Distribution of polyamines in human epidermis

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Abstract
Consecutive sections through the epidermis were cut parallel to its surface, and the polyamine (PA) concentration in each section was measured by liquid chromatography. There was a constant decrease in PA concentration (expressed as nmol/mg DNA) from the deepest layer to the more superficial layers. Putrescine showed the greatest increase (+83%) (P less than 0.02). The elevations of spermidine and spermine levels were less marked, respectively +30% (P less than 0.05) and +27% (NS). Proliferating cells in the basal layer possess high polyamine levels and as they mature in the superficial layers their polyamine content decreases.

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