Compositions for the treatment of peripheral ulcers of various origins

Example 1

Preparation of Aesculus Hippocastanum Bark Extract

[0033]Procyanidin A2 and esculoside are repeatedly extracted from 5 Kg of bark from finely ground Aesculus hippocastanum branches with 95% ethanol until exhausted. The extraction solvent is concentrated to an equal weight with the starting biomass, and the concentrate is filtered to eliminate undesirable substances. The filtrate is concentrated until dry under vacuum at a temperature not exceeding 40° C. 570 g of a beige extract with a 35% esculoside content and an 11.2% procyanidin A2 is obtained. This extract can be used “as is” in the formulations according to the invention.

Preparation of Echinacea Angustifolia Root Extract

[0034]Echinacoside, caffeoylquinic acids and isobutylamides are extracted from 2 Kg of finely ground Echinacea angustifolia roots with 95% ethanol at the temperature of 50° C. until exhausted. Thin-layer chromatography is used to test for exhaustion, with echinacoside as the marker. The extraction solvent is concentrated under vacuum at a temperature of 25° C., taking care not to distil the basic oil containing the isobutylamides in steam current. By concentrating the solvent until dry, 150 g of extract with a 4% echinacoside content and an 0.5% isobutylamide content is obtained. This extract can be used “as is” in the formulations according to the invention.

PHARMACOLOGICAL EXAMPLE

Effect on Ulcers Caused by Venous Stasis of the Lower Limbs

[0035]50 patients (10 per group), suffering from venous stasis ulcers of the lower limbs, not complicated by other vascular disorders, were included in the study.

[0036]The patients were treated with the preparation described in example 7, applied to the lesion twice a day. The treated lesions were then covered with a bandage to ensure that the cream was not removed, and to protect them against external agents and / or mechanical traumas. The lesions were monitored for 21 days, and re-epithelialisation was assessed by measuring the two diameters. The results were expressed as the mean of the two diameters measured.

[0037]The results are set out in the table below.

RE-EPITHELIALISATIONTREATMENT7 days14 days28 daysPlacebo0.02 V 0.010.01 ± 0.010.03 ± 0.02Preparation example 72.14 ± 0.73** 4.9 ± 1.01**8.30 ± 1.10**Placebo + Vaccinium0.10 ± 0.030.23 ± 0.13*0.50 ± 0.23*myrtillus 0.3%Placebo + Echinacea0.01 ± 0.010.20 ± 0.02*0.35 ± 0.02*