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Chen K, Gao M, Wu Y, Hu Z, Tang L, Li M, Tian M, Cui H, Huang Y, Han Y, Li L, Li Y, Li Y, Wu Z, Tang Z, Zhang R, Wu Y, Zhang Y, Guo Y, Zhang H, Xiang L, Yan J. Two laser-assisted hatching methods of embryos in ART: a systematic review and meta-analysis. BMC Pregnancy Childbirth 2024; 24:300. [PMID: 38649878 PMCID: PMC11034172 DOI: 10.1186/s12884-024-06380-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 02/29/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND Laser-assisted hatching (LAH) stands as the predominant technique for removing the zona pellucida (ZP) in embryos, primarily consisting of two methods: drilling laser-assisted hatching (D-LAH) and thinning laser-assisted hatching (T-LAH). Presently, both methods have limitations, and their comparative efficacy for embryo implantation and clinical pregnancy remains uncertain. AIM Evaluate the impact of D-LAH and T-LAH on clinical pregnancy rates within assisted reproductive technology (ART). METHODS We systematically searched electronic databases including PubMed, Web of Science, and Cochrane Library until July 20, 2022. This study encompassed observational studies and randomized controlled trials (RCTs). A 95% confidence interval (CI) was utilized for assessing the risk ratio (RR) of pregnancy outcomes. The level of heterogeneity was measured using I2 statistics, considering a value exceeding 50% as indicative of substantial heterogeneity. RESULTS The meta-analysis scrutinized 9 studies involving 2405 clinical pregnancies from D-LAH and 2239 from T-LAH. Findings suggested no considerable variation in the clinical pregnancy rates between the two techniques (RR = 0.93, 95% CI: 0.79-1.10, I2 = 71%, P = 0.41). Subgroup analyses also revealed no substantial differences. However, D-LAH exhibited a notably higher occurrence of singleton pregnancies compared to T-LAH (RR = 2.28, 95% CI: 1.08-4.82, I2 = 89%, P = 0.03). There were no noteworthy distinctions observed in other secondary outcomes encompassing implantation rate, multiple pregnancies, ongoing pregnancy, miscarriage, premature birth, and live birth. CONCLUSION Both the primary findings and subgroup analyses showed no marked variance in clinical pregnancy rates between D-LAH and T-LAH. Therefore, patients with varying conditions should select their preferred LAH technique after assessing their individual situation. However, due to the restricted number of studies involved, accurately gauging the influence of these laser techniques on clinical outcomes is challenging, necessitating further RCTs and high-quality studies to enhance the success rate of ART. TRIAL REGISTRATION PROSPERO: CRD42022347066.
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Affiliation(s)
- Kexin Chen
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Mengying Gao
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Yao Wu
- The First People's Hospital of Qujing, Qujing, Yunnan, China
| | - Zhixin Hu
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Lu Tang
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Minyao Li
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Mei Tian
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Hao Cui
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Yanrong Huang
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Youzhen Han
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Lei Li
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Yonggang Li
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Yunxiu Li
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Ze Wu
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Zouying Tang
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Ronghui Zhang
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Yuerong Wu
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China
| | - Yizhi Zhang
- Kunming Maternity and Child Care Hospital, Kunming, Yunnan, China
| | - Yan Guo
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China
| | - Hongqing Zhang
- Kunming Maternity and Child Care Hospital, Kunming, Yunnan, China.
| | - Lifeng Xiang
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China.
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China.
| | - Jiacong Yan
- Department of Reproductive Medicine, NHC Key Laboratory of Healthy Birth and Birth Defect Prevention in Western China, First People's Hospital of Yunnan Province, Kunming, China.
- KUST-YPFPH Reproductive Medicine Joint Research Center, Kunming, Yunnan, China.
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Zhang L, Zhou YE, Wu YJ, Wu LM, Li SS, Zhang L, Jin Z, Shu CY, Xu WH, Shu J. Thinning or Opening: A Randomized Sibling-Embryo Pilot Trial on the Efficacy of Two Laser-Assisted Hatching Modes During the Extended Culture of Highly Fragmented Cleavage Embryos. Front Endocrinol (Lausanne) 2022; 13:927834. [PMID: 35832433 PMCID: PMC9271933 DOI: 10.3389/fendo.2022.927834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/25/2022] [Indexed: 11/13/2022] Open
Abstract
A randomized sibling-embryo pilot trial investigated whether two ways of laser-assisted hatching result in different blastulation and clinical outcomes after extended in vitro culture process of highly fragmented day-3 cleavage embryos. From 92 couples, a total of 315 highly fragmented day-3 embryos (the fragmentation >25%) were recruited and randomized into laser-assisted zona thinning (LAT, n=157) and opening (LAO, n=158) groups, and then underwent a blastocyst culture in vitro. The main endpoint measurements including blastocyst formation and grading as well as the clinical pregnancy after blastocyst transfer were obtained during the treatment procedure of in vitro fertilization and embryo transfer, and then analyzed with generalized estimating equation (GEE) and/or time-to blastocyst analysis models. A total of 166 day-3 embryos developed into blastocyst stage (52.70%), of which 97 were viable blastocysts (30.79%), and 42 top-quality ones (13.33%). LAT did not have any inferior or superior to LAO in the endpoints of either total, viable, top-quality or hatched blastocyst formation, with the ORs (95%CI) from GEE model as 0.89 (0.55-1.45), 0.71 (0.42-1.21), 1.12 (0.56-2.25) and 0.68 (0.42-1.12) respectively for LAT treatment. And the time-to-blastocyst analysis showed a similar result. Additionally, no difference in clinical outcomes after blastocyst transfer was found between the two groups. The author concluded that when applying the LAHs during the extended culture of highly fragmented embryos, both LAT and LAO can generate a promising clinical outcome, and the LAT operation be equivalent to the LAO. Future well-designed, multiple-center, larger-sample investigations are required to ascertain above conclusion.
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Affiliation(s)
- Ling Zhang
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Yi-Er Zhou
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Yue-Jin Wu
- Institute of Food Science and Engineering, Hangzhou Medical College, Hangzhou, China
| | - Li-Mei Wu
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Shi-Shi Li
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Lin Zhang
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Zhen Jin
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Chong-Yi Shu
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Wei-Hai Xu
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Jing Shu
- Reproductive Medicine Center, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
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Zhu J, Huang X, Song W. Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives. ACS NANO 2021; 15:18708-18741. [PMID: 34881870 DOI: 10.1021/acsnano.1c05806] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Laser-induced graphene (LIG) is produced rapidly by directly irradiating carbonaceous precursors, and it naturally exhibits as a three-dimensional porous structure. Due to advantages such as simple preparation, time-saving, environmental friendliness, low cost, and expanding categories of raw materials, LIG and its derivatives have achieved broad applications in sensors. This has been witnessed in various fields such as wearable devices, disease diagnosis, intelligent robots, and pollution detection. However, despite LIG sensors having demonstrated an excellent capability to monitor physical and chemical parameters, the systematic review of synthesis, sensing mechanisms, and applications of them combined with comparison against other preparation approaches of graphene is still lacking. Here, graphene-based sensors for physical, biological, and chemical detection are reviewed first, followed by the introduction of general preparation methods for the laser-induced method to yield graphene. The preparation and advantages of LIG, sensing mechanisms, and the properties of different types of emerging LIG-based sensors are comprehensively reviewed. Finally, possible solutions to the problems and challenges of preparing LIG and LIG-based sensors are proposed. This review may serve as a detailed reference to guide the development of LIG-based sensors that possess properties for future smart sensors in health care, environmental protection, and industrial production.
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Affiliation(s)
- Junbo Zhu
- Department of Chemistry, Capital Normal University, Beijing 100048, China
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Beijing 100048, China
| | - Xian Huang
- Department of Biomedical Engineering, Tianjin University, Tianjin 300072, China
| | - Weixing Song
- Department of Chemistry, Capital Normal University, Beijing 100048, China
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Beijing 100048, China
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Laser-assisted hatching zona thinning does not improve the pregnancy outcomes of poor-quality blastocysts in frozen-thawed embryo transfer cycle: a retrospective cohort study. Lasers Med Sci 2021; 37:1605-1614. [PMID: 34480664 DOI: 10.1007/s10103-021-03409-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/23/2021] [Indexed: 02/05/2023]
Abstract
It had been suggested, after facilitating the hatching process, improved pregnancy outcomes could be attained in embryos with thick and hard zona. This study aimed to determine the effect of zona thinning on pregnancy outcomes in poor-quality frozen-thawed blastocysts. This retrospective study included 230 women (≤ 40 years) who underwent frozen embryo transfer of poor-quality blastocysts (scored < 3BB). In total, 105 patients were in the assisted hatching group in which the zona was thinned by laser before transfer and 125 patients were in the control group in which the blastocysts were non-manipulated. Patients' demographics, cycle characteristics, and pregnancy outcomes were compared between the assisted hatching group and the control group. Further, regression analysis was applied to test the correlation between assisted hatching and live birth. All parameters in the patients' demographic characteristics and the cycle's characteristics were not significantly different between two groups. As for pregnancy outcomes, the second trimester pregnancy loss was significantly higher in the assisted hatching group (P = 0.035). Other pregnancy outcomes, including implantation rate, clinical pregnancy rate, biochemical miscarriage rate, the first trimester pregnancy loss, ongoing pregnancy rate, and live birth rate were comparable between two groups. The logistic regression analysis demonstrated no association between live birth and assisted hatching (univariate, OR = 0.787, P > 0.05; multivariate, OR = 0.652, P > 0.05), and the area under the receiver operating characteristic curve of the regression model was almost 0.7. It suggested that zona thinning may not be supposed to perform on poor-quality, frozen-thawed blastocysts. The indications of assisted hatching were still needed to further investigate.
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Efficacy of therapies and interventions for repeated embryo implantation failure: a systematic review and meta-analysis. Sci Rep 2021; 11:1747. [PMID: 33462292 PMCID: PMC7814130 DOI: 10.1038/s41598-021-81439-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/21/2020] [Indexed: 01/29/2023] Open
Abstract
The aim of the present systematic review and meta-analysis was to assess the effect of the different therapeutic options for repeated embryo implantation failure (RIF) on a subsequent IVF cycle outcome. Twenty-two RCTs and nineteen observational studies were included. Pooling of results showed a beneficial effect of intrauterine PBMC infusion on both CPR (RR 2.18; 95% CI 1.58-3.00; p < 0.00001; OR 2.03; 95% CI 1.22-3.36; p = 0.006) and LBR (RR 2.41; 95% CI 1.40-4.16; p = 0.002; OR 3.73; 95% CI 1.13-12.29; p = 0.03), of subcutaneous G-CSF administration on CPR (RR 2.29; 95% CI 1.58-3.31; p < 0.0001) and of intrauterine PRP infusion on CPR (RR 2.45; 95% CI 1.55-3.86; p = 0.0001). Observational studies also demonstrated a positive effect of IVIG and intrauterine hCG infusion on both CPR and LBR and of atosiban on CPR. Studies investigating intrauterine G-CSF infusion, LMWH, intravenous intralipid, hysteroscopy, blastocyst-stage ET, ZIFT, PGT-A and AH failed to observe an impact on IVF outcome. The quality of the evidence that emerged from RCTs focused on intrauterine PBMC infusion and subcutaneous G-CSF administration was moderate. For all other therapies/interventions it varied from low to very low. In conclusion, intrauterine PBMC infusion and subcutaneous G-CSF administration are the most promising therapeutic options for RIF. However, further well conducted RCTs are necessary before their introduction into clinical practice.
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Wang Y, Chen C, Liang J, Fan L, Liu D, Zhang X, Liu F. A comparison of the clinical effects of thinning and drilling on laser-assisted hatching. Lasers Med Sci 2021; 37:1-9. [PMID: 33442852 PMCID: PMC8803699 DOI: 10.1007/s10103-020-03230-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 12/22/2020] [Indexed: 01/08/2023]
Abstract
To systematically investigate the effects of two methods used for laser-assisted hatching (LAH) on clinical outcomes after day 4 (D4) on frozen-embryo-transfer (FET) cycles. Data from 11471 infertile patients who underwent FET cycles between January 2014 and October 2018 was retrospectively analyzed. The 1410 patients who met the inclusion criteria were further categorized into two groups based on the hatching procedure used: the thinning laser-assisted hatching group (T-LAH, 716 patients), and the drilling laser-assisted hatching group (D-LAH, 694 patients). The baseline characteristics of the patients were consistent between the two groups. However, the rates of implantation and clinical pregnancy were significantly higher in the T-LAH group compared to the D-LAH group (32.73% vs. 29.09%, P < 0.01, and 50.98% vs. 43.95%, P < 0.01). The proportion of live birth was also higher in the T-LAH group, but the difference was insignificant (39.11% vs. 36.89%, P > 0.05). Moreover, there were no significant differences in rates of miscarriages, multiple pregnancies, ectopic pregnancies, preterm births, and congenital disabilities between the two groups. Nonetheless, significantly higher rates of implantation and pregnancy were reported in the T-LAH group compared to the D-LAH group among patients aged <35 years, patients with at least one previously failed cycle, and patients with an endometrial thickness of 8-10 mm. T-LAH is superior to D-LAH in improving clinical implantation and pregnancy outcomes in D4 FET, particularly in patients aged <35 years with at least one previously failed cycle or an endometrial thickness of 8-10 mm. The findings of this study provide theoretical support for clinical individualized diagnosis and treatment of patients with infertility.
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Affiliation(s)
- Yujiang Wang
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Chuangqi Chen
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Jiaying Liang
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Lin Fan
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Dun Liu
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Xiqian Zhang
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Fenghua Liu
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China.
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Huo P, Deng K, Wang L, Li M, Yao J, Le J, Lei X, Zhang S. The effect of laser-assisted hatching on the methylation and expression pattern of imprinted gene IGF2/H19 in mouse blastocysts and offspring. J Assist Reprod Genet 2020; 37:3057-3067. [PMID: 33089439 DOI: 10.1007/s10815-020-01975-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/07/2020] [Indexed: 11/28/2022] Open
Abstract
PURPOSE This study aimed to determine the effects of drilling and thinning treatment of laser-assisted hatching on the expression and methylation of imprinted gene IGF2/H19 in embryos and offspring. METHODS The prehatching blastocysts with treatment of drilling or thinning, or control prehatching blastocysts, were transplanted in surrogate uteri. The DNA methylation of IGF2/H19 imprinting control region (ICR) and the expression of IGF2 and H19 were respectively evaluated using bisulfite conversion-mediated sequencing and real-time PCR. RESULTS The drilling group showed a significant increase in the development rate of hatched blastocysts in comparison with the control and thinning group. DNA methylation level of IGF2/H19 ICR of hatched blastocysts in the thinning group was 27.33% in comparison with the 38.67% and 36% observed in the control and drilling group. The thinning treatment increased the DNA methylation level of IGF2/H19 ICR in the placenta in comparison with the control and drilling group. The drilling and thinning treatment decreased the expression level of H19 mRNA in prehatching and hatched blastocysts as well as placenta, while a significant increase in the expression level of H19 mRNA of offspring was observed in the thinning group. The thinning treatment increased the expression level of IGF2 mRNA of prehatching blastocysts and offspring and a significant decrease in placenta, while the drilling treatment resulted in a significant increase in the expression level of IGF2 mRNA of hatched blastocysts and placenta. CONCLUSION These observations suggested that drilling used for hatching of in vitro cultured mouse blastocysts may improve the production of offspring.
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Affiliation(s)
- Peng Huo
- School of Public and Health, Guilin Medical University, Guilin, 541004, China
| | - Kai Deng
- Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, China
| | - Lulu Wang
- Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, China
| | - Man Li
- Department of Reproductive Medical Center, The Affiliated Hospital of Guilin Medical University, Guilin, 541001, China
| | - Jun Yao
- Department of Reproductive Medical Center, The Affiliated Hospital of Guilin Medical University, Guilin, 541001, China
| | - Jianghua Le
- Department of Reproductive Medical Center, The Affiliated Hospital of Guilin Medical University, Guilin, 541001, China
| | - Xiaocan Lei
- Clinical Anatomy & Reproductive Medicine Application Institute, Department of Histology and Embryology, University of South China, Hengyang, 421001, China.
| | - Shun Zhang
- Department of Reproductive Medical Center, The Affiliated Hospital of Guilin Medical University, Guilin, 541001, China.
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