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The effect of storage on ammonia, cytokine, and chemokine concentrations in feline whole blood
Author(s) -
Cummings Katherine A.,
Abelson Amanda L.,
Rozanski Elizabeth A.,
Sharp Claire R.
Publication year - 2016
Publication title -
journal of veterinary emergency and critical care
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.886
H-Index - 47
eISSN - 1476-4431
pISSN - 1479-3261
DOI - 10.1111/vec.12510
Subject(s) - medicine , cats , chemokine , proinflammatory cytokine , whole blood , cytokine , immunology , gastroenterology , inflammation
Objective To determine if the concentrations of ammonia and inflammatory mediators in feline stored whole blood (SWB) increase with duration of storage. Design Prospective ex vivo study. Setting University Teaching Hospital. Animals Thirteen cats, recruited from the hospital feline donor pool, deemed healthy based on the predonation donor screening process. Interventions One unit (30 mL) of whole blood was collected from 13 unique blood donor cats, anticoagulated with citrate‐phosphate‐dextrose, and stored at 4°C. Concentrations of ammonia, interleukin (IL) 6, and IL‐10 were measured in 5 units weekly for 4 weeks. Presence of chemokine ligand (CXCL) 8 was measured weekly in 8 other units in the same manner. Measurements and Main Results The ammonia concentration increased nonlinearly with duration of storage, from a median of 48 μmol/L (range 25–74 μmol/L) on day 0 and 417 μmol/L (324–457 μmol/L) on day 28. IL‐6 and IL‐10 concentrations were below the lower limits of detection of the assay used (IL‐6 < 31.2 pg/mL and IL‐10 < 125 pg/mL). CXCL‐8 was detected in 4 of 8 SWB units at all time points. Conclusions and Clinical Importance Ammonia concentration increases with storage time in feline SWB. The clinical significance of this finding is yet to be determined. The presence of the proinflammatory chemokine CXCL‐8 in feline SWB warrants further research to determine whether it can incite an inflammatory response in the recipient. Further research evaluating the epidemiology of transfusion reactions in cats should evaluate the effect of unit age, and should include the possible impact of the presence of CXCL‐8.