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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zhao, Guiqiu Liu, Ying Li, Cui Che, Chengye Jiang, Nan Lin, Jing Li, Na Hu, Liting |
| Abstract | PURPOSE: To determine the role of lectin-like oxidized low-density lipoprotein receptor 1 (LOX-1) in corneal epithelial cells exposed to fungus. METHODS: Thirteen corneas with fungal keratitis composed the experimental group. Ten healthy donor corneas were the control group. Corneal epithelium was scraped and LOX-1 mRNA tested. Immunostaining was used to detect LOX-1 protein. Human corneal epithelial cells (HCECs) were treated with 75% ethanol-killed Aspergillus fumigatus. LOX-1 was detected, and CXCL1, TNF- , IL-6, and dectin-1 levels were detected with or without neutralization of LOX-1. Rat fungal keratitis was established and LOX-1 was detected by PCR, immunostaining, and Western blot. Phosphorylated-p38MAPK (p-p38MAPK) protein; CXCL1, TNF- , and IL-6 mRNA levels; and myeloperoxidase (MPO) were tested before and after LOX-1 neutralization. RESULTS: LOX-1 was expressed in corneal epithelium. In vitro cellular experiment showed that LOX-1 was detected in normal HCECs, and LOX-1 mRNA increased after stimulation of A. fumigatus and peaked at 8 hours; LOX-1 protein expression increased after stimulation at 24 and 48 hours. Neutralization of LOX-1 decreased expression of CXCL1, TNF- , but did not change IL-6 or dectin-1 expression. Aspergillus fumigatus keratitis developed in rats activated p38MAPK and elevated the expression of CXCL1, TNF- , and IL-6 through LOX-1. LOX-1 neutralization reduced MPO levels. CONCLUSIONS: LOX-1 expressed in normal corneal epithelium and HCECs and A. fumigatus elevated the expression of CXCL1 and TNF- through LOX-1. Rat A. fumigatus keratitis activated p38MAPK and elevated the expression of CXCL1, TNF- , and IL-6 through LOX-1. |
| ISSN | 01460404 |
| e-ISSN | 15525783 |
| Journal | Investigative Opthalmology & Visual Science |
| Issue Number | 6 |
| Volume Number | 56 |
| Language | English |
| Publisher | Association for Research in Vision and Ophthalmology |
| Publisher Date | 2015-06-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Aspergillus Fumigatus Physiology Epithelium, Corneal Microbiology Eye Infections, Fungal Immunity, Innate Keratitis Scavenger Receptors, Class E Metabolism Animals Antibodies, Neutralizing Pharmacology Case-control Studies Disease Models, Animal Epithelial Cells Immunology Rna, Messenger Rats, Wistar Research Support, Non-u.s. Gov't Discipline Ophthalmology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ophthalmology Sensory Systems Cellular and Molecular Neuroscience |
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