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  • Title: Noninvasive metabolomic profiling of embryo culture media using Raman and near-infrared spectroscopy correlates with reproductive potential of embryos in women undergoing in vitro fertilization.
    Author: Seli E, Sakkas D, Scott R, Kwok SC, Rosendahl SM, Burns DH.
    Journal: Fertil Steril; 2007 Nov; 88(5):1350-7. PubMed ID: 17923129.
    Abstract:
    OBJECTIVE: To determine if metabolomic profiling of embryo culture media correlates with reproductive potential of individual embryos. DESIGN: Prospective study. SETTING: An academic and a private assisted reproduction program; a university research center. PATIENT(S): Women undergoing assisted reproduction treatment. INTERVENTION(S): Sixty-nine spent media samples from 30 patients with known outcome (0 or 100% sustained implantation rates) were individually collected after embryo transfer on day 3 and were evaluated using Raman and/or near-infrared spectroscopy. The spectra obtained from each instrument were separately analyzed using a wavelength selective genetic algorithm to determine regions predictive of pregnancy outcome. Viability indices reflective of reproductive potential were calculated for each sample. To avoid random correlations, a leave-one-out cross-validation was used. Sensitivity and specificity of predicting viability (described as implantation and delivery) were calculated. MAIN OUTCOME MEASURE(S): Metabolomic profile of culture media and embryo viability. RESULT(S): Viability indices calculated by Raman or near-infrared spectroscopy were higher for embryos that implanted and resulted in a delivery, compared with those that failed to implant. Raman spectroscopy predicted viability of individual embryos with a sensitivity of 86% and a specificity of 76.5%; near-infrared provided a sensitivity of 75% and a specificity of 83.3%. CONCLUSION(S): Rapid, noninvasive metabolomic profiling of human embryo culture media using Raman or near-infrared spectroscopy combined with bioinformatics correlates with pregnancy outcome.
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