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Complement System

Complement System

The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...

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Primed Mycobacterial Uveitis PMU as a Model for Post-Infectious Uveitis

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The third component of complement (C'3) level in patients with uveitis.

J Koliopoulos, G Theodossiadis, G Palimeris

Modern Problems in Ophthalmology

|January 1, 1976

Summary

This study measured the third component of complement (C3) in 23 endogenous uveitis patients. While overall C3 levels showed no significant difference, elevated C3 was noted in Eales' and Behçet's diseases.

Area of Science:

Ophthalmology
Immunology
Rheumatology

Background:

Endogenous uveitis is inflammation of the eye's middle layer.
The complement system, including C3, plays a role in inflammatory processes.
Specific complement component levels in uveitis subtypes are not fully understood.

Purpose of the Study:

To investigate the levels of the third component of complement (C3) in patients with endogenous uveitis.
To compare C3 levels in uveitis patients with healthy controls.
To explore potential correlations between C3 levels and specific uveitis diagnoses like Eales' disease and Behçet's disease.

Main Methods:

Quantification of C3 levels using the immunodiffusion method.
Analysis of C3 concentrations in a cohort of 23 endogenous uveitis cases.

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Statistical comparison of C3 levels between patient and control groups.

Main Results:

No statistically significant difference in overall C3 levels was observed between endogenous uveitis patients and normal controls.
Elevated C3 values were found in six cases of Eales' disease.
Increased C3 levels were also noted in three cases of Behçet's disease.

Conclusions:

Overall C3 levels do not appear to be a distinguishing biomarker for endogenous uveitis as a whole.
The elevated C3 findings in Eales' and Behçet's diseases warrant further investigation into the role of complement in these specific inflammatory conditions.
Further research is needed to elucidate the clinical significance of C3 variations in certain uveitis subtypes.