ウマ血清アミロイドA蛋白の急性相蛋白としての評価

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書誌事項

タイトル別名
  • Evaluation of Serum Amyloid A Protein as an Acute-Phase Reactive Protein in Horses.
  • ウマ血清アミロイドA蛋白の急性相蛋白としての評価〔英文〕
  • ウマ ケッセイ アミロイド A タンパク ノ キュウセイソウ タンパク トシテ

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説明

Serum amyloid A protein (SAA) was isolated from equine acute-phase serum by repeating Sephadex G-75 gel filtration 3times. Quantitative measurement of equine SAA was performed by the single radial immunodiffusion technique with rabbit anti-equine SAA serum. In clinically normal horses, the SAA concentration remained relatively high from immediately after birth up to 1 week of age. After this the concentration showed periodic fluctiation in the range of approximately 13 to 30 μg/ml. The mean (±SD)concentration of SAA in foals (≤12 months old) and in adult horses (≤18 months old) was 19.37±9.41 and 21.53±9.81μg/ml, respectively. In mares during the perinatal period, the SAA concentration remained stable and within the normal range for 4 months before parturition. After foaling, it increased quickly and reached a peak value of 136.78±56.74μg/ml on day 3 postpartum, and then began to decrease at 2 weeks postpartum returning to within the normal range by 1 month postpartum. In horses with experimentally induced inflammation, the SAA concentration increased quickly, and reached the highest value, approximately 4 to 20 times higher than pre-treatment values, on day 2 after treatment. It then returned to the base line values within 10 days to 4 weeks, concurrent with the disappearance of local inflammatory signs. The SAA concentration was very high in most horses with clinical signs of inflammation. It was concluded from these data that equine SAA was a sensitive acute-phase reactive protein which increased in the early phase of various acute inflammations.

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