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Endothelial Extracellular Vesicles as Biomarkers of Endothelial Activation in Pregnant Women With Hypertensive Disorders of Pregnancy (HYPER-endoEV-p)

22. juli 2026 opdateret af: Ines Drenjancevic, Josip Juraj Strossmayer University of Osijek

Endothelial Extracellular Vesicles as Biomarkers of Blood Pressure-Induced Endothelial Activation in Pregnant Women With Hypertensive Disorders of Pregnancy

Hypertensive disorders of pregnancy are associated with endothelial dysfunction and increased maternal and fetal morbidity. Endothelial extracellular vesicles (EEVs) have emerged as promising biomarkers of endothelial activation; however, their relationship with blood pressure and endothelial function during pregnancy remains incompletely understood. This observational case-control study aims to compare circulating EEV concentrations between normotensive pregnant women and pregnant women with hypertensive disorders of pregnancy. The study will also investigate the associations between EEV levels, blood pressure, microvascular endothelial function assessed by laser Doppler flowmetry, and circulating biomarkers of endothelial activation. The findings may improve understanding of endothelial injury during pregnancy and support the development of non-invasive biomarkers for early detection and monitoring of hypertensive disorders of pregnancy.

Studieoversigt

Status

Rekruttering

Betingelser

Undersøgelsestype

Observationel

Tilmelding (Anslået)

80

Kontakter og lokationer

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Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

  • Kroatien
      • Osijek, Kroatien
        • Rekruttering
        • Faculty of Medicine Osijek
        • Kontakt:

Deltagelseskriterier

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Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

The study population will include pregnant women aged 18 years and older recruited from the outpatient clinics of the Department of Obstetrics and Gynecology, University Hospital Centre Osijek, Croatia. Participants will comprise normotensive pregnant women and women with newly diagnosed hypertensive disorders of pregnancy, including gestational hypertension and preeclampsia, diagnosed according to current international clinical guidelines.

Beskrivelse

Inclusion Criteria:

  • Pregnant women aged ≥18 years.
  • Singleton pregnancy.
  • Ability to provide written informed consent.
  • Normotensive pregnancy or diagnosis of gestational hypertension or preeclampsia according to current clinical guidelines.
  • Ability to comply with study procedures.

Exclusion Criteria:

  • Chronic hypertension diagnosed before pregnancy.
  • Multiple pregnancy.
  • Pre-existing diabetes mellitus.
  • Chronic kidney disease.
  • Autoimmune disease.
  • Known cardiovascular disease.
  • Active infection or inflammatory disease.
  • Malignancy.
  • Inability or unwillingness to provide informed consent.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Normotensive Pregnancy
Pregnant women with normal blood pressure and uncomplicated singleton pregnancy.
Hypertensive Disorders of Pregnancy
Pregnant women diagnosed with hypertensive disorders of pregnancy, including gestational hypertension or preeclampsia, according to current clinical guidelines.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Plasma endothelial extracellular vesicle concentration
Tidsramme: Baseline
Concentration of circulating endothelial extracellular vesicles quantified by flow cytometry following size-exclusion chromatography isolation.
Baseline

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Post-occlusive reactive hyperemia (PORH)
Tidsramme: Baseline
Microvascular endothelium-dependent vasodilation assessed by laser Doppler flowmetry following 1-minute arterial occlusion.
Baseline
Acetylcholine-induced vasodilation (AChID)
Tidsramme: Baseline
Endothelium-dependent microvascular vasodilation assessed by acetylcholine iontophoresis and laser Doppler flowmetry.
Baseline
Sodium nitroprusside-induced vasodilation (SNPID)
Tidsramme: Baseline
Endothelium-independent microvascular vasodilation assessed by sodium nitroprusside iontophoresis and laser Doppler flowmetry.
Baseline
VCAM-1 concentration
Tidsramme: Baseline
Plasma vascular cell adhesion molecule-1 (VCAM-1) concentration measured as a marker of endothelial activation.
Baseline
ICAM-1 concentration
Tidsramme: Baseline
Plasma intercellular adhesion molecule-1 (ICAM-1) concentration measured as a marker of endothelial activation.
Baseline
Endocan concentration
Tidsramme: Baseline
Plasma endocan concentration measured as a marker of endothelial dysfunction.
Baseline
von Willebrand factor (vWF)
Tidsramme: Baseline
Plasma von Willebrand factor concentration measured as a marker of endothelial injury.
Baseline
Matrix metalloproteinase-9 (MMP-9)
Tidsramme: Baseline
Plasma MMP-9 concentration measured as a marker of vascular remodeling and endothelial dysfunction.
Baseline

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Josip Juraj Strossmayer University of Osijek

Samarbejdspartnere

Osijek University Hospital

Efterforskere

  • Studiestol: Ana Stupin, MD, PhD, Faculty of Medicine Osijek, Josip Juraj Strossmayer of Osijek

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. april 2026

Primær færdiggørelse (Anslået)

30. april 2029

Studieafslutning (Anslået)

30. september 2029

Datoer for studieregistrering

Først indsendt

22. juli 2026

Først indsendt, der opfyldte QC-kriterier

22. juli 2026

Først opslået (Faktiske)

27. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

27. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

22. juli 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • HYPER-endoEV-pregnancy

Plan for individuelle deltagerdata (IPD)

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