Contact lenses contamination by Acanthamoeba spp. in Upper Egypt

<h4>Background</h4> Acanthamoeba spp. are one of the free-living amoeba that spread worldwide causing keratitis. Owing to the increase in the use of lenses, whether for medical or cosmetic purposes, the incidence of disease increases every year. Contamination of the lenses with the Acant...

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Autores principales: Faten A. M. Hassan, M. E. M. Tolba, Gamal H. Abed, H. M. Omar, Sara S. Abdel-Hakeem
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Publicado: Public Library of Science (PLoS) 2021
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spelling oai:doaj.org-article:c2d379abf5824b5e8a1bd8a538af9a942021-11-25T05:54:24ZContact lenses contamination by Acanthamoeba spp. in Upper Egypt1932-6203https://doaj.org/article/c2d379abf5824b5e8a1bd8a538af9a942021-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8592476/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4> Acanthamoeba spp. are one of the free-living amoeba that spread worldwide causing keratitis. Owing to the increase in the use of lenses, whether for medical or cosmetic purposes, the incidence of disease increases every year. Contamination of the lenses with the Acanthamoeba trophozoites or cysts may lead to eye infection and cause sight-threatening keratitis in human. We isolated Acanthamoeba spp. from new lenses, used lenses, and contact lens disinfecting solutions and identified them based on morphological characteristics and molecular test. <h4>Methods</h4> New and used lenses and contact lens disinfecting solutions were cultured on monogenic media. Light and scanning electron microscope was used to identify Acanthamoeba spp. morphological features. Genotype identification was also evaluated using PCR sequencing of 18S rRNA gene specific primer pair JDP1 and JDP2. <h4>Results</h4> A hundred samples were examined, 29 (29%) were infected with Acanthamoeba spp. That belonged to two strains of Acanthamoeba (Acanthamoeba 41 and Acanthamoeba 68). 18S rRNA of the Acanthamoeba 41 had 99.69% sequence identity to Acanthamoeba castellanii clone HDU-JUMS-2, whereas Acanthamoeba 68 had 99.74% similar pattern to that of Acanthamoeba sp. isolate T4 clone ac2t4 that are morphologically identified as Acanthamoeba polyphaga. The obtained data revealed that the isolated strains belong to T4 genotype that was evolutionarily similar to strains isolated in Iran. <h4>Conclusions</h4> Cosmetic lenses and disinfectant solutions are a major transmissible mode for infection. This genotype is common as the cause of Acanthamoeba keratitis. To avoid infection, care must be taken to clean the lenses and their preservative solutions and prevent contamination with the parasite.Faten A. M. HassanM. E. M. TolbaGamal H. AbedH. M. OmarSara S. Abdel-HakeemPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Faten A. M. Hassan
M. E. M. Tolba
Gamal H. Abed
H. M. Omar
Sara S. Abdel-Hakeem
Contact lenses contamination by Acanthamoeba spp. in Upper Egypt
description <h4>Background</h4> Acanthamoeba spp. are one of the free-living amoeba that spread worldwide causing keratitis. Owing to the increase in the use of lenses, whether for medical or cosmetic purposes, the incidence of disease increases every year. Contamination of the lenses with the Acanthamoeba trophozoites or cysts may lead to eye infection and cause sight-threatening keratitis in human. We isolated Acanthamoeba spp. from new lenses, used lenses, and contact lens disinfecting solutions and identified them based on morphological characteristics and molecular test. <h4>Methods</h4> New and used lenses and contact lens disinfecting solutions were cultured on monogenic media. Light and scanning electron microscope was used to identify Acanthamoeba spp. morphological features. Genotype identification was also evaluated using PCR sequencing of 18S rRNA gene specific primer pair JDP1 and JDP2. <h4>Results</h4> A hundred samples were examined, 29 (29%) were infected with Acanthamoeba spp. That belonged to two strains of Acanthamoeba (Acanthamoeba 41 and Acanthamoeba 68). 18S rRNA of the Acanthamoeba 41 had 99.69% sequence identity to Acanthamoeba castellanii clone HDU-JUMS-2, whereas Acanthamoeba 68 had 99.74% similar pattern to that of Acanthamoeba sp. isolate T4 clone ac2t4 that are morphologically identified as Acanthamoeba polyphaga. The obtained data revealed that the isolated strains belong to T4 genotype that was evolutionarily similar to strains isolated in Iran. <h4>Conclusions</h4> Cosmetic lenses and disinfectant solutions are a major transmissible mode for infection. This genotype is common as the cause of Acanthamoeba keratitis. To avoid infection, care must be taken to clean the lenses and their preservative solutions and prevent contamination with the parasite.
format article
author Faten A. M. Hassan
M. E. M. Tolba
Gamal H. Abed
H. M. Omar
Sara S. Abdel-Hakeem
author_facet Faten A. M. Hassan
M. E. M. Tolba
Gamal H. Abed
H. M. Omar
Sara S. Abdel-Hakeem
author_sort Faten A. M. Hassan
title Contact lenses contamination by Acanthamoeba spp. in Upper Egypt
title_short Contact lenses contamination by Acanthamoeba spp. in Upper Egypt
title_full Contact lenses contamination by Acanthamoeba spp. in Upper Egypt
title_fullStr Contact lenses contamination by Acanthamoeba spp. in Upper Egypt
title_full_unstemmed Contact lenses contamination by Acanthamoeba spp. in Upper Egypt
title_sort contact lenses contamination by acanthamoeba spp. in upper egypt
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/c2d379abf5824b5e8a1bd8a538af9a94
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