INITIAL EVALUATION OF THE EFFICIENCY OF CRYOPROTECTANT-FREE VITRIFICATION IN PCR TUBES ON A LOW NUMBER OF HUMAN SPERMATOZOA
Nội dung chính của bài viết
Tóm tắt
Objectives: To inititally evaluate the efficiency of cryoprotectant-free vitrification in PCR tubes on a low number of human spermatozoa. Methods: A laboratory experimental study was conducted on 30 severe oligospermia treated at the Military Institute of Clinical Embryology and Histology, Vietnam Military Medical University. The semen samples were vitrified and thawed at the following times, then sperm concentration, morphology, viability, and motility were evaluated after thawing. Results: The viable CSF, motile CSF when vitrifing without using CPAs were 50.45 ± 4.63; 43.35 ± 4.81 (1-week storage), 45.24 ± 4.33; 37.24 ± 4.39 (4-week storage) and 40.69 ± 3.96; 33.96 ± 4.14 (8-week storage), respectively. Conclusion: Vitrification of human sperm can be achieved without cryoprotectants and could be recommended for routine assisted reproductive technology.
Chi tiết bài viết
Từ khóa
Sperm vitrification, Oligospermia, Free-cryoprotectants
Tài liệu tham khảo
2. P Desrosiers, C Légaré, P Leclerc et al. Membranous and structural damage that occur during cryopreservation of human sperm may be time-related events. 2006; 85(6):1744-1752.
3. G Vajta and ZPJRBO Nagy. Are programmable freezers still needed in the embryo laboratory? Review on vitrification. 2006; 12(6):779-796.
4. A Hasegawa, K Mochida, T Tomishima et al. Microdroplet in vitro fertilization can reduce the number of spermatozoa necessary for fertilizing oocytes. 2014; 60(3):187-193.
5. Y Chen, L Li, Y Qian et al. Small-volume vitrification for human spermatozoa in the absence of
cryoprotectants by using Cryotop. 2015; 47(6):694-699.
6. WHO-Laboratory manual for the examination and processing of human semen 6th 2021.
7. Nguyễn Thị Hằng. Kết quả bảo quản lạnh mẫu tinh dịch bình thường và thiểu tinh nặng khi sử dụng máy Nicool LM10 và phương pháp đông tinh viên. Luận văn thạc sỹ y học. Trường đại học Y Hà Nội. 2018.
8. V Isachenko, E Isachenko, R Maettner, et al. Vitrification of human ICSI/IVF spermatozoa without cryoprotectants: New capillary technology. 2007; 33(3):462-468.
9. Wang M, Todorov P, Wang W, Isachenko E, Rahimi G, Mallmann P, et al. Cryoprotectants-free vitrification and conventional freezing of human spermatozoa: A comparative transcript profiling. Int J Mol Sci. 2022; 23(6).
10. R Widyastuti, R Lesmana, A Boediono, S Sumarsono. Effect of cryoprotectants on sperm vitrification. Advances in Biomolecular Medicine: CRC Press. 2017; 119-122.