Low-frequency dual-frequency ultrasound-mediated microbubble cavitation for transdermal minoxidil delivery and hair growth enhancement

Ultrasound (US) has been found to rejuvenate and invigorate the hair follicles, increase the size of hair shafts, and promote new hair growth. Our present study found that dual-frequency US-mediated microbubble (MB) cavitation significantly enhanced minoxidil (Mx) delivery in both in vitro and in vi...

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Veröffentlicht in:Scientific reports 2020-03, Vol.10 (1), p.4338, Article 4338
Hauptverfasser: Liao, Ai-Ho, Lin, Keng-Hsien, Chuang, Ho-Chiao, Tsai, Chih-Hung, Lin, Yi-Chun, Wang, Chih-Hung, Shih, Cheng-Ping, Liu, Hao-Li
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creator Liao, Ai-Ho
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Tsai, Chih-Hung
Lin, Yi-Chun
Wang, Chih-Hung
Shih, Cheng-Ping
Liu, Hao-Li
description Ultrasound (US) has been found to rejuvenate and invigorate the hair follicles, increase the size of hair shafts, and promote new hair growth. Our present study found that dual-frequency US-mediated microbubble (MB) cavitation significantly enhanced minoxidil (Mx) delivery in both in vitro and in vivo models, while increasing the hair growth efficacy compared to single-frequency US sonication. The in vitro experiments showed that cavitation activity was enhanced more significantly during dual-frequency sonication than single-frequency sonication in higher concentration of MBs. The pigskin penetration depth in the group in which dual-frequency US was combined with MBs was 1.54 and 2.86 times greater than for single-frequency US combined with MBs and in the control group, respectively; the corresponding increases in the release rate of Mx at 18 hours in in vitro Franz-diffusion-cell experiments were 24.9% and 43.7%. During 21 days of treatment in C57BL/6J mice experiments, the growth rate at day 11 in the group in which dual-frequency US was combined with MBs increased by 2.07 times compared to single-frequency US combined with MBs. These results indicate that dual-frequency US-mediated MB cavitation can significantly increase both skin permeability and transdermal drug delivery. At the same US power density, hair growth was greater in the group with dual-frequency US plus MBs than in the group with single-frequency US plus MBs, without damaging the skin in mice.
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During 21 days of treatment in C57BL/6J mice experiments, the growth rate at day 11 in the group in which dual-frequency US was combined with MBs increased by 2.07 times compared to single-frequency US combined with MBs. These results indicate that dual-frequency US-mediated MB cavitation can significantly increase both skin permeability and transdermal drug delivery. 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Our present study found that dual-frequency US-mediated microbubble (MB) cavitation significantly enhanced minoxidil (Mx) delivery in both in vitro and in vivo models, while increasing the hair growth efficacy compared to single-frequency US sonication. The in vitro experiments showed that cavitation activity was enhanced more significantly during dual-frequency sonication than single-frequency sonication in higher concentration of MBs. The pigskin penetration depth in the group in which dual-frequency US was combined with MBs was 1.54 and 2.86 times greater than for single-frequency US combined with MBs and in the control group, respectively; the corresponding increases in the release rate of Mx at 18 hours in in vitro Franz-diffusion-cell experiments were 24.9% and 43.7%. 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subjects 631/57
692/308
Administration, Cutaneous
Animals
Cavitation
Drug delivery
Drug Delivery Systems - methods
Drug Delivery Systems - standards
Experiments
Follicles
Growth rate
Hair
Hair - drug effects
Hair - growth & development
Hair Follicle - drug effects
Humanities and Social Sciences
Mice
Microbubbles
Minoxidil
Minoxidil - administration & dosage
Minoxidil - pharmacokinetics
Models, Animal
Models, Biological
multidisciplinary
Permeability
Science
Science (multidisciplinary)
Sonication
Transdermal medication
Ultrasonic imaging
Ultrasonic Waves
Ultrasound
title Low-frequency dual-frequency ultrasound-mediated microbubble cavitation for transdermal minoxidil delivery and hair growth enhancement
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