Expression and role of calcitonin gene-related peptide in mouse Aspergillus fumigatus keratitis
| Autor: | Min Yin, Cui Li, Xu-Dong Peng, Gui-Qiu Zhao, Yuan Wu, Heng-Rui Zheng, Qian Wang, Qiang Xu, Nan Jiang |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | International Journal of Ophthalmology, Vol 12, Iss 5, Pp 697-704 (2019) |
| Druh dokumentu: | article |
| ISSN: | 2222-3959 2227-4898 |
| DOI: | 10.18240/ijo.2019.05.01 |
| Popis: | AIM: To investigate the expression and role of calcitonin gene-related peptide (CGRP) in the mouse models induced by Aspergillus fumigatus (A. fumigatus). METHODS: C57BL/6 mice were randomized into a control group and A. fumigatus keratitis group. The cornea photography was assessed under the slit lamp and the clinical score was recorded after infection. Western blot, real-time polymerase chain reaction (PCR) and immunohistofluorescence analysis were applied to detect CGRP expression in cornea of both groups. In vitro, tests were conducted with C57BL/6 mice macrophages to investigate CGRP expression after interaction with A. fumigatus. Cytokines expression induced by exogenous CGRP and the antagonist CGRP8-37 in A. fumigatus-exposed macrophages was evaluated by real-time PCR and ELISA. RESULTS: The cornea expression of CGRP was significantly elevated in C57BL/6 mice corneas and macrophages after A. fumigatus infection. After treatment with exogenous CGRP, the levels of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and IL-6 were reduced, and IL-10 level was increased in the A. fumigatus stimulated-macrophages. However, IL-1β, TNF-α and IL-6 levels were upregulated after pretreatment of CGRP8-37. But the mRNA levels of MIP-2, TGF-β and IL-10 were not changed. CONCLUSION: This study provides evidence that A. fumigatus increased CGRP expression. CGRP may play a protective role against inflammation in A. fumigatus keratitis. |
| Databáze: | Directory of Open Access Journals |
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