Nasal Recombinant Hirudin-2 Delivery : Absorption and Its Mechanism in Vivo and in Vitro Studies(Biopharmacy)
スポンサーリンク
概要
- 論文の詳細を見る
The objective of this study was to investigate the feasibility of systemic absorption of recombinant hirudin-2 (rHV2) by nasal delivery, and its possible absorption mechanism. The degradation of rHV2 in the nasal tissue homogenate and extracts of mucosae of rabbit, as well as the degradation inhibition of enzyme inhibitor (bacitracin) was evaluated. The bioavailability of rHV2 and the improvement with enhancers, after nasal administration in rats was investigated. For further understanding of the transport and uptake characteristics of rHV2, in vitro transport experiment under various conditions using diffusion chamber technique in excised rabbit nasal epithelium was performed. It was found that rHV2 underwent rapid degradation in rabbit nasal homogenate, but it was more stable in the extracts of nasal mucosae surface. Bacitracin was able to inhibit the degradation of rHV2 to certain extent. rHV2 was detected in the rat plasma by chromogenic substrate assay after nasal administration and some enhancers also significantly increased the nasal absorption of rHV2. The transport and uptake of rHV2 across nasal epithelium was concentration-dependent and unsaturated, and was significantly inhibited by low temperature, NaN_3, DNP and colchicines, while was less affected by alteration of transport direction. These results demonstrate that the possible absorption mechanism of rHV2 by nasal mucosa appears to be associated with the endocytosis as well as passive diffusion process.
- 公益社団法人日本薬学会の論文
- 2005-12-01
著者
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ZHANG Qiang
School of Sciences, Southwest Petroleum University
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Zhang Qiang
School Of Pharmaceutical Sciences And State Key Laboratory Of Natural And Biomimetic Drugs Peking Un
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Zhang Qiang
School Of Pharmaceutical Sciences Health Science Center Peking University
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ZHANG Yujie
Department of Chinese Pharmacy, P.O.B.3, Beijing University of Traditional Chinese Medicine
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SUN Yikun
Department of Chinese Pharmacy, P.O.B.3, Beijing University of Traditional Chinese Medicine
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SUN Jianning
Department of Chinese Pharmacy, P.O.B.3, Beijing University of Traditional Chinese Medicine
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WANG Xiaoliang
Department of Chinese Pharmacy, P.O.B.3, Beijing University of Traditional Chinese Medicine
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CHEN Mingxia
Department of Chinese Pharmacy, P.O.B.3, Beijing University of Traditional Chinese Medicine
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Wang Xiaoliang
Department Of Chinese Pharmacy P.o.b.3 Beijing University Of Traditional Chinese Medicine
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Zhang Yujie
Department Of Chinese Pharmacy P.o.b.3 Beijing University Of Traditional Chinese Medicine
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Sun Yikun
Department Of Chinese Pharmacy P.o.b.3 Beijing University Of Traditional Chinese Medicine
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Sun Jianning
Department Of Chinese Pharmacy P.o.b.3 Beijing University Of Traditional Chinese Medicine
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Chen Mingxia
Department Of Chinese Pharmacy P.o.b.3 Beijing University Of Traditional Chinese Medicine
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