Correlation between aneuploidy pregnancy and the concentration of various hormones and vascular endothelial factor in follicular fluid as well as the number of acquired oocytes

2019 ◽  
Vol 48 (1) ◽  
pp. 40-45
Author(s):  
Lin Liang ◽  
Xiao-Xi Zhao

AbstractObjectiveTo investigate the correlation between aneuploidy pregnancy and the concentration of various hormones and vascular endothelial factor in follicular fluid as well as the number of acquired oocytes and to provide a scientific basis for improving ovulation induction programs.MethodsIn total, we collected 277 follicular fluid specimens from patients undergoing in vitro fertilization (IVF) treatment in our hospital. Eighteen cases of aneuploidy embryos were identified. The follicular fluid of these aneuploidy embryos was used for the study. According to the case and control 1:5 paired design, we selected five age-matched controls with healthy births following IVF for each aneuploidy case. Concentrations of anti-Müllerian hormone (AMH), follicle-stimulating hormone (FSH), luteinizing hormone (LH), estrogen (E2) and vascular endothelial growth factor (VEGF) in the follicular fluid were measured. Conditional logistic regression was used to analyze the relationship between aneuploidy pregnancy and the concentrations of various hormones and VEGF in the follicular fluid as well as the number of acquired oocytes.ResultsMultivariate conditional logistic regression showed that of all the factors analyzed, only FSH [odds ratio (OR) = 1.300, 95% confidence interval (CI), 1.091–1.548, P = 0.003] level in the follicular fluid and the number of acquired oocytes (OR = 1.179, 95% CI, 1.070–1.299, P = 0.001) were closely related to aneuploidy pregnancy. No other factors were found to be associated with aneuploidy pregnancy.ConclusionFSH concentrations in the follicular fluid are risk factors for aneuploidy pregnancies. The higher the number of eggs, the higher the risk of aneuploidy. These findings may help improve ovulation induction programs.

2020 ◽  
Author(s):  
Xingxing Zhang ◽  
Tianqi Wang ◽  
Jingyan Song ◽  
Jifeng Deng ◽  
Zhengao Sun

Abstract Background: Follicular fluid is an important external environment for the growth and development of oocytes. A thorough identification of specific components in follicular fluid can better the existing understand of intracellular signal transduction and reveal potential biomarkers of oocyte health in women undergoing assisted reproductive therapy. To study the biomarkers that affect the development of oocytes, we have adopted a new method of SWATH to MRM( the sequential window acquisition of all theoretical fragment-ion spectra to multiple reaction monitor)metabolomics to provide extensive coverage and excellent quantitative data. This was done to investigate the differences in follicular fluid of patients undergoing in vitro fertilization (IVF) and embryo transfer in different age groups and to further explore the relationship between follicular fluid, age and reproductive function.Method: A combination of Ultra-high-performance liquid chromatography and high resolution mass spectrometry techniques were used to analyze the follicular fluid of 230 patients enrolled for the IVF cycle. The patients were of different ages grouped into two groups:the younger and older patients.The obtained multidimensional chromatographic data were processed by principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA). The charge ratios and mass numbers enabled for the identification of different fragments in the samples. Matching information obtained through database search and the fragment information obtained by fragment ion scan structurally identified substances in the samples. This was used to determine the differential compounds.Results: The quality and quantity of oocytes decline with age. This in caused by changes in follicular fluid metabolites. The main differences were in lipid metabolites. Some were up-regulated : Arachidonate, LysoPC(16:1), LysoPC(20:4) and LysoPC(20:3) while others were down-regulated: LysoPC(18:3) and LysoPC(18:1).Conclusions: Metabolomic analysis of follicular fluid revealed that with the increase in age, several differential metabolites are at play. Among these metabolites, lipid metabolism undergoes significant changes that affect the development of oocytes thus causing reduced fertility in older women. These differential metabolites related to follicular development may provide possible detection and treatment targets for promoting oocyte health, and provide scientific basis for understanding the environment of oocyte development.


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