July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
Novel characterization and intravital imaging of dynamic conjunctival lymphangiogenesis after filtration surgery
Miao Zhang; Guangyu Li; Meng Shi; Lu Chen
Author Affiliations & Notes
  • Miao Zhang
    Vision Science Graduate Program, University of California, Berkeley, Berkeley, California, United States
    Center for Eye Disease and Development, Program in Vision Science, and School of Optometry, University of California, Berkeley, Berkeley, California, United States
  • Guangyu Li
    Vision Science Graduate Program, University of California, Berkeley, Berkeley, California, United States
    Center for Eye Disease and Development, Program in Vision Science, and School of Optometry, University of California, Berkeley, Berkeley, California, United States
  • Meng Shi
    Vision Science Graduate Program, University of California, Berkeley, Berkeley, California, United States
    Center for Eye Disease and Development, Program in Vision Science, and School of Optometry, University of California, Berkeley, Berkeley, California, United States
  • Lu Chen
    Vision Science Graduate Program, University of California, Berkeley, Berkeley, California, United States
    Center for Eye Disease and Development, Program in Vision Science, and School of Optometry, University of California, Berkeley, Berkeley, California, United States
  • Footnotes
    Commercial Relationships   Miao Zhang, None; Guangyu Li, None; Meng Shi, None; Lu Chen, None
  • Footnotes
    Support  This work is supported in part by research grants from NIH and University of California at Berkeley (LC).
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 480. doi:
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      Miao Zhang, Guangyu Li, Meng Shi, Lu Chen; Novel characterization and intravital imaging of dynamic conjunctival lymphangiogenesis after filtration surgery. Invest. Ophthalmol. Vis. Sci. 2018;59(9):480.

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Abstract

Purpose : Glaucoma is a leading cause of blindness that affects many people worldwide. Filtration surgery is a common procedure to lower IOP (intraocular pressure) and treat glaucoma. In this study, we investigated the effect of filtration surgery on conjunctival lymphatic vessels using the fluorescently labeled transgenic mice of Prox-1, the master control gene for lymphatic development.

Methods : Glaucoma filtration surgery was performed on transgenic mice of Prox-1-GFP (green fluorescent protein). Conjunctival follicular areas were examined in vivo for two weeks by an advanced live imaging system, ophthalmic slit-lamp biomicroscopy and OCT (optical coherence tomography). IOP was measured by a non-invasive TonoLab tonometer. Additionally, conjunctival tissues after the filtration surgery were immunostained for LYVE-1 (lymphatic vessel endothelial hyaluronan receptor 1), a lymphatic specific marker.

Results : IOP was lowered in the eyes after the filtration surgery. Newly formed Prox-1 positive vessels were observed in the follicular areas. These vessels elongated over our observational time window of two weeks after the surgery. The Prox-1 positive vessels also expressed LYVE-1, further confirming their lymphatic property.

Conclusions : This study provides the first evidence showing real-time and intravital processes of lymphangiogenesis in the conjunctiva after the filtration surgery. Further investigation may reveal new mechanisms and lymphatic-based therapy for glaucoma.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Attribution-NonCommercial-NoDerivatives
Copyright © 2015 Association for Research in Vision and Ophthalmology.
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