AIM: To observe the presence and expression of indoleamine 2,3-dioxygenase (IDO) during the corneal immunity to Aspergillus fumigatus (A. fumigatus) in the murine models. METHODS: The murine model of fungal keratitis was established by smearing with colonies of A. fumigatus after scraping central epithelium of cornea and covering with contact lenses in C57BL/6 mice. The mice were randomly divided into control group, sham group and A. fumigatus keratitis group. The cornea was monitored daily using a slit lamp and recorded disease score after infection. Corneal lesion was detected by immunofluorescence staining. IDO mRNA and protein were also detected by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and Western blot. RESULTS: The disease score and slit lamp photography indicated that disease severity was consistent with corneal inflammation in the murine models, and the disease scores in A. fumigatus keratitis group were obviously higher than those in the sham group. By immunofluorescence staining, IDO was mainly localized in corneal epithelium and stroma in the murine corneal tissues with A. fumigatus keratitis. Compared with the sham group, IDO mRNA expression was significantly enhanced in corneal epithelium infected by A. fumigatus. Furthermore, IDO protein expression detected by Western blot was in accord with transcript levels of IDO mRNA measured by qRT-PCR. IDO protein expression was enhanced after A. fumigatus infection compared with the sham group. CONCLUSION: IDO is detected in corneal epithelium and stroma locally, which indicates IDO takes part in the pathogenesis of A. fumigatus keratitis and plays a key role in immune regulation at the early stage.
AIM: To observe the presence and expression of indoleamine 2,3-dioxygenase (IDO) during the corneal immunity to Aspergillus fumigatus (A. fumigatus) in the murine models. METHODS: The murine model of fungal keratitis was established by smearing with colonies of A. fumigatus after scraping central epithelium of cornea and covering with contact lenses in C57BL/6 mice. The mice were randomly divided into control group, sham group and A. fumigatuskeratitis group. The cornea was monitored daily using a slit lamp and recorded disease score after infection. Corneal lesion was detected by immunofluorescence staining. IDO mRNA and protein were also detected by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and Western blot. RESULTS: The disease score and slit lamp photography indicated that disease severity was consistent with corneal inflammation in the murine models, and the disease scores in A. fumigatuskeratitis group were obviously higher than those in the sham group. By immunofluorescence staining, IDO was mainly localized in corneal epithelium and stroma in the murine corneal tissues with A. fumigatuskeratitis. Compared with the sham group, IDO mRNA expression was significantly enhanced in corneal epithelium infected by A. fumigatus. Furthermore, IDO protein expression detected by Western blot was in accord with transcript levels of IDO mRNA measured by qRT-PCR. IDO protein expression was enhanced after A. fumigatusinfection compared with the sham group. CONCLUSION:IDO is detected in corneal epithelium and stroma locally, which indicates IDO takes part in the pathogenesis of A. fumigatuskeratitis and plays a key role in immune regulation at the early stage.
Authors: Francesca Fallarino; Ursula Grohmann; Sylvaine You; Barbara C McGrath; Douglas R Cavener; Carmine Vacca; Ciriana Orabona; Roberta Bianchi; Maria L Belladonna; Claudia Volpi; Pere Santamaria; Maria C Fioretti; Paolo Puccetti Journal: J Immunol Date: 2006-06-01 Impact factor: 5.422
Authors: Rossana G Iannitti; Agostinho Carvalho; Cristina Cunha; Antonella De Luca; Gloria Giovannini; Andrea Casagrande; Teresa Zelante; Carmine Vacca; Francesca Fallarino; Paolo Puccetti; Cristina Massi-Benedetti; Gloria Defilippi; Maria Russo; Luigi Porcaro; Carla Colombo; Luigi Ratclif; Fernando M De Benedictis; Luigina Romani Journal: Am J Respir Crit Care Med Date: 2013-01-10 Impact factor: 21.405