Abstract:
BACKGROUND:Betulinic acid (BA) is a lipophilic compound with proven beneficial results in topical inflammation. Nanogels (NG) are carriers of bioactive compounds with properties that make them good candidates to treat skin diseases. OBJECTIVE:The objective of this study was to evaluate the anti-inflammatory activity of BA carried in NG. METHODS:NG were composed of a nanoemulsion and a crosslinking agent (Carbopol 940®) applied at three concentrations (0.5, 1, and 1.5 %) and three activation times (6, 12 and 24 h). In order to select the optimal formulation, the NG were characterized mechanically and micro-structurally followed by evaluation of the BA anti-inflammatory activity in an in vivomodel of auricular edema. We determined the edema inhibition activity aspercent weight. Additionally, the anti-inflammatory activity of NG was validated through histological analysis. RESULTS:The formulation with the best viscoelastic properties was the one prepared with 0.5% carbopol and 6 h of activation. Microstructural examination of this formulation showed mostly spherical structures with a mean diameter of 65 nm. From the evaluation of edema and the histological analyses, we established that the NG of BA produced 52% inhibition. In contrast, a conventional gel and freeBA produced 28% and 19% inhibition, respectively. CONCLUSION:The NG of BA showed to be good vehicles to treat skin inflammation.
journal_name
Curr Drug Delivjournal_title
Current drug deliveryauthors
Sosa-Gutierrez D,Toro-Vazquez J,Cano-Sarmiento C,Grube-Pagola P,Aparicio-Saguilan A,Torres-Palacios C,Acosta-Osorio A,Garcia Hdoi
10.2174/1567201817999200817154003subject
Has Abstractpub_date
2020-08-17 00:00:00eissn
1567-2018issn
1875-5704pii
CDD-EPUB-109166pub_type
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更新日期:2019-01-01 00:00:00
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