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Therapeutic efficacy of trehalose eye drops for treatment of murine dry eye induced by an intelligently controlled environmental system.
Mol Vis. 2012; 18:317-29.MV

Abstract

PURPOSE

To determine whether eye drop instillation of the disaccharide trehalose (TT) alleviates ocular surface damage in a dry eye murine model.

METHODS

Dry eye was induced in mice using an intelligently controlled environmental system (ICES). After 21 days housed in the ICES without topical treatment, the mice were randomly divided into three groups: no eye drops (ICES) for three weeks, four times a day with PBS 0.01 M 10 µl/eye bilaterally (ICES+PBS), or with TT 87.6 mM 10 µl/eye bilaterally (ICES+TT). Another mice group that was not exposed to the ICES and received no treatment served as a control group (UT). The ocular surface integrity, in each group, was evaluated using Oregon Green dextran (OGD) and fluorescein staining. The expression and distribution of occludin, involucrin, and small proline-rich protein 2 were determined with immunohistology analysis on whole mounted corneas. Heat shock protein 70 (HSP70) and matrix metalloproteinase 9 (MMP-9) expression was estimated with immunohistology. Ocular surface inflammation associated with each treatment was estimated with real time-PCR of interleukin-1β (IL-1β), IL-2, IL-6, IL-17, and tumor necrosis factor-alpha in the conjunctiva.

RESULTS

OGD staining in the cornea epithelium was lower in the ICES+TT group than in the ICES and ICES+PBS groups. Corneal epithelial occludin staining was markedly more homogenous in the ICES+TT group than in ICES and ICES+PBS groups, and there were no desquamating apical epithelial cells. Involucrin and small proline-rich protein 2 labeling of whole mounted corneas revealed upregulation of their expression in the groups, which received no treatment or PBS instillation compared to the ICES+TT group. HSP70 and MMP-9 immunolabeling revealed a marked increase in corneal epithelial expression in response to the ICES. The group treated with trehalose showed a similar profile expression of HSP70 and MMP-9 as the control group (UT). Conjunctival IL-1β, IL-2, IL-6, IL-17, tumor necrosis factor-alpha (TNF-α), and MMP-9 mRNA expression was lower in the ICES+TT group than in the ICES or ICES+PBS group.

CONCLUSIONS

Trehalose application restored ocular surface integrity, suppressed inflammatory and proteolytic MMP-9 and HSP70 expression, and keratinization in mice with dry eye damaged by a desiccative model.

Authors+Show Affiliations

School of Ophthalmology and Optometry, Wenzhou Medical College, Wenzhou, Zhejiang, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22355243

Citation

Li, Jinyang, et al. "Therapeutic Efficacy of Trehalose Eye Drops for Treatment of Murine Dry Eye Induced By an Intelligently Controlled Environmental System." Molecular Vision, vol. 18, 2012, pp. 317-29.
Li J, Roubeix C, Wang Y, et al. Therapeutic efficacy of trehalose eye drops for treatment of murine dry eye induced by an intelligently controlled environmental system. Mol Vis. 2012;18:317-29.
Li, J., Roubeix, C., Wang, Y., Shi, S., Liu, G., Baudouin, C., & Chen, W. (2012). Therapeutic efficacy of trehalose eye drops for treatment of murine dry eye induced by an intelligently controlled environmental system. Molecular Vision, 18, 317-29.
Li J, et al. Therapeutic Efficacy of Trehalose Eye Drops for Treatment of Murine Dry Eye Induced By an Intelligently Controlled Environmental System. Mol Vis. 2012;18:317-29. PubMed PMID: 22355243.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Therapeutic efficacy of trehalose eye drops for treatment of murine dry eye induced by an intelligently controlled environmental system. AU - Li,Jinyang, AU - Roubeix,Christophe, AU - Wang,Yu, AU - Shi,Shuai, AU - Liu,Guoting, AU - Baudouin,Christophe, AU - Chen,Wei, Y1 - 2012/02/04/ PY - 2011/09/28/received PY - 2012/01/30/accepted PY - 2012/2/23/entrez PY - 2012/2/23/pubmed PY - 2012/5/1/medline SP - 317 EP - 29 JF - Molecular vision JO - Mol Vis VL - 18 N2 - PURPOSE: To determine whether eye drop instillation of the disaccharide trehalose (TT) alleviates ocular surface damage in a dry eye murine model. METHODS: Dry eye was induced in mice using an intelligently controlled environmental system (ICES). After 21 days housed in the ICES without topical treatment, the mice were randomly divided into three groups: no eye drops (ICES) for three weeks, four times a day with PBS 0.01 M 10 µl/eye bilaterally (ICES+PBS), or with TT 87.6 mM 10 µl/eye bilaterally (ICES+TT). Another mice group that was not exposed to the ICES and received no treatment served as a control group (UT). The ocular surface integrity, in each group, was evaluated using Oregon Green dextran (OGD) and fluorescein staining. The expression and distribution of occludin, involucrin, and small proline-rich protein 2 were determined with immunohistology analysis on whole mounted corneas. Heat shock protein 70 (HSP70) and matrix metalloproteinase 9 (MMP-9) expression was estimated with immunohistology. Ocular surface inflammation associated with each treatment was estimated with real time-PCR of interleukin-1β (IL-1β), IL-2, IL-6, IL-17, and tumor necrosis factor-alpha in the conjunctiva. RESULTS: OGD staining in the cornea epithelium was lower in the ICES+TT group than in the ICES and ICES+PBS groups. Corneal epithelial occludin staining was markedly more homogenous in the ICES+TT group than in ICES and ICES+PBS groups, and there were no desquamating apical epithelial cells. Involucrin and small proline-rich protein 2 labeling of whole mounted corneas revealed upregulation of their expression in the groups, which received no treatment or PBS instillation compared to the ICES+TT group. HSP70 and MMP-9 immunolabeling revealed a marked increase in corneal epithelial expression in response to the ICES. The group treated with trehalose showed a similar profile expression of HSP70 and MMP-9 as the control group (UT). Conjunctival IL-1β, IL-2, IL-6, IL-17, tumor necrosis factor-alpha (TNF-α), and MMP-9 mRNA expression was lower in the ICES+TT group than in the ICES or ICES+PBS group. CONCLUSIONS: Trehalose application restored ocular surface integrity, suppressed inflammatory and proteolytic MMP-9 and HSP70 expression, and keratinization in mice with dry eye damaged by a desiccative model. SN - 1090-0535 UR - https://www.unboundmedicine.com/medline/citation/22355243/Therapeutic_efficacy_of_trehalose_eye_drops_for_treatment_of_murine_dry_eye_induced_by_an_intelligently_controlled_environmental_system_ L2 - https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22355243/ DB - PRIME DP - Unbound Medicine ER -