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We report on a compact two-electrode voltage clamping system composed of microfabricated electrodes and a fluidic device for oocytes. The device was fabricated by assembling Si-based electrode chips and acrylic frames to form fluidic channels. After the installation of oocytes into the fluidic channels, the device can be separated in order to measure changes in oocyte plasma membrane potential in each channel using an external amplifier. Using fluid simulations and experiments, we investigated the success rates of oocyte arrays and electrode insertion with respect to the flow rate. We successfully located each oocyte in the array and detected oocyte responses to chemical stimuli using our device.
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http://dx.doi.org/10.3390/s23052370 | DOI Listing |
Reprod Domest Anim
September 2025
Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Tartu, Estonia.
Extracellular Vesicles (EVs) are small, membrane-bound particles released by cells into biological fluids, where they function as mediators of intercellular communication. These vesicles transport a diverse array of bioactive molecules, including proteins, lipids, and nucleic acids, and play essential roles in regulating physiological and pathological processes. Recent research has revealed the significance of EVs in reproductive biology, particularly in the areas of spermatozoa maturation, oocyte development, embryo implantation, and maternal-fetal interactions.
View Article and Find Full Text PDFInt J Mol Sci
July 2025
Department of Obstetrics and Gynecology, 'Alexandra' General Hospital, National and Kapodistrian University of Athens, 80 Vasilissis Sofias Avenue, 11528 Athens, Greece.
Per- and polyfluoroalkyl substances (PFASs) comprise a diverse array of synthetic chemicals that resist environmental degradation. They are increasingly recognised as endocrine-disrupting compounds (EDCs). These chemicals, found in non-stick cookware, food packaging, and industrial waste, accumulate in human tissues and fluids, raising substantial concerns regarding their impact on female reproductive health.
View Article and Find Full Text PDFCurr Issues Mol Biol
May 2025
Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
The ovary is the primary reproductive organ in goats, and its development significantly influences the sexual maturity and reproductive capacity of individuals. Long non-coding RNAs (lncRNAs) are integral to a wide array of biological processes. However, the regulatory function of lncRNAs in the development of ovarian tissue during sexual maturity in goats remains largely unexplored.
View Article and Find Full Text PDFHum Reprod
July 2025
Assistance Médicale À La Procréation, CECOS, CHU Estaing, Clermont-Ferrand, France.
Study Question: What is the optimal stage (immature vs mature) and most efficient vitrification technique (semi-automated vs manual) to ensure the safety of the rescue-IVM (r-IVM) procedure for oocyte cryopreservation?
Summary Answer: Human oocytes should be cryopreserved after r-IVM at the mature stage (r-MII oocytes) by semi-automated or manual vitrification.
What Is Known Already: r-IVM of immature oocytes may increase the number of oocytes cryopreserved for fertility preservation. However, the best stage and vitrification system (semi-automated or manual) for cryopreserving oocytes with the least possible impact on nuclear quality is unclear.
J Adv Res
May 2025
Center of Reproductive Medicine, The Affiliated Weihai Second Municipal Hospital of Qingdao University, Weihai, China. Electronic address:
Introduction: Rab32 is a part of the Rab GTPase family, which is known as the regulator of vesicle transport for an array of cellular functions including endosomal transport, autophagy, generation of melanosomes, phagocytosis and inflammatory processes.
Objective: However, the role of Rab32 in oocyte meiosis is still not well-defined.
Methods: We depleted Rab32 expression by knock down approach, and we also disrupted Rab32 function by exogenous Rab32 mRNA injection for mutation.