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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Development and cathodic iontophoretic permeation evaluation of liquid crystalline systems provided of retinoic acid microparticles

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Author(s):
Monteiro e Silva, Silas Arandas [1, 2] ; Ricci Leonardi, Gislaine [1, 2, 3]
Total Authors: 2
Affiliation:
[1] Fed Univ Sao Paulo UNIFESP, Med Dept, Sao Paulo - Brazil
[2] Univ Campinas UNICAMP, Fac Med Sci, Campinas - Brazil
[3] Univ Campinas UNICAMP, Fac Pharmaceut Sci, Campinas - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Cosmetic Dermatology; v. 20, n. 7 NOV 2020.
Web of Science Citations: 0
Abstract

Background The intracellular form of action of retinoids requires these agents to reach deeper layers of the skin with viable cells to ensure therapeutic efficiency. However, studies on swine skin models show that some retinoids have low skin permeability. Thus, the association of innovative formulations with technological strategies involving physical permeation promoters can be employed to increase the permeability of this active, ensuring a targeting effect of the active. Aims In this study, it was proposed the development and evaluation of the release and permeation profile of liquid crystalline systems with retinoic acid polymeric microparticles under passive or iontophoretic diffusional conditions. Methods For this study, release, permeation, and diffusional characterization assays were employed using the Franz diffusion cell model, associating or not the cathodic iontophoresis. Results Retinoic acid was considered stable in front of the electric current of 0.5mA/cm(2), because it did not show significant degradation (with maintenance from 96.03% to 98.57%), indicating the viability of such agents to be applied with iontophoresis. Controlled release profile was evidenced for microencapsulated systems. Comparatively, formulations F1, F3, and F5 presented a significantly higher RA release profile when compared to formulations with retinoic acid microencapsulated. A significant increase was observed in the absolute amount of RA retained in the skin with cathodic iontophoresis in all proposed formulations (P < .01). The increase was up to two times in relation to the passive condition. Conclusions The combination of iontophoresis technique with application of retinoic acid and microencapsulated retinoic acid allows the penetration of the active ingredient to deeper layers of the skin. (AU)

FAPESP's process: 15/02129-6 - DEVELOPMENT AND EVALUATION OF RETINOIC ACID DRUG DELIVERY SYSTEMS PROVIDED BY MICROPARTICLES OF K-CARRAGEENAN IN EMULSIFIED SYSTEMS CONSTITUTED, OR NOT, OF LIQUID CRISTALLINE STRUCTURES
Grantee:Gislaine Ricci Leonardi
Support type: Regular Research Grants