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Changes in Plasma Progesterone Levels During Storage of Heparinized Whole Blood from Cow, Horse, Dog and Pig

Förändringar i plasmaprogesteronniuån vid lagring au hepariniserat helblod från ko, häst, hund och gris

Abstract

Progesterone concentrations in heparinized plasma harvested immediately after blood collection were compared with levels obtained after storage of the corresponding whole blood for 2 h, 4 h, 6 h, 1 day, 2 days and 5 days at room temperature and in a refrigerator. The blood was taken during the luteal phase from 4 dogs, 4 horses, 4 pigs and 8 cows. For 4 cows the storage time was extended to 9 and 20 days. No significant effect of whole blood storage time on plasma progesterone concentrations could be shown for dogs or pigs. For the horse a slight but significant decrease was demonstrated when the blood was kept at room temperature. For the cow, however, a dramatic decrease was observed even when the blood was stored in the refrigerator. Following incubation of cow’s blood at room temperature, progesterone levels were close to zero after 1–2 days. By further extending the storage period, a reappearance of assayable progesterone could be elicited. For all species it was found that the storage of plasma at room temperature for 5–9 days did not change the progesterone concentrations.

Sammanfattning

Progesteronkoncentrationen i heparinplasma avskiljd omedelbart efter provtagningen jämfördes med nivåer erhållna efter lagring av motsvarande helblod i 2 h, 4 h, 6 h, 1 dag, 2 dagar och 5 dagar i rumstemperatur och i kylskåp. Blod togs från 4 hundar, 4 hästar, 4 grisar och 8 kor som alla befann sig i luteal fas. För 4 av korna utsträcktes lagringstiden till 9 och 20 dagar. Hos hund och gris påverkades inte plasmaprogesteronkoncentrationen märkbart vid lagring av helblodet. Hos häst påvisades en relativt lindrig men statistiskt signifikant ned-gång efter lagring i rustemperatur. För ko künde däremot konstateras en dramatisk nedgång i plasmaprogesteronkoncentrationen även efter kylskåpslagring av blodet. Vid rumslagring var progesteronnivåerna nära noll efter 1–2 dagar för att därefter åter öka.

För alla undersökta djurslag gällde att lagring av plasma i rumstempertur i 5–9 dagar inte påverkade progesteronkoncentrationen.

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Oltner, R., Edqvist, LE. Changes in Plasma Progesterone Levels During Storage of Heparinized Whole Blood from Cow, Horse, Dog and Pig. Acta Vet Scand 23, 1–8 (1982). https://doi.org/10.1186/BF03546815

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