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Ex vivo and In vivo Antiinflammatory Evaluations of Modulated Flavanones Solutions
1 , 2 , 3 , 4 , * 1 , * 5
1  Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Science, University of Barcelona, Av. Joan XXIII 29-31, Barcelona 08028, Spain
2  Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
3  Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma del Estado de Morelos; Av. Universidad 1001, Cuernavaca, Morelos, México.
4  Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma del Estado de Morelos; Av. Universidad 1001, Cuernavaca, Morelos, México
5  Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos; Av. Universidad 1001, Cuernavaca, Morelos, México

Abstract:

Interest has developed in natural molecules due to their clinically proven effects on skin deseases. Flavanones display several biological activities, and recently have been the focus of studies due to their anti-inflammatory effect. To improve their pharmacological profile four flavanones (A, B, C and D), were synthesized by structural modification of one flavanone natural 1 (semi-systematic name: (2S)-5,7-dihydroxy-6-prenylflavanone) extracted from Eysenhardtia platycarpa. The hydroalcoholic flavanone solutions (FS) were assayed to investigated their anti-inflammatory effect on two in vivo cutaneous inflammation models. Materials and methods: the topical anti-inflammatory effect of FS were evaluated against models of 12-O-tetradecanoylphorbol acetate (TPA) induced mouse ear edema and arachidonic acid (AA) in rat ear edema. Results: The vinylogous cyclized derivative (flavanone D) caused edema inhibition in the TPA- induced models with an inhibition of 96.27 ± 1.93 %; equally effective and potent in inhibiting the mouse ear edema as Indometacine had been. In addition, the AA-induced increase in ear thickness was reduced the most by the topical application of modulated ether (flavanone B). Conclusions: The in vivo and histology results suggest that flavanones B and D are effective as a topical anti-inflammatory agents in inflammatory processes. Thus, this new compounds represents a promising agent for the management of skin diseases with an inflammatory component.

Keywords: flavanones; Eysenhardtia platycarpa; anti-inflammatory activity
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