Volume 69, Issue 10 (5 2012)                   Tehran Univ Med J 2012, 69(10): 613-618 | Back to browse issues page

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MM S D, F N, A K, S M, SK H, A R L, et al . The effect of amniotic membrane transplantation in healing of primary stages of pseudomonas keratitis. Tehran Univ Med J 2012; 69 (10) :613-618
URL: http://tumj.tums.ac.ir/article-1-182-en.html
Abstract:   (8125 Views)

Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background: Human amniotic membrane (HAM) forms the inner wall of the membranous sac that surrounds and protects the embryo during gestation. The main advantages of amniotic membrane transplantation (AMT) in the treatment of bacterial keratitis are its epithelial bandage properties. Previous studies have documented the presence of some antimicrobial proteins and peptides in amniotic fluid such as lactoferrin, lysozyme, bactericidal or permeability increasing protein, calprotectin (MRP8/14 protein complex), LL37, and neutrophil defensins (Human Neutrophil Peptides, HNP 1-3). Furthermore, the amniotic membrane does not express HLA-A, B, C or DR surface antigens, which may help avoid rejection after its transplantation. Thus, it can be used as a biological immune barrier. The purpose of this study was to evaluate the effectiveness of the amniotic membrane's healing properties in rabbits with pseudomonas keratitis.
Methods : By using an animal model, 14 rabbits were divided into two groups of controls and cases. A syringe was used to inoculate the corneal stroma of the animals by Pseudomonas aeruginosa ATCC27853. After 20 hours pseudomonas keratitis was created and amniotic membrane was transplanted to the cornea of the case group. The infiltration size were observed on the first, third and seventh days after the experiment.
Results : Corneal perforation was seen in the controls (P<0.001) but amniotic membrane prevented perforation in the case group (P=0.02).
Conclusion: Transplantation of amniotic membrane in the primary stages of pseudomonas keratitis treatment remarkably prevents corneal perforation and it can be used to control the disease process.

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