Use of bovine pericardium for the treatment of anterior iatrogenic glottic web

Zapater, Enrique; Oishi, Natsuki; Arribas, María Dolores Carnicer; Hernández, R. Sánchez; López, I.; Basterra, J

doi:10.1002/lary.27715

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…Similarly, few effective adjuvant therapies are available for glottic webs beyond keels and stents 47 . Interest in improved management of webs is evidenced by recent studys exploring bovine pericardium as a potential graft material and advanced surgical closure techniques 48, 49 . Our novel patch could fill this role and be used with or without accompanying drug delivery.…”

Section: Discussionmentioning

confidence: 99%

Development of a Bioinspired, Self‐Adhering, and Drug‐Eluting Laryngotracheal Patch

et al. 2020

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Objectives/Hypothesis Novel laryngotracheal wound coverage devices are limited by complex anatomy, smooth surfaces, and dynamic pressure changes and airflow during breathing. We hypothesize that a bioinspired mucoadhesive patch mimicking how geckos climb smooth surfaces will permit sutureless wound coverage and also allow drug delivery. Study Design ex‐vivo. Methods Polycaprolactone (PCL) fibers were electrospun onto a substrate and polyethylene glycol (PEG) – acrylate flocks in varying densities were deposited to create a composite patch. Sample topography was assessed with laser profilometry, material stiffness with biaxial mechanical testing, and mucoadhesive testing determined cohesive material failure on porcine tracheal tissue. Degradation rate was measured over 21 days in vitro along with dexamethasone drug release profiles. Material handleability was evaluated via suture retention and in cadaveric larynges. Results Increased flocking density was inversely related to cohesive failure in mucoadhesive testing, with a flocking density of PCL‐PEG‐2XFLK increasing failure strength to 6880 ± 1810 Pa compared to 3028 ± 791 in PCL‐PEG‐4XFLK density and 1182 ± 262 in PCL‐PEG‐6XFLK density. The PCL‐PEG‐2XFLK specimens had a higher failure strength than PCL alone (1404 ± 545 Pa) or PCL‐PEG (2732 ± 840). Flocking progressively reduced composite stiffness from 1347 ± 15 to 763 ± 21 N/m. Degradation increased from 12% at 7 days to 16% after 10 days and 20% after 21 days. Cumulative dexamethasone release at 0.4 mg/cm2 concentration was maintained over 21 days. Optimized PCL‐PEG‐2XFLK density flocked patches were easy to maneuver endoscopically in laryngeal evaluation. Conclusions This novel, sutureless, patch is a mucoadhesive platform suitable to laryngeal and tracheal anatomy with drug delivery capability. Level of Evidence NA Laryngoscope, 131:1958–1966, 2021

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Section: Discussionmentioning

confidence: 99%