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A study of the diffusion characteristics of normal, delipidized and relipidized articular cartilage using magnetic resonance imaging
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A study of the diffusion characteristics of normal, delipidized and relipidized articular cartilage using magnetic resonance imaging
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Journal Article
A study of the diffusion characteristics of normal, delipidized and relipidized articular cartilage using magnetic resonance imaging
2013
Overview
This paper assesses the capacity to provide semipermeability of the synthetic layer of surface-active phospholipids created to replace the depleted surface amorphous layer of articular cartilage. The surfaces of articular cartilage specimens in normal, delipidized, and relipidized conditions following incubation in dipalmitoyl-phosphatidylcholine and palmitoyl-oleoyl-phosphatidylcholine components of the joint lipid mixture were characterized nanoscopically with the atomic force microscope and also imaged as deuterium oxide (D
2
O) diffused transiently through these surfaces in a magnetic resonance imaging enclosure. The MR images were then used to determine the apparent diffusion coefficients in a purpose-built MATLAB
®
-based algorithm. Our results revealed that all surfaces were permeable to D
2
O, but that there was a significant difference in the semipermeability of the surfaces under the different conditions, relative to the apparent diffusion coefficients. Based on the results and observations, it can be concluded that the synthetic lipid that is deposited to replace the depleted SAL of articular cartilage is capable of inducing some level of semipermeability.
Publisher
Springer US,Springer,Springer Nature B.V
Subject
/ Biological and medical sciences
/ Biomedical Engineering and Bioengineering
/ Cartilage, Articular - chemistry
/ Ceramics
/ Chemistry and Materials Science
/ Dipalmitoyl phosphatidylcholine
/ Glass
/ Lecithin
/ Lipids
/ NMR
/ Regenerative Medicine/Tissue Engineering
/ Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
