Verónica Pérez, Francisco Crespo, Angela I López, Soledad Cárdenas, María José Bautista, Manuel Hidalgo, Jesus Dorado, Isabel Ortiz
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Effect of silver nanoparticles on donkey sperm parameters and ultrastructure.
The aim of this study was to determine the effect of silver nanoparticles (AgNPs) on donkey sperm parameters and ultrastructure. AgNPs were synthesized, purified and resuspended in the extender. Nine frozen-thawed donkey sperm samples were exposed to different concentrations of AgNPs (0, 1.25, 2.5, 5, 12.5, 25 and 50 μg/mL). Sperm parameters: total (TMOT, %) and progressive (PMOT, %) sperm motility, plasma (LIVE, %) and acrosomal membrane integrity (AIS, %), and sperm morphology (MORF, %) were evaluated immediately after AgNPs exposure (T0) and after 2 h of incubation (T2). The interaction beween AgNPs and spermatozoa was visualized by transmission electron microscopy (TEM). At T0, sperm motility and AIS were reduced (p < .05) when using concentrations ≥50 and ≥25 μg/mL, respectively. At T2, sperm motility and LIVE were significantly decreased (p < .05) in concentrations ≥25 and ≥50 μg/mL, respectively. TEM analysis revealed nanoparticle adhesion to the acrosomal region of the plasma membrane. In conclusion, AgNPs at concentrations ≥25 μg/mL impair motility, acrosome and plasma membrane integrity of donkey sperm, which may be mediated by adhesion to the acrosomal region of the sperm surface membrane.
期刊介绍：
The journal offers comprehensive information concerning physiology, pathology, and biotechnology of reproduction. Topical results are currently published in original papers, reviews, and short communications with particular attention to investigations on practicable techniques.
Carefully selected reports, e. g. on embryo transfer and associated biotechnologies, gene transfer, and spermatology provide a link between basic research and clinical application. The journal applies to breeders, veterinarians, and biologists, and is also of interest in human medicine. Interdisciplinary cooperation is documented in the proceedings of the joint annual meetings.
Fields of interest: Animal reproduction and biotechnology with special regard to investigations on applied and clinical research.
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