Which is the safer method for trophectoderm biopsy in mouse blastocyst, mechanical or laser?
Introduction: This study was conducted to compare hatching rates after assisted hatching, re-expansion rates after trophectoderm biopsy, and survival rates after cryopreservation using different methods of assisted hatching and biopsy in mouse embryo. Materials and Methods: Five-week-old female mice...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IMR Press
2020-02-01
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| Series: | Clinical and Experimental Obstetrics & Gynecology |
| Subjects: | |
| Online Access: | https://www.imrpress.com/journal/CEOG/47/1/10.31083/j.ceog.2020.01.4960 |
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| Summary: | Introduction: This study was conducted to compare hatching rates after assisted hatching, re-expansion rates after trophectoderm biopsy, and survival rates after cryopreservation using different methods of assisted hatching and biopsy in mouse embryo. Materials and Methods: Five-week-old female mice (C57BL/CBA) were superovulated, and two-cell embryos were collected. All embryos were cultured to blastocyst stage. For assisted hatching and separating trophectoderm from blastocyst, laser device and hand-made pipette were used respectively. Hatching rates after assisted hatching, re-expansion rates after trophectoderm biopsy, and survival rates after cryopreservation were calculated. Results: Hatching rate was 92% in mechanically assisted hatching group and 90% in laser group, respectively. After mechanically assisted hatching, re-expansion rate was 91.3% and survival rate was 87% in biopsy by pipette and laser group, respectively. In laser hatching group, re-expansion rate was 88.9% with biopsy by pipette and survival rate was 84.4% with biopsy by laser. Conclusion: Throughout the study, mechanical technique and laser technique showed no differences in the safety profiles in trophectoderm biopsy procedure. |
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| ISSN: | 0390-6663 |