Therapeutic efficacy of fibroblast growth factor 10 in a rabbit model of dry eye

Zheng,Wenjing; Ma,Mingming; Du,Ergang; Zhang,Zhengwei; Jiang,Kelimu; Gu,Qing; Ke,Bilian

doi:10.3892/mmr.2015.4368

Therapeutic efficacy of fibroblast growth factor 10 in a rabbit model of dry eye

Authors:
- Wenjing Zheng
- Mingming Ma
- Ergang Du
- Zhengwei Zhang
- Kelimu Jiang
- Qing Gu
- Bilian Ke
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Affiliations: Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, P.R. China, Department of Ophthalmology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
Published online on: September 25, 2015 https://doi.org/10.3892/mmr.2015.4368
Pages: 7344-7350
Copyright: © Zheng et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the present study was to investigate the therapeutic efficacy of fibroblast growth factor 10 (FGF10) in the promotion of healing, survival and expression of mucin in corneal epithelial cells in a rabbit dry eye model. A total of 12 healthy female New Zealand white rabbits were divided randomly into three groups. The lacrimal glands were injected with saline either alone (normal control group) or with concanavalin A (Con A), with either topical phosphate‑buffered saline (PBS; PBS control group) or 25 µg/ml FGF10 (FGF10 treatment group). Lacrimal gland inflammation, tear function, corneal epithelial cell integrity, cell apoptosis and mucin expression were subsequently assessed. Lacrimal gland tissue biopsies were performed in conjunction with histology and electron microscopy observations. Tear meniscus height (TMH) and tear meniscus area (TMA) were measured using Fourier domain‑optical coherence tomography. Tear membrane break‑up time (TBUT) was also assessed and corneal fluorescein staining was performed. The percentages of apoptotic corneal and conjunctival (Cj) epithelial cells (ECs) were counted using a terminal deoxynucleotidyl transferase‑mediated dUTP nick end labeling method. The mRNA expression levels of Muc1 were determined using reverse transcription‑quantitative polymerase chain reaction analyses. The TMH and TMA values of the PBS and treatment groups were found to be significantly reduced, compared with those of the normal control group 3 days after Con A injection. However, the TMH and TMA of the FGF10 treatment group were higher, compared with those of the PBS group 3 and 7 days after treatment, respectively. Furthermore, the FGF10 treatment group exhibited prolonged TBUT, reduced corneal fluorescein staining and repaired epithelial cell ultrastructure7 days after treatment. The percentages of apoptotic corneal‑ and Cj‑ECs in the FGF10 treatment group were significantly reduced, compared with those in the PBS group. FGF10 significantly induced the mRNA expression of Muc1 in the corneal epithelial cells, compared with the normal control group, and induced higher mRNA expression levels of Muc1 in the Cj‑ECs, compared with the PBS control group. In the present study, the rabbit dry eye model was successfully established 3 days after lacrimal gland Con A injection. FGF10 eye drops increased TMH and TMA, promoted corneal epithelial healing, reduced apoptosis of the corneal- and Cj-ECs and led to increased expression of Muc1.

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