首页> 外文期刊>Journal of immunotoxicology. >A preliminary assessment of relative sensitivities to foreign red blood cell challenges in the northern bobwhite for potential evaluation of immunotoxicity.
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A preliminary assessment of relative sensitivities to foreign red blood cell challenges in the northern bobwhite for potential evaluation of immunotoxicity.

机译:对北博伯怀特州对外来红细胞挑战的相对敏感性的初步评估,可用于评估免疫毒性。

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Many environmental toxins have been shown to suppress the immune system across taxa. The foreign red blood cell (RBC) challenge is an important part of a complement of tests used to assess immunocompetence in the laboratory because it can assess an individual's humoral response without impacting its health. This challenge is used commonly across species and measures antibody titers in response to an intraperitoneal, intravenous, or subcutaneous injection of foreign RBCs. Determination of the best appropriate foreign RBC challenge is therefore important when designing tests for evaluation of humoral responses. The northern bobwhite (Colinus virginianus) is a commonly used species for avian toxicity tests, however little is known about the relative sensitivities of its humoral responses to foreign erythrocytes. In this pilot study, we exposed adult quail to intravenous injections of 5% solutions of sheep, rat, rabbit, bovine, or chicken erythrocytes and performed antibody titers [hemagglutination assay for total immunoglobulin (Ig), IgG, and IgM] for primary and secondary responses. Although the bobwhites appeared to respond strongly to rat RBCs, high variability in responses were observed among individuals. Chicken RBCs elicited the poorest responses for both primary and secondary challenges. Sheep and bovine RBCs were adequate antigens for this test in bobwhites. We found that rabbit erythrocytes elicited the strongest responses with the least amount of variability between individuals. Rabbit RBCs, therefore, appear to be the ideal antigen for this test of the humoral response in this species.
机译:已显示许多环境毒素可抑制整个分类单元的免疫系统。外来红细胞(RBC)挑战是用于评估实验室免疫能力的一系列测试的重要组成部分,因为它可以评估个体的体液反应而不会影响其健康。该挑战通常在物种间使用,并针对腹膜内,静脉内或皮下注射外来RBC来测量抗体滴度。因此,在设计用于评估体液反应的测试时,确定最佳的国外RBC挑战很重要。北方短毛白鼬(Colinus virginianus)是禽毒性试验中常用的物种,但是,其对外来红细胞的体液反应的相对敏感性知之甚少。在这项先导研究中,我们将成年鹌鹑暴露于5%的绵羊,大鼠,兔,牛或鸡红细胞溶液的静脉注射液中,并对原代和初代抗体进行了效价[总凝集性球蛋白(Ig),IgG和IgM的血凝测定]。次要回应。尽管bobwhites对大鼠RBC的反应强烈,但在个体之间观察到反应的高度变异性。鸡的红细胞对主要和次要挑战的反应最差。绵羊和牛的RBC是在bobwhites中进行此测试的足够抗原。我们发现,兔子之间的红血球引起的反应最强,变异性最小。因此,兔红细胞似乎是该物种体液反应测试的理想抗原。

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