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High resolution ultrasound imaging for repeated measure of wound tissue morphometry, biomechanics and hemodynamics under fetal, adult and diabetic conditions

Authors :
Brian C. Wulff
Fidel Soto-Gonzalez
Traci A. Wilgus
Mithun Sinha
Chandan K. Sen
Mohamed S. El Masry
Subhadip Ghatak
Surya Gnyawali
Sashwati Roy
Source :
PLoS ONE, Vol 15, Iss 11, p e0241831 (2020), PLoS ONE
Publication Year :
2020
Publisher :
Public Library of Science (PLoS), 2020.

Abstract

Non-invasive, repeated interrogation of the same wound is necessary to understand the tissue repair continuum. In this work, we sought to test the significance of non-invasive high-frequency high-resolution ultrasound technology for such interrogation. High-frequency high-resolution ultrasound imaging was employed to investigate wound healing under fetal and adult conditions. Quantitative tissue cellularity and elastic strain was obtained for visualization of unresolved inflammation using Vevo strain software. Hemodynamic properties of the blood flow in the artery supplying the wound-site were studied using color Doppler flow imaging. Non-invasive monitoring of fetal and adult wound healing provided unprecedented biomechanical and functional insight. Fetal wounds showed highly accelerated closure with transient perturbation of wound tissue cellularity. Fetal hemodynamics was unique in that sharp fall in arterial pulse pressure (APP) which was rapidly restored within 48h post-wounding. In adults, APP transiently increased post-wounding before returning to the pre-wounding levels by d10 post-wounding. The pattern of change in the elasticity of wound-edge tissue of diabetics was strikingly different. Severe strain acquired during the early inflammatory phase persisted with a slower recovery of elasticity compared to that of the non-diabetic group. Wound bed of adult diabetic mice (db/db) showed persistent hypercellularity compared to littermate controls (db/+) indicative of prolonged inflammation. Normal skin strain of db/+ and db/db were asynchronous. In db/db, severe strain acquired during the early inflammatory phase persisted with a slower recovery of elasticity compared to that of non-diabetics. This study showcases a versatile clinically relevant imaging platform suitable for real-time analyses of functional wound healing.

Details

ISSN :
19326203
Volume :
15
Database :
OpenAIRE
Journal :
PLOS ONE
Accession number :
edsair.doi.dedup.....2f6120a8d9205f360eddf2d9530fd44c
Full Text :
https://doi.org/10.1371/journal.pone.0241831