Effects of dietary omega-3 and -6 supplementations on phospholipid fatty acid composition in mice uterus during window of pre-implantation

Amir Fattahi, Masoud Darabi, Laya Farzadi, Ali Salmassi, Zeinab Latifi, Amir Mehdizadeh, Maghsood Shaaker, Tohid Ghasemnejad, Leila Roshangar, Mohammad Nouri*

*Corresponding author for this work
16 Citations (Scopus)


Since fatty acid composition of uterus phospholipids is likely to influence embryo implantation, this study was conducted to investigate the effects of dietary omega-3 and -6 fatty acids on implantation rate as well as uterine phospholipid fatty acids composition during mice pre-implantation period. Sixty female mice were randomly distributed into:1) control (standard pellet), 2) omega-3 (standard pellet + 10% w/w of omega-3 fatty acids) and 3) omega-6 (standard pellet + 10% w/w of omega-6 fatty acids). Uterine phospholipid fatty acid composition during the pre-implantation window (days 1–5 of pregnancy) was analyzed using gas-chromatography. The implantation rate on the fifth day of pregnancy was also determined. Our results showed that on days 1, 2 and 3 of pregnancy, the levels of arachidonic acid (ARA) as well as total omega-6 fatty acids were significantly higher and the levels of linolenic acid and total omega-3 fatty acids were statistically lower in the omega-6 group compared to the omega-3 group (p < 0.05). On the fourth day of pregnancy, only the ARA, total omega-6 fatty acids, and poly-unsaturated fatty acids levels were significantly different between the two dietary supplemented groups (p < 0.05). There were positive correlations between the levels of omega-6 fatty acids, especially ARA, with the implantation rate. The present study showed that diets rich in omega-3 and -6 fatty acids could differently modify uterine phospholipid fatty acid composition and uterine levels of phospholipid ARA, and that the total omega-6 fatty acids had a positive association with the implantation rate.

Original languageEnglish
Pages (from-to)97-102
Number of pages6
Publication statusPublished - 01.03.2018

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