[HTML][HTML] Ultrasound-mediated EGF-coated-microbubble cavitation in dressings for wound-healing applications

AH Liao, CR Hung, HK Chen, CP Chiang - Scientific reports, 2018 - nature.com
AH Liao, CR Hung, HK Chen, CP Chiang
Scientific reports, 2018nature.com
The feasibility of ultrasound (US) controlled cavitation for transdermal drug delivery (TDD)
using gas-filled microbubbles (MBs) has been explored. However, liquid or gel-type MBs is
not easy used for TDD. The present study investigated a new treatment model for evaluating
the US-mediated liquid-type epidermal growth factor (EGF)-coated lysozyme microbubble
(LYMB) cavitation in a wound dressing for enhancing wound healing. The maximum loading
efficacy of EGF onto LYMBs was 19.40±0.04%. In terms of the in vitro treatment efficacy, the …
Abstract
The feasibility of ultrasound (US) controlled cavitation for transdermal drug delivery (TDD) using gas-filled microbubbles (MBs) has been explored. However, liquid or gel-type MBs is not easy used for TDD. The present study investigated a new treatment model for evaluating the US-mediated liquid-type epidermal growth factor (EGF)-coated lysozyme microbubble (LYMB) cavitation in a wound dressing for enhancing wound healing. The maximum loading efficacy of EGF onto LYMBs was 19.40 ± 0.04%. In terms of the in vitro treatment efficacy, the growth of Staphylococcus aureus was inhibited by 97.50 ± 1.50% in the group with LYMBs exposed to 3 W/cm2 US. During 21 days in vivo wound healing experiments, the recovery rate during the first 6 days was significant higher in the group with EGF-LYMB dressings and US exposure (day 6: 54.28 ± 3.26%) than in the control group (day 6: 26.36 ± 3.34%) (p < 0.05). Our results show that the new model can significantly reduce the treatment duration during wound healing.
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