Investigating CD 71 in Preeclamptic Pregnancies

November 20, 2025 updated by: Celal Bayar University

Immunohistochemical Analysis of CD 71 Levels in the Placenta of Preeclamptic and Normotensive Pregnancies and Comparison With Neonatal Outcomes

Objective: Upon reviewing studies aimed at understanding and investigating the pathogenesis of preeclampsia, it has been observed that CD71 has not been previously examined. Therefore, the increase in CD71 is associated with placental dysfunction and mechanisms affecting fetal growth restriction. The exact pathogenesis of CD71, which is known to play a role in such mechanisms, has not been fully understood. Consequently, this study may contribute to understanding and elucidating the development of preeclampsia. This study aims to investigate the levels of CD71 and NOS in the placentas of pregnant women with high and normal blood pressure and to compare these findings with neonatal outcomes.

Method: This prospective randomized controlled study will be conducted at the Department of Obstetrics and Gynecology, Manisa Celal Bayar University, involving patients diagnosed with preeclampsia. The planned sample size was calculated using the G power 3.1.9.7 program, with an effect size of 1.153, 95% power, and a 0.5% type I error rate. The calculated sample size for the case group is 39 and for the control group is also 39. When the planned sample size is reached, sample collection will be terminated, and histopathological examinations will be conducted.

Study Group: Patients with preeclampsia Control Group: Patients without preeclampsia

During the hospitalization of the preeclampsia patients for delivery, after clamping of the umbilical cord following the birth of the baby (after the connection between mother and baby has ceased), a 2 ml (one teaspoon) blood sample will be taken from the cord blood, centrifuged, and the serum sample will be separated and stored at -80 degrees Celsius. In the post-delivery process, a 3x3 cm piece will be taken from the umbilical cord, which will be disposed of as medical waste, and from the placenta (the baby's afterbirth), encompassing all layers. The collected tissue samples will be preserved in a container with 10% formalin. At the time of sample collection, both the cord blood and placenta samples will be in a waste state, ensuring that there is no connection left between the mother and baby, thus eliminating any risk of harm to either during the sampling process. The tissues (placenta, umbilical cord) and the 2 ml (one teaspoon) blood sample from the umbilical cord will be collected, centrifuged, and the serum sample separated, to be stored at -80 degrees Celsius for future similar studies and projects.

Preeclampsia is a serious complication during pregnancy that poses potential risks to both the mother and the baby. Early diagnosis and appropriate management can reduce complications and safeguard maternal-fetal health. Biomarkers of preeclampsia play a significant role in the understanding and management of the disease.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

39

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Probability Sample

Study Population

Preeclampsi Patients

Description

Inclusion Criteria:

  • Healthy pregnancy under 37 weeks
  • Age range 18-50
  • Being literate in Turkish
  • Not having any additional disease
  • Agreeing to participate in the study

Exclusion Criteria:

  • High-risk pregnancies (gestational hypertension, preeclampsia, HELLP syndrome, chronic hypertension, gestational and pregestational diabetes, cholestasis, intrauterine growth retardation, etc.)
  • Multiple pregnancy
  • Pregnant women under the age of 18
  • Smoking
  • Medication use (excluding routinely used food supplements during pregnancy)
  • Additional disease (thyroid, renal failure, liver failure, hepatitis, heart disease, connective tissue disease, etc.)
  • Immunosuppressive use
  • Presence of active or chronic infection
  • Presence of active or chronic inflammatory disease
  • Patients who gave birth at an external center or later chose to withdraw from the study
  • Patients who did not have any exclusion criteria at the time of Preeclampsi or when blood was drawn for the control group, but who later developed any exclusion criteria.
  • Premature birth of patients included in the control group

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Group 1:
Patients with preeclampsia
Group 2:
Patients without preeclampsia

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
2% women's with PPROM placenta tissues and umblical cord while birth. Placenta tissues and umblical cord Staining will be Measured by inos,enos,cd71 immunohistochemistry
Time Frame: Baseline
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Celal Bayar University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 23, 2024

Primary Completion (Actual)

January 17, 2025

Study Completion (Actual)

May 5, 2025

Study Registration Dates

First Submitted

October 30, 2024

First Submitted That Met QC Criteria

October 30, 2024

First Posted (Actual)

October 31, 2024

Study Record Updates

Last Update Posted (Actual)

November 21, 2025

Last Update Submitted That Met QC Criteria

November 20, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MCBU_Preeklampsi

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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