Study of Pregnancy Pathologies Associated With Placental Abnormalities

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.

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)