Clinical trial Recruiting at 1 site Observational Ages 18 and up

How the blood-vessel lining and oxidative stress affect microcirculation in chronic kidney disease

Official title: The Role of Glycocalyx and Oxidative Stress in Endothelial Function (Part 1)

Run by Josip Juraj Strossmayer University of Osijek · NCT07437729 · Data updated 2026-11-12

This project will test whether changes in the blood-vessel lining (glycocalyx) and oxidative stress are linked to poorer small-vessel blood flow in people with chronic kidney disease compared with people who have high blood pressure and healthy volunteers.

More Chronic Kidney Disease trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment105 (estimated)
SponsorJosip Juraj Strossmayer University of Osijek
Academic / other
Locations1 site (Osijek)
StatusRecruiting
StartedOctober 1, 2025
Main results expectedSeptember 30, 2029
Study endsSeptember 30, 2029
Registry record updatedMarch 2, 2026
Trial IDNCT07437729 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with chronic kidney disease attributed to hypertension who are non-diabetic and non-smokers, along with comparison participants who have hypertension without kidney damage and healthy volunteers.

Probably not a fit

People with kidney disease from other causes, patients with diabetes, current smokers, or those with inflammatory or endocrine disorders are not likely to benefit or be eligible for this project.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a cross-sectional observational study comparing people with hypertensive chronic kidney disease, people with hypertension without kidney damage, and healthy volunteers. Researchers will measure peripheral microcirculatory reactivity with a laser Doppler flow meter and glycocalyx thickness using Glycocheck. They will also analyze blood for soluble glycocalyx markers, oxidative stress and inflammation markers, PBMC findings, and antioxidant capacity. Results will be correlated to determine relationships between functional microvascular tests, glycocalyx status, and circulating markers.

Why it matters

Potential benefit: If successful, the work could identify biomarkers and mechanisms that explain endothelial dysfunction in CKD and suggest targets for better monitoring or future treatments.

How similar studies have gone: Previous smaller studies have linked glycocalyx damage and oxidative stress to endothelial dysfunction in CKD and cardiovascular disease, but translating these markers into routine clinical use remains unproven.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* patients with CKD of hypertensive etiology (grades 1-2 and 3-5; eGFR CKD-EPI GFR ≥ 90 ml/min/1.73 m², i.e. \< 60 mL/min/1.73 m2), non-diabetics, non-smokers
* patients with hypertension (according to ESH2023 Guidelines) without kidney damage (eGFR CKD-EPI \>90 mL/min/1.73 m2) non-diabetics, non-smokers
* healthy volunteer subjects as controls

Exclusion Criteria:

* kidney disease of any other etiology except hypertension
* endocrine, autoimmune or inflammatory diseases that could affect kidney function.
* smoking
* diabetes

Where it's running

  • Osijek University Hospital
    Osijek, Croatia
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.