Correlation Between Environmental Pollution and Gestational Diabetes Mellitus

Women's Hospital School Of Medicine Zhejiang University2,500 enrolled

Overview

Gestational diabetes mellitus (GDM) refers to the abnormal glucose metabolism index of pregnant women during pregnancy. At present, about 15% of pregnant women will develop GDM in the second and third trimester, which seriously affects the health of the pregnant woman and the fetus. However, the etiology of GDM remains unclear. Various pollutants in the environment may have a potential impact on pregnant women and fetuses. For example, previous studies have shown that exposure to atmospheric pollutants nitric oxide and organochlorine pesticides are associated with GDM. At present, we plan to further investigate the correlation between environmental pollutants and GDM.

Study Type

OBSERVATIONAL

Enrollment

2,500

Conditions

Gestational Diabetes Mellitus

Interventions

Clinical data and specimen collectionOTHER

Questionnaire survey and clinical data was conducted when pregnant women were enrolled in the first trimester, and blood and urine were collected. Furthermore, we will follow up the pregnant women until delivery, blood and urine were collected during the third trimester (after 28 weeks), and clinical information was collected. Umbilical cord blood and placental tissue will be collected if possible.

Eligibility

Sex: FEMALEMin age: 20 YearsMax age: 49 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Plan to complete OGTT and give birth in the research center * First trimester * Singleton pregnancy * Without diabetes before pregnancy Exclusion Criteria: * Have diseases that affect metabolic function or even threaten the life of the mother and fetus before pregnancy, such as diabetes, hypertension, heart disease, liver and kidney diseases, thyroid diseases with drug, autoimmune diseases, malignant tumors, AIDS, etc. * Fetus has a known deformity or genetic defects * Incomplete clinical data * Assisted reproductive

Outcomes

Primary Outcomes

Environmental contaminants 1

The concentrations of environmental pollutants, such as organochlorine pesticides, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, polybrominated diphenyl ethers and metallic elements, in serum and urine were analyzed by gas chromatochromatograms and mass spectrometry (GC-MS/MS). Specimens were collected during the first trimester and tested when classified in the GDM or control group

Time frame: First trimester (9-14 gestational weeks)

Environmental contaminants 2

Time frame: Third trimester (after 28 gestational weeks)