Methods of treating skin barrier using compositions including ampelopsis grossedentata and albizia julibrissin extracts
a technology of ampelopsis grossedentata and composition, which is applied in the direction of drug composition, plant/algae/fungi/lichens ingredients, hair cosmetics, etc., can solve the problems of pathology of skin inflammation, decreased differential ability and metabolism of skin, and many skin problems, so as to improve the function of skin barrier and reduce skin inflammation.
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example 1
Preparation of Ampelopsis grossedentata Extract from Leaves (E1)
[0160]Ampelopsis grossedentata plants were collected in China. Species identification was based on gross morphological characteristics [Flora of China Editorial Committee. Flora Reipublicae Popularis Sinicae. Beijing: Science Press, 1998, 48: 53.]. Plants were cleaned of soil and debris and separated into aerial parts and roots. Approximately 1000 g of leaves were homogenized in a blender with 5000 mL of 95% ethanol / water; the suspension was maintained in constant motion for 24 hours. The resulting suspension was then filtered and dried under low pressure using a rotary evaporator not exceeding 40° C. After filtration, the left over raw material was again extracted as described above. The combined dry mass from both extractions was designated the crude extract, approximately 270 g, for a yield of 27.0% (E1).
[0161]A characteristic HPLC fingerprint of Ampelopsis grossedentata extract can be obtained at 292 nm with gradien...
example 2
Preparation of Albizia julibrissin Extract from Flowers (E2)
[0162]Albizia julibrissin plants were collected in China. Species identification was based on gross morphological characteristics [Flora of China Editorial Committee. Flora Reipublicae Popularis Sinicae. Beijing: Science Press, 1998, 39: 65]. Plants were cleaned of soil and debris and separated into aerial parts and roots. Approximately 2000 g of flowers were homogenized in a blender with 12,000 mL of 95% ethanol / water; the suspension was maintained in constant motion for 24 hours. The resulting suspension was then filtered and dried under low pressure using a rotary evaporator not exceeding 40° C. After filtration, the left over raw material was again extracted as described above. The combined dry mass from both extractions was designated the crude extract, approximately 144 g, for a yield of 7.2% (E2).
[0163]A characteristic HPLC fingerprint of Albizia Julibrissin extract can be obtained at 348 nm with gradient elute of A ...
example 3
Determination of Filaggrin Protein Promotion
[0164]Extracts E1, E2 and combinations of the two at 1:1 (0.001% E1+0.001% E2) were tested for filaggrin protein levels using the method of Assay 1 described above. The crude extract was diluted with DMSO (dimethyl sulfoxide) as a 10% solution. Then the diluted extract was added to the cell culture media. Additional DMSO was added so that the concentration of the extract in the cell culture media was 0.001% by weight and the amount of DMSO was 0.1% in the cell culture media. The blank control was the 0.1% DMSO solvent by weight in the cell culture media.
[0165]The results are given in Table 1 below.
TABLE 1Results of filaggrin protein promotion in a epidermal equivalent modelFilaggrin promotion over blank control (%)Average of Three Tests of Each Extract orExtract / s (wt %)Extract CombinationBlank Control—E1 (0.001)6.31E2 (0.001)−2.82E1 (0.002)3.32E2 (0.002)2.96E1 + E2 (0.001 + 0.001)12.90**p
[0166]Based on these result, it can be concluded t...
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