title: Monitoring the Long-Term Degradation Behavior of Biomimetic Bioadhesive Using Wireless Magnetoelastic Sensor.
abstract: The degradation behavior of a tissue adhesive is critical to its ability to repair a wound while minimizing prolonged inflammatory response. Traditional degradation tests can be expensive to perform, as they require large numbers of samples. The potential for using magnetoelastic resonant sensors to track bioadhesive degradation behavior was investigated. Specifically, biomimetic poly (ethylene glycol)- (PEG-) based adhesive was coated onto magnetoelastic (ME) sensor strips. Adhesive-coated samples were submerged in solutions buffered at multiple pH levels (5.7, 7.4 and 10.0) at body temperature (37 °C) and the degradation behavior of the adhesive was tracked wirelessly by monitoring the changes in the resonant amplitude of the sensors for over 80 days. Adhesive incubated at pH 7.4 degraded over 75 days, which matched previously published data for bulk degradation behavior of the adhesive while utilizing significantly less material (∼10(3) times lower). Adhesive incubated at pH 10.0 degraded within 25 days while samples incubated at pH 5.7 did not completely degrade even after 80 days of incubation. As expected, the rate of degradation increased with increasing pH as the rate of ester bond hydrolysis is higher under basic conditions. As a result of requiring a significantly lower amount of samples compared to traditional methods, the ME sensing technology is highly attractive for fully characterizing the degradation behavior of tissue adhesives in a wide range of physiological conditions.
authors.forename: Meng-Hsien
authors.initials: MH
authors.lastname: Lin
authors.forename: Jonathan
authors.initials: J
authors.lastname: Anderson
authors.forename: Rattapol
authors.initials: R
authors.lastname: Pinnaratip
authors.forename: Hao
authors.initials: H
authors.lastname: Meng
authors.forename: Shari
authors.initials: S
authors.lastname: Konst
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: DeRouin
authors.forename: Rupak
authors.initials: R
authors.lastname: Rajachar
authors.forename: Keat Ghee
authors.initials: KG
authors.lastname: Ong
authors.forename: Bruce P
authors.initials: BP
authors.lastname: Lee
mesh_terms: D000269:Adhesives / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry*; D040761:Biomimetic Materials / Q000737:chemistry*; D008422:Materials Testing; D008991:Monitoring, Physiologic / Q000379:methods*; D011506:Proteins / Q000737:chemistry; D059015:Wireless Technology
chemical_list: D000269:Adhesives; D001672:Biocompatible Materials; D011506:Proteins; C037403:adhesive protein, mussel