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Efficacy of Sodium Hyaluronate in Murine Diabetic Ocular Surface Diseases.
Cornea 2017 September
PURPOSE: To evaluate the efficacy of sodium hyaluronate (HA) eye drops for the treatment of diabetic ocular surface diseases in mice.
METHODS: Male 6- to 8-week-old C57BL/6 mice underwent induction of type 1 diabetes with intraperitoneal injections of streptozotocin, with normal mice as the control. Topical 0.3% HA, 0.1% HA, 0.4% polyethylene glycol eye drops, and normal saline were administered to diabetic mice with an intact or debrided corneal epithelium. Normal saline was applied in the controls. Corneal epithelial wound healing rate, corneal sensation, nerve fiber density, conjunctival goblet cell number, and MUC-5AC content were measured and compared.
RESULTS: Compared with the controls, topical 0.3% HA use in diabetic mice showed significant improvements in the corneal epithelial wound healing rate (48 hours: 91.5% ± 4.8% vs. 79.8% ± 6.1%; P < 0.05), corneal sensitivity (4.1 ± 0.3 cm vs. 3.5 ± 0.3 cm; P < 0.05), nerve fiber density (12.9% ± 2.3% vs. 6.6% ± 2.4%; P < 0.05), conjunctival goblet cell number (31.0 ± 8.4/100 μm vs. 19.6 ± 7.1/100 μm; P < 0.05), and MUC-5AC content (12.5 ± 1.4 ng/mg vs. 7.8 ± 1.5 ng/mg protein; P < 0.05). The beneficial effects of 0.3% HA were better than those of 0.1% HA and 0.4% polyethylene glycol.
CONCLUSIONS: Topical 0.3% HA treatment promoted corneal epithelial regeneration, improved corneal sensation, and increased density of corneal nerve fibers and conjunctival goblet cells in mice with diabetic ocular surface diseases.
METHODS: Male 6- to 8-week-old C57BL/6 mice underwent induction of type 1 diabetes with intraperitoneal injections of streptozotocin, with normal mice as the control. Topical 0.3% HA, 0.1% HA, 0.4% polyethylene glycol eye drops, and normal saline were administered to diabetic mice with an intact or debrided corneal epithelium. Normal saline was applied in the controls. Corneal epithelial wound healing rate, corneal sensation, nerve fiber density, conjunctival goblet cell number, and MUC-5AC content were measured and compared.
RESULTS: Compared with the controls, topical 0.3% HA use in diabetic mice showed significant improvements in the corneal epithelial wound healing rate (48 hours: 91.5% ± 4.8% vs. 79.8% ± 6.1%; P < 0.05), corneal sensitivity (4.1 ± 0.3 cm vs. 3.5 ± 0.3 cm; P < 0.05), nerve fiber density (12.9% ± 2.3% vs. 6.6% ± 2.4%; P < 0.05), conjunctival goblet cell number (31.0 ± 8.4/100 μm vs. 19.6 ± 7.1/100 μm; P < 0.05), and MUC-5AC content (12.5 ± 1.4 ng/mg vs. 7.8 ± 1.5 ng/mg protein; P < 0.05). The beneficial effects of 0.3% HA were better than those of 0.1% HA and 0.4% polyethylene glycol.
CONCLUSIONS: Topical 0.3% HA treatment promoted corneal epithelial regeneration, improved corneal sensation, and increased density of corneal nerve fibers and conjunctival goblet cells in mice with diabetic ocular surface diseases.
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