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A Randomised Controlled Trial of a Preconceptional Dietary Intervention in Women Undergoing IVF Treatment (PREPARE Trial)

Overview
Publisher Biomed Central
Date 2014 Nov 20
PMID 25407227
Citations 13
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Abstract

Background: In vitro fertilisation (IVF) treatment provides an opportunity to study early developmental responses to periconceptional dietary interventions. Retrospective studies have suggested links between preconception diet and fertility, and more recently, a "Mediterranean" diet has been reported to increase pregnancy rates by up to 40%. In addition, a prospective study examining increased intake of omega-3 polyunsaturated fats demonstrated a quickened rate of embryo development after IVF. However, up to now, few prospective randomised controlled trials have investigated the impact of periconceptional dietary interventions on fertility outcomes.

Methods And Design: The study is a randomised controlled trial of a dietary intervention consisting of olive oil for cooking, an olive oil based spread, and a daily supplement drink enriched with Vitamin D (10 microgram daily) and marine omega-3 fatty acids (2 g daily) for 6 weeks preconception versus a control diet of sunflower seed oil for cooking, a sunflower oil based spread, and a daily supplement drink without added Vitamin D or marine omega-3 fatty acids. Couples undergoing IVF will be randomised to either the intervention or control group (55 in each arm). The primary endpoint is embryo developmental competency in vitro, measured by validated morphokinetic markers. Secondary outcomes will include the effect of the dietary intervention on the nutritional content of the intrauterine environment.

Discussion: This approach will enable rigorous examination of the impact of the dietary intervention on early embryo development, together with the influence of the peri-implantation intra-uterine nutritional environment.

Trial Registration: ISRCTN50956936.

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Beyond body mass index: a synthesis of lifestyle factors that may influence in vitro fertilisation outcomes.

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Chu Q, Yu Y, Zhang J, Zhang Y, Yu J Front Endocrinol (Lausanne). 2024; 15:1280760.

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References
1.
Weimar C, Kavelaars A, Brosens J, Gellersen B, de Vreeden-Elbertse J, Heijnen C . Endometrial stromal cells of women with recurrent miscarriage fail to discriminate between high- and low-quality human embryos. PLoS One. 2012; 7(7):e41424. PMC: 3405140. DOI: 10.1371/journal.pone.0041424. View

2.
Toledo E, Lopez-Del Burgo C, Ruiz-Zambrana A, Donazar M, Navarro-Blasco I, Martinez-Gonzalez M . Dietary patterns and difficulty conceiving: a nested case-control study. Fertil Steril. 2011; 96(5):1149-53. DOI: 10.1016/j.fertnstert.2011.08.034. View

3.
Fleming T, Lucas E, Watkins A, Eckert J . Adaptive responses of the embryo to maternal diet and consequences for post-implantation development. Reprod Fertil Dev. 2012; 24(1):35-44. DOI: 10.1071/RD11905. View

4.
Leese H . Metabolism of the preimplantation embryo: 40 years on. Reproduction. 2012; 143(4):417-27. DOI: 10.1530/REP-11-0484. View

5.
Kirkegaard K, Agerholm I, Ingerslev H . Time-lapse monitoring as a tool for clinical embryo assessment. Hum Reprod. 2012; 27(5):1277-85. DOI: 10.1093/humrep/des079. View