ArticleVeterinary world2026
Long-term biochemical stability of fresh-frozen plasma from Asian elephants (
Article in Veterinary world, 2026. 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
Background and Aim: Elephant endotheliotropic herpesvirus hemorrhagic disease (EEHV-HD) is a leading cause of fatal hemorrhagic illness in juvenile Asian elephants ( Materials and Methods: Plasma samples were collected from 20 healthy elephants and processed into fresh and frozen aliquots. Fibrinogen concentrations were quantified using the Clauss assay, factor VIII activity via a one-stage clotting assay, and IgG and albumin concentrations using colorimetric methods. A repeated-measures generalized linear model evaluated the effects of storage duration on protein stability, with post hoc Tukey adjustments. Results: Fibrinogen concentrations remained stable during storage, with no significant differences at 8 or 12 months compared with fresh plasma. Factor VIII activity declined progressively, with a significant 16% reduction after 12 months (p < 0.001), though values remained within clinically acceptable ranges. Conversely, IgG and albumin concentrations increased significantly during frozen storage, with 37% and 21% higher values, respectively, at 12 months, likely reflecting cryoconcentration. Neither sex nor other covariates significantly influenced protein stability. Conclusion: This study provides the first evidence that elephant FFP stored at -20°C retains acceptable biochemical stability for up to 12 months. Although factor VIII activity decreases over time, fibrinogen remains stable, and immunoproteins increase, supporting the clinical utility of stored plasma in EEHV-HD emergencies. These findings provide foundational guidance for establishing elephant plasma banking protocols, improving readiness for rapid intervention, and advancing One Health-aligned conservation strategies for endangered megafauna.
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