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Related Experiment Video

Updated: Mar 22, 2026

Establishment of a Severe Dry Eye Model Using Complete Dacryoadenectomy in Rabbits

Establishment of a Severe Dry Eye Model Using Complete Dacryoadenectomy in Rabbits

Published on: January 8, 2020

Evaluating the Functionality of Conjunctiva Using a Rabbit Dry Eye Model.

Yuan Ning¹, Dhruva Bhattacharya², Richard E Jones²

¹Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning Province, Shenyang 115001, China; Department of Ophthalmology and Vision Science, University of Arizona College of Medicine, Tucson, AZ 85711, USA.

Journal of Ophthalmology

|April 19, 2016

Summary

This summary is machine-generated.

This study reveals elevated MUC5AC expression and inflammation in a rabbit dry eye model after gland excision. Electrophysiological changes were noted, highlighting the importance of dry eye biomarkers for ocular surface assessment.

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Area of Science:

Ophthalmology
Immunology
Physiology

Background:

Dry eye disease (DE) is a prevalent condition affecting ocular surface health.
Conjunctival goblet cells and mucins play a crucial role in maintaining the tear film.
Understanding DE pathogenesis requires robust animal models and reliable biomarkers.

Purpose of the Study:

To evaluate conjunctival functionality in a surgically induced rabbit dry eye model.
To assess the expression of key inflammatory markers and mucin in the conjunctiva.
To investigate the impact of epithelial sodium channel blockers on tear production and ocular surface electrophysiology.

Main Methods:

Surgical excision of nictitating membrane, lacrimal, and Harderian glands in rabbits.
Ocular surface staining (fluorescein/rose Bengal) and Schirmer testing before and after surgery.
Immunoblotting for interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), and MUC5AC protein; MUC5AC mRNA quantification.
Assessment of tear production and ocular surface potential differences (PD) with epithelial sodium channel (ENaC) blockers.

Main Results:

Increased corneal and conjunctival staining observed one month post-excision.
Elevated IL-1β and TNF-α levels indicated ocular inflammation.
Significantly increased MUC5AC protein and mRNA expression in the conjunctiva.
No improvement in tear production with ENaC blockers, but altered ocular surface PD.

Conclusions:

Conjunctival functionality is significantly altered in the rabbit dry eye model.
Elevated MUC5AC expression is a key finding in this DE model.
Ocular surface potential difference measurements reveal significant electrophysiological changes, suggesting DE-induced alterations.