Effect of N-Acetyl-D-Glucosamine on Bovine Sperm-Oocyte Interactions

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概要

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• N-Acetyl-D-glucosamine (GlcNAc) is a major component of glycosaminoglycan, which is involved in sperm-oocyte interactions. We examined the effect of adding GlcNAc and other monosaccharides, D-mannose and D-fucose, to the in vitro fertilization (IVF) medium on bovine sperm-oocyte interactions. In medium in which sperm and a zona pellucida (ZP) were co-incubated with monosaccharides for 5 min, addition of GlcNAc (5 or 25 mM) significantly reduced the number of sperm that attached to the ZP. Pretreatment of gametes with GlcNAc (5 mM) prior to co-incubation also suppressed sperm-ZP attachment. Addition of GlcNAc (5 or 25 mM) to the medium in which sperm and a ZP were co-incubated for 5 h, however, significantly increased the number of sperm binding to and penetrating the ZP in a concentration-related manner. The other monosaccharides, D-fucose and D-mannose, did not have this effect. Supplementation of the sperm-oocyte co-incubation medium with 5 mM GlcNAc also enhanced the rate of polyspermic fertilization. When the ZPs were removed from the oocytes, GlcNAc did not affect the fertilization rate. Furthermore, incubation of sperm with 5 mM GlcNAc induced sperm membrane destabilization and an acrosome reaction, as evidenced by the hypo-osmotic swelling test and fluorescein isothiocyanate-labeled peanut agglutinin/propidium iodide (FITC-PNA/PI) staining. Finally, GlcNAc suppressed ZP hardening following fertilization, as determined by measuring the time required for pronase to dissolve the ZP. In conclusion, supplementation of IVF medium with GlcNAc has various effects on sperm-oocyte interactions including suppression of initial attachment, induction of sperm membrane destabilization and acrosome reaction, increase in the number of sperm secondarily bound to and penetrating the ZP, suppression of ZP hardening following sperm-oocyte co-incubation and increase in the rate of polyspermic fertilization.

• 日本繁殖生物学会の論文
• 2009-12-01

著者

• Monji Yasunori

  Tokyo University Of Agriculture

• IWATA Hisataka

  Tokyo University of Agriculture

• SAKAGUCHI Yosuke

  Tokyo University of Agriculture

• KUWAYAMA Takehito

  Tokyo University of Agriculture

関連論文

• Renewal of techniques related to embryo transfer in cattle : a novel superovulation method using aluminum hydroxide gel
• Effect of N-Acetyl-D-Glucosamine on Bovine Sperm-Oocyte Interactions
• Effect of Modification of Ovary Preservation Solution by Adding Glucose on the Maturation and Development of Pig Oocytes after Prolonged Storage
• Effect of Maternal Age on the Ratio of Cleavage and Mitochondrial DNA Copy Number in Early Developmental Stage Bovine Embryos
• Relationship between Plasma Progesterone Concentration and Number of Conceptuses and Their Growth in Superovulated Cattle
• Resveratrol Improves the Mitochondrial Function and Fertilization Outcome of Bovine Oocytes

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