PMID- 20045944 OWN - NLM STAT- MEDLINE DCOM- 20100608 LR - 20231213 IS - 1347-5215 (Electronic) IS - 0918-6158 (Linking) VI - 33 IP - 1 DP - 2010 TI - Facilitated skin permeation of oregonin by elastic liposomal formulations and suppression of atopic dermatitis in NC/Nga mice. PG - 100-6 AB - To develop an external preparation of oregonin (ORG) for the treatment of atopic dermatitis (AD), conventional creams (CC) and elastic liposomes (EL) containing ORG have been formulated and examined for their in vitro skin permeation properties and in vivo therapeutic efficacy assessments. EL, consisting of soybean phosphatidylcholine and Tween 80 (85 : 15 w/w %), were of flexible nanocarriers: they were about 130 nm in size and had a 4-fold greater deformability index than conventional liposomes. In a skin permeation study using a Franz diffusion cell mounted with depilated mouse skin, liposomal systems were superior to cream, revealing greater flux values. Both CC and EL were diversified with the addition of Trans-activating transcriptional activator (Tat) peptide, a sort of cell penetrating peptide, and subjected to in vivo efficacy evaluations in NC/Nga mice with AD-like lesions. On clinical observation for skin severity, rapid and profound improvement was observed in the treatment group with Tat-added liposomes (EL/T), showing a significant difference (p<0.05) versus Tat-added cream. The results indicated that EL/T treatment is effective for normalizing the immune-related responses and alleviating AD, evaluated as changes in the levels of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin (IL)-4, immunoglobulin E (IgE), and eosinophils in skin or blood. FAU - Kang, Myung Joo AU - Kang MJ AD - Division of Pharmaceutical Sciences, College of Pharmacy, Chung-Ang University, Seoul, Korea. FAU - Eum, Jae Yoon AU - Eum JY FAU - Jeong, Mi Sook AU - Jeong MS FAU - Choi, Sun Eun AU - Choi SE FAU - Park, Sang Han AU - Park SH FAU - Cho, Hye In AU - Cho HI FAU - Cho, Chin Sung AU - Cho CS FAU - Seo, Seong Jun AU - Seo SJ FAU - Lee, Min Won AU - Lee MW FAU - Choi, Young Wook AU - Choi YW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Biol Pharm Bull JT - Biological & pharmaceutical bulletin JID - 9311984 RN - 0 (Dermatologic Agents) RN - 0 (Diarylheptanoids) RN - 0 (Dosage Forms) RN - 0 (Liposomes) RN - 0 (Phosphatidylcholines) RN - 0 (Plant Extracts) RN - 0 (Polysorbates) RN - 0 (Trans-Activators) RN - 0 (oregonin) SB - IM MH - Administration, Topical MH - Alnus/*chemistry MH - Animals MH - Dermatitis, Atopic/*drug therapy/metabolism/pathology MH - Dermatologic Agents/administration & dosage/*pharmacology MH - Diarylheptanoids/pharmacology/*therapeutic use MH - Dosage Forms MH - Elasticity MH - Female MH - Immune System/drug effects MH - *Liposomes MH - Male MH - Mice MH - Mice, Inbred Strains MH - Nanostructures MH - Permeability/drug effects MH - Phosphatidylcholines MH - Phytotherapy MH - Plant Extracts/pharmacology/*therapeutic use MH - Polysorbates MH - Severity of Illness Index MH - Skin/*drug effects MH - Glycine max/chemistry MH - Trans-Activators/pharmacology EDAT- 2010/01/05 06:00 MHDA- 2010/06/09 06:00 CRDT- 2010/01/05 06:00 PHST- 2010/01/05 06:00 [entrez] PHST- 2010/01/05 06:00 [pubmed] PHST- 2010/06/09 06:00 [medline] AID - JST.JSTAGE/bpb/33.100 [pii] AID - 10.1248/bpb.33.100 [doi] PST - ppublish SO - Biol Pharm Bull. 2010;33(1):100-6. doi: 10.1248/bpb.33.100.