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Issue
Korean Chemical Engineering Research,
Vol.46, No.2, 217-221, 2008
저주파수 초음파를 이용한 Lidocaine Gel의 피부투과 촉진 효과
Enhanced Transdermal Permeation Effects of Lidocaine Gel by Low Frequency Ultrasound
정대인, 이정우, 안효초, 양재헌, 김태열, 조성완, 김영일
다양한 초음파의 주파수와 강도 등의 물리적 인자에 대한 경피투과 촉진효과를 알아보기 위하여 lidocaine gel을 제조하고 hairless mouse의 피부를 이용하여 경피투과 촉진효과를 평가하였다. Lidocaine을 함유한 겔을 제조하여 안정성을 확인할 수 있었으며, 주파수에 따른 lidocaine의 경피투과량은 500 kHz 초음파의 경피투과량이 크게 증가하였으며, 특히 지속초음파에서 현저히 증가하였다. 초음파의 강도에 따른 lidocaine의 경피투과량은 강도가 높을수록 높게 나타났다. 500 kHz 초음파의 조사는 1 kHz에 비하여 flux를 유의성 있게 증가시켰으며, lag time을 상대적으로 지연되는 양상을 나타내었다. 따라서 현재 임상에서 가장 많이 사용하고 있는 1 kHz 초음파를 이용한 음파영동보다 500 kHz 초음파를 이용한 음파영동이 lidocaine의 투과량 증대를 위한 임상적 응용이 가능할 것으로 사료된다.
To investigate the enhancing effects in transdermal permeation of drug using newly designed ultrasound apparatus of 500 kHz, the transdermal permeation studies through the hairless mouse skin were conducted with lidocaine. The ultrasound apparatus of 500 kHz frequency and transducer were newly developed. The drug permeation studies were performed according to the ultrasound frequencies such as 1 MHz and 500 kHz at 1 W/cm2 in intensity in continuous mode or pulsed mode, respectively. The results on transdermal permeation of lidocaine according to ultrasound intensity showed that the drug permeation increased as the intensity was higher.
Keywords: Lidocaine; Low Frequency Phonophoresis; Transdermal Permeation
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