Recent work quantifying tendon chemical shift information has reported resonances consistent with proteoglycan and lipid chemical groups. Currently, there is a lack of prior NMR studies of tendon available to interpret these signals and make assignments to matrix constituents. HR-MAS 1H-NMR is an ideal tool for resolving chemical composition and structure in semisolid tissues like tendon. This study reports 1H-NMR spectral assignments using 1D and 2D HR-MAS experiments in ex vivo tendon samples. Preliminary results show peaks attributed to residues comprising collagen fibrils, proteoglycans, lipids, and lactate. Ongoing work seeks to characterize 1H NMR signatures of healthy and injured tendon.
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