Miriam Almagor1, Albert Hazav, Haim Yaffe. 1. Division of Clinical Laboratories, Bikur Cholim Hospital, Jerusalem, Israel. malmagor@bikurholim.org.il
Abstract
BACKGROUND: The complex regulation of endometrial receptivity and embryo implantation involves cytokines, several of which are stimulators of the acute-phase reactant C-reactive protein (CRP). The purpose of this study was to evaluate the concentrations of serum CRP in women treated by IVF. METHODS: Seventy-two women who underwent IVF treatment were prospectively studied. The levels of serum CRP were evaluated on the following days: oocyte retrieval, embryo transfer, 5, 6 or 7 days afterwards and 12 days after embryo transfer. RESULTS: CRP levels increased from 6.8 +/- 9.5 mg/l on oocyte retrieval day to 14.6 +/- 12.5 mg/l on days 5-7 post-transfer (P<0.0001). The ratios of CRP levels for transfer day/pick-up day were 1.2 in women who conceived versus 2.5 in the non-pregnant group (P=0.01). CONCLUSION: In women treated by IVF the concentrations of CRP in blood increase significantly during the first week following oocyte retrieval. Successful outcome is associated with a relative small increment in CRP on the day of embryo transfer.
BACKGROUND: The complex regulation of endometrial receptivity and embryo implantation involves cytokines, several of which are stimulators of the acute-phase reactant C-reactive protein (CRP). The purpose of this study was to evaluate the concentrations of serum CRP in women treated by IVF. METHODS: Seventy-two women who underwent IVF treatment were prospectively studied. The levels of serum CRP were evaluated on the following days: oocyte retrieval, embryo transfer, 5, 6 or 7 days afterwards and 12 days after embryo transfer. RESULTS:CRP levels increased from 6.8 +/- 9.5 mg/l on oocyte retrieval day to 14.6 +/- 12.5 mg/l on days 5-7 post-transfer (P<0.0001). The ratios of CRP levels for transfer day/pick-up day were 1.2 in women who conceived versus 2.5 in the non-pregnant group (P=0.01). CONCLUSION: In women treated by IVF the concentrations of CRP in blood increase significantly during the first week following oocyte retrieval. Successful outcome is associated with a relative small increment in CRP on the day of embryo transfer.
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