by Peijuan Wang, Qianying Gao, Xiaofeng Lin, Shaochong Zhang, Jie Hu, Yaqin Liu, Nuo Xu, Jian Ge
To analyze the level of human inflammatory immune mediators in the intraocular fluid aspirated from foldable capsular vitreous body (FCVB) filled-eyes during FCVB removal surgery, 3 months after implantation. Methods
8 samples of intra-FCVB fluids (n?=?8) were collected from 8 FCVB filled patients in our previous FCVB exploratory clinical trial. The intra-FCVB fluids were aspirated from the FCVB filled-eyes during the FCVB removal surgeries at the third month. For the control groups, the vitreous fluids were collected from patients with idiopathic macular hole (n?=?9) or rhegmatogenous retinal detachment (n?=?6) during pars plana vitrectomy. A multiplex immunoassay was used to determine levels of 9 cytokines (IL-1ß, IL-2, IL-6, IL-8, IL-10, IL-17, TNF-a, IFN-? and VEGF) in these samples. The VEGF level of some intra-FCVB fluids (n?=?6) were re-tested using enzyme-linked immunosorbent assay (ELISA). Results
In the intra-FCVB fluids, 9 cytokines concentrations of most samples (n?=?5) measured by Multiplex immunoassay showed low values, except for Patient 02, 06, and 09. The VEGF concentrations of some intra-FCVB fluids (n?=?6) tested by ELISA were in accordance with Multiplex immunoassay results. For all eight patients (n?=?8), the concentrations of IL-1ß, IL-2, IL-6, TNF-a, IFN-? and VEGF were slightly higher as compared to the idiopathic macular hole control group. While, the concentrations of IL-8, IL-10, and IL-17 were not statistically significant different compared with the idiopathic macular hole control samples. Most cytokines concentrations (IL-2, IL-6, IL-8, IL-10, IL-17, TNF-a, IFN-?, VEGF) were not statistically significant different compared to the rhegmatogenous retinal detachment control group except IL-1ß. Conclusions
The FCVB had sufficient porosity to allow cytokines to pass through. This study first discovered that the FCVB possesses favorable permeability of proteins in the human eye.