TY - JOUR
A2 - Terrazas, Luis I.
AU - Omaña-Molina, Maritza
AU - González-Robles, Arturo
AU - Iliana Salazar-Villatoro, Lizbeth
AU - Lorenzo-Morales, Jacob
AU - Cristóbal-Ramos, Ana Ruth
AU - Hernández-Ramírez, Verónica Ivonne
AU - Talamás-Rohana, Patricia
AU - Méndez Cruz, Adolfo René
AU - Martínez-Palomo, Adolfo
PY - 2013
DA - 2013/01/01
TI - Reevaluating the Role of Acanthamoeba Proteases in Tissue Invasion: Observation of Cytopathogenic Mechanisms on MDCK Cell Monolayers and Hamster Corneal Cells
SP - 461329
VL - 2013
AB - The morphological analysis of the cytopathic effect on MDCK cell monolayers and hamster cornea and qualitative and quantitative analyses of conditioned medium and proteases were evaluated and compared between two strains of Acanthamoeba genotype T4. Further than highlighting the biological differences found between both strains, the most important observation in this study was the fact that proteases both in total extracts and in conditioned medium are apparently not determinant in tissue destruction. An interestingly finding was that no lysis of corneal tissue was observed as it was previously suggested. These results, together with previous studies, allow us to conclude that the invasion and disruption of corneal tissue is performed by the penetration of the amoebae through cell junctions, either by the action of proteases promoting cellular separation but not by their destruction and/or a mechanical effect exerted by amoebae. Therefore, contact-dependent mechanisms in Acanthamoeba pathogenesis are more relevant than it has been previously considered. This is supported because the phagocytosis of recently detached cells as well as those attached to the corneal epithelium leads to the modification of the cellular architecture facilitating the migration and destruction of deeper layers of the corneal epithelium.
SN - 2314-6133
UR - https://doi.org/10.1155/2013/461329
DO - 10.1155/2013/461329
JF - BioMed Research International
PB - Hindawi Publishing Corporation
KW -
ER -