Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (48): 7739-7744.doi: 10.3969/j.issn.2095-4344.2014.48.006

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Linoleic acid and acute red blood cells injury: mechanism of hidden blood loss after artificial joint replacement

Yuan Tao1, Cong Yu2, Zhao Jian-ning1, 2, Zhou Li-wu2, Chen Shuang-shuang3, Bao Ni-rong2   

  1. 1Department of Orthopedics, Nanjing School of Clinical Medicine, Southern Medical University, Nanjing General Hospital of Nanjing Military Region of Chinese PLA, Nanjing 210002, Jiangsu Province, China; 2Department of Orthopedics, Nanjing General Hospital of Nanjing Military Region of Chinese PLA, Nanjing 210002, Jiangsu Province, China; 3Department of Ophthalmology, the 455 Hospital of Chinese PLA, Shanghai 200050, China
  • Received:2014-09-19 Online:2014-11-26 Published:2014-11-26
  • About author:Yuan Tao, Studying for master’s degree, Department of Orthopedics, Nanjing School of Clinical Medicine, Southern Medical University, Nanjing General Hospital of Nanjing Military Region of Chinese PLA, Nanjing 210002, Jiangsu Province, China
  • Supported by:

    Clinical Science and Technology Foundation of Jiangsu Province, No. L2012002; Natural Science Foundation of Jiangsu Province, No. BK2012776

Abstract:

BACKGROUND: Hidden blood loss frequently occurs after artificial joint replacement surgery, the resulting anemia may cause serious impact on postoperative rehabilitation. There are many different theories about the hidden blood loss, but the mechanisms are not clear.
OBJECTIVE: To study the effect of linoleic acid on red blood cells of rats and explore the pathogenesis of hidden blood loss after artificial joint replacement surgery.
METHODS: Fifty Spraque-Dawley rats were randomly divided into five groups. Control group (n=10) was injected with alcohol solution via the tail veins. Four test groups (n=10) were injected with 15 mmol/L, 30 mmol/L,       
60 mmol/L, 90 mmol/L linoleic acid via the tail veins, to establish high-level linoleic acid models in vivo. Blood samples collected from the orbital vein were determined before injection and at 24, 48, 72 hours after injection. Changes of hemoglobin, red blood cell count, glutathione peroxidase activity, total superoxide dismutase activity and hydrogen peroxide in the blood samples were observed.
RESULTS AND CONCLUSION: Significant hidden blood loss occurred when the concentration was 60 mmol/L in the experimental group, with the hemoglobin and red blood cell count were sharply reduced in blood samples. The hemoglobin and red blood cell count were reduced in all the experimental groups and control group 24 hours after administration, while the experimental groups changed more obviously (P < 0.05); glutathione peroxidase activity, total superoxide dismutase activity and hydrogen peroxide were also significantly reduced in all groups, and the changes showed significant difference among them (P < 0.05). The hemoglobin and red blood cell count were relatively stable in control group and the experimental groups 48 hours after administration, while glutathione peroxidase activity, total superoxide dismutase activity and hydrogen peroxide were significantly decreased, and changes in the experimental groups were more notable (P < 0.05). Experimental findings show that elevated levels of linoleic acid in the blood cause acute oxidative damage of the red blood cells, which eventually lead to acute anemia and hidden blood loss.


中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程


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Key words: linoleic acid, erythrocyte, blood loss, surgical, arthroplasty, replacement, superoxide dismutase

CLC Number: