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首页> 外文期刊>Journal of biochemical and molecular toxicology >Biochemical and aerosol characterization of ricin for use in non‐clinical efficacy studies
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Biochemical and aerosol characterization of ricin for use in non‐clinical efficacy studies

机译:用于非临床疗效研究的蓖麻素生物化学和气溶胶特征

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摘要

Abstract Ricin toxin may be used as a biological warfare agent and no medical countermeasures are currently available. Here, a well‐characterized lot of ricin was aerosolized to determine the delivered dose for future pre‐clinical efficacy studies.? Mouse intraperitoneal (IP) median lethal dose (LD 50 ) bioassay measured potency at 5.62 and 7.35?μg/kg on Days 0 and 365, respectively. Additional analyses included total protein, sodium dodecyl sulfate polyacrylamide gel electrophoresis, Western blotting, and rabbit reticulocyte lysate activity assay. The nebulizer aerosol produced consistent concentrations (2.5?×?10 3 , 5.0?×?10 3 , 1.0?×?10 4 , and 1.5?×?10 4 ?μg/mL) and spray factor values. The aerosol particle size distribution was of sufficient size to deposit in lung alveoli (1.12–1.43?μm).? Ricinus communi s Agglutinin II (RCA 60), prepared at 19?mg/mL in phosphate‐buffered saline, pH 7.8, and stored at ?70°C, maintained attributes for toxicity following 1‐year storage and aerosolized consistently.
机译:摘要蓖麻毒素可作为生物战争用作生物战争,目前没有医疗对策。在这里,许多蓖麻蓖麻植物被雾化以确定未来临床疗效研究的递送剂量。小鼠腹膜内(IP)中值致命剂量(LD 50)生物测定在第0和365天和365天的5.62和7.35Ωμg/ kg的效力。附加分析包括总蛋白质,十二烷基硫酸钠聚丙烯酰胺凝胶电泳,Western印迹和兔网裂解物活性测定。喷雾器气溶胶产生一致的浓度(2.5?×10 3,5.0?×10 3,1.0××10 4,1.5?×10 4?μg/ ml)和喷雾因子值。气溶胶粒度分布足以沉积在肺肺泡(1.12-1.43Ωμm)中的尺寸。在磷酸盐缓冲盐水,pH7.8的19×mg / ml中制备的Ricinus Communi S AgGlutinin II(RCA 60),并在β0℃下储存,在1年储存后保持毒性的属性,始终如一地雾化。

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