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Inflammatory responses after vitrectomy with vitreous substitutes in a rabbit model
Henrik Barth1, Sven Crafoord2, Karin Arnér3
1Department of Ophthalmology, Lund University, BMC D10, 22184, Lund, Sweden. henrik.barth@med.lu.se.
Summary
Healaflow® and balanced saline solution (BSS) showed minimal inflammatory reactions, unlike Bio-Alcamid® and silicone oil, which caused significant inflammation and gliosis. Healaflow® is a promising vitreous substitute.
Area of Science:
- Ophthalmology
- Biomaterials Science
- Immunology
Background:
- Vitreous substitutes are crucial for retinal detachment repair and vitreous humor replacement.
- Assessing the biocompatibility and inflammatory potential of these substitutes is essential for clinical application.
Purpose of the Study:
- To evaluate the in vivo inflammatory response of Healaflow®, Bio-Alcamid®, silicone oil, and balanced saline solution (BSS) after vitrectomy.
- To compare the inflammatory profiles of current and potential vitreous substitutes in a rabbit model.
Main Methods:
- Pars plana vitrectomy was performed in 60 pigmented rabbits.
- Eyes were injected with Healaflow®, Bio-Alcamid®, silicone oil, or BSS.
- Postoperative clinical and histological examinations included immunohistochemical analysis for inflammatory markers (GFAP, CD45, galectin-3, CD68, CD20).
Main Results:
- Healaflow® and BSS showed minimal macroscopic and histological inflammation.
- Bio-Alcamid® induced severe retinal inflammation and damage.
- Silicone oil also showed significant inflammation, gliosis (GFAP upregulation), and immune cell infiltration (CD45, CD68, CD20).
- Galectin-3 was upregulated in all groups.
Conclusions:
- Healaflow® elicits minimal inflammatory reactions, comparable to BSS.
- Bio-Alcamid® and silicone oil demonstrate significant inflammatory profiles and gliosis.
- Healaflow® shows potential as a safe vitreous substitute for clinical use.
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