Vascular endothelial growth factor gene polymorphisms in spontaneously aborted fetuses

Area of Science:

• Genetics
• Reproductive Biology
• Molecular Biology

Background:

• The Vascular Endothelial Growth Factor (VEGF) gene is crucial for angiogenesis and has been implicated in pregnancy.
• Previous studies suggested the VEGF 1154G>A polymorphism as a risk factor for recurrent spontaneous abortion, primarily analyzing maternal genetics.
• A gap exists in understanding the direct genetic contribution of the fetus to spontaneous abortion.

Purpose of the Study:

• To investigate the association between four specific VEGF gene polymorphisms (-2578C>A, -1154G>A, -634G>C, and 936C>T) and spontaneous abortion.
• To evaluate the role of fetal genetic factors in spontaneous abortion.
• To confirm the VEGF 1154G>A polymorphism's association with spontaneous abortion by analyzing aborted fetuses.

Main Methods:

• Genotyping of four VEGF gene polymorphisms (-2578C>A, -1154G>A, -634G>C, 936C>T) in 118 spontaneously aborted fetuses (SAFs) and 380 normal controls.
• Utilized polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis for genotyping.
• Compared genotype and haplotype frequencies between SAFs and control groups.

Main Results:

• Significant differences in the frequencies of combined genotypes (-2578CA+AA/-634CC and -1154GA+AA/-634CC) were observed between SAFs and controls.
• The haplotype -2578A/-1154A/-634C/936C showed a significantly higher frequency in spontaneously aborted fetuses.
• These findings indicate a potential genetic link between specific VEGF fetal genotypes and spontaneous abortion.

Conclusions:

• Specific fetal VEGF gene genotypes, namely -2578CA+AA/-634CC and -1154GA+AA/-634CC, are identified as potential risk factors for spontaneous abortion.
• The study highlights the importance of fetal genetic factors in the etiology of spontaneous abortion.
• Further research is warranted to elucidate the precise mechanisms by which these VEGF polymorphisms contribute to pregnancy loss.