Cultured pressure ulcer fibroblasts show replicative senescence with elevated production of plasmin, plasminogen activator inhibitor‐1, and transforming growth factor‐β1

Abstract excerpt

In a 16-patient study, cultured fibroblast populations from normal skin were able to replicate an average of 14.8 +/- 2.2 times before becoming senescent, while fibroblast populations from the ulcer bed reached the end of their replicative life span after 7.2 +/- 1.9 population doublings (p= 0.001). Fibroblast populations from 10 of 16 pressure ulcers became senescent after fewer than five population doublings,...

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