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首页> 外文期刊>Journal of Veterinary Diagnostic Investigation >Assessment of platelet biology in equine patients with systemic inflammatory response syndrome
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Assessment of platelet biology in equine patients with systemic inflammatory response syndrome

机译:血小板生物学评价血小型炎症反应综合征的血小板生物学

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摘要

In addition to maintaining hemostasis, platelets have an important role in modulating innate and adaptive immune responses. A low platelet count has been found to be a negative prognostic factor for survival in humans and horses with critical illnesses, such as sepsis or systemic inflammatory response syndrome (SIRS). Decreased platelet aggregation, caused by in vivo activation, has been found in human patients with severe sepsis. In our prospective controlled study, we assessed platelet biology in blood samples from 20 equine SIRS cases and 120 healthy control horses. Platelet variables such as platelet count, large platelet count, clumps, plateletcrit, mean platelet volume, and mean platelet component concentration were analyzed by laser flow cytometry (Advia 2120) from K(3)EDTA blood and from citrate blood. Hirudin blood samples were analyzed by impedance aggregometry (Multiplate analyzer; Roche) for platelet aggregation, including spontaneous aggregation and aggregation by 4 different agonists: adenosine diphosphate (ADPtest), ADP + prostaglandin E1 (ADPtestHS), arachidonic acid (ASPItest), and collagen (COLtest). SIRS cases had significantly lower platelet counts in K(3)EDTA blood (p < 0.0001) compared to control horses. There were no significant differences in aggregation values between SIRS cases and controls. Non-surviving SIRS horses did not have statistically significant lower platelet counts or lower aggregation values for COLtest, ADPtest, or ADPtestHS compared to surviving SIRS horses, although 5 non-survivors were thrombocytopenic.
机译:除了维持止血作用外,血小板在调节先天性和适应性免疫反应中也起着重要作用。在患有严重疾病(如败血症或全身炎症反应综合征(SIRS))的人和马身上,低血小板计数被发现是影响生存的负面预后因素。严重脓毒症患者体内活化导致血小板聚集减少。在我们的前瞻性对照研究中,我们评估了20匹马SIRS病例和120匹健康对照马的血液样本中的血小板生物学特性。通过激光流式细胞术(Advia 2120)从K(3)EDTA血液和柠檬酸盐血液中分析血小板变量,如血小板计数、大血小板计数、聚集、血小板压积、平均血小板体积和平均血小板成分浓度。水蛭素血样通过阻抗聚集仪(Multiplate analyzer;Roche)分析血小板聚集,包括自发聚集和4种不同激动剂的聚集:二磷酸腺苷(ADPtest)、ADP+前列腺素E1(ADPtestHS)、花生四烯酸(ASPItest)和胶原(COLtest)。与对照马相比,SIRS患者K(3)EDTA血液中的血小板计数显著降低(p<0.0001)。SIRS病例和对照组之间的聚集值没有显著差异。与存活的SIRS马相比,未存活的SIRS马的COLtest、ADPtest或ADPTESHs的血小板计数或聚集值在统计学上没有显著降低,尽管有5匹未存活的SIRS马具有血小板减少性。

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