Ceramides are lipids found in the outermost skin layer called the stratum corneum, which consists of dead skin cells and mainly serves as a physical barrier, researchers said. Ceramides’ main biological function is to differentiate and control how skin cells grow.
The scientists led by Lee Jeung-hoon at the Chungnam National University created synthetic ceramides, called pseudoceramides, to treat skin diseases such as atopic dermatitis, psoriasis, and glucocorticoid-induced epidermal atrophy, in which the skin shrinks due to skin cell loss.
They found three pseudoceramides -- called K6PC-4, K6PC-5, and K6PC-9 -- significantly increased the amount of proteins produced when skin cells differentiate. The results were obtained both on cultured skin cells and on a reconstituted epidermis.
The study that included researchers Kwon Yoo-bin, Kim Chang-deok, Youm Jong-kyung, Gwak Hyung-sub, Park Byeong-deog, Lee Byeung-hun, Saewha-jeon, Kim Bo-joong, Seo Young-joon and Park Jang-kyu is reported in the September issue of the Journal of Lipid Research.