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一种用于研究半抗原特异性抑制IgE介导的支气管收缩和过敏反应的犬类模型。

A canine model for the study of hapten-specific suppression of IgE-mediated bronchoconstriction and anaphylaxis.

作者信息

Kepron W, Jackson C J, Sehon A H

出版信息

Int Arch Allergy Appl Immunol. 1987;82(3-4):468-70. doi: 10.1159/000234256.

DOI:10.1159/000234256
PMID:3570515
Abstract

Newborn mongrel dogs were sensitized with conjugates of ovalbumin (OA) and 2,4-dinitrophenol (OA-DNP3) in the presence of Al(OH)3 to produce high levels of anti-OA and anti-DNP IgE antibody. At 4-6 months of age, when anti-DNP and anti-OA antibody levels reached titers of 64 by passive cutaneous anaphylaxis, the dogs underwent separate inhalation and intravenous challenges with conjugates of DNP and bovine gamma globulin (DNP15-BGG) and OA. Inhalation challenge with DNP15-BGG and OA resulted in 5- and 10-fold increases in airflow resistance, respectively. Intravenous challenge with either DNP15-BGG or OA produced profound anaphylaxis with 60-80% decreases in blood pressure, cardiac output and regional blood flows in the carotid, superior mesenteric and renal arteries, and the distal aorta. Treatment of sensitized dogs with 5 doses of 20 mg of conjugates of DNP and polyvinyl alcohol (DNP2-PVA) on alternate days resulted in suppression of anti-DNP IgE antibody production; abrogation of established airway and vascular anaphylactic sensitivities; no change in regional blood flows, and no effect on sensitivities to challenge with OA.

摘要

新生杂种犬在氢氧化铝存在的情况下,用卵清蛋白(OA)与2,4 -二硝基苯酚的偶联物(OA - DNP3)进行致敏,以产生高水平的抗OA和抗DNP IgE抗体。在4至6个月龄时,当通过被动皮肤过敏反应抗DNP和抗OA抗体水平达到效价64时,对犬分别进行DNP与牛γ球蛋白的偶联物(DNP15 - BGG)和OA的吸入和静脉激发试验。用DNP15 - BGG和OA进行吸入激发试验分别导致气流阻力增加5倍和10倍。用DNP15 - BGG或OA进行静脉激发试验会引发严重过敏反应,导致颈动脉、肠系膜上动脉、肾动脉和主动脉远端的血压、心输出量和局部血流量降低60% - 80%。对致敏犬隔日给予5剂20 mg的DNP与聚乙烯醇的偶联物(DNP2 - PVA)进行治疗,结果抑制了抗DNP IgE抗体的产生;消除了已建立的气道和血管过敏敏感性;局部血流量无变化,并且对OA激发试验的敏感性没有影响。

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A canine model for the study of hapten-specific suppression of IgE-mediated bronchoconstriction and anaphylaxis.一种用于研究半抗原特异性抑制IgE介导的支气管收缩和过敏反应的犬类模型。
Int Arch Allergy Appl Immunol. 1987;82(3-4):468-70. doi: 10.1159/000234256.
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