首页   按字顺浏览 期刊浏览 卷期浏览 Effects of Cryopreservation and Deconstruction on the Dermal Glycosaminoglycan Content ...
Effects of Cryopreservation and Deconstruction on the Dermal Glycosaminoglycan Content of Human Skin

 

作者: Matthew,   Poggi Matthew,   Klein Giselle,   Chapo Charles,  

 

期刊: Journal of Burn Care & Rehabilitation  (OVID Available online 1999)
卷期: Volume 20, issue 3  

页码: 201-206

 

ISSN:0273-8481

 

年代: 1999

 

出版商: OVID

 

数据来源: OVID

 

摘要:

Since the concept of a fabricated skin replacement was first proposed, it has been recognized that a permanent skin replacement must contain a functional complex structure consisting of epidermis integrated with dermis. Although a practical solution for the replacement of missing epidermis exists through the culture expansion of the autologous epidermis, a practical solution for permanently replacing missing dermis has not been achieved. While it is generally recognized that the insoluble matrix components—largely collagen and elastin—are essential, the role of other matrix components such as glycosaminoglycans (GAGs) and proteoglycans remains undefined. This article describes both the qualitative and quantitative GAG composition of fresh and cryopreserved human dermis. Through the use of 2 different colorimetric assays and cellulose acetate electrophoresis, we found the following: 1) the principal dermal GAGs are those of the heparin family; 2) dermatan sulfate is the second most predominant GAG component; 3) chondroitin-6-sulfate is found at concentrations of 2 orders of magnitude less than the heparins; and 4) hyaluronan and keratan sulfate were both found as only minor constituents. When the GAG composition of fresh skin was compared with that of cryopreserved skin, no significant differences were observed. This study also examined the time course of GAG leaching during the preparation of deconstructed human dermis, which is human dermis reduced to the native insoluble matrix components by exhaustive saline soaking. We found that GAG leaching was readily detectable even within the first day. Sixty percent of total GAG leaching occurred by day 7. These investigations establish a benchmark for the reproduction of GAGs in synthetic dermal constructs. Further, the results of the leaching study generate important considerations for short-term skin storage and long-term skin banking. Because GAG leaching commences immediately, appropriate precautions must be taken to minimize the potential functional compromise of cryopreserved human dermis. (J Burn Care Rehabil 1999;20:201–6)

 

点击下载:  PDF (453KB)



返 回