Adherence compounds in embryo transfer media for assisted reproductive technologies

Area of Science:

• Reproductive Medicine
• Assisted Reproductive Technologies (ART)

Background:

• Adherence compounds like hyaluronic acid (HA) and fibrin sealant are used in assisted reproductive technologies (ART) to enhance embryo implantation and improve success rates.
• These compounds are added to embryo transfer media with the aim of increasing clinical pregnancy and live birth rates.

Purpose of the Study:

• To evaluate the effectiveness of embryo transfer media containing adherence compounds in improving live birth and pregnancy rates within ART cycles.

Main Methods:

• A systematic review and meta-analysis of randomized controlled trials (RCTs) was conducted, searching multiple databases up to November 2013.
• Included trials compared embryo transfer media with functional concentrations of adherence compounds (HA or fibrin sealant) against media with low or no concentrations.
• Data from 17 studies involving 3898 participants were analyzed.

Main Results:

• Fibrin sealant showed no evidence of a treatment effect.
• Hyaluronic acid (HA) demonstrated a positive treatment effect, significantly improving live birth rates (OR 1.41, 95% CI 1.17 to 1.69) and clinical pregnancy rates (OR 1.39, 95% CI 1.21 to 1.60).
• Multiple pregnancy rates were significantly increased (OR 1.86, 95% CI 1.49 to 2.31) with HA, while adverse event rates did not differ significantly.

Conclusions:

• Functional concentrations of HA in embryo transfer media appear to enhance clinical pregnancy and live birth rates in ART.
• The observed increase in multiple pregnancies may be linked to the combined use of HA and multiple embryo transfer policies.
• Further research is recommended to investigate adherence compounds in conjunction with single embryo transfer.