alexa Intraindividual variability of homocysteine and related thiols concentrations in follicular fluid.
Reproductive Medicine

Reproductive Medicine

Journal of Fertilization: In Vitro - IVF-Worldwide, Reproductive Medicine, Genetics & Stem Cell Biology

Author(s): Kralikova M, Melounova J, Crha I, Matejovicova M, Zakova J,

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Abstract PURPOSE: To determine intraindividual variability in concentrations of homocysteine and related thiols in follicular fluids of particular follicles after ovarian stimulation and assess the differences between follicles with/or without oocytes. METHODS: HPLC-FD analysis of plasma and follicular fluid cysteine, homocysteine, cysteinylglycine and glutathione in women undergoing IVF. RESULTS: In blood plasma, the homocysteine, cysteine, and cysteinylglycine concentrations decreased significantly during stimulation with rec FSH (p<0.001). We found significant differences in concentrations of cysteine and glutathione between follicles with or without retrieved oocytes. High intraindividual variability in concentrations of thiols was determined. CONCLUSIONS: The concentration variability of thiols between single follicles is very high and we recommend mean at least from 3 follicles with/or without oocytes for characterization of each woman. It is the best to examine individual follicles for further research and analysis of fertility outcomes.
This article was published in J Assist Reprod Genet and referenced in Journal of Fertilization: In Vitro - IVF-Worldwide, Reproductive Medicine, Genetics & Stem Cell Biology

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