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Analysis of the proteomic profile of chronic pressure ulcers

化学 角蛋白 糖基化 蛋白质亚单位 伤口愈合 分子生物学 受体 生物化学 病理 生物 免疫学 医学 基因
作者
Laura E. Edsberg,Jennifer T. Wyffels,Michael S. Brogan,Kristin M. Fries
出处
期刊:Wound Repair and Regeneration [Wiley]
卷期号:20 (3): 378-401 被引量:60
标识
DOI:10.1111/j.1524-475x.2012.00791.x
摘要

Abstract Analysis of the proteomic profile of pressure ulcers over time is a critical step in the identification of biomarkers of healing or nonhealing in pressure ulcers. The wound fluid from 32 subjects with 42 pressure ulcers was evaluated over 6 weeks at 15 time points. Samples specific to both the interior and the periphery of the wound bed were collected. Antibody screening arrays, isobaric tags for relative and absolute quantitation with mass spectrometry and multiplexed microarrays were used to characterize wound fluid and results were correlated with clinical outcome. Twenty‐one proteins were found to distinguish between healed and chronic wounds and 19 proteins were differentially expressed between the interior and periphery of wounds. Four proteins, pyruvate kinase isozymes M 1/ M 2, profilin‐1, Ig lambda‐1 chain C regions, and Ig gamma‐1 chain C region, were present in lower levels for periphery samples when compared to interior samples and six proteins, keratin, type II cytoskeletal 6 A ( KRT6A ), keratin, type I cytoskeletal 14, S 100 calcium binding proteins A 7, alpha‐1‐antitrypsin precursor, hemoglobin subunit alpha, and hemoglobin subunit beta, were present in higher levels in periphery samples when compared with interior samples. S 100 calcium binding protein A 6, S 100 calcium binding protein A 7, and soluble receptor for advanced glycation end‐products had higher levels in the periphery of chronic wounds vs. the interior in planar arrays. A significant temporal trend was noted for monokine induced by gamma interferon (MIG), synonomous with chemokine (C‐X‐C motif) ligand 9 (CXCL9), which increased as wounds healed and remained nearly constant for ulcers that were not approaching closure.
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