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Relaxin and Placental Volume i placenta Accreta Spectrum

29. september 2026 opdateret af: Başakşehir Çam & Sakura City Hospital

Evaluering af relaxin og placenta-volumen i placenta Accreta Spectrum Disorders: En case-control-undersøgelse

This retrospective case-control study investigated the potential role of circulating relaxin levels and estimated placental volumes (EPV) in the pathogenesis and diagnosis of placenta accreta spectrum (PAS) disorders. It compared these parameters in patients diagnosed with PAS versus healthy controls.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This study aimed to compare relaxin levels in umbilical cord and peripheral blood and estimated placental volumes (EPV) between PAS cases and controls. Additionally, subgroup analysis was conducted to evaluate relaxin levels and EPV among PAS subtypes (accreta, increta, and percreta).A retrospective case-control study was conducted at a tertiary referral center, analyzing data from January 2022 to December 2022.

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

40

Kontakter og lokationer

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Studiesteder

    • Turkey
      • Istanbul, Turkey, Tyrkiet (Türkiye)
        • Basaksehir Cam and Sakura City Hospital

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 45 år (Voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Kvinde

Prøveudtagningsmetode

Sandsynlighedsprøve

Studiebefolkning

The study population consisted of two groups. Following retrospective investigation of patients operated in our clinic between 01.01.2022 and 01.12.2022, the case group included 20 patients diagnosed with PAS disorders, suspected with clinical and imaging findings, confirmed through histopathological findings. These patients had undergone elective cesarean hysterectomy and met inclusion criteria aged between 18 and 45 years and availability of complete medical records. Due to ethical considerations, 4 patients diagnosed with PAS who underwent emergency surgery because of vaginal bleeding and 14 patients operated with segmentary resections were excluded from the study to compose more homogenous study cohort for the measurement of EPV. The control group consisted of 20 healthy pregnant women who underwent the first planned cesarean section of the day, without any obstetric complications, on the same days when planned PAS cesarean-hysterectomy cases were performed in 2022.

Beskrivelse

Inclusion Criteria:

Women aged 18-45 years

Confirmed histopathological diagnosis of PAS (case group)

Complete medical records

Healthy pregnant women undergoing cesarean delivery (control group)

Exclusion Criteria:

Multifetal gestation

Emergency surgeries

Incomplete medical records

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: CASE_CONTROL
  • Tidsperspektiver: RETROSPECTIVE

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Placenta Accreta Spectrum Group
  • 20 patients diagnosed with PAS, confirmed through histopathological findings post-cesarean hysterectomy
  • Blood and placental tissue analyzed for relaxin levels and placental volume
  • Subgroup analysis based on PAS severity (accreta, increta, percreta)

The primary source of relaxin in pregnancy is the corpus luteum, but it is also produced in other tissues, such as the decidua and placenta. Importantly, relaxin's pleiotropic effects include endothelial-dependent vasodilation, extracellular matrix remodeling, and potential contributions to placental development. These properties make relaxin a molecule of interest in the context of PAS disorders, where abnormal placental invasion may reflect disruptions in vascular and extracellular matrix regulation. Additionally, recent findings have indicated altCirculating relaxin levels were assessed before routinely storing maternal venous blood and umbilical cord arterial blood samples are anelyzed. This study aimed to compare relaxin levels in umbilical cord and peripheral blood and estimated placental volumes (EPV) between PAS cases and controls. Additionally, subgroup analysis was conducted to evaluate relaxin levels and EPV among PAS subtypes (accreta, increta, and percreta).

Control Group (No PAS Pathology with Elective Cesarean Section)
  • 20 healthy pregnant women undergoing elective cesarean section
  • Blood and placental volume assessed

The primary source of relaxin in pregnancy is the corpus luteum, but it is also produced in other tissues, such as the decidua and placenta. Importantly, relaxin's pleiotropic effects include endothelial-dependent vasodilation, extracellular matrix remodeling, and potential contributions to placental development. These properties make relaxin a molecule of interest in the context of PAS disorders, where abnormal placental invasion may reflect disruptions in vascular and extracellular matrix regulation. Additionally, recent findings have indicated altCirculating relaxin levels were assessed before routinely storing maternal venous blood and umbilical cord arterial blood samples are anelyzed. This study aimed to compare relaxin levels in umbilical cord and peripheral blood and estimated placental volumes (EPV) between PAS cases and controls. Additionally, subgroup analysis was conducted to evaluate relaxin levels and EPV among PAS subtypes (accreta, increta, and percreta).

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Circulating relaxin (RLN2) levels in peripheral and umbilical cord blood
Tidsramme: 11 months

The primary source of relaxin in pregnancy is the corpus luteum, but it is also produced in other tissues, such as the decidua and placenta. Importantly, relaxin's pleiotropic effects include endothelial-dependent vasodilation, extracellular matrix remodeling, and potential contributions to placental development. These properties make relaxin a molecule of interest in the context of PAS disorders, where abnormal placental invasion may reflect disruptions in vascular and extracellular matrix regulation. Additionally, recent findings have indicated altered expression of relaxin, its receptor RXFP1, and insulin-like peptide 4 (INSL4) in PAS cases, suggesting potential roles in its pathogenesis.

11 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
placental volume
Tidsramme: 11 months

Placental volume, assessed through imaging modalities, has been explored as a potential biomarker for abnormal placental development, including PAS. Studies have demonstrated that larger placental volumes may be associated with invasive placentation, suggesting a correlation between placental growth patterns and PAS severity.

11 months

Samarbejdspartnere og efterforskere

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Sponsor

Publikationer og nyttige links

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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. januar 2022

Primær færdiggørelse (Faktiske)

1. november 2022

Studieafslutning (Faktiske)

1. januar 2023

Datoer for studieregistrering

Først indsendt

29. januar 2025

Først indsendt, der opfyldte QC-kriterier

29. januar 2025

Først opslået (Faktiske)

5. februar 2025

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

30. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

29. september 2026

Sidst verificeret

1. januar 2025

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • KAEK/2023.01.20

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