Innovations in Placental Metabolism and Association With Antioxidants and Nutrients in Diabetes and Gestational Obesity (IMPACTING)

Rio de Janeiro State University

Status: Suspended

Conditions: Obesity, Maternal; Pregnancy Complications; Diabetes Mel Gestational - in Pregnancy

Study type: Observational

Funder types: Other

Identifiers

NCT05174728

66949217.0.0000.5275

Details and patient eligibility

About

This research project aims to investigate, in an innovative way, the molecular pathophysiology of gestational complications induced by maternal obesity and gestational diabetes mellitus (GDM). These complications have an immediate impact on obstetric outcomes - such as pre-eclampsia and intrauterine growth restriction - as well as long-term consequences for the health of the mother and child. This proposal aims to advance the understanding of the relationship between subclinical maternal and placental inflammation with dietary components through a prospective cohort of pregnant women. To this end, a prospective cohort of pregnant women will be conducted with four follow-up waves: 13th-20th (baseline), 24th-28th, 32nd-36th gestational weeks and at the time of delivery. Retrospective data referring to the first trimester of pregnancy will be obtained from the medical records. Pregnant women will be invited to participate in the study by registering at the prenatal service. Women who start prenatal care with less than 13 weeks of gestation will be registered, for capture in the 2nd consultation. The initial sample calculation is 120 volunteers. Maternal blood samples will be collected at 2 times: 2nd trimester appointment and 3rd trimester appointment. Placental and umbilical cord blood samples will be collected immediately after delivery. Dietary consumption during pregnancy will be assessed by 2 24-hour recalls at each visit (1 in person and 1 by telephone). The identification of functional biomarkers in maternal blood and placenta will serve for prognostic purposes of gestational complications such as Gestational Diabetes Mellitus. The identification of dietary factors associated with obesity and gestational diabetes mellitus and associated complications will provide information that will serve as a basis for nutritional guidelines for pregnant women.

Enrollment: 120 estimated patients

Sex: Female

Ages: 18 to 45 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Age between 18 and 45 years;
• Free from chronic non-communicable diseases such as high blood pressure and type 2 diabetes mellitus, except obesity;
• Free from infectious diseases;
• Carrying a single fetus;
• Intention to deliver at Maternity School-Federal University of Rio de Janeiro

Exclusion criteria

• Smokers;
• With low weight in early pregnancy (BMI < 18.5 kg/m²). They will be verified by interview, before the signing the informed consent form.