Carnitine analysis in pterygium.

Area of Science:

• Ophthalmology
• Metabolomics
• Biochemistry

Background:

• Pterygium is a common ocular surface condition.
• The metabolic alterations in pterygium tissue are not fully understood.

Purpose of the Study:

• To quantify free carnitine and acylcarnitine levels in pterygium and normal conjunctival tissues.
• To investigate the role of carnitine metabolism in pterygium pathogenesis at the metabolomics level.

Main Methods:

• Prospective, clinical randomized study comparing pterygium and conjunctival tissues from 29 patients.
• Carnitine levels measured using tandem mass spectrometry after tissue homogenization.
• Statistical analysis performed using the Wilcoxon signed-rank test.

Main Results:

• Significantly higher free carnitine (C0) levels were observed in pterygium tissue (p<0.001).
• Elevated levels of specific acylcarnitines (C2, C5, C5:1, C5DC, C16:1, C18, methylglutarylcarnitine) were found in pterygium tissue (p<0.05).

Conclusions:

• Increased carnitine levels in pterygium suggest accelerated cell metabolism due to chronic inflammation and premalignant characteristics.
• Elevated carnitine may inhibit apoptosis, contributing to pterygium development.
• Further research into carnitine profiles could elucidate pterygium pathogenesis.