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Anesthetics and human epidermal growth factor incorporated into anti-adhesive nanofibers provide sustained pain relief and promote healing of surgical wounds

Authors Kao CW, Tseng YY, Liu KS, Liu YW, Chen JC, He HL, Kau YC, Liu SJ

Received 21 January 2019

Accepted for publication 11 April 2019

Published 29 May 2019 Volume 2019:14 Pages 4007—4016


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Lei Yang

Ching-Wei Kao,1,2 Yuan-Yun Tseng,3,4 Kuo-Sheng Liu,5 Yen-Wei Liu,5 Jin-Chung Chen,6 Hong-Lin He,7 Yi-Chuan Kau,8 Shih-Jung Liu2,9

1Department of Anesthesiology, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan; 2Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan; 3Division of Neurosurgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan; 4Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; 5Department of Thoracic and Cardiovascular Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan; 6Graduate Institute of Biomedical Science, Chang Gung University, Taoyuan, Taiwan; 7Department of Pathology, E-DA Hospital, I-Shou University, Kaohsiung, Taiwan; 8Department of Anesthesiology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan; 9Department of Orthopedic Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan

Background: This study exploited sheath-core-structured lidocaine/human EGF (hEGF)-loaded anti-adhesive poly[(d,l)-lactide-co-glycolide] (PLGA) nanofibrous films for surgical wounds via a co-axial electrospinning technique.
Materials and methods: After spinning, the properties of the co-axially spun membranes were characterized by scanning electron microscopy, laser-scanning confocal microscopy, Fourier Transform Infrared spectrometry, water contact angle measurements, and tensile tests. Furthermore, a HPLC analysis and an ELISA evaluated the in vitro and in vivo release curves of lidocaine and hEGF from the films.
Results: PLGA anti-adhesion nanofibers eluted high levels of lidocaine and hEGF for over 32 and 27 days, respectively, in vitro. The in vivo evaluation of post-surgery recovery in a rat model demonstrated that no adhesion was noticed in tissues at 2 weeks after surgery illustrating the anti-adhesive performance of the sheath-core-structured nanofibers. Nanofibrous films effectively released lidocaine and hEGF for >2 weeks in vivo. In addition, rats implanted with the lidocaine/hEGF nanofibrous membranes exhibited greater activities than the control demonstrating the pain relief efficacy of the films.
Conclusion: The empirical outcomes suggested that the anti-adhesive nanofibrous films with extended release of lidocaine and hEGF offer post-operative pain relief and wound healing.

Keywords: sheath-core nanofiber, anti-adhesive membrane, sustained elution, lidocaine, hEGF

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