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Effect of etanercept on post-traumatic proliferative vitreoretinopathy

International Journal of Ophthalmology(English edition) 2019年第5期12卷 731-738页

作者： Xiao-Feng Chen Mei Du Xiao-Hong Wang Hua Yan Department of Ophthalmology Tianjin Medical University General Hospital Ineye Hospital of Chengdu University of Traditional Chinese Medicine

AIM: To evaluate the safety and efficacy of intravitreal etanercept in the inhibiting of proliferative vitreoretinopathy(PVR) in a model of penetrating ocular injury. METHODS: Penetrating ocular injury on the retina of rabbit was induced, which was subsequently treated using 0.1 mL of sterile water or 0.1 m L of 12.5 mg/mL etanercept. The development of PVR was evaluated by fundus images, the B-scan, and the histopathology. The mRNA and protein expressions of tumor necrosis factor-α(TNF-α), transforming growth factor β(TGF-β) as well as connective tissue growth factor(CTGF) were examined at various time points after the etanercept injection with the reverse transcriptase-polymerase chain reaction(RT-PCR) and Western blotting, respectively. The safety of etanercept was evaluated by injection of 12.5 mg/mL etanercept into a normal rabbit eye without penetrating trauma. RESULTS: Clinical assessment and grading clearly demonstrated that the PVR formation was prevented in etanercept-treated animals, which was confirmed via fundus images, B-scan and histopathology. The RT-PCR and Western blotting showed increased mRNA and protein expression of TNF-α, TGF-β as well as CTGF in the retina of rabbits following penetrating ocular injury, and these factors were dramatically mitigated by ocular etanercept treatment. In addition, there was no adverse effect of etanercept intravitreal injection in normal eyes without penetrating trauma, it showed normal structure and histology. CONCLUSION: The etanercept is a potential therapy for inhibiting PVR development. To assess the clinic application of the etanercept in preventing PVR, further clinical studies are required.

关键词： etanercept/rh tnfr-ig traumatic proliferative vitreoretinopathy TNF-α inhibitor/anti TNF-α rabbit

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