Related Experiment Videos
The effect of systemic decomplementation with cobra venom factor on corneal complement levels in guinea pigs
U Pleyer1, B J Mondino, H L Sumner
1Jules Stein Eye Institute, Los Angeles, CA.
Investigative Ophthalmology & Visual Science
|June 1, 1992
Summary
Systemic administration of cobra venom factor (CVF) significantly depletes complement in guinea pig serum and corneas. Corneal complement levels recover more slowly than serum levels, offering a new model for studying corneal injuries.
Area of Science:
- Immunology
- Ophthalmology
- Pharmacology
Background:
- The complement system plays a crucial role in immune responses and tissue homeostasis.
- Understanding complement's role in ocular tissues is vital for managing eye diseases.
- Cobra venom factor (CVF) is a known complement-activating agent.
Purpose of the Study:
- To investigate the impact of systemic cobra venom factor (CVF) administration on complement levels in guinea pig serum and corneas.
- To establish a model for studying complement-mediated corneal conditions.
Main Methods:
- Guinea pigs received repeated intraperitoneal injections of CVF.
- Serum and corneal complement activity were measured using hemolytic assays at various time points post-injection.
- Light microscopy was used to assess corneal tissue integrity.
Main Results:
- A significant decrease in serum and corneal hemolytic complement activity was observed following CVF administration.
- Corneal complement depletion and restoration lagged behind serum levels.
- No local tissue damage was observed in corneas during the period of complement depletion.
Conclusions:
- Systemic CVF administration effectively depletes complement in both serum and cornea.
- This study provides the first evidence of CVF-induced corneal complement depletion.
- The developed model can be utilized to explore the role of complement in corneal injuries.