Preeclampsia Clinical Trial
Official title:
A Multicenter Cohort Study on Maternal and Infant Microecology and New Targets for Pre-eclampsia Screening in China
major objective This multicenter, prospective cohort study aims at evaluating the predictive value of microbiome ,proteomics and serum markers in preeclampsia. secondary objective to evaluate the value of microbiome,proteomics and serum markers in assessing pregnancy outcome (complications during pregnancy and delivery, delivery) and neonatal prognosis.
The volunteers will be recruited from the gestational women who come to the hospital before 14 weeks of gestation. After being informed about the potential risks, each volunteer giving written informed consent will be asked to complete a questionnaire. Then,urines ,serums and salivas as well as vaginal swabs and feces will be taken from each volunteer at gestational ages 11-14, 22-28, 32-34 weeks and delivery period .In delivery period,we will take placentas, cord bloods, amniotic fluids if it is possible. They will be followed up to two years after the child delivery (6 weeks,6 months,1 years and 2years after the child delivery) and do the same sampling who have preeclampsia during gestation. The salivas, vaginal swabs,placentas, amniotic fluids and feces will be to perform 16S rRNA(ribosomal ribonucleic acid) gene sequencing microecology assessment, Body fluid samples will be to perform peptidomics by MALDI-TOF(Matrix-Assisted Laser Desorption/ Ionization Time of Flight ) and metabonomics by mass spectrometer, combinations of mean arterial pressure (MAP), uterine artery pulsatile index , serum placental growth factor (PlGF) to estimate the patient-specific risk of pre-eclampsia (PE) . ;
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