https://www.selleckchem.com/pr....oducts/phosphoenolpy
Circulating levels of procollagen type III N-terminalpeptide(P3NP) may reflect increased fibrosis of skeletal muscle and other tissues with aging. Herein, we tested if P3NP was associated with baseline and 7-year change in physical function. Participants (n=40 were from the Long Life Family Study, a study of exceptional familial longevity. Plasma P3NP concentration was measured using a sandwich enzyme-linked immunosorbent assay (inter-assay CVs 5.5%). At baseline and 7-year follow-up visits, phys