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Chromaffin cell cultures and secretion assaysChromaffin cell cultures were prepared from bovine adrenal glands by collagenase digestion and further separated from debris and erythrocytes by centrifugation on Percoll gradients as described Reference 8-10. Briefly, cells were maintained in monolayer cultures at a density of 625,000 cells/cm2 and were used between the third and sixth day after plating. All the experiments were performed at 370C. Secreted [3H]noradrenaline was determined in digitonin-permeabilized cells as described Reference 8-10. The CPM released from control cells under basal conditions were ~ 3,000, and they were increased to ~ 11,000, when stimulated with 10 µM Ca2+. The total number of counts obtained from detergent-permeabilized cells was ~ 110,000. Thus, the normalized basal release represents the 3.5% of the total secretion, and the Ca2+ -evoked ~ 10%. Statistical significance was calculated using Student t-test with data from 4 or more independent experiments. For further clinical data on Argireline®
The anti-wrinkle and anti-aging properties of this hexapeptideAt a 10% inclusion rate of this non-toxic, non-irritant hexapeptide molecule, is was noted that it modulates the excessive stimulation of the facial muscles, relaxing facial tension and reduces the depth of already formed wrinkles. Active ingredients used in Créme de Vie |
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