Document Detail


Biocompatibility of nanocomposites used for artificial conjunctiva: in vivo experiments.
MedLine Citation:
PMID:  17364729     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To evaluate the biocompatibility of nanocomposites used for artificial conjunctiva. METHODS: Fifty New Zealand white rabbits were used for the experiments. Nanocomposites of poly -caprolactone (PCL) and of PCL coated with polyvinyl alcohol (PCL+PVA), polyvinyl pyrrolidone (PCL+PVP), or chitosan (PCL+C), and amniotic membrane (AM) as a control, were cut into small disks with a diameter of 3.5 mm. The disks were inserted underneath the conjunctiva to measure their inflammation-inducing properties. To investigate epithelial adhesion and goblet cell differentiation, the disks were transplanted after round conjunctival excision. Cultivated conjunctival epithelial cells on nanocomposite were then transplanted onto the abdomen of Balb/c athymic mice. The number of inflammatory cells and the density of goblet cells were measured using hematoxylin and eosin, periodic-acid-Schiff, and immunohistochemistry after 2 weeks. RESULTS: The number of inflammatory cells found inside of the inserts was as follows: 21 +/- 4.9 for controls, 21 +/- 15.1 for PCL, 49.6 +/- 26.0 for PCL+PVP, 40.2 +/- 17.1 for PCL+C, and 13.8 +/- 3.9 for PCL+PVA. In PCL+PVA, the accumulation of inflammatory cells was significantly lower than in the controls (p < 0.01, Mann-Whitney U). The reepithelialization of conjunctival cells was accomplished in more than 75% of all disks except for the PCL+C. In addition, we found the differentiation of goblet cells in the following order from greatest to least: amniotic membrane, PCL, and PCL+PVP. CONCLUSIONS: Nanocomposites of PCL were biocompatible in rabbit conjunctiva, suggesting that PCL may be considered as a candidate for use in the development of artificial conjunctiva.
Authors:
Young Joo Shin; Hun Il Lee; Mee Kum Kim; Won Ryang Wee; Jin Hak Lee; Jeong Hwa Koh; Hyun Joo Lee; Jae Lim Lee; Byung Moo Min; Young Suk Sohn; Hak-Yong Kim
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Current eye research     Volume:  32     ISSN:  0271-3683     ISO Abbreviation:  Curr. Eye Res.     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2007-03-16     Completed Date:  2007-03-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8104312     Medline TA:  Curr Eye Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  1-10     Citation Subset:  IM    
Affiliation:
Department of Ophthalmology, Dongguk University College of Medicine, Donnguk University International Hospital. Goyang, Gyeonggi-do, Korea.
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MeSH Terms
Descriptor/Qualifier:
Animals
Artificial Organs*
Cell Adhesion / physiology
Cell Differentiation
Cell Transplantation
Chitosan
Coated Materials, Biocompatible*
Conjunctiva / cytology,  surgery*
Epithelial Cells / cytology,  transplantation
Female
Goblet Cells / cytology
Hexanoic Acids*
Lactones*
Male
Mice
Mice, Inbred BALB C
Mice, Nude
Nanocomposites*
Polyvinyl Alcohol
Povidone
Rabbits
Chemical
Reg. No./Substance:
0/Coated Materials, Biocompatible; 0/Hexanoic Acids; 0/Lactones; 502-44-3/caprolactone; 9002-89-5/Polyvinyl Alcohol; 9003-39-8/Povidone; 9012-76-4/Chitosan

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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