Add time:07/25/2019         Source:sciencedirect.com

Incubation of neutral salt soluble type III pN-collagen with [14C]acetaldehyde in, vitro resulted in the formation of spontaneously stable acetaldehyde-protein adducts. This reaction occurred primarily at lysine residues and it was not affected by 0.2 – 2 mM concentrations of ascorbate but addition of sodiumcyanoborohydride increased the stable adducts by 3–5-fold. When confluent cultures of human skin fibroblasts were incubated with physiologically relevant concentrations of acetaldehyde, it became covalently bound to type III procollagen secreted into the medium. We propose that acetaldehyde binding to collagen fibrils occurs in, vivo following chronic alcohol consumption.

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