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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Stern, Michael E. Lee, Hyun Soo Dana, Reza Chen, Yihe Schaumburg, Chris S. Kodati, Shilpa Sadrai, Zahra Stevenson, William Chauhan, Sunil K. Saban, Daniel R. |
| Description | Country affiliation: United States Author Affiliation: Chen Y ( Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114, USA.) |
| Abstract | PURPOSE: A majority of experimental data on dry eye disease (DED) immunopathogenesis have been derived from a murine model of DED that combines desiccating environmental stress with systemic muscarinic acetylcholine receptor (mAChR) inhibition. However, to our knowledge the effects of pharmacologic mAChR blockade on the pathogenesis of experimental DED have not been evaluated systemically. The purpose of our study was to investigate the differential effects of desiccating environmental stress and mAChR inhibition on the pathogenesis of DED. METHODS: DED was induced in female C57BL/6 mice by exposure to a desiccating environment in the controlled-environment chamber or to systemic scopolamine, or by performing extraorbital lacrimal gland excision. Clinical disease was assessed using corneal fluorescein staining (CFS) and the cotton thread test (CTT). Corneal CD11b(+) and conjunctival CD3(+) T-cell infiltration were evaluated by flow cytometry. T-cells from draining cervical lymph nodes (CLN) and distant inguinal lymph nodes (ILN) were analyzed for Th1, Th2, Th17, and Treg responses by flow cytometry and ELISA. RESULTS: Desiccating environmental stress and systemic mAChR blockade induced similar clinical signs of DED. However, desiccating environmental stress imparted higher conjunctival CD3(+) T-cell infiltration, and greater Th17-cell activity and Treg dysfunction than mAChR blockade, while mAChR blockade decreased tear secretion to a greater extent than desiccating environmental stress. Systemic mAChR blockade attenuated Th17 activity and enhanced Th2 and Treg responses without affecting Th1 activity. CONCLUSIONS: In vivo inhibition of mAChRs variably affects CD4(+) T-cell subsets, and desiccating environmental stress and systemic mAChR blockade induce DED through different primary pathogenic mechanisms. |
| ISSN | 01460404 |
| e-ISSN | 15525783 |
| DOI | 10.1167/iovs.12-11121 |
| Journal | Investigative Opthalmology & Visual Science |
| Issue Number | 4 |
| Volume Number | 54 |
| Language | English |
| Publisher | Association for Research in Vision and Ophthalmology |
| Publisher Date | 2013-04-03 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Dry Eye Syndromes Immunology Muscarinic Antagonists Pharmacology Scopolamine Hydrobromide Stress, Physiological T-lymphocyte Subsets Animals Cytokines Metabolism Disease Models, Animal Enzyme-linked Immunosorbent Assay Flow Cytometry Lacrimal Apparatus Surgery Lymph Nodes Mice Mice, Inbred C57bl Receptors, Muscarinic Physiology T-lymphocytes, Regulatory Th1 Cells Th17 Cells Th2 Cells Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Ophthalmology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ophthalmology Sensory Systems Cellular and Molecular Neuroscience |
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