ArticleMolecular reproduction and development2025
Uterine Extracellular Vesicles Can Emulate the Long-Term Effects of Post-Partum Negative Energy Balance in Dairy Cows.
Article in Molecular reproduction and development, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed.
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13 authors.
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Abstract
Dairy cows often experience a period of negative energy balance (NEB) during the post-calving period, which can significantly impact economic outcomes due to extended calving-to-conception intervals and overall reduced fertility. This reduction is due, in part, to the impact on uterine biology by high nonesterified fatty acids (NEFA) and beta-hydroxybutyrate concentration. The uterine fluid (UF) contains small extracellular vesicles (UF-EVs) that, through their cargo, including microRNAs (miRNAs), respond to metabolic stress, affecting the uterine environment. This study aimed to assess the long-term impact of NEB intensity on the uterine environment of dairy cows. Post-partum dairy cows were classified based on NEFA concentrations in their blood during the 3 weeks post-calving as having either Low or High NEB. At 30 and 60 DPC, the synchronization protocol was started, and UF samples were collected (corresponding to ~15 days after initiation of the synchronization protocol) to isolate UF-EVs and uterine epithelial cells for miRNA and transcriptome profiling. We also investigated whether UF-EVs could modulate epithelial uterine naïve cells. Our results indicate that the uterine environment of dairy cows experiencing a High NEB post-calving is unfavorable for embryo development at 60-day post-calving. Importantly, we show that UF-EVs can reproduce this phenotype in epithelial uterine naïve cells, suggesting that UF-EVs may act as modulators of the uterine response to metabolic challenges.
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