Measuring Blood Vessel Lining in People With Glaucoma
Studies the blood vessel lining in adults with open-angle glaucoma, an eye disease.
Plain-language title generated from the registry record
Registry title: Assessment of Endothelial Glycocalyx in Patients With Primary Open-angle Glaucoma
Key facts
- Where
- Paris, FranceSee the site
Where in France
- Hôpital Fondation A. de RothschildParis, FranceTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Fondation Ophtalmologique Adolphe de Rothschild
- Trial code
- NCT05264818
- Record updated
- 8 December 2025
- Original description
The glycocalyx is a fibrillary lining structure that covers the inner surface of blood vessels. Composed of glycoproteins and polysaccharides, it is an essential determinant of vascular endothelial physiology: it limits coagulation activation and adapts capillary perfusion. Studies have shown glycocalyx alteration in various vascular and autoimmune pathologies such as diabetes, high blood pressure, chronic renal failure, ischemic heart disease, stroke, dementia, septic shock, and several other inflammatory pathologies with a common basis in vascular insufficiency.Read full original descriptionShow less
Assessment of Endothelial Glycocalyx in Patients With Primary Open-angle Glaucoma: a Prospective Single-center Cross-sectional Case-control Study
The glycocalyx is a fibrillary lining structure that covers the inner surface of blood vessels. Composed of glycoproteins and polysaccharides, it is an essential determinant of vascular endothelial physiology: it limits coagulation activation and adapts capillary perfusion. Studies have shown glycocalyx alteration in various vascular and autoimmune pathologies such as diabetes, high blood pressure, chronic renal failure, ischemic heart disease, stroke, dementia, septic shock, and several other inflammatory pathologies with a common basis in vascular insufficiency.
Glaucoma is a progressive, chronic and asymptomatic optic neuropathy characterized by visual field damage and abnormalities of the optic nerve head. Two hypotheses have been proposed as a basis for this progressive damage:
* the mechanical theory, which explains the papillary excavation by a compression of the optic nerve head under the effect of high intraocular pressure; and * the ischemic theory, explained by a circulatory insufficiency at the level of the blood capillaries of the retina and especially of the optic nerve head. This latter theory is related to several pathologies that have circulatory insufficiency as common underlying pathophysiology, and in which damage to the glycocalyx has been well studied.
Glycocalyx damage has rarely been studied in glaucoma. Yang et al. showed that the glycocalyx, present in Schlem's canal, plays a major role in the transduction of shear stress and regulation of outflow resistance to the aqueous humor, which may constitute an interesting biomarker for glaucomatous pathologies.
Inclusion: Express consent to participate in the study; Only for case group: primary open angle glaucoma (defined as the presence of visual field damage attributed to glaucomatous optic neuropathy) in both eyes; Only for control group: Absence optic nerve pathology (including primary open angle glaucoma).
Exclusion: Renal insufficiency; Parkinson's disease; Alzheimer's disease; Antiphospholipid syndrome; Cancer for which treatment ended less than 2 years ago; Stroke less than 1 year ago; Myocardial infarction less than 1 year ago; Pregnant or breastfeeding woman; Sleep apnea.