Tumour necrosis factor-alpha (TNF-alpha) gene polymorphism and expression in pre-eclampsia

Area of Science:

• Obstetrics and Gynecology
• Immunology
• Molecular Biology

Background:

• Pre-eclampsia is an endothelial disorder with complex pathophysiology.
• Tumor necrosis factor-alpha (TNF-alpha) significantly impacts endothelial cell function.
• TNF-alpha influences oxidant/antioxidant balance, prostaglandin production, and cell surface components.

Purpose of the Study:

• To investigate whether TNF-alpha mRNA expression is elevated in pre-eclamptic patients.
• To explore the potential association between TNF-alpha gene polymorphism and abnormal expression in pre-eclampsia.

Main Methods:

• Quantitative reverse transcriptase-polymerase chain reaction (RT-PCR) was used to measure TNF-alpha mRNA expression in leukocytes.
• Leukocytes were obtained from pre-eclamptic patients, normal pregnant women, and normal non-pregnant women.
• TNF-alpha gene polymorphism was analyzed using GENESCAN and Genotyper software on a 373A ABI Sequencer.

Main Results:

• TNF-alpha mRNA expression was significantly elevated in pre-eclamptic patients compared to both control groups.
• A higher frequency of the TNF1 allele was observed in pre-eclamptic patients.
• Elevated TNF-alpha expression may be linked to the TNF1 allele.

Conclusions:

• The findings suggest a significant role for TNF-alpha in the endothelial disturbances characteristic of pre-eclampsia.
• Elevated TNF-alpha expression, potentially influenced by TNF1 allele frequency, is implicated in the pathogenesis of pre-eclampsia.
• TNF-alpha is proposed as a key mediator in the development of pre-eclampsia.