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Oxid Med Cell Longev. 2016;2016:4727415. doi: 10.1155/2016/4727415. Epub 2016 May 26.

Therapeutic Efficacy of Topically Applied Antioxidant Medicinal Plant Extracts in a Mouse Model of Experimental Dry Eye.

Author information

1
Department of Ophthalmology and Center for Creative Biomedical Scientists, Chonnam National University Medical School and Hospital, Gwangju 61469, Republic of Korea.
2
Department of Dermatology, Chonnam National University Medical School and Hospital, Gwangju 61469, Republic of Korea.
3
Eye Institute of Xiamen University, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen, Fujian 361100, China.

Abstract

PURPOSE:

To investigate the therapeutic effects of topical administration of antioxidant medicinal plant extracts in a mouse model of experimental dry eye (EDE).

METHODS:

Eye drops containing balanced salt solution (BSS) or 0.001%, 0.01%, and 0.1% extracts were applied for the treatment of EDE. Tear volume, tear film break-up time (BUT), and corneal fluorescein staining scores were measured 10 days after desiccating stress. In addition, we evaluated the levels of interleukin- (IL-) 1β, tumor necrosis factor- (TNF-) α, IL-6, interferon- (IFN-) γ, and IFN-γ associated chemokines, percentage of CD4+C-X-C chemokine receptor type 3 positive (CXCR3+) T cells, goblet cell density, number of 4-hydroxy-2-nonenal (4-HNE) positive cells, and extracellular reactive oxygen species (ROS) production.

RESULTS:

Compared to the EDE and BSS control groups, the mice treated with topical application of the 0.1% extract showed significant improvements in all clinical parameters, IL-1β, IL-6, TNF-α, and IFN-γ levels, percentage of CD4+CXCR3+ T cells, goblet cell density, number of 4-HNE-positive cells, and extracellular ROS production (P < 0.05).

CONCLUSIONS:

Topical application of 0.1% medicinal plant extracts improved clinical signs, decreased inflammation, and ameliorated oxidative stress marker and ROS production on the ocular surface of the EDE model mice.

PMID:
27313829
PMCID:
PMC4899589
DOI:
10.1155/2016/4727415
[Indexed for MEDLINE]
Free PMC Article

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