Study of Pregnancy Pathologies Associated With Placental Abnormalities

N/ANot Yet RecruitingNCT05188066

University Hospital, Grenoble800 enrolled

Overview

Pregnancy pathologies can occur from implantation until childbirth. The investigators are interested in the development mechanisms of these pathologies and aim to develop therapies to treat them. The investigators need to collect samples, especially placental samples, following abortions and term and premature deliveries. Abortions will allow investigators to have non-pathological placental material up to 13 weeks. This material will serve as a reference for the understanding of the histological changes that occur in normal placentas collected at term of pregnancy. The latter will, in turn, be compared with the placentas collected during premature deliveries. Also, the abortion product will be cultivated in an environment mimicking the pathology of pre-eclampsia. This study will allow investigators to advance their understanding of the pathophysiological mechanisms of the placenta. The investigators are internationally recognized for their research on these pathologies.

Pregnancy pathologies can occur from implantation until childbirth. Clinical and scientific investigators are interested in the study of the mechanisms of development of these pathologies and aim to develop therapies to treat them. The investigators need to collect samples, especially placental samples, following abortions, term, and premature deliveries. Abortions will allow investigators to have non-pathological placental material up to 13 weeks. This material will serve as a reference for understanding the histological changes that occur in normal placentas collected at term of pregnancy. The latter, will in turn, be compared with the placentas collected during premature deliveries. Also, the abortion product will be cultivated in an environment mimicking the pathology of preeclampsia. This study will allow investigators to advance the understanding of the pathophysiological mechanisms of the placenta. The investigators are internationally recognized for its research on these thematic.

Study Type

OBSERVATIONAL

Enrollment

800

Conditions

Pre-eclampsia

Eligibility

Sex: FEMALEMin age: 18 YearsMax age: 52 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: Adult women * Admitted to the CHUGA for a birth or an abortion. * Pregnant women consenting to the collection of their fetal placenta membranes, during premature deliveries or at term of pregnancy OR Women performing an abortion consenting to the collection of their abortion products. * Having signed a consent * Affiliated with social security Exclusion Criteria: * Placental sample or abortion product unavailable (not collected or necessary for treatment). * Patient with known positive HIV or Hepatitis B or Hepatitis C serology or at risk according to the infectious safety criteria applied by the EFS. * hemoglobin \<7d / dL or hemoglobin \<10g / dL if she suffers from a cardio-respiratory pathology). * Patient protected by law (minor, hospitalized under duress, subject to a legal protection measure by guardianship or curatorship, deprived of liberty by judicial or administrative decision)

Outcomes

Primary Outcomes

To better characterize pregnancy pathologies from implantation to childbirth

Comparison of the frequencies (in percentage) of the histological differences of the placenta and its appendages in patients with pathological and normal pregnancies (histological differences of normal pregnancies versus pathological pregnancies.

Time frame: Analyses will be performed on each collected sample. The measurement is assessed for up to 6 hours

Secondary Outcomes

Link between the frequencies of histological aberrations and worsening of the pathology

Comparison of the severity of the pathology according to the frequencies of aberrations

Time frame: Assessement of the link between the frequencies of histological aberrations and worsening of the pathology will be assessed on the final cohort; This will take up to 3 hours for each aberration.