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Impaired systemic endothelial function in patients with pseudoexfoliation syndrome
Pinar Tuna Atalar1, Enver Atalar, Harun Kilic
1Ophthalmology Clinic, Ankara Numune Hospital, Ankara, Turkey.
International Heart Journal
|February 16, 2006
Summary
Patients with pseudoexfoliation syndrome (PEX) exhibit impaired systemic endothelial function, evidenced by reduced brachial artery dilation. This finding suggests a broader impact of PEX beyond the eye, affecting vascular health.
Area of Science:
- Ophthalmology
- Cardiovascular Research
- Vascular Biology
Background:
- Pseudoexfoliation syndrome (PEX) is a primary precursor to open-angle glaucoma.
- Accumulating evidence indicates pseudoexfoliative material disseminates systemically, impacting blood vessels.
- Endothelial dysfunction is a critical factor in various cardiovascular and ocular diseases.
Purpose of the Study:
- To investigate brachial artery endothelial function in patients diagnosed with pseudoexfoliation syndrome.
- To compare endothelial function between PEX patients and a healthy control cohort.
- To assess the relationship between PEX, glaucoma, and systemic vascular health.
Main Methods:
- Prospective study involving 23 PEX patients and 20 age/sex-matched controls.
- High-resolution ultrasound assessed brachial artery endothelial function via flow-mediated dilation (FMD) and nitroglycerin-mediated dilation (NTG).
- Exclusion criteria targeted individuals with pre-existing cardiovascular disease or other endothelial dysfunction risk factors.
Main Results:
- PEX patients demonstrated significantly diminished FMD (4.5% vs. 8.2%, P=0.01) compared to controls.
- NTG-mediated dilation was also significantly lower in PEX patients (10.9% vs. 15.8%, P=0.0001).
- No significant differences in dilation were observed between PEX patients with and without glaucoma.
Conclusions:
- Systemic endothelial dysfunction is a characteristic feature of pseudoexfoliation syndrome.
- PEX syndrome may represent a systemic condition with implications for vascular health.
- Further research is warranted to explore the systemic ramifications of PEX.
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