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Endothelial Protection in Convalescent COVID-19 Patients

Endothelial Protection in Convalescent COVID-19 Patients. The Effect of Sulodexide on Serum Levels of Biomarkers for Endothelial Dysfunction. A Pilot Prospective, Randomized, Open-label, Investigator-initiated Trial.

Status
Terminated
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05252923
Enrollment
2
Registered
2022-02-23
Start date
2022-04-01
Completion date
2022-12-31
Last updated
2025-06-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endothelial Dysfunction, Inflammation, Thrombosis, COVID-19

Brief summary

This pilot open-label randomized controlled trial aims to assess if treatment with sulodexide may improve the endothelial status and inflammatory response in post-COVID-19 patients. Survived inpatients with severe-to-critical COVID-19 within 14 days after discharge are randomized to receive sulodexide 250 LSU 1 oral capsule twice daily or no treatment for 8 weeks. Biomarkers of endothelial dysfunction, inflammation, and prothrombotic changes are assessed at 0, 4, and 8 weeks. The hypothesis is that affected endothelial function, pro-inflammatory, and pro-thrombotic changes could be improved with sulodexide treatment in convalescent COVID-19 patients who suffered a severe-to-critical clinical presentation and have chronic comorbidities of high risk for endothelial dysfunction.

Interventions

Sulodexide 250 LSU 1 oral capsule twice daily for 8 weeks

Sponsors

Pirogov Russian National Research Medical University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* over 18 years old * male or female * documented PCR SARS-CoV-2 positive test * COVID-19 convalescence (define as at least 10 days after the onset of symptoms, no fever for at least 24 hours without the use of antipyretics and improvement of respiratory symptoms) * informed consent signed * clinical severity presentation of 1. Severe the disease is classified as severe if one of the following conditions is met: Respiratory distress, respiratory rate ≥30/min Oxygen saturation on room air at rest ≤93%. Partial pressure of oxygen in arterial blood/FiO2 ≤300 mm Hg. Or 2. Critical if one of the following conditions is met. Respiratory failure and mechanical ventilation are required. Shock occurs Another organ dysfunction is present * risk of health complication \>50% according to the health risk calculator * less than 14 days of hospital discharge.

Exclusion criteria

* concomitant use of another anticoagulant * known pregnancy * known hypersensitivity to sulodexide * need for hospital care at screening * renal insufficiency with CrCl \<30ml/min or continuous renal replacement therapy, hemodialysis, or peritoneal dialysis. * blood platelet count \< 30 000/µL * other conditions that are judged to carry an increased risk of bleeding as judged by the Investigator * more than 30 days of clinical onset

Design outcomes

Primary

MeasureTime frameDescription
Serum level of soluble Thrombomodulin8 weeksThe level of serum soluble Thrombomodulin will be measured at 0, 4, and 8 weeks by ELISA test to detect endothelial dysfunction and its improvement.

Secondary

MeasureTime frameDescription
Serum level of Von Willebrand factor8 weeksThe level of serum Von Willebrand factor will be measured at 0, and 8 weeks by ELISA test to detect pro-thrombotic status, endothelial dysfunction, and their improvement.
Serum level of ICAM-18 weeksThe level of serum ICAM-1 will be measured at 0, and 8 weeks by ELISA test to detect pro-inflammatory status, endothelial dysfunction, and their improvement.
Serum level of VCAM-18 weeksThe level of serum VCAM-1 will be measured at 0, and 8 weeks by ELISA test to detect pro-inflammatory status, endothelial dysfunction, and their improvement.
Serum level of soluble P-selectin8 weeksThe level of serum soluble P-selectin will be measured at 0, and 8 weeks by ELISA test to detect pro-inflammatory status, pro-thrombotic changes, endothelial dysfunction, and their improvement.
Serum level of circulating endothelial cells8 weeksThe level of circulating endothelial cells will be measured at 0, and 8 weeks by standardized flow cytometry to detect endothelial dysfunction and its improvement
Serum level of high sensitive C reactive protein8 weeksThe level of high sensitive C reactive protein will be measured at 0, and 8 weeks by ELISA test to detect pro-inflammatory status, endothelial dysfunction, and their improvement.
Serum level of Interleukine-68 weeksThe level of serum Interleukine-6 will be measured at 0, and 8 weeks by ELISA test to detect pro-inflammatory status, endothelial dysfunction, and their improvement.

Other

MeasureTime frameDescription
Serum level of D-dimer8 weeksThe level of serum D-dimer will be measured at 0, 4, and 8 weeks by ELISA test to detect pro-inflammatory status, pro-thrombotic changes, endothelial dysfunction, and their improvement.
Serum level of fibrinogen8 weeksThe level of serum fibrinogen will be measured at 0, 4, and 8 weeks by ELISA test to detect pro-inflammatory status, pro-thrombotic changes, endothelial dysfunction, and their improvement.
Platelets count in peripheral blood8 weeksPlatelets count in peripheral blood will be measured at 0, 4, and 8 weeks by standard automatic analyzer for complete blood count to detect pro-inflammatory status, pro-thrombotic changes, endothelial dysfunction, and their improvement.
Post-COVID-19 functional status8 weeksPost-COVID-19 functional status will be assessed at 0, 4, and 8 weeks by a specific questionnaire Post-COVID-19 Functional Status (PCFS) scale that ranges from 0 (no limitations) to 4 (severe limitations).
Clinical progression of COVID-198 weeksClinical progression of COVID-19 will be assessed at 0, 4, and 8 weeks by a specific World Health Organization Clinical progression scale that ranges from 0 (no infection) to 10 (death due to infection).
Thrombotic complications8 weeksVenous (deep vein thrombosis, superficial vein thrombosis, pulmonary embolism) and arterial (myocardial infarction, stroke, acute limb ischemia) thrombosis will be assessed on a clinical basis and should be confirmed by appropriate imaging (duplex ultrasound scan, computed tomography scan with contrast, arterial and venous angiography).
Major bleeding as defined by International Society on Thrombosis and Haemostasis (ISTH) criteria8 weeksMajor bleeding as defined by the International Society on Thrombosis and Haemostasis (fatal bleeding, and/or symptomatic bleeding in a critical area or organ, such as intracranial, intraspinal, intraocular, retroperitoneal, intraarticular or pericardial, or intramuscular with compartment syndrome, and/or bleeding causing a fall in hemoglobin level of 2 g/dL (1.24 mmol/L) or more, or leading to transfusion of two or more units of whole blood or red cells) will be assessed on a clinical basis and should be confirmed by appropriate laboratory and instrumental tests.
Clinically relevant non-major bleedingas defined by International Society on Thrombosis and Haemostasis (ISTH) criteria8 weeksClinically relevant non-major bleeding as defined by the International Society on Thrombosis and Haemostasis (requiring medical intervention by a healthcare professional, and/or leading to hospitalization, and/or increased level of care prompting a face to face \[i.e., not just a telephone or electronic communication\] evaluation) will be assessed on a clinical basis and should be confirmed by appropriate laboratory and instrumental tests.

Countries

Russia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026