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Development of Multifunctional Commercial Pure Titanium-Polyethylene Glycol Drug-Eluting Substrates with Enhanced Optical and Antithrombotic Properties

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Abstract

Purpose

Development of multifunctional advanced stent implants (metal/polymer composite)—drug-eluting stents with superior material and optical properties is still a challenge. In this research work, multifunctional metal-polymer composite drug-eluting substrates (DES) for stent application were developed by using commercially pure titanium (cpTi) and polyethylene glycol (PEG).

Methods

Surface modifications on titanium substrates were carried out by sodium hydroxide under various concentrations; 5M (6 and 24 h) and 10M (6 and 24 h). It induces a nanoporous structure which facilitates the larger area for encapsulation of the drug, Aspirin (ASA) via intermolecular forces followed by polymer coating of PEG (MW-20,000) by physical adsorption process, which is structured as layer-by-layer gathering.

Results

The developed cpTi-PEG DES were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), optical energy bandgap, static contact angle measurement, antithrombotic and drug release studies. The development of sodium titanate oxide prompted surface nano-features revealed by SEM and XRD. Moreover, FTIR confirms the presence of ASA and PEG functional groups over the cpTi surface. Drug release studies fitted with Ritger–Peppas kinetic model (≤ 60%), which indicates the super case II transport mechanisms (n > 1). Further UV–visible absorbance spectrum was quantified by the Tauc plot, which shows the broadening of the energy bandgap (Eg). In addition, the shrink in blood clots was more around the Tib2/ASA/PEG.Please confirm the inserted city name in affiliations [1,2] are correct and amend if necessary.Yes, city name "Rourkela" is correct.

Conclusion

 Developed cpTi-PEG DES has improved optical properties and prevent thrombus formation which suggesting it a potential substrate to overcome prime clinical challenges.

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Authors and Affiliations

  1. Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India

    Monalisha Mohanta

  2. Department of Biotechnology & Medical Engineering, National Institute of Technology Rourkela, Room No. 206, Rourkela, Odisha, 769008, India

    A. Thirugnanam

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  1. Monalisha Mohanta
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Mohanta, M., Thirugnanam, A. Development of Multifunctional Commercial Pure Titanium-Polyethylene Glycol Drug-Eluting Substrates with Enhanced Optical and Antithrombotic Properties. Cardiovasc Eng Tech 14, 37–51 (2023). https://doi.org/10.1007/s13239-022-00637-z

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