Abstract
Purpose
The purpose of this study was to compare the efficacy of allogeneic cultured limbal epithelial transplantation (ACLET) and cultivated oral mucosal epithelial transplantation (COMET) in treating total limbal stem cell deficiency (LSCD).
Methods
In this retrospective cohort study, 73 patients (76 eyes) with total LSCD, including 41 patients (42 eyes) treated with ACLET and 32 patients (34 eyes) receiving COMET, were evaluated. The age, gender and injury cause of all patients were recorded.
Results
The mean follow-up was 23.3 ± 9.9 months in the ACLET group and 16.1 ± 5.8 months in the COMET group. A higher incidence of persistent epithelial defect was observed after COMET (P = 0.023). The overall ocular surface grading scores were all lower in the ACLET group than in the COMET group at 3, 6, and 12 months after surgery and the last follow-up. Kaplan-Meier survival curve analysis demonstrated a significantly higher success rate of ACLET (71.4%), compared with that of COMET (52.9%; P = 0.043). The risk of graft failure was higher in patients with entropion and trichiasis, incomplete eyelid closure and treated with COMET. The graft failure risk rate after COMET was 3.5 times higher than that of ACLET.
Conclusions
For total LSCD patients, ACLET should be prioritized, since limbal epithelial cells have better ability to maintain corneal epithelial integrity and ocular surface stability and benefit the ocular surface when compared with oral mucosal epithelial cells. Preoperative and postoperative eyelid abnormalities should be corrected as early as possible.
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Funding
This study was supported by the Natural Science Foundation of Shandong Province (ZR2014HQ059) and the Young and Middle-Aged Scientists Research Awards Fund of Shandong Province (ZR2017BH004).
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Wang, J., Qi, X., Dong, Y. et al. Comparison of the efficacy of different cell sources for transplantation in total limbal stem cell deficiency. Graefes Arch Clin Exp Ophthalmol 257, 1253–1263 (2019). https://doi.org/10.1007/s00417-019-04316-z
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DOI: https://doi.org/10.1007/s00417-019-04316-z