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Comparison of clinical artificial oocyte activation protocols on mouse egg activation and embryo development.
Reproduction
January 2025
D Cohen, Fundación IBYME. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)., Instituto de Biología y Medicina Experimental, Buenos Aires, Argentina.
Artificial oocyte activation (AOA) with Ca2+ ionophores is an experimental procedure that benefits patients who fail to obtain fertilized eggs. However, the impact of non-physiological Ca2+ increases on cellular events involved in egg-embryo transition and early development remains poorly understood. Using the mouse model, this study compares common Ca2+ ionophore protocols applied in clinical practice - one or two exposures to A23187 or a single exposure to ionomycin - focusing on embryonic development and cellular events associated with egg activation.
View Article and Find Full Text PDFNb-FAR-1: A key developmental protein affects lipid droplet accumulation and cuticle formation in Nippostrongylus brasiliensis.
PLoS Negl Trop Dis
January 2025
State Key Laboratory for Animal Disease Control and Prevention, Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong, China.
Fatty acid and retinol binding proteins (FARs) are lipid-binding protein that may be associated with modulating nematode pathogenicity to their hosts. However, the functional mechanism of FARs remains elusive. We attempt to study the function of a certain FAR that may be important in the development of Nippostrongylus brasiliensis.
View Article and Find Full Text PDFAssociation between dietary intake estimated levels of PCDD/Fs and human sperm quality.
Reprod Toxicol
January 2025
Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain; Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Alimentaciò, Nutrició, Desenvolupament i Salut Mental ANUT-DSM, Reus, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Institute of Health Carlos III, Madrid, Spain.
This study aimed to investigate the association between estimated dietary intake of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) and human sperm quality. This study cross-sectionally assessed the associations between estimated dietary intake of PCDD/Fs and sperm quality parameters in 200 participants aged 18-40 years from the Led-Fertyl study. Linear regression models, accounting for potential confounding variables, were employed to evaluate the relationships.
View Article and Find Full Text PDFThe Influence of Sperm Activation Methods and Oocyte Collection on the Reproductive Effects of Northern Pike ().
Animals (Basel)
December 2024
Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research Polish Academy of Sciences, 10-243 Olsztyn, Poland.
This study compared the quality of northern pike eggs collected using traditional methods (hand stripping) and pneumatic methods (air stripping). The effects of different activation solutions (0.4% NaCl, 0.
View Article and Find Full Text PDFIntraspecific variation and functional study of VERL polymorphism in Pacific abalone (Haliotis discus hannai Ino) and giant abalone (H. gigantea Gmelin).
Int J Biol Macromol
January 2025
State Key Laboratory of Mariculture Breeding, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China. Electronic address:
Article Synopsis
- Sperm and eggs have specific proteins called gamete recognition proteins (GRPs) that influence their compatibility in fertilization, and this study focuses on the VERL receptor in two abalone species.
- The full-length VERL sequences were found to be different in Pacific abalone (11,373 bp) and giant abalone (9,405 bp), with variations in their amino acid compositions and repeats.
- Notably, the study discovered a relationship between VERL genotypes and mating preferences in giant abalone, highlighting amino acid diversity's role in fertilization and providing insights for improving abalone breeding practices.
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