International Journal of Reproductive BioMedicine
Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences of Yazd
Vol. 14, No. 10, 2016, pp. 649-656
Bioline Code: rm16084
Full paper language: English
Document type: Research Article
Document available free of charge
International Journal of Reproductive BioMedicine, Vol. 14, No. 10, 2016, pp. 649-656
© Copyright 2016 - Iranian Journal of Reproductive Medicine
Effect of L-carnitine on in vitro developmental rate, the zona pellucida and hatching of blastocysts and their cell numbers in mouse embryos|
Khanmohammadi, Nasrin; Movahedin, Mansoureh; Safari, Manouchehr; Sameni, Hamid Reza; Yousefi, Behpour; Jafari, Behnaz & Zarbakhsh, Sam
L-carnitine (LC) is an antioxidant with the ability to promote the growth in vitro embryo.
Objective: The goal was to evaluate the effect of LC on some indicators of embryo development and blastocyst quality including zona pellucid (ZP) thickness, the hatching of blastocysts and their cell numbers.
Materials and Methods: Mouse embryos were randomly divided into five groups and incubated with different concentrations of LC (I; 0, II; 0.5, III; 1, IV; 2 and V; 4 mg/ml) from 2-cell to hatched blastocyst. The percentage of blastocysts and hatched blastocysts was calculated. Blastocysts ZP thickness was measured and the number of blastocyst cells was counted using Hoechst and propidium iodide (PI) staining.
Results: The results showed concentration of 0.5 mg/ml of LC had an antioxidant effect as in this group, the percentage of blastocysts and hatched blactocysts (p=0.01), the ZP thickness (p=0.00) and the number of blastocyst inner cell mass were significantly more favorable than the control group (p=0.03); and concentration of 4 mg/ml of LC had a toxic effect on embryo development and blastocyst quality (p=0.00).
Conclusion: The results suggest that LC may increase the number of blastocyst cells, which probably helps to expand the blastocyst and thinning of the ZP thickness and, therefore, creating a successful hatching for implantation.
L-carnitine; Embryo culture; Zona pellucida; Blastocyst inner cell mass
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