| Project/Area Number |
09672286
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
医薬分子機能学
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| Research Institution | Josai University |
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Principal Investigator |
SUGIBAYASHI Kenji Faculty of Pharmaceutical Sciences, Josai University, Professor, 薬学部, 教授 (00105834)
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| Co-Investigator(Kenkyū-buntansha) |
NATSUME Hideshi Faculty of Pharmaceutical Scienccs, Josai University, Lecturer, 薬学部, 講師 (40180533)
KIMURA Masayuki Department of Pharmacy Sciences, Saitama Medical Center, Saitama Medical School, Lecturer, 総合医療センター, 講師
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| Project Period (FY) |
1997 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1999: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | intravenous infusion / jet injector / iontophoresis / electroporation / transdermal absorption / liquid injector / powder injector |
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| Research Abstract |
Two methodologies for creating amd enlarging skin permeation Ionic of drug were examined, and the combined effect with iontophoresis (IP) was evaluated.
Skin permeation rate of diclofenac and angiotensin II as model drugs increased, by treatments with jet injector (JI) and constant voltage IP. In the combined use of JI and constant voltage IP, the permeation rate of drug was higher than these single uses. This combined effect is due to lowered skin resistance by JI. Controlling of skin permeation of drugs, however, was difficult during the constant voltage lP. JP and short term constant voltage IP followed by constant current IP may be the optimum way for the enhanced skin delivery of drug. Low voltage electroporation (EP) alone did not change the skin permeation of benzoic acid as a model drug, but improved the permeation by combined with IP.
In conclusion, further improvement of the skin permeability of drugs was achieved by treatment JI and/or EP to make pores in stratum corneum followed by IP. These meanes probably are useful for the development of new skin delivery systems of drugs including peptide and DNA.
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