are extensively utilized in the cardiovascular system. We have synthesized a new biodegradable poly(ester-ether urethane urea) (PEEUU) using a new and simple method. To enhance mechanical and physicochemical properties, the PEEUU was blended with polycaprolactone (PCL). We then fabricated a series of new PU–PCL scaffolds. The scaffolds were then characterized using SEM, porosity measurement, attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), DSC, water contact angle measurement, swelling measurement, in vitro degradation rate, and mechanical tests. Expression of the cardiac-specific proteins on the scaffolds was investigated using immunofluorescence staining and quantitative real-time PCR. The elasticity of blends increased with an increase of PEEUU. In the blend scaffolds, the size and interconnectivity of pores were in an appropriate range (142–170 μm) as reported in the literature. These blend scaffolds revealed high cell metabolic activity for cardiomyoblasts and also enabled cells to proliferate and express cardiac marker proteins at higher rates. Histological examination of subcutaneously transplanted scaffolds after two months revealed degradation in the blend scaffolds. It is demonstrated that functionality of cells is sensitive to the composition of biomaterials used, and the effective cell–biomaterial interactions are critical in order to create a functional tissue engineered product that allows seeded cells to develop their normal activity. The PEEUU–PCL blends could potentially provide a versatile platform to fabricate functional scaffolds with an effective cell–biomaterial interaction for cardiac tissue regeneration." @default.
- W2896004505 created "2018-10-26" @default.
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- W2896004505 date "2018-10-15" @default.
- W2896004505 modified "2023-09-30" @default.
- W2896004505 title "Polyurethane-Polycaprolactone Blend Patches: Scaffold Characterization and Cardiomyoblast Adhesion, Proliferation, and Function" @default.
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- W2896004505 doi "https://doi.org/10.1021/acsbiomaterials.8b00848" @default.
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