The increasing prevalence of infertility every year is in line with the increasing need for fertilization (IVF) programs. Failure of oocyte maturation is an obstacle that often causes low success in IVF. According to several studies, controlled ovarian stimulation (COS) has been reported to increase the risk of granulosa-cell apoptosis associated with inhibition of oocyte maturation. This study was conducted to determine the effect of electroacupuncture (EA) on oocyte maturation; rate of fertilization; granulosa-cell apoptosis; and levels of growth-differentiation factor 9 (GDF9) and bone-morphogenetic protein 15 (BMP15) an IVF program. A randomized controlled trial was conducted with 24 subjects who were in the IVF program. Subjects were randomly allocated into verum-EA ( = 12) and sham-EA groups ( = 12). Microscopic assessment of oocyte maturation and rate of fertilization was performed by embryologists, and examinations of granulosa-cell apoptosis index (Bax/Bcl-2 ratio), GDF9, and BMP15 were performed, using real-time quantitative polymerase chain reaction and messenger-RNA techniques. There were significant differences in oocyte maturation ( = 0.02) and fertilization rates ( = 0.03) between the verum-EA and sham-EA groups. There were differences in granulosa-cell apoptosis index between the verum-EA and sham-EA groups ( < 0.001). There were significant differences in Bax-protein expression ( = 0.04) and Bcl-2 ( = 0.03) granulosa cells between the verum-EA and sham-EA groups. There was no significant difference in GDF9 levels ( = 0.34) and BMP15 (p = 0.47) between the verum-EA and sham-EA groups. EA can enhance oocyte maturation and fertilization rate, and reduce the granulosa-cell apoptosis index in an IVF program.
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http://dx.doi.org/10.1089/acu.2019.1368 | DOI Listing |
Front Cell Dev Biol
January 2025
Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, South China Institute of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen, China.
Increasing evidence has demonstrated that oxidative stress impairs oocyte maturation and embryonic development. Conventionally, antioxidants have been applied systems to improve oocyte maturation and blastocyst rates. Formononetin (FMN) is a flavonoid that has been shown to have various pharmacological effects, including antioxidants.
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January 2025
School of Biosciences and Technology, Vellore Institute of Technology, Tamil Nadu, Vellore, 632014, India.
Extracellular vesicles, or exosomes, are produced by every type of cell and contain metabolites, proteins, lipids, and nucleic acids. Their role in health and disease is to influence different aspects of cell biology and to act as intermediaries between cells. Follicular fluid exosomes or extracellular vesicles (FF-EVs) secreted by ovarian granulosa cells are critical mediators of ovary growth and maturation.
View Article and Find Full Text PDFEcotoxicol Environ Saf
January 2025
Fisheries College, Huazhong Agricultural University, Wuhan 430070, China; Hubei Engineering Technology Research Center for Aquatic Animal Disease Control and Prevention, Wuhan 430070, China. Electronic address:
The toxicity of tris (2-butoxyethyl) phosphate (TBOEP) has been extensively investigated because of its prevalence in the environment. Nevertheless, the risk factors associated with maternal transmission are poorly understood. In this study, sexually mature female zebrafish were treated with TBOEP (0, 20, 100, and 500 μg/L) for 30 days and were mated with unexposed males.
View Article and Find Full Text PDFEnviron Toxicol Chem
January 2025
Windward Environmental LLC, Seattle, WA, USA.
Monitoring selenium (Se) concentrations in fish ovaries is an important tool for evaluating the ecological risk posed by Se in aquatic systems. Most guidance recommends sampling fish ovaries as closely as possible to when fish spawn on the premise that Se is mobilized from the liver to the ovary during vitellogenesis, and therefore, sampling ovaries during the early phases of oocyte maturation may underestimate egg Se concentrations at the time of spawning. In this study, we evaluated ovary Se data from two species with synchronous oocyte development (Ptychocheilus oregonensis and Prosopium williamsoni), one species with asynchronous oocyte development (Richardsonius balteatus), and one where the mode of development is unclear (Mylocheilus caurinus).
View Article and Find Full Text PDFReproduction
January 2025
Y Yu, Reproductive medical center, Peking University Third Hospital, Beijing, China.
In recent decades, it has become increasingly clear that mammalian gametes and early embryos are highly sensitive to metabolic substrates. With advances in single-cell sequencing, metabolomics, and bioinformatics, we now recognize that metabolic pathways not only meet cellular energy demands but also play a critical role in cell proliferation, differentiation, and fate determination. Investigating metabolic processes during oocyte maturation and early embryonic development is thus essential to advancing reproductive medicine and embryology.
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