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Published on: June 13, 2013
Urinary neopterin in idiopathic retinal vasculitis
H E Palmer1, G Giovannoni, M R Stanford
1Medical Eye Unit, St Thomas's Hospital, London SE1 7EH, UK. g.wallace@kcl.ac.uk
The British Journal of Ophthalmology
|January 3, 2001
Summary
Urinary neopterin:creatinine (UNC) ratios are higher in patients with retinal vasculitis (RV) and during subjective flares. However, UNC ratios do not reliably monitor clinical RV disease activity.
Area of Science:
- Ophthalmology
- Immunology
Background:
- Idiopathic retinal vasculitis (RV) is an inflammatory condition affecting retinal blood vessels.
- Monitoring disease activity is crucial for effective management of RV.
Purpose of the Study:
- To investigate the relationship between urinary neopterin:creatinine (UNC) ratios and disease activity in patients with idiopathic RV.
- To assess the utility of UNC ratios as a biomarker for RV activity.
Main Methods:
- A prospective longitudinal study involving 18 patients with RV and 14 healthy controls.
- Weekly first morning urine samples and subjective RV activity diaries were collected over one year.
- Objective clinical assessments of RV disease activity were performed every 6-8 weeks.
Main Results:
- UNC ratios were significantly elevated in RV patients compared to controls.
- Higher UNC ratios correlated with subjective reports of RV flare-ups.
- Subjective RV activity was more frequent during concurrent infections.
- No significant difference in UNC ratios was observed between objective clinical relapse and non-relapse states.
Conclusions:
- Elevated neopterin levels indicate cell-mediated immune responses in RV.
- UNC ratios are not recommended for monitoring clinical disease activity in idiopathic retinal vasculitis.
