ArticleFrontiers in veterinary science2025
Europium oxide nanoparticles (EONP) enhance the cryoprotective effects of chilled rabbit semen preservation via antioxidant and mitochondrial enhancement.
Article in Frontiers in veterinary science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: This study investigated the cryoprotective effects of europium oxide nanoparticles [nanozymes; Europium oxide nanoparticles (EONP)] on rabbit sperm quality during 72 h of chilled storage at 4 °C due to its robust antioxidant ability (mimicking enzymes) and mitochondrial enhancer. Methods: In this experiment, diluted semen samples were treated with different concentrations of EONP: 0 (EONP0), 25 (EONP25), 50 (EONP50), or 100 (EONP100) ng/ml. The treated samples were then stored at 4 °C for three days. Sperm quality attributes such as viability, motility, membrane integrity, and morphology were measured at 24, 48, and 72 h of storage. Oxidative/antioxidant activities and mitochondrial enzyme levels were also assessed after 72 h of storage. Results: The results show a quadratic relationship between EONP supplementation (at 25 or 50 ng/ml) and improved sperm motility, viability, and membrane integrity at all time points observed ( Discussion: Nanozyme supplementation of rabbit semen extenders significantly improves sperm quality during 72-h chilled storage by increasing antioxidant competence, reducing oxidative stress (OS), and boosting mitochondrial enzyme activity. Our data suggest that europium oxide nanoparticles are a promising additive for chilled rabbit semen preservation, with implications for artificial insemination (AI) and rabbit breeding.
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