Vitamin D receptor gene polymorphisms and the effectiveness of assisted reproductive technology by A. Yu. Romanov, A. G. Syrkasheva, A. E. Donnikov, N. V. Dolgushina

“…The number of follicles, oocyte-cumulus complexes, mature and immature oocytes, the presence of oocyte dysmorphisms, number of zygotes, fertilization rate, and the number of obtained blastocysts were evaluated. The determination of three polymorphisms of the VDR gene (FokI – rs2228570, BsmI – rs1544410, TaqI – rs731236) was performed by real-time polymerase chain reaction.Results. …”
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Importance of Viral Disease in Dairy Cow Fertility by D. Claire Wathes, Chike F. Oguejiofor, Carole Thomas, Zhangrui Cheng

“…BTV-8 also impairs the development of hatched blastocysts; furthermore, infection around the time of breeding with either virus appears to reduce conception rates. …”
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#86 : Use of Triptorelin Versus Human Chorionic Gonadotropin as Ovulation Trigger by Karen Ng, Pui Wah Jacqueline Chung, Lai Ping Cheung

“…In the triptorelin group, the total number of mature sized follicles, estrogen level at trigger, oocytes retrieved, number of blastocysts were significantly higher compared to the hCG group (Table 2). …”
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Reproductive technologies for conservation of genetic resources of endangered Equidae: a review by George Yu. Maksudov, Ksenia I. Egorova

“…For transplantation of blastocysts from Przewalski's horses and Grant's zebras E. quagga boehmi to domestic donkeys E. africanus asinus and ponies E. f. caballus, both surgical and non-surgical methods were used. …”
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Preimplantation genetic testing for Aicardi–Goutières syndrome induced by novel compound heterozygous mutations of TREX1: an unaffected live birth by Huiling Xu, Jiajie Pu, Suiling Lin, Rui Hu, Jilong Yao, Xuemei Li

“…Results A novel compound heterozygous mutation in TREX1 gene was found in the proband causing AGS. A total of 3 blastocysts formed after intracytoplasmic sperm injection were biopsied. …”
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Outcome of Couples with Reciprocal Translocation Carrier Undergoing the First Preimplantation Genetic Testing Cycles by Cai-Xia Lei, Shuo Zhang, Hai-Yan Sun, Sai-Juan Zhu, Jing Zhou, Jing Fu, Yi-Juan Sun, Jun-Ping Wu, Yue-Ping Zhang, Xiao-Xi Sun

“…Methods: We conducted a retrospective analysis of 238 RCP couples (124 female and 114 male carriers) divided by gender of carrier from March 2014 to March 2017. Blastocysts were divided by day 5 and day 6. Females were divided into older (≥38 years) and younger (<38 years). …”
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REGULATORY T CELLS IN FOLLICULAR FLUID OF WOMEN UNDERGOING IVF TREATMENT by E. A. Andreeva, N. A. Khonina, M. A. Tikhonova, E. V. Batorov, N. M. Pasman, E. R. Chernykh

“…High fertilization index (0.75-1.0), reflecting maturity of the oocytes was associated with higher count of CD4-FoxP3+ T cells in the FF. Better quality of blastocysts was associated with a higher count of both CD4-FoxP3+ and CD4+FoxP3+ T cells. …”
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The Protective Effect of Catechin on Fertility in Streptozotocin-Induced Diabetic Male Mice by R Keramati, Gh Najafi, R Seyrafi, A Shalizar-Jalali

“…Findings: In diabetic mice, sperm count (28.63±1.24) and sperm motility percentage (53.47±1.46) and live sperms (55.96±1.34), as we as zygote (57.68±1.56), two-cell embryos (62.93±3.92), blastocysts (41.69±1.49) and hatched embryos (34.51±2.98) were significantly reduced compared to the control group (p<0.05). …”
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<i>ZSCAN4</i> Regulates Zygotic Genome Activation and Telomere Elongation in Porcine Parthenogenetic Embryos by Xiao-Han Li, Ming-Hong Sun, Wen-Jie Jiang, Dongjie Zhou, Song-Hee Lee, Geun Heo, Zhi Chen, Xiang-Shun Cui

“…The percentage of four-cell stage embryos, five- to eight-cell stage embryos, and blastocysts was lower in the <i>ZSCAN4</i> knockdown group than in the control group. …”
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Telomere Length and Telomerase Activity of Granulosa Cells and Follicular Fluid in Women Undergoing In Vitro Fertilization by Sándor Péntek, Ákos Várnagy, Bálint Farkas, Péter Mauchart, Krisztina Gödöny, Tímea Varjas, Tamás Kőszegi, Péter Kaltenecker, Rita Jakabfi-Csepregi, Kálmán Kovács, József Bódis, Endre Sulyok

“…Importantly, 8-OHdG levels both in GCs and FF had significant negative impact on the number of the retrieved and MII oocytes (<i>p</i> < 0.01), whereas FF 8-OHdG was negatively related further to the number of fertilized oocytes and blastocysts (<i>p</i> < 0.01). In conclusion, we could not confirm the direct association of telomere function and reproductive potential. …”
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miR‐1246 is implicated as a possible candidate for endometrium remodelling facilitating implantation in buffalo (Bubalus bubalis) by Pratiksha Dubey, Vipul Batra, Parul Sarwalia, Samiksha Nayak, Rubina Baithalu, Rakesh Kumar, Tirtha Kumar Datta

“…Methods The in vitro produced blastocysts were cultured on a cumulus feeder layer for 21 days. …”
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Frozen-thawed embryo transfer in modified natural cycles: a retrospective analysis of pregnancy outcomes in ovulatory women with vs. without spontaneous luteinizing hormone surge by Hongjuan Ye, Liya Shi, Xinxin Quan, Xue Xue, Ying Qian, Hui Tian, Songguo Xue, Lihua Sun

“…For cleavage embryos, FET was conducted 4 and 5 days after hCG injection in women with and without LH surge, respectively. For blastocysts, FET was conducted 6 and 7 days after hCG injection in women with and without LH surge, respectively. …”
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The effects of supplemented sericin on in vitro maturation and preimplantation development of mouse embryos: An experimental study by Omid Banafshi, Sherko Nasseri, Leila Farhadi, Masoud Alasvand, Mohammad Bagher Khadem-Erfan, Javad Hosseini, Saber Miraki, Fardin Fathi

“…Among the follow-up groups, in the IVM + in vitro development group, the number of oocytes was higher after passing the IVM and IVF and reaching the blastocysts stage when 1% sericin was used, compared with other sericin subgroups. …”
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Production of mouse offspring from inactivated spermatozoa using horse PLCζ mRNA by Yunosuke YAMAMOTO, Naoki HIROSE, Satoshi KAMIMURA, Sayaka WAKAYAMA, Junya ITO, Masatoshi OOGA, Teruhiko WAKAYAMA

“…The concentration did not affect parthenogenetic embryo development in vitro. Relatively normal blastocysts were obtained with the same developmental rate (52–53% or 48–51%, respectively) when inactive spermatozoa were injected into activated oocytes using ePLCζ or mPLCζ mRNA injection. …”
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Clinical practice and outcomes of preimplantation genetic testing for CMT1A using a novel direct detection method by Yuqian Wang, Yujun Liu, Ying Kuo, Shuo Guan, Nan Wang, Ying Lian, Jin Huang, Xu Zhi, Ping Liu, Rong Li, Liying Yan, Xiaohui Zhu, Jie Qiao

“…The direct detection results for all embryos were consistent with the linkage analyses, suggesting a 100 % accuracy rate, and the aneuploidy rate of the biopsied blastocysts was 33.3 %. Eventually, 18 of the 45 diagnosed embryos were deemed suitable for transfer. …”
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Trophectoderm-Specific Knockdown of LIN28 Decreases Expression of Genes Necessary for Cell Proliferation and Reduces Elongation of Sheep Conceptus by Asghar Ali, Mark D. Stenglein, Thomas E. Spencer, Gerrit J. Bouma, Russell V. Anthony, Quinton A. Winger

“…Day 9-hatched sheep blastocysts were incubated with lentiviral particles to deliver shRNA targeting LIN28 specifically to trophectoderm cells. …”
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#316 : Improved Time to Pregnancy When Combining an Artificial Intelligence Score and Morphology Grading for Embryo Selection During IVF by Ashleigh Storr, Sonya Diakiw, Jonathan Hall, Tuc Nguyen, Jarrod Moreton, Don Perugini, Michelle Perugini

“…Method: 305 de-identified 2D images of day 5 blastocysts (121 fresh/184 frozen) with matched clinical pregnancy outcomes (fetal heartbeat at first scan) from women who underwent IVF treatment from 2020-2023 were retrospectively assessed. …”
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The Significance of Endometrial Scratching for Clinical Pregnancy Rate in Long Agonist and Antagonist Protocols by Rimantas Gricius, Greta Balciuniene, Lina Jakubauskiene, Diana Ramasauskaite

“…In the multivariable logistic regression model, previously failed in vitro fertilization (IVF) (odds ratio (OR) = 0.07, 95% confidence interval (CI) 0.01&#8722;0.47), stimulation with the long agonist protocol (OR = 19.89, 95% CI 3.57&#8722;18.63), antagonist protocol (OR = 0.05, 95% CI 0.01&#8722;0.34), number of embryos (OR = 1.37, 95% CI 1.05&#8722;1.38), and number of blastocysts (OR = 2.96, 95% CI 1.43&#8722;8.36) remained important independent prognostic factors for clinical pregnancy. …”
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Case Report: Successful Pregnancy and Birth of a Healthy Baby with PGT-A for Woman with Advanced Maternal Age by Shaw Ni Amy LEE, Chiou Fen TO, Mei Jing ONG, Rui Shan WONG, Su Ling YU

“…Pre-implantation genetic testing for aneuploidy (PGT-A) can be an option to improve the prognosis of women with advanced maternal age by extracting 3-5 trophectoderm cells from Day 5 and Day 6 blastocysts for genetic testing. Case History: A 37 years old patient tried to conceive for 5 years was recruited into our PGS research study initiated by Ministry of Health in Singapore. …”
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Bovine trophoblastic cell differentiation and binucleation involves enhanced endogenous retrovirus element expression by Koshi Katsuo, Suzuki Yasunori, Nakaya Yuki, Imai Kei, Hosoe Misa, Takahashi Toru, Kizaki Keiichiro, Miyazawa Takayuki, Hashizume Kazuyoshi

“…</p> <p>Methods</p> <p>In this study, blastocysts and elongated embryos were obtained from Japanese Black cows, and endometrial and fetal membrane tissues were collected from day 17 to 37 of gestation. …”
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